CN112212289B - Light source unit and vehicle lamp - Google Patents

Light source unit and vehicle lamp Download PDF

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Publication number
CN112212289B
CN112212289B CN202010650360.1A CN202010650360A CN112212289B CN 112212289 B CN112212289 B CN 112212289B CN 202010650360 A CN202010650360 A CN 202010650360A CN 112212289 B CN112212289 B CN 112212289B
Authority
CN
China
Prior art keywords
metal plate
emitting element
light emitting
power supply
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010650360.1A
Other languages
Chinese (zh)
Other versions
CN112212289A (en
Inventor
金森昭贵
松永崇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2020024320A external-priority patent/JP2021012866A/en
Application filed by Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Publication of CN112212289A publication Critical patent/CN112212289A/en
Application granted granted Critical
Publication of CN112212289B publication Critical patent/CN112212289B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/87—Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The invention improves the freedom of shape of a light control member and the freedom of arrangement of a connector in a light source unit in which a light emitting element and a power supply accessory are supported by a metal plate. The invention relates to a light source unit, which is composed of a power supply part (50A) which is abutted with a light emitting element (40) and supplies power to the light emitting element, a connector part (50B) which is electrically connected with an external power supply, and an intermediate part (50C) which is positioned between the power supply part and the connector part as a power supply accessory (50), wherein the power supply part is supported on a first plate surface (60A) of a metal plate (60) together with the light emitting element, and the connector part is formed to be opened in a space (S2) on the side of a second plate surface (60B) of the metal plate. The reflector (70) can be easily disposed in a free layout in a space (S1) on the first plate surface side of the metal plate, and the connector portion of the power supply accessory can be disposed in a free opening-facing state in a space on the second plate surface side of the metal plate.

Description

Light source unit and vehicle lamp
Technical Field
The present invention relates to a light source unit that supports a light emitting element and a power feeding accessory on a metal plate, and a vehicle lamp including the light source unit.
Background
Conventionally, as a light source unit of a vehicle lamp or the like, a light source unit including a light emitting element and a power supply accessory for supplying power to the light emitting element is known.
In general, as described in "patent document 1", for example, the power supply accessory is configured to include a power supply portion that is in contact with and supplies power to the light emitting element, a connector portion that is electrically connected to an external power supply, and an intermediate portion located therebetween.
In patent document 1, as a structure of a light source unit, a structure in which a light emitting element and a power feeding accessory are supported by a heat sink manufactured by die casting is described.
On the other hand, patent document 2 describes a structure in which a light emitting element and a power feeding accessory are supported by a metal plate as a structure of a light source unit. The power feeding accessory described in "patent document 2" is supported on the lower surface of the metal plate together with the light emitting element, and the connector portion is formed to be open in a space on the lower surface side of the metal plate.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open publication No. 2014-197550
Patent document 2: japanese patent laid-open publication No. 2018-92847
Disclosure of Invention
Problems to be solved by the invention
When the light emission output of the light source unit is relatively small, as described in the above-described "patent document 2", the heat radiation function as the light source unit can be ensured even if a metal plate is used instead of the heat sink manufactured by die casting.
However, in the light source unit described in the above-mentioned "patent document 2", the connector portion of the power feeding accessory is formed to be open in a space on the lower surface side (i.e., the same side as the light emitting element) of the metal plate, and therefore there is a problem as follows.
That is, in the vehicle lamp described in the above-mentioned "patent document 2", the reflector disposed below the light source unit is configured to reflect the light emitted from the light emitting element of the light source unit toward the front of the lamp, but in this case, it is necessary to consider that the reflector does not interfere with the connector portion of the power feeding accessory.
Therefore, in such a vehicle lamp, the degree of freedom in the shape of the light control member such as a reflector that controls the light from the light emitting element and the degree of freedom in the arrangement of the connector portion are reduced.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a light source unit capable of improving the degree of freedom in the shape of a light control member and the degree of freedom in the arrangement of a connector portion in a light source unit in which a light emitting element and a power feeding attachment are supported by a metal plate, and a vehicle lamp including the light source unit.
Means for solving the problems
The invention realizes the aim by researching and developing the structure of the power supply accessory.
That is, a light source unit according to the present invention includes a light emitting element, a power supply attachment for supplying power to the light emitting element, and a metal plate for supporting the light emitting element and the power supply attachment,
the light emitting element is supported on the first plate surface of the metal plate,
the power supply accessory comprises a power supply part which is abutted against the light emitting element and supplies power to the light emitting element, a connector part which is electrically connected with an external power supply, and an intermediate part which is positioned between the power supply part and the connector part,
the power supply part is supported on the first plate surface of the metal plate,
the connector portion is formed to be open in a space on the second plate surface side of the metal plate.
The specific shape of the "metal plate" is not particularly limited, and may be, for example, a flat plate shape alone, or bending, cutting, standing, or the like may be performed in a region other than the region supporting the light emitting element and the power feeding accessory.
The material of the "metal plate" is not particularly limited, and for example, an aluminum plate, a copper plate, or the like can be used.
The direction in which the "metal plate" is disposed is not particularly limited.
The specific shape, direction of the opening, and other specific structures of the connector portion are not particularly limited as long as the connector portion is formed as a space opening on the second plate surface side of the metal plate.
On the other hand, the vehicle lamp according to the present invention includes the light source unit described above, and is characterized in that,
the vehicle lamp includes a reflector for reflecting light emitted from the light emitting element of the light source unit toward the front of the lamp,
the reflector is disposed below the light source unit,
the light source unit is supported by the reflector at the metal plate in a state that a first plate surface of the metal plate faces downward.
Effects of the invention
The light source unit according to the present invention is configured to include a power supply portion that is in contact with the light emitting element and supplies power thereto, a connector portion that is electrically connected to an external power supply, and an intermediate portion therebetween as a power supply attachment for supplying power to the light emitting element, but the power supply portion of the power supply attachment is supported by the first plate surface of the metal plate together with the light emitting element, and the connector portion of the power supply attachment is formed to be open in a space on the second plate surface side of the metal plate, whereby the following operational effects can be obtained.
That is, the light control member such as a reflector can be easily arranged in a free layout in the space on the first plate surface side of the metal plate. Further, the connector portion of the power supply accessory can be easily disposed in the space on the second plate surface side of the metal plate in a state of being free to face the opening. Thus, the degree of freedom in the shape of the light control member and the degree of freedom in the arrangement of the connector portion can be improved.
As described above, according to the present invention, in the light source unit in which the light emitting element and the power feeding attachment are supported by the metal plate, the degree of freedom in the shape of the light control member and the degree of freedom in the arrangement of the connector portion can be improved.
In addition to the above-described configuration, if the metal plate is further formed with an opening, and the intermediate portion thereof is formed as a power feeding attachment so as to extend through the opening, the power feeding attachment can be formed in a compact configuration. In addition, by adopting such a structure, the metal plate is disposed over a relatively large range in the periphery of the light emitting element, so that the heat radiation function of the light source unit can be improved.
In addition to the above configuration, if the light emitting element is further configured to be placed on the first plate surface of the metal plate with the heat conductive grease interposed therebetween, the protruding portions for positioning the light emitting element are formed in the first plate surface of the metal plate at a plurality of portions surrounding the placement area for placing the light emitting element, respectively, and the light emitting element is configured to be pressed against the metal plate by the power feeding attachment in a state in which the plurality of protruding portions are positioned in the placement area, the following operational effects can be obtained.
That is, the light-emitting element can be supported on the metal plate without using an adhesive. Therefore, a step of applying an adhesive is not required, and a step of curing the adhesive while maintaining the state of positioning the light emitting element is also not required, so that the working process can be simplified.
In the case of adopting such a configuration, if the portion of the front end portion of each protrusion on the mounting region side is chamfered, the operation of mounting the light emitting element on the mounting region can be smoothly performed.
In addition, in the case of adopting such a configuration, if the recessed portion is formed in the portion adjacent to each of the protruding portions in the mounting region, the following operational effects can be obtained.
That is, since the corner R is inevitably formed at the connection portion of each protrusion and the first plate surface of the metal plate, if the recess is not formed, the light emitting element may abut against the connection portion of the metal plate, and thus the light emitting element may not be accurately placed in the placement region.
In contrast, by forming the recessed portions in the mounting region at portions adjacent to the respective protruding portions, the light emitting element can be placed accurately in the mounting region without abutting the connecting portion of the metal plate.
In addition to the above-described configuration, if the light emitting element is further configured to be placed on the first plate surface of the metal plate with the heat conductive grease interposed therebetween, and the first plate surface of the metal plate is provided with the protrusions for positioning the light emitting element in the desired direction at the two portions surrounding the placement area for placing the light emitting element, and the light emitting element is further configured to be pressed against the metal plate by the power feeding attachment, and the power feeding attachment is provided with the urging piece for urging the light emitting element in the desired direction by contact with the light emitting element, the following operational effects can be obtained.
That is, the light-emitting element can be supported on the metal plate without using an adhesive. Therefore, a step of applying an adhesive is not required, and a step of curing the adhesive while maintaining the state of positioning the light emitting element is also not required, so that the working process can be simplified. Further, the light emitting element can be easily positioned in the mounting region.
