WO2018117230A1

WO2018117230A1 - Vehicle lamp

Info

Publication number: WO2018117230A1
Application number: PCT/JP2017/045972
Authority: WO
Inventors: 寛秋黒須; 達也関口
Original assignee: スタンレー電気株式会社
Priority date: 2016-12-22
Filing date: 2017-12-21
Publication date: 2018-06-28
Also published as: JP2018106837A

Abstract

Provided is a vehicle lamp which is capable of forming a plurality of types of light distribution patterns. The vehicle lamp is provided with: a first light guide lens which includes a first light entry surface and a first light exit surface; a second light guide lens which is disposed below the first light guide lens, and which includes a second light entry surface and a second light exit surface; a first light source which emits light that forms a luminous intensity distribution on the first light exit surface when exiting from the first light exit surface after entering from the first light entry surface; a second light source which emits light that forms a luminous intensity distribution on the second light exit surface when exiting from the second light exit surface after entering from the second light entry surface; and a projection lens which inverts and projects the luminous intensity distributions formed on the first light exit surface and the second light exit surface in accordance with the lighting state of the first light source and the second light source. The lower edge of the first light exit surface includes a stepped first edge portion. The upper edge of the second light exit surface includes a stepped second edge portion having an inverted shape to that of the first edge portion. The first light guide lens and the second light guide lens are disposed in a state in which the first edge portion and the second edge portion are in line contact with each other.

Description

Vehicle lighting

The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp that can form a plurality of types of light distribution patterns.

Conventionally, a light guide lens including a light entrance surface and a light exit surface, and an LED that emits light that forms a light intensity distribution on the light exit surface when entering the light guide lens from the light entrance surface and exiting the light exit surface Has been proposed (see, for example, Patent Document 1 (FIG. 1)), and a projection lens that forms a low beam light distribution pattern by reversing projection of a luminous intensity distribution formed on a light exit surface. Etc.))).

Japanese Patent Laid-Open No. 2015-79660

However, in the vehicular lamp described in Patent Document 1, although one type of light distribution pattern (low beam distribution pattern) can be formed, a plurality of types of light distribution patterns (for example, low beam distribution patterns and There is a problem that a light distribution pattern for ADB, or a light distribution pattern for low beam and a light distribution pattern for high beam) cannot be formed.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicular lamp capable of forming a plurality of types of light distribution patterns.

In order to achieve the above object, one aspect of the present invention includes a first light guide lens including a first light incident surface and a first light output surface, a second light guide lens disposed below the first light guide lens, and a second light guide lens. A second light guide lens including a light entrance surface and a second light exit surface; and the first light exit when the light enters the first light guide lens from the first light entrance surface and exits from the first light exit surface. A first light source that emits light forming a luminous intensity distribution on the surface, and the second light exit surface when entering the second light guide lens from the second light entrance surface and exiting from the second light exit surface A second light source that emits light forming a light intensity distribution, and a light intensity distribution formed on the first light output surface and the second light output surface according to a lighting state of the first light source and the second light source are inverted and projected. A lower end edge of the first light output surface of the first light guide lens includes a first edge portion with a step, and the second lens. An upper end edge of the second light exit surface of the optical lens includes a stepped second edge portion having a shape in which the first edge portion is inverted, and the first light guide lens and the second light guide lens are formed of the first light guide surface. It is a vehicular lamp that is arranged in a state where the edge portion and the second edge portion are in line contact with each other.

According to this aspect, it is possible to provide a vehicular lamp that can form a plurality of types of light distribution patterns.

This includes a second light guide lens in addition to the first light guide lens, and the projection lens has a first light exit surface and a first light output surface of the first light guide lens according to the lighting state of the first light source and the second light source. This is due to reverse projection of the luminous intensity distribution formed on the second light exit surface of the two light guide lenses.

In the above invention, a preferable aspect is that the projection lens is disposed in front of the first light output surface and the second light output surface, and a rear surface of the projection lens is the first light output surface and the second light output surface. The first light exit surface and the second light exit surface are in surface contact with the rear surface of the projection lens.

Moreover, in the said invention, a preferable aspect is arrange | positioned above the said 1st light source, and light intensity distribution is made into the said 1st light emission surface when it injects into the said 1st light guide lens and exits from the said 1st light emission surface. A third light source that emits light to be formed; and a light intensity distribution on the second light exit surface when the light enters the second light guide lens and exits from the second light exit surface. A fourth light source that emits light forming the first light output according to a lighting state of the first light source, the second light source, the third light source, and the fourth light source. The light intensity distribution formed on the surface and the second light exit surface is reversely projected.

