JP7221782B2 - lighting unit - Google Patents

Description

The present invention relates to a lamp unit in which a light emitting element and a reflector are supported by a heat sink.

2. Description of the Related Art Conventionally, as a configuration of a lamp unit including a light emitting element and a reflector that reflects light emitted from the light emitting element toward the front of the unit, there has been known a lamp unit in which the light emitting element and the reflector are supported by a heat sink.

Japanese Patent Application Laid-Open No. 2002-200002 describes a configuration of such a lamp unit, in which a power supply attachment for supplying power to a light emitting element is attached to a heat sink.

The power supply attachment described in this "Patent Document 1" has a configuration in which it is fastened to heat sinks at two locations on the left and right thereof, and has a configuration in which connector portions are formed at the ends in the left and right direction. .

On the other hand, Japanese Patent Application Laid-Open No. 2002-200002 describes a configuration of such a power supply attachment for a lamp unit, in which connector portions are formed inside two fastening positions to heat sinks on the left and right sides of the power supply attachment.

JP 2014-197550 A JP 2014-17274 A

In the lighting unit described in "Patent Document 1" above, it is necessary to increase the lateral width of the lighting unit to some extent in order to support the reflector with respect to the heat sink without interfering with the connector portion of the power supply attachment. There is

On the other hand, in the lamp unit described in "Patent Document 2", the connector portion of the power supply attachment is formed inside the two fastening positions on the left and right, but this power supply attachment is formed so that the connector portion faces the front side of the unit. Therefore, depending on the configuration of the lamp unit, it is difficult to connect the connector of the power supply wiring to the power supply attachment.

For example, if the lighting unit is a projector-type lighting unit equipped with a reflector, since unit components such as a projection lens, solenoid, and shade are arranged on the front side of the unit from the power supply attachment, the connector section is located in front of the unit. If it is formed so as to face the side, it becomes difficult not only to connect the connector of the power supply wiring to the power supply attachment, but also to shorten the longitudinal length of the lamp unit.

The present invention has been made in view of such circumstances. It is an object of the present invention to provide a lamp unit which can easily connect a connector of wiring for power supply to a power supply attachment while suppressing the lateral width.

The present invention is intended to achieve the above object by devising the configuration of the power supply attachment.

That is, the lamp unit according to the present invention is
A lamp unit comprising: a light emitting element; a reflector that reflects light emitted from the light emitting element toward the front of the unit; and a heat sink that supports the light emitting element and the reflector,
A power supply attachment for supplying power to the light emitting element is attached to the heat sink,
The power supply attachment is fastened to the heat sink at two locations on the left and right of the power supply attachment,
The connector portion of the power supply attachment is formed so as to extend to the rear side of the unit from the rear end position of the reflector inside the two fastening positions on the left and right sides.

The "reflector" may be directly supported by the heat sink, or may be supported by the heat sink via another member.

As long as the above-mentioned "power supply attachment" is fastened to the heat sink at the left and right sides of the power supply attachment, the specific fastening position is not particularly limited, and the specific fastening method is not particularly limited. For example, it is possible to employ screw tightening, caulking, or the like.

If the above-mentioned "connector section" is formed so as to extend to the rear side of the unit from the rear end position of the reflector inside the two fastening positions on the left and right, the specific formation position, the direction of the opening, etc. It is not particularly limited.

The lighting unit according to the present invention has a configuration in which a power supply attachment is attached to a heat sink that supports a light emitting element and a reflector. Since the connector portion of the attachment is formed so as to extend to the rear side of the unit from the rear end position of the reflector inside the two fastening positions on the left and right sides, the following effects can be obtained.

That is, compared to the case where the connector portion is formed at the left-right end of the power supply attachment, the lateral width dimension of the power supply attachment can be reduced, so that the reflector can be supported with respect to the heat sink by the connector portion of the power supply attachment. It is possible to easily perform the operation without interference, and thereby the lateral width of the lamp unit can be reduced.