In addition to the above-described structure, if the power feeding attachment is further engaged with the metal plate to support the power feeding attachment to the metal plate, the following operational effects can be obtained.
That is, since fixation by screw tightening is not required, the number of components can be reduced and the operation process can be simplified. In addition, the light emitted from the element can be shielded from the light by the screw head protruding from the power feeding attachment.
In the case of adopting such a configuration, if the power supply attachment is formed with a plurality of engaging pieces and the metal plate is formed with a plurality of engaging holes, and the front end portions of the engaging pieces are engaged with the metal plate in the state of being inserted into the engaging holes as the engaging pieces, the power supply attachment can be engaged with the metal plate by a simple configuration, and the power supply attachment can be easily positioned in the plane vertical direction of the metal plate.
In this case, if the engagement piece is formed with an abutting portion that abuts against the inner wall surface of the engagement hole in a state of being inserted into the engagement hole, the power feeding attachment can be easily positioned in the planar direction of the metal plate even in a state in which the power feeding attachment is engaged with the metal plate.
Further, if the engagement between the power feeding accessory and the metal plate is performed by caulking and fixing the metal plate to the power feeding accessory, the power feeding accessory can be easily positioned in the plane-perpendicular direction and the plane-along direction of the metal plate.
In addition to the above-described structure, if the first plate surface of the metal plate is further provided with a seating portion, and the mounting region for mounting the light-emitting element is positioned on the seating portion in the first plate surface of the metal plate, the following operational effects can be obtained.
That is, even if the wall thickness of the power feeding accessory is increased by the height of the pedestal portion, the light emitted from the light emitting element is not blocked by the power feeding accessory, and thus the power feeding accessory can be easily manufactured. In addition, even when the structure is such that the power feeding attachment is supported by screw fastening, the light emitted from the light emitting element can be made difficult to be shielded by the screw head protruding from the power feeding attachment.
On the other hand, the vehicle lamp according to the present invention is configured to have a reflector for reflecting light emitted from the light emitting element of the light source unit toward the front of the lamp as the vehicle lamp including the light source unit, and in this case, the reflector is disposed below the light source unit, and the light source unit is supported by the reflector at the metal plate in a state where the first plate surface of the metal plate faces downward, so that the following operational effects can be obtained.
That is, the light source unit is disposed with the second plate surface of the metal plate facing upward, so that the operation of connecting the connector on the external power supply side to the connector portion of the power supply accessory can be easily performed.
In addition to the above-described configuration, if the plurality of sets of light source units and reflectors are further arranged in a state of being aligned in the vehicle width direction, the luminance required as the irradiation light from the vehicle lamp can be easily ensured even if the light emission output of each set of light source units is reduced, and therefore the necessary heat radiation function can be easily ensured.
In addition to the above-described configuration, if the light source unit is further configured such that the opening portion formed in the metal plate is located on the lamp rear side of the light emitting element and the connector portion is opened toward the lamp rear side, the operation of connecting the connector on the external power supply side to the connector portion can be more easily performed.
Drawings
Fig. 1 is a top cross-sectional view showing a vehicle lamp including a light source unit according to an embodiment of the present invention.
Fig. 2 is a sectional view taken along line II-II of fig. 1.
Fig. 3 is a detailed view of the main part of fig. 2.
Fig. 4 is an IV-direction view of fig. 3 showing the light source unit described above in isolation.
Fig. 5 is a view similar to fig. 3, showing the operation of the above embodiment in comparison with the comparative example.
Fig. 6 is a view similar to fig. 3 showing a first modification of the above embodiment.
Fig. 7 is the same view as fig. 3 showing a second modification and a third modification of the above embodiment.
Fig. 8 is a view similar to fig. 3 showing a fourth modification of the above embodiment.
Fig. 9 is a direction IX view of fig. 8.
Fig. 10 is an X-X sectional view of fig. 8.
Fig. 11 is a detailed view of the main part of fig. 8.
Fig. 12 is a detailed view of the main part of fig. 9.
Fig. 13 is a perspective view showing the assembly of the light source unit in the fourth modification.
Fig. 14 is a view similar to fig. 12 showing a fifth modification of the above embodiment.
Fig. 15 is a view for explaining the operation of the fifth modification, where (a) in fig. 15 is the same as fig. 14, (b) in fig. 15 is a sectional view taken along line b-b of (a) in fig. 15, and (c) in fig. 15 is a sectional view taken along line c-c of (a) in fig. 15.
Fig. 16 is a diagram showing a state in which the sixth modification of the above embodiment is inverted from the state shown in fig. 10.
Fig. 17 is a view similar to fig. 16 showing a seventh modification of the above embodiment.
Fig. 18 is a view similar to fig. 16 showing an eighth modification of the above embodiment.
Fig. 19 is a view similar to fig. 10 showing a ninth to eleventh modification of the above embodiment.
Description of the reference numerals
10: a lamp for a vehicle;
12: a lamp body;
14: a light-transmitting cover;
20A, 20B, 20C: a lamp unit;
30. 130, 230, 330: a light source unit;
40: a light emitting element;
40A: an element body;
40B: a main body supporting part;
40a: a light emitting surface;
40b: a terminal portion;
50. 250, 350: a power supply accessory;
50A, 250A, 350A: a power supply unit;
50B, 250B, 350B: a connector section;
50C, 250C, 350C: an intermediate portion;
52: an insulating member;
52A: the power supply part forms an area;
52B: the connector portion constitutes a region;
52C: the middle part constitutes a region;
52a: an opening portion;
52b: a flange portion;
52c: a positioning pin;
52d: a rectangular hole;
52e: a concave portion;
52f: a screw insertion hole;
54: a bus electrode;
54a: a terminal plate;
54b: pressing the sheet;
54c: a terminal pin;
56: a screw;
60. 160, 360: a metal plate;
60a, 160a, 360a: a first panel;
60b, 160b, 360b: a second panel;
60c, 360c: an opening portion;
60d: an insertion hole;
60e: a clamping hole;
60f: a threaded hole;
70: a reflector;
70a: a reflecting surface;
70s: a reflective element;
72: a light source support section;
72a: riveting pins;
80: a connector on the external power supply side;
160d: a rear end portion;
160e: a lower extension;
s1: a space on the first plate surface side;
s2: a space on the second plate surface side;
620A: a lamp unit;
630: a light source unit;
640: a light emitting element;
640A: an element body;
640B: a main body supporting part;
640a: a light emitting surface;
640b: a terminal portion;
642: heat conducting grease;
650. 750, 850, 950, 1050: a power supply accessory;
650A: a power supply unit;
650B: a connector section;
650C: an intermediate portion;
652. 752, 852, 952, 1052: an insulating member;
652A, 752A: the power supply part forms an area;
652B: the connector portion constitutes a region;
652C: the middle part constitutes a region;
652a, 752a: an opening portion;
652b: a flange portion;
652c, 852c, 952c: a positioning pin;
652d: a rectangular hole;
652e: a concave portion;
652f: a screw insertion hole;
654: a bus electrode;
654a: a terminal plate;
654c: a terminal pin;
656: a screw;
660. 760, 860, 960, 1060, 1160, 1260, 1360: a metal plate;
660a, 760a, 860a, 960a, 1060a, 1160a, 1260a, 1360a: a first panel;
660b, 860b, 960b, 1060b, 1160b, 1260b, 1360b: a second panel;
660c: an opening portion;
660d: a rear end portion;
660e: a lower extension;
660f: a threaded hole;
660g, 760g: a protruding portion;
660g1: chamfering;
660h: a concave portion;
660i, 760i: a recessed portion;
660j: an insertion hole;
660k, 860k, 960k, 1052k: a clamping hole;
660m: a concave portion;
670: a reflector;
670a: a reflecting surface;
672: a light source support section;
672a: riveting pins;
752g, 752h: a force application sheet;
752g1, 752h1: an inclined surface;
754: a bus electrode;
852i: a through hole;
852j, 952j: a clamping piece;
852j1, 952j1: a shaft portion;
852j2, 952j2: a turn-back part;
860n, 960n: a clamping hole;
952j3: an abutting portion;
1000: a clamp for riveting;
1052k1: chamfering;
1060p: a burring part;
1060p1: a front end portion;
1160q, 1360q: a base portion;
1160r: a concave portion;
1262: a heat sink;
1360s: a planar portion;
a: a mounting area.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 is a top cross-sectional view showing a vehicle lamp 10 including a light source unit 30 according to an embodiment of the present invention, and fig. 2 is a cross-sectional view taken along line II-II of fig. 1.
In fig. 1 and 2, the direction indicated by X is "front of the lamp", the direction indicated by Y is "left direction" orthogonal to "front of the lamp" (right direction in the front view of the lamp), and the direction indicated by Z is "up direction". The same applies to the drawings other than fig. 1 and 2.
As shown in fig. 1 and 2, the vehicle lamp 10 according to the present embodiment is a headlight provided at a right front end portion of a vehicle, and is configured such that three lamp units 20A, 20B, and 20C are assembled in a state of being aligned in a vehicle width direction in a lamp room formed by a lamp body 12 and a transparent translucent cover 14 attached to a front end opening portion of the lamp body 12.
Each of the lamp units 20A to 20C has a structure including a light source unit 30 having a light emitting element 40 as a light source, and a reflector 70 disposed below the light source unit 30.
