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EP1496308B1 - Lampe d'éclairage intérieur avec un élément réfractif - Google Patents

Lampe d'éclairage intérieur avec un élément réfractif Download PDF

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Publication number
EP1496308B1
EP1496308B1 EP04016373A EP04016373A EP1496308B1 EP 1496308 B1 EP1496308 B1 EP 1496308B1 EP 04016373 A EP04016373 A EP 04016373A EP 04016373 A EP04016373 A EP 04016373A EP 1496308 B1 EP1496308 B1 EP 1496308B1
Authority
EP
European Patent Office
Prior art keywords
light
lamp
lamp according
reflector
base
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.)
Expired - Lifetime
Application number
EP04016373A
Other languages
German (de)
English (en)
Other versions
EP1496308A2 (fr
EP1496308A3 (fr
Inventor
Joachim Leibig
Ansgar Weinmann
Kai Hendrik Sabla
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.)
Osram SBT GmbH
Original Assignee
Siteco Beleuchtungstechnik 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
Priority claimed from DE10353644A external-priority patent/DE10353644A1/de
Application filed by Siteco Beleuchtungstechnik GmbH filed Critical Siteco Beleuchtungstechnik GmbH
Publication of EP1496308A2 publication Critical patent/EP1496308A2/fr
Publication of EP1496308A3 publication Critical patent/EP1496308A3/fr
Application granted granted Critical
Publication of EP1496308B1 publication Critical patent/EP1496308B1/fr
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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F21V23/026—Fastening of transformers or ballasts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

  • the present invention relates to a luminaire having a lamp, in particular an elongated lamp, and a reflector associated with the lamp having a light exit opening for emitting a direct light component.
  • a luminaire having a lamp, in particular an elongated lamp, and a reflector associated with the lamp having a light exit opening for emitting a direct light component.
  • Such lights are used in particular for interior lighting. In the interior lighting there is a requirement that the glare of people who are in the lighted room should be largely avoided.
  • Corresponding requirements are specified in relevant standards, for example DIN EN 12464-1 or E DIN 5035-7.
  • a shielding angle which is typically in a range of 45 ° to 80 °, often in the range of 50 ° to 65 °, in particular 65 °, the luminance below a Value of 1000 cd / m 2 , according to older standards or draft standards even below 500 cd / m 2 or 200 cd / m 2 must be.
  • a grid in the light exit opening which has fins or similar elements that limit the exit angle of the light geometrically. For avoiding glare, however, not only those light beams are relevant which run directly from the lamp through the grid without reflection.
  • the light of the lamp is not emitted directly with corresponding lights, but only after reflection through a reflector.
  • a spaced apart from the lamp secondary reflector and a primary reflector are usually required, which surrounds the lamp so far, the light of the lamp is not directly from the light exit opening of the secondary reflector can exit at an angle greater than the shield angle.
  • a grid is additionally provided on the secondary reflector side facing the lamp, which, similar to a grid in a direct-beam luminaire, control the light emission from the lamp to the secondary reflector.
  • Such constructions often result in multiple reflections being required to emit the light through the light exit aperture which reduces the efficiency.
  • DE 4125545 discloses a luminaire with a reflector and with a refractive structure, according to the preamble of claim 1.
  • EP 0 372 272 A1 discloses a mirror grid lamp having a cylindrical light guide coaxially disposed about a tubular lamp.
  • prismatic structures are provided on the outside of the light-guiding body, so that scattered light arises outside the light-guiding body.
  • EP 1 359 371 A1 discloses a lamp with a diffuser basket.
  • the diffuser basket is arranged around the bulbs within a curved main reflector.
  • the diffuser basket is trapezoidal in cross-section perpendicular to the bulbs.
  • a direct light component of a luminaire is to be understood as that light component of a luminaire which is radiated onto the surface to be illuminated without prior reflection on a spatial element, which does not preclude certain proportions of the direct light component from being emitted by the corresponding light exit opening in FIG the light are reflected.
  • the luminaire is designed so that in one or more C-planes, in particular in the C90 and the C180 plane, above a shielding angle to the vertical in a range of 45 ° to 80 °, preferably in one area from 50 ° to 65 ° and in particular at 65 °, the luminance is below a value of 1000 cd / m 2 , optionally also below 500 cd / m 2 or 200 cd / m 2 , in particular such that the lamp mentioned above Standards or draft standards. It can be provided in particular that in the area below the shielding angle, the luminance of the lamp is at least predominantly, preferably completely above 1000 cd / m 2 .
  • the light-directing device has a side which lies with respect to the lamp in the direction of the emission of the direct light component. If the lamp is arranged inside the reflector, it lies on the side of the lamp facing the light exit opening. If the lamp is arranged wholly or partially outside the reflector, it lies on the side facing away from the reflector and the light exit opening side of the lamp. In both cases, this side is arranged so that light of the lamp, which is emitted in the direction of the direct light component, is incident on this side of the light-directing device.
  • the light-directing device can be translucent, partially translucent or opaque on the side lying in the emission direction of the direct light component.
  • a direct light component can be emitted via this side, whereas according to other embodiments, no light is emitted via this side and the luminaire as a whole acts in a manner similar to a secondary lamp.
  • hybrids are possible, such that light is only partially transmitted, so that the area of this side appears bright, but with a lower luminance than the remaining area of the light exit opening.
  • the light-directing device does not necessarily consist exclusively of light-directing and / or translucent elements, but may also have one or more elements and sections which have no light-directing properties or are not translucent.
  • the reflector completely surrounds the lamp at one or more sides, ie in this case the reflector covers the entire extent of the lamp.
  • the lamp is not beyond the light exit opening of the reflector.
  • at one or more Side of the reflector surrounding the lamp only partially ie the reflector does not cover the entire extent of the lamp on this side.
  • the lamp is partially beyond the light exit opening of the reflector.
  • the lamp is arranged outside the reflector and the light-directing device is arranged so that the light emitted from the lamp of the lamp is at least partially, but preferably completely radiated onto the reflector. Such embodiments are particularly suitable when the reflector is to be formed relatively flat.
  • the body has a non-translucent or only partially translucent curved or otherwise concave bottom with respect to the lamp and on this floor a translucent element, in particular a translucent roof with a refractive structure is placed on one side, so that the floor and this element together form the body inside which the lamp is housed.
  • the element has the shape of a flat roof, an outwardly or inwardly curved roof or a roof, which, in a cross section perpendicular to the lamp axis, has the shape of a polygon, which are concave or convex with respect to the lamp can.
  • the invention can provide that the light-directing device, in particular a light-guiding body, the lamp surrounds on two opposite sides, of which, however, only one side is translucent, so that light can be irradiated on this side of the reflector.
  • the other, opposite side may be absorbent, but preferably designed to be reflective, so that it reflects the light incident on them to the opposite side of the light-directing device, so that the light output is increased. In this way, an asymmetrical radiation characteristic of the lamp can be easily achieved.
  • the invention can also provide that the two opposite sides are each transparent, so that light is radiated on both sides of the lamp on the reflector, these two sides may be formed in particular symmetrical to each other, so that, in conjunction with a symmetrical reflector, a symmetrical Lichtabstrahl futurizing arises.
  • Mixed forms are also possible, such that an asymmetrical light-directing device, in particular an asymmetric light-directing body, is combined with a symmetrical reflector or an asymmetric reflector with a symmetrical light-directing device.
  • the invention can also provide that the light-directing device, in particular a light-directing body, is symmetrical with respect to a plane which contains the longitudinal axis of the lamp and intersects the light exit opening for the direct light component. It can be provided in particular that this plane intersects the light exit opening for the direct proportion of light at a right angle.
  • the luminaire may in particular be an elongated luminaire with an elongated lamp which is aligned in the direction of the longitudinal extension of the luminaire, the lamp being substantially parallel to the light exit surface, ie in particular not perpendicular to the light exit surface.