1 is a perspective view of a vehicular lamp 10. FIG. (A) Top view of vehicle lamp 10 (b) Front view (c) Side view It is sectional drawing which cut | disconnected the vehicle lamp 10 shown in FIG. 1 by the horizontal surface (plane containing X-axis and Y-axis) containing the reference axis AX. It is sectional drawing which cut | disconnected the vehicle lamp 10 shown in FIG. 1 by the perpendicular surface (plane containing X-axis and Z-axis) containing the reference axis AX. 1 is an exploded perspective view of a vehicular lamp 10. FIG. 3 is a perspective view of a structure in which a heat sink 20, a light source module 30, a holder 40, and a separator 50 are combined. FIG. 3 is a perspective view of a separator 50. FIG. (A) A partial front view of the upper separator main body 52, (b) a partial front view of the lower separator main body 53, (c) a plurality of low beam light sources 32a and a plurality of high beam light sources 32b seen through the separator 50. It is a front view (perspective view). (A) An example of a light distribution pattern P _Lo for low beam, (b) an example of a light distribution pattern P _ADB for _ADB , (c) a combined light distribution pattern including a light distribution pattern P _Lo for low beam and a light distribution pattern P ADB for _ADB (D) is a diagram illustrating a state in which a plurality of regions (for example, a plurality of regions A1 to A4 that are individually turned on and off) are circular and overlap each other, which constitute the light distribution pattern for ADB. It is a partial front view (perspective view) of the vehicular lamp 10 (modification). It is a partial sectional view of vehicular lamp 10 (modification).

Hereinafter, a vehicular lamp 10 according to an embodiment of the present invention will be described with reference to the accompanying drawings. In each figure, corresponding components are denoted by the same reference numerals, and redundant description is omitted.

FIG. 1 is a perspective view of a vehicular lamp 10. 2A is a top view of the vehicular lamp 10, FIG. 2B is a front view, and FIG. 2C is a side view.

The vehicle lamp 10 shown in FIGS. 1 and 2 includes a low beam light distribution pattern P _Lo (see FIG. 9A), or a low beam light distribution pattern P _Lo and an ADB (Adaptive Driving Beam) light distribution pattern P. A vehicle headlamp capable of forming a combined light distribution pattern including _ADB (see FIG. 9C), and is mounted on the left and right sides of the front end of a vehicle (not shown). The low beam light distribution pattern P _Lo and the ADB light distribution pattern P _ADB are formed on a virtual vertical screen (disposed approximately 25 m ahead from the front of the vehicle) facing the front of the vehicle. Hereinafter, for convenience of explanation, XYZ axes are defined. The X-axis extends in the vehicle front-rear direction, the Y-axis extends in the vehicle width direction, and the Z-axis extends in the vertical direction.

FIG. 3 is a cross-sectional view of the vehicular lamp 10 shown in FIG. 1 cut along a horizontal plane including the reference axis AX (a plane including the X axis and the Y axis). FIG. 4 is a cross-sectional view of the vehicular lamp 10 shown in FIG. 1 cut along a vertical plane including the reference axis AX (a plane including the X axis and the Z axis). FIG. 5 is an exploded perspective view of the vehicular lamp 10.

As shown in FIG. 3 to FIG. 5, the vehicular lamp 10 of this embodiment includes a heat sink 20, a light source module 30, a holder 40, a separator 50, a primary lens 60, a retainer 70, a secondary lens 80, and the like. Although not shown, the vehicular lamp 10 is disposed in a lamp chamber composed of an outer lens and a housing, and is attached to the housing or the like.

As shown in FIG. 5, the heat sink 20 is made of aluminum die cast and includes a base 22 including a front surface 22a and a rear surface 22b opposite to the front surface 22a.

The front surface 22a includes a light source module mounting surface 22a1 and a peripheral surface 22a2 surrounding the light source module mounting surface 22a1.

The light source module mounting surface 22a1 and the peripheral surface 22a2 are, for example, planes parallel to a plane including the Y axis and the Z axis.

The light source module mounting surface 22a1 is provided with screw holes 22a5 (three places in FIG. 5) for fixing the light source module 30 with screws. The light source module mounting surface 22a1 is provided with positioning pins 22a6 (two locations in FIG. 5) for positioning the light source module 30.

The peripheral surface 22a2 includes a holder contact surface 22a3 with which the holder 40 contacts and a retainer contact surface 22a4 with which the retainer 70 contacts.

