JP5910938B2 - Vehicle lamp unit - Google Patents

Description

  The present invention relates to a vehicular lamp unit, and more particularly, to a vehicular lamp unit using a common bracket.

  Conventionally, in the field of vehicle lamps, as shown in FIG. 9, light sources 230 using lenses 222, 224, 226, 228, and semiconductor light emitting elements in regions 212, 214, 216, 218 on the front surface of the common bracket 210. , 230, 230, 230 is proposed, a vehicle headlamp 200 including a plurality of optical units U1, U2, U3, U4 (see, for example, Patent Document 1).

  In the vehicle headlamp 200 having the above-described configuration, the relative positional relationship between the individual lenses 222 to 228 and the individual light sources 230 is important in order to achieve the required light distribution performance. After forming the die (for example, after die casting), the common bracket 210 (region 212 to 218 etc.) is subjected to additional processing such as cutting using an NC-controlled cutting tool or the like. It is necessary to secure the mounting accuracy of the individual lenses 222 to 228 and the individual light sources 230 with respect to 212 to 218).

JP 2010-170753 A

  However, in the vehicle headlamp 200 configured as described above, the angles of the front surfaces 212 to 218 of the common bracket 210 are different (for example, the mounting angles of the individual lenses 222 to 228 and the individual light sources 230 are different from each other). Etc.), the common bracket 210 (regions 212 to 218, etc.) must be subjected to additional processing such as cutting with high precision from the direction corresponding to the angle, and the cost increases accordingly. is there.

  The present invention has been made in view of such circumstances, and without performing additional processing such as complicated cutting processing on the common bracket (thus reducing the cost), the individual light sources and the individual optics. It is an object of the present invention to provide a vehicular lamp unit capable of securing the mounting accuracy of members.

In order to achieve the above object, the invention described in claim 1 includes a common bracket, a light source using a semiconductor light emitting element, an optical member for controlling light emitted from the light source, and a positioning member. At least two optical units, and the positioning member of one of the optical units is abutted against a part of the common bracket and positioned with respect to the common bracket, The light source and the optical member of one optical unit are fixed to the common bracket with the positioning member positioned by being abutted against a part of the common bracket, and the other of the optical units. The positioning member of the optical unit is abutted against a part of the positioning member fixed to the common bracket, and The light source and the optical member of the other optical unit are positioned with respect to the bracket, and the positioning member positioned against the part of the positioning member fixed to the common bracket is interposed between the positioning member and the optical member. The common bracket has heat radiation fins formed on the back surface of the surface with which the positioning member contacts, and the light source and the optical member of the one optical unit and the other of the common bracket are fixed to the common bracket. The light source and the optical member of the optical unit are arranged in different directions in the horizontal direction, and the common bracket is divided into at least a first region and a second region by an edge in the horizontal direction, The first region is configured by a vertical plane orthogonal to the optical axis extending in the vehicle front-rear direction, and the second region is on the optical axis. Characterized in that it consists of a vertical plane perpendicular to the predetermined horizontal angle inclined optical axis and.

  According to the first aspect of the present invention, since the light source and the optical member are fixed to the common bracket with the positioning member interposed therebetween, the relative positional relationship between the light source and the optical member is The positioning member is used as a reference. Therefore, according to the first aspect of the present invention, the mounting accuracy of the individual light sources and the individual optical members can be reduced without subjecting the common bracket to additional processing such as complicated cutting (thus reducing the cost). Can be secured.

Further, according to the first aspect of the present invention, one positioning member is abutted against a part of the common bracket and positioned with respect to the common bracket, and the other positioning member of the one positioning member is positioned. Positioning of the other positioning member because it is configured to be abutted against a part and positioned with respect to the common bracket (that is, to be configured to position the other positioning member using a part of one positioning member) It is not necessary to provide the common bracket with a portion against which the member is abutted, and accordingly, the common bracket can be configured simply and inexpensively.
According to the invention of claim 1, the light source and the optical member of the one optical unit and the light source and the optical member of the other optical unit are arranged in different directions. And
Therefore, by arranging the light source and optical member of one optical unit and the light source and optical member of the other optical unit in different directions in the horizontal direction, it is possible to form a wide synthetic light distribution pattern in the horizontal direction. It becomes.