  • the reflector may, in addition to the mentioned light exit opening further light outlet openings, in particular one or more light exit openings for emitting an indirect light component.
  • a luminaire according to the invention can in particular be designed as a directly and indirectly radiating luminaire and have one or more light exit surfaces for the exit of an indirect light component.
  • Such light exit surfaces can be implemented in the simplest case through a hole, in particular through a hole in the reflector.
  • An alternative possibility to implement such a light exit surface is that the reflector in the region of this light exit surface partially translucent, for example, as a perforated plate interprets.
  • the reflector can in the region of this light exit surface, e.g. also be made of a translucent material or it may be a corresponding element, e.g. a plate of a translucent material to be inserted into an opening of the body.
  • a light exit surface for an indirect light component may be arranged so that light from the lamp exits directly from this light exit surface without being influenced by the light directing means. It can be provided in particular that such a light exit surface is located between two side walls of a light-directing body. However, it can also be provided that such a light exit surface is arranged so that light of the lamp, preferably all light emitted via this light exit surface light, must first pass through the light-directing device to get to this light exit surface. For example, such a light exit surface outside a light-directing body forming said light-directing means may be arranged. Thus, for example, the said reflector in areas which lie laterally next to such a light-guiding body, have corresponding light exit surfaces.
  • the invention may provide that the light-directing device with respect to the lamp in the direction of emission of the direct light component lying floor, z. B. has a light exit side facing the bottom, and angled to this floor walls.
  • the bottom and / or the side walls can each be planar. However, floor and / or sidewalls may also have different shapes, e.g. have a V-shape.
  • the floor may be flat or curved or may be composed of several flat or curved sections.
  • the bottom may be concave with respect to the side facing the lamp so as to recede with respect to the lamp in its course, or be convex so as to project toward the lamp.
  • the floor may consist of two planar sections, which enclose an angle of 135 ° to 155 °, in particular 140 °, on the side facing the lamp and in each case enclose an angle of 90 ° with the side walls.
  • the floor may also have a corresponding concave curvature or be formed in the shape of a polygon section with more than two sides.
  • the bottom consists of two planar sections which enclose an angle of 85 ° to 150 ° on the side facing away from the lamp.
  • the bottom protrudes toward the lamp, so that below the projecting portion on the opposite side of the bottom of the lamp a recess is formed in the advantageously electrical and / or mechanical lighting components, such as the wiring or a ballast housed can.
  • the light-directing device comprises a body having in cross section, in particular in a cross section perpendicular to a substantially parallel or slightly inclined to the light exit surface extending lamp axis, the shape of a truncated at the top, open-top triangle or at the tip truncated, has at its base open triangle.
  • the line connecting the two end points of the bottom with a tangent to a side wall, preferably with the tangents to all side walls passing through one of the end points, an angle of 65 ° to 80 °, in particular 70 °.
  • this angle corresponds to the angle between the line through the two endpoints and the respective sidewall.
  • the invention may also provide that this angle is greater than 90 °, preferably 100 ° to 160 °, in particular 150 ° to 160 °, 110 ° to 130 ° or 140 ° to 160 °.
  • This may be provided in particular in connection with line-shaped prisms having a triangular cross-section which extend on one or more, in particular all side walls in the longitudinal direction of the lamp and in cross-section a point angle in a range of 85 ° to 130 °, in particular 90 ° or 116 ° have.
  • the invention may also provide that a plurality of adjoining side walls are provided on each side of the bottom, wherein according to one embodiment, a first side wall immediately adjacent to the bottom forms an obtuse angle with the bottom and lies between the bottom and a further, second side wall adjoins this first side wall and encloses an obtuse or acute angle with this first side wall.
  • the first side wall has line-shaped prisms with a triangular cross-section, which preferably extend in the longitudinal direction of the lamp, have a triangular cross section and a point angle in the range of 90 °, in particular 90 °, or an area near 90 °, z. B.
  • the prisms are directed towards the interior of the body, while the second side wall has line-shaped prisms with a triangular cross section, which preferably extend in the longitudinal direction of the lamp, and in cross-section a point angle with a value from 90 ° or in a range around 90 °, z. B. 85 ° to 100 °, with the prisms of this second side wall are on the outside of the body.
  • the invention may provide that the refractive structure in a cross section, in particular in a cross section perpendicular to a substantially parallel or slightly inclined to the light exit surface extending lamp axis, the light emission limited such that at least the major part of the light on the reflector side facing to a range of angles below a critical angle ⁇ to a perpendicular is restricted to the side wall.
  • this restriction is such that above this critical angle only such small amounts of light are emitted that they are perceived below the viewing angles, under which they are perceived by the viewer, to a luminance of less than 1000 cd / m 2 lead.
  • the invention can also provide that outside the range below the critical angle ⁇ further light components are delivered, which are smaller or substantially smaller than the above-mentioned predominant light component, the side wall is then oriented so that such light components, as far as they are in a region above the shielding angle in a plane in which a shield is required to be radiated immediately, resulting in a luminance above the threshold of the shielding condition, being emitted in a direction related to the observer, in which shielding is not required (For example, in a range of angles below the angle to the vertical relative to the vertical or to a ceiling or wall for the purpose of indirect lighting) and / or these light components are irradiated to the reflector or other optical elements of the lamp that this either only in one form over the Lichtaustri be discharged, which corresponds to the shielding conditions.
  • each light exit point of the side wall of the angle ⁇ is determined by the refractive structure, that light rays that exit at the angle ⁇ from the side wall, do not run through said light exit surface.
  • the angle which these side walls enclose with the base side is selected so that the light is directed essentially to the reflector (possibly also to a second light exit opening). More precisely, each straight line intersects the reflector, which with the surface normal of these side walls includes a smaller angle than the limit angle ⁇ generated by the prisms, which, relative to a perpendicular to the side wall, may also be a shield angle in the sense of a luminance limit above the critical angle with the aforementioned limits.
  • the angle to the vertical or to a perpendicular to the light exit opening which corresponds to the above-mentioned critical angle ⁇ , equal to or greater than the defined by the reflector and the lamp geometric shield angle, this being geometric Ablewinkel is defined as the maximum angle to the vertical or to a perpendicular to the light exit opening, under which a light beam from the lamp (without the said light-directing device) can escape without being reflected by the reflector.
  • ⁇ critical angle
  • other constellations may be provided in which the refractive structure, in particular the prisms of the light-directing device and the shape of the reflector are coordinated so that a shield is generated.
  • the invention may also provide that in a cross-section perpendicular to the lamp axis all straight lines intersecting a side wall of the translucent body and passing through the edge of the light exit opening closest to that side wall enclose an angle to the light exit opening at an angle, which is smaller than a critical angle, which is preferably in the range of 45 ° to 75 °, in particular 60 ° to 70 °. According to certain embodiments, this angle may be about 60 ° or about 68 °.
  • the invention can provide that the refractive structure consists of line-shaped, preferably parallel elements, which have a constant cross section in a cross section perpendicular to the line which follows the element.
  • the said line may in particular be straight and run parallel to the lamp longitudinal axis and / or parallel to the lamp axis.
  • the elements have a tapered from a base side cross-section with two sides, which connect to the base, wherein the sum of the angles which the tangents to the two sides, which run through the end points of the base side with the Include basic side, in a range of 50 ° to 95 °, in particular at 90 ° or 64 °.
  • This cross-section may in particular be symmetrical to a bisector perpendicular to the base side.
  • the cross section has a triangular shape. It can be provided in particular that the base side opposite angle is 90 °.
  • the refractive structure in particular a refractive structure formed in side walls of a light-directing body, is formed on the lamp-facing side of a wall of the light-directing device or on the side away from the lamp side of a wall of this device .
  • all the refractive structures in sidewalls of a light directing body face either inwardly, toward the lamp, or outwardly, i. away from the lamp.
