CN112005046A - Vehicle lamp - Google Patents
Vehicle lamp Download PDFInfo
- Publication number
- CN112005046A CN112005046A CN201980027253.9A CN201980027253A CN112005046A CN 112005046 A CN112005046 A CN 112005046A CN 201980027253 A CN201980027253 A CN 201980027253A CN 112005046 A CN112005046 A CN 112005046A
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- China
- Prior art keywords
- light
- substrate
- cover
- lamp
- emitting element
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- 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.)
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Classifications
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- 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
- F21S41/36—Combinations of two or more separate reflectors
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- 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
- F21S41/39—Attachment thereof
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A first cover part (34) covering the substrate (50) is arranged on the substrate (50) side of the first reflection part (30) relative to the first reflection surface part (32), and a first light transmission part (34Aa) is formed on the first cover part (34). A second cover part (44) covering the substrate (50) is arranged on the substrate (50) side of the second reflection part (40) relative to the second reflection surface part (42), and a second light transmission part (44Aa) is formed on the second cover part (44). The substrate (50) is sandwiched between the first cover section (34) and the second cover section (44) from both sides thereof. Thus, the vehicle lamp can suppress the generation of stray light while minimizing the number of components.
Description
Technical Field
The present invention relates to a vehicle lamp configured to reflect light emitted from a first light emitting element and a second light emitting element mounted on both surfaces of a substrate toward a front of the lamp by a first reflection portion and a second reflection portion.
Background
Conventionally, there is known a vehicle lamp configured to reflect light emitted from a first light emitting element and a second light emitting element toward the front of the lamp by a first reflection portion and a second reflection portion.
"patent document 1" describes the following structure: in such a vehicle lamp, the first light emitting element and the second light emitting element are mounted on both the upper and lower surfaces of the substrate.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2016-105372
Disclosure of Invention
Technical problem to be solved by the invention
In such a vehicle lamp, it is desirable that glare is not generated by light emitted from the first light emitting element and the second light emitting element, and stray light causing the glare is not generated.
In the vehicle lamp described in the above-mentioned "patent document 1", the light shield for shielding direct light emitted from the first light-emitting device mounted on the upper surface of the substrate toward the front of the lamp is mounted on the upper surface of the substrate, thereby preventing glare from occurring.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle lamp configured to reflect light emitted from first and second light emitting elements mounted on both surfaces of a substrate toward the front of the lamp by first and second reflecting portions, and to suppress generation of stray light from the first and second light emitting elements without increasing the number of elements.
Means for solving the problems
The present invention has been made in an attempt to achieve the above object by studying the structures of the first and second reflection portions.
That is, the vehicle lamp according to the present disclosure includes: a substrate having a first light-emitting element mounted on one surface and a second light-emitting element mounted on the other surface; a first reflection unit that reflects light emitted from the first light-emitting element toward the front of the lamp; and a second reflection part which reflects the light emitted from the second light emitting element toward the front of the lamp,
the first reflection unit includes: a first reflecting surface portion for reflecting exit light from the first light emitting element; and a first cover section disposed on the substrate side of the first reflecting surface section so as to cover the substrate,
the second reflection unit includes: a second reflecting surface portion for reflecting the light emitted from the second light emitting element; and a second cover section disposed on the substrate side of the second reflecting surface section so as to cover the substrate,
a first translucent portion for allowing the light emitted from the first light-emitting element to enter the first reflecting surface portion is formed in the first cover portion,
a second transparent portion for allowing the light emitted from the second light emitting element to enter the second reflecting surface portion is formed in the second cover portion,
the substrate is sandwiched by the first cover portion and the second cover portion from both sides of the substrate.
The specific arrangement of the "first and second reflection parts" and the "substrate" is not particularly limited.
The "first cover portion" and the "second cover portion" may be arranged to cover the entire region of the substrate, or may be arranged to cover a partial region of the substrate.
The "first light transmitting portion" and the "second light transmitting portion" are not particularly limited as long as they are configured such that the light emitted from the first light emitting element and the light emitted from the second light emitting element are incident on the first reflecting surface portion and the second reflecting surface portion, respectively, and may be configured by, for example, an opening such as a through hole or a slit, or a transparent window.
The substrate is not particularly limited in specific structure for "sandwiching" the substrate from both sides thereof, and may be, for example, one formed by screwing, spear-engagement, or adhesion.