The light source unit 30 is arranged in a state in which the light emitting surface 40a of the light emitting element 40 faces downward.
The reflector 70 includes a reflecting surface 70a formed with a plurality of reflecting elements 70s, and the reflecting elements 70s reflect the light emitted from the light emitting element 40 toward the front of the lamp.
A light source support portion 72 that supports the light source unit 30 is formed at an upper end portion of the reflector 70. Further, the light source unit 30 supported by the light source support portion 72 is connected to the external power source side connector 80 from the rear side of the lamp, whereby power is supplied to the light source unit 30.
The surface shapes of the reflection elements 70s constituting the reflection surface 70A of the reflector 70 are different from each other in the three lamp units 20A to 20C, but the other configurations are the same. The reflectors 70 of the three lamp units 20A to 20C are made of resin members and are integrally formed with each other.
The vehicle lamp 10 according to the present embodiment is configured to form a desired light distribution pattern (for example, a low beam light distribution pattern) by the irradiation light from the three lamp units 20A to 20C.
Fig. 3 is a detailed view of the main part of fig. 2. Fig. 4 is an IV-direction view of fig. 3 showing the light source unit 30 alone.
As shown in fig. 3 and 4, the light source unit 30 is configured such that the light emitting element 40 and the power supply attachment 50 for supplying power to the light emitting element 40 are supported by the metal plate 60.
The metal plate 60 is an aluminum plate having a constant plate thickness, and is disposed to extend along a horizontal plane. The metal plate 60 has a rectangular outer shape long in the front-rear direction of the lamp in a plan view.
The light emitting element 40 is a white light emitting diode, and a light emitting surface 40a thereof is formed in a laterally long rectangular shape. The light-emitting element 40 has a structure in which an element body 40A having a light-emitting surface 40A is supported by a body support portion 40B, and is supported by a first plate surface 60A which is a lower surface of a metal plate 60 at the body support portion 40B. The main body support portion 40B is fixed to the first plate surface 60a by, for example, an adhesive or the like.
The main body support portion 40B has a rectangular outer shape in a horizontal direction in a plan view, and a pair of right and left terminal portions 40B electrically connected to the cathode electrode and the anode electrode of the element main body 40A are disposed at positions on the right and left sides of the light-emitting element 40 on the lower surface thereof.
In the metal plate 60, an opening 60c is formed at a position adjacent to the lamp rear side where the light emitting element 40 is supported. The opening 60c has a rectangular inner peripheral surface shape.
The power supply attachment 50 includes a power supply portion 50A that is in contact with and supplies power to the light emitting element 40, a connector portion 50B that is electrically connected to an external power supply, and an intermediate portion 50C that is located between the power supply portion 50A and the connector portion 50B.
At this time, the power supply portion 50A is supported by the first plate surface 60A of the metal plate 60. The intermediate portion 50C is formed to extend through the opening 60C of the metal plate 60. Further, the connector portion 50B is formed to be opened in a space S2 on the second plate surface 60B side, which is the upper surface of the metal plate 60.
Next, a specific structure of the power supply accessory 50 will be described.
The power supply attachment 50 is configured as an insert molding in which a pair of right and left bus bar electrodes 54 electrically connected to the light emitting element 40 are embedded in an insulating member 52 formed so as to surround the light emitting element 40 in a state in which a part thereof is exposed.
The insulating member 52 is formed to extend in a flat plate shape along a horizontal plane in the power supply portion formation region 52A located in the power supply portion 50A, and has an outer shape of a laterally long rectangular shape in a plan view. In the power supply portion formation region 52A, a laterally rectangular opening portion 52A is formed at a center position in the left-right direction, and a pair of left and right flange portions 52b protruding in the horizontal direction are formed at left and right side surface portions thereof.
A pair of left and right screw insertion holes 52f are formed in the pair of left and right flange portions 52b. On the other hand, in the metal plate 60, a pair of left and right screw holes 60f are formed at positions corresponding to the pair of left and right screw insertion holes 52f. Then, in a state where the power feeding portion constituting region 52A of the insulating member 52 is pressed against the first plate surface 60a of the metal plate 60 from the lower side, the screws 56 are fastened to the screw holes 60f through the screw insertion holes 52f, whereby the power feeding accessory 50 is fixed to the metal plate 60.
A pair of left and right positioning pins 52c are formed on the upper surfaces of the pair of left and right flange portions 52b. On the other hand, in the metal plate 60, a pair of left and right engaging holes 60e are formed at positions corresponding to the pair of left and right positioning pins 52c. At this time, one of the pair of right and left engaging holes 60e is formed in a circular shape, and the other is formed in a horizontally long rectangular shape. When the power feeding portion forming region 52A of the insulating member 52 is pressed against the first plate surface 60a of the metal plate 60, the positioning pins 52c are inserted into the engagement holes 60e, whereby the power feeding accessory 50 is positioned with respect to the metal plate 60 in the horizontal direction.
The pair of right and left bus bar electrodes 54 includes two right and left pairs of terminal pieces 54a protruding toward the opening 52a, and they are brought into contact with the pair of right and left terminal portions 40b of the light emitting element 40, whereby the bus bar electrodes 54 are electrically connected to the light emitting element 40.
The pair of right and left bus bar electrodes 54 includes two pairs of front and rear pressing pieces 54B protruding toward the opening 52a, and the positioning of the light emitting element 40 is achieved by the contact of the pressing pieces with the lower surface of the main body support 40B.
At this time, each of the terminal pieces 54a and the pressing pieces 54B is configured as an elastic piece that elastically presses the main body supporting portion 40B from the lower side.
The insulating member 52 is formed such that an intermediate portion constituting region 52C located in the intermediate portion 50C extends in a prismatic shape from the rear end portion of the power feeding portion constituting region 52A toward the vertically upper side. The intermediate portion formation region 52C is formed to have a smaller lateral width than the power supply portion formation region 52A so as to be located at the center of the power supply portion formation region 52A in the lateral direction. The intermediate portion formation region 52C is formed so as to penetrate the opening 60C of the metal plate 60 in the vertical direction at a position near the front end surface thereof.
The insulating member 52 is formed such that a connector portion formation region 52B located in the connector portion 50B extends in the horizontal direction from an upper end portion of the intermediate portion formation region 52C toward the rear of the lamp. The connector portion forming region 52B extends in an angled tubular shape with the same left-right width as the intermediate portion forming region 52C, and is formed to open to the rear of the lamp.
Rectangular holes 52d extending in the front-rear direction of the lamp are formed in the upper wall portion of the connector portion forming region 52B, and rectangular recesses 52e are formed in the left and right side wall portions of the connector portion forming region 52B.
The terminal pins 54c of the pair of right and left bus bar electrodes 54 are disposed in the internal space of the connector portion constituting region 52B in a state protruding toward the rear of the lamp. The pair of right and left terminal pins 54c are each formed to extend in a plate shape along the vertical plane. The power supply attachment 50 is electrically connected to the external power supply by inserting the external power supply side connector 80 into the internal space of the connector portion constituting region 52B and fitting the rectangular hole 52d and the pair of right and left recesses 52e.
When the power feeding accessory 50 is attached to the first plate surface 60a of the metal plate 60, the opening 60C of the metal plate 60 is formed such that the rear end edge thereof is positioned further to the rear side of the lamp than the rear end surface of the connector 50B so that the intermediate portion 50C and the connector 50B of the power feeding accessory 50 do not interfere with the metal plate 60.
As shown in fig. 1 and 2, the reflector 70 supports the light source unit 30 by caulking at three portions of the light source support portion 72.
To achieve this, as shown by two-dot chain lines in fig. 3, caulking pins 72a extending upward are formed at three portions of the light source support portion 72 of the reflector 70, and insertion holes 60d through which the caulking pins 72a are inserted are formed at three portions of the metal plate 60 of the light source unit 30. When the metal plate 60 of the light source unit 30 is placed on the upper surface of the light source support portion 72 of the reflector 70, the distal end portions of the caulking pins 72a are heat-caulked in a state where the caulking pins 72a are inserted into the insertion holes 60d, whereby the light source unit 30 is fixed to the reflector 70.
Next, the operational effects of the present embodiment will be described.
The vehicle lamp 10 according to the present embodiment includes three lamp units 20A, 20B, and 20C, and the light source unit 30 of each of the lamp units 20A to 20C includes a power supply portion 50A that is in contact with and supplies power to the light emitting element 40, a connector portion 50B that is electrically connected to an external power supply, and an intermediate portion 50C located therebetween as the power supply attachment 50 for supplying power to the light emitting element 40, and the power supply portion 50A of the power supply attachment 50 is supported by the first plate surface 60A of the metal plate 60 together with the light emitting element 40, and the connector portion 50B of the power supply attachment 50 is formed to be opened in the space S2 on the second plate surface 60B side of the metal plate 60, so that the following operational effects can be obtained.
That is, in the present embodiment, the reflector 70 can be easily arranged in the space S1 on the first plate surface 60a side of the metal plate 60 in a free layout. Further, the connector portion 50B of the power feeding accessory 50 can be easily disposed in the space S2 on the second plate surface 60B side of the metal plate 60 in a state of being opened to be free. Thus, the degree of freedom in shape of the reflector 70 and the degree of freedom in arrangement of the connector 50B can be improved.
