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EP0723108A1 - Vehicle headlamp - Google Patents

Vehicle headlamp Download PDF

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Publication number
EP0723108A1
EP0723108A1 EP95118342A EP95118342A EP0723108A1 EP 0723108 A1 EP0723108 A1 EP 0723108A1 EP 95118342 A EP95118342 A EP 95118342A EP 95118342 A EP95118342 A EP 95118342A EP 0723108 A1 EP0723108 A1 EP 0723108A1
Authority
EP
European Patent Office
Prior art keywords
edge
light
diaphragm part
reflector
low beam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95118342A
Other languages
German (de)
French (fr)
Other versions
EP0723108B1 (en
Inventor
Rainer Dr. Dipl.-Phys. Neumann
Heike Dipl.-Ing. Eichler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0723108A1 publication Critical patent/EP0723108A1/en
Application granted granted Critical
Publication of EP0723108B1 publication Critical patent/EP0723108B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/686—Blades, i.e. screens moving in a vertical plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/17—Discharge light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/335—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with continuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/62—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution for adaptation between right-hand and left-hand traffic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources

Definitions

  • the invention relates to a headlamp for vehicles according to the preamble of claim 1.
  • Such a headlight is known from DE 40 02 576 A1.
  • This headlight has a gas discharge lamp as the light source and a reflector, with an upper reflector area and a lower reflector area. Light is reflected from the upper reflector area as a convergent light beam, which forms a low beam. Light reflected from the upper and lower reflector areas together forms a high beam.
  • a lens is arranged behind the reflector, through which the light reflected from the upper reflector area passes.
  • a diaphragm arrangement Arranged between the reflector and the lens is a diaphragm arrangement which consists of a single diaphragm and which has an upper edge, through which a light-dark boundary of the low beam is generated.
  • the diaphragm also forms a shielding device assigned to the lower reflector region, which is between a position for Low beam and a position for high beam is switchable. In the position for low beam, light reflected from the lower reflector area is shielded by the cover and in the position for high beam light reflected from the lower reflector area can pass the cover and exit the headlight.
  • This known headlamp can thus be used for low beam and high beam, but different versions are required for right-hand and left-hand traffic, which increases the manufacturing effort of the headlamp.
  • the headlamp according to the invention with the features according to claim 1 has the advantage that it can be used for right-hand and left-hand traffic, so that only one headlamp version is required for both types of traffic.
  • FIG. 1 shows a headlamp for vehicles in a vertical longitudinal section
  • FIG. 2 shows the headlamp in a cross section along line II-II in FIG. 1 with a diaphragm arrangement according to a first exemplary embodiment in a position for low beam and right-hand traffic
  • FIG. 3 shows the diaphragm arrangement in one position for high beam
  • FIG. 4 shows the panel arrangement in the position for low beam and left-hand traffic
  • FIG. 5 shows the panel arrangement according to a second exemplary embodiment in for right-hand traffic optimized design in a position for low beam
  • FIG. 6 shows the diaphragm arrangement according to the second exemplary embodiment in a design optimized for left-hand traffic
  • FIG. 1 shows a headlamp for vehicles in a vertical longitudinal section
  • FIG. 2 shows the headlamp in a cross section along line II-II in FIG. 1 with a diaphragm arrangement according to a first exemplary embodiment in a position for low beam and right-hand traffic
  • FIG. 3 shows the diaphragm arrangement
  • FIG. 7 shows the diaphragm arrangement according to a third exemplary embodiment in a position for low beam
  • FIG. 8 shows the diaphragm arrangement according to a fourth exemplary embodiment in a position for low beam
  • 9 shows a measuring screen with the high beam illuminated in the operating position by the light emitted by the headlight
  • FIG. 10 shows the measuring screen with the low beam illuminated in the operating position and the diaphragm arrangement according to the first exemplary embodiment
  • FIG. 11 shows the measuring screen with this on the low beam operating position with the diaphragm arrangement according to the third exemplary embodiment illuminated area.
  • a headlight for vehicles, in particular motor vehicles, shown in FIG. 1 serves for the optional generation of a low beam and a high beam.
  • the headlight has a reflector 10, in which a gas discharge lamp 12 is inserted as a light source. During operation, an arc 13 is formed in the gas discharge lamp 12, which extends axially along the optical axis 14.
  • the reflector 10 has an upper reflector region 16 and a lower reflector region 18, it being possible for the transition between the two reflector regions 16, 18 to take place in the horizontal central plane 20 of the reflector 10 or offset upwards or downwards with respect thereto.
  • the transition between the two reflector regions 16, 18 can take place in the form of a step or a kink or also continuously, that is to say without a step or kink.
  • the upper reflector region 16 is designed so that the gas discharge lamp passes through it 12 emitted light is reflected as a convergent light beam.
  • a lens 24 is arranged after the reflector 10, through which the light reflected by the upper reflector region 16 passes.
  • the lens 24 is designed as a converging lens and has a flat surface 25 facing the reflector 10 and a convex curved surface 26 facing away from the reflector 10.
  • the curved surface 26 of the lens 24 is preferably aspherical. Reflected light is deflected by the lens 24 from the upper reflector region 16, preferably in such a way that after passing through the lens 24 it runs approximately parallel to the optical axis 14 in vertical longitudinal planes or downward in the light exit direction 22 and in horizontal longitudinal planes is scattered.
  • a translucent cover plate can also be arranged, which can be designed as a smooth plate or can be provided with optically active elements through which the light passing through is deflected.
  • a diaphragm arrangement 30 Arranged between the lens 24 and the reflector 10 is a diaphragm arrangement 30, which consists of a fixedly arranged diaphragm part 32 and a movable diaphragm part 34.
  • the fixed diaphragm part 32 can be fastened, for example, to the front edge of the reflector 10 pointing in the light exit direction 22.
  • the diaphragm arrangement 30 is arranged essentially below the optical axis 14, viewed in the light exit direction 22, after the lower reflector region 18.
  • the movable diaphragm part 34 has an upper edge 36, by means of which in a first position of the diaphragm part 34, in which it protrudes vertically beyond the fixed diaphragm part 32 as shown in FIG emerging light beam is generated.
  • the movable diaphragm part 34 In this first position, the movable diaphragm part 34 is in the operating position of the dipped-beam headlamp. In this first position, the light reflected by the lower reflector region 18 is shielded by the movable diaphragm part 34, so that it cannot emerge from the headlight.
  • the movable screen part 34 can be moved into a second position, in which it is arranged below the fixed screen part 32, as shown in FIG. In this second position, the movable diaphragm part 34 is in the operating position of the headlight for high beam.
  • the light reflected by the lower reflector region 18 can pass this and the fixed diaphragm part 32 in the second position of the movable diaphragm part 34 and emerge from the headlight and illuminates a measuring screen 60 shown in FIG. 9 and arranged in front of the headlight in an area designated by 62.
  • the high beam emerging from the headlight in the high beam operating position is thus formed by the light reflected by the upper reflector region 16 and by the lower reflector region 18, while the low beam emerging from the headlight in the low beam operating position is formed only by the light reflected by the upper reflector region 16 .
  • the light reflected by the lower reflector region 18 can pass through the lens 24 and be deflected thereby, or it can also be provided that the light reflected by the lower reflector region 18 passes the lens 24 and is therefore not deflected by the latter.
  • optically effective elements can be provided on the cover plate, by means of which the light reflected by the lower reflector region 18 is deflected.
  • the upper reflector region 16 is optimized in such a way that the light reflected by it in cooperation with the lens 24 forms an effective low beam, while the lower reflector region 18 is optimized in such a way that the light reflected by it together with the light reflected by the upper reflector region 16 forms an effective high beam.
  • the transition between the two reflector regions 16, 18 can be continuous, that is to say stepless, or also with one step.
  • the upper reflector region 16 can be designed such that it contains ellipses or elliptical-like curves in axial longitudinal sections, that is to say the optical axis 14.
  • the upper reflector region 16 is not rotationally symmetrical, so it contains different curves in different axial longitudinal sections.
  • the lower reflector region 18 can also be designed such that it contains different ellipses or ellipse-like curves in different axial longitudinal sections and reflects light emitted by the gas discharge lamp 12 as a convergent light bundle.
  • the lower reflector region 18 can, as shown in FIG. 1, be pivoted upward from a position shown in broken lines with respect to the upper reflector region 18 with its front edge pointing in the direction of light exit 22 about an axis 35 running perpendicular to the optical axis 14 and horizontally.
  • the pivot axis 35 can be arranged in the apex region 38 of the reflector 10.
  • the gas discharge lamp 12 can also move in the direction the optical axis 14 and / or in the vertical direction with respect to the optical axis 14.
  • the gas discharge lamp 12 is preferably in the operating position for high beam in a first position in which its arc 13 is arranged approximately on the optical axis 14, as shown in solid lines in FIG. 1, and is arranged at a certain distance from the apex 38 of the reflector 10 is.
  • the gas discharge lamp 12 In the operating position of the headlamp for low beam, the gas discharge lamp 12 is in a second position, in which its arc 13, as shown in FIG.
  • the fixed diaphragm part 32 can also have an upper edge 40 which is effective when the movable diaphragm part 34 is in its second position according to FIG. 3 in the operating position of the headlight for high beam.
  • the upper edge 40 of the fixed diaphragm part 32 is preferably arranged horizontally and by this only a small part of the light reflected from the lower reflector region 18 is shielded, which would make little contribution to the high beam anyway.
  • the movable diaphragm part 34 can be moved in a straight line with respect to the fixed diaphragm part 32 in the vertical direction or it can alternatively be provided that the movable diaphragm part 34 can be pivoted about an axis 42 which is approximately horizontal to the optical axis 14 and approximately horizontal.
  • the movable screen part 34 can be guided on the fixed screen part 32 or be mounted on the fixed screen part 32 via the axis 42.
  • an adjusting element 44 is provided, which can be electromotive, hydraulic or pneumatic and which is actuated by a control device 46.
  • the control device 46 is connected to the light switch 47 of the vehicle, with which the vehicle driver switches between low beam and high beam, and actuates the actuating element 44 accordingly.
  • FIGS. 2 to 4 show the diaphragm arrangement 30 according to a first exemplary embodiment, in which the upper edge 36 of the movable diaphragm part 34 has two edge sections 36a and 36b arranged next to one another.
  • the two edge sections 36a and 36b are arranged inclined relative to one another and form an angle ⁇ of approximately 165 ° on the diaphragm part 34.
  • the two edge sections 36a, 36b abut one another approximately in the region of the optical axis 14.
  • the movable screen part 34 is arranged in such a way that the right edge section 36b, viewed in the direction of light exit 22, is arranged approximately horizontally and the left edge section 36a slopes downward toward the outer edge of the screen part 34.
  • FIG. 10 shows a measuring screen 60 arranged in front of the headlight, which is illuminated by the low beam emitted by the headlight in an area designated by 64.
  • the right edge portion 36b of the panel part 34 creates a horizontal one in front of the vehicle on the left traffic side
  • the light-dark boundary 66 and the left edge section 36a produce a light-dark boundary 68 rising to the right on the right-hand side of the traffic.
  • the light beam emerging from the headlight thus fulfills legal requirements in Europe, so-called ECE regulations, for asymmetrical low beam. In this position according to FIG.
  • the movable cover part 34 is located when the vehicle is operated in a country with right-hand traffic.
  • the movable diaphragm part 34 can now also be pivoted about an axis 48 running approximately parallel to the optical axis 14 into a second position according to FIG. 4.
  • the axis 48 preferably coincides at least approximately with the optical axis 14.
  • the left edge section 36a is now arranged approximately horizontally and the right edge section 36b is inclined downward toward the right edge.
  • a horizontal light-dark boundary 66 ' shown in dashed lines in FIG.
  • the movable panel part 34 is located when the vehicle is operated in a country with left-hand traffic. In both positions of the movable screen part 34, the latter has the edge sections 36a, 36b which are arranged next to one another and which are offset relative to one another in the vertical direction.
  • the pivoting of the movable diaphragm part 34 about the axis 48 is effected by a further actuating element 50 which acts on the diaphragm part 34 eccentrically to the axis 48.
  • the actuating element 50 like the actuating element 44, can move of the aperture part 34 between its low beam and high beam positions can be electromotive, hydraulic or pneumatic and can be actuated by the vehicle driver via a switching element 52.
  • FIGS. 5 and 6 show the diaphragm arrangement 130 in accordance with a second exemplary embodiment, the fixed diaphragm part 132 not being changed compared to the first exemplary embodiment and the movable diaphragm part 134 being movable, as in the first exemplary embodiment, for switching between low beam and high beam.
  • the movable screen part 134 has the upper edge 136, with the two edge sections 136a and 136b arranged next to one another.
  • the edge sections 136a and 136b form an angle ⁇ of approximately 165 ° on the diaphragm part 134, but do not abut one another in the region of the optical axis 14, but offset in the horizontal direction.
  • the inclined left edge section 136a extends to the right to over the optical axis 14 and the right, horizontally arranged edge section 136b is formed only to the right of the optical axis 14.
  • the light reflected by the upper reflector region 16 is better used compared to the symmetrical design of the diaphragm part 34 according to the first exemplary embodiment, and the low beam emitted by the headlight has a long range on its own side, that is to say on the right-hand side of the traffic.
  • the left edge section 136a is arranged horizontally and extends to the right beyond the optical axis 14 and the right edge section 136b is arranged inclined, but this does not correspondingly extend as far as the optical axis 14.
  • the panel arrangement 130 according to FIG. 6 is provided for a vehicle which is predominantly used in countries with left-hand traffic.
  • the movable diaphragm part 134 is designed such that, in the position of the diaphragm part 134 for left-hand traffic, its right edge section 136b, as shown in solid lines in FIG. 6, is inclined and extends to the left beyond the optical axis 14 and only to the left of the optical axis Axis 14 arranged edge portion 136a is arranged horizontally.
  • This design of the aperture part 134 in turn ensures good use of the light reflected by the upper reflector region 16 and a large range of the low beam emerging from the headlight on the driver's own, that is to say the left, traffic side.
  • the right edge section 136b is accordingly arranged horizontally and extends to the left beyond the optical axis 14 and the left edge section 136a is arranged inclined.
  • the movable diaphragm part 134 of the embodiment of FIG. 5 can be used by arranging it in reverse, that is to say that its side facing the reflector 10 in FIG. 5 faces away from the reflector 10 in FIG.
  • FIG. 7 shows the diaphragm arrangement 230 according to a third exemplary embodiment.
  • the movable diaphragm part 234 has the upper edge 236 which projects beyond the fixed diaphragm part 232 and which has the two edge sections 236a and 236b arranged next to one another, both of which extend approximately horizontally and which are offset from one another in the vertical direction.
  • the cover part 234 also has an edge 237 on its lower edge, which has two edge sections 237a and 237b arranged next to one another, which are offset in the vertical direction in the same way as the edge sections 236a and 236b of the upper edge 236.
  • the cover part 234 shown with solid lines in its position for right-hand traffic, in which the left edge section 236a is arranged lower than the right edge section 236b. Accordingly, the left edge section 237a of the lower edge 237 is arranged lower than its right edge section 237b.
  • the measuring screen 60 is shown when illuminated by the low beam emitted by the headlight.
  • the measuring screen 60 is illuminated in an area designated by 70, which has the horizontal light-dark boundary 72 generated by the right edge section 236b on the oncoming traffic side, that is to say the left traffic side, and one generated by the left edge section 236a on its own, that is to say the right traffic side , also has a horizontal light-dark boundary 74, but which is arranged higher than the light-dark boundary 72 on the oncoming traffic side.
  • the low beam bundle emerging from the headlight with the aperture arrangement 230 according to the third exemplary embodiment thus meets legal requirements in the USA and Japan.
  • the diaphragm part 234 can be pivoted about an axis 254 which is approximately perpendicular to the optical axis 14 and approximately horizontally.
  • the axis 254 viewed in the vertical direction, runs through the center of the panel part 234.
  • the panel part 234 is shown in its position pivoted about the axis 254 for left-hand traffic with dashed lines, in which the edge 237 now extends beyond the fixed aperture part 232 and generates the light-dark boundary of the low beam.
  • the left edge section 237a is arranged higher in the vertical direction than the right edge section 237b.
  • the measuring screen 60 is illuminated by the dipped beam emerging from the headlight in the area 70 which, on the oncoming traffic side, that is to say the right traffic side, a horizontal light-dark boundary 72 ′ generated by the left edge section 237a and shown in dashed lines on and on its own traffic side, that is to say On the left-hand side of the traffic, a light-dark boundary 74 ′, which is also horizontal but is arranged higher, is generated by the right edge section 237b.
  • the movable diaphragm part 234 according to the third exemplary embodiment is also movable, as in the first exemplary embodiment, for switching between low beam and high beam.
  • FIG. 8 shows the panel arrangement 330 according to a fourth exemplary embodiment and has the fixed panel part 332 and the movable panel part 334.
  • the upper edge 336 of the diaphragm part 334 is of the same design as in the third exemplary embodiment, that is to say it has the two horizontally running and vertically offset edge sections 336a and 336b.
  • the panel part 334 likewise has an edge 337, with two edge sections 337a and 337b which are arranged next to one another and each run horizontally.
  • the edge sections 337a, 337b of the lower edge 337 are arranged in mirror image to the edge sections 326a, 336b of the upper edge 336, the left edge section 337a is arranged higher than the right edge section 337b.
  • the diaphragm part 334 is arranged with solid lines in its position for right-hand traffic, in which the upper edge 336 generates the light-dark boundary.
  • the aperture part 334 is pivoted about an axis 354 extending approximately parallel to the optical axis 14 and horizontally. In this position, the light-dark boundary is generated by the edge 337, which now protrudes beyond the fixed diaphragm part 332.
  • the higher edge section 337b is arranged on the left and the lower edge section 337a is arranged on the right.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The other edge section of the two edge sections (36a,36b) produces the light/dark border on the counter traffic side. The two edge sections are arranged mutually displaced to each other. The shutter part (34) is adjustable between a setting for travelling on the right and a setting for travelling on the left. So that respectively in both settings, the shutter edge section which produces the light/dark border on the own traffic side, is arranged vertically lower than the other edge section, which produces the light/dark border on the counter traffic side.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Scheinwerfer für Fahrzeuge nach der Gattung des Anspruchs 1.The invention relates to a headlamp for vehicles according to the preamble of claim 1.