In addition, since the power supply attachment is formed so that its connector part extends to the rear side of the unit from the rear end position of the reflector, it is possible to connect the power supply wiring to the connector using the rear space of the reflector. can be easily done.

As described above, according to the present invention, in a lamp unit in which a light-emitting element and a reflector are supported by a heat sink, even if the power supply attachment is attached to the heat sink, the left-right width of the lamp unit can be kept small. The connector of the wiring for power supply can be easily connected to the power supply attachment.

Moreover, as in the present invention, the connector portion of the power supply attachment extends to the rear side of the unit from the rear end position of the reflector. , the connection work can be performed while pressing the connector portion of the power supply attachment. Therefore, it is possible to prevent the position of the reflector from deviating from the intended position due to the reflector being pressed carelessly during the connection work.

In the above configuration, if the connector portion of the power supply attachment is formed so as to open toward the rear of the unit, it becomes possible to more easily connect the power supply wiring to the connector.

In the above configuration, if the connector portion of the power supply attachment is formed so as to protrude toward the reflector on the rear side of the unit from the rear end position of the reflector, the following effects can be obtained. .

That is, when the connector portion of the power supply attachment is positioned inside the two fastening positions on the left and right sides, it is necessary to form a concave portion in the heat sink to avoid interference with the connector portion. On the other hand, since the portions of the heat sink located inside the two fastening positions on the left and right sides are close to the light emitting elements, there is a high need to dissipate the heat generated by the lighting of the light emitting elements. Therefore, by configuring the connector portion of the power supply attachment to protrude toward the reflector side on the rear side of the unit from the rear end position of the reflector, it is formed on the heat sink in order to avoid interference with the connector portion. It is possible to make the recess shallow or eliminate the need to form this recess. As a result, it is possible to effectively prevent deterioration of the heat dissipation function of the heat sink due to the arrangement of the connector portion inside the two fastening positions on the left and right.

In the above configuration, if the connector portion of the power supply attachment is further formed at the center position of the two fastening positions on the left and right, a pair of left and right lighting units can be used, for example, like a vehicle lighting device such as a headlamp. Even in such a case, it is possible to easily share the power supply attachment between both lamp units.

Here, the above-mentioned "center position" means a position that intersects a vertical plane extending in the front-rear direction of the unit so as to pass through the centers of the two fastening positions on the left and right.

In the above configuration, the reflector is further configured to be fastened to the heat sink at the two left and right points, and a contact portion that contacts the heat sink is located at the rear side of the unit from the two left and right fastening positions. With such a configuration, the reflector can be supported by the heat sink by a three-point support structure, thereby improving the positioning accuracy of the reflector.

At that time, the specific formation position, specific shape, and the like of the above-mentioned "contact portion" are not particularly limited.

In the above configuration, the light-emitting element is further mounted on the upper surface of the heat sink, and the area on the upper surface of the heat sink where the light-emitting element is mounted is an inclined surface that slopes downward toward the rear of the unit. If so, the longitudinal length of the lamp unit can be shortened by the amount of the inclination. Moreover, by adopting such a configuration, it is possible to increase the incidence efficiency of the light emitted from the light emitting element to the reflector.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional side view showing a vehicle lamp including a lamp unit according to an embodiment of the present invention; Plan view showing the lamp unit Detailed view of part III in Fig. 1 Figure 3 IV direction arrow view V direction arrow view of FIG. FIG. 4 is a view similar to FIG. 3, showing a first modification of the above embodiment; FIG. 4 is a view similar to FIG. 3 showing a second variant of the above embodiment;

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view showing a vehicle lamp 100 including a lamp unit 10 according to one embodiment of the present invention. 2 is a plan view showing the lamp unit 10. FIG.

In these figures, the direction indicated by X is the "front of the unit", the direction indicated by Y is the "left direction" perpendicular to the "front of the unit" ("right direction" when viewed from the front of the unit), and the direction indicated by Z. is the "upward direction". The same applies to figures other than these.