This will be specifically described with reference to fig. 5.
Fig. 5 (a) is a view similar to fig. 3 showing the light source unit 30 according to the present embodiment. On the other hand, fig. 5 (b) is a diagram showing a light source unit 530 as a comparative example of the present embodiment, which is the same as fig. 5 (a).
As shown in fig. 5 (b), in the light source unit 530 of the comparative example, the power feeding portion 550A of the power feeding accessory 550 is supported by the first plate surface 560A of the metal plate 560 together with the light emitting element 40, but the structure is different from the present embodiment in the following point: connector portion 550B of power feeding accessory 550 is formed to open in space S1 on the side of first plate surface 560a, instead of opening in space S2 on the side of second plate surface 560B of metal plate 560 as in the present embodiment.
In light source unit 530, connector portion 550B of power feeding accessory 550 is formed to protrude to a position below the lower surface of power feeding portion 550A in space S1 on the side of first plate surface 560A. Accordingly, reflector 570 has a structure in which the upper region of reflecting surface 570a is missing so as not to interfere with connector portion 550B of power feeding accessory 550. Therefore, the light emitted from the element 40 cannot be effectively used as the reflected light generated by the reflector 570 to the maximum.
On the other hand, in the light source unit 30 according to the present embodiment, as shown in fig. 5 (a), the connector portion 50B of the power feeding attachment 50 is formed to open in the space S2 on the second plate surface 60B side of the metal plate 60, so that there is no portion protruding to a position lower than the lower surface of the power feeding portion 50A in the space S1 on the first plate surface 60A side, and the reflection surface 70A of the reflector 70 does not have an upper region. Thus, the light emitted from the element 40 can be effectively utilized as the reflected light of the reflector 70 to the maximum.
As described above, according to the present embodiment, in the vehicle lamp 10 including the light source unit 30 supporting the light emitting element 40 and the power feeding attachment 50 on the metal plate 60, the degree of freedom in shape of the reflector 70 as the light control member and the degree of freedom in arrangement of the connector portion 50B can be improved.
In the light source unit 30 according to the present embodiment, the intermediate portion 50C of the power feeding attachment 50 is formed to extend so as to penetrate the opening 60C formed in the metal plate 60, so that the power feeding attachment 50 can be made compact. Further, by adopting a structure in which the opening 60c is formed in the metal plate 60 in this way, the metal plate 60 is disposed around the light emitting element 40 over a wider range than in the case of a structure in which a recess is formed in the rear end surface of the metal plate 60, for example, and therefore the heat radiation function of the light source unit 30 can be improved.
In the vehicle lamp 10 according to the present embodiment, since the three lamp units 20A to 20C are arranged in the vehicle width direction, the luminance required as the irradiation light from the vehicle lamp 10 can be easily ensured even if the light emission output of the light source unit 30 of each of the lamp units 20A to 20C is reduced. Accordingly, the heat dissipation function required for each of the lamp units 20A to 20C can be easily ensured by the metal plate 60.
Further, the lamp units 20A to 20C are configured such that the reflector 70 is disposed below the light source unit 30, and the light source unit 30 is supported by the reflector 70 at the metal plate 60 in a state where the first plate surface 60A of the metal plate 60 is directed downward, so that the following operational effects can be obtained.
That is, since the light source unit 30 is disposed with the second plate surface 60B of the metal plate 60 facing upward, the connector portion 50B of the power supply accessory 50 can be easily connected to the external power supply side connector 80.
In the light source unit 30, the opening 60c formed in the metal plate 60 is located on the lamp rear side of the light emitting element 40, and the connector 50B is opened toward the lamp rear side, so that the operation of connecting the connector 80 on the external power source side to the connector 50B can be more easily performed by sliding the connector 80 along the second plate surface 60B of the metal plate 60.
In the above embodiment, the example was described in which the intermediate portion 50C of the power feeding attachment 50 is located at the opening 60C of the metal plate 60, but the configuration may be such that it is located at a recess formed in the rear end surface of the metal plate 60, or in the vicinity of the rear end surface or the side end surface of the metal plate 60.
In the above embodiment, the example in which the power feeding attachment 50 is fixed to the metal plate 60 by screw fastening at the pair of right and left flange portions 52b of the insulating member 52 has been described, but may be fixed by clamp fixing or the like.
In the above embodiment, the configuration is formed in which the power feeding attachment 50 is connected to the light emitting element 40 by the pair of left and right terminal pieces 54a of the pair of left and right bus bar electrodes 54 being in contact with the pair of left and right terminal pieces 40b of the light emitting element 40, but the configuration is not limited to the configuration of the above embodiment, and in the case where the pattern shape of the pair of left and right terminal pieces 40b is different from that of the above embodiment, the configuration of the pair of left and right terminal pieces 54 can be also formed to be different from that of the above embodiment accordingly.
For example, in the case where the pair of right and left terminal portions 40B of the light emitting element 40 are formed to extend from both right and left sides of the main body supporting portion 40B of the light emitting element 40 toward the front of the lamp, as the pair of right and left bus bar electrodes 54, the pair of right and left terminal pieces 54a may be formed to abut against the pair of right and left terminal portions 40B of the light emitting element 40 on the front side of the main body supporting portion 40B of the light emitting element 40, and in the case where one terminal portion 40B extends from both right and left sides of the main body supporting portion 40B of the light emitting element 40 toward the front of the lamp and the other terminal portion 40B extends toward the rear of the lamp, the pair of right and left bus bar electrodes 54 may be formed such that one terminal piece 54a abuts against the terminal portion 40B of the light emitting element 40 on the front side of the main body supporting portion 40B of the light emitting element 40 and the other terminal piece 54a abuts against the terminal portion 40B of the light emitting element 40 on the rear side of the main body supporting portion 40B of the light emitting element 40.
In addition, a structure may be provided in which a pair of left and right terminal pieces 54a and three or more pairs of left and right terminal pieces 54a are provided instead of the two pairs of left and right terminal pieces 54 a.
In the above embodiment, the reflector 70 is supported by caulking, but the reflector may be supported by screw fastening or the like.
In the above embodiment, the example in which the vehicle lamp 10 includes three lamp units 20A to 20C has been described, but it is also possible to form a configuration in which two or less or four or more lamp units are provided.
Next, a modification of the above embodiment will be described.
First, a first modification of the above embodiment will be described.
Fig. 6 is a view similar to fig. 3 showing the light source unit 130 according to the present modification.
As shown in fig. 6, the basic structure of the present modification is the same as in the case of the above embodiment, but the structure of the metal plate 160 is partially different from that of the above embodiment.
That is, in the light source unit 130 of the present modification example, the power feeding portion 50A of the power feeding attachment 50 is supported by the first plate surface 160A which is the lower surface of the metal plate 160 together with the light emitting element 40, and the connector portion 50B of the power feeding attachment 50 is also formed to open in the space S2 on the second plate surface 160B side which is the upper surface of the metal plate 160, but the metal plate 160 of the present modification example is formed with the lower extension 160e extending vertically downward from the rear end 160d thereof, which is different from the case of the above embodiment.
The lower extension 160e is formed by bending the metal plate 160, and thus the surface of the rear end 160d of the metal plate 160 on the second plate surface 160b side is formed into a cylindrical convex curved surface extending in the left-right direction.
In the light source unit 130 according to the present modification, the metal plate 160 is also formed with the same opening 160c as in the case of the above-described embodiment. The power feeding accessory 50 is formed such that the intermediate portion 50C thereof extends so as to pass through the opening 160C.
Even in the case of the structure of the present modification, the same operational effects as those of the above-described embodiment can be obtained.
In addition, by adopting the structure of this modification, the heat capacity of the metal plate 160 can be increased, and thus the heat radiation function of the light source unit 30 can be further improved.
In the present modification, the surface of the rear end 160d of the metal plate 160 on the second plate surface 160B side is formed as a cylindrical convex curved surface extending in the left-right direction, so that the connector 80 can be smoothly slid along the second plate surface 160B of the metal plate 160 when the connector 80 on the external power supply side is connected to the connector portion 50B of the power supply attachment 50.
Next, a second modification of the above embodiment will be described.
Fig. 7 (a) is a view substantially identical to fig. 3, showing the light source unit 230 according to the present modification.
As shown in fig. 7 (a), the basic structure of the present modification is the same as in the case of the above embodiment, but the structure of the power supply attachment 250 is partially different from that of the above embodiment.
That is, the power feeding attachment 250 of the present modification is also provided with a power feeding portion 250A that contacts and feeds power to the light emitting element 40, a connector portion 250B that is electrically connected to an external power source, and an intermediate portion 250C located therebetween, and the power feeding portion 250A of the power feeding attachment 250 is supported by the first plate surface 60A of the metal plate 60 together with the light emitting element 40, and the connector portion 250B of the power feeding attachment 250 is formed so as to open in the space S2 on the second plate surface 60B side of the metal plate 60, but the connector portion 250B is opened obliquely upward toward the rear of the lamp rather than toward the horizontal direction.
Even in the case of the structure of the present modification, the same operational effects as those of the above-described embodiment can be obtained.
In addition, by adopting the structure of this modification, the operation of connecting the connector portion 250B of the power feeding accessory 250 to the connector 80 on the external power supply side can be easily performed from obliquely above the rear of the lamp.