Ein solcher Scheinwerfer ist durch die DE 40 02 576 A1 bekannt. Dieser Scheinwerfer weist eine Gasentladungslampe als Lichtquelle auf und einen Reflektor, mit einem oberen Reflektorbereich und einem unteren Reflektorbereich. Vom oberen Reflektorbereich wird Licht als konvergentes Lichtbündel reflektiert, das ein Abblendlichtbündel bildet. Vom oberen und unteren Reflektorbereich reflektiertes Licht bildet zusammen ein Fernlichtbündel. In Lichtaustrittsrichtung gesehen nach dem Reflektor ist eine Linse angeordnet, durch die das vom oberen Reflektorbereich reflektierte Licht hindurchtritt. Zwischen dem Reflektor und der Linse ist eine Blendenanordnung angeordnet, die aus einer einzigen Blende besteht und die eine Oberkante aufweist, durch die eine Helldunkelgrenze des Abblendlichtbündels erzeugt wird. Die Blende bildet außerdem eine dem unteren Reflektorbereich zugeordnete Abschirmvorrichtung, die zwischen einer Stellung für Abblendlicht und einer Stellung für Fernlicht umschaltbar ist. In der Stellung für Abblendlicht wird durch die Blende vom unteren Reflektorbereich reflektiertes Licht abgeschirmt und in der Stellung für Fernlicht kann vom unteren Reflektorbereich reflektiertes Licht an der Blende vorbeigelangen und aus dem Scheinwerfer austreten. Dieser bekannte Scheinwerfer kann somit für Abblendlicht und für Fernlicht verwendet werden, jedoch sind für Rechtsverkehr und Linksverkehr verschiedene Ausführungen erforderlich, was den Fertigungsaufwand des Scheinwerfers erhöht.Such a headlight is known from DE 40 02 576 A1. This headlight has a gas discharge lamp as the light source and a reflector, with an upper reflector area and a lower reflector area. Light is reflected from the upper reflector area as a convergent light beam, which forms a low beam. Light reflected from the upper and lower reflector areas together forms a high beam. When viewed in the light exit direction, a lens is arranged behind the reflector, through which the light reflected from the upper reflector area passes. Arranged between the reflector and the lens is a diaphragm arrangement which consists of a single diaphragm and which has an upper edge, through which a light-dark boundary of the low beam is generated. The diaphragm also forms a shielding device assigned to the lower reflector region, which is between a position for Low beam and a position for high beam is switchable. In the position for low beam, light reflected from the lower reflector area is shielded by the cover and in the position for high beam light reflected from the lower reflector area can pass the cover and exit the headlight. This known headlamp can thus be used for low beam and high beam, but different versions are required for right-hand and left-hand traffic, which increases the manufacturing effort of the headlamp.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Scheinwerfer mit den Merkmalen gemäß dem Anspruch 1 hat demgegenüber den Vorteil, daß dieser für Rechtsverkehr und Linksverkehr verwendet werden kann, so daß nur eine Scheinwerferausführung für beide Verkehrsarten erforderlich ist.The headlamp according to the invention with the features according to claim 1 has the advantage that it can be used for right-hand and left-hand traffic, so that only one headlamp version is required for both types of traffic.

In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen des Scheinwerfers angegeben.Advantageous refinements and developments of the headlight are specified in the dependent claims.