A vehicle lamp 100 is a headlamp provided at the front end of a vehicle. It is housed in a state in which the optical axis has been adjusted so as to match the longitudinal direction of the vehicle.

The lamp unit 10 includes a projection lens 12, a light emitting element 14 arranged behind the rear focal point F of the projection lens 12, and a light emitting element 14 arranged to cover the light emitting element 14 from above. 14 and a movable shade 18 arranged between the light emitting element 14 and the projection lens 12 .

The projection lens 12 is a plano-convex aspheric lens having a convex front surface and a flat rear surface, and has an optical axis Ax extending in the front-rear direction of the unit. The projection lens 12 projects the light source image formed on the rear focal plane, which is the focal plane including the rear focal point F, as an inverted image onto a virtual vertical screen in front of the lamp.

FIG. 3 is a detailed view of part III in FIG. 4 is a view in the direction of arrow IV in FIG. 3, and FIG. 5 is a view in the direction of arrow V in FIG.

As shown in these figures, the light emitting element 14 is a white light emitting diode and has a horizontally long rectangular light emitting surface 14a. The light emitting element 14 is supported by the heat sink 22 via the light source supporting member 20 with the light emitting surface 14a facing upward below the optical axis Ax.

A light source support area 22a1, in which the light source support member 20 is supported on the upper surface 22a of the heat sink 22, is formed in a planar shape so as to protrude upward with respect to the surrounding area. The light source support area 22a1 and its peripheral area are formed of an inclined surface that is inclined downward toward the rear of the unit. there is

A power supply attachment 30 for supplying power to the light emitting element 14 is attached to the upper surface 22a of the heat sink 22 (this will be described later).

The reflector 16 has a reflective surface 16a formed of a substantially ellipsoidal curved surface with the light emission center of the light emitting element 14 as the first focus. The reflective surface 16a has an elliptical cross-sectional shape along its long axis with a second focus at a point located slightly forward of the rear focal point F, and its eccentricity is set to It is set to gradually increase toward The reflector 16 is supported by heat sinks 22 on both left and right sides thereof (this will also be described later).

On the other hand, the projection lens 12 is supported by a lens holder 24 at its outer peripheral flange portion.

The lens holder 24 includes a holder main body 24A for supporting the projection lens 12, a pair of left and right arm portions 24B formed to extend rearward of the unit from both left and right sides of the holder main body 24A, and a pair of left and right arms. A connecting portion 24C that connects the rear end portion of the portion 24B. At that time, the pair of left and right arm portions 24B are formed so as to bend toward the optical axis Ax at their rear end portions, and the connecting portion 24C is formed so as to surround the reflector 16 in a substantially arc shape. . The lens holder 24 is attached to the heat sink 22 in the vicinity of the rear end portions of the pair of left and right arm portions 24B (this will also be described later).

As shown in FIG. 1, the movable shade 18 is rotatably supported by the heat sink 22 via a rotating pin 26 extending in the horizontal direction below the optical axis Ax. The movable shade 18 is formed so as to extend obliquely upward from its front end toward the rear of the unit, and its upper edge 18a is formed so as to extend horizontally in a stepped manner.

The movable shade 18 has a light shielding position (the position indicated by the solid line in FIG. 1) at which part of the reflected light from the reflector 16 directed toward the projection lens 12 is shielded by driving the actuator 28 supported by the heat sink 22; A light blocking release position (a position indicated by a chain double-dashed line in FIG. 1) can be obtained by turning downward from this light blocking position by a predetermined angle to release the light blocking. The actuator 28 is supported by the heat sink 22 by screwing and is driven when a beam switching switch (not shown) is operated.

As shown in FIG. 4, the light source support member 20 that supports the light emitting element 14 has a laterally long rectangular outer shape in a plan view. A pair of left and right terminal portions 20a electrically connected to 14 cathode electrodes and 14 anode electrodes are arranged.