Next, a third modification of the above embodiment will be described.
Fig. 7 (b) is a view substantially identical to fig. 3, showing the light source unit 330 according to the present modification.
As shown in fig. 7 (b), the basic structure of the present modification is the same as in the case of the above embodiment, but the structure of the power feeding attachment 350 is partially different from that of the above embodiment, and accordingly, the structure of the metal plate 360 is also partially different from that of the above embodiment.
That is, the power feeding attachment 350 of the present modification is also provided with a power feeding portion 350A that contacts and feeds the light emitting element 40, a connector portion 350B that is electrically connected to an external power source, and an intermediate portion 350C that is located therebetween, and the power feeding portion 350A of the power feeding attachment 350 is supported by the first plate surface 360A of the metal plate 360 together with the light emitting element 40, and the connector portion 350B of the power feeding attachment 350 is formed so as to open in the space S2 on the second plate surface 360B side of the metal plate 360, but the connector portion 350B opens vertically upward, which is different from the case of the above embodiment.
Even in the case of the structure of the present modification, the same operational effects as those of the above-described embodiment can be obtained.
In addition, by adopting the configuration of this modification, the operation of connecting the connector 80 on the external power source side to the connector portion 350B of the power feeding accessory 350 can be performed from directly above. Thus, the workability can be improved by the structure of the vehicle lamp 10.
In the light source unit 330 according to the present modification, the intermediate portion 350C of the power feeding attachment 350 is also formed to extend so as to pass through the opening portion 360C of the metal plate 360, but the connector portion 350B of the power feeding attachment 350 and the intermediate portion 350C are formed to have the same front-rear width, so that the power feeding attachment 350 can be formed to have a more compact structure than in the case of the above-described embodiment. In addition, since the front-rear width of the opening 360c can be made narrower than in the case of the above embodiment, the heat capacity of the metal plate 360 can be increased accordingly, and the heat radiation function of the light source unit 330 can be further improved.
Next, a fourth modification of the above embodiment will be described.
Fig. 8 is a view similar to fig. 3 showing a lamp unit 620A according to the present modification. Fig. 9 is a view taken in the direction IX in fig. 8, and fig. 10 is a cross-sectional view taken along line X-X in fig. 8. Further, fig. 11 is a detailed view of the main part of fig. 8, and fig. 12 is a detailed view of the main part of fig. 9.
As shown in fig. 8 to 12, the basic structure of the present modification is the same as in the case of the above-described embodiment, but the structure of the light source unit 630 is partially different from that of the above-described embodiment, and accordingly, the structure of the reflector 670 is also partially different from that of the above-described embodiment.
The light source unit 630 is formed in a structure in which the light emitting element 640 and the power supply accessory 650 are supported by the metal plate 660, as in the case of the above embodiment. The light source unit 630 is supported by the reflector 670 on the metal plate 660 with the light emitting surface 640a of the light emitting element 640 facing downward.
The reflector 670 has a reflecting surface 670a similar to that of the above embodiment, and a light source support portion 672 is formed at an upper end portion thereof. The reflector 670 is fixed to the metal plate 660 by caulking in a state where caulking pins 672a formed at three positions of the light source support portion 672 are inserted into insertion holes 660j formed in the metal plate 660.
In the light source unit 630, as in the case of the above embodiment, the power feeding portion 650A of the power feeding accessory 650 is supported by the first plate surface 660A which is the lower surface of the metal plate 660 together with the light emitting element 640, and the connector portion 650B of the power feeding accessory 650 is formed to open in the space S2 on the second plate surface 660B which is the upper surface of the metal plate 660.
In the present modification, an opening 660C is formed in the metal plate 660 on the lamp rear side of the light emitting element 640, and the power feeding attachment 650 is also formed such that the intermediate portion 650C extends so as to pass through the opening 660C. In addition, as in the case of the first modification, a lower extension 660e extending vertically downward from the rear end 660d is formed in the metal plate 660.
The light emitting element 640 has a structure in which an element main body 640A having a light emitting surface 640A formed in a laterally long rectangular shape is supported by a main body support portion 640B, and is supported by a metal plate 660 at the main body support portion 640B.
Specifically, the light emitting element 640 is supported by the metal plate 660 by being pressed against the metal plate 660 by the power feeding accessory 650 in a state of being placed on the first plate surface 660a of the metal plate 660 with the thermal grease 642 interposed therebetween.
The main body supporting portion 640B has a rectangular outer shape in a horizontal direction in a plan view, and a pair of right and left terminal portions 640B electrically connected to the cathode electrode and the anode electrode of the element main body 640A are disposed at positions on the right and left sides of the light emitting element 640 on the lower surface thereof.
The power feeding attachment 650 is configured as an insert molding in which a pair of right and left bus bar electrodes 654 electrically connected to the light emitting element 640 are embedded in an insulating member 652 formed so as to surround the light emitting element 640 in a state in which a part thereof is exposed.
The insulating member 652 is formed to extend in a flat plate shape along a horizontal plane in the power supply portion constituting region 652A located in the power supply portion 650A, and has an outer shape of a laterally long rectangular shape in a plan view. In this power supply portion constituting region 652A, a laterally rectangular opening 652A is formed at a center position in the lateral direction.
The pair of right and left bus bar electrodes 654 includes a pair of right and left terminal pieces 654a protruding from the rear inner peripheral surface of the power supply portion constituting region 652A toward the opening 652A, and they are brought into contact with the pair of right and left terminal portions 640b of the light emitting element 640, whereby the bus bar electrodes 654 are electrically connected to the light emitting element 640. Each of the terminal pieces 654a is configured as an elastic piece that elastically presses the main body support portion 640B from the lower side in the opening 652a, thereby supporting the light emitting element 640.
A pair of left and right flange portions 652b protruding in the horizontal direction are formed on both left and right side surface portions in the power feeding portion constituting region 652A of the insulating member 652.
The pair of left and right flange portions 652b are offset upward with respect to the power feeding portion constituting region 652A. A pair of left and right screw insertion holes 652f are formed in the pair of left and right flange portions 652b.
On the other hand, the metal plate 660 is offset upward in the region at the pair of left and right flange portions 652b, and a pair of left and right substantially rectangular recesses 660m are formed in the first plate surface 660 a. The depth of each concave portion 660m is set to be substantially the same as the wall thickness of the flange portion 652b. In the metal plate 660, a pair of right and left screw holes 660f are formed at positions corresponding to the pair of right and left screw insertion holes 652f.
Further, a pair of left and right positioning pins 652c protruding upward are formed at positions on the left and right sides of the opening 652A in the power feeding portion constituting region 652A. The base end portion of each positioning pin 652c is formed in a cylindrical shape, and the tip end portion is formed in a conical shape.
On the other hand, in the metal plate 660, a pair of left and right engaging holes 660k are formed at positions corresponding to the pair of left and right positioning pins 652c. At this time, one of the pair of right and left engaging holes 660k is formed in a circular shape, and the other is formed in an oblong shape long in the right and left direction.
Then, in a state where the pair of left and right flange portions 652b of the insulating member 652 are pressed from the lower side against the pair of left and right recess portions 660m of the first plate surface 660a of the metal plate 660, the screws 656 are fastened to the screw holes 660f through the screw insertion holes 652f, whereby the power feeding attachment 650 is fixed to the metal plate 660. At this time, by inserting each positioning pin 652c into each engagement hole 660k, the power feeding accessory 650 is positioned with respect to the metal plate 660 in the horizontal direction.
The insulating member 652 is formed such that an intermediate portion constituting region 652C located in the intermediate portion 650C extends in a prismatic shape from the rear end portion of the power feeding portion constituting region 652A toward the vertically upper side. The intermediate portion formation region 652C is formed to have a smaller lateral width than the power supply portion formation region 652A so as to be located at the center of the power supply portion formation region 652A in the lateral direction. The intermediate portion formation region 652C is formed so as to penetrate the opening 660C of the metal plate 660 in the vertical direction at a position near the front end surface thereof.
The insulating member 652 is formed such that a connector portion constituting region 652B located in the connector portion 650B extends in the horizontal direction from an upper end portion of the intermediate portion constituting region 652C toward the rear of the lamp. The connector portion formation region 652B extends in an angled tubular shape with the same left-right width as the intermediate portion formation region 652C, and is formed to open to the rear of the lamp.
Rectangular holes 652d extending in the front-rear direction of the lamp are formed in the upper wall portion of the connector portion formation region 652B, and rectangular concave portions 652e are formed in the left and right side wall portions of the connector portion formation region 652B.
In the internal space of the connector portion constituting region 652B, a pair of left and right terminal pins 654c of the busbar electrode 654 are disposed in a state protruding toward the rear of the lamp. The pair of right and left terminal pins 654c are each formed to extend in a plate shape along the vertical plane. The power supply accessory 650 is electrically connected to the external power supply by inserting the external power supply side connector 80 into the internal space of the connector portion constituting region 652B and fitting the rectangular hole 652d and the pair of left and right recesses 652e.
Fig. 13 is a perspective view showing a state in which the light emitting element 640 is mounted on the first plate surface 660a of the metal plate 660 when viewed obliquely from below. That is, fig. 13 shows a state in which the metal plate 660 is inverted from the state shown in fig. 8.