  • the refractive structure is oriented differently, ie at one or more sidewalls inward, facing the lamp and at one or more sidewalls facing outward, away from the lamp.
  • a device which does not or only partially transmits light which is emitted by the lamp in the emission direction of the direct light component of the luminaire, in particular in the case of an arrangement of the lamp within the luminaire, in the direction of the light exit opening for a direct light component ,
  • the bottom of the body is opaque or partially translucent or that between the lamp and the bottom of an element is provided which does not or only partially passes light.
  • a reflective or partially reflective and partially translucent element between the bottom and the lamp is arranged.
  • This element is preferably laid on the ground and may e.g. be inserted into the body or glued to the ground.
  • the element may be a mirror, e.g. aluminum, which reflects light emitted back toward the bottom of the body of the lamp.
  • the mirror is formed in a form which prevents back reflection on the lamp, e.g. in the form of an involute.
  • the mirror or, more generally, the at least partially reflective element follows the contour of the floor and may e.g. B. just be.
  • the floor may be covered with an opaque or partially translucent Be provided coating, which may be particularly directional, non-directional or partially directed reflective. Such a completely or partially reflective coating can be applied, for example by vapor deposition. According to other embodiments, the floor may also consist entirely of a reflective, in particular directionally reflective material.
  • the light exit opening facing side of the body is provided with a reflective coating, so that the body acts on this side as a primary reflector.
  • the light exits through the side walls of the body, and then falls on the reflector of the lamp, which reflects it to one or more light exit openings.
  • this can be the already mentioned light exit opening for emitting a direct light component.
  • the reflector can also be provided with a second light exit opening or, moreover, further light exit openings for emitting an indirect light component.
  • the light emerging from the body can either emerge directly through such light exit openings for the delivery of an indirect light component or after reflection in the reflector.
  • the invention may provide that an element is arranged between the bottom and the lamp, which has a refractive structure which does not transmit light or only partially to the ground or transmitted light to an angular range to a perpendicular to the light exit surface, preferably to a region concentrated from angles below the shielding angle.
  • the element may have prisms that reflect back light, in particular vertically incident light (cat's eye effect).
  • the element may have a structure of line-shaped prisms, which in a preferred embodiment have a cross section with a point angle in a range of 85 ° to 130 °, in particular 90 ° or 116 °.
  • the floor itself has a corresponding refractive structure, wherein additionally a further element with a refractive structure, as described above, can be used to the attenuation, prevention or concentration of certain areas of space through to improve the light passing through the ground.
  • the bottom may have on its outside line-shaped prisms with a cross section in the form of a triangle with a point angle of 116 ° and the element line-shaped prisms with a cross section in the form of a triangle with a point angle of 90 °, preferably parallel to each other, in particular in the direction the longitudinal axis or the center line of the lamp, run.
  • the prisms of the element may either face the floor or be facing away from it. This leads to a wide-beam or deep-radiating characteristic of the light passing through the element. As a result of the orientation of the prisms, that region of the body onto which the light passing through the element is incident can be varied, which opens up further design possibilities in the generation of a desired luminous intensity distribution curve of the entire luminaire.
  • the prisms provided at the bottom are turned away from the lamp with a triangular cross-section and a point angle of 116 ° and accordingly face outward with respect to the direction of the light emerging from the direct light exit light exit.
  • the bottom on its outside or inside line-shaped prisms with a cross-section in the form of a triangle with a point angle of 116 ° and said element also line-shaped prisms with a cross section in the form of a triangle with a point angle of 116 °, wherein in this embodiment, the longitudinal axes of the line-shaped prisms of the bottom and the element are not parallel to each other and in particular can enclose an angle of 90 ° to each other.
  • the invention may provide that at the bottom of the body a film having a corresponding refractive structure is adhered or otherwise applied.
  • the invention may provide that the light-directing device comprises a light-guiding body whose bottom is formed integrally with the side walls.
  • This embodiment is particularly advantageous when the body is made of a translucent material, since even if direct light leakage is prevented from the ground, a comparatively small amount of light is emitted across the ground by light conduction within the body, so that it faces the light exit opening is brightened and the light / dark transition between the body, which sees the viewer in the light exit opening, and the remaining light exit opening is mitigated.
  • the side edge of the bottom and the side walls is provided in each case with a chamfer which extends over only a portion of the thickness, so that the bottom and side walls are connected by a material portion, wherein the chamfers in the manner of a miter abut each other ,
  • this notch is formed on the same side of the starting material as the refractive structures. This allows a particularly simple production, since then the starting material must be structured only on one side.
  • additional elements of the body or lamp such as retaining clips, guide means or the like may be provided, which hold the sidewalls in position relative to the ground.
  • the notch which in this case lies on the outside of the body, is filled with a suitable material. For example, you could eject the area of the notch or even introduce a bar or other element in this notch and there, z. B. by gluing, fix. In this way, the position of the side walls can be stabilized.
  • the inserted material may or may not have the same or similar optical properties as the body.
  • the invention may provide that one or more side walls and / or the bottom have a means for positively holding one or more plate or foil-shaped elements with a refractive structure.
  • the body consists of several parts, namely one A body, which is preferably unstructured, and plates or sheet-like elements having the refractive structure.
  • the device consists of grooves between which the elements are guided, so that they can be inserted in a simple manner.
  • the side walls and the bottom are separate parts. According to one embodiment, the side walls are then glued to the ground. According to an alternative embodiment, the side walls are inserted into corresponding recesses in the ground, where they can be secured by a latching or clamping connection or otherwise.
  • the base consists of a transparent material in order to attenuate the light / dark transitions between the bottom and the rest of the light exit opening, which have been explained above.
  • the passage of light from the sidewalls into the floor may be accomplished by using an adhesive having a similar index of refraction to that of the floor and sidewalls, more generally by filling gaps between sidewalls and floor with a material having a similar refractive index to that of the floor and floor the side walls, to be improved.
  • the material of the light-directing body or of the elements of the light-directing device may in particular be a plastic, e.g. Polymethyl methacrylate (PMMA), polystyrene (PS), a styrene-acrylonitrile copolymer (SAN) or polycarbonate (PC), the plastic preferably being extrudable, or glass, e.g. B. BK7, his.
  • a plastic e.g. Polymethyl methacrylate (PMMA), polystyrene (PS), a styrene-acrylonitrile copolymer (SAN) or polycarbonate (PC)
  • PMMA Polymethyl methacrylate
  • PS polystyrene
  • SAN styrene-acrylonitrile copolymer
  • PC polycarbonate
  • the invention also provides a method of manufacturing a light directing body for use in a luminaire as described above, in which a flat material (preferably two) portions corresponding to the later sidewalls and an intermediate one corresponding to the floor Section are set, and then the side sections are placed opposite the bottom section.
  • the thickness of the material is smaller in order to facilitate the bending.
  • notches may be provided with inclined surfaces in this area, which constitute a miter between the side walls and the bottom part after the erection of the side walls.
  • such indentations can also be provided on that side which lies on the outside after the side walls have been set up. This has an advantage in particular if the outside of the side walls is to be structured.
  • the invention also provides a process for producing a light-conducting body for use in a luminaire as described above, in which a one-piece body having a bottom surface and two side surfaces angled therefrom is produced, preferably by extrusion, and subsequently sheet-like elements , in particular plates or films, which are a refractive structure, in particular a structure of line-shaped parallel prisms, more preferably a structure of parallel linienfömigen prisms with a triangular cross section, attached to the side walls and / or at the bottom.
  • the invention may provide that the elements are glued with the refractive structure to the side surfaces and / or to the bottom surface of the body.
  • the body has a guide for the sheet-like elements with the refractive structure and these are inserted into the guide, so that they are held there form-fitting manner.