Zeichnungdrawing

Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 einen Scheinwerfer für Fahrzeuge in einem vertikalen Längsschnitt, Figur 2 den Scheinwerfer in einem Querschnitt entlang Linie II-II in Figur 1 mit einer Blendenanordnung gemäß einem ersten Ausführungsbeispiel in einer Stellung für Abblendlicht und Rechtsverkehr, Figur 3 die Blendenanordnung in einer Stellung für Fernlicht, Figur 4 die Blendenanordnung in der Stellung für Abblendlicht und Linksverkehr, Figur 5 die Blendenanordnung gemäß einem zweiten Ausführungsbeispiel in für Rechtsverkehr optimierter Ausführung in einer Stellung für Abblendlicht, Figur 6 die Blendenanordnung gemäß dem zweiten Ausführungsbeispiel in einer für Linksverkehr optimierten Ausführung, Figur 7 die Blendenanordnung gemäß einem dritten Ausführungsbeispiel in einer Stellung für Abblendlicht, Figur 8 die Blendenanordnung gemäß einem vierten Ausführungsbeispiel in einer Stellung für Abblendlicht, Figur 9 einen Meßschirm mit auf diesem in der Betriebsstellung Fernlicht durch das vom Scheinwerfer ausgesandte Licht beleuchtetem Bereich, Figur 10 den Meßschirm mit auf diesem in der Betriebsstellung Abblendlicht mit der Blendenanordnung gemäß dem ersten Ausführungbeispiel beleuchtetem Bereich und Figur 11 den Meßschirm mit auf diesem in der Betriebsstellung Abblendlicht mit der Blendenanordnung gemäß dem dritten Ausführungsbeispiel beleuchtetem Bereich.Several embodiments of the invention are shown in the drawing and explained in more detail in the following description. 1 shows a headlamp for vehicles in a vertical longitudinal section, FIG. 2 shows the headlamp in a cross section along line II-II in FIG. 1 with a diaphragm arrangement according to a first exemplary embodiment in a position for low beam and right-hand traffic, and FIG. 3 shows the diaphragm arrangement in one position for high beam, FIG. 4 shows the panel arrangement in the position for low beam and left-hand traffic, FIG. 5 shows the panel arrangement according to a second exemplary embodiment in for right-hand traffic optimized design in a position for low beam, FIG. 6 shows the diaphragm arrangement according to the second exemplary embodiment in a design optimized for left-hand traffic, FIG. 7 shows the diaphragm arrangement according to a third exemplary embodiment in a position for low beam, FIG. 8 shows the diaphragm arrangement according to a fourth exemplary embodiment in a position for low beam 9 shows a measuring screen with the high beam illuminated in the operating position by the light emitted by the headlight, FIG. 10 shows the measuring screen with the low beam illuminated in the operating position and the diaphragm arrangement according to the first exemplary embodiment, and FIG. 11 shows the measuring screen with this on the low beam operating position with the diaphragm arrangement according to the third exemplary embodiment illuminated area.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Ein in Figur 1 dargestellter Scheinwerfer für Fahrzeuge, insbesondere Kraftfahrzeuge, dient zur wahlweisen Erzeugung eines Abblendlichts und eines Fernlichts. Der Scheinwerfer weist einen Reflektor 10 auf, in den eine Gasentladungslampe 12 als Lichtquelle eingesetzt ist. In der Gasentladungslampe 12 ist bei deren Betrieb ein Lichtbogen 13 gebildet, der sich axial entlang der optischen Achse 14 erstreckt. Der Reflektor 10 weist einen oberen Reflektorbereich 16 und einen unteren Reflektorbereich 18 auf, wobei der Übergang zwischen den beiden Reflektorbereichen 16,18 in der horizontalen Mittelebene 20 des Reflektors 10 oder bezüglich dieser nach oben oder nach unten versetzt erfolgen kann. Der Übergang zwischen den beiden Reflektorbereichen 16,18 kann in Form einer Stufe oder eines Knicks oder auch kontinuierlich, das heißt ohne Stufe oder Knick, erfolgen. Der obere Reflektorbereich 16 ist so ausgebildet, daß durch diesen von der Gasentladungslampe 12 ausgesandtes Licht als ein konvergentes Lichtbündel reflektiert wird.A headlight for vehicles, in particular motor vehicles, shown in FIG. 1 serves for the optional generation of a low beam and a high beam. The headlight has a reflector 10, in which a gas discharge lamp 12 is inserted as a light source. During operation, an arc 13 is formed in the gas discharge lamp 12, which extends axially along the optical axis 14. The reflector 10 has an upper reflector region 16 and a lower reflector region 18, it being possible for the transition between the two reflector regions 16, 18 to take place in the horizontal central plane 20 of the reflector 10 or offset upwards or downwards with respect thereto. The transition between the two reflector regions 16, 18 can take place in the form of a step or a kink or also continuously, that is to say without a step or kink. The upper reflector region 16 is designed so that the gas discharge lamp passes through it 12 emitted light is reflected as a convergent light beam.

In Lichtaustrittsrichtung 22 gesehen ist nach dem Reflektor 10 eine Linse 24 angeordnet, durch die das vom oberen Reflektorbereich 16 reflektierte Licht hindurchtritt. Die Linse 24 ist als Sammellinse ausgebildet und weist eine dem Reflektor 10 zugewandte Planfläche 25 und eine dem Reflektor 10 abgewandte konvex gekrümmte Fläche 26 auf. Die gekrümmte Fläche 26 der Linse 24 ist vorzugsweise asphärisch ausgebildet. Durch die Linse 24 wird vom oberen Reflektorbereich 16 reflektiertes Licht abgelenkt, vorzugsweise in der Weise, daß es nach dem Durchtritt durch die Linse 24 in vertikalen Längsebenen etwa parallel zur optischen Achse 14 oder in Lichtaustrittsrichtung 22 zu dieser nach unten geneigt verläuft und in horizontalen Längsebenen gestreut ist. In Lichtaustrittsrichtung 22 gesehen nach der Linse 24 kann außerdem noch eine lichtdurchlässige Abdeckscheibe angeordnet sein, die als glatte Scheibe ausgebildet sein kann oder mit optisch wirksamen Elementen versehen sein kann, durch die das hindurchtretende Licht abgelenkt wird.Seen in the light exit direction 22, a lens 24 is arranged after the reflector 10, through which the light reflected by the upper reflector region 16 passes. The lens 24 is designed as a converging lens and has a flat surface 25 facing the reflector 10 and a convex curved surface 26 facing away from the reflector 10. The curved surface 26 of the lens 24 is preferably aspherical. Reflected light is deflected by the lens 24 from the upper reflector region 16, preferably in such a way that after passing through the lens 24 it runs approximately parallel to the optical axis 14 in vertical longitudinal planes or downward in the light exit direction 22 and in horizontal longitudinal planes is scattered. Viewed in the light exit direction 22 after the lens 24, a translucent cover plate can also be arranged, which can be designed as a smooth plate or can be provided with optically active elements through which the light passing through is deflected.

Zwischen der Linse 24 und dem Reflektor 10 ist eine Blendenanordnung 30 angeordnet, die aus einem feststehend angeordneten Blendenteil 32 und einem beweglichen Blendenteil 34 besteht. Das feststehende Blendenteil 32 kann beispielsweise am in Lichtaustrittsrichtung 22 weisenden Vorderrand des Reflektors 10 befestigt sein. Die Blendenanordnung 30 ist im wesentlichen unterhalb der optischen Achse 14 in Lichtaustrittsrichtung 22 gesehen nach dem unteren Reflektorbereich 18 angeordnet. Das bewegliche Blendenteil 34 weist eine Oberkante 36 auf, durch die in einer ersten Stellung des Blendenteils 34, in der dieses wie in Figur 2 dargestellt in vertikaler Richtung über das feststehende Blendenteil 32 hinausragt, eine Helldunkelgrenze des aus dem Scheinwerfer austretenden Lichtbündels erzeugt wird. In dieser ersten Stellung befindet sich das bewegliche Blendenteil 34 in der Betriebsstellung des Scheinwerfers für Abblendlicht. Das vom unteren Reflektorbereich 18 reflektierte Licht wird in dieser ersten Stellung durch das bewegliche Blendenteil 34 abgeschirmt, so daß es nicht aus dem Scheinwerfer austreten kann. Das bewegliche Blendenteil 34 ist in eine zweite Stellung bewegbar, in der es wie in Figur 3 dargestellt unterhalb des feststehenden Blendenteils 32 angeordnet ist. In dieser zweiten Stellung befindet sich das bewegliche Blendenteil 34 in der Betriebsstellung des Scheinwerfers für Fernlicht. Das vom unteren Reflektorbereich 18 reflektierte Licht kann in der zweiten Stellung des beweglichen Blendenteils 34 an diesem und dem feststehenden Blendenteil 32 vorbeigelangen und aus dem Scheinwerfer austreten und beleuchtet einen in Figur 9 dargestellten, vor dem Scheinwerfer angeordneten Meßschirm 60 in einem mit 62 bezeichneten Bereich.Arranged between the lens 24 and the reflector 10 is a diaphragm arrangement 30, which consists of a fixedly arranged diaphragm part 32 and a movable diaphragm part 34. The fixed diaphragm part 32 can be fastened, for example, to the front edge of the reflector 10 pointing in the light exit direction 22. The diaphragm arrangement 30 is arranged essentially below the optical axis 14, viewed in the light exit direction 22, after the lower reflector region 18. The movable diaphragm part 34 has an upper edge 36, by means of which in a first position of the diaphragm part 34, in which it protrudes vertically beyond the fixed diaphragm part 32 as shown in FIG emerging light beam is generated. In this first position, the movable diaphragm part 34 is in the operating position of the dipped-beam headlamp. In this first position, the light reflected by the lower reflector region 18 is shielded by the movable diaphragm part 34, so that it cannot emerge from the headlight. The movable screen part 34 can be moved into a second position, in which it is arranged below the fixed screen part 32, as shown in FIG. In this second position, the movable diaphragm part 34 is in the operating position of the headlight for high beam. The light reflected by the lower reflector region 18 can pass this and the fixed diaphragm part 32 in the second position of the movable diaphragm part 34 and emerge from the headlight and illuminates a measuring screen 60 shown in FIG. 9 and arranged in front of the headlight in an area designated by 62.

Das in der Betriebsstellung Fernlicht aus dem Scheinwerfer austretende Fernlichtbühdel ist somit durch das vom oberen Reflektorbereich 16 und das vom unteren Reflektorbereich 18 reflektierte Licht gebildet, während das in der Betriebsstellung Abblendlicht aus dem Scheinwerfer austretenden Abblendlichtbündel nur durch das vom oberen Reflektorbereich 16 reflektierte Licht gebildet ist. In der Betriebsstellung Fernlicht kann das vom unteren Reflektorbereich 18 reflektierte Licht durch die Linse 24 hindurchtreten und dabei abgelenkt werden oder es kann auch vorgesehen werden, daß das vom unteren Reflektorbereich 18 reflektierte Licht an der Linse 24 vorbeigelangt und somit durch diese nicht abgelenkt wird. Dabei können jedoch an der Abdeckscheibe optisch wirksame Elemente vorgesehen sein, durch die das vom unteren Reflektorbereich 18 reflektierte Licht abgelenkt wird.The high beam emerging from the headlight in the high beam operating position is thus formed by the light reflected by the upper reflector region 16 and by the lower reflector region 18, while the low beam emerging from the headlight in the low beam operating position is formed only by the light reflected by the upper reflector region 16 . In the high beam operating position, the light reflected by the lower reflector region 18 can pass through the lens 24 and be deflected thereby, or it can also be provided that the light reflected by the lower reflector region 18 passes the lens 24 and is therefore not deflected by the latter. In this case, however, optically effective elements can be provided on the cover plate, by means of which the light reflected by the lower reflector region 18 is deflected.