In the power supply attachment 30, a pair of left and right bus bar electrodes 34 for achieving electrical continuity with the light emitting element 14 are partially exposed from an insulating member 32 formed so as to surround the light source support member 20. It is configured as an insert-molded product that is buried in a

The insulating member 32 is a plate-like member having a laterally long rectangular outer shape in a plan view, and has a laterally long rectangular opening 32a formed at the center position in the left-right direction.

The insulating member 32 has a pair of left and right flange portions 32b that horizontally protrude from both left and right sides thereof. At that time, a pair of left and right positioning pins 22b are formed on the upper surface 22a of the heat sink 22, and a pair of left and right positioning pins 22b are engaged with the pair of left and right flange portions 32b of the insulating member 32. Holes 32c are formed respectively. One of the pair of left and right engagement holes 32c is formed in a circular shape, and the other is formed in a horizontally long rectangular shape.

The pair of left and right busbar electrodes 34 are provided with two pairs of left and right terminal pieces 34a protruding into the opening 32a. It is designed to be electrically connected.

The pair of left and right bus bar electrodes 34 are provided with two pairs of front and rear pressing pieces 34b protruding into the opening 32a. 22 so as not to float.

At this time, each terminal piece 34a and each pressing piece 34b are configured as elastic pieces that elastically press the light source support member 20 from above.

The insulating member 32 has a connector portion 32d projecting from its rear portion toward the rear of the unit.

The connector portion 32d is formed to extend to the rear side of the unit from the rear end position of the reflector 16, and is open toward the rear of the unit. In this case, the connector portion 32d is formed at the central position (that is, the position just below the optical axis Ax) of two fastening positions on the left and right between the insulating member 32 and the heat sink 22 . Further, the connector portion 32d is formed so as to protrude in both the upper and lower sides on the rear side of the unit from the rear end position of the reflector 16. As shown in FIG.

A rectangular hole 32d1 extending in the front-rear direction of the unit is formed in the upper wall portion of the connector portion 32d, and rectangular concave portions 32d2 are formed in the left and right side wall portions of the connector portion 32d.

Terminal pins 34c of a pair of left and right bus bar electrodes 34 protrude toward the rear of the unit in the internal space of the connector portion 32d. Each of the pair of left and right terminal pins 34c is formed in a plate-like shape, and the plate surface is slanted toward the rear side of the unit with respect to the vertical direction (that is, the pair of left and right terminal pins 34c are arranged side by side). (second direction perpendicular to the first direction). A connector (not shown) for the power supply wiring is inserted into the inner space of the connector portion 32d, and is fitted into the rectangular hole 32d1 and the pair of left and right recesses 32d2, whereby the power supply attachment 30 and the power supply wiring are connected. are electrically connected to each other.

The heat sink 22 is formed such that its rear end position is substantially at the same position as the rear end edge of the connector portion 32d. A concave portion 22a2 having a shape along the shape of the lower end portion of the connector portion 32d is formed on the upper surface 22a of the rear end portion of the heat sink 22 (that is, the surface on which the power supply attachment 30 is placed). Furthermore, a plurality of heat radiation fins 22c are formed in the rear region of the heat sink 22 so as to extend downward.

As shown in FIG. 4, the reflector 16 has a pair of left and right flange portions 16b projecting horizontally from the lower ends of the left and right sides thereof in a flat plate shape. It is fixed to the upper surface 22 a of the heat sink 22 together with the holder 24 .