Effects of the invention
The present invention relates to a vehicle lamp configured such that light emitted from a first light emitting element and a second light emitting element mounted on both surfaces of a substrate is reflected toward the front of the lamp by a first reflecting portion and a second reflecting portion, wherein a first cover portion covering the substrate is disposed on the substrate side of the first reflecting portion, and a first light transmitting portion for allowing light emitted from the first light emitting element to enter the first reflecting portion is formed in the first cover portion. Further, a second cover section covering the substrate is disposed on the second reflecting section on the substrate side of the second reflecting surface section, and a second light transmitting section for allowing light emitted from the second light emitting element to enter the second reflecting surface section is formed in the second cover section. Therefore, the occurrence of stray light such as glare due to light emitted from the first light-emitting element and the second light-emitting element can be effectively suppressed.
Further, since the substrate is sandwiched between the first cover portion and the second cover portion from both sides thereof, it is possible to suppress the occurrence of stray light while minimizing the number of elements.
As described above, according to the present invention, in the vehicle lamp configured to reflect the light emitted from the first light emitting element and the second light emitting element mounted on both surfaces of the substrate toward the front of the lamp by the first reflecting portion and the second reflecting portion, it is possible to suppress the generation of stray light from the first light emitting element and the second light emitting element without increasing the number of elements.
In the above configuration, if the first cover portion and the second cover portion are engaged with each other in a spear shape, the substrate holding structure can be simplified, and thus the vehicle lamp can be easily assembled.
The lance-shaped engagement may be performed directly between the first cover portion and the second cover portion, or may be performed between the first cover portion and the substrate and between the second cover portion and the substrate, respectively.
In this case, if the lance-shaped engagement is performed at a position on the front side of the lamp with respect to the connecting position between the first cover section and the first reflecting surface section and the connecting position between the second cover section and the second reflecting surface section, the following operational effects can be obtained.
That is, in the substrate holding structure, from the viewpoint of avoiding the influence on the light distribution performance of the vehicle lamp, it is preferable to provide the substrate holding structure at a position rearward of the lamp than the respective connection positions, but from the viewpoint of reliably holding the substrate, it is preferable to position the substrate also at a position forward of the lamp than the respective connection positions. In this aspect, since the lance engagement can be performed on the premise that the light distribution performance of the vehicle lamp is hardly adversely affected, the substrate can be held in a state where the substrate is positioned at a plurality of positions on both the front and rear sides of each of the connection positions by performing the lance engagement at a position on the front side of the lamp with respect to each of the connection positions, and the light distribution performance of the vehicle lamp is hardly adversely affected.
In the above configuration, the substrate is arranged in a state in which the surface on which the first light-emitting element is mounted faces upward, and the first reflection portion is arranged on the upper side of the substrate, and in addition, if the first reflection portion is configured to have the heat radiation opening portion, heat generated by lighting of the second light-emitting element can escape to the space above the first reflection portion through the heat radiation opening portion.
In this case, if the first light-emitting elements are arranged in a state where 2 light-distributing elements are arranged in the left-right direction, the first reflecting surface portions and the first cover portions of the first light-emitting elements are arranged in a state where 2 light-distributing elements are arranged in the left-right direction, and the 2 first cover portions are formed so as to extend to the rear side of the lamp with respect to the 2 first reflecting surface portions, as the heat-radiating opening portions, the connection positions of the 2 first reflecting surface portions with respect to the rear side of the lamp with respect to the 2 first reflecting surface portions are formed, heat radiation can be realized without impairing the light distribution function of the first reflecting portions.
Drawings
Fig. 1 is a front view showing a vehicle lamp 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 sectional view taken along line III-III of fig. 1.
Fig. 4 is a front view showing the lamp unit of the vehicle lamp separated into its main components.
Fig. 5 is a rear view showing the lamp unit separated into its main components.
Fig. 6 is a perspective view of the first reflecting portion of the lamp unit as viewed obliquely from below and forward.
Fig. 7 is a view similar to fig. 2 showing a first modification of the above embodiment.
Fig. 8 is a view similar to fig. 4 showing a second modification of the above embodiment.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 is a front view showing a vehicle lamp 10 according to an embodiment of the present invention. In addition, fig. 2 is a sectional view taken along line II-II of fig. 1, and fig. 3 is a sectional view taken along line III-III of fig. 1.
In these figures, the direction indicated by X is "forward" as a lamp (also "forward" as a vehicle). The direction indicated by Y is the "left direction" perpendicular to the "front direction" (the "left direction" as the vehicle, but the "right direction" when the lamp is viewed from the front). The direction shown by Z is "up". The same is true in figures other than these.