The retainer contact surface 22a4 is provided on each of the left and right sides of the peripheral surface 22a2.

The thickness between the retainer contact surface 22a4 and the rear surface 22b (thickness in the X-axis direction) is thicker than the thickness between the holder contact surface 22a3 and the rear surface 22b (thickness in the X-axis direction), thereby forming a step portion. ing.

The base 22 is provided with screw holes 22c (two places in FIG. 3) into which the screws N1 are inserted. The screw hole 22c passes through the retainer contact surface 22a4 and the rear surface 22b.

The left and right sides of the base 22 are respectively provided with first extension portions 24 extending rearward (X-axis direction) from the left and right sides of the base 22. A distal end portion of the first extension portion 24 is provided with a second extension portion 26 extending toward the side (Y-axis direction).

The heat radiating fins 28 are provided on the rear surface 22b of the base 22.

The light source module 30 includes a plurality of low beam light sources 32a and a plurality of ADB light sources 32b, a plurality of low beam light sources 32a, a plurality of ADB light sources 32b, and a substrate 34 on which a connector 34c is mounted. . The plurality of light sources 32a correspond to the first light source of the present invention, and the plurality of light sources 32b correspond to the second light source of the present invention.

FIG. 8C is a front view (perspective view) of the plurality of low beam light sources 32a and the plurality of light sources 32b for ADB as seen through the separator 50. FIG.

As shown in FIG. 8C, the plurality of low beam light sources 32a are mounted on the substrate 34 in a form arranged in the upper stage and in the Y-axis direction. A plurality of light sources 32b for ADB are mounted on the substrate 34 in a form arranged in the lower stage and in the Y-axis direction.

Each of the

light sources

32a and 32b is, for example, a semiconductor light emitting element such as an LED or an LD having a rectangular (for example, 1 mm square) light emitting surface, and the substrate 34 with each light emitting surface facing forward (front). To be implemented. The plurality of rectangles in FIG. 8C represent the light emitting surfaces of the

respective light sources

32a and 32b.

The substrate 34 is provided with through holes 34a (two locations in FIG. 5) into which the positioning pins 22a6 of the heat sink 20 are inserted, and notches S1 (three locations in FIG. 5) into which the screws N2 are inserted.

In the light source module 30 having the above-described configuration, the screw N2 inserted into the notch S1 is screwed into the screw hole 22a5 of the heat sink 20 with the positioning pin 22a6 of the heat sink 20 inserted into the through hole 34a of the substrate 34. It is fixed to the heat sink 20 (light source module mounting surface 22a1).

As shown in FIGS. 3 to 5, the holder 40 is made of a synthetic resin such as acrylic or polycarbonate, and includes a cup-shaped holder main body 42 opened on the front side and closed on the rear side.

The front surface 42a of the holder main body 42 is a surface (rear side) in which the rear surface of the separator 50 is inverted so that the rear surfaces of the separator 50 (the rear surface 52b of the upper separator main body 52 and the rear surface 53b of the lower separator main body 53) are in surface contact. Concave spherical surface).

The holder body 42 is provided with a through hole 42c into which the light guide part 52d and the light guide part 53d of the separator 50 are inserted.

The holder body 42 is provided with a cylindrical portion 44 that extends rearward (X-axis direction) from the outer peripheral portion of the holder body 42. A flange portion 46 that abuts against the holder abutment surface 22 a 3 of the heat sink 20 is provided at the tip of the cylindrical portion 44.

The holder main body 42 (and the cylindrical portion 44) is provided with a notch S4.

A convex portion 48 and a convex portion 49 are provided on the front opening end surface 40 a of the holder 40.

FIG. 6 is a perspective view of a structure in which the heat sink 20, the light source module 30, the holder 40, and the separator 50 are combined.

FIG. 7 is a perspective view of the separator 50.

As shown in FIG. 7, the separator 50 is a cup-shaped member that is made of silicon resin, opened on the front side, and closed on the rear side. The separator 50 includes an upper separator body 52 and a lower separator body 53. The upper separator body 52 corresponds to the first light guide lens of the present invention, and the lower separator body 53 corresponds to the second light guide lens of the present invention.

As shown in FIG. 4, the upper separator body 52 is disposed above the reference axis AX, and the lower separator body 53 is disposed below the reference axis AX. The reference axis AX extends in the X axis direction.