Der obere Reflektorbereich 16 ist dahingehend optimiert, daß das von diesem reflektierte Licht in Zusammenwirkung mit der Linse 24 ein wirkungsvolles Abblendlichtbündel bildet, während der untere Reflektorbereich 18 dahingehend optimiert ist, daß das von diesem reflektierte Licht zusammen mit dem vom oberen Reflektorbereich 16 reflektierten Licht ein wirkungsvolles Fernlichtbündel bildet. Der Übergang zwischen den beiden Reflektorbereichen 16,18 kann kontinuierlich, das heißt stufenlos erfolgen, oder auch mit einer Stufe. Der obere Reflektorbereich 16 kann so ausgebildet sein, daß er in axialen, das heißt die optische Achse 14 enthaltenden Längsschnitten Ellipsen oder ellipsenähnliche Kurven enthält. Dabei ist der obere Reflektorbereich 16 nicht rotationssymmetrisch ausgebildet, enthält also in unterschiedlichen axialen Längsschnitten unterschiedliche Kurven. Der untere Reflektorbereich 18 kann ebenfalls so ausgebildet sein, daß er in unterschiedlichen axialen Längsschnitten unterschiedliche Ellipsen oder ellipsenähnliche Kurven enthält und von der Gasentladungslampe 12 ausgesandtes Licht als ein konvergentes Lichtbündel reflektiert.The upper reflector region 16 is optimized in such a way that the light reflected by it in cooperation with the lens 24 forms an effective low beam, while the lower reflector region 18 is optimized in such a way that the light reflected by it together with the light reflected by the upper reflector region 16 forms an effective high beam. The transition between the two reflector regions 16, 18 can be continuous, that is to say stepless, or also with one step. The upper reflector region 16 can be designed such that it contains ellipses or elliptical-like curves in axial longitudinal sections, that is to say the optical axis 14. The upper reflector region 16 is not rotationally symmetrical, so it contains different curves in different axial longitudinal sections. The lower reflector region 18 can also be designed such that it contains different ellipses or ellipse-like curves in different axial longitudinal sections and reflects light emitted by the gas discharge lamp 12 as a convergent light bundle.

Der untere Reflektorbereich 18 kann wie in Figur 1 dargestellt ausgehend von einer mit gestrichelten Linien dargestellten Lage bezüglich dem oberen Reflektorbereich 18 mit seinem in Lichtaustrittsrichtung 22 weisenden Vorderrand um eine senkrecht zur optischen Achse 14 und horizontal verlaufende Achse 35 nach oben geschwenkt sein. Die Schwenkachse 35 kann dabei im Scheitelbereich 38 des Reflektors 10 angeordnet sein.The lower reflector region 18 can, as shown in FIG. 1, be pivoted upward from a position shown in broken lines with respect to the upper reflector region 18 with its front edge pointing in the direction of light exit 22 about an axis 35 running perpendicular to the optical axis 14 and horizontally. The pivot axis 35 can be arranged in the apex region 38 of the reflector 10.

Zusätzlich zur Bewegung des beweglichen Blendenteils 34 zwischen seiner vorstehend beschriebenen ersten und zweiten Stellung bei der Umschaltung des Scheinwerfers zwischen der Betriebsstellung für Abblendlicht und der Betriebsstellung für Fernlicht kann auch die Gasentladungslampe 12 in Richtung der optischen Achse 14 und/oder in vertikaler Richtung bezüglich der optischen Achse 14 bewegt werden. Vorzugsweise befindet sich die Gasentladungslampe 12 in der Betriebsstellung für Fernlicht in einer ersten Stellung, in der deren Lichtbogen 13 wie in Figur 1 mit durchgezogenen Linien dargestellt etwa auf der optischen Achse 14 angeordnet ist und in einem bestimmten Abstand vom Scheitel 38 des Reflektors 10 entfernt angeordnet ist. In der Betriebsstellung des Scheinwerfers für Abblendlicht befindet sich die Gasentladungslampe 12 in einer zweiten Stellung, in der deren Lichtbogen 13 wie in Figur 1 mit gestrichelten Linien dargestellt bezüglich der optischen Achse 14 nach unten versetzt und in einem geringeren Abstand vom Reflektorscheitel 38 angeordnet ist als in ihrer ersten Stellung. Hierdurch wird erreicht, daß in der Betriebsstellung des Scheinwerfers für Abblendlicht eine hohe Beleuchtungsstärke dicht unterhalb der Helldunkelgrenze vorhanden ist und in der Betriebsstellung für Fernlicht der Bereich vor dem Fahrzeug, der mit hoher Beleuchtungsstärke beleuchtet wird, in größerem Abstand vor dem Fahrzeug angeordnet ist, also der Fernbereich vor dem Fahrzeug stärker beleuchtet wird als in der Betriebsstellung für Abblendlicht.In addition to the movement of the movable diaphragm part 34 between its first and second positions described above when the headlight is switched between the low beam operating position and the high beam operating position, the gas discharge lamp 12 can also move in the direction the optical axis 14 and / or in the vertical direction with respect to the optical axis 14. The gas discharge lamp 12 is preferably in the operating position for high beam in a first position in which its arc 13 is arranged approximately on the optical axis 14, as shown in solid lines in FIG. 1, and is arranged at a certain distance from the apex 38 of the reflector 10 is. In the operating position of the headlamp for low beam, the gas discharge lamp 12 is in a second position, in which its arc 13, as shown in FIG. 1 with dashed lines, is offset downward with respect to the optical axis 14 and is arranged at a smaller distance from the reflector apex 38 than in FIG their first position. This ensures that in the operating position of the headlamp for low beam there is a high illuminance just below the light-dark limit and in the operating position for high beam the area in front of the vehicle which is illuminated with high illuminance is arranged at a greater distance in front of the vehicle, i.e. the far area in front of the vehicle is illuminated more than in the low beam operating position.

Das feststehende Blendenteil 32 kann ebenfalls eine Oberkante 40 aufweisen, die wirksam ist, wenn sich das bewegliche Blendenteil 34 in der Betriebsstellung des Scheinwerfers für Fernlicht in seiner zweiten Stellung gemäß Figur 3 befindet. Die Oberkante 40 des feststehenden Blendenteils 32 ist vorzugsweise horizontal angeordnet und durch diese wird nur ein geringer Teil des vom unteren Reflektorbereich 18 reflektierten Lichts abgeschirmt, der sowieso nur wenig zum Fernlichtbündel beitragen würde.The fixed diaphragm part 32 can also have an upper edge 40 which is effective when the movable diaphragm part 34 is in its second position according to FIG. 3 in the operating position of the headlight for high beam. The upper edge 40 of the fixed diaphragm part 32 is preferably arranged horizontally and by this only a small part of the light reflected from the lower reflector region 18 is shielded, which would make little contribution to the high beam anyway.

Das bewegliche Blendenteil 34 kann bezüglich dem feststehenden Blendenteil 32 in vertikaler Richtung geradlinig bewegbar sein oder es kann alternativ vorgesehen werden, daß das bewegliche Blendenteil 34 um eine etwa senkrecht zur optischen Achse 14 etwa horizontal verlaufende Achse 42 schwenkbar ist. Das bewegliche Blendenteil 34 kann dabei am feststehenden Blendenteil 32 geführt sein oder über die Achse 42 am feststehenden Blendenteil 32 gelagert sein. Zur Bewegung des Blendenteils 34 ist ein Stellelement 44 vorgesehen, das elektromotorisch, hydraulisch oder pneumatisch wirksam sein kann und das durch eine Steuereinrichtung 46 betätigt wird. Die Steuereinrichtung 46 ist mit dem Lichtschalter 47 des Fahrzeugs verbunden, mit dem Fahrzeuglenker zwischen Abblendlicht und Fernlicht umschaltet, und betätigt das Stellelement 44 entsprechend.The movable diaphragm part 34 can be moved in a straight line with respect to the fixed diaphragm part 32 in the vertical direction or it can alternatively be provided that the movable diaphragm part 34 can be pivoted about an axis 42 which is approximately horizontal to the optical axis 14 and approximately horizontal. The movable screen part 34 can be guided on the fixed screen part 32 or be mounted on the fixed screen part 32 via the axis 42. To move the diaphragm part 34, an adjusting element 44 is provided, which can be electromotive, hydraulic or pneumatic and which is actuated by a control device 46. The control device 46 is connected to the light switch 47 of the vehicle, with which the vehicle driver switches between low beam and high beam, and actuates the actuating element 44 accordingly.