As shown in these drawings, the vehicle lamp 10 according to the present embodiment is a two-wheel vehicle headlamp configured to: a lamp unit 20 is assembled in a lamp chamber formed by a lamp body 12 and a transparent translucent cover 14 attached to a front end opening of the lamp body 12. The lamp unit 20 is supported by the lamp body 12 via an alignment mechanism not shown.
Fig. 4 is a front view showing the lamp unit 20 in an exploded manner as main components, and fig. 5 is a rear view thereof.
As shown in these figures, the lamp unit 20 includes: a substrate 50 having a first light-emitting element 22 mounted on an upper surface 50a and a second light-emitting element 24 mounted on a lower surface 50 b; a first reflection unit 30 that reflects light emitted from the first light emitting element 22 toward the front of the lamp; and a second reflection portion 40 that reflects the light emitted from the second light emitting element 24 toward the front of the lamp.
The first light-emitting elements 22 are arranged in a state where 2 light-emitting elements are arranged at a predetermined interval in the left-right direction. The second light emitting element 24 is disposed at the center position in the left-right direction of the lamp at a position on the front side of the lamp with respect to the 2 first light emitting elements 22.
Each of the first light emitting element 22 and the second light emitting element 24 is a white light emitting diode. Each first light-emitting element 22 is disposed such that a light-emitting surface thereof faces directly upward. The second light emitting element 24 is disposed such that a light emitting surface thereof faces directly downward.
A lighting control element (for example, a resistor, a thermistor, or the like) 52 for controlling the lighting of the first light-emitting element 22 and the second light-emitting element 24 is mounted on a rear region of the upper surface 50a of the substrate 50.
The first reflection unit 30 is disposed above the substrate 50, and the second reflection unit 40 is disposed below the substrate 50. Each of the first reflection unit 30 and the second reflection unit 40 has a bilaterally symmetrical shape, and the front surface thereof is subjected to mirror surface treatment by aluminum deposition or the like.
The first reflection unit 30 includes a left-right 1 pair of first reflection surface units 32 and a first cover unit 34.
Each first reflecting surface portion 32 is disposed so as to be positioned above each first light-emitting element 22. Each first reflecting surface portion 32 includes a plurality of reflecting elements 32 s. Each first reflecting surface portion 32 reflects the light emitted from each first light emitting element 22 by the plurality of reflecting elements 32s as light which slightly falls and spreads largely in the left-right direction. Then, a low-beam light distribution pattern is formed by the reflected light from the left and right 1 pairs of first reflecting surface portions 32.
Each first cover portion 34 is disposed on the substrate 50 side (i.e., on the lower side) of each first reflecting surface portion 32 so as to cover the substrate 50. Specifically, each first cover portion 34 includes: a front region 34A extending slightly downward from a lower end edge portion of each first reflecting surface portion 32 toward the front of the lamp and extending horizontally in the left-right direction; and a rear region 34B extending horizontally from the vicinity of the lower end edge of each first reflecting surface portion 32 toward the rear of the lamp.
A first light transmitting portion 34Aa for allowing the light emitted from each first light-emitting element 22 to enter each first reflecting surface portion 32 and for blocking the other light is formed in the front region 34A of each first cover portion 34. Each of the first light transmission portions 34Aa is formed as an opening extending substantially in an arc shape along the lower end edge of each of the first reflecting surface portions 32.
On the other hand, the second reflecting portion 40 includes a second reflecting surface portion 42 and a second cover portion 44.
The second reflecting surface portion 42 is disposed so as to be positioned below the second light emitting element 24. The second reflecting surface part 42 includes a plurality of reflecting elements 42 s. The second reflecting surface portion 42 reflects the light emitted from the second light emitting element 24 by the plurality of reflecting elements 42s as light that spreads greatly in the left-right direction and spreads slightly in the up-down direction. Thereby, an additional light distribution pattern for high beam is formed. Then, the high beam additional light distribution pattern is added to the low beam light distribution pattern formed by the reflected light from the first reflection portion 30, thereby forming a high beam light distribution pattern.
The second cover portion 44 is disposed on the substrate 50 side (i.e., on the upper side) of the second reflecting surface portion 42 so as to cover the substrate 50. Specifically, the second cover portion 44 includes: a front region 44A extending slightly upward from an upper end edge portion of the second reflecting surface portion 42 toward the front of the lamp and extending horizontally in the left-right direction; and a rear region 44B extending horizontally from the vicinity of the upper end edge of each first reflecting surface portion 32 toward the rear of the lamp.