As shown in fig. 13, on the first plate surface 660a of the metal plate 660, protrusions 660g for positioning the light emitting element 640 are formed at four portions surrounding the mounting area a for mounting the light emitting element 640, respectively. The light emitting element 640 is pressed against the metal plate 660 by the power feeding accessory 650 in a state where the four protrusions 660g are positioned in the mounting area a.
Each of the protruding portions 660g is formed in a substantially rectangular parallelepiped shape, and a portion of the front end portion on the mounting region a side is chamfered 660g1. Each of the protruding portions 660g is formed by plastically deforming a part of the metal plate 660 when the metal plate 660 is press-formed into an L-shape.
A recess 660i is formed in a portion of the first plate surface 660a of the metal plate 660 adjacent to each of the protrusions 660g in the mounting area a. Each recess 660i has an elongated rectangular shape surrounding the inner side surface (i.e., the surface on the mounting area a side) of each protrusion 660g. Further, each protrusion 660g is formed such that its inner side surface extends to the bottom surface of each recess 660i. The depth of each recess 660i is set to be the same as or slightly larger than the size of the corner R formed at the base end position of the inner side surface of each protrusion 660g.
Then, after the metal plate 660 is disposed with the first plate surface 660a facing upward, the light-emitting element 640 is placed on the first plate surface 660a of the metal plate 660 in a state in which the heat conductive grease 642 is applied to the bottom surface of the main body support portion 640B of the light-emitting element 640 (or in a state in which the heat conductive grease 642 is applied to the placement area a of the first plate surface 660a of the metal plate 660), and the light-emitting element 640 is inserted between the four protruding portions 660g and pressed against the first plate surface 660a of the metal plate 660, whereby the light-emitting element 640 is placed on the first plate surface 660a of the metal plate 660 in a state positioned in the placement area a.
At this time, since the chamfer 660g1 is provided in each of the protruding portions 660g, the light emitting element 640 is smoothly guided to the mounting area a while being guided by the four protruding portions 660 g.
Further, since the recessed portions 660i are formed in the first plate surface 660a of the metal plate 660 at portions adjacent to the respective protruding portions 660g in the mounting area a, even if a large or small number of corners R are formed at the base end positions of the inner surfaces of the respective protruding portions 660g, the light emitting element 640 can be accurately mounted in the mounting area a.
As shown in fig. 10 and 11, a recess 660h having a substantially rectangular parallelepiped shape is formed in the second plate surface 660b of the metal plate 660 at a position substantially directly above each protrusion 660g, thereby improving the shape accuracy of each protrusion 660g formed by plastic deformation of the metal plate 660.
Even in the case of the structure of the present modification, the same operational effects as those of the above-described embodiment can be obtained.
In the light source unit 630 according to the present modification, the light emitting element 640 is placed on the first plate surface 660a of the metal plate 660 with the thermal grease 642 interposed therebetween, and the protruding portions 660g for positioning the light emitting element 640 are formed in four portions surrounding the placement area a for placing the light emitting element 640 on the first plate surface 660a of the metal plate 660, respectively, and then the light emitting element 640 is pressed against the metal plate 660 by the power feeding attachment 650 in a state in which the four protruding portions 660g are positioned in the placement area a, whereby the following operational effects can be obtained.
That is, the light emitting element 640 can be supported on the metal plate 660 without using an adhesive. Therefore, a step of applying an adhesive is not required, and a step of curing the adhesive while maintaining the state of positioning the light emitting element 640 is also not required, so that the working process can be simplified.
In the present modification, the chamfer 660g1 is provided at the front end portion of each protrusion 660g on the mounting area a side, so that the light emitting element 640 can be smoothly mounted on the mounting area a.
In the present modification, the recess 660i is formed in the mounting area a adjacent to each of the protrusions 660g, and therefore the following operational effects can be obtained.
That is, since the corner R is inevitably formed at the connection portion between each protrusion 660g and the first plate surface 660a of the metal plate 660, if the recess 660i is not formed, the light emitting element 640 may abut against the connection portion of the metal plate 660, and thus the light emitting element 640 may not be accurately placed in the placement area a.
In contrast, in the present modification, since the recess 660i is formed in the mounting region a adjacent to each of the protrusions 660g, the light emitting element 640 can be placed accurately in the mounting region a without abutting the connection portion of the metal plate 660.
Next, a fifth modification of the above embodiment will be described.
Fig. 14 is a view similar to fig. 12 showing a main part of the light source unit according to the present modification.
As shown in fig. 14, the basic structure of the present modification is the same as in the case of the fourth modification, but the structures of the metal plate 760 and the power feeding attachment 750 are partially different from those of the fourth modification.
That is, the metal plate 760 has protrusions 760g for positioning the light emitting element 640 formed at two positions, namely, the front side and the left side of the lamp, among four positions surrounding the mounting region for mounting the light emitting element 640 on the first plate surface 760a, but has no protrusions 760g formed at two positions, namely, the rear side and the right side of the lamp.
In the present modification, a recess 760i is also formed in a portion adjacent to each projection 760g in the mounting region of the first plate surface 760 a. On the other hand, the front end portion of each projection 760g is not chamfered at the mounting region side.
The power feeding attachment 750 has a structure including an insulating member 752 formed so as to surround the light emitting element 640 and a pair of right and left bus electrodes 754 protruding from the rear inner peripheral surface of the power feeding portion constituting region 752A toward the opening 752A, but the structure of the power feeding portion constituting region 752A is partially different from that in the fourth modification.
That is, the power feeding portion formation region 752A is formed with a rectangular force application piece 752g protruding from the rear inner peripheral surface thereof toward the opening 752A, and a rectangular force application piece 752h protruding from the right inner peripheral surface thereof toward the opening 752A.
The urging piece 752g is formed at a position opposed to the protruding portion 760g with a width wider than the protruding portion 760g on the lamp front side, and the front end surface thereof is formed in a positional relationship that is front-to-rear symmetrical with respect to the front end surface of the protruding portion 760g on the lamp front side with respect to the mounting area. The corner of the front end portion of the urging piece 752g on the first plate surface 760a side of the metal plate 760 is chamfered, thereby forming an inclined surface 752g1.
The urging piece 752h is formed at a position opposed to the left protruding portion 760g with a width larger than that of the protruding portion 760g, and a front end surface thereof is formed in a position relation that is bilaterally symmetrical to the front end surface of the left protruding portion 760g with respect to the mounting area. The corner of the front end portion of the urging piece 752h on the first plate surface 760a side of the metal plate 760 is chamfered, thereby forming an inclined surface 752h1.
In the present modification, the light emitting element 640 is positioned in the mounting region by the protrusions 760g formed at the two portions of the first plate surface 760a of the metal plate 760 and the urging pieces 752g, 752h formed at the two portions of the insulating member 752 of the power feeding attachment 750.
Fig. 15 is a view showing a state in which the light emitting element 640 is mounted on the first plate surface 760a of the metal plate 760, where (a) in fig. 15 is the same as fig. 14, (b) in fig. 15 is a sectional view taken along line b-b of (a) in fig. 15, and (c) in fig. 15 is a sectional view taken along line c-c of (a) in fig. 15.
As shown in fig. 15 (a), after the metal plate 760 is disposed with the first plate surface 760a facing upward, the light-emitting element 640 is placed on the first plate surface 760a at a position separated obliquely rearward from the two protruding portions 760g in a state where the heat conductive grease 642 is applied to the bottom surface of the main body support portion 640B of the light-emitting element 640.
Then, as shown in fig. 15 b, when the insulating member 752 of the power supply attachment 750 is brought into contact with the metal plate 760 from above (see arrow D), the inclined surface 752g1 of the urging piece 752g comes into contact with the rear end corner of the element main body 640A of the light-emitting element 640. Thereby, the light emitting element 640 is pressed toward the front of the lamp (see arrow F). Since the light emitting element 640 is placed on the first plate surface 760a of the metal plate 760 through the heat conductive grease 642, it slides forward of the lamp and contacts the protrusion 760g on the front side of the lamp. Then, the rear end corner of the element main body 640A is separated from the inclined surface 752g1 of the urging piece 752g, and the front end surface of the urging piece 752g descends along the rear end surface of the element main body 640A, whereby the light emitting element 640 is sandwiched between the front protrusion 760g and the urging piece 752 g.
As shown in fig. 15 (c), when the insulating member 752 of the power feeding attachment 750 is brought into contact with the metal plate 760 from above, the inclined surface 752h1 of the urging piece 752h is brought into contact with the right-end corner (left-end corner in fig. 15 (c)) of the main body supporting portion 640B of the light-emitting element 640. As a result, the light emitting element 640 is pushed in the left direction (see arrow L) and slid in the left direction, and contacts the left protruding portion 760 g. Then, the right end corner of the main body support portion 640B is separated from the inclined surface 752h1 of the urging piece 752h, and the front end surface of the urging piece 752h descends along the right end surface of the main body support portion 640B, whereby the light emitting element 640 is sandwiched by the left-side protrusion 760g and the urging piece 752h from both the left and right sides.
In this way, when the power supply attachment 750 is mounted, the light emitting element 640 slides obliquely leftward and forward on the first plate surface 760a of the metal plate 760 as indicated by an arrow FL of fig. 15 (a), and then is positioned in the mounting area in contact with the two protrusions 760 g.