At this time, the portion of the upper surface 22a of the heat sink 22 to which the reflector 16 is attached is formed as a pair of left and right upward protruding surfaces 22a3 that protrude upward from other portions of the upper surface 22a as shown in FIG. A pair of left and right mounting surfaces 24Ba for mounting a pair of left and right flange portions 16b of the reflector 16 are formed near the rear end portion of the pair of left and right arm portions 24B of the lens holder 24. there is The pair of left and right mounting surfaces 24Ba are inclined downward toward the rear of the unit. is set to the same value as the tilt angle of

A pair of left and right positioning pins 24b are formed on the pair of left and right placement surfaces 24Ba. On the other hand, the pair of left and right flange portions 16b of the reflector 16 are formed with engagement holes 16c that engage with the pair of left and right positioning pins 24b. One of the pair of left and right engagement holes 16c is circular, and the other is oblong.

A pair of left and right flange portions 16b of the reflector 16 are formed with a pair of left and right screw insertion holes 16d, and a pair of left and right mounting surfaces 24Ba of the lens holder 24 are formed with a pair of left and right screw insertion holes 24d. are formed, one of which is circular and the other is oblong.

As shown in FIGS. 4 and 5, the reflector 16 is formed with contact portions 16e that contact the heat sink 22 at positions located on the rear side of the unit relative to the two fastening positions on the left and right sides of the heat sink 22. As shown in FIG. The abutment portion 16e is formed as a projection extending downward from the lower end portion of the reflector 16 at a position near the left side of the recessed portion 22a2 of the heat sink 22, and then abutting against the upper surface 22a of the heat sink 22. configured to touch.

Further, as shown in FIG. 1, contact portions 22d that contact the lens holder 24 are formed at the front end portions of the pair of left and right upwardly projecting surfaces 22a3 on the upper surface 22a of the heat sink 22, respectively.

The pair of left and right contact portions 22 d are formed as projections extending upward, and are configured to contact the lower surfaces of the pair of left and right arm portions 24 B of the lens holder 24 .

Next, the operation of this embodiment will be described.

The lamp unit 10 according to this embodiment has a configuration in which the power supply attachment 30 is attached to the heat sink 22 that supports the light emitting element 14 and the reflector 16. However, since the connector portion 32d of the power supply attachment 30 is formed so as to extend to the rear side of the unit from the rear end position of the reflector 16 inside the two fastening positions on the left and right sides, the following action will be taken. effect can be obtained.

That is, compared to the case where the connector portion 32d is formed at the end of the power supply attachment 30 in the left-right direction, the lateral width dimension of the power supply attachment 30 can be reduced. This can be easily performed without interfering with the connector portion 32d of the attachment 30, so that the lateral width of the lamp unit 10 can be reduced.

In addition, since the connector portion 32d of the power supply attachment 30 is formed to extend to the rear side of the unit from the rear end position of the reflector 16, the rear space of the reflector 16 can be used as a connector for the power supply wiring. connection work can be easily performed.

As described above, according to the present embodiment, in the lamp unit 10 in which the light emitting element 14 and the reflector 16 are supported by the heat sink 22 , even if the power supply attachment 30 is attached to the heat sink 22 , the left and right sides of the lamp unit 10 The connector of the wiring for power supply can be easily connected to the power supply attachment 30 while keeping the width dimension small.

Moreover, as in this embodiment, the connector portion 32d of the power supply attachment 30 is formed to extend to the rear side of the unit from the rear end position of the reflector 16, so that the power supply wiring for the power supply attachment 30 is not required. When connecting the connector, the connection work can be performed while the connector portion 32d of the power supply attachment 30 is pressed. Therefore, it is possible to prevent the position of the reflector 16 from deviating from the intended position due to the reflector 16 being carelessly pressed during the connection work.

At this time, in this embodiment, the connector portion 32d of the power supply attachment 30 is formed so as to open toward the rear of the unit, so that the work of connecting the power supply wiring to the connector can be performed more easily. Become.

Further, in the present embodiment, the connector portion 32d of the power supply attachment 30 is formed so as to protrude both upward and downward on the rear side of the unit from the rear end position of the reflector 16 (that is, so as to protrude also to the reflector 16 side). Therefore, the following effects can be obtained.