A second light-transmitting portion 44Aa for allowing the light emitted from the second light-emitting element 24 to enter the second reflecting surface portion 42 and blocking the other light is formed in the front region 44A of the second cover portion 44. The second light transmission portion 44Aa is formed as an opening portion extending substantially in an arc shape along the upper end edge of the second reflecting surface portion 42.
The front region 44A of the second cover portion 44 is formed such that the front end surface thereof is positioned substantially directly behind the front end surfaces of the pair of left and right first cover portions 34 in the vicinity of the lower side thereof.
The lamp unit 20 of the present embodiment is configured such that the substrate 50 is sandwiched between the first cover portion 34 and the second cover portion 44 of the second reflection portion 40 from both upper and lower surfaces thereof by the pair of left and right portions 1 of the first reflection portion 30.
A specific structure for holding the substrate 50 will be described below.
Fig. 6 is a perspective view of the first reflection unit 30 as viewed obliquely from below and forward.
As shown in fig. 6, the pair of left and right first cover portions 34 of the first reflection portion 30 are formed in a horizontal plate shape coplanar with each other with the rear region 34B thereof raised by a height relative to the rear end portion of the front region 34A thereof, and flange portions 34Ba bent in the direct downward direction are formed at the rear end portion and the left and right side end portions thereof.
In the rear region 34B, bosses 34Bc protruding downward are formed at three positions, namely, a substantially central portion and rear corner portions on both left and right sides thereof. In the rear region 34B, positioning pins 34Bd projecting downward are formed at two positions located on the inner side in the left-right direction with respect to a pair of left and right bosses 34Bc formed at the rear corners on both left and right sides, respectively.
Further, lance portions 34Ab for lance engagement are formed on the lower surfaces of the front regions 34A of the pair of left and right first cover portions 34 in the first reflection portion 30, respectively. Each lance 34Ab projects downward along a vertical plane extending in the front-rear direction of the lamp, and is formed such that its tip end engagement portions are opposite to each other between the pair of left and right lance 34 Ab.
On the other hand, as shown in fig. 2, 3 and 5, in the second cover portion 44 of the second reflection portion 40, the rear region 44B extends in a plate-like manner along a horizontal plane from the rear end portion of the front region 44A, and flange portions 44Ba bent upward are formed at the rear end edge portion and both left and right side end edge portions thereof.
In the rear region 44B, boss engagement portions 44Bc and screw insertion holes 44Be that engage with the tip end portions of the bosses 34Bc are formed at positions corresponding to the bosses 34Bc of the rear region 34B, respectively. In the rear region 44B, positioning pin insertion holes 44Bd through which the positioning pins 34Bd are inserted are formed at positions corresponding to the positioning pins 34Bd of the rear region 34B, respectively. Further, a plurality of beads 44Bf having the same height as the flange portion 44Ba are formed in the rear region 44B.
In the front region 44A of the second cover portion 44, lance-portion engaging holes 44Ab that engage with the lance portions 34Ab in a lance manner are formed at positions corresponding to the lance portions 34Ab of the front region 34A.
Further, boss insertion holes 50c through which the tip end portions of the bosses 34Bc are inserted are formed in the substrate 50 at positions corresponding to the bosses 34Bc of the rear region 34B, and positioning pin insertion holes 50d through which the positioning pins 34Bd are inserted are formed at positions corresponding to the positioning pins 34Bd of the rear region 34B. Further, lance-shaped portion insertion holes 50e through which the lance portions 34Ab are inserted are formed in the substrate 50 at positions corresponding to the lance portions 34Ab in the front region 34A.
The clamping of the substrate 50 is performed as follows: in a state where the left and right 1 of the first reflection unit 30 are pressed against the first cover portion 34 on the upper surface 50a of the substrate 50 and the second cover portion 44 of the second reflection unit 40 is pressed against the upper surface 50a of the substrate 50, the screw 60 is inserted from below into the boss 34Bc disposed at 3 of the first reflection unit 30 and screwed.
At this time, the positioning pins 34Bd of the first reflection portion 30 are inserted into the positioning pin insertion holes 50d of the substrate 50 and the positioning pin insertion holes 44Bd of the second reflection portion 40, whereby the first reflection portion 30, the substrate 50, and the second reflection portion 40 are positioned in the horizontal direction.