A front surface 52a of the upper separator main body 52 has an upper half of the rear surface 60b of the primary lens 60 so that the upper half of the rear surface 60b (spherical surface convex toward the rear) of the reference axis AX is in surface contact. It is configured as a surface having an inverted shape (a spherical surface concave toward the rear).

The rear surface 52b (see FIGS. 3 and 4) of the upper separator main body 52 is in surface contact with the upper half of the reference axis AX of the front surface 42a (spherical surface concave toward the front) of the holder 40 (holder main body 42). The upper half of the front surface 42a of the holder 40 (holder body 42) is configured as an inverted surface (spherical surface convex toward the rear).

As shown in FIG. 8A, the lower edge of the front surface 52a of the upper separator body 52 has stepped edge portions 52a1 having a shape corresponding to the cut-off line CL _Lo (CL1 to CL3; see FIG. 11A), and The extended edge portions 52a2 and 52a3 are disposed on both sides of the stepped edge portion 52a1. The stepped edge portion 52a1 corresponds to the first edge portion of the present invention. The extended edge portion may be provided only on one side.

The stepped edge 52a1 includes an edge e1 corresponding to the left horizontal cutoff line CL1, an edge e2 corresponding to the right horizontal cutoff line CL2, and an oblique cutoff line CL3 connecting the left horizontal cutoff line CL1 and the right horizontal cutoff line CL2. Side e3 corresponding to.

The extended edge portion 52a2 is disposed at the same position as the side e1 in the Z-axis direction. The extended edge portion 52a3 is disposed at the same position as the side e2 in the Z-axis direction.

The lower end surface 52c (see FIG. 4) of the upper separator body 52 is a surface extending in the horizontal direction (X-axis direction) from the lower end edge of the front surface 52a of the upper separator body 52 toward the rear surface 52b of the upper separator body 52.

As shown in FIGS. 3 and 4, the rear surface 52b of the upper separator body 52 is provided with a light guide 52d for guiding light from the light source module 30 (the plurality of light sources 32a). 52 d of light guide parts are provided in the partial area | region including the edge part 52a1 with a level | step difference among the rear surfaces 52b of the upper separator main body 52, and are extended toward the light source module 30 (the some light source 32a). Yes. The partial region including the stepped edge portion 52a1 is a region of the rear surface 52b of the upper separator body 52 that is opposed to the light source module 30 (light emitting surfaces of the plurality of light sources 32a). The light guide part 52 d is inserted into the through hole 42 c of the holder 40.

A light incident surface 52e is provided at the tip of the light guide 52d. The light incident surface 52e is, for example, a plane parallel to a plane including the Y axis and the Z axis. The light incident surface 52e corresponds to the first light incident surface of the present invention, and the front surface 52a corresponds to the first light output surface of the present invention.

The light incident surface 52e is disposed at a position facing the light source module 30 (the light emitting surfaces of the plurality of light sources 32a) in a state where the light guide 52d is inserted into the through hole 42c of the holder 40 (see FIG. 4). The distance between the light incident surface 52e and the light source module 30 (light emitting surfaces of the plurality of light sources 32a) is, for example, 0.2 mm.

As shown in FIGS. 5 and 7, a flange portion 52 f is provided on the front opening end surface of the upper separator body 52. In the flange portion 52f, a through hole 52f1 (one place in FIGS. 5 and 7) into which the convex portion 48 of the holder 40 is inserted, and a through hole 52f2 (in FIGS. 5 and 7) into which the convex portion 49 of the holder 40 is inserted. Medium, 2 places) are provided.

The front surface 53a of the lower separator main body 53 has the lower half of the rear surface 60b of the primary lens 60 so that the lower half of the rear surface 60b (spherical surface convex toward the rear) of the primary lens 60 is in surface contact with the reference axis AX. It is configured as a surface having an inverted shape (a spherical surface concave toward the rear).

The rear surface 53b (see FIGS. 3 and 4) of the lower separator body 53 is in surface contact with the lower half of the reference axis AX of the front surface 42a (spherical surface concave toward the front) of the holder 40 (holder body 42). The lower half of the front surface 42a of the holder 40 (holder body 42) is configured as a reverse surface (spherical surface convex toward the rear).

As shown in FIG. 8B, the upper edge of the front surface 53a of the lower separator body 53 has a stepped edge portion 53a1 (sides e1 ′ to e3 ′) having a shape obtained by inverting the stepped edge portion 52a1, and a stepped portion. Extension edge parts 53a2 and 53a3 arranged on both sides of the edge part 53a1 are included. The stepped edge portion 53a1 corresponds to the second edge portion of the present invention. The extended edge portion may be provided only on one side.