According to a second aspect of the present invention, in the first aspect of the invention, the positioning member of the one optical unit and the positioning member of the other optical unit have a common shape.

According to the second aspect of the present invention, since the configuration uses a common-shaped positioning member, the cost can be reduced compared to the case where a different-shaped positioning member is used (a common-shaped positioning member is used). Cost reduction by creating many).

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the positioning member of the one optical unit and the positioning member of the other optical unit are made of a material having thermal conductivity. It is characterized by.

According to the third aspect of the present invention, since the heat dissipation performance of the light source is improved, the light emission efficiency of the light source can be improved.

The invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein the common bracket is made of a material having thermal conductivity.

According to the fourth aspect of the invention, since the heat dissipation performance of the light source is improved, the light emission efficiency of the light source can be improved.

The invention according to claim 5 is the invention according to any one of claims 1 to 4 , wherein the first region is formed closer to the center of the vehicle than the second region. .

According to the invention described in claim 6 , in the invention described in any one of claims 1 to 5, the radiation fin includes at least a first radiation fin and a second radiation fin, and the first The radiating fin is extended in a vertical direction with respect to the plane of the first region, and the second radiating fin is extended in parallel with the first radiating fin. Features.

  According to the present invention, it is possible to secure the mounting accuracy of each optical member and each light source without performing additional processing such as complicated cutting processing on the common bracket (thus reducing the cost). A vehicle lamp unit can be provided.

1 is a perspective view of a vehicular lamp unit 10. FIG. 1 is a top view of a vehicular lamp unit 10. FIG. 1 is an exploded perspective view of a vehicular lamp unit 10. FIG. FIG. 2 is an exploded perspective view of the vehicle lamp unit 10 (fixed with a light source 40). 3 is a perspective view of a common bracket 28. FIG. 3 is a perspective view of a positioning member 20. FIG. 3 is a perspective view of a light source 40. FIG. It is an example of the synthetic | combination light distribution pattern formed on a virtual vertical screen by the vehicle lamp unit. It is a perspective view of the conventional vehicle headlamp 200. FIG.

  Hereinafter, a vehicle lamp unit according to an embodiment of the present invention will be described with reference to the drawings.

  1 is a perspective view of a vehicle lamp unit 10, FIG. 2 is a top view, FIG. 3 is an exploded perspective view, FIG. 4 is an exploded perspective view (fixed with a light source 40), FIG. 5 is a perspective view of a common bracket 28, and FIG. FIG. 7 is a perspective view of the positioning member 20, FIG. 7 is a perspective view of the light source 40, and FIG. 8 is an example of a combined light distribution pattern formed on the virtual vertical screen by the vehicle lamp unit 10.

  The vehicular lamp unit 10 of the present embodiment is mounted on the left and right sides of the front surface of a vehicle such as an automobile to constitute a vehicular headlamp. A known aiming mechanism (not shown) is connected to the vehicular lamp unit 10 so that the optical axis can be adjusted. The vehicular lamp unit 10 (see FIG. 1) mounted on the left side of the front portion of the vehicle and the vehicular lamp unit mounted on the right side of the front portion of the vehicle are symmetrical and have substantially the same configuration. Therefore, the following description will focus on the vehicle lamp unit 10 mounted on the left side of the front portion of the vehicle, and the description of the vehicle lamp unit mounted on the right side of the front portion of the vehicle will be omitted.

  As shown in FIGS. 1 to 5, the vehicular lamp unit 10 includes four optical units 12, 14, 16, 18, four common positioning members 20, a common bracket 28, and the like.

  The common bracket 28 is made of a material having thermal conductivity (for example, an aluminum alloy such as aluminum die casting having excellent thermal conductivity), and as shown in FIG. It is divided into four regions 30, 32, 34, and 36 in the horizontal direction by the edges of the book. By configuring the common bracket 28 with a material having thermal conductivity in this way, the heat radiation performance of the light source 40 is improved, so that the light emission efficiency of the light source 40 can be improved.

