CN212901305U - Lamp unit - Google Patents
Lamp unit Download PDFInfo
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- CN212901305U CN212901305U CN202020688745.2U CN202020688745U CN212901305U CN 212901305 U CN212901305 U CN 212901305U CN 202020688745 U CN202020688745 U CN 202020688745U CN 212901305 U CN212901305 U CN 212901305U
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- reflector
- lamp unit
- heat sink
- emitting element
- light emitting
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
The utility model relates to a lamp unit, even constitute in the lamp unit of light-emitting component and reflector supporting in the radiator and be installed in the radiator for the power supply annex, also can restrain the width size about lamp unit less. Connector sections (32d) of the power supply accessory (30) are configured to be arranged inside fastening positions on the left and right of the reflector (16) relative to the reflector (16) fastened to the heat sink (22) on the left and right. Thus, the lateral width of the power supply unit (30) can be reduced, and the reflector (16) can be easily supported with respect to the heat sink (22) without interfering with the connector section (32d) of the power supply unit (30). The two right and left fastening positions of the reflector (16) are set at positions overlapping the opening (32a) of the power supply accessory (30) in the front-rear direction of the lamp unit. Thus, the left-right width dimension of the reflector (16) is reduced.
Description
Technical Field
The utility model relates to a light emitting component and reflector support in lamps and lanterns unit of radiator.
Background
Conventionally, as a structure of a lamp unit including a light emitting element and a reflector for reflecting light emitted from the light emitting element toward a unit front side, a structure in which the light emitting element and the reflector are supported by a heat sink has been known.
As such a lamp unit, patent document 1 describes a structure in which a power supply accessory for supplying power to a light emitting element is attached to a heat sink. In this case, the power supply accessory includes a connector portion formed to surround an opening portion of the light emitting element and to accommodate a terminal portion electrically connected to an external power source, and the connector portion of the power supply accessory is formed at an end portion in the left-right direction of the power supply accessory.
On the other hand, in "patent document 2", as a lamp unit in which a light emitting element and a reflector are supported by a heat sink, a structure in which the reflector is fastened to the heat sink at both right and left positions of the reflector is described.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2014-197550
Patent document 2: japanese patent laid-open publication No. 2018-37274
SUMMERY OF THE UTILITY MODEL
Problem to be solved by the utility model
In the lamp unit described in the above-mentioned "patent document 1", since the connector portion of the power supply accessory is located at the end portion in the left-right direction of the power supply accessory, in the case where the reflector is configured to be fastened to the heat sink at both the left and right positions of the reflector as described in the above-mentioned "patent document 2", it is necessary to increase the left-right width dimension of the lamp 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 accessory.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a lamp unit in which, even when a power supply accessory is attached to a heat sink in a lamp unit in which a light emitting element and a reflector are supported by the heat sink, the lateral width of the lamp unit can be suppressed to be small.
Means for solving the problems
The utility model discloses a fastening position to the radiator to the reflector is implemented and is improved and is realized above-mentioned purpose.
That is, the lamp unit according to the present invention includes a light emitting element, a reflector for reflecting light emitted from the light emitting element toward the front of the lamp unit, and a heat sink for supporting the light emitting element and the reflector,
the reflector is fastened to the heat sink at both the left and right of the reflector,
a power supply accessory for supplying power to the light emitting element is mounted on the heat sink,
the power supply accessory includes an opening portion formed to surround the light emitting element, and a connector portion accommodating a terminal portion electrically connected to an external power source,
the connector portion of the power supply accessory is located inside the fastening position at both right and left of the reflector,
the reflector is fastened at two positions on the left and right sides at positions overlapping the opening of the power supply accessory in the front-rear direction of the lamp unit.
The "reflector" may be directly supported by the heat sink or may be supported by the heat sink via another member.
The specific fastening method of the "reflector" to the heat sink is not particularly limited, and for example, a screw connection, a caulking connection, or the like may be employed.
The "right and left fastening positions" are not particularly limited as long as they are set at positions overlapping the opening of the power supply accessory in the front-rear direction of the lamp unit.
The "connector portion" is not particularly limited in specific arrangement and structure as long as it is located inside the fastening positions on both the right and left sides of the reflector.