The extended edge portion 53a2 is arranged at the same position as the side e1 ′ in the Z-axis direction. The extended edge portion 53a3 is disposed at the same position as the side e2 'in the Z-axis direction.

The upper end surface 53c (see FIG. 4) of the lower separator body 53 is a surface extending in the horizontal direction (X-axis direction) from the upper end edge of the front surface 53a of the lower separator body 53 toward the rear surface 53b of the lower separator body 53.

3 and 4, the rear surface 53b of the lower separator body 53 is provided with a light guide portion 53d for guiding light from the light source module 30 (the plurality of light sources 32b). The light guide portion 53d is provided in a partial region including a stepped edge portion 53a1 on the rear surface 53b of the lower separator main body 53, and extends toward the light source module 30 (the plurality of light sources 32b). Yes. The partial region including the stepped edge portion 53a1 is a region of the rear surface 53b of the lower separator body 53 that faces the light source module 30 (light emitting surfaces of the plurality of light sources 32b). The light guide portion 53d is inserted into the through hole 42c of the holder 40.

A light incident surface 53e is provided at the tip of the light guide 53d. On the light incident surface 53e, a plurality of areas constituting the ADB light distribution pattern (for example, a plurality of areas A1 to A4 that are individually turned on and off) are circular and overlap each other as shown in FIG. This is a surface adjusted so as to be formed in a state of being divided by vertical edges as shown in FIG. FIGS. 9B and 9D show ADB light distribution patterns formed when there are four ADB light sources 32b. A hatched area in FIGS. 9B and 9D indicates that the light source 32b corresponding to the area is turned off. The light incident surface 53e corresponds to the second light incident surface of the present invention, and the front surface 53a corresponds to the second light output surface of the present invention.

The light incident surface 53e is disposed at a position facing the light source module 30 (the light emitting surfaces of the plurality of light sources 32b) in a state where the light guide portion 53d is inserted into the through hole 42c of the holder 40 (see FIG. 4). The distance between the light incident surface 53e and the light source module 30 (the light emitting surfaces of the plurality of light sources 32b) is, for example, 0.2 mm.

As shown in FIGS. 5 and 7, a flange 53 f is provided on the front opening end surface of the lower separator body 53. The flange portion 53f is provided with through holes 53f1 (two locations in FIGS. 5 and 7) into which the convex portion 48 of the holder 40 is inserted.

The lower separator body 53 is provided with a notch S5 so that the connector 34c of the light source module 30 does not contact (interference) with the lower separator body 53.

As shown in FIG. 8C, the upper separator body 52 and the lower separator body 53 are in line contact with the lower edge of the front surface 52a of the upper separator body 52 and the upper edge of the front surface 53a of the lower separator body 53, and The lower end surface 52c of the upper separator body 52 and the upper end surface 53c of the lower separator body 53 are combined in a surface contact state to constitute the separator 50.

In the separator 50 configured as described above, the light guide portion 52d of the upper separator body 52 and the light guide portion 53d of the lower separator body 53 are inserted (for example, press-fitted or fitted) into the through hole 42c of the holder 40, and the upper separator body 52 ( The light incident surface 52e of the light guide 52d and the light source module 30 (light emitting surfaces of the plurality of light sources 32a) face each other, and the light incident surface 53e of the lower separator body 53 (light guide 53d) and the light source module 30 (the plurality of light sources 30). And the rear surface of the separator 50 (the rear surface 52b of the upper separator body 52 and the rear surface 53b of the lower separator body 53) are opposed to the holder 40 (holder body 42). It arrange | positions in the state which carried out surface contact (refer FIG.3 and FIG.4) to the front surface 42a.

At that time, the convex portion 48 of the holder 40 is inserted into the through hole 52f1 of the upper separator body 52 and the through hole 53f1 of the lower separator body 53 (see FIG. 6). Further, the convex portion 49 of the holder 40 is inserted into the through hole 52f2 of the upper separator body 52 (see FIG. 6).

As shown in FIG. 5, the primary lens 60 is a spherical lens including a front surface 60a and a rear surface 60b on the opposite side. The front surface 60a is a spherical surface convex toward the front, and the rear surface 60b is a spherical surface convex toward the rear. The primary lens 60 is provided with a flange portion 62. The flange portion 62 extends so as to surround the reference axis AX between the front surface 60a and the rear surface 60b.