That is, when the connector portion 32d of the power supply attachment 30 is located inside the two fastening positions on the left and right sides, the heat sink 22 may be formed with a concave portion 22a2 for avoiding interference with the connector portion 32d. necessary. On the other hand, since the portions of the heat sink 22 located inside the fastening positions of the two right and left portions are close to the light emitting element 14, it is highly necessary to dissipate the heat generated by the lighting of the light emitting element 14. FIG. In order to avoid interference with the connector portion 32d, the connector portion 32d of the power supply attachment 30 is formed so as to protrude toward the reflector 16 on the rear side of the unit from the rear end position of the reflector 16. Moreover, the recess 22a2 formed in the upper surface 22a of the heat sink 22 can be made shallow. As a result, it is possible to effectively prevent deterioration of the heat dissipation function of the heat sink 22 due to the arrangement of the connector portion 32d inside the two fastening positions on the left and right.

Furthermore, in the present embodiment, the connector portion 32d of the power supply attachment 30 is formed at the center position of the two fastening positions on the left and right. 10 is used, it is possible to easily share the power supply attachment 30 between both lamp units 10 .

In this embodiment, the reflector 16 is fastened to the heat sink 22 at two left and right points, and the reflector 16 has a heat sink at a portion located on the rear side of the unit from the two right and left fastening positions. 22, the reflector 16 can be supported by the heat sink 22 by a three-point support structure, and the positioning accuracy of the reflector 16 can be improved.

Furthermore, in the present embodiment, contact portions 22d that contact the lens holder 24 are formed at the front end portions of the pair of left and right upward protruding surfaces 22a3 on the upper surface 22a of the heat sink 22. can be supported at four points, and the positioning accuracy of the projection lens 12 can be improved.

Further, in this embodiment, the light emitting element 14 is mounted on the upper surface 22a of the heat sink 22, and the light source support area 22a1 on which the light emitting element 14 is mounted on the upper surface 22a extends toward the rear of the unit together with its peripheral area. Since the lamp unit 10 is configured with an inclined surface inclined downward toward the lamp unit 10, the longitudinal length of the lamp unit 10 can be shortened by the amount of the inclination. Moreover, by adopting such a configuration, it is possible to increase the incidence efficiency of light emitted from the light emitting element 14 to the reflector 16 .

Furthermore, in this embodiment, the lens holder 24 is formed in a closed frame shape by the holder main body 24A, the pair of left and right arm portions 24B, and the connecting portion 24C. The positional accuracy of the pair of left and right screw insertion holes 24d can be improved.

In the above embodiment, the entire connector portion 32d of the power supply attachment 30 is positioned on the rear side of the unit relative to the rear end position of the reflector 16. It is also possible to employ a configuration positioned on the rear side of the unit.

In the above embodiment, the case where the lamp unit 10 is a projector-type lamp unit including the reflector 16 has been described, but the configuration of the above-described embodiment can also be applied to a parabola-type lamp unit or the like.

In the above embodiment, the lamp unit 10 is described as a vehicle-mounted lamp unit, but it can also be used for applications other than vehicle-mounted.

Next, a modification of the above embodiment will be described.

First, a first modified example of the above embodiment will be described.

FIG. 6 is a view, similar to FIG. 3, showing the essential parts of the lamp unit 110 according to this modified example.

As shown in the figure, the basic configuration of this modification is the same as that of the above-described embodiment, but the configuration of the power supply attachment 130 in this modification is partially different from that of the above-described embodiment.

That is, the power supply attachment 130 of this modification is also formed such that the connector portion 132d of the insulating member 132 extends to the rear side of the unit from the rear end position of the reflector 16. It is formed to protrude only upward (that is, protrude only to the reflector 16 side) on the rear side of the unit from the rear end position.

For this reason, the upper surface 122a of the heat sink 122 does not have the concave portion 22a2 formed to avoid interference with the connector portion 32d in the heat sink 22 of the above embodiment.