Effect of the utility model
The lamp unit according to the present invention is configured such that the power supply accessory is attached to the heat sink supporting the light emitting element and the reflector, and the reflector is fastened to the heat sink at both right and left positions thereof, but since the connector portion of the power supply accessory is located inside the fastening positions at both right and left positions of the reflector, the right and left width dimensions of the power supply accessory can be reduced as compared with the case where the connector portion is located at the end portion in the right and left direction in the power supply accessory as in the related art. Therefore, the reflector can be easily supported by the heat sink without interfering with the connector portion of the power supply accessory, and the lateral width of the lamp unit can be suppressed to be small.
In addition, in the lamp unit according to the present invention, since the fastening positions of the two right and left parts of the reflector are set to the positions overlapping the opening of the power feeding accessory in the front-rear direction of the lamp unit, the right and left width dimensions of the entire reflector including the flange portion for fastening to the heat sink as the structure of the reflector can be reduced, and thus the right and left width dimensions of the lamp unit can be further reduced.
As described above, according to the present invention, even in the lamp unit in which the light emitting element and the reflector are supported by the heat sink, the lateral width of the lamp unit can be reduced even if the power supply accessory is attached to the heat sink.
In the above configuration, when the power supply unit is configured such that the power supply unit is fastened to the heat sink at the two left and right positions, and the two left and right fastening positions of the reflector are set to be located forward of the lamp unit with respect to the two left and right fastening positions of the power supply unit, the power supply unit can be fastened to the heat sink without interfering with the fastening portion of the reflector to the heat sink.
In the above configuration, further, if the reflector is configured to include the first contact portion that contacts the heat sink at a portion located on the rear side of the lamp unit with respect to the two right and left fastening positions of the reflector, the reflector can be supported by the heat sink using the three-point support structure, and thus the positioning accuracy of the reflector can be improved.
In the above configuration, further, in addition to the configuration including the projection lens arranged on the front side of the light emitting element with respect to the lamp unit so as to allow the reflected light from the reflector to enter and the lens holder supporting the projection lens, if the configuration of the reflector includes the second contact portion contacting the lens holder at a position located on the front side of the lamp unit with respect to the two right and left fastening positions of the reflector, the positioning accuracy of the reflector can be further improved.
In the above configuration, further, in the case where the light emitting element is mounted on the upper surface of the heat sink, and the upper surface of the heat sink is configured to have an inclined surface in which the region on which the light emitting element is mounted and the region to which the reflector is fastened are inclined toward the rear of the lamp unit and toward the lower side, the front-rear length of the lamp unit can be shortened in accordance with the amount of inclination. In addition, with such a configuration, the efficiency of light emitted from the light emitting element entering the reflector can be improved.
Drawings
Fig. 1 is a side sectional view showing a vehicle lamp including a lamp unit according to an embodiment of the present invention.
Fig. 2 is a plan view showing the lamp unit.
Fig. 3 is a detailed view of section III of fig. 1.
Fig. 4 is a sagittal view of the direction IV of fig. 3.
Fig. 5 is a sagittal view of the V direction of fig. 4.
Fig. 6 is a view similar to fig. 4 showing a modification of the above embodiment.
Description of the reference numerals
10. 110: a lamp unit;
12: a projection lens;
14: a light emitting element;
14 a: a light emitting face;
16. 116: a reflector;
16 a: a reflective surface;
16b, 116 b: a flange portion;
16c, 116 c: a clamping hole;
16d, 24d, 116d, 124 d: inserting a screw into the through hole;
16e, 116 e: an abutting portion (first abutting portion);
18: a movable shade;
18 a: an upper end edge;
20: a light source supporting member;
20 a: a terminal portion;
22. 122: a heat sink;
22a, 122 a: an upper surface;
22a 1: a light source support region;
22a 2: a recess;
22a3, 122a 3: the upper protruding surface;
22b, 24b, 124 b: positioning pins;
22 c: a heat sink;
22 d: an abutting portion (second abutting portion);
24. 124: a lens holder;
24A: a holder body;
24B, 124B: an arm portion;
24Ba, 124 Ba: a carrying surface;
24C: a connecting portion;
26: a rotation pin;
28: an actuator;
30: a power supply accessory;
32: an insulating member;
32 a: an opening part;
32 b: a flange portion;
32c, the ratio of: a clamping hole;
32 d: a connector section;
32d 1: a rectangular hole;
32d 2: a recess;
34: a bus electrode;
34 a: a terminal piece;
34 b: pressing the sheet;
34 c: a terminal pin;
40. 42: a screw;
100: a vehicular lamp;
102: a lamp body;
104: a light-transmitting cover;
ax: an optical axis;
f: a back focal point.