As shown in FIG. 5, the retainer 70 is made of a synthetic resin such as acrylic or polycarbonate, and includes a retainer main body 72 that is a cylindrical body that widens in a cone shape from the front opening end face toward the rear opening end face.

As shown in FIG. 5, the secondary lens 80 is made of a synthetic resin such as acrylic or polycarbonate and includes a lens body 82.

The lens body 82 includes a front surface 82a and a rear surface 82b opposite to the front surface 82a (see FIGS. 3 and 4). The front surface 82a is a plane parallel to the plane including the Y-axis and the Z-axis, and the rear surface 82b is a spherical surface convex toward the rear.

A cylindrical portion 84 that extends rearward (X-axis direction) from the outer peripheral portion of the lens main body 82 is provided on the outer peripheral portion of the lens main body 82.

In the primary lens 60 and the secondary lens 80, the focal point F (see FIG. 8C) has a lower end edge (stepped edge portion 52a1) of the front surface 52a of the upper separator body 52 and an upper end edge (step difference) of the front surface 53a of the lower separator body 53. The projection lens located in the vicinity of the attached edge portion 53a1) is configured. The curvature of field (rear focal plane) of the projection lens is applied to the lower edge (stepped edge portion 52a1) of the front surface 52a of the upper separator body 52 and the upper edge (stepped edge portion 53a1) of the front surface 53a of the lower separator body 53. It is almost coincident.

As the primary lens 60 and the secondary lens 80 constituting the projection lens, for example, a spherical lens and a plano-convex lens described in JP-A-2015-79660 can be used.

The secondary lens 80 having the above-described configuration is disposed in a state where the lens body 82 is disposed in front of the primary lens 60 and the pressing portion and screw receiving portion 86 is in contact with the flange portion 76 of the retainer 70 (see FIG. 3 and FIG. 3). (See FIG. 4).

In the vehicular lamp 10 having the above-described configuration, when the plurality of low beam light sources 32a are turned on, the light from the plurality of low beam light sources 32a enters the light incident surface 52e of the light guide portion 52d of the upper separator body 52. The light is guided through the light guide 52d and emitted from the front surface 52a of the upper separator body 52. Thereby, a light intensity distribution corresponding to the low beam light distribution pattern is formed on the front surface 52a of the upper separator body 52. This luminous intensity distribution includes sides e1 to e3 (see FIG. 8A) corresponding to the cut-off line CL _Lo (CL1 to CL3). The projection lens composed of the primary lens 60 and the secondary lens 80 reversely projects this luminous intensity distribution forward. As a result, as shown in FIG. 9A, the low beam light distribution pattern P _Lo including the cut-off line CL (CL1 to CL3) is formed at the upper edge.

When the plurality of light sources 32b for ADB are turned on, light from the plurality of light sources 32b for ADB enters from the light incident surface 53e of the light guide portion 53d of the lower separator body 53 and is guided in the light guide portion 53d. The light is emitted from the front surface 53 a of the lower separator body 53. As a result, a light intensity distribution corresponding to the ADB light distribution pattern is formed on the front surface 53 a of the lower separator body 53. This luminous intensity distribution includes sides e1 ′ to e3 ′ (see FIG. 8B) corresponding to the cut-off line CL _ADB (CL1 ′ to CL3 ′). The projection lens composed of the primary lens 60 and the secondary lens 80 reversely projects this luminous intensity distribution forward. Thus, as shown in FIG. 9 (b), the light distribution pattern _{P ADB} for ADB comprising a cut-off line _CL ADB to the lower edge (CL1' ~ CL3') is formed. FIG. 9B shows an ADB light distribution pattern PADB formed when there are four light sources 32b for _ADB . A hatched area in FIG. 9B indicates that the light source 32b corresponding to the area is turned off.

When the plurality of low beam light sources 32a and the plurality of ADB light sources 32b are turned on, as shown in FIG. 9C, the combined light distribution pattern including the low beam light distribution pattern _PLo and the ADB light distribution pattern _PADB. Is formed.

As described above, the luminous intensity distributions formed on the front surface 52a of the upper separator body 52 and the front surface 53a of the lower separator body 53 according to the lighting states of the plurality of light sources 32a and the plurality of light sources 32b are inverted and projected. A light distribution pattern is formed.

As described above, according to the present embodiment, the vehicular lamp 10 capable of forming a plurality of types of light distribution patterns can be provided.