[Optical unit 12]
The optical unit 12 is a so-called direct projection type (direct projection type) optical unit, and includes a projection lens 38, a light source 40, and the like, as shown in FIG. The projection lens 38 and the light source 40 are fixed to the common bracket 28 (region 30) with the positioning member 20 interposed therebetween (see FIG. 1). Region 30 is a vertical plane perpendicular to the optical axis AX ₁ that extends in the vehicle longitudinal direction (see FIG. 2).

  The positioning member 20 is a rectangular plate-shaped member made of a material having thermal conductivity (for example, an aluminum alloy such as an aluminum die casting excellent in thermal conductivity, or a copper alloy), as shown in FIG. The notches 20a and 20b are formed in the upper and lower corners of the left or right side E1, and the one side E1 side of the other positioning member 20 abuts between the upper and lower corners 20c and 20d of the other side E2. The recessed part 20e fitted in the state is formed. By constituting only the positioning member 20 with a copper alloy, it is possible to improve the heat dissipation performance while suppressing an increase in mass.

  As shown in FIG. 4, the positioning member 20 is inserted between positioning protrusions 30 a and 30 b protruding forward from the region 30 with one side E1 in a state where the rear surface thereof is in surface contact with the region 30. The positioning projections 30a and 30b are abutted against and are fitted between the positioning projections 30a and 30b. Thereby, the positioning member 20 is positioned with respect to the common bracket 28 (positioning in the vehicle width direction and the vertical direction). In this positioned state, the screw holes 20g, 20h formed in the positioning member 20 and the screw holes 30c, 30d formed in the region 30 communicate with each other.

  As shown in FIG. 6, a substantially central portion of the front surface of the positioning member 20 constitutes a square pyramid-shaped pedestal portion 20j that protrudes forward and has a light source 40 fixed to the tip surface 20i.

As shown in FIGS. 3 and 4, the light source 40 includes screw holes 20 g formed in the positioning member 20 with screws N 1 and N 1 inserted into screw holes 42 a and 42 a of a metal substrate 42 on which the light source 40 is mounted. It is fixed to the common bracket 28 (region 30) with the positioning member 20 in between by being screwed into screw holes 30c, 30c formed in the region 30 that is inserted into 20g and communicates therewith (FIG. 4). reference). Thus, the light source 40 is disposed on the optical axis AX ₁ and the _(reference point or optical center of the optical design) or near the rear focal point F ₃₈ of the projection lens 38 (see FIG. 2). In addition, between the board | substrate 42 with which the light source 40 was mounted, and the positioning member 20, and / or between the positioning member 20 and the common bracket 28 (area | region 30), heat conductive members, such as heat conductive grease, are interposed. Is desirable. In this way, the heat dissipation performance of the light source 40 is improved, so that the light emission efficiency of the light source 40 can be improved.

The light source 40 is a light source using a semiconductor light emitting element such as an LED (light emitting diode) or an LD (laser diode). In the present embodiment, as shown in FIG. 7, the light emitting surface 40a is a horizontally long rectangular shape extending in the vehicle width direction. A white light source is used. The horizontally-long rectangular light emitting surface 40a extending in the vehicle width direction is configured by, for example, arranging white LEDs having a rectangular light emitting surface (for example, 1 mm square light emitting surface × 4) in a line. The optical axis AX ₁ relates the vehicle width direction, passes through the substantially center of the light emitting surface 40a.

  In addition, the light source 40 should just be a light source using semiconductor light emitting elements, such as LED (light emitting diode) and LD (laser diode), and the structure in particular is not ask | required. For example, the light source 40 is a white light source having a structure in which a semiconductor light emitting element (light emitting diode or laser diode) that emits blue light and a wavelength conversion member (such as a YAG phosphor whose emission wavelength is yellow) that is excited and emitted by blue light are combined. It may be a semiconductor light emitting element (light emitting diode or laser diode) that emits ultraviolet light or near ultraviolet light, and a wavelength conversion member that emits light by excitation with ultraviolet light or near ultraviolet light (light emission wavelengths of blue, green, and red). A white light source having a structure in which a mixed phosphor or a blue and yellow mixed phosphor) is combined may be used.

  The light source 40 may be a white light source having a structure in which a semiconductor light emitting element such as an LED or LD and a wavelength conversion member are disposed close to each other (and packaged), or a semiconductor such as an LED or LD. The light source may be a white light source having a structure in which the light emitting element and the wavelength conversion member are spaced apart from each other (they are connected by an optical fiber or a condensing lens is disposed between both).