Detailed Description
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 an embodiment of the present invention. Fig. 2 is a plan view showing the lamp unit 10.
In these figures, the direction indicated by X is the "cell front", the direction indicated by Y is the "left direction" (the "right direction" in the cell front perspective) orthogonal to the "cell front", and the direction indicated by Z is the "upper direction". The same applies to the other figures.
The vehicle lamp 100 is a headlamp provided at a front end portion of a vehicle, and is configured to accommodate the lamp unit 10 in a lamp chamber formed by a lamp body 102 and a translucent cover 104 in a state where an optical axis is adjusted so that a front-rear direction of the lamp unit 10 (i.e., a unit front-rear direction) coincides with a vehicle front-rear direction.
The lamp unit 10 includes a projection lens 12, a light emitting element 14 disposed on the unit rear side of a rear focal point F of the projection lens 12, a reflector 16 disposed so as to cover the light emitting element 14 from above and reflect light emitted from the light emitting element 14 toward the projection lens 12, and a movable light blocking member 18 disposed between the light emitting element 14 and the projection lens 12.
The projection lens 12 is a plano-convex aspherical lens whose front surface is a convex surface and whose rear surface is a flat surface, and has an optical axis Ax extending in the unit front-rear direction. The projection lens 12 projects a light source image formed on a rear focal plane, which is a focal plane including the rear focal point F, onto a virtual vertical screen in front of the lamp as a reverse image.
Fig. 3 is a detailed view of section III of fig. 1. In addition, fig. 4 is a sagittal view in the IV direction of fig. 3, and fig. 5 is a sagittal view in the V direction of fig. 4.
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 14 a. The light emitting element 14 is supported by a heat sink 22 via a light source support member 20 in a state where the light emitting surface 14a faces upward below the optical axis Ax.
The light source support region 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 peripheral region thereof. The light source support region 22a1 is formed of an inclined surface inclined downward toward the cell rear side together with the peripheral region thereof, and the light emitting surface 14a of the light emitting element 14 is arranged in a state of being inclined upward and rearward.
A power supply accessory 30 (to be described later) for supplying power to the light emitting element 14 is mounted on the upper surface 22a of the heat sink 22.
The reflecting surface 16a of the reflector 16 is formed of a curved surface of a substantially elliptical surface having the light emission center of the light emitting element 14 as a first focal point. The reflecting surface 16a is formed in an elliptical shape having a second focal point located slightly forward of the rear focal point F in a vertical cross-sectional shape along the major axis thereof, and is formed such that its eccentricity gradually increases from the vertical cross-section toward the horizontal cross-section. The reflector 16 is supported at both left and right sides thereof by heat sinks 22 (to be described later).
On the other hand, the projection lens 12 is supported by the 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 from both left and right side portions of the holder main body 24A toward the unit rear, and a coupling portion 24C for coupling rear end portions of the pair of left and right arm portions 24B. At this time, the pair of left and right arm portions 24B are formed so as to be bent toward the optical axis Ax at the rear end portions thereof, and the coupling portion 24C is formed so as to surround the reflector 16 in a substantially circular arc shape. Also, the lens holder 24 is attached to the heat sink 22 at portions near rear end portions of a pair of right and left arm portions 24B thereof (which will be described later).
As shown in fig. 1, the movable light-shielding member 18 is rotatably supported on the heat sink 22 below the optical axis Ax via a rotation pin 26 extending in the left-right direction. The movable shade 18 is formed to extend obliquely upward from its front end toward the unit rear, and its upper end edge 18a is formed to extend in the horizontal direction in a left-right step shape.