In this state, the lance portions 34Ab of the first reflection part 30 are engaged with the second cover portion 44 via the lance portion insertion holes 50e of the substrate 50 and the lance portion engagement holes 44Ab of the second reflection part 40, whereby the lance engagement of the first reflection part 30 and the second reflection part 40 is performed.
The screw fastening is performed as follows: in a state where the tip end portions of the bosses 34Bc of the first reflecting portion 30 are fitted into the boss engaging portions 44Bc of the second reflecting portion 40, the screws 60 are inserted into the bosses 34Bc through the screw insertion holes 44 Be.
When the screw fastening is completed, in the rear regions 34B of the pair of left and right first cover portions 34 of the first reflection portion 30, the flange portion 34Ba, the base end portions of the boss engagement portions 44Bc, and the base end portions of the positioning pins 34Bd are brought into contact with the upper surface 50a of the substrate 50. In the rear region 44B of the second cover portion 44 of the second reflection portion 40, the flange portion 44Ba, the base end portions of the boss engagement portions 44Bc, and the ribs 44Bf abut against the lower surface 50B of the substrate 50. Thus, the substrate 50 is stably held between the pair of left and right first cover portions 34 of the first reflection portion 30 and the second cover portion 44 of the second reflection portion 40.
The flange portions 34Ba and 44Ba of the first reflection portion 30 and the second reflection portion 40 are positioned on the front side of the lamp with respect to the lighting control member 52 mounted on the upper surface 50a thereof in a state where the substrate 50 is sandwiched therebetween.
In the first reflection portion 30, a heat radiation opening portion 34Bg for allowing heat generated by the second light emitting element 24 to escape to the space above the first reflection portion 30 is formed in a rear region 34B of the pair of left and right first cover portions 34. The heat radiation opening 34Bg is formed at a connecting position between the left and right 1 pairs of first reflecting surface portions 32 in the left and right 1 pairs of rear regions 34B so as to be positioned directly above the second light emitting element 24.
Next, the operation of the present embodiment will be described.
The vehicle lamp 10 according to the present embodiment is configured such that the light emitted from the first light-emitting element 22 and the second light-emitting element 24 mounted on both surfaces of the substrate 50 is reflected toward the front of the lamp by the first reflecting portion 30 and the second reflecting portion 40, but a first cover portion covering the substrate 50 is disposed at a position closer to the substrate 50 than the first reflecting surface portion 32 in the first reflecting portion 30, and a first translucent portion 34Aa for making the light emitted from the first light-emitting element 22 enter the first reflecting surface portion 32 is formed in the first cover portion 34. Further, in the second reflecting portion 40, a second cover portion 44 covering the substrate 50 is disposed at a position closer to the substrate 50 side than the second reflecting surface portion 42, and a second light-transmitting portion 44Aa for allowing the outgoing light from the second light-emitting element 24 to enter the second reflecting surface portion 42 is formed in the second cover portion 44. Therefore, the occurrence of stray light such as glare due to light emitted from the first light-emitting element 22 and the second light-emitting element 24 can be effectively suppressed.
Further, since the substrate 50 is sandwiched between the first cover portion 34 and the second cover portion 44 from both sides thereof, it is possible to suppress the occurrence of stray light while minimizing the number of components.
As described above, according to the present embodiment, in the vehicular lamp 10 configured to reflect the light emitted from the first light-emitting element 22 and the second light-emitting element 24 mounted on both surfaces of the substrate 50 toward the front of the lamp by the first reflection portion 30 and the second reflection portion 40, it is possible to suppress the occurrence of stray light from the first light-emitting element 22 and the second light-emitting element 24 without increasing the number of elements.
In this case, in the present embodiment, since the first cover portion 34 and the second cover portion 44 are engaged in a spear shape, the structure for sandwiching the substrate 50 can be simplified, and thus the assembly of the vehicle lamp 10 can be easily performed.
In the present embodiment, the lance-like engagement is performed at a position on the front side of the lamp than the connecting position between the first cover portion 34 and the first reflecting surface portion 32 and the connecting position between the second cover portion 44 and the second reflecting surface portion 42, and therefore, the following operational effects can be obtained.