In the case of the structure of this modification, the light emitting element 640 can be supported on the metal plate 760 without using an adhesive. Therefore, a step of applying an adhesive is not required, and a step of curing the adhesive while maintaining the state of positioning the light emitting element 640 is also not required, so that the working process can be simplified. Further, the light emitting element 640 can be easily positioned in the mounting region.
In the present modification, the protruding portions 760g for positioning the light emitting element 640 in front of and to the left of the lamp are formed in the first plate surface 760a of the metal plate 760 at two locations surrounding the mounting area for mounting the light emitting element 640, and the urging pieces 752g for urging the light emitting element 640 toward the front of the lamp and the urging pieces 752h for urging the light emitting element 640 toward the left are formed in the power feeding attachment 750, so that the light emitting element 640 can be easily positioned in the mounting area by pressing the light emitting element 640 against the metal plate 760 by the power feeding attachment 750.
In the present modification, the inclination angle of the inclined surfaces 752g1, 752h1 formed on the urging pieces 752g, 752h is preferably set to a value of about 15 ° to 60 °.
In the present modification, the inclined surfaces 752g1 and 752h1 are formed to extend in a planar shape, but may be formed to extend in a convex curved surface or a concave curved surface.
Next, a sixth modification of the above embodiment will be described.
Fig. 16 is a view similar to fig. 10 showing a main part of the light source unit according to the present modification. However, fig. 16 shows a state in which the main portion of the light source unit is inverted up and down from the state shown in fig. 10.
As shown in fig. 16, the basic structure of the present modification is the same as that of the fourth modification, but the support of the power feeding attachment 850 to the metal plate 860 is performed by engaging the power feeding attachment 850 with the metal plate 860, which is different from that of the fourth modification.
That is, in the present modification, a pair of left and right engagement pieces 852j are formed in the insulating member 852 of the power feeding attachment 850, and a pair of left and right engagement holes 860n are formed in the metal plate 860 at positions corresponding to the pair of left and right engagement pieces 852 j. The engagement pieces 852j are engaged with the metal plate 860 in a state of being inserted into the engagement holes 860n.
Each engagement piece 852j is composed of a shaft portion 852j1 extending in the up-down direction at a plurality of places (for example, three places) in the circumferential direction around a through hole 852i formed in the insulating member 852, and a folded-back portion 852j2 folded back from the front end position of the shaft portion 852j1 toward the radial outer circumferential side and into an acute angle shape toward the base end side.
When the engagement pieces 852j are inserted into the engagement holes 860n from the first plate surface 860a side of the metal plate 860, the folded portions 852j2 thereof are elastically deformed from the state shown in fig. 16 (a) to the inner peripheral side by abutting against the inlet portions of the inner wall surfaces of the engagement holes 860n, and are formed into the shape shown in fig. 16 (b) and pass through the engagement holes 860n, and when the folded portions 852j2 are protruded to the opposite sides of the engagement holes 860n, they are locked to the metal plate 860 in a state of being spread to the outer peripheral side along the second plate surface 860b as shown in fig. 16 (c).
The power feeding attachment 850 is positioned in the up-down direction by the engagement of the pair of left and right engagement pieces 852j with the pair of left and right engagement holes 860n while being supported by the metal plate 860, and is positioned in the horizontal direction by the engagement of the pair of left and right positioning pins 852c with the pair of left and right engagement holes 860 k.
Even when the structure of the present modification is adopted, the same operational effects as those of the fourth modification can be obtained.
In addition, as in the present modification, the power feeding attachment 850 is engaged with the metal plate 860 to support the power feeding attachment 850 to the metal plate 860, and thus, fixation by screw tightening is not required, and therefore, the reduction in the number of components and the simplification of the working process can be achieved. In addition, the possibility that the light emitted from the light emitting element 640 is blocked by the screw head protruding from the power feeding attachment 850 can be eliminated.
In the present modification, a pair of left and right engagement pieces 852j are formed in the power feeding attachment 850, and a pair of left and right engagement holes 860n are formed in the metal plate 860, and the front end portions 852j of the engagement pieces 852j are engaged with the metal plate 860 in a state of being inserted into the engagement holes 860n, so that the power feeding attachment 850 and the metal plate 860 can be engaged with each other with a simple structure.
Next, a seventh modification of the above embodiment will be described.
Fig. 17 is a view similar to fig. 16 showing a main part of the light source unit according to the present modification.
As shown in fig. 17, in the present modification, the power feeding attachment 950 is supported by the metal plate 960 by engaging the power feeding attachment 950 with the metal plate 960, but the detailed configuration thereof is different from that in the sixth modification.
That is, in the present modification, a pair of left and right engaging pieces 952j are formed in the insulating member 952 of the power feeding attachment 950, and a pair of left and right engaging holes 960n are formed in the metal plate 960. The engagement pieces 952j are engaged with the metal plate 960 in a state of being inserted into the engagement holes 960n.
In the present modification, each engagement piece 952j includes a single shaft portion 952j1 extending in the vertical direction, and a pair of folded portions 952j2 folded back from the front end position of the shaft portion 952j1 to the left and right sides and folded back to the base end side in an acute angle.
In the present modification, an abutment portion 952j3 extending toward the other engagement piece 952j is formed at the base end portion of the shaft portion 952j1 of one engagement piece 952j of the pair of left and right engagement pieces 952 j.
Further, in the present modification, the distance between the pair of left and right engagement pieces 952j is set to a value slightly smaller than the distance between the pair of left and right engagement holes 960n.
When the engagement pieces 952j are inserted into the engagement holes 960n from the first plate surface 960a side of the metal plate 960, the folded portions 952j2 thereof abut against the inlet portions of the inner wall surfaces of the engagement holes 960n and elastically deform from the state shown in fig. 17 (a) to the shaft portion 952j1 side, so that the folded portions 952j2 pass through the engagement holes 960n in the state of being in the shape shown in fig. 17 (b), and when protruding to the opposite side of the engagement holes 960n, the folded portions 952j2 are locked to the metal plate 960 in the state of being spread outward along the second plate surface 960b as shown in fig. 17 (c).
In this modification, immediately before the folded portion 952j2 of one engagement piece 952j protrudes to the opposite side of the engagement hole 960n, the contact portion 952j3 formed at the base end portion of the shaft portion 952j1 thereof contacts the entrance portion of the inner wall surface of the engagement hole 960n, and when the folded portion 952j2 protrudes to the opposite side of the engagement hole 960n, the contact portion 952j3 contacts the inner wall surface of the engagement hole 960 n. At this time, the shaft portion 952j1 of the other engagement piece 952j also abuts against the inner wall surface of the engagement hole 960 n.
The power feeding attachment 950 is positioned in the up-down direction by engaging the pair of left and right engaging pieces 952j with the pair of left and right engaging holes 960n while being supported by the metal plate 960, and is positioned in the horizontal direction by engaging the pair of left and right positioning pins 952c with the pair of left and right engaging holes 960 k. At this time, the pair of left and right engagement pieces 952j comes into contact with the inner wall surfaces of the pair of left and right engagement holes 960n, thereby improving the positioning accuracy in the left-right direction.
Even in the case of adopting the structure of the present modification, the same operational effects as those of the sixth modification can be obtained.
In addition, in the present modification, in the pair of left and right engaging pieces 952j, the abutting portion 952j3 formed at the base end portion of the shaft portion 952j1 of one engaging piece 952j abuts against the inner wall surface of one engaging hole 960n, and the shaft portion 952j1 of the other engaging piece 952j abuts against the inner wall surface of the other engaging hole 960n, so that the positioning accuracy in the left-right direction in the state in which the power feeding attachment 950 is engaged with the metal plate 960 can be improved.
Next, an eighth modification of the above embodiment will be described.
Fig. 18 is a view similar to fig. 16 showing a main part of the light source unit according to the present modification.
As shown in fig. 18, in the present modification, the power feeding attachment 1050 is supported by engaging the power feeding attachment 1050 with the metal plate 1060, but the engagement is performed by caulking fixation, which is different from the case of the sixth modification.
That is, in the present modification, the metal plate 1060 is formed with a pair of left and right cylindrical burring portions 1060p protruding toward the first plate surface 1060a by burring at two portions of the metal plate 1060.
In the present modification, a pair of left and right engagement holes 1052k are formed in the insulating member 1052 of the power feeding accessory 1050 at positions corresponding to the pair of left and right burring portions 1060 p. Each engagement hole 1052k is formed to have an inner diameter slightly larger than the outer diameter of each burring 1060p, and a chamfer 1052k1 is formed at the end of the engagement hole 1052k on the second plate surface 1060b side of the metal plate 1060.
The burring 1060p is formed slightly longer than the length of the engagement hole 1052k.
As shown in fig. 18 (a), the power feeding accessory 1050 is placed on the first plate surface 1060a of the metal plate 1060 as shown in fig. 18 (b) by inserting the pair of left and right burring portions 1060p into the pair of left and right engagement holes 1052k from the first plate surface 1060a side of the metal plate 1060. At this time, the pair of left and right burring portions 1060p are in a state in which the tip ends 1060p1 protrude from the pair of left and right engagement holes 1052k. Thereafter, as shown in fig. 18 (c), the tip ends of the pair of right and left caulking jigs 1000 formed in a truncated cone shape are brought into contact with the tip ends 1060p1 of the pair of right and left burring portions 1060p, whereby the tip ends 1060p1 of the burring portions 1060p are locked to the insulating member 1052 in a state of being plastically deformed so as to spread to the outer peripheral side along the surface of the insulating member 1052.