The movable light-shielding member 18 is movable by driving of an actuator 28 supported by the heat sink 22 to a light-shielding position (a position shown by a solid line in fig. 1) for shielding a part of the reflected light from the reflector 16 to the projection lens 12, and a light-shielding release position (a position shown by a two-dot chain line in fig. 1) for releasing the light shielding by rotating downward by a predetermined angle from the light-shielding position. The actuator 28 is fixed to the heat sink 22 by screwing, and is driven when an unillustrated beam switching switch is operated.
As shown in fig. 4, the light source support member 20 supporting the light emitting element 14 has a horizontally long rectangular outer shape in plan view, and a pair of left and right terminal portions 20a electrically connected to the cathode electrode and the anode electrode of the light emitting element 14 are arranged at positions on both left and right sides of the light emitting element 14 on the upper surface thereof.
The power feeding accessory 30 is an insert-molded product in which a pair of right and left bus bar electrodes 34 are embedded in an insulating member 32 in a state in which a part of each of the bus bar electrodes is exposed, the insulating member 32 being formed so as to surround the light source supporting member 20, and the bus bar electrodes 34 being used for electrical conduction with the light emitting element 14.
The insulating member 32 is a plate-like member having a horizontally long rectangular outer shape in a plan view, and has an opening 32a in the horizontally long rectangular shape formed at the center in the left-right direction.
The insulating member 32 includes a pair of left and right flange portions 32b projecting in the horizontal direction from both left and right side portions thereof, and is fixed to the upper surface 22a of the heat sink 22 by tightening the screws 40 in the respective flange portions 32 b. At this time, a pair of left and right positioning pins 22b are formed on the upper surface 22a of the heat sink 22, and engagement holes 32c that engage with the pair of left and right positioning pins 22b are formed in the pair of left and right flanges 32b of the insulating member 32, respectively. One of the pair of left and right engaging 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 bus bar electrodes 34 includes a pair of left and right terminal pieces 34a protruding toward the opening 32a, and are electrically connected to the light emitting diode 22 by coming into contact with the pair of left and right terminal portions 20a of the light source support member 20.
The pair of left and right bus bar electrodes 34 includes two pairs of front and rear pressing pieces 34b protruding toward the opening 32a, and these pressing pieces are configured to abut on the upper surface of the light source support member 20 so that the light emitting diode 22 is not separated from the heat sink 22 by vibration or the like.
At this time, each terminal piece 34a and each pressing piece 34b are configured as an elastic piece that elastically presses the light source support member 20 from the upper side.
The insulating member 32 includes a connector portion 32d protruding from the rear portion thereof toward the unit rear.
The connector portion 32d is formed to extend to the unit rear side from the rear end position of the reflector 16, and is opened toward the unit rear. At this time, the connector portion 32d is formed at the center position of the fastening position (i.e., the position directly below the optical axis Ax) of the insulating member 32 and the heat sink 22 at both right and left positions. The connector portion 32d is formed to extend upward and downward on both sides of the unit rear side from the rear end position of the reflector 16.
A rectangular hole 32d1 extending in the unit front-rear direction is formed in the upper wall portion of the connector portion 32d, and rectangular recesses 32d2 are formed in both right and left side wall portions of the connector portion 32 d.
In the internal space of the connector portion 32d, the terminal pins 34c of the pair of left and right bus bar electrodes 34 protrude toward the rear of the unit. The pair of left and right terminal pins 34c are each formed in a plate shape, and the plate surfaces thereof are arranged in the vertical direction inclined toward the unit rear side with respect to the vertical direction (i.e., in the second direction orthogonal to the first direction in which the pair of left and right terminal pins 34c are aligned). A connector (not shown) for a power supply wire is inserted into the internal space of the connector portion 32d, and the power supply accessory 30 and the power supply wire are electrically connected by being fitted into the rectangular hole 32d1 and the pair of left and right recesses 32d 2.
As shown in fig. 4, the reflector 16 includes a pair of left and right flange portions 16b projecting in a flat plate shape in the horizontal direction from the lower end positions of the left and right side portions thereof, and the flange portions 16b are fixed to the upper surface 22a of the heat sink 22 together with the lens holder 24 by tightening screws 42.