That is, in the clamping structure of the substrate 50, from the viewpoint of avoiding the influence on the light distribution performance of the vehicle lamp 10, it is preferable to provide the clamping structure of the substrate 50 at a position rearward of the lamp than the respective connection positions, but from the viewpoint of reliably clamping the substrate 50, it is preferable to position the substrate 50 also at a position forward of the lamp than the respective connection positions. In this regard, since the spear engagement can be performed on the premise that the light distribution performance of the vehicle lamp 10 is hardly adversely affected, the substrate 50 can be held in a state where the substrate is positioned at a plurality of positions on both the front and rear sides of each of the connection positions by performing the spear engagement at a position on the front side of the lamp with respect to each of the connection positions, and thus the light distribution performance of the vehicle lamp is hardly adversely affected.
Further, since the lance engagement is performed in a state in which the tip engagement portions of the lance portions 34Ab extending along the vertical plane extending in the front-rear direction of the lamp protrude downward from the lance portion engagement holes 44Ab formed in the front region 44A of the second cover portion 44, the presence of the lance portions can be made inconspicuous when the inside of the lamp room is viewed through the light-transmitting cover 14 from the front of the lamp.
In addition, the present embodiment is configured such that: the substrate 50 is disposed in a state where the surface on which the first light-emitting element 22 is mounted faces upward, and the first reflection unit 30 is disposed above the substrate 50, but since the first reflection unit 30 is formed with the heat radiation opening 34Bg, the heat generated by the lighting of the second light-emitting element 24 can escape to the space above the first reflection unit 30 through the heat radiation opening 34 Bg.
In this case, the present embodiment is configured such that: the first light emitting elements 22 are arranged in a state where 2 are arranged in the left-right direction, and the first reflection portion 30 is arranged in a state where 2 are arranged in the left-right direction with the first reflection surface portion 32 and the first cover portion 34 thereof. In addition, 2 first cover portions 34 are formed to extend to the rear side of the lamp than 2 first reflecting surface portions 32. Further, heat radiation opening 34Bg is formed at a connecting position of 2 first reflecting surface parts 32 on the lamp rear side with respect to 2 first reflecting surface parts 32. Therefore, heat dissipation can be achieved without impairing the light distribution function of each first reflection portion 30.
In the present embodiment, the heat radiation opening 34Bg is formed to be positioned directly above the second light emitting element 24, and thus the heat radiation function can be improved to the maximum extent.
In the above embodiment, the case where the substrate 50 is disposed so as to extend along a horizontal plane has been described, but may be disposed so as to extend along a plane inclined with respect to a vertical plane or a horizontal plane.
In the above embodiment, the description has been made of the case where the vehicle lamp 10 is a headlamp for a two-wheel vehicle, but in the case of other types of vehicle lamps, the same operational effects as those of the above embodiment can be obtained by adopting the same configuration as those of the above embodiment.
Next, a modification of the above embodiment will be described.
First, a first modification of the above embodiment will be described.
Fig. 7 is a view similar to fig. 2 showing a vehicle lamp 110 according to the present modification.
As shown in fig. 7, the basic configuration of the vehicle lamp 110 is the same as that of the vehicle lamp 10 according to the above-described embodiment, but the configuration of the first reflecting portion 130 and the second reflecting portion 140 in the lamp unit 120 is partially different from that of the above-described embodiment.
That is, in the present modification, both the first reflection unit 130 and the second reflection unit 140 are made of a transparent member, and the front surfaces thereof are subjected to mirror surface treatment by aluminum vapor deposition or the like.
The second reflection unit 140 of the present modification also includes a second reflection surface portion 142 and a second cover portion 144, similarly to the second reflection unit 40 of the above-described embodiment. A second light transmitting portion 144Aa for allowing the light emitted from the second light emitting element 24 to enter the second reflecting surface portion 142 and for blocking the other light is formed in the front region 144A of the second cover portion 144, but the second light transmitting portion 144Aa is configured as a transparent portion because a part of the surface of the front region 144A is not mirror-finished. The second light transmission portion 144Aa is formed to extend substantially in an arc shape along the upper end edge of the second reflecting surface portion 142, similarly to the second light transmission portion 44Aa of the above-described embodiment.
The first reflection unit 130 of the present modification also includes a pair of left and right first reflection surface portions 132 and a first cover portion 134, as in the first reflection unit 30 of the above-described embodiment. In the front region 134A of each first cover portion 134, a first light-transmitting portion (not shown) is formed for allowing the light emitted from the first light-emitting element (not shown) to enter the first reflecting surface portion 132 and blocking the other light. The first light transmission portion is configured as a transparent portion similar to the second light transmission portion 144 Aa.
In the first reflection unit 130 of the present modification, the same heat radiation opening 134Bg as the heat radiation opening 34Bg of the above embodiment is formed in the rear region 134B of the pair of left and right first cover portions 134.
