JP2016103318A - Vehicular lighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform an effective restriction of accidental damage of each of light-emitting faces at a vehicular lighting in which a double-plane light-emitting type light source is installed at a transparent printed circuit board.SOLUTION: This invention has such a configuration that the first and second translucent members 40, 50 for injecting emitted lights from the first and second light-emitting faces 30a, 30b of the light source 30 are arranged at both front and rear sides of a printed circuit board 20. With this arrangement as above, it is effectively prevented that the peripheral portions of the first and second light-emitting faces 30a, 30b at the front face 20a and the rear face 20b of the printed circuit board 20 are contacted with hands of an operator or other lamp constituting members or the like and damaged.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicular lamp in which a light source is mounted on a transparent printed circuit board.

  2. Description of the Related Art Conventionally, as a configuration of a vehicular lamp, for example, as described in “Patent Document 1”, a light source of a dual emission type is mounted on a transparent printed board is known.

  The vehicle lamp described in “Patent Document 1” has a configuration in which a printed circuit board is bonded to an inner lens on the front surface thereof.

JP 2013-182872 A

  In order to improve the light distribution performance of a vehicular lamp having a double-sided light source, it is required that the light emitted from each light-emitting surface be emitted accurately in the intended direction.

  However, since the vehicular lamp described in the above-mentioned “Patent Document 1” is protected by the inner lens with respect to the light emitting surface on the front side, it is not damaged in the lamp assembling process or the like. Since the light emitting surface is exposed, there is a risk of scratching in the lamp assembling process or the like. And if it gets damaged like this, there is a possibility that the emitted light from the light emitting surface on the rear side cannot be controlled with high accuracy.

  The present invention has been made in view of such circumstances, and in a vehicular lamp in which a double-sided light-emitting type light source is mounted on a transparent printed board, each light-emitting surface is inadvertently damaged. It is an object of the present invention to provide a vehicular lamp that can effectively suppress the above.

  The present invention is intended to achieve the above object by adopting a configuration in which translucent members are arranged on both sides of a printed circuit board.

That is, the vehicular lamp according to the present invention is
In a vehicular lamp in which a light source is mounted on a transparent printed circuit board,
The light source has a first light emitting surface facing the first surface side of the printed circuit board and a second light emitting surface facing the second surface side of the printed circuit board,
With respect to the printed circuit board, a first light transmissive member is disposed on the first surface side and a second light transmissive member is disposed on the second surface side,
The first light transmissive member is configured to cause the light emitted from the first light emitting surface to enter,
The second light transmissive member is configured to allow light emitted from the second light emitting surface to enter.

  The type of the “vehicle lamp” is not particularly limited. For example, it may be a indicator lamp such as a tail lamp, a stop lamp, a turn signal lamp, or a clearance lamp. It may be a lamp specialized for a function to call attention to a vehicle or the like, or a lamp intended for decoration.

  The specific configuration of the “printed circuit board” is not particularly limited. For example, a configuration in which a transparent or opaque wiring pattern is formed on the surface or inside of a transparent substrate can be employed.

  The type of the “light source” is not particularly limited, and for example, a light emitting diode, an organic EL, or the like can be employed. Further, the number of the “light sources” may be singular or plural.

  The above “facing the first surface” means facing the same direction as the first surface, and the above “facing the second surface” means the same direction as the second surface. It means that you are facing.

  If the “first translucent member” is configured to allow the emitted light from the first light emitting surface to be incident in a state of being disposed on the first surface side of the printed circuit board, the specific arrangement and configuration are as follows. It is not particularly limited.

  If the “second translucent member” is configured to allow the light emitted from the second light emitting surface to be incident in a state of being disposed on the second surface side of the printed circuit board, the specific arrangement and configuration are as follows. It is not particularly limited.

  As shown in the above configuration, the vehicular lamp according to the present invention has a configuration in which a light source of a double-sided light emission type is mounted on a transparent printed circuit board, and first and second light emitting surfaces on both sides of the printed circuit board. Since the 1st and 2nd translucent member which makes the emitted light from enter is arrange | positioned, the following effects can be obtained.

  That is, by arranging the first and second light-transmitting members on both sides of the printed circuit board, the first and second light emitting surfaces or the peripheral portions of the surface of the printed circuit board are configured by the operator's hand and other lamps. It can suppress effectively that a member etc. touch and are damaged.

  As described above, according to the present invention, in the vehicular lamp in which the double-sided light emitting type light source is mounted on the transparent printed circuit board, it is possible to effectively prevent each light emitting surface from being carelessly damaged. . And thereby, the emitted light from the 1st and 2nd light emission surface can be radiate | emitted with a sufficient precision, respectively, respectively, and the workability | operativity of a lamp assembly can be improved.

  In the above configuration, when the printed circuit board is a flexible printed circuit board, the first and second light transmitting members are supported by the lamp component members other than the printed circuit board, and the printed circuit board is the first and / or second light transmitting material. If the structure is mechanically fastened to the optical member, the light source can be positioned without using an adhesive. As a result, it is possible to arrange the light source with high positional accuracy while preventing a part of the printed circuit board from being melted due to the influence of a solvent or the like.