In den Figuren 2 bis 4 ist die Blendenanordnung 30 gemäß einem ersten Ausführungsbeispiel dargestellt, bei dem die Oberkante 36 des beweglichen Blendenteils 34 zwei nebeneinander angeordnete Kantenabschnitte 36a und 36b aufweist. Die beiden Kantenabschnitte 36a und 36b sind relativ zueinander geneigt angeordnet und schließen am Blendenteil 34 einen Winkel α von etwa 165° ein. Die beiden Kantenabschnitte 36a,36b stoßen etwa im Bereich der optischen Achse 14 aneinander. In Figur 2 ist das bewegliche Blendenteil 34 so angeordnet, daß der in Lichtaustrittsrichtung 22 gesehen rechte Kantenabschnitt 36b etwa horizontal angeordnet ist und der linke Kantenabschnitt 36a zum Außenrand des Blendenteils 34 hin nach unten geneigt verläuft. Die Kantenabschnitte 36a und 36b werden wegen des vom oberen Reflektorbereich 16 als konvergentes Lichtbündel reflektierten Lichts sowohl höhenals auch seitenverkehrt abgebildet. In Figur 10 ist ein vor dem Scheinwerfer angeordneter Meßschirm 60 dargestellt, der von dem vom Scheinwerfer ausgesandten Abblendlichtbündel in einem mit 64 bezeichneten Bereich beleuchtet wird. Der rechte Kantenabschnitt 36b des Blendenteils 34 erzeugt vor dem Fahrzeug auf der linken Verkehrsseite eine horizontale Helldunkelgrenze 66 und der linke Kantenabschnitt 36a erzeugt auf der rechten Verkehrsseite eine nach rechts ansteigende Helldunkelgrenze 68. Somit erfüllt das aus dem Scheinwerfer austretende Lichtbündel gesetzliche Vorschriften in Europa, sogenannte ECE-Regelungen, für asymmetrisches Abblendlicht. In dieser Stellung gemäß Figur 2 befindet sich das bewegliche Blendenteil 34 wenn das Fahrzeug in einem Land mit Rechtsverkehr betrieben wird. Das bewegliche Blendenteil 34 ist nun zusätzlich zu seiner Bewegbarkeit zur Umschaltung des Scheinwerfers zwischen der Betriebsstellung für Abblendlicht und für Fernlicht zusätzlich auch um eine etwa parallel zur optischen Achse 14 verlaufende Achse 48 in eine zweite Stellung gemäß Figur 4 schwenkbar. Die Achse 48 fällt dabei vorzugsweise mit der optischen Achse 14 zumindest annähernd zusammen. In dieser zweiten Stellung des beweglichen Blendenteils 34 ist nun der linke Kantenabschnitt 36a etwa horizontal angeordnet und der rechte Kantenabschnitt 36b verläuft zum rechten Rand hin nach unten geneigt. Entsprechend wird durch den horizontalen Kantenabschnitt 36a auf der rechten Verkehrsseite eine in Figur 10 gestrichelt dargestellte horizontale Helldunkelgrenze 66' erzeugt und durch den geneigten Kantenabschnitt 36b wird auf der linken Verkehrsseite eine nach oben ansteigende Helldunkelgrenze 68' erzeugt. In dieser zweiten, geschwenkten Stellung befindet sich das bewegliche Blendenteil 34 wenn das Fahrzeug in einem Land mit Linksverkehr betrieben wird. In beiden Stellungen des beweglichen Blendenteils 34 weist dieses die nebeneinander angeordneten Kantenabschnitte 36a,36b auf, die in vertikaler Richtung relativ zueinander versetzt sind.FIGS. 2 to 4 show the diaphragm arrangement 30 according to a first exemplary embodiment, in which the upper edge 36 of the movable diaphragm part 34 has two edge sections 36a and 36b arranged next to one another. The two edge sections 36a and 36b are arranged inclined relative to one another and form an angle α of approximately 165 ° on the diaphragm part 34. The two edge sections 36a, 36b abut one another approximately in the region of the optical axis 14. In FIG. 2, the movable screen part 34 is arranged in such a way that the right edge section 36b, viewed in the direction of light exit 22, is arranged approximately horizontally and the left edge section 36a slopes downward toward the outer edge of the screen part 34. The edge sections 36a and 36b are imaged both vertically and laterally because of the light reflected by the upper reflector region 16 as a convergent light beam. FIG. 10 shows a measuring screen 60 arranged in front of the headlight, which is illuminated by the low beam emitted by the headlight in an area designated by 64. The right edge portion 36b of the panel part 34 creates a horizontal one in front of the vehicle on the left traffic side The light-dark boundary 66 and the left edge section 36a produce a light-dark boundary 68 rising to the right on the right-hand side of the traffic. The light beam emerging from the headlight thus fulfills legal requirements in Europe, so-called ECE regulations, for asymmetrical low beam. In this position according to FIG. 2, the movable cover part 34 is located when the vehicle is operated in a country with right-hand traffic. In addition to its mobility for switching the headlamp between the operating position for low beam and for high beam, the movable diaphragm part 34 can now also be pivoted about an axis 48 running approximately parallel to the optical axis 14 into a second position according to FIG. 4. The axis 48 preferably coincides at least approximately with the optical axis 14. In this second position of the movable screen part 34, the left edge section 36a is now arranged approximately horizontally and the right edge section 36b is inclined downward toward the right edge. Correspondingly, a horizontal light-dark boundary 66 'shown in dashed lines in FIG. 10 is generated by the horizontal edge section 36a on the right-hand side of the traffic, and a light-dark boundary 68' rising upwards is generated by the inclined edge section 36b on the left-hand traffic side. In this second, pivoted position, the movable panel part 34 is located when the vehicle is operated in a country with left-hand traffic. In both positions of the movable screen part 34, the latter has the edge sections 36a, 36b which are arranged next to one another and which are offset relative to one another in the vertical direction.

Die Schwenkung des beweglichen Blendenteils 34 um die Achse 48 wird durch ein weiteres Stellelement 50 bewirkt, das exzentrisch zur Achse 48 am Blendenteil 34 angreift. Das Stellelement 50 kann wie das Stellelement 44 zur Bewegung des Blendenteils 34 zwischen dessen Abblendlicht- und Fernlichtstellung elektromotorisch, hydraulisch oder pneumatisch wirksam sein und ist vom Fahrzeuglenker über ein Schaltelement 52 betätigbar.The pivoting of the movable diaphragm part 34 about the axis 48 is effected by a further actuating element 50 which acts on the diaphragm part 34 eccentrically to the axis 48. The actuating element 50, like the actuating element 44, can move of the aperture part 34 between its low beam and high beam positions can be electromotive, hydraulic or pneumatic and can be actuated by the vehicle driver via a switching element 52.

In den Figuren 5 und 6 ist die Blendenanordnung 130 gemäß einem zweiten Ausführungsbeispiel dargestellt, wobei das feststehende Blendenteil 132 gegenüber dem ersten Ausführungsbeispiel nicht verändert ist und das bewegliche Blendenteil 134 wie beim ersten Ausführungsbeispiel zur Umschaltung zwischen Abblendlicht und Fernlicht bewegbar ist. Das bewegliche Blendenteil 134 weist die Oberkante 136 auf, mit den beiden nebeneinander angeordneten Kantenabschnitte 136a und 136b. Die Kantenabschnitte 136a und 136b schließen am Blendenteil 134 einen Winkel α von etwa 165° ein, stoßen jedoch nicht im Bereich der optischen Achse 14 aneinander, sondern in horizontaler Richtung zu dieser versetzt. Ist das Fahrzeug, das mit dem vorstehend beschriebenen Scheinwerfer ausgerüstet ist, überwiegend für den Einsatz in Ländern mit Rechtsverkehr vorgesehen, so erstreckt sich in der Stellung des Blendenteils 134 für Rechtsverkehr gemäß den durchgezogenen Linien in Figur 5 der geneigte linke Kantenabschnitt 136a nach rechts bis über die optische Achse 14 hinaus und der rechte, horizontal angeordnete Kantenabschnitt 136b ist nur rechts der optischen Achse 14 ausgebildet. Hierdurch wird das vom oberen Reflektorbereich 16 reflektierte Licht gegenüber der symmetrischen Ausführung des Blendenteils 34 gemäß dem ersten Ausführungsbeispiel besser genutzt und das vom Scheinwerfer ausgesandte Abblendlichtbündel weist auf der eigenen, das heißt der rechten Verkehrsseite eine große Reichweite auf. In der um die Achse 148 geschwenkten Stellung des Blendenteils 134 für Linksverkehr ist, wie in Figur 5 mit gestrichelten Linien dargestellt, der linke Kantenabschnitt 136a horizontal angeordnet und reicht nach rechts über die optische Achse 14 hinaus und der rechte Kantenabschnitt 136b ist geneigt angeordnet, wobei dieser entsprechend jedoch nicht bis zur optischen Achse 14 reicht.FIGS. 5 and 6 show the diaphragm arrangement 130 in accordance with a second exemplary embodiment, the fixed diaphragm part 132 not being changed compared to the first exemplary embodiment and the movable diaphragm part 134 being movable, as in the first exemplary embodiment, for switching between low beam and high beam. The movable screen part 134 has the upper edge 136, with the two edge sections 136a and 136b arranged next to one another. The edge sections 136a and 136b form an angle α of approximately 165 ° on the diaphragm part 134, but do not abut one another in the region of the optical axis 14, but offset in the horizontal direction. If the vehicle which is equipped with the headlight described above is primarily intended for use in countries with right-hand traffic, then in the position of the aperture part 134 for right-hand traffic, according to the solid lines in FIG. 5, the inclined left edge section 136a extends to the right to over the optical axis 14 and the right, horizontally arranged edge section 136b is formed only to the right of the optical axis 14. As a result, the light reflected by the upper reflector region 16 is better used compared to the symmetrical design of the diaphragm part 34 according to the first exemplary embodiment, and the low beam emitted by the headlight has a long range on its own side, that is to say on the right-hand side of the traffic. In the position of the diaphragm part 134 pivoted about the axis 148 for left-hand traffic, as shown in FIG. 5 with dashed lines, the left edge section 136a is arranged horizontally and extends to the right beyond the optical axis 14 and the right edge section 136b is arranged inclined, but this does not correspondingly extend as far as the optical axis 14.

Die Blendenanordnung 130 gemäß Figur 6 ist vorgesehen für ein Fahrzeug, das überwiegend in Ländern mit Linksverkehr eingesetzt wird. Dabei ist das bewegliche Blendenteil 134 so ausgebildet, daß in der Stellung des Blendenteils 134 für Linksverkehr dessen rechter Kantenabschnitt 136b wie in Figur 6 mit durchgezogenen Linien dargestellt, geneigt angeordnet ist und nach links bis über die optische Achse 14 hinausreicht und der nur links der optischen Achse 14 angeordnete Kantenabschnitt 136a horizontal angeordnet ist. Durch diese Ausbildung des Blendenteils 134 wird wiederum eine gute Nutzung des vom oberen Reflektorbereichs 16 reflektierten Lichts und eine große Reichweite des aus dem Scheinwerfer austretenden Abblendlichtbündels auf der eigenen, das heißt der linken Verkehrsseite erreicht. In der in Figur 6 mit gestrichelten Linien dargestellten, um die Achse 148 geschwenkten Stellung des Blendenteils 134 für Rechtsverkehr ist entsprechend der rechte Kantenabschnitt 136b horizontal angeordnet und reicht nach links über die optische Achse 14 hinaus und der linke Kantenabschnitt 136a ist geneigt angeordnet. Für die Blendenanordnung 130 gemäß Figur 6 kann das bewegliche Blendenteil 134 der Ausführung von Figur 5 verwendet werden, indem dieses umgekehrt angeordnet wird, das heißt so, daß dessen in Figur 5 dem Reflektor 10 zugewandte Seite in Figur 6 dem Reflektor 10 abgewandt ist.The panel arrangement 130 according to FIG. 6 is provided for a vehicle which is predominantly used in countries with left-hand traffic. The movable diaphragm part 134 is designed such that, in the position of the diaphragm part 134 for left-hand traffic, its right edge section 136b, as shown in solid lines in FIG. 6, is inclined and extends to the left beyond the optical axis 14 and only to the left of the optical axis Axis 14 arranged edge portion 136a is arranged horizontally. This design of the aperture part 134 in turn ensures good use of the light reflected by the upper reflector region 16 and a large range of the low beam emerging from the headlight on the driver's own, that is to say the left, traffic side. In the position of the diaphragm part 134 pivoted about the axis 148 for right-hand traffic, shown in dashed lines in FIG. 6, the right edge section 136b is accordingly arranged horizontally and extends to the left beyond the optical axis 14 and the left edge section 136a is arranged inclined. For the diaphragm arrangement 130 according to FIG. 6, the movable diaphragm part 134 of the embodiment of FIG. 5 can be used by arranging it in reverse, that is to say that its side facing the reflector 10 in FIG. 5 faces away from the reflector 10 in FIG.