This includes a lower separator body 53 in addition to the upper separator body 52, and the projection lens (projection lens constituted by the primary lens 60 and the secondary lens 80) is turned on according to the lighting state of the light source 32a and the light source 32b. This is because the luminous intensity distribution formed on the front surface 52a of the separator body 52 and the front surface 53a of the lower separator body 53 is reversely projected.

Next, a modified example will be described.

FIG. 10 is a partial front view (perspective view) of the vehicular lamp 10 (modified example), and FIG. 11 is a partial cross-sectional view of the vehicular lamp 10 (modified example).

In the above embodiment, the vehicular lamp 10 using two types of light sources, that is, a plurality of light sources 32a for low beams and a plurality of light sources 32b for ADB has been described, but the present invention is not limited thereto. For example, as shown in FIGS. 10 and 11,

light sources

32c and 32d for DRL (Daytime Running Lamp) may be added.

The light source 32c for DRL is mounted on the substrate 34 in a form disposed above the plurality of first light sources 32a for low beam (see FIG. 10). The light source 32d for DRL is mounted on the substrate 34 in a form arranged below the plurality of second light sources 32b for ADB (see FIG. 10).

The upper separator body 52 includes a light guide 52g that guides light from the light source 32c for DRL (see FIG. 11). The light guide 52g is configured in the same manner as the light guide 52d that guides light from the plurality of first light sources 32a for low beam.

The lower separator 53 main body includes a light guide portion 53g that guides light from the light source 32d for DRL (see FIG. 11). The light guide 53g is configured in the same manner as the light guide 52d that guides light from the plurality of first light sources 32a for low beam.

In addition, each

light guide part

52g and 53g (for example, light-

incidence surface

52h, 53h) is comprised so that the light distribution pattern for DRL (not shown) which is a diffused light distribution pattern may be formed.

In the vehicular lamp 10 of the present modification, when the DRL light source 32c is turned on, the light from the DRL light source 32c is incident on the light incident surface 52h of the light guide portion 52g of the upper separator body 52 and guided. The light is guided through the light portion 52 g and emitted from the front surface 52 a of the upper separator body 52. Thereby, a light intensity distribution corresponding to a part of the DRL light distribution pattern is formed on the front surface 52a of the upper separator body 52. Similarly, when the light source 32d for DRL is turned on, the light from the light source 32d for DRL enters the light entrance surface 53h of the light guide portion 53g of the lower separator body 53 and is guided through the light guide portion 53g. The light is emitted from the front surface 53 a of the lower separator body 53. Thereby, a luminous intensity distribution corresponding to another part of the DRL light distribution pattern is formed on the front surface 53a of the lower separator body 53. The projection lens composed of the primary lens 60 and the secondary lens 80 reversely projects this luminous intensity distribution forward. Thereby, a DRL light distribution pattern (not shown) is formed.

In the above embodiment, the example in which the holder 40 and the separator 50 are physically separate parts has been described, but the present invention is not limited to this. For example, the holder 40 and the separator 50 may be integrally formed as an integral part.

Moreover, although the said embodiment demonstrated the example comprised so that the lower separator main body 53 might form the light distribution pattern PADB for _ADB , it is not restricted to this. For example, the lower separator body 53 may be configured to form a high beam light distribution pattern.

Moreover, although the said embodiment demonstrated the case where there exist multiple

light sources

32a and 32b, it is not restricted to this. There may be one

light source

32a, 32b.

In the above embodiment, the primary lens 60 and the secondary lens 80 serve as projection lenses that reversely project the luminous intensity distribution formed on the front surface of the separator 50 (the front surface 52a of the upper separator body 52 and the front surface 53a of the lower separator body 53). Although the example using the comprised projection lens was demonstrated, it is not restricted to this. For example, one lens may be used as the projection lens, or three or more lenses may be used.

In the above-described embodiment, the projection lens (primary lens) that reversely projects forward the luminous intensity distribution formed on the front surface of the separator 50 (the front surface 52a of the upper separator body 52 and the front surface 53a of the lower separator body 53) and the front surface of the separator 50. Although an example in which the lens 60 and the projection lens configured by the secondary lens 80 are in surface contact (see FIGS. 3 and 4) has been described, the present invention is not limited thereto. That is, the projection lens may be any lens that can reversely project the luminous intensity distribution formed on the front surface of the separator 50 (the front surface 52a of the upper separator body 52 and the front surface 53a of the lower separator body 53). The front surface of the lens and the projection lens may be non-contact. That is, a gap may be provided between the front surface of the separator 50 and the projection lens.