  In this case, a specific configuration for performing “mechanical fastening” is not particularly limited, and for example, fastening by screw fastening, lance engagement, or fitting can be employed.

  In the above configuration, the first light transmissive member is disposed on the front side of the printed circuit board, and the incident surface is formed at a position where the emitted light is incident from the first light emitting surface in the direction perpendicular to the surface. With the configuration, the following operational effects can be obtained.

  That is, since the light distribution of the emitted light from the first light emitting surface has the highest luminous intensity in the direction perpendicular to the surface, the emitted light directed in the direction perpendicular to the surface is incident on the first light transmitting member. By doing so, the emitted light from the first light emitting surface can be used effectively. And thereby, the 1st translucent member can be made to shine brightly in lamp front view.

  In this case, the second light transmissive member is disposed on the rear side of the printed circuit board. At this time, the emitted light from the second light emitting surface is forwarded behind the second light transmissive member. If the reflecting member that reflects toward the surface is disposed and the reflecting surface is formed at a position that is offset from the direction perpendicular to the first light emitting surface, the following effects are obtained. be able to.

  That is, since the reflection surface is offset from the direction perpendicular to the first light emitting surface in this way, the reflected light from the reflection surface can be made difficult to enter the first light transmitting member. Therefore, the accuracy of reflected light control can be increased.

  At this time, if the reflecting surface is formed at a plurality of locations at intervals from each other in a direction away from the direction perpendicular to the first light emitting surface, the plurality of reflecting surfaces appear to shine at a distance in a front view of the lamp. Can be.

  In the above configuration, if the first light transmissive member is formed so as to extend in a strip shape in the required direction, and the light source is arranged at a plurality of locations spaced apart from each other in the required direction, the first light transmitting member can be seen in the front view of the lamp. One translucent member can be made to shine at a plurality of locations in the required direction.

  At this time, if the reflecting surface of the reflecting member is formed so as to extend in a strip shape in the required direction, the reflecting surface also appears to shine at a plurality of locations in the required direction at positions away from the first light transmissive member. Can be.

The front view which shows the vehicle lamp which concerns on one Embodiment of this invention II-II sectional view of FIG. III-III sectional view of FIG. Detail view of part IV in Fig. 2 Detailed view of part V in FIG. The same figure as FIG. 1 which shows the effect | action of the said embodiment. The same figure as FIG. 5 which shows the principal part of the vehicle lamp which concerns on the modification of the said embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a vehicular lamp 10 according to an embodiment of the present invention. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG.

  As shown in these drawings, the vehicular lamp 10 according to the present embodiment is a tail lamp disposed at the right rear end portion of the vehicle, and is a transparent transparent piece attached to the lamp body 12 and its front end opening. In the lamp chamber formed by the light cover 14, a transparent printed circuit board 20, a plurality of light sources 30 mounted on the printed circuit board 20, first and second light transmitting members 40, 50, a reflecting member 60, The extension panel 70 is accommodated.

  In FIG. 3, the direction indicated by X is “front” as the vehicular lamp 10 (“rear” as a vehicle), and the direction indicated by Y is “right direction” orthogonal to “front”.

  The translucent cover 14 extends in a curved manner so as to wrap around from the left end portion thereof (that is, the inner end portion in the vehicle width direction) toward the right end portion.

  The printed circuit board 20 is a flexible printed circuit board formed in a strip shape, and is disposed so as to be elongated in the left-right direction. At this time, the printed circuit board 20 has a straight vertical cross-sectional shape extending in the vertical direction, and extends in a curved manner so as to wrap around from the left end portion toward the right end portion.

  4 is a detailed view of a portion IV in FIG. 2, and FIG. 5 is a detailed view of a portion V in FIG.

  As shown in FIG. 5, the printed circuit board 20 has a configuration in which a wiring pattern 26 is disposed between transparent films 22 and 24 made of a transparent resin (for example, made of PET). At that time, the wiring pattern 26 is formed on the front surface of the transparent film 24 located on the rear side. The wiring pattern 26 is configured by cutting a part of an opaque conductive film formed in a mesh shape. The transparent films 22 and 24 are attached to each other via a transparent adhesive 28.

  As shown in FIG. 3, tabs 20c are formed at the left and right ends of the printed circuit board 20, and the wiring pattern 26 is exposed at the positions of the tabs 20c to form a planar conductive film. . The printed circuit board 20 is electrically connected to the lead wiring 80 extending from a power source (not shown) in the exposed wiring pattern 26.

  Each of the plurality of light sources 30 is a red light emitting diode, and is configured by a light emitting chip having first and second light emitting surfaces 30a and 30b on both front and rear surfaces. The plurality of light sources 30 are arranged at equal intervals in the longitudinal direction of the printed circuit board 20. At this time, the number of the plurality of light sources 30 is set to a value of about 20 to 200, for example.