  • these sheet-like elements are held in a different manner, for example by clamping connections, snap-in connections, or the like to a body.
  • the invention further provides a method of manufacturing a light directing body for use in a luminaire as described above, wherein the body has a bottom member and has separate sidewalls therefrom, the bottom member having one or more receptacles for receiving the sidewalls and one or more side walls are inserted into such receptacles.
  • the receptacles may have the shape of a groove into which the side walls are inserted.
  • the receptacle can be provided with a securing device, in particular a latching connection, which locks, jams or otherwise secures the side walls in the receiving device.
  • the side walls and / or the bottom may already have an outer wall provided with a refractive structure prior to assembly. However, they may also be unstructured in this assembly, wherein then, as described above, sheet-like elements having the required refractive structure, are attached to the side walls and / or the floor, in particular by gluing, by insertion in guide grooves or the like.
  • the refractive structure is formed in a separate element which is attached to the actual body in the manner described above, it is advantageous that this element is mounted so that the structure to the side wall or the bottom, where the element is attached has, so that the finished body has a smooth surface to the outside and the refractive structure is in the space between the elements and the actual body, so that it is protected from contamination.
  • the elements are preferably located inside the actual body.
  • the light-directing device has a bottom portion, which is followed by a cover, which defines a cavity together with the bottom portion.
  • the cover can be provided both on the side facing the light source and on the side remote from the light source side of the bottom portion.
  • the bottom section may in particular be the bottom of a light-directing body.
  • electrical and / or mechanical components of the lamp in particular wiring, ballasts, switches and the like. Be arranged.
  • the invention may provide that the bottom of the light-directing body is formed by a support profile, in particular a V-shaped support profile, and on this support profile on the side facing away from the lamp, a cover adjoins, which defines a cavity together with the support profile. On the support profile lighting components, which are arranged in the cavity, be attached.
  • the support profile is formed preferably reflective on the side facing the lamp or it is a reflective element which covers the support profile, provided between the support profile and the lamp. This reflective element can rest directly on the support profile. However, it may also be spaced in places or completely from the support profile.
  • the aforesaid covering may be reflective, advantageously diffusely reflective, e.g. be formed matt white, so that the middle part of the lamp over which no light leaks, is brightened by reflection on the cover.
  • the cover may be made of an opaque material, such as metal or an opaque plastic. However, it may also consist of a translucent or photoconductive material, for example also of such a material which is designed to be light-scattering, such as diffusely scattering PMMA. According to a further embodiment, the cover can consist of a clear, transparent material, eg clear PMMA, on one of its surfaces of which a light-scattering structure, for example a prism structure, is formed, which effects light scattering of the transmitted and / or reflected light. According to another embodiment, it can also be provided that the cover consists of a transparent material, in particular a clear or diffusely transparent material, which, preferably on the side facing the cavity enclosed with the support profile, with a diffuse or directionally reflective Layer is provided.
  • a transparent material in particular a clear or diffusely transparent material, which, preferably on the side facing the cavity enclosed with the support profile, with a diffuse or directionally reflective Layer is provided.
  • the lamp shown as an embodiment of the invention comprises a rod-shaped elongate lamp 1 and an elongate reflector 3 in which the lamp 1 is accommodated and whose longitudinal axis is parallel to the lamp axis.
  • the reflector 3 has a light exit opening 5.
  • a bird-wing-shaped roof reflector 7 is provided, which connects via a step 8 to the reflector 5.
  • the reflector 3 and the roof reflector 7 are all formed so that the lamp to the center plane, the in FIG. 1 S is symmetrical.
  • the entire reflector construction therefore consists of two mutually symmetrical halves which abut one another in the center plane S at an angle and form an edge 9.
  • the reflector construction may consist of a part which is constructed in the manner described above. However, it can also consist of several parts.
  • the roof reflector 7 may, but need not, for example, be a separate part inserted into an opening of the reflector 5.
  • the lamp surrounds a light directing body 10 which has two straight side walls 12 and a straight bottom 14 which is substantially parallel to the light exit opening 5.
  • the side walls 12 close with the median plane S an angle ⁇ , which is preferably 20 °. Accordingly, the side walls 12 each include an angle of 70 ° with the bottom 14.
  • the body 10 in cross section has the shape of a truncated at the top triangle.
  • the side walls 12 extend in the direction away from the light exit opening to the roof reflector 7. As can be seen in the FIG. 1 can recognize and in FIG. 2 shown enlarged, the side walls 12 are at the level 8 between the reflector 3 and the roof reflector 7, so that there is no gap through which light can be incident on the walls 12 on the reflector 3.
  • FIG. 1 can recognize and in FIG. 2 shown enlarged
  • the side walls 12 and the bottom 14 are provided on its outer side with line-shaped prisms, which follow parallel lines which extend parallel to the longitudinal axis of the lamp and, accordingly, perpendicular to the plane of the drawing FIG. 1 or 2 stand.
  • these prisms In a cross section perpendicular to the longitudinal axis of the luminaire, these prisms have a triangular cross section, the angle at the top of the prisms, in FIG. 2 denoted by y, is 90 °.
  • the bottom 14 and the region of the transition from the bottom 14 to the side walls 12 are covered on the side facing the lamp 1 with a mirror element 20, which reflects back the light incident on this area and prevents direct passage of light through the bottom 14.
  • the mirror element 20 may for example consist of aluminum or another high-gloss material and may in particular be an inserted component. However, it may also be a foil, with which the inside of the body 10 is lined in the corresponding area. Alternatively, one could also use a coating, e.g. by steaming, provide.
  • a material for the mirror element 20 are conventional high gloss materials into consideration. Particular preference is given to the materials MIRO and MIRO SILVER from Alanod or the material VISIBLE MIRROR from 3M, which have a reflectance of 94% or more.
  • FIG. 1 shows light symmetrical to the center plane S;
  • the lamp longitudinal axis is arranged in the plane S.
  • FIG. 3a schematically shows the horizontal arrangement of a corresponding prism plate with a lamp arranged above.
  • the luminous intensity distribution curve of FIG. 3b shows that the emitted light is emitted substantially to a range of 45 ° to the vertical.
  • the corresponding region of the luminous intensity distribution curve is designated A.
  • the angle to a perpendicular to the plate defining the region A is denoted by ⁇ .
  • Fig. 3b and the corresponding representation of the Fig. 4b will the in Fig. 3a 4a and 4a, respectively, as an idealized punctiform light source located in the center of the coordinate system.
  • the angle ⁇ thus corresponds to the angle of a straight line which passes through the center of the coordinate system and touches the edge of the region A, to the perpendicular to the plate. Beyond 45 °, In particular, in the designated areas B, only light emitted, which are relatively small compared to the light component A. However, small amounts of light can be essential for the glare, as in the luminance, which is used for the assessment of the glare properties of a lamp, the cosine of the viewing angle inversely proportional, so that even small light intensities at large angles close to 90 ° lead to glare could.
  • FIG. 3a shows the same prism plate, but now oriented to include an angle of 15 ° with the vertical.
  • the luminous intensity distribution curve also tilts such that the predominant part of the light emission is emitted above an angle ⁇ ', in the illustrated example in a range of 60 ° to 150 ° to the vertical.
  • the light components B which could possibly lead to glare, are now no longer in a range near 90 °, as in the arrangement of FIG. 2a but on the one hand in a range between 0 ° and 60 ° on the one hand and on the other hand in a range of approximately 180 °. Both angular ranges are not relevant for the glare limitation.
  • the angle ⁇ ie the angle to the vertical by which the side walls 12 are inclined to the vertical, chosen so that the light portion A corresponding light incident on the reflector 3 or at least not directly on the light exit opening for the direct Light component is emitted.
  • the angle ⁇ may be chosen so that a proportion of light A corresponding light component which emerges at a point of a side wall, which is closest to the light exit opening for the direct light exit is limited by a straight line through this point, which intersects the reflector or at least touched.