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 upper protruding surfaces 22a3 that protrude upward from the other portions of the upper surface 22a as shown in fig. 5. Further, a pair of left and right mounting surfaces 24Ba for mounting the pair of left and right flange portions 16B of the reflector 16 are formed in the lens holder 24 at positions near the rear end portions of the pair of left and right arm portions 24B. The pair of left and right placement surfaces 24Ba are inclined surfaces inclined downward toward the unit rear, and the inclination angle thereof is set to the same value as the inclination angle of the upper surface 22a (including the pair of left and right upper protruding surfaces 22a3) of the heat sink 22.
A pair of left and right positioning pins 24b are formed on the pair of left and right mounting surfaces 24 Ba. On the other hand, engagement holes 16c for engaging with the pair of left and right positioning pins 24b are formed in the pair of left and right flange portions 16b of the reflector 16, respectively. One of the pair of left and right engaging holes 16c is formed in a circular shape, and the other is formed in a horizontally long circular shape.
A pair of right and left screw insertion holes 16d are formed in the pair of right and left flange portions 16b of the reflector 16, and a pair of right and left screw insertion holes 24d are formed in the pair of right and left mounting surfaces 24Ba of the lens holder 24.
The fastening positions of the reflector 16 at both right and left positions are set to positions near the rear end of the reflector 16. Specifically, the positions of the screw insertion holes 16d formed in the pair of left and right flange portions 16b are set to positions overlapping the opening portions 32a of the insulating member 32 in the unit front-rear direction, and at this time, the pair of left and right screw insertion holes 16d and the opening portions 32a partially overlap in the unit front-rear direction.
Since the reflecting surface 16a of the reflector 16 is formed of a curved surface having a substantially elliptical surface shape as described above, the distance between the lower end positions of the left and right side portions of the reflector 16 in the left-right direction decreases as the unit goes rearward. Therefore, the fastening positions of the reflector 16 at both right and left positions are set at positions near the rear end portion of the reflector 16, and the distance between the pair of right and left flange portions 16b becomes narrower.
As shown in fig. 4 and 5, a contact portion 16e that contacts the heat sink 22 is formed at a portion of the reflector 16 located on the unit rear side of the two right and left fastening positions with respect to the heat sink 22. The contact portion 16e is formed as a protrusion extending rearward from the lower end of the reflector 16 and then extending downward in the vicinity of the left side of the recess 22a2 of the heat sink 22, and is configured to contact the upper surface 22a of the heat sink 22.
As shown in fig. 1, contact portions 22d that contact the lens holder 24 are formed at the distal ends of the pair of left and right upper protruding surfaces 22a3 on the upper surface 22a of the heat sink 22.
The pair of left and right contact portions 22d are formed as protrusions extending upward, and configured to contact the lower surfaces of the pair of left and right arm portions 24B of the lens holder 24.
Next, the operation of the present embodiment will be explained.
In the lamp unit 10 according to the present embodiment, the power feeding accessory 30 is attached to the heat sink 22 that supports the light emitting element 14 and the reflector 16, and at this time, the reflector 16 is fastened to the heat sink 22 at both right and left positions, but the connector portions 32d of the insulating member 32 of the power feeding accessory 30 are located inside the fastening positions at both right and left positions of the reflector 16, and therefore, the right and left width dimensions of the power feeding accessory 30 can be reduced as compared with a case where the connector portions 32d are located at the end portions in the right and left direction in the power feeding accessory 30 as in the related art. Therefore, the reflector 16 can be easily supported by the heat sink 22 without interfering with the connector portion 32d of the power supply accessory 30, and the lateral width of the lamp unit 10 can be suppressed to be small.
In addition, in the lamp unit 10 according to the present embodiment, since the fastening positions of the reflector 16 at both right and left positions are set to positions overlapping the opening 32a of the power feeding attachment 30 in the unit front-rear direction, the right-left width dimension of the entire reflector 16 including the pair of right and left flange portions 16b can be reduced as the configuration of the reflector 16, and thus the right-left width dimension of the lamp unit 10 can be further suppressed to be small.
As described above, according to the present embodiment, even if the power feeding attachment 30 is attached to the heat sink 22 in the lamp unit 10 in which the light emitting element and the reflector 16 are supported by the heat sink 22, the lateral width of the lamp unit 10 can be suppressed to be small.