In Figur 7 ist die Blendenanordnung 230 gemäß einem dritten Ausführungsbeispiel dargestellt. Das bewegliche Blendenteil 234 weist dabei die über das feststehende Blendenteil 232 hinausragende Oberkante 236 auf, die die beiden nebeneinander angeordneten Kantenabschnitte 236a und 236b aufweist, die sich beide etwa horizontal erstrecken und die in vertikaler Richtung zueinander versetzt sind. Im Bereich der optischen Achse 14 ist ein Übergang zwischen den beiden Kantenabschnitten 236a und 236b durch einen geneigten Abschnitt 236c gebildet. Das Blendenteil 234 weist außerdem an seinem unteren Rand ebenfalls eine Kante 237 auf, die zwei nebeneinander angeordnete Kantenabschnitte 237a und 237b aufweist, die in vertikaler Richtung gleichsinnig zueinander versetzt sind wie die Kantenabschnitte 236a und 236b der Oberkante 236. In Figur 7 ist das Blendenteil 234 mit durchgezogenen Linien in seiner Stellung für Rechtsverkehr dargestellt, in der der linke Kantenabschnitt 236a tiefer angeordnet ist als der rechte Kantenabschnitt 236b. Entsprechend ist der linke Kantenabschnitt 237a der Unterkante 237 tiefer angeordnet als deren rechter Kantenabschnitt 237b. In Figur 11 ist der Meßschirm 60 bei der Beleuchtung durch das vom Scheinwerfer ausgesandte Abblendlichtbündel dargestellt. Der Meßschirm 60 wird in einem mit 70 bezeichneten Bereich beleuchtet, der auf der Gegenverkehrsseite, das heißt der linken Verkehrsseite die durch den rechten Kantenabschnitt 236b erzeugte horizontale Helldunkelgrenze 72 aufweist und auf der eigenen, das heißt der rechten Verkehrsseite eine durch den linken Kantenabschnitt 236a erzeugte, ebenfalls horizontale Helldunkelgrenze 74 aufweist, die aber höher angeordnet ist als die Helldunkelgrenze 72 auf der Gegenverkehrsseite. Somit erfüllt das aus dem Scheinwerfer mit der Blendenanordnung 230 gemäß dem dritten Ausführungsbeispiel austretende Abblendlichtbündel gesetzliche Vorschriften in USA und Japan.FIG. 7 shows the diaphragm arrangement 230 according to a third exemplary embodiment. The movable diaphragm part 234 has the upper edge 236 which projects beyond the fixed diaphragm part 232 and which has the two edge sections 236a and 236b arranged next to one another, both of which extend approximately horizontally and which are offset from one another in the vertical direction. In the field of optical Axis 14 forms a transition between the two edge sections 236a and 236b by an inclined section 236c. The cover part 234 also has an edge 237 on its lower edge, which has two edge sections 237a and 237b arranged next to one another, which are offset in the vertical direction in the same way as the edge sections 236a and 236b of the upper edge 236. In FIG. 7, the cover part 234 shown with solid lines in its position for right-hand traffic, in which the left edge section 236a is arranged lower than the right edge section 236b. Accordingly, the left edge section 237a of the lower edge 237 is arranged lower than its right edge section 237b. In Figure 11, the measuring screen 60 is shown when illuminated by the low beam emitted by the headlight. The measuring screen 60 is illuminated in an area designated by 70, which has the horizontal light-dark boundary 72 generated by the right edge section 236b on the oncoming traffic side, that is to say the left traffic side, and one generated by the left edge section 236a on its own, that is to say the right traffic side , also has a horizontal light-dark boundary 74, but which is arranged higher than the light-dark boundary 72 on the oncoming traffic side. The low beam bundle emerging from the headlight with the aperture arrangement 230 according to the third exemplary embodiment thus meets legal requirements in the USA and Japan.

Zur Umschaltung auf Linksverkehr ist das Blendenteil 234 um eine etwa senkrecht zur optischen Achse 14 und etwa horizontal verlaufende Achse 254 schwenkbar. Die Achse 254 verläuft in vertikaler Richtung betrachtet durch die Mitte des Blendenteils 234. In Figur 7 ist das Blendenteil 234 in seiner um die Achse 254 geschwenkten Stellung für Linksverkehr mit gestrichelten Linien dargestellt, in der nun die Kante 237 über das feststehende Blendenteil 232 hinausragt und die Helldunkelgrenze des Abblendlichtbündels erzeugt. Dabei ist der linke Kantenabschnitt 237a in vertikaler Richtung höher angeordnet als der rechte Kantenabschnitt 237b. Entsprechend wird der Meßschirm 60 durch das aus dem Scheinwerfer austretende Abblendlichtbündel im Bereich 70 beleuchtet, der auf der Gegenverkehrsseite, das heißt der rechten Verkehrsseite eine durch den linken Kantenabschnitt 237a erzeugte, gestrichelt dargestellte horizontale Helldunkelgrenze 72' auf und auf der eigenen Verkehrsseite, das heißt der linken Verkehrsseite eine durch den rechten Kantenabschnitt 237b erzeugte ebenfalls horizontale aber höher angeordnete Helldunkelgrenze 74' auf. Das bewegliche Blendenteil 234 gemäß dem dritten Ausführungsbeispiel ist außerdem wie beim ersten Ausführungsbeispiel zur Umschaltung zwischen Abblendlicht und Fernlicht bewegbar.To switch to left-hand traffic, the diaphragm part 234 can be pivoted about an axis 254 which is approximately perpendicular to the optical axis 14 and approximately horizontally. The axis 254, viewed in the vertical direction, runs through the center of the panel part 234. In FIG. 7, the panel part 234 is shown in its position pivoted about the axis 254 for left-hand traffic with dashed lines, in which the edge 237 now extends beyond the fixed aperture part 232 and generates the light-dark boundary of the low beam. The left edge section 237a is arranged higher in the vertical direction than the right edge section 237b. Correspondingly, the measuring screen 60 is illuminated by the dipped beam emerging from the headlight in the area 70 which, on the oncoming traffic side, that is to say the right traffic side, a horizontal light-dark boundary 72 ′ generated by the left edge section 237a and shown in dashed lines on and on its own traffic side, that is to say On the left-hand side of the traffic, a light-dark boundary 74 ′, which is also horizontal but is arranged higher, is generated by the right edge section 237b. The movable diaphragm part 234 according to the third exemplary embodiment is also movable, as in the first exemplary embodiment, for switching between low beam and high beam.

In Figur 8 ist die Blendenanordnung 330 gemäß einem vierten Ausführungsbeispiel dargestellt und weist das feststehende Blendenteil 332 und das bewegliche Blendenteil 334 auf. Die Oberkante 336 des Blendenteils 334 ist gleich ausgebildet wie beim dritten Ausführungsbeispiel, weist also die beiden horizontal verlaufenden und in vertikaler Richtung zueinander versetzten Kantenabschnitte 336a und 336b auf. An seinem unteren Rand weist das Blendenteil 334 ebenfalls eine Kante 337 auf, mit zwei nebeneinander angeordneten jeweils horizontal verlaufenden Kantenabschnitten 337a und 337b. Die Kantenabschnitte 337a,337b der unteren Kante 337 sind spiegelbildlich zu den Kantenabschnitten 326a,336b der Oberkante 336 angeordnet, der linke Kantenabschnitt 337a ist höher angeordnet als der rechte Kantenabschnitt 337b. In Figur 8 ist das Blendenteil 334 mit durchgezogenen Linien in seiner Stellung für Rechtsverkehr angeordnet, in der die Oberkante 336 die Helldunkelgrenze erzeugt. In seine mit gestrichelten Linien dargestellte Stellung für Linksverkehr wird das Blendenteil 334 um eine sich etwa parallel zur optischen Achse 14 und horizontal erstreckende Achse 354 geschwenkt. In dieser Stellung wird die Helldunkelgrenze durch die Kante 337 erzeugt, die nun über das feststehende Blendenteil 332 hinausragt. Dabei ist der höher angeordnete Kantenabschnitt 337b links angeordnet und der tiefer angeordnete Kantenabschnitt 337a rechts angeordnet.FIG. 8 shows the panel arrangement 330 according to a fourth exemplary embodiment and has the fixed panel part 332 and the movable panel part 334. The upper edge 336 of the diaphragm part 334 is of the same design as in the third exemplary embodiment, that is to say it has the two horizontally running and vertically offset edge sections 336a and 336b. At its lower edge, the panel part 334 likewise has an edge 337, with two edge sections 337a and 337b which are arranged next to one another and each run horizontally. The edge sections 337a, 337b of the lower edge 337 are arranged in mirror image to the edge sections 326a, 336b of the upper edge 336, the left edge section 337a is arranged higher than the right edge section 337b. In FIG. 8, the diaphragm part 334 is arranged with solid lines in its position for right-hand traffic, in which the upper edge 336 generates the light-dark boundary. In its position for left-hand traffic shown with dashed lines, the aperture part 334 is pivoted about an axis 354 extending approximately parallel to the optical axis 14 and horizontally. In this position, the light-dark boundary is generated by the edge 337, which now protrudes beyond the fixed diaphragm part 332. The higher edge section 337b is arranged on the left and the lower edge section 337a is arranged on the right.