  The heat generated by the light source 40 is radiated from the radiation fins 22 provided on the rear surface of the common bracket 28 to the surrounding air. By providing the radiation fins 22 in this manner, the heat radiation performance of the light source 40 can be improved, so that the light emission efficiency of the light source 40 can be improved.

As shown in FIG. 3, the projection lens 38 includes screws N2 inserted into screw holes 38b, 38b formed at the tip portions of a pair of leg portions 38a, 38a extending from the left and right sides toward the common bracket 28. N2 is inserted into the screw holes 20h and 20h formed in the positioning member 20 and screwed into the screw holes 30d and 30d formed in the region 30 communicating with the screw holes 20h and 20h. 28 (area 30) (see FIG. 1). Accordingly, the projection lens 38 is disposed on the front and the optical axis AX ₁ of the light source 40 (see FIG. 2).

  The projection lens 38 is an optical member that controls the light emitted from the light source 40. In this embodiment, the projection lens 38 is a cut-off line in which the light from the light source 40 that passes through the projection lens 38 forms a part of the light distribution pattern. A lens in which the refraction direction of the light incident from the light source 40 is designed according to the shape of the incident surface and / or the output surface is used so as to form the partial light distribution pattern P1 including it.

  Note that the projection lens 38 is an optical member configured to form a partial distribution light pattern P1 including a cut-off line, which forms part of the passing light distribution pattern by controlling the light emitted from the light source 40. For example, it may be a light guide optical system (for example, a light guide lens) that controls light from the light source 40 by reflection and refraction.

  According to the optical unit 12 configured as described above, the light emitted from the light source 40 passes through the projection lens 38 and is irradiated forward, and is placed on a virtual vertical screen facing the front of the vehicle (approximately 25 m ahead of the front of the vehicle). A partial distribution light pattern P1 including a cut-off line is formed (see FIG. 8).

  Further, according to the optical unit 12 configured as described above, the light source 40 and the projection lens 38 (corresponding to the optical member of the present invention) are fixed to the common bracket 28 (region 30) with the positioning member 20 interposed therebetween. Therefore, the relative positional relationship between the light source 40 and the projection lens 38 is determined based on the positioning member 20 instead of the common bracket 28. Therefore, according to the optical unit 12 having the above-described configuration, the light source 40 and the projection lens 38 are not subjected to additional processing such as complicated cutting processing on the common bracket 28 (region 30 or the like) (thus, cost is reduced). It is possible to ensure the mounting accuracy.

[Optical unit 14]
Compared with the optical unit 12, the optical unit 14 uses a projection lens 44 instead of the projection lens 38, and the projection lens 44 and the light source 40 are located in the region 32 adjacent to the left of the region 30 with the positioning member 20 interposed therebetween. It is different in that it is fixed (see FIGS. 3 and 4). Other than that, the configuration is the same as that of the optical unit 12. Hereinafter, the difference from the optical unit 12 will be mainly described, and the same components as those of the optical unit 12 will be denoted by the same reference numerals and description thereof will be omitted.

The optical unit 14 is a so-called direct projection type (direct projection type) optical unit, and includes a projection lens 44, a light source 40, and the like, as shown in FIGS. The projection lens 44 and the light source 40 are fixed to the common bracket 28 (region 32) with the positioning member 20 interposed therebetween. Region 32, the horizontal left angle θ1 with respect to the optical axis AX ₁ is a (e.g., left 7.5 °) inclined vertical plane perpendicular to the optical axis AX ₂ (see FIG. 2).

  As shown in FIG. 4, the positioning member 20 has its rear surface in surface contact with the region 32, and one side E1 side is inserted into the recess 20e of the positioning member 20 fixed to the region 30 and abuts against this. And is fitted in the recess 20e (see FIG. 4). Thereby, the positioning member 20 is positioned with respect to the common bracket 28 (positioning in the vehicle width direction and the vertical direction). In this positioned state, the screw holes 20g and 20h formed in the positioning member 20 and the screw holes 32c and 32d formed in the region 32 communicate with each other.