In the present embodiment, the power feeding accessory 30 is fastened to the heat sink 22 at two left and right positions, and the two left and right fastening positions of the reflector 16 are set on the unit front side of the two left and right fastening positions of the power feeding accessory 30, so that the power feeding accessory 30 can be fastened to the heat sink 22 without interfering with the fastening portion of the reflector 16 to the heat sink 22.
In the present embodiment, since the reflector 16 is configured to include the contact portion 16e (first contact portion) that contacts the heat sink 22 at a portion located on the cell rear side of the two right and left fastening positions, the reflector 16 can be supported by the heat sink 22 using the three-point support structure, and thus the positioning accuracy of the reflector 16 can be improved.
Further, in the present embodiment, since the projection lens 12 configured to allow the reflected light from the reflector 16 to enter the projection lens 16 on the cell front side of the light emitting element 14 and the lens holder 24 configured to support the projection lens 12 are provided, and the reflector 16 is configured to include the abutting portion 22d (second abutting portion) abutting against the lens holder 24 at a position located on the cell front side of the fastening positions on both the left and right sides of the reflector 16, the positioning accuracy of the reflector 16 can be further improved.
In the present embodiment, the light emitting element 14 is configured to be mounted on the upper surface 22a of the heat sink 22, and the light source support region 22a1 on which the light emitting element 14 is mounted on the upper surface 22a is configured to be an inclined surface that is inclined downward toward the rear of the unit together with the peripheral region thereof, so that the front-rear length of the lamp unit 10 can be shortened in accordance with the amount of inclination. Further, by adopting such a configuration, the incidence efficiency of the light emitted from the light emitting element 14 to the reflector 16 can be improved.
In the above-described embodiment, the description has been made based on the configuration in which the connector portion 32d of the insulating member 32 of the power feeding accessory 30 is formed at the center position of the opening portion 32a in the left-right direction, but if it is located inside the two fastening positions on the left and right of the reflector 16, even if it is formed at a position displaced in the left-right direction from the center position of the opening portion 32a, the same operational effects as those in the above-described embodiment can be obtained.
In the above embodiment, the case where the lamp unit 10 is a projection-type lamp unit including the reflector 16 has been described, but the configuration of the above embodiment may be adopted for a parabolic lamp unit or the like.
In the above embodiment, the lamp unit 10 is described as an example of a lamp unit for vehicle mounting, but may be used for applications other than vehicle mounting.
Next, a modified example of the above embodiment will be explained.
Fig. 6 is a view similar to fig. 4, showing a main part of the lamp unit 110 according to the present modification.
As shown in the drawing, the basic configuration of the present modification is the same as that of the above-described embodiment, but the configuration of the pair of left and right flange portions 116b in the reflector 116 in the present modification is partially different from that of the above-described embodiment, and the configuration of the lens holder 124 and the heat sink 122 is also partially different from that of the above-described embodiment.
That is, in the reflector 116 of the present modification, a pair of left and right flange portions 116b are formed to protrude horizontally in a flat plate shape from the lower end positions of the left and right side portions of the reflector 116, and each flange portion 116b is fixed to the upper surface 122a of the heat sink 122 together with the lens holder 124 by tightening the screw 42, but the formation positions of the pair of left and right flange portions 116b are set to the unit rear side than in the case of the above-described embodiment.
Specifically, although the screw insertion holes 116d formed in the pair of left and right flange portions 116b are set to positions overlapping the opening 32a of the insulating member 32 in the unit front-rear direction in the present modification, the pair of left and right screw insertion holes 116d and the opening 32a of the insulating member 32 completely overlap in the unit front-rear direction in the present modification.
At this time, since the distance in the left-right direction between the lower end positions of the left and right side portions of the reflector 116 becomes smaller toward the unit rear, the distance between the pair of left and right flange portions 116b is also smaller than in the case of the above-described embodiment.
Accordingly, the positions of the pair of right and left screw insertion holes 116d formed in the pair of right and left flange portions 116b of the reflector 116 are displaced in the right and left direction toward the center as compared with the case of the above-described embodiment, and the positions of the pair of right and left screw insertion holes 124d formed in the pair of right and left mounting surfaces 124Ba of the lens holder 124 are displaced in the right and left direction toward the center as compared with the case of the above-described embodiment.