  • the light emission of the light component A takes place on the reflector 3, so that these light components are not directly, d. H. by light emission without prior reflection, can lead to glare, while the secondary light components B are either radiated into the unshielded area below ⁇ , in which the glare is not critical, or are emitted vertically upward towards the reflector 3.
  • FIG. 1 By the construction according to FIG. 1 is characterized in that on the one hand, a direct passage of light through the bottom 14 is prevented and on the other hand, the side walls provided with prisms 12 are inclined at an angle ⁇ to the center plane S, a complete glare reaches the luminaire, as it was otherwise achieved by a light grid.
  • FIG. 5 schematically shows the beam diagram of the luminaire according to Fig. 1 , It can be seen that the light which is emitted via the side walls is reflected almost completely on the reflector 3, and no light emerges from the bottom 14. It has been shown that a light with the construction of the FIG. 1 not only in the longitudinal and transverse direction, but also in diagonal levels is blinding. Currently, it is believed that the glare dissipation in the transverse direction by the interaction of the prisms and the reflector, while the glare in the longitudinal direction is at least mainly caused by the prisms on the side walls.
  • the body 10 consists of one piece and the side walls 12 and the bottom 14 directly merge, it is achieved that the bottom 14 despite the mirror element 20 does not appear completely dark, since due to light conduction in the body 10, a small proportion of is incident on the side walls 12 incident light in the body 10 to the bottom 14 and there exits in the direction of the light exit surface 5.
  • the roof reflector 7 and the mirror element 20 in such a way that a total reflection in the side walls or, if separate prism sheets or foils are attached to the side walls are avoided in these prism plates or foils.
  • at least the predominant part of the rays reflected by the roof reflector or the mirror element should have an angle of incidence with respect to the perpendicular to the side wall of less than 60 °.
  • the bottom 14 as in FIG. 1 shown on its outside with the line-shaped prisms is provided with a triangular cross-section.
  • manufacturing technology often makes it easier to provide the whole body with prisms on the outside.
  • the prisms on the outside of the bottom 14 may be important if, in a modification of the embodiment, the mirror element 20 is not completely, but only partially reflective and partially translucent. In this case, there is some light guidance by the prisms and a concentration of the emitted luminous flux as shown in FIG. 3b in the form of area A, desired.
  • the reflector 3 has on both sides of the light-conducting body 10 openings for the exit of an indirect light component, which in FIG. 6 are designated 30.
  • FIG. 6 the beam paths of the light emitted by the lamp via the body 10 are shown. It can be seen in particular that a proportion of light is emitted upwards via the openings 30, while the roof reflector 7 prevents an immediate exit of the light from the body 10 in the direction opposite to the light exit opening 5.
  • the light components which are emitted via the openings 30 are generally not subject to any glare limitation. Therefore, by suitable design of the prisms and / or a suitable choice of the angle ⁇ , the light components which otherwise could lead to glare can be conducted to the openings 30.
  • the region of a light component B or the region of the light component A partially overlaps with the region of the openings 30 or even, in the case of the light components B, coincide therewith.
  • the roof reflector 7 could be omitted to reinforce the indirect light component.
  • the light-directing body which in the embodiment of the FIG. 1 is open on the side facing the reflector, is closed on this side and on the side facing the reflector also has a translucent wall with a refractive structure, for example, a structure of parallel line-shaped prisms extending in the longitudinal direction of the lamp has.
  • the body of the roof reflector 7 may be spaced so that the main light component of the radiated light over the body, which the light portion A in FIG. 3b or 4b corresponds, incident on the reflector 3 or the roof reflector 7.
  • FIG. 7 shows a modification of the embodiment of the FIG. 1 , in the same elements as in the embodiment of FIG. 1 are provided with the same reference numerals.
  • substantially the mirror element 20 is omitted.
  • a plate 40 of a translucent material is placed on the bottom 14, which on its underside, which faces the bottom, line-shaped parallel prisms with a dreiekkigen cross section, with respect to a plane perpendicular to the lamp longitudinal axis, have, similar to the embodiment of the FIG. 1 was provided for the side walls 12.
  • the side walls 12 are as in the embodiment of FIG. 1 with line-shaped prisms provided with the cross-sectional shape of a right triangle.
  • the lines defining the prisms of the plate 40 and the bottom 14 are parallel to each other and to the longitudinal axis of the luminaire.
  • the bottom 14 is provided with line-shaped prisms, which in a cross section perpendicular to the lamp axis have the shape of a triangle with a point angle of 116 °, as shown in FIG. 7 is indicated.
  • Laterally of the element 40 reflector sections 42 may be provided, with which the transition region is covered by the bottom 14 to the side walls 12 and prevents light from leaking uncontrollably in this edge region.
  • the plate 40 produces a concentration of the light portion within a range of ⁇ 45 ° to the median plane S, as shown in FIG Figure 3a and 3b is shown.
  • this is not completely sufficient for glare control with the shielding angle ⁇ of 65 °.
  • the prisms are provided with a point angle of 116 °, which the corresponding light components above the shielding angle ⁇ , which could lead to glare, in particular those lights, which in FIGS. 3b and 4b with B, suppress or divert to smaller angles.
  • the light in the longitudinal and transverse directions but preferably also be blended in several levels.
  • FIG. 8 illustrates an alternative form of the body 10 in which the side walls 12 and their orientation to the median plane S have remained unchanged, while the bottom 50 consists of two obliquely to the median plane portions 52a and 52b, which with the median plane in each case an angle of 70 ° and with the side walls at an angle of 90 °, so that the side walls 12, in turn, still enclose an angle of 20 ° with the median plane.
  • the body 10 can be made in various ways.
  • the basic shape of the body can be manufactured in a known manner, in particular extruded or made by hot deformation of a plate.
  • the prisms can for example be cut or glued.
  • FIG. 9 An advantageous manufacturing method is in FIG. 9 illustrated.
  • this manufacturing method in a flat material, portions 62a and 62b, which are later to correspond to the side walls, and an intermediate portion 64 are set, which should later conform to the ground. Between these sections, a longitudinally extending triangular notch is provided, which however does not separate the parts 62a, 62b and 64, but connects them via a residual thickness of the material, that is, as it were, via a film hinge. Subsequently, the side walls 62a and 62b, as indicated by the arrows in FIG FIG. 9a outlined to the form of FIG. 9b placed, the sides of the original notch are now in the manner of a miter to each other.
  • the notches between the sections 62a, 62b and 64 may be provided on the side on which the refractive structures of the side walls are formed and which in the finished body (see FIG. FIG. 9b ) facing outward.
  • FIG. 10 illustrates another way of making the body.
  • an open-topped trapezoidal profile is produced, for example by extrusion, the profile in the region of the side walls 72 at the top and bottom grooves 74, in which plates or sheets 76, which required for the side walls prism structure, ie the structure with the line-shaped parallel prisms, which have a cross section in the form of a right triangle, inserted, preferably inserted ..
  • the mirror element 20 is shown again. This can be inserted or glued or coextruded and provided after extrusion with a reflective coating or lined with a reflective film.
  • plates, foils or other elements which are reflective or at least partially reflective, in particular specularly reflective may also be asymmetric Light emission characteristic of the lamp to produce or otherwise to change the Lichtabstrahl characterizing
  • FIG. 11 shows another way of assembling the body.
  • the body consists of separate side parts 80 and a separate bottom part 82, wherein the Floor part has a groove 84 for insertion of the side parts 80.
  • a latching connection is provided, which locks the side wall in the groove 84 (see. FIG. 10 , Reference numeral 86).
  • this illustration only schematically indicates a latching connection. In practical applications, for example, a separate detent groove for locking the side walls and locking with a latching tongue will provide.