Even in the case of adopting the structure of the present modification, the same operational effects as those of the sixth modification can be obtained.
In the present modification, the engagement between the power feeding accessory 1050 and the metal plate 1060 is performed by caulking and fixing the metal plate 1060 to the power feeding accessory 1050, so that the power feeding accessory 1050 can be easily positioned in the plane vertical direction and the plane direction of the metal plate 1060.
Therefore, in the present modification, the pair of left and right positioning pins 752c formed in the power feeding attachment 750 and the pair of left and right engagement holes 760k formed in the metal plate 760 in the fifth modification are not required.
Next, a ninth modification of the above embodiment will be described.
Fig. 19 (a) is a view similar to fig. 10 showing a main part of the light source unit according to the present modification.
As shown in fig. 19 (a), the basic structure of the present modification is the same as in the case of the fourth modification, but the structure of the metal plate 1160 is partially different from that of the fourth modification.
That is, in the present modification, the light emitting element 640 and the power feeding attachment 650 are supported by the metal plate 1160, but the pedestal portion 1160q is formed on the first plate surface 1160a of the metal plate 1160. In the first plate surface 1160a of the metal plate 1160, a mounting region for mounting the light emitting element 40 is located in the pedestal portion 1160q.
The base portion 1160q is formed by plastically deforming the metal plate 1160 to have substantially the same thickness as the peripheral region thereof, and a concave portion 1160r is formed on the back surface side (i.e., the second plate surface 1160b side) thereof.
The light emitting element 640 is supported on the metal plate 1160 by fixing the main body support portion 640B of the light emitting element 640 to the mount portion 1160q using an adhesive or the like, for example.
By adopting the structure of this modification, the light emitted from the light emitting element 640 can be prevented from being blocked by the power supply accessory 650. Accordingly, the thickness of the insulating member 652 of the power feeding accessory 650 can be made to have a margin for the height of the pedestal 1160q, and thus the power feeding accessory 650 can be easily manufactured.
In addition, as in the present modification, although the power feeding attachment 650 is supported by screw fastening to the metal plate 1160, the light emitted from the light emitting element 640 is hardly shielded by the screw head protruding from the power feeding attachment 650.
Next, a tenth modification of the above embodiment will be described.
Fig. 19 (b) is a view similar to fig. 19 (a) showing a main part of the light source unit according to the present modification.
As shown in fig. 19 (b), the basic structure of the present modification is the same as that of the ninth modification, but the present modification differs from the ninth modification in that a plurality of fins 1262 are additionally arranged on the second plate surface 1260b of the metal plate 1260.
The plurality of fins 1262 are fixed to the recess 1260r on the back surface side of the base portion 1260q and a plurality of portions of the peripheral region thereof by adhesion, welding, or the like.
By adopting the structure of this modification, the heat generated by the light-emitting element 640 can be efficiently dissipated by the plurality of heat dissipation fins 1262. In this way, although the recess 1260r is formed on the back surface side of the first plate surface 1260a of the metal plate 1260 along with the formation of the pedestal portion 1260q, the heat radiation function of the metal plate 1260 can be sufficiently ensured.
In the present modification, the case where the plurality of fins 1262 are formed of a member independent of the metal plate 1260 has been described, but a structure in which they are integrally formed with the metal plate 1260 may be adopted.
Next, an eleventh modification of the above embodiment will be described.
Fig. 19 (c) is a view similar to fig. 19 (a) showing a main part of the light source unit according to the present modification.
As shown in fig. 19 (c), the basic structure of the present modification is the same as in the case of the ninth modification, but the structure of the metal plate 1360 is partially different from that of the ninth modification.
That is, in the present modification, the pedestal portion 1360q similar to that in the case of the ninth modification is formed in the first plate surface 1360a of the metal plate 1360, but the concave portion 1160r as in the ninth modification is not formed on the back surface side (i.e., the second plate surface 1360b side) but the flat surface portion 1360s coplanar with the peripheral region thereof.
Further, the flat portion 1360s is formed by further plastically deforming a part of the metal plate 1360 after the pedestal portion 1360q is formed by press forming.
By adopting the structure of this modification, the thickness of the portion of the metal plate 1360 where the pedestal 1360q is located can be increased, and thus the heat radiation function of the metal plate 1360 can be improved.
The numerical values shown as the specifications in the above embodiment and the modification thereof are merely examples, and they may be appropriately set to different values.
The present invention is not limited to the configuration described in the above embodiment and the modification examples thereof, and various modifications other than the above may be adopted.

Claims (13)

1. A light source unit comprising a light emitting element, a power supply attachment for supplying power to the light emitting element, and a metal plate for supporting the light emitting element and the power supply attachment,
the light emitting element is supported on the first plate surface of the metal plate,
the power supply accessory comprises a power supply part which is abutted against the light emitting element and supplies power to the light emitting element, a connector part which is electrically connected with an external power supply, and an intermediate part which is positioned between the power supply part and the connector part,
Further, the power supply attachment is configured as an insert molding in which a pair of right and left bus electrodes for making electrical conduction with the light emitting element are embedded in an insulating member provided so as to surround the light emitting element in a state in which a part thereof is exposed,
the insulating member has:
a power supply unit formation region located at the power supply unit;
an intermediate portion forming region that is provided so as to extend in a prismatic shape from the power supply portion forming region toward a vertically upper side, and that is located at the intermediate portion; and
a connector portion forming region provided to extend in a horizontal direction from the intermediate portion forming region and located at the connector portion,
an opening is provided in the metal plate,
the power supply portion forming region is supported on the first plate surface of the metal plate,
the intermediate portion forming region is formed so as to penetrate the opening portion of the metal plate in the vertical direction,
the connector portion forming region is formed as a space opening on the second plate surface side of the metal plate,
the light emitting element is placed on the first surface of the metal plate through heat conduction grease,
in the first plate surface of the metal plate, protrusions for positioning the light emitting element are formed at a plurality of locations surrounding a mounting area for mounting the light emitting element,
The light emitting element is pressed against the metal plate by the power supply attachment in a state where the plurality of protruding portions are positioned in the mounting region.
2. A light source unit according to claim 1, wherein,
the power supply attachment is formed such that the intermediate portion extends so as to penetrate the opening portion.
3. The light source unit according to claim 1 or 2, wherein a portion on the mounting region side in the front end portion of each of the protruding portions is chamfered.
4. The light source unit according to claim 1 or 2, wherein a concave portion is formed in a portion adjacent to each of the protruding portions in the mounting region.
5. A light source unit according to claim 1 or 2, wherein,
the light emitting element is placed on the first surface of the metal plate through heat conduction grease,
in the first plate surface of the metal plate, protrusions for positioning the light emitting element in a desired direction are formed at two portions surrounding a mounting region for mounting the light emitting element,
the power supply attachment is formed with a biasing piece that biases the light emitting element in the desired direction by abutting the light emitting element.
6. The light source unit according to claim 1 or 2, wherein the support of the power feeding accessory to the metal plate is performed by engaging the power feeding accessory with the metal plate.
7. A light source unit according to claim 6, wherein,
a plurality of clamping pieces are formed on the power supply accessory,
a plurality of engaging holes are formed in the metal plate,
each of the engaging pieces is configured such that a distal end portion of each of the engaging pieces engages with the metal plate in a state of being inserted into each of the engaging holes.
8. The light source unit according to claim 7, wherein at least a part of the engaging pieces are formed with an abutting portion that abuts against an inner wall surface of the engaging hole in a state of being inserted into the engaging hole.
9. The light source unit according to claim 6, wherein the engagement of the power feeding attachment with the metal plate is performed by caulking the metal plate with respect to the power feeding attachment.
10. A light source unit according to claim 1 or 2, wherein,
a pedestal part is formed on the first plate surface of the metal plate,
a mounting region for mounting the light emitting element on the first plate surface of the metal plate is located on the pedestal portion.
11. A vehicle lamp comprising the light source unit according to any one of claims 1 to 10,
the vehicle lamp includes a reflector for reflecting light emitted from the light emitting element of the light source unit toward the front of the lamp,
the reflector is disposed below the light source unit,
the light source unit is supported by the reflector at the metal plate in a state that a first plate surface of the metal plate faces downward.
12. The vehicle lamp according to claim 11, wherein the plurality of light source units and the reflector are arranged in the vehicle lamp in a state of being aligned in the vehicle width direction.
13. A vehicle lamp according to claim 11 or 12, wherein,
the opening is positioned at the rear side of the lamp of the light-emitting element,
the connector portion opens toward the rear of the lamp.
CN202010650360.1A 2019-07-09 2020-07-08 Light source unit and vehicle lamp Active CN112212289B (en)

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JP2019127613 2019-07-09
JP2020-024320 2020-02-17
JP2020024320A JP2021012866A (en) 2019-07-09 2020-02-17 Light source unit and vehicle lighting tool

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