Even in the case of adopting the configuration of the present modification, the same operational effects as in the case of the above-described embodiment can be obtained.
Next, a second modification of the above embodiment will be described.
Fig. 8 is a view similar to fig. 4, showing the lamp unit 220 of the vehicle lamp according to the present modification exploded into its main components.
As shown in fig. 8, the basic configuration of the lamp unit 220 is the same as the lamp unit 20 of the above embodiment, but the spear-shaped engagement structure is different from that of the above embodiment.
That is, in the present modification, the lance portions 234Ab are formed on the lower surfaces of the front regions 234A of the pair of left and right first cover portions 234 of the first reflection portion 230, respectively. Each lance 234Ab is formed as follows, similarly to each lance 34Ab of the above embodiment: the front end engagement portions of the projecting portions project downward along a vertical plane extending in the front-rear direction of the lamp, and are opposite to each other between the pair of left and right lance portions 234 Ab.
On the other hand, in the present modification, a pair of left and right lance portions 244Ab are formed on the upper surface of the front region 244A of the second cover portion 244 of the second reflection portion 240. Each lance 244Ab is formed to protrude upward along a vertical plane extending in the front-rear direction of the lamp, and its tip end engagement portions are opposite to each other between the pair of left and right lance 244 Ab. At this time, the pair of left and right lance portions 244Ab are formed at positions shifted inward in the left-right direction with respect to the pair of left and right lance portions 234 Ab.
In this modification, the basic configuration of the substrate 250 is also the same as that of the substrate 50 of the above-described embodiment, but lance engaging holes 250f which lance-engage with the lance 234Ab are formed at positions corresponding to the pair of left and right lance portions 234Ab, and lance engaging holes 250g which lance-engage with the lance 244Ab are formed at positions corresponding to the pair of left and right lance portions 244 Ab.
The substrate 250 of the present modification does not have a structure corresponding to the pair of left and right lance insertion holes 50e formed in the substrate 50 of the above-described embodiment. In the second reflecting portion 240 of the present modification, the front region 244A of the second cover portion 244 does not have a structure corresponding to the lance-shaped portion engagement hole 44Ab formed in the front region 44A of the above-described embodiment.
In the present modification, when the pair of left and right first cover portions 234 of the first reflection portion 230 is pressed against the upper surface 250a of the substrate 250, the pair of left and right lance portions 234Ab engage with the pair of left and right lance portion engagement holes 250 f. When the second cover portion 244 of the second reflection portion 240 is pressed against the lower surface 250b of the substrate 250, the pair of left and right lance portions 244Ab engage with the pair of left and right lance portion engagement holes 250 g. Accordingly, the first reflection portion 230 engages with the second reflection portion 240 in a spear shape.
Even in the case of adopting the configuration of the present modification, the same operational effects as in the case of the above-described embodiment can be obtained.
Further, with the configuration of the present modification, in the assembled state of the lamp unit 220, the pair of left and right lance portions 234Ab and the pair of left and right lance portions 244Ab can be completely prevented from being seen from the front side of the lamp.
It should be noted that the numerical values shown as the respective elements in the above-described embodiment and the modifications thereof are merely examples, and it is needless to say that they may be set to different values as appropriate.
The present invention is not limited to the configurations described in the above embodiments and modifications thereof, and various modifications other than the above may be made.
The present application appropriately refers to the disclosure disclosed in japanese patent application No. 2018, filed 24/4 (japanese patent application No. 2018-083322).
Claims (5)
1. A vehicle lamp includes: a substrate having a first light-emitting element mounted on one surface and a second light-emitting element mounted on the other surface; a first reflection unit that reflects light emitted from the first light-emitting element toward the front of the lamp; and a second reflection part which reflects the light emitted from the second light emitting element toward the front of the lamp,
the lamp for a vehicle is characterized in that,
the first reflection unit includes: a first reflecting surface portion for reflecting exit light from the first light emitting element; and a first cover part disposed on the substrate side of the first reflecting surface part so as to cover the substrate,
the second reflection unit includes: a second reflecting surface portion for reflecting the light emitted from the second light emitting element; and a second cover part disposed on the substrate side of the second reflecting surface part so as to cover the substrate,
a first translucent portion for allowing the light emitted from the first light-emitting element to enter the first reflecting surface portion is formed in the first cover portion,
a second transparent portion for allowing the light emitted from the second light emitting element to enter the second reflecting surface portion is formed in the second cover portion,
the substrate is sandwiched by the first cover portion and the second cover portion from both sides of the substrate.