Claims (10)

Scheinwerfer für Fahrzeuge mit einer Gasentladungslampe (12) als Lichtquelle, mit einem Reflektor (10), der einen oberen Reflektorbereich (16) und einen unteren Reflektorbereich (18) aufweist, wobei von der Gasentladungslampe (12) ausgesandtes Licht vom oberen Reflektorbereich (16) als ein konvergentes Lichtbündel reflektiert wird und eine Abblendlichtbündel bildet und das vom oberen Reflektorbereich (16) und vom unteren Reflektorbereich (18) reflektierte Licht zusammen ein Fernlichtbündel bildet, mit einer in Lichtaustrittsrichtung (22) nach dem Reflektor (10) angeordneten Linse (24), durch die zumindest das vom oberen Reflektorbereich (16) reflektierte Licht hindurchtritt und mit einer zwischen dem Reflektor (10) und der Linse (24) angeordneten Blendenanordnung (30;130;230;330), von der zumindest ein Teil (34;134;234;334) zwischen einer Stellung für Abblendlicht, in der dieses Blendenteil (34;134;234;334) vom unteren Reflektorbereich (18) reflektiertes Licht abschirmt, und einer Stellung für Fernlicht, in der vom unteren Reflektorbereich (18) reflektiertes Licht an diesem Blendenteil (34;134;234;334) vorbeigelangen und aus dem Scheinwerfer austreten kann, verstellbar ist, wobei in der Stellung für Abblendlicht durch eine Kante (36;136;236,237;336,337) des verstellbaren Blendenteils (34;134;234;334) eine Helldunkelgrenze des Abblendlichtbündels erzeugt wird, dadurch gekennzeichnet, daß die Kante (36;136;236,237;336,337) des Blendenteils (34;134;234;334) zwei in horizontaler Richtung nebeneinander angeordnete Kantenabschnitte (36a,b;136a,b;236a,b;237a,b;336a,b;337a,b) aufweist, wobei durch einen Kantenabschnitt (36a,b;136a,b;236a,b;237a,b;336a,b;337a,b) die Helldunkelgrenze auf der eigenen Verkehrsseite erzeugt wird und durch den anderen Kantenabschnitt die Helldunkelgrenze auf der Gegenverkehrsseite erzeugt wird, daß die beiden Kantenabschnitte (36a,b;136a,b;236a,b;237a,b;336a,b;337a,b) in vertikaler Richtung zueinander versetzt angeordnet sind und daß das Blendenteil (34;134;234;334) zwischen einer Stellung für Rechtsverkehr und einer Stellung für Linksverkehr verstellbar ist, wobei in beiden Stellungen jeweils der Kantenabschnitt (36a,b;136a,b;236a,b;237a,b;336a,b;337a,b), der die Helldunkelgrenze auf der eigenen Verkehrsseite erzeugt, in vertikaler Richtung tiefer angeordnet ist als der andere, die Helldunkelgrenze auf der Gegenverkehrsseite erzeugende Kantenabschnitt (36a,b;136a,b;236a,b;237a,b;336a,b;337a,b).Headlight for vehicles with a gas discharge lamp (12) as a light source, with a reflector (10) which has an upper reflector area (16) and a lower reflector area (18), light emitted by the gas discharge lamp (12) from the upper reflector area (16) is reflected as a convergent light beam and forms a low beam and the light reflected from the upper reflector area (16) and from the lower reflector area (18) together forms a high beam with a lens (24) arranged in the light exit direction (22) after the reflector (10) , through which at least the light reflected by the upper reflector region (16) passes and with a diaphragm arrangement (30; 130; 230; 330) arranged between the reflector (10) and the lens (24), at least some of which (34; 134 ; 234; 334) between a position for low beam in which this diaphragm part (34; 134; 234; 334) shields light reflected from the lower reflector region (18), and one Position for high beam, in which light reflected by the lower reflector area (18) can pass this screen part (34; 134; 234; 334) and emerge from the headlight, is adjustable, in the position for low beam by an edge (36; 136 ; 236,237; 336,337) of the adjustable diaphragm part (34; 134; 234; 334) a light-dark boundary of the low beam is generated, characterized in that that the edge (36; 136; 236,237; 336,337) of the diaphragm part (34; 134; 234; 334) has two edge sections (36a, b; 136a, b; 236a, b; 237a, b; 336a, b ; 337a, b), whereby the light-dark boundary is generated on the own traffic side by an edge section (36a, b; 136a, b; 236a, b; 237a, b; 336a, b; 337a, b) and by the other edge section Light-dark boundary is generated on the oncoming traffic side that the two edge sections (36a, b; 136a, b; 236a, b; 237a, b; 336a, b; 337a, b) are staggered in the vertical direction and that the panel part (34; 134; 234; 334) can be adjusted between a position for right-hand traffic and a position for left-hand traffic, whereby in both positions the edge section (36a, b; 136a, b; 236a, b; 237a, b; 336a, b; 337a, b ), which generates the chiaroscuro boundary on its own traffic side, is arranged lower in the vertical direction than the other Ka, which generates the chiaroscuro limit on the oncoming traffic side nten section (36a, b; 136a, b; 236a, b; 237a, b; 336a, b; 337a, b). Scheinwerfer nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Kantenabschnitte (36a,b;136a,b) des Blendenteils (34;134) zueinander geneigt angeordnet sind, wobei in beiden Stellungen des Blendenteils (34;134) der die Helldunkelgrenze auf der Gegenverkehrsseite erzeugende Kantenabschnitt (36a,b;136a,b) horizontal angeordnet ist und der die Helldunkelgrenze auf der eigenen Verkehrsseite erzeugende Kantenabschnitt (36a,b;136a,b) bezüglich einer Horizontalen nach unten geneigt angeordnet ist.Headlamp according to claim 1, characterized in that the two edge sections (36a, b; 136a, b) of the diaphragm part (34; 134) are arranged inclined to one another, with the light-dark boundary on the oncoming traffic side in both positions of the diaphragm part (34; 134) generating edge section (36a, b; 136a, b) is arranged horizontally and the edge section (36a, b; 136a, b) generating the light-dark boundary on its own traffic side is arranged inclined downward with respect to a horizontal. Scheinwerfer nach Anspruch 2, dadurch gekennzeichnet, daß die beiden Kantenabschnitte (36a,b;136a,b) am Blendenteil (34;134) einen Winkel von etwa 165° einschließen.Headlight according to claim 2, characterized in that the two edge sections (36a, b; 136a, b) form an angle of approximately 165 ° on the diaphragm part (34; 134). Scheinwerfer nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Blendenteil (34;134) um eine etwa parallel zur optischen Achse (14) des Reflektors (10) verlaufende Achse (48;148) schwenkbar ist.Headlight according to claim 2 or 3, characterized in that the diaphragm part (34; 134) can be pivoted about an axis (48; 148) running approximately parallel to the optical axis (14) of the reflector (10). Scheinwerfer nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Kantenabschnitte (236a,b;237a,b) des Blendenteils (234) jeweils etwa horizontal angeordnet sind und daß das Blendenteil (234) eine Unterkante (237) aufweist, die ebenfalls zwei in horizontaler Richtung nebeneinander angeordnete Kantenabschnitte (237a,b) aufweist, wobei diese beiden Kantenabschnitte (237a,b) in vertikaler Richtung gleichsinnig zueinander versetzt angeordnet sind wie die Kantenabschnitte (236a,b) der Oberkante (236) und wobei das Blendenteil (234) um eine mittig durch dieses etwa senkrecht zur optischen Achse (14) und etwa horizontal verlaufende Achse (254) drehbar ist, so daß entweder die Oberkante (236) oder die Unterkante (237) die Helldunkelgrenze des Abblendlichtbündels erzeugt.Headlamp according to claim 1, characterized in that the two edge sections (236a, b; 237a, b) of the diaphragm part (234) are each arranged approximately horizontally and in that the diaphragm part (234) has a lower edge (237) which also has two in a horizontal direction Has edge sections (237a, b) arranged next to one another, these two edge sections (237a, b) being arranged offset in the vertical direction in the same direction as the edge sections (236a, b) of the upper edge (236) and the diaphragm part (234) around one can be rotated centrally through this approximately perpendicular to the optical axis (14) and approximately horizontally extending axis (254), so that either the upper edge (236) or the lower edge (237) generates the light-dark boundary of the low beam. Scheinwerfer nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Kantenabschnitte (336a,b;337a,b) des Blendenteils (334) jeweils etwa horizontal angeordnet sind und daß das Blendenteil (334) eine Unterkante (337) aufweist, die ebenfalls zwei in horizontaler Richtung nebeneinander angeordnete Kantenabschnitte (337a,b) aufweist, wobei diese beiden Kantenabschnitte (237a,b) spiegelbildlich zu den Kantenabschnitten (336a,b) der Oberkante (336) angeordnet sind und wobei das Blendenteil (334) um eine mittig durch dieses etwa parallel zur optischen Achse (14) und etwa horizontal verlaufende Achse (354) drehbar ist, so daß entweder die Oberkante (336) oder die Unterkante (337) die Helldunkelgrenze des Abblendlichtbündels erzeugt.Headlight according to claim 1, characterized in that the two edge sections (336a, b; 337a, b) of the diaphragm part (334) are each arranged approximately horizontally and in that the diaphragm part (334) has a lower edge (337) which is also two in a horizontal direction Edge sections (337a, b) arranged next to one another, these two edge sections (237a, b) being arranged in mirror image to the edge sections (336a, b) of the upper edge (336) and the diaphragm part (334) being approximately parallel to one another centrally through this to the optical axis (14) and approximately horizontal axis (354) is rotatable, so that either the upper edge (336) or the lower edge (337) generates the light-dark boundary of the low beam. Scheinwerfer nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß von der Gasentladungslampe (12) ausgesandtes Licht vom unteren Reflektorbereich (18) als konvergentes Lichtbündel reflektiert wird, das in der Stellung des Blendenteils (34;134;234;334) für Fernlicht ebenfalls durch die Linse (24) hindurchtritt.Headlamp according to one of the preceding claims, characterized in that light emitted by the gas discharge lamp (12) is reflected by the lower reflector region (18) as a convergent light beam which, in the position of the diaphragm part (34; 134; 234; 334), also for high beam the lens (24) passes through. Scheinwerfer nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Gasentladungslampe (12) bei der Umschaltung zwischen Abblendlicht und Fernlicht sowohl entlang der optischen Achse (14) als auch in vertikaler Richtung bezüglich der optischen Achse (14) bewegt wird.Headlight according to one of the preceding claims, characterized in that the gas discharge lamp (12) is moved both along the optical axis (14) and in the vertical direction with respect to the optical axis (14) when switching between low beam and high beam. Scheinwerfer nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Übergang zwischen dem oberen Reflektorbereich (16) und dem unteren Reflektorbereich (18) in der horizontalen Mittelebene (20) des Reflektors (10) oder unterhalb dieser verläuft.Headlight according to one of the preceding claims, characterized in that the transition between the upper reflector region (16) and the lower reflector region (18) runs in the horizontal central plane (20) of the reflector (10) or below it. Scheinwerfer nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Übergang zwischen dem oberen Reflektorbereich (16) und dem unteren Reflektorbereich (18) gestuft oder kontinuierlich erfolgt.Headlight according to one of the preceding claims, characterized in that the transition between the upper reflector region (16) and the lower reflector region (18) is graded or continuous.
EP95118342A 1995-01-17 1995-11-22 Vehicle headlamp Expired - Lifetime EP0723108B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19501173 1995-01-17
DE19501173A DE19501173A1 (en) 1995-01-17 1995-01-17 Headlights for vehicles

Publications (2)

Publication Number Publication Date
EP0723108A1 true EP0723108A1 (en) 1996-07-24
EP0723108B1 EP0723108B1 (en) 2001-11-21

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EP95118342A Expired - Lifetime EP0723108B1 (en) 1995-01-17 1995-11-22 Vehicle headlamp

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US (1) US5673990A (en)
EP (1) EP0723108B1 (en)
JP (1) JPH08241602A (en)
DE (2) DE19501173A1 (en)