  • FIG. 12 illustrates another embodiment of a light-guiding body, in which connect to the ground on both sides in each case a plurality of side walls in the manner of a polygonal pull.
  • the bottom 90 for example, as the bottom 14 in the embodiment of the FIG. 1 or 7 may be formed, on both sides in each case first side walls 92, which parallel to the longitudinal direction of the body and to the lamp axis extending line-shaped prisms having a cross-section perpendicular to the longitudinal axis of a triangular cross-section having a point angle of 90 °.
  • FIG. 12 it can be seen that these prisms are directed towards the interior of the body.
  • the sidewalls 92 are adjoined by sidewalls 94, which also have line-shaped prisms running in the longitudinal direction of the body or in the longitudinal direction of the lamp, which have a triangular cross-section, referred to a cross section perpendicular to the longitudinal axis of the body, having a point angle of 90 °.
  • these prisms have, as in FIG. 12 shown, outward. Depending on whether the prisms are directed inwards or outwards, they produce a different light emission characteristic of the light passing through them, which can be advantageously used for the design of the light intensity distribution.
  • FIG. 13 shows a further embodiment of a lamp according to the invention. Same or similar elements as in the embodiment of FIG. 1 are provided with the same reference numerals and will not be explained in detail.
  • the light directing body 100 has two translucent sidewalls 102 which each subtend an obtuse angle with the bottom 104 of the body, which is 117 ° in this specific embodiment.
  • the body 100 is made in one piece with the bottom of the body covered with a reflector 108 which reflects the light from the lamp 1 incident on it back into the body.
  • the reflector 108 is laterally bent over and covers the side walls 102 over a small partial area.
  • the end point of the reflector 108 is designated P 1 .
  • the side walls 102 are provided on their inner side with a refractive structure which consists of elongated, in the direction of the lamp longitudinal axis translation invariant prism elements having a triangular cross section with a point angle of 90 ° in a cross section perpendicular to the lamp longitudinal axis.
  • the reflector 3 is, unlike the embodiment of the Fig. 1 , pulled down beyond the level of the bottom 104, so that the bottom 104 is at a distance from the light exit opening 5.
  • the connecting line between the edge R of the reflector 3 and the point P 1 defines the maximum angle at which light can escape from one of the side walls 102 without being reflected by the reflector 3. In this particular embodiment, this angle is about 68 °.
  • a geometric shielding of the light-directing body 100 is generated by the reflector 3.
  • FIG. 14 the light-directing body 100 is shown enlarged together with the lamp 1, wherein for clarity, the prisms of a side wall 102 are shown larger than on the opposite side wall. In fact, the prisms are the same size on both side walls.
  • a prism of the refractive structure on the inside of the side wall 102 covers only a small angular range of the light directly radiated by the lamp. This angle range is on the right side of the FIG. 14 shown greatly enlarged.
  • a prism element defined by a triangular cross section covers approximately an angular range of 6 °, which range may be larger or smaller in different embodiments.
  • FIG. 15 is the light directing body of a modification of the embodiment of the FIG. 13 as a two-lamp lamp sketched together with the associated lamps.
  • lamps 110a and 110b are arranged symmetrically to the median plane S in the light directing body 100, which may be wider than a single-lamp embodiment, but may also have the same width as a single-lamp embodiment.
  • FIG. 15 For the sake of simplicity, only the light-conducting body 100 together with the lamps 110a and 110b shown.
  • the rest of the design of the lamp, in particular of the reflector 3 and the roof reflector 7, is analogous to the embodiment of FIG. 13 ,
  • FIG. 16 shows in a partial view a further modification of the embodiment of the FIG. 13 as a partially direct and partially indirect luminaire.
  • the roof reflector 120 is provided with an opening 122 through which light of the lamp 1 can emerge directly upwards.
  • the remaining configuration of the luminaire, in particular of the reflector 3, is analogous to the embodiment of FIG FIG. 13 ,
  • the light directing body, indicated generally at 124 is not made in one piece, but has two plates 126, each provided on its inside with prisms with a point angle of 90 °, which form the side walls of the light directing body the floor 128 becomes a simple reflector sheet.
  • the plates 126 and the bottom 128 may be suitably connected to each other, for example by gluing, welding or grouting or by a positive, frictional or non-positive connection.
  • the reflector 3 is shown only on the left side of the figure.
  • the luminaire is analogous to the luminaire according to FIG. 13 formed mirror-inverted to the median plane S, that is, it joins on the right side of the figure to the roof reflector 120, a reflector 3, not shown, which extends to below the bottom 128.
  • an (asymmetrical) luminaire with a configuration as shown in FIG FIG. 16 is shown to be realized within the scope of the invention.
  • this lamp would then be present on both sides of the plane S of the roof reflector 120, while only on one, for example, the left side of the reflector 3 would be present and the corresponding area would remain free on the other side. In this case, the light would be emitted directly via the right side wall 126 and not deflected over a reflector, as on the left side.
  • Such a design may be useful if on the two sides of the plane of symmetry S different lighting tasks are to be realized or even if, for structural reasons, a reflector on the right side of the plane of symmetry S is difficult or impossible to implement.
  • the roof reflector 120 has an opening 122 for the exit of an indirect light component, instead of the opening 122 or in addition to the opening 122, a light exit surface may be provided in the reflector 3 outside the region of the light-guiding body 124, ie in the illustration of figure 16 in the region to the left of the left side wall 126.
  • This light exit surface may be formed, for example, as a perforated sheet metal section or as a further opening in the reflector 3, as has already been explained above.
  • FIG. 17 shows a further embodiment of a lamp according to the invention, wherein again the same or similar elements as in the previous embodiments are denoted by the same reference numerals.
  • FIG. 18 is the light directing body of the embodiment of FIG. 17 shown separately with the lamp.
  • the light-directing body 130 again has two side walls 132, which with the plane of the light exit opening 5 in each case an obtuse angle, measured from the top of the side walls 132, ie counterclockwise in the left half of the illustration and clockwise in the right half of Representation, include.
  • the median plane S close the side walls in this embodiment, as in FIG. 17 each represented at an angle of 30 °.
  • the bottom of the light-directing body in this embodiment has a V-shape with two surfaces 134a and 134b, which enclose an angle of 110 ° to 120 ° to each other and touch each other in the plane of symmetry S.
  • the bottom consists of a support profile 136 and an attached reflector 138 above.
  • the side walls 132 connect directly to the support plate 136 and the reflector 138 and are in this embodiment on the reflector 138.
  • a ballast 140 is attached on the underside of the support profile.
  • the support plate 136 and the ballast 140 are covered by a cover 142 which, in this embodiment, touches the plane defined by the edge of the reflector 3, but can also terminate in front of this plane or beyond that plane out of the light exit opening 5 can extend out.
  • the cover 142 has a concave channel shape and connects with its end respectively to the support profile 136 and the side walls 132.
  • the end point of this cover defines, together with the edge R of the reflector 3, a straight line which encloses an angle of 60 ° to the vertical or to the plane of symmetry S.
  • the cover 142 is formed as a dull or diffuse scattering reflector, for example, with a matt white paint. As a result, on the one hand light, which is directed by the reflector 3 to the cover 142, reflected and on the other hand, scattered light reflected in the room, so that the area of the cover 142 appears brightened.
  • the side walls 132 on the side facing the lamp 1 prism elements which are translationally invariant in the direction of the lamp longitudinal axis and in a cross section perpendicular to the lamp longitudinal axis have a triangular cross section, the apex angle of this cross section is 90 °.
  • FIG. 19 shows a modification of the embodiment of the FIG. 17 in which the cover 150 is not round, but square and adapted to the shape of the ballast.
  • the transition between the cover 150, support section 136, reflector 138 and side wall 132 is designed differently insofar as the side walls 132 stand up on the support section 136, the reflector 138 ends on the side walls 132 and the cover 150 is slightly above the support profile extends out into the region of the side walls 132.