2. The vehicular lamp according to claim 1,
the first cover part and the second cover part are engaged in a spear shape.
3. The vehicular lamp according to claim 2,
the lance-shaped engagement is performed at a position on the front side of the lamp with respect to a connecting position between the first cover section and the first reflecting surface section and a connecting position between the second cover section and the second reflecting surface section.
4. A lamp for a vehicle as claimed in any one of claims 1 to 3,
the substrate is arranged in a state where a surface on which the first light emitting element is mounted faces upward,
the first reflection portion is disposed above the substrate, and a heat dissipation opening is formed in the first reflection portion.
5. The vehicular lamp according to claim 4,
the first light emitting elements are arranged in a state where 2 light emitting elements are arranged in the left-right direction,
the first reflecting part has a structure that the first reflecting surface part and the first cover part are arranged in a state that 2 are arranged in the left-right direction,
the 2 first cover parts are formed to extend to the rear side of the lamp than the 2 first reflecting surface parts,
the heat radiation opening is formed at a position where the 2 first reflecting surface portions are connected to each other on the lamp rear side of the 2 first reflecting surface portions.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018083322A JP7131949B2 (en) | 2018-04-24 | 2018-04-24 | vehicle lamp |
| JP2018-083322 | 2018-04-24 | ||
| PCT/JP2019/015028 WO2019208154A1 (en) | 2018-04-24 | 2019-04-04 | Lighting tool for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112005046A true CN112005046A (en) | 2020-11-27 |
Family
ID=68294085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980027253.9A Pending CN112005046A (en) | 2018-04-24 | 2019-04-04 | Vehicle lamp |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7131949B2 (en) |
| CN (1) | CN112005046A (en) |
| WO (1) | WO2019208154A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021080007A1 (en) | 2019-10-23 | 2021-04-29 | 国立大学法人大阪大学 | Cancer assessment device, cancer assessment method, and program |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307534A (en) * | 2012-03-13 | 2013-09-18 | 汽车照明罗伊特林根有限公司 | Light module of a lighting device of a motor vehicle |
| CN204268300U (en) * | 2014-11-20 | 2015-04-15 | 敏翔股份有限公司 | Lamp for use in vehicle body structure |
| JP6109222B2 (en) * | 2015-03-23 | 2017-04-05 | 本田技研工業株式会社 | Headlight device |
| CN107304998A (en) * | 2016-04-20 | 2017-10-31 | 深圳市光峰光电技术有限公司 | A kind of lighting device and vehicle headlamp apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT510454B1 (en) | 2010-10-14 | 2013-04-15 | Zizala Lichtsysteme Gmbh | LED LIGHT VEHICLE |
| US20120281424A1 (en) * | 2011-05-02 | 2012-11-08 | Peterson Manufacturing Company | Illumination lamp with dual beam functions |
| JP6022510B2 (en) * | 2014-08-04 | 2016-11-09 | 株式会社小糸製作所 | Light source unit and vehicle lamp |
| JP6508924B2 (en) | 2014-12-01 | 2019-05-08 | 株式会社小糸製作所 | Vehicle lamp |
| JP6640544B2 (en) * | 2015-12-14 | 2020-02-05 | 株式会社小糸製作所 | Light emitting module, lamp and circuit board for light emitting element |
-
2018
- 2018-04-24 JP JP2018083322A patent/JP7131949B2/en active Active
-
2019
- 2019-04-04 WO PCT/JP2019/015028 patent/WO2019208154A1/en active Application Filing
- 2019-04-04 CN CN201980027253.9A patent/CN112005046A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307534A (en) * | 2012-03-13 | 2013-09-18 | 汽车照明罗伊特林根有限公司 | Light module of a lighting device of a motor vehicle |
| CN204268300U (en) * | 2014-11-20 | 2015-04-15 | 敏翔股份有限公司 | Lamp for use in vehicle body structure |
| JP6109222B2 (en) * | 2015-03-23 | 2017-04-05 | 本田技研工業株式会社 | Headlight device |
| CN107304998A (en) * | 2016-04-20 | 2017-10-31 | 深圳市光峰光电技术有限公司 | A kind of lighting device and vehicle headlamp apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019192469A (en) | 2019-10-31 |
| JP7131949B2 (en) | 2022-09-06 |
| WO2019208154A1 (en) | 2019-10-31 |
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