By adopting the configuration of this modified example, although the connector portion 132d is arranged inside the two fastening positions on the left and right between the power supply attachment 130 and the heat sink 122, the heat dissipation function of the heat sink 122 is lowered. It is possible to more effectively suppress the storage.

Next, the 2nd modification of the said embodiment is demonstrated.

FIG. 7 is a view, similar to FIG. 3, showing a main part of a lamp unit 210 according to this modified example.

As shown in the figure, the basic configuration of this modified example is the same as that of the above embodiment, but the configuration of the power supply attachment 230 in this modified example is partially different from that of the above embodiment.

That is, the power supply attachment 230 of this modification is also formed so that the connector portion 232d of the insulating member 232 extends to the rear side of the unit from the rear end position of the reflector 16, but the connector portion 232d is directed downward. It is formed so as to open.

For this reason, a notch portion 222e is formed in the rear portion of the heat sink 222 to avoid interference with the connector portion 232d.

By adopting the configuration of this modified example, the connection work of the connector of the power supply wiring to the connector portion 232d of the power supply attachment 230 is performed from below, so that the space for performing the connection work can be easily secured in the lamp chamber. can be secured to

The numerical values shown as the specifications in the above embodiment and its modification are merely examples, and it goes without saying that these values may be set to different values as appropriate.

Moreover, the present invention is not limited to the configurations described in the above embodiments and modifications thereof, and configurations with various other modifications can be employed.

Reference Signs List 10, 110, 210 lamp unit 12 projection lens 14 light emitting element 14a light emitting surface 16 reflector 16a reflecting surface 16b flange portion 16c engagement hole 16d, 24d screw insertion hole 16e, 22d contact portion 18 movable shade 18a upper edge 20 light source support member 20a terminal portion 22, 122, 222 heat sink 22a, 122a upper surface 22a1 light source support area 22a2 concave portion 22a3 upward projecting surface 22b, 24b positioning pin 22c heat radiation fin 24 lens holder 24A holder body 24B arm portion 24Ba rotation mounting surface 24C connecting portion 26 Pin 28 Actuator 30, 130, 230 Power supply attachment 32, 132, 232 Insulating member 32a Opening 32b Flange 32c Engaging hole 32d, 132d, 232d Connector 32d1 Rectangular hole 32d2 Recess 34 Busbar electrode 34a Terminal piece 34b Pressing piece 34c Terminal Pins 40, 42 Screw 100 Vehicle lamp 102 Lamp body 104 Translucent cover 222e Notch Ax Optical axis F Rear focus

Claims (6)

A lamp unit comprising: a light emitting element; a reflector that reflects light emitted from the light emitting element toward the front of the unit; and a heat sink that supports the light emitting element and the reflector,
A power supply attachment for supplying power to the light emitting element is attached to the heat sink,
The power supply attachment is fastened to the heat sink at two locations on the left and right of the power supply attachment,
A lamp unit according to claim 1, wherein a connector portion of the power supply attachment is formed so as to extend to a rear side of the unit from a rear end position of the reflector inside the two fastening positions on the left and right sides. 2. The lamp unit according to claim 1, wherein the connector portion is formed so as to open toward the rear of the unit. 3. The lamp unit according to claim 1, wherein the connector portion is formed so as to protrude toward the reflector on the rear side of the unit from the rear end position of the reflector. 4. The lamp unit according to claim 1, wherein the connector portion is formed at a central position between the two fastening positions on the left and right sides. The reflector is fastened to the heat sink at two points on the left and right sides of the reflector, and a contact portion that contacts the heat sink is located on the rear side of the unit from the two fastening positions on the left and right sides of the reflector. 5. The lamp unit according to any one of claims 1 to 4, characterized in that a is formed. The light emitting element is mounted on the upper surface of the heat sink,
The lamp unit according to any one of claims 1 to 5, wherein the top surface of the heat sink has an inclined surface in which a region on which the light emitting element is mounted is inclined downward toward the rear of the unit. .

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