  • a straight line is defined by the free end of the cover 150 and the edge of the reflector 3, which forms an angle of 60 ° with the vertical or the center plane S.
  • the side walls 132 have on the side facing away from the lamp 1, a structure of refractive elements in the form of prisms, which are translationally invariant in the direction of the lamp longitudinal axis and a cross-section perpendicular to the lamp longitudinal axis have a triangular cross-section with a point angle of 90 ° ,
  • the sidewalls 132 are more inclined to the median plane S than in the embodiment of FIG. 17 ; in the specific embodiment, the angle between the side walls 132 and the center plane S is about 60 °.
  • FIG. 20 shows a modification of the embodiment of the FIG. 17 or 18, in which the light-directing body instead of a support profile only a reflective sheet 160 has.
  • the cover 162 is formed of polymethyl methacrylate (PMMA).
  • PMMA polymethyl methacrylate
  • the cover 162 is welded or glued to the side wall 164 at the point P 2 .
  • a ballast 140 is housed in the space enclosed by the sheet 160 and the cover 162 .
  • FIG. 21 shows a further embodiment of a light-guiding body, which is largely the embodiment of the FIG. 20 equivalent.
  • the cover 162 at its end a groove on the bottom of a projection 170 of the side wall 164 rests.
  • This projection 170 has a smaller thickness than the remaining side wall 164 and merges into the actual side wall 164 via two shoulders which are angled at a right angle to the projection 170.
  • At these paragraphs lie on one side of the end of the cover 162 and on the other side of the reflector 160 at.
  • the side wall 164 and the cover 162 may be joined together again by welding or gluing.
  • FIGS. 22a to 22c show various ways of forming the cover 162.
  • the cover 162 consists of an opaque, diffusing plastic, such as PMMA, which is treated accordingly.
  • the cover is made of clear PMMA. On its inside, it is provided with an opaque, reflective layer 172, which can be produced for example by coextrusion, painting, hot stamping or steaming.
  • the cover is made of clear PMMA and has on its inside a structure of grooves or prisms that scatter the light incident on or passing through it.
  • the bottom of the light directing body has an exact V-shape.
  • the reflecting surfaces 134a and 134b could also be curved.
  • the fact that in an advantageous manner the tip of the bottom is in the plane of symmetry S, in which the lamp longitudinal axis is located, and on the other hand, the open side of the V-shaped profile of the bottom of the lamp 1 faces away, is achieved in an advantageous manner that of the lamp is reflected to the floor incident light to the side walls 132 or the roof reflector 7 and is avoided that light is reflected back to the lamp 1.
  • Other, known reflector shapes that avoid back reflection on the lamp 1, instead of the illustrated Reflector shape can be used, in particular reflectors with a Evolenten- or cycloid shape.
  • a luminaire according to the invention can be, in particular, a screen workplace luminaire, a luminaire for lighting industrial areas, production plants, warehouses or halls, in particular industrial halls.
  • Inventive lights can be designed, for example, as recessed lights, surface-mounted lights, pendant lights, floor lamps and wall lights, without thereby the scope of the invention would be defined exhaustively.
  • the side walls may have different refractive structures and / or have different transmission properties.
  • the refractive properties or transmission properties within the side walls are different.
  • one or possibly a plurality of side walls are designed to be reflective, wherein this design can be such that this side wall is completely reflective or that it partially reflects and partially transmits light.
  • a light-directing body respectively surrounding the lamp on the right, left and bottom, that is, having walls extending on different sides of the lamp (e.g., right, left or bottom).
  • the lamp is surrounded only on two sides of the light-directing body, so that, for example, the light-directing body has a first wall, which is located to the left of the lamp, and a bottom, which is located below the lamp while To the right of the lamp and above the lamp no wall is provided.
  • the light-directing body has a first wall, which is located to the left of the lamp, and a bottom, which is located below the lamp while To the right of the lamp and above the lamp no wall is provided.
  • are on all four sides of the lamp ie right, left, up and down, each walls of the light-directing body.

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Claims (31)

  1. Lampe dotée d'une source lumineuse (1) et d'un réflecteur (3) attribué à la source lumineuse avec une ouverture de sortie de lumière (5) pour l'émission d'une fraction de lumière directe de la lampe, la source lumineuse étant entourée au moins sur deux côtés par un dispositif dirigeant la lumière, en particulier un corps (10) guidant la lumière, qui s'étend entre la source lumineuse (1) et le réflecteur (3) et possède un côté qui se situe par rapport à la source lumineuse (1) dans la direction du rayonnement de la fraction de lumière directe, le dispositif étant transparent au moins sur un côté (12 ; 72, 76 ; 80) dirigé vers le réflecteur (3) et présentant sur ce côté transparent une structure réfringente qui influence la trajectoire de faisceau de la lumière arrivant de la source lumineuse (1) sur le réflecteur (3), le dispositif guidant la lumière présentant un fond (14 ; 50 ; 82) situé par rapport à la source lumineuse dans la direction du rayonnement de la fraction de lumière directe et présentant des parois (12 ; 72, 76 ; 80) inclinées par rapport à ce fond, caractérisée en ce que le dispositif guidant la lumière présente un corps (10) qui a en section la forme d'un triangle sectionné sur la pointe, lequel est ouvert sur le côté de base ou sur le côté opposé au côté de base, et/ou caractérisée en ce que, dans une section, la ligne qui relie les deux points d'extrémité du fond (14 ; 50 ; 82), forme avec une tangente à une paroi latérale (12 ; 72, 76 ; 80), qui passe par l'un des points d'extrémité, un angle de 65° à 80°, 140° à 160° ou 110° à 130°.
  2. Lampe selon la revendication 1, caractérisée en ce que la source lumineuse (1) est réceptionnée tout ou au moins partiellement dans le réflecteur (3).
  3. Lampe selon la revendication 1 ou 2, caractérisée en ce que le dispositif guidant la lumière présente deux côtés (12 ; 72, 76 ; 80) se faisant face, qui sont tournés à chaque fois vers le réflecteur (3), les propriétés de transmission de ces côtés étant différentes.
  4. Lampe selon la revendication 3, caractérisée en ce que l'un des deux côtés (12 ; 72, 76 ; 80) est conçu en réfléchissant vers le côté intérieur du dispositif (10).
  5. Lampe selon la revendication 1 ou 2, caractérisée en ce que le dispositif guidant la lumière est symétrique par rapport à un plan en ce qui concerne sa géométrie et/ou en ce qui concerne ses propriétés optiques.
  6. Lampe selon la revendication 5, caractérisée en ce que la source lumineuse est située dans ledit plan.
  7. Lampe selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la structure réfringente limite dans une coupe transversale le rayonnement de lumière sur le côté tourné vers le réflecteur (3) à une plage d'angles au-dessous d'un angle limite β par rapport à une perpendiculaire à la paroi latérale, de telle sorte qu'au moins la partie prépondérante de la lumière émise par ce côté est émise dans la zone au-dessous de cet angle limite.
  8. Lampe selon la revendication 7, caractérisée en ce que, à chaque point de sortie de lumière de la paroi latérale (12 ; 72, 76 ; 80), l'angle β est défini par la structure réfringente de telle sorte que des faisceaux de lumière, qui sortent sous l'angle β de la paroi latérale (12), arrivent sur le réflecteur (3).
  9. Lampe selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la structure réfringente se compose d'éléments linéaires qui ont une section constante dans une coupe transversale perpendiculairement à la ligne que l'élément suit.
  10. Lampe selon la revendication 9, caractérisée en ce que les éléments ont une section se rétrécissant à partir d'un côté de base avec deux côtés qui se raccordent au côté de base, le total des angles, que les tangentes aux deux côtés passant par les points d'extrémité du côté de base forment avec le côté de base, se situant dans une plage de 85° à 130°.