As shown in FIGS. 3 and 4, the light source 40 includes screw holes 20 g formed in the positioning member 20 with screws N 1 and N 1 inserted into screw holes 42 a and 42 a of a metal substrate 42 on which the light source 40 is mounted. It is fixed to the common bracket 28 (region 32) with the positioning member 20 in between by being screwed into screw holes 32c and 32c formed in the region 32 that is inserted into 20g and communicates therewith (FIG. 4). reference). Thus, the light source 40 is disposed _(reference point or optical center of the optical design) or near the rear focal point F ₄₄ after the optical axis AX ₂ on and a projection lens 44 (see FIG. 2). In addition, between the board | substrate 42 with which the light source 40 was mounted, and the positioning member 20, and / or between the positioning member 20 and the common bracket 28 (area | region 32), heat conductive members, such as heat conductive grease, are interposed. Is desirable. In this way, the heat dissipation performance of the light source 40 is improved, so that the light emission efficiency of the light source 40 can be improved.

As shown in FIG. 3, the projection lens 44 includes screws N2 inserted into screw holes 44b and 44b formed at the tip portions of a pair of leg portions 44a and 44a extending from the left and right sides toward the common bracket 28. N2 is inserted into the screw holes 20h, 20h formed in the positioning member 20 and screwed into the screw holes 32d, 32d formed in the region 32 communicating with the same, thereby sandwiching the positioning member 20 in between. 28 (region 32) (see FIG. 1). Accordingly, the projection lens 44 is disposed on the front and the optical axis AX ₂ of the light source 40 (see FIG. 2).

  The projection lens 44 is an optical member that controls the light emitted from the light source 40. In this embodiment, the light from the light source 40 that passes through the projection lens 44 is thin in the vertical direction that forms part of the light distribution pattern. A lens is used in which the direction of refraction of light incident from the light source 40 is designed according to the shape of the incident surface and / or the output surface so as to form a partial distribution light pattern P2 that is wide in the horizontal direction.

  The projection lens 44 is configured to control the light emitted from the light source 40 so as to form a partial light distribution pattern P2 that is thin in the vertical direction and wide in the horizontal direction that forms part of the passing light distribution pattern. Any optical member may be used. For example, a light guide optical system (for example, a light guide lens) that controls light from the light source 40 by reflection and refraction may be used.

  According to the optical unit 14 configured as described above, the light emitted from the light source 40 passes through the projection lens 44 and is irradiated forward, and is placed on a virtual vertical screen (approx. 25 m forward from the front of the vehicle) facing the front of the vehicle. A partial light distribution pattern P2 that is thin in the vertical direction and wide in the horizontal direction is formed (see FIG. 8).

  Further, according to the optical unit 14 configured as described above, the light source 40 and the projection lens 44 (corresponding to the optical member of the present invention) are fixed to the common bracket 28 (region 32) with the positioning member 20 interposed therebetween. Therefore, the relative positional relationship between the light source 40 and the projection lens 44 is determined based on the positioning member 20 instead of the common bracket 28. Therefore, according to the optical unit 14 having the above-described configuration, the light source 40 and the projection lens 44 are not subjected to additional processing such as complicated cutting processing on the common bracket 28 (region 32 or the like) (thus, cost is reduced). It is possible to ensure the mounting accuracy.

[Optical unit 16]
The optical unit 16 is different from the optical unit 14 in that the projection lens 44 and the light source 40 are fixed to a region 34 adjacent to the left of the region 32 with the positioning member 20 interposed therebetween (see FIGS. 3 and 4). ). Other than that, the configuration is the same as that of the optical unit 14. Hereinafter, the difference from the optical unit 14 will be mainly described, and the same components as those of the optical unit 14 will be denoted by the same reference numerals and description thereof will be omitted.

The optical unit 16 is a so-called direct projection type (direct projection type) optical unit, and includes a projection lens 44, a light source 40, and the like, as shown in FIGS. The projection lens 44 and the light source 40 are fixed to the common bracket 28 (region 34) with the positioning member 20 interposed therebetween. Region 34, the horizontal left angle θ1 with respect to the optical axis AX ₁ is a (e.g., left 15 °) inclined vertical plane perpendicular to the optical axis AX ₃ (see FIG. 2).