The numerical values shown in the above embodiments are all examples, and it is of course possible to use appropriate numerical values different from these.

The above embodiments are merely examples in all respects. The present invention is not construed as being limited by the description of the above embodiments. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

DESCRIPTION OF SYMBOLS 10 ... Vehicle lamp, 20 ... Heat sink, 22 ... Base, 22a ... Front surface, 22a1 ... Light source module mounting surface, 22a2 ... Peripheral surface, 22a3 ... Holder contact surface, 22a4 ... Retainer contact surface, 22a5 ... Screw hole, 22a6 ... Positioning pin, 22b ... Rear surface, 22c ... Screw hole, 24 ... First extension, 26 ... Second extension, 28 ... Radiation fin, 30 ... Light source module, 32a ... First light source, 32b ... Second light source, 32c , 32d ... DRL light source, 34 ... substrate, 34a ... through hole, 34c ... connector, 40 ... holder, 40a ... front side open end face, 42 ... holder body, 42a ... front face, 42c ... through hole, 44 ... cylindrical shape 46, flange portion, 48 ... convex portion, 49 ... convex portion, 50 ... separator, 52 ... upper separator body, 52a ... front surface, 52a1 ... edge portion with step, 52a2 ... extended Edge portion, 52a3 ... extended edge portion, 52b ... rear surface, 52c ... lower end surface, 52d ... light guide portion, 52e ... light incident surface, 52f ... flange portion, 52f1 ... through hole, 52f2 ... through hole, 52g ... light guide portion , 52h ... light entrance surface, 53 ... lower separator body, 53a ... front surface, 53a1 ... edge portion with step, 53a2 ... extension edge portion, 53a3 ... extension edge portion, 53b ... rear surface, 53c ... upper end surface, 53d ... light guide portion 53e: Light incident surface, 53f: Flange portion, 53f1: Through hole, 53g: Light guide portion, 53h ... Light incident surface, 60 ... Primary lens, 60a ... Front surface, 60b ... Rear surface, 62 ... Flange portion, 70 ... Retainer 72 ... Retainer main body, 76 ... Flange portion, 80 ... Secondary lens, 82 ... Lens main body, 82a ... Front surface, 82b ... Rear surface, 84 ... Cylindrical portion, 86 ... Presser and screw receiving portion 88 ... positioning pins, AX ... reference axis, CL ... cutoff, CL1 ... left horizontal cut-off line, CL2 ... right horizontal cut-off line, CL3 ... cutoff line, CL _{ADB ...} cutoff line, CL _{Lo ...} cutoff line, F ... focus, N1, N2 ... Screws, _PADB ... ADB light distribution pattern, _PLo ... Low beam light distribution pattern

Claims

A first light guide lens including a first light entrance surface and a first light exit surface;
A second light guide lens disposed below the first light guide lens and including a second light entrance surface and a second light exit surface;
A first light source that emits light that forms a light intensity distribution on the first light exit surface when entering the first light guide lens from the first light entrance surface and exiting from the first light exit surface;
A second light source that emits light that forms a light intensity distribution on the second light exit surface when entering the second light guide lens from the second light entrance surface and exiting from the second light exit surface;
A projection lens that reversely projects a light intensity distribution formed on the first light exit surface and the second light exit surface according to the lighting state of the first light source and the second light source,
The lower edge of the first light exit surface of the first light guide lens includes a first edge portion with a step,
The upper edge of the second light exit surface of the second light guide lens includes a stepped second edge portion having a shape in which the first edge portion is inverted,
The first light guide lens and the second light guide lens are vehicle lamps arranged in a state where the first edge portion and the second edge portion are in line contact with each other.
The projection lens is disposed in front of the first light exit surface and the second light exit surface,
The rear surface of the projection lens is a spherical surface convex toward the first light exit surface and the second light exit surface,
The vehicular lamp according to claim 1, wherein the first light exit surface and the second light exit surface are in surface contact with a rear surface of the projection lens.
A third light source that is disposed above the first light source and emits light that forms a light intensity distribution on the first light exit surface when entering the first light guide lens and exiting from the first light exit surface; ,
A fourth light source that is disposed below the second light source, and emits light that forms a light intensity distribution on the second light exit surface when entering the second light guide lens and exiting the second light exit surface; Further comprising
The projection lens reversely projects a light intensity distribution formed on the first light exit surface and the second light exit surface according to the lighting state of the first light source, the second light source, the third light source, and the fourth light source. The vehicular lamp according to claim 1 or 2.