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EP0862015A2 (en) 1997-02-28 1998-09-02 Hella KG Hueck & Co. Vehicle headlamp
DE19739089A1 (en) * 1997-09-06 1999-03-11 Hella Kg Hueck & Co Headlights for vehicles
FR2769071A1 (en) * 1997-09-26 1999-04-02 Valeo Vision VARIABLE BEAM ELLIPTICAL TYPE HEADLIGHT, IN PARTICULAR FOR MOTOR VEHICLES
EP1010935A2 (en) 1998-12-17 2000-06-21 Hella KG Hueck & Co. Vehicle headlamp
US6116764A (en) * 1997-09-06 2000-09-12 Hella Kg Hueck & Co. Headlight for vehicle
DE10217785C1 (en) * 2002-04-21 2003-10-16 Matthias Brand Light distribution module for automobile headlamp has variable light stop provided as part of carrier attached to headlamp reflector and supporting setting drive
EP1422471A2 (en) * 2002-11-21 2004-05-26 Valeo Vision Elliptical vehicle headlamp emitting different light beams
FR2847657A1 (en) * 2002-11-21 2004-05-28 Valeo Vision ELLIPTICAL PROJECTOR FOR A MOTOR VEHICLE EMITTING DIFFERENT LIGHTING BEAMS
EP1459935A1 (en) * 2003-03-13 2004-09-22 Adam Opel Ag Acuating device for the headlamp of a automotive vehicle
DE10337059A1 (en) * 2003-08-12 2005-04-07 Hella Kgaa Hueck & Co. Headlamp with ellipsoid reflector for motor vehicle has facility to select the use for either left or right-hand side traffic without light loss
EP1701087A2 (en) * 2005-03-08 2006-09-13 Valeo Vision Multi-function headlamp for motor vehicles
DE102006043298A1 (en) * 2006-09-14 2008-03-27 Hella Kgaa Hueck & Co. Projection head light for vehicles, has reflector having two focal points, where light source device is arranged in former focal point of reflector
EP2762772A1 (en) 2005-07-26 2014-08-06 Valeo Vision Lighting assembly for automotive vehicles

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DE19908480C2 (en) * 1999-02-26 2001-02-22 Bosch Gmbh Robert Motor vehicle headlights with different lighting functions
DE19914417B4 (en) * 1999-03-30 2006-04-20 Automotive Lighting Reutlingen Gmbh Headlamp system for vehicles with at least two headlamps for dipped beam
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FR2796447B1 (en) * 1999-07-13 2001-08-17 Valeo Vision PROJECTOR FOR A MOTOR VEHICLE WITH A DOUBLE MOBILE COVER
FR2796448B1 (en) * 1999-07-13 2001-12-21 Valeo Vision PROJECTOR FOR A MOTOR VEHICLE WITH A MULTI-POSITION COVER
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DE10044391B4 (en) * 2000-09-08 2013-09-05 Automotive Lighting Reutlingen Gmbh Headlight for motor vehicles
FR2815310B1 (en) 2000-10-12 2003-02-21 Valeo Vision PROJECTOR FOR MOTOR VEHICLE WITH MOBILE OCCULTATION SCREEN
JP2002190202A (en) 2000-10-12 2002-07-05 Koito Mfg Co Ltd Headlamp
US6796696B2 (en) * 2000-12-05 2004-09-28 Stanley Electric Co., Ltd. Vehicle light with movable reflector portion and shutter portion for selectively switching an illuminated area of light incident on a predetermined portion of the vehicle light during driving
DE10125463A1 (en) * 2001-05-25 2002-11-28 Hella Kg Hueck & Co Projection module for a vehicle headlight
JP2002358805A (en) * 2001-05-30 2002-12-13 Koito Mfg Co Ltd Headlight of vehicle
EP1283390B1 (en) 2001-08-10 2008-10-22 Ichikoh Industries, Ltd. Two-light headlamp
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FR2849156B1 (en) * 2002-12-20 2005-12-16 Valeo Vision MOTOR VEHICLE PROJECTOR PROVIDING AT LEAST TWO FUNCTIONS
US6746143B1 (en) 2003-03-27 2004-06-08 Guide Corporation Variable progressive beam headlamp
CZ298495B6 (en) * 2003-04-08 2007-10-17 Visteon Global Technologies, Inc. Optimization of full-beam light of motor vehicle headlights and motor vehicle headlight per se
US7083304B2 (en) * 2003-08-01 2006-08-01 Illumination Management Solutions, Inc. Apparatus and method of using light sources of differing wavelengths in an unitized beam
US7246917B2 (en) * 2003-08-12 2007-07-24 Illumination Management Solutions, Inc. Apparatus and method for using emitting diodes (LED) in a side-emitting device
EP1673573A4 (en) * 2003-10-06 2016-01-13 Illumination Man Solutions Inc Improved light source using light emitting diodes and an improved method of collecting the energy radiating from them
FR2861832B1 (en) * 2003-10-31 2006-12-15 Valeo Vision PROJECTOR FOR A MOTOR VEHICLE COMPRISING A LIGHT SOURCE FORMED BY A DISCHARGE LAMP
US20050152151A1 (en) * 2004-01-14 2005-07-14 Guide Corporation Adverse weather automatic sign light shield
CN101619834B (en) * 2004-03-30 2011-09-07 照明管理解决方案公司 An apparatus and method for improved illumination area fill
EP1605202B1 (en) 2004-06-09 2016-10-05 Valeo Vision Multifunctional headlamp device
DE102004032797B4 (en) * 2004-07-07 2012-12-27 Automotive Lighting Reutlingen Gmbh Headlight of a motor vehicle with adaptive light distribution
DE102004034838B4 (en) * 2004-07-19 2015-07-23 Daimler Ag Vehicle headlight system with variable beam shape
US20060171153A1 (en) * 2005-02-03 2006-08-03 Hella Kgaa Hueck & Co. Light distribution for headlights of vehicles
JP4614347B2 (en) * 2005-06-23 2011-01-19 株式会社小糸製作所 Vehicle lamp
US7625109B2 (en) * 2005-06-30 2009-12-01 Koito Manufacturing Co., Ltd. Vehicle lamp
CZ302002B6 (en) * 2005-08-10 2010-09-01 Visteon Global Technologies, Inc. Headlight system for motor vehicles
FR2891046B1 (en) * 2005-09-20 2007-10-19 Valeo Vision Sa PROJECTOR FOR A MOTOR VEHICLE EQUIPPED WITH A MULTI-POSITION COVER.
US7410282B2 (en) * 2005-10-25 2008-08-12 Visteon Global Technologies, Inc. Bi-functional headlight module
DE102005059861A1 (en) * 2005-12-15 2007-06-28 Hella Kgaa Hueck & Co. Headlights for vehicles
US7290907B2 (en) * 2006-02-24 2007-11-06 Honda Motor Co., Ltd Vehicle headlamp with daytime running light
JP2007250327A (en) * 2006-03-15 2007-09-27 Stanley Electric Co Ltd Drum type variable shade plate, and headlight using the same
DE102007007466A1 (en) * 2007-02-15 2008-08-21 GM Global Technology Operations, Inc., Detroit Headlamp assembly, method for operating a headlamp assembly and motor vehicle
US7950821B1 (en) 2007-10-26 2011-05-31 Georgitsis Anthony C Auxiliary lighting systems
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US20110110113A1 (en) * 2009-11-10 2011-05-12 Hung Kwan-Ten Control device of a headlamp's high and low beam
US8113700B2 (en) * 2009-11-10 2012-02-14 Raiderson Enterprise Co., Ltd. Headlamp with high and low beam control device
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AT516965B1 (en) * 2015-03-25 2016-12-15 Zkw Group Gmbh Lighting device for vehicle headlights
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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0862015A2 (en) 1997-02-28 1998-09-02 Hella KG Hueck & Co. Vehicle headlamp
DE19708109A1 (en) * 1997-02-28 1998-09-03 Hella Kg Hueck & Co Headlights for vehicles
US5899559A (en) * 1997-02-28 1999-05-04 Hella Kg Hueck & Co. Headlamp for vehicles
DE19739089A1 (en) * 1997-09-06 1999-03-11 Hella Kg Hueck & Co Headlights for vehicles
US6116764A (en) * 1997-09-06 2000-09-12 Hella Kg Hueck & Co. Headlight for vehicle
FR2769071A1 (en) * 1997-09-26 1999-04-02 Valeo Vision VARIABLE BEAM ELLIPTICAL TYPE HEADLIGHT, IN PARTICULAR FOR MOTOR VEHICLES
EP1010935A2 (en) 1998-12-17 2000-06-21 Hella KG Hueck & Co. Vehicle headlamp
DE19858225A1 (en) * 1998-12-17 2000-06-21 Hella Kg Hueck & Co Headlights for vehicles
EP1010935A3 (en) * 1998-12-17 2001-10-17 Hella KG Hueck & Co. Vehicle headlamp
WO2003089840A1 (en) 2002-04-21 2003-10-30 Matthias Brand Light-diffusing component comprising an adjustable screen arrangement
DE10217785C1 (en) * 2002-04-21 2003-10-16 Matthias Brand Light distribution module for automobile headlamp has variable light stop provided as part of carrier attached to headlamp reflector and supporting setting drive
EP1422471A3 (en) * 2002-11-21 2007-12-05 Valeo Vision Elliptical vehicle headlamp emitting different light beams
EP1422471A2 (en) * 2002-11-21 2004-05-26 Valeo Vision Elliptical vehicle headlamp emitting different light beams
FR2847657A1 (en) * 2002-11-21 2004-05-28 Valeo Vision ELLIPTICAL PROJECTOR FOR A MOTOR VEHICLE EMITTING DIFFERENT LIGHTING BEAMS
FR2847655A1 (en) * 2002-11-21 2004-05-28 Valeo Vision ELLIPTICAL PROJECTOR FOR A MOTOR VEHICLE EMITTING DIFFERENT LIGHTING BEAMS
EP1459935A1 (en) * 2003-03-13 2004-09-22 Adam Opel Ag Acuating device for the headlamp of a automotive vehicle
DE10337059A1 (en) * 2003-08-12 2005-04-07 Hella Kgaa Hueck & Co. Headlamp with ellipsoid reflector for motor vehicle has facility to select the use for either left or right-hand side traffic without light loss
EP1701087A2 (en) * 2005-03-08 2006-09-13 Valeo Vision Multi-function headlamp for motor vehicles
FR2883066A1 (en) * 2005-03-08 2006-09-15 Valeo Vision Sa MULTI-FUNCTION LIGHT PROJECTOR FOR MOTOR VEHICLE
US7543969B2 (en) 2005-03-08 2009-06-09 Valeo Vision Headlight with several functions for motor vehicles
EP1701087A3 (en) * 2005-03-08 2014-01-15 Valeo Vision Multi-function headlamp for motor vehicles
EP2762772A1 (en) 2005-07-26 2014-08-06 Valeo Vision Lighting assembly for automotive vehicles
DE102006043298A1 (en) * 2006-09-14 2008-03-27 Hella Kgaa Hueck & Co. Projection head light for vehicles, has reflector having two focal points, where light source device is arranged in former focal point of reflector

Also Published As

Publication number Publication date
DE19501173A1 (en) 1996-07-18
US5673990A (en) 1997-10-07
EP0723108B1 (en) 2001-11-21
DE59509865D1 (en) 2002-01-03
JPH08241602A (en) 1996-09-17

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