  As shown in FIG. 4, the positioning member 20 is inserted into the recess 20 e of the positioning member 20 fixed to the region 32, with the rear surface thereof in surface contact with the region 34. And is fitted in the recess 20e (see FIG. 4). Thereby, the positioning member 20 is positioned with respect to the common bracket 28 (positioning in the vehicle width direction and the vertical direction). In this positioned state, the screw holes 20g and 20h formed in the positioning member 20 and the screw holes 34c and 34d formed in the region 34 communicate with each other.

As shown in FIGS. 3 and 4, the light source 40 includes screw holes 20 g formed in the positioning member 20 with screws N 1 and N 1 inserted into screw holes 42 a and 42 a of a metal substrate 42 on which the light source 40 is mounted. It is fixed to the common bracket 28 (region 34) with the positioning member 20 interposed therebetween by being screwed into screw holes 34c, 34c formed in the region 34 that is inserted into 20g and communicated therewith (FIG. 4). reference). Thus, the light source 40 is disposed on the optical axis AX ₃ and the _(reference point or optical center of the optical design) or near the rear focal point F ₄₄ of the projection lens 44 (see FIG. 2). In addition, between the board | substrate 42 with which the light source 40 was mounted, and the positioning member 20, and / or between the positioning member 20 and the common bracket 28 (area | region 34), heat conductive members, such as heat conductive grease, are interposed. Is desirable. In this way, the heat dissipation performance of the light source 40 is improved, so that the light emission efficiency of the light source 40 can be improved.

As shown in FIG. 3, the projection lens 44 includes screws N2 inserted into screw holes 44b and 44b formed at the tip portions of a pair of leg portions 44a and 44a extending from the left and right sides toward the common bracket 28. N2 is inserted into the screw holes 20h and 20h formed in the positioning member 20 and screwed into the screw holes 34d and 34d formed in the region 34 communicating therewith, so that the positioning bracket 20 is sandwiched between the common brackets. 28 (region 34) (see FIG. 1). Accordingly, the projection lens 44 is disposed on the front and the optical axis AX ₃ of the light source 40 (see FIG. 2).

  According to the optical unit 16 having the above-described configuration, the light emitted from the light source 40 is transmitted forward through the projection lens 44, and is disposed in front of a virtual vertical screen (approximately 25 m ahead of the vehicle front). A partial light distribution pattern P3 that is thin in the vertical direction and wide in the horizontal direction is formed (see FIG. 8).

  Further, according to the optical unit 16 having the above configuration, the light source 40 and the projection lens 44 (corresponding to the optical member of the present invention) are fixed to the common bracket 28 (region 34) with the positioning member 20 interposed therebetween. Therefore, the relative positional relationship between the light source 40 and the projection lens 44 is determined based on the positioning member 20 instead of the common bracket 28. Therefore, according to the optical unit 16 having the above-described configuration, the light source 40 and the projection lens 44 can be obtained without performing additional processing such as complicated cutting processing on the common bracket 28 (region 34, etc.) (thus reducing the cost). It is possible to ensure the mounting accuracy.

[Optical unit 18]
The optical unit 18 is different from the optical unit 14 in that the projection lens 44 and the light source 40 are fixed to a region 36 adjacent to the left of the region 34 with the positioning member 20 interposed therebetween (see FIGS. 3 and 4). ). Other than that, the configuration is the same as that of the optical unit 14. Hereinafter, the difference from the optical unit 14 will be mainly described, and the same components as those of the optical unit 14 will be denoted by the same reference numerals and description thereof will be omitted.

The optical unit 16 is a so-called direct projection type (direct projection type) optical unit, and includes a projection lens 44, a light source 40, and the like, as shown in FIGS. The projection lens 44 and the light source 40 are fixed to the common bracket 28 (region 36) with the positioning member 20 interposed therebetween. Region 36, the horizontal left angle θ1 with respect to the optical axis AX ₁ is a (e.g., left 22.5 °) inclined vertical plane perpendicular to the optical axis AX ₄ (see FIG. 2).