  11. Lampe selon la revendication 10, caractérisée en ce que la section a une forme triangulaire et l'angle opposé au côté de base est de 90°.
  12. Lampe selon l'une quelconque des revendications 1 à 11, caractérisée en ce qu'une structure réfringente est conçue sur un côté d'une paroi du dispositif guidant la lumière qui part de la source lumineuse (1).
  13. Lampe selon l'une quelconque des revendications 1 à 12, caractérisée en ce qu'une structure réfringente est formée sur un côté d'une paroi du dispositif guidant la lumière qui est dirigé vers la source lumineuse (1).
  14. Lampe selon l'une quelconque des revendications 1 à 13, caractérisée par un dispositif qui ne laisse pas passer ou laisse passer seulement partiellement de la lumière qui est émise par la source lumineuse (1) dans la direction de rayonnement de la fraction de lumière directe.
  15. Lampe selon la revendication 14, caractérisée en ce qu'un élément (40) réfléchissant ou partiellement réfléchissant et partiellement transparent est disposé entre le fond et la source de lumière ou est formé par le fond (14 ; 50 ; 82).
  16. Lampe selon la revendication 14 ou 15, caractérisée en ce qu'un élément (40) est disposé entre le fond (14 ; 52 ; 82) et la source lumineuse, lequel présente une structure réfringente qui ne laisse pas passer ou laisse passer seulement partiellement la lumière vers le fond (14 ; 50 ; 82) ou concentre de la lumière qui est passée sur une plage d'angle par rapport à une perpendiculaire à la surface de sortie de lumière.
  17. Lampe selon l'une quelconque des revendications 14 à 16, caractérisée en ce que le fond (14 ; 50 ; 82) est doté d'une structure réfringente qui ne laisse pas passer ou laisse passer seulement partiellement de la lumière ou concentre la surface qui est passée sur une plage d'angle définie par rapport à une perpendiculaire à la surface de sortie de lumière.
  18. Lampe selon l'une quelconque des revendications 1 à 17, caractérisée en ce que le dispositif guidant la lumière comprend un corps (10) guidant la lumière dont le fond (14 ; 50) est conçu d'une seule pièce avec les parois latérales.
  19. Lampe selon la revendication 18, caractérisée en ce que l'arête latérale du fond (14 ; 50) et des parois latérales (12) est dotée à chaque fois d'un chanfrein qui s'étend seulement sur une partie de l'épaisseur, de telle sorte que le fond et les parois latérales sont reliés par un tronçon de matériau.
  20. Lampe selon la revendication 19, caractérisée en ce que les chanfreins s'appliquent les uns sur les autres à la façon d'un onglet.
  21. Lampe selon la revendication 19, caractérisée en ce que les chanfreins sont conçus sur le même côté du corps que les structures réfringentes dans une ou plusieurs parois latérales et/ou dans le fond.
  22. Lampe selon l'une quelconque des revendications 3 à 21, caractérisée en ce qu'une ou plusieurs parois latérales (72) et/ou le fond présentent un dispositif pour le maintien (74) par complémentarité de formes d'un ou plusieurs éléments (76) en forme de plaque ou de film avec une structure réfringente.
  23. Lampe selon l'une quelconque des revendications 1 à 22, caractérisée en ce que la lampe a une caractéristique de rayonnement asymétrique.
  24. Lampe selon l'une quelconque des revendications 1 à 22, caractérisée en ce que la lampe présente une caractéristique de rayonnement symétrique.
  25. Lampe selon l'une quelconque des revendications 1 à 24, caractérisée en ce que le dispositif guidant la lumière présente une partie de fond à laquelle se raccorde un revêtement qui définit une cavité en même temps que la partie de fond.
  26. Lampe selon la revendication 25, caractérisée en ce que la partie du fond est le fond d'un corps guidant la lumière.
  27. Lampe selon la revendication 25 ou 26, caractérisée en ce que des composants de lampe sont disposés dans la cavité.
  28. Lampe selon la revendication 27, caractérisée en ce que la partie de fond présente un profilé de support sur lequel sont fixés un ou plusieurs composants de lampe qui sont réceptionnés dans la cavité.
  29. Lampe selon l'une quelconque des revendications 1 à 28, caractérisée en ce que le réflecteur (3, 12) présente à côté de ladite ouverture de sortie de lumière (5) une surface de sortie de lumière (30 ; 122) pour l'émission d'une fraction de lumière indirecte de la lampe.
  30. Lampe selon la revendication 29, caractérisée en ce que le dispositif guidant la lumière comprend un corps (10) guidant la lumière qui présente deux parois latérales se faisant face et une surface de sortie de lumière (122) est prévue pour une émission de lumière indirecte dans le réflecteur entre les deux parois latérales.
  31. Lampe selon la revendication 29 ou 30, caractérisée en ce que le dispositif guidant la lumière comprend un corps (10) guidant la lumière et une surface de sortie de lumière (30) destinée à une émission de lumière indirecte est située à l'extérieur de la zone entre deux parois latérales se faisant face du corps guidant la lumière.
EP04016373A 2003-07-10 2004-07-12 Lampe d'éclairage intérieur avec un élément réfractif Expired - Lifetime EP1496308B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10331259 2003-07-10
DE10331259 2003-07-10
DE10353644 2003-11-17
DE10353644A DE10353644A1 (de) 2003-07-10 2003-11-17 Leuchte mit einem Entblendungskörper

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EP1496308A2 EP1496308A2 (fr) 2005-01-12
EP1496308A3 EP1496308A3 (fr) 2007-10-24
EP1496308B1 true EP1496308B1 (fr) 2011-08-24

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047689B4 (de) * 2006-04-12 2017-01-26 Siteco Beleuchtungstechnik Gmbh Leuchte und Lichtbandsystem mit transparentem Leuchtenschirm
DE102010001363A1 (de) * 2010-01-29 2011-08-04 Zumtobel Lighting Gmbh Reflektoranordnung
DE102010041478A1 (de) * 2010-09-27 2012-03-29 Zumtobel Lighting Gmbh Anordnung zur gerichteten Lichtabgabe
WO2013068865A1 (fr) * 2011-11-08 2013-05-16 Koninklijke Philips Electronics N.V. Élément optique de mise en forme de la lumière
DE102012209347B4 (de) * 2012-06-04 2014-08-28 Ridi - Leuchten Gmbh Leuchte, insbesondere für ein Lichtband
DE202013101792U1 (de) * 2013-04-25 2014-07-29 Zumtobel Lighting Gmbh Leuchte mit optischem System zur Lichtabgabe über eine längliche Lichtaustrittsöffnung
DE202013103270U1 (de) * 2013-07-22 2014-10-23 Zumtobel Lighting Gmbh Leuchte mit einem gekrümmten Prismenstruktur-Element

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10006410A1 (de) * 2000-02-14 2001-08-16 Zumtobel Staff Gmbh Leuchte
DE8808702U1 (de) * 1988-07-04 1988-09-01 Willing, Achim, Dr.-Ing., 8604 Scheßlitz Leuchte mit langgestreckter Lichtquelle
DE3841518A1 (de) 1988-12-09 1990-06-13 Trilux Lenze Gmbh & Co Kg Spiegelrasterleuchte
DE4125545A1 (de) * 1990-08-16 1992-02-20 Siemens Ag Indirekte spiegelleuchte
DE4039290A1 (de) * 1990-12-08 1992-06-11 Minnesota Mining & Mfg Leuchte
DE4115836C2 (de) * 1991-05-15 1999-11-25 Jordan Reflektoren Gmbh & Co Leuchte mit einer Reflektoranordnung und einem Abblendkörper
DE10216249A1 (de) 2002-04-12 2003-10-23 Zumtobel Staff Gmbh Leuchte mit Diffusor-Korb

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EP1496308A3 (fr) 2007-10-24

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