Similarly, the positions of the pair of left and right positioning pins 124b formed on the pair of left and right placement surfaces 124Ba and the engagement holes 116c engaged with the pair of left and right positioning pins 124b formed on the pair of left and right flange portions 116b are displaced in the direction closer to the center in the left-right direction than in the case of the above-described embodiment.
Further, as the pair of left and right flange portions 116B are displaced in the left-right direction toward the center, the lens holder 124 also displaces the positions of the pair of left and right arm portions 124B in the left-right direction toward the center as compared with the case of the above-described embodiment, and the heat sink 122 also displaces the positions of the outer side surfaces of the pair of left and right upper protruding surfaces 122a3 in the left-right direction toward the center as compared with the case of the above-described embodiment.
Even in the case of adopting the configuration of the present modification, substantially the same operational effects as those in the case of the above-described embodiment can be obtained.
Further, with the configuration of the present modification, the lateral width dimension of the lamp unit 110 can be further reduced as compared with the case of the above-described embodiment.
The numerical values shown as elements in the above embodiments and modifications thereof are merely examples, and it is needless to say that these elements may be set to different values as appropriate.
The present invention is not limited to the configurations described in the above embodiments and the modifications thereof, and various modifications other than the above may be added.
Claims (5)
1. A lamp unit including a light emitting element, a reflector for reflecting light emitted from the light emitting element toward the front of the lamp unit, and a heat sink for supporting the light emitting element and the reflector,
the reflector is fastened to the heat sink at both the left and right of the reflector,
a power supply accessory for supplying power to the light emitting element is mounted on the heat sink,
the power supply accessory includes an opening portion formed to surround the light emitting element, and a connector portion accommodating a terminal portion electrically connected to an external power source,
the connector portion of the power supply accessory is located inside the fastening position at both right and left of the reflector,
the reflector is fastened at two positions on the left and right sides at positions overlapping the opening of the power supply accessory in the front-rear direction of the lamp unit.
2. The lamp unit of claim 1, wherein the power accessory is fastened to the heat sink at both the left and right of the power accessory,
the reflector is set at two fastening positions on the left and right sides of the lamp unit in front of the two fastening positions on the left and right sides of the power supply accessory.
3. The lamp unit according to claim 1 or 2, wherein the reflector includes a first contact portion that contacts the heat sink at a portion located on a rear side of the lamp unit with respect to both right and left fastening positions of the reflector.
4. The lamp unit according to claim 1 or 2, wherein the lamp unit includes a projection lens configured to allow incident light reflected from the reflector to enter and a lens holder configured to support the projection lens, on a front side of the lamp unit with respect to the light emitting element,
the reflector includes a second contact portion that contacts the lens holder at a position located on the front side of the lamp unit with respect to two right and left fastening positions of the reflector.
5. A lamp unit as claimed in claim 1 or 2, characterized in that the light-emitting element is carried on an upper surface of the heat sink,
the upper surface of the heat sink is formed by a region on which the light emitting element is mounted and an inclined surface in which a region to which the reflector is fastened is inclined downward toward the rear of the lamp unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-087822 | 2019-05-07 | ||
| JP2019087822A JP7221784B2 (en) | 2019-05-07 | 2019-05-07 | lighting unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212901305U true CN212901305U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020688745.2U Active CN212901305U (en) | 2019-05-07 | 2020-04-29 | Lamp unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7221784B2 (en) |
| CN (1) | CN212901305U (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016139514A (en) * | 2015-01-27 | 2016-08-04 | 株式会社小糸製作所 | Electric power supply attachment, light source module and vehicular lighting unit |
| JP2017212052A (en) * | 2016-05-23 | 2017-11-30 | 市光工業株式会社 | Vehicle lamp fitting and manufacturing method of the same |
-
2019
- 2019-05-07 JP JP2019087822A patent/JP7221784B2/en active Active
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2020
- 2020-04-29 CN CN202020688745.2U patent/CN212901305U/en active Active
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| Publication number | Publication date |
|---|---|
| JP7221784B2 (en) | 2023-02-14 |
| JP2020184447A (en) | 2020-11-12 |
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