  As shown in FIG. 4, the positioning member 20 has its rear surface in surface contact with the region 36, and one side E <b> 1 side is inserted into the recess 20 e of the positioning member 20 fixed to the region 34 and abuts against this. And is fitted in the recess 20e (see FIG. 4). Thereby, the positioning member 20 is positioned with respect to the common bracket 28 (positioning in the vehicle width direction and the vertical direction). In this positioned state, the screw holes 20g and 20h formed in the positioning member 20 and the screw holes 36c and 36d formed in the region 36 communicate with each other.

As shown in FIGS. 3 and 4, the light source 40 includes screw holes 20 g formed in the positioning member 20 with screws N 1 and N 1 inserted into screw holes 42 a and 42 a of a metal substrate 42 on which the light source 40 is mounted. It is fixed to the common bracket 28 (region 36) with the positioning member 20 interposed therebetween by being screwed into screw holes 36c and 36c formed in the region 36 that is inserted into 20g and communicated therewith (FIG. 4). reference). Thus, the light source 40 is disposed on the optical axis AX ₄ and the _(reference point or optical center of the optical design) or near the rear focal point F ₄₄ of the projection lens 44 (see FIG. 2). In addition, between the board | substrate 42 with which the light source 40 was mounted, and the positioning member 20, and / or between the positioning member 20 and the common bracket 28 (area | region 34), heat conductive members, such as heat conductive grease, are interposed. Is desirable. In this way, the heat dissipation performance of the light source 40 is improved, so that the light emission efficiency of the light source 40 can be improved.

As shown in FIG. 3, the projection lens 44 includes screws N2 inserted into screw holes 44b and 44b formed at the tip portions of a pair of leg portions 44a and 44a extending from the left and right sides toward the common bracket 28. N2 is inserted into the screw holes 20h and 20h formed in the positioning member 20 and screwed into the screw holes 36d and 36d formed in the region 36 communicating therewith, so that the common bracket with the positioning member 20 interposed therebetween 28 (region 36) (see FIG. 1). Accordingly, the projection lens 44 is disposed on the front and the optical axis AX ₄ of the light source 40 (see FIG. 2).

  According to the optical unit 18 configured as described above, the light emitted from the light source 40 passes through the projection lens 44 and is irradiated forward, and is placed on a virtual vertical screen (approx. 25 m forward from the front of the vehicle) facing the front of the vehicle. A partial light distribution pattern P4 that is thin in the vertical direction and wide in the horizontal direction is formed (see FIG. 8).

  Further, according to the optical unit 18 configured as described above, the light source 40 and the projection lens 44 (corresponding to the optical member of the present invention) are fixed to the common bracket 28 (region 36) with the positioning member 20 interposed therebetween. Therefore, the relative positional relationship between the light source 40 and the projection lens 44 is determined based on the positioning member 20 instead of the common bracket 28. Therefore, according to the optical unit 18 having the above-described configuration, the light source 40 and the projection lens 44 can be obtained without performing additional processing such as complicated cutting processing on the common bracket 28 (region 36, etc.) (thus, cost is reduced). It is possible to ensure the mounting accuracy.

  The individual partial light distribution patterns P1, P2, P3, and P4 formed by the optical units 12, 14, 16, and 18 are superimposed on a virtual vertical screen as shown in FIG. A pattern (synthetic light distribution pattern) is formed.

  As described above, according to the vehicle lamp unit 10 of the present embodiment, the individual light sources 40 and the individual projection lenses 38 and 44 are fixed to the common bracket 28 with the positioning member 20 interposed therebetween. Therefore, the relative positional relationship between the individual light sources 40 and the individual projection lenses 38 and 44 is determined based on the positioning member 20 instead of the common bracket 28. Therefore, according to the vehicular lamp unit 10 of the present embodiment, the individual light sources 40 and the individual projections can be obtained without performing additional machining such as complicated cutting on the common bracket 28 (thus reducing the cost). It becomes possible to ensure the mounting accuracy of the lenses 38 and 44.

  In order to secure the mounting accuracy of the individual light sources 40 and the individual projection lenses 38 and 44, it is necessary to perform additional processing such as cutting on the positioning member 20. Since 20 is a simple rectangular plate-like member, additional processing such as complicated cutting is unnecessary, and furthermore, cost can be reduced by creating a large number of common-shaped positioning members 20. For this reason, the cost can be reduced.

  Further, according to the vehicle lamp unit 10 of the present embodiment, one positioning member 20 (for example, the positioning member 20 of the optical unit 12) is part of the common bracket 28 (for example, positioning protrusions 30a and 30b). The other positioning member 20 (for example, the positioning member 20 of the optical unit 14) is abutted against a part of the positioned one positioning member 20 (for example, the recess 20e). Because it is configured to be applied and positioned with respect to the common bracket 28 (that is, because it is configured to position the other positioning member 20 using a part of one positioning member 20), the other positioning member It is not necessary to provide the common bracket 28 with a portion against which the 20 is abutted. It is possible to configure the 28 simple and low cost.

  Further, according to the vehicle lamp unit 10 of the present embodiment, the light source 40 and the projection lens 38 of one optical unit (for example, the optical unit 12), and the light source 40 of the other optical unit (for example, the optical unit 14). Since the projection lens 44 is arranged in different directions in the horizontal direction, it is possible to form a combined light distribution pattern that is wide in the horizontal direction.

  Further, according to the vehicular lamp unit 10 of the present embodiment, since the configuration using the positioning member 20 having a common shape, the cost can be reduced as compared with the case where the positioning member 20 having a different shape is used ( Cost reduction by creating a large number of common-shaped positioning members 20).

  Next, a modified example will be described.

  In the above embodiment, an example using four optical units 12, 14, 16, and 18 has been described, but the present invention is not limited to this. There may be at least two optical units (for example, optical units 12 and 14).

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. 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 unit, 12, 14, 16, 18 ... Optical unit, 20 ... Positioning member, 20a, 20b ... Vertical notch part, 20c, 20d ... Vertical corner part, 20e ... Recessed part, 20g, 20h ... Screw hole, 20i ... tip surface, 20j ... pedestal, 22 ... radiation fin, 28 ... common bracket, 30, 32, 34, 36 ... area, 30a ... positioning projection, 38 ... projection lens, 38a ... leg, 40 ... light source 40a ... light emitting surface, 42 ... substrate, 44 ... projection lens, 44a ... leg part

Claims (6)

A common bracket,
At least two optical units comprising: a light source using a semiconductor light emitting element; an optical member for controlling light emitted from the light source; and a positioning member;
With
The positioning member of one of the optical units is abutted against a part of the common bracket and positioned with respect to the common bracket,
The light source and the optical member of the one optical unit are fixed to the common bracket with the positioning member positioned against a part of the common bracket interposed therebetween,
The positioning member of the other optical unit of the optical units is abutted against a part of the positioning member fixed to the common bracket and is positioned with respect to the common bracket,
The light source and the optical member of the other optical unit are fixed to the common bracket with the positioning member positioned against the part of the positioning member fixed to the common bracket. And
The common bracket has heat dissipating fins formed on the back surface of the surface with which the positioning member contacts,
The light source and the optical member of the one optical unit and the light source and the optical member of the other optical unit are arranged in different directions in the horizontal direction,
The common bracket is horizontally divided into at least a first region and a second region by an edge;
The first region is constituted by a vertical plane orthogonal to the optical axis extending in the vehicle longitudinal direction,
The vehicular lamp unit according to claim 2, wherein the second region includes a vertical plane orthogonal to an optical axis inclined at a predetermined horizontal angle with respect to the optical axis . The vehicle lamp unit according to claim 1, wherein the positioning member of the one optical unit and the positioning member of the other optical unit have a common shape. The vehicle lamp unit according to claim 1 or 2 , wherein the positioning member of the one optical unit and the positioning member of the other optical unit are made of a material having thermal conductivity. Vehicle lamp unit according to any of claims 1 3, characterized in that it is composed of a material the common bracket with a thermal conductivity.   5. The vehicular lamp unit according to claim 1, wherein the first area is formed closer to the center of the vehicle than the second area.   The radiation fin includes at least a first radiation fin and a second radiation fin,
  The first heat dissipating fin extends in a vertical direction with respect to the plane of the first region,
  The vehicular lamp unit according to any one of claims 1 to 5, wherein the second radiating fin is extended in parallel with the first radiating fin.

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