  Each of the light sources 30 is conductively fixed to the wiring pattern 26 while being disposed between the transparent films 22 and 24. At that time, each light source 30 is arranged with the first light emitting surface 30a facing forward facing the inner surface (that is, the rear surface) of the transparent film 22, and the second light emitting surface 30b facing rear is transparent. It arrange | positions in the state which faced the inner surface (namely, front surface) of the film 24. FIG.

  As shown in FIG. 4, the 1st translucent member 40 is arrange | positioned at the front side of the printed circuit board 20, and is comprised so that the emitted light from the 1st light emission surface 30a may enter.

  The first translucent member 40 is made of a red transparent resin (for example, acrylic resin), and extends in a direction perpendicular to the first light emitting surface 30a (also a direction perpendicular to the second light emitting surface 30b). Has a vertically symmetric vertical cross-sectional shape.

  Specifically, the first light transmissive member 40 has a wedge-shaped vertical cross-sectional shape in which the vertical width gradually decreases as the distance from the first light emitting surface 30a increases to the front side. The front end surface 40a of the first translucent member 40 has a convex arcuate vertical cross-sectional shape, and the rear end surface 40b has a straight vertical cross-sectional shape extending in the vertical direction.

  And this 1st translucent member 40 makes the emitted light from the 1st light emission surface 30a which injects from the back end surface 40b reach the front end surface 40a, after making internal surface reflection directly or on the upper and lower wall surfaces, and this front end surface The light is emitted forward from 40a as light that diffuses somewhat in the vertical direction.

  As shown in FIG. 3, the first translucent member 40 is curved and extends so as to wrap around from the left end portion toward the right end portion, and contacts the front surface 20a of the printed circuit board 20 at the rear end surface 40b. doing.

  On the other hand, as shown in FIG. 4, the 2nd translucent member 50 is arrange | positioned at the back side of the printed circuit board 20, and is comprised so that the emitted light from the 2nd light emission surface 30b may enter.

  The second translucent member 50 is made of a colorless transparent resin (for example, acrylic resin) and has a vertical cross-sectional shape that is vertically symmetric with respect to the straight line L.

  Specifically, the second translucent member 50 has an arcuate vertical cross-sectional shape with a constant thickness centering on the intersection of the second light emitting surface 30b and the straight line L. The front end face 50a of the second light transmissive member 50 has a straight vertical cross section extending in the vertical direction. The vertical width of the second light transmissive member 50 is set to be approximately the same as the vertical width of the first light transmissive member 40.

  The second light transmissive member 50 transmits light emitted from the second light emitting surface 30b backward without being refracted.

  As shown in FIG. 3, the second light transmissive member 50 is curved and extends so as to wrap around from the left end portion toward the right end portion, and the front end surface 50a is formed on the rear surface 20b of the printed circuit board 20. In contact.

  The printed circuit board 20 is supported by the first and second light transmissive members 40 and 50. This support is achieved by mechanically fastening the first and second light transmissive members 40 and 50 to each other at both right and left ends of the printed circuit board 20 sandwiched from the front and rear sides by the first and second light transmissive members 40 and 50. Is done by doing. This mechanical fastening is performed by inserting screws 52 from the rear into each of the flange portions 50c formed at the left and right ends of the second light transmissive member 50 and forming them at both the left and right ends of the first light transmissive member 40. This is done by tightening each of the flange portions 40c.

  As shown in FIG. 5, when the printed circuit board 20 is supported by the first and second translucent members 40 and 50, the lower end edge thereof is substantially the same as the lower end edge of the first and second translucent members 40 and 50. Although it exists in the same position, the upper end edge protrudes largely upwards from the upper end edge of the 1st and 2nd translucent members 40 and 50. FIG.

  This is because the wiring pattern 26 is formed in such a manner that a plurality of light sources 30 are divided into a plurality of regions for each fixed number, and the light sources 30 connected in series for each of these regions are further connected in parallel. This is necessary. In FIG. 5, a conductive film having a wide vertical width located at the lower end is a conductive film connected to the anode common electrode, and four conductive films located above the conductive film are connected to channel electrodes corresponding to the respective regions. It is a conductive film.

  As shown in FIG. 2, the reflecting member 60 is disposed on the rear side of the printed circuit board 20 and is supported by the lamp body 12. The reflecting member 60 is formed from a rear wall portion 60A formed at a position slightly rearward with respect to the vertical direction at a position away from the second translucent member 50 and an outer peripheral edge portion of the rear wall portion 60A. And an annular peripheral wall portion 60B extending forward.

  At that time, as shown in FIG. 3, the rear wall portion 60 </ b> A is curved and extends so as to wrap around from the left end portion toward the right end portion. Further, as shown in FIG. 1, the peripheral wall portion 60 </ b> B has an opening shape that is substantially horizontally long. And in the position below the printed circuit board 20 in the front surface of 60 A of back walls, the reflective surface 60a which reflects the emitted light from the 2nd light emission surface 30b of each light source 30 toward the front is three steps up and down. It is formed in a horizontal stripe shape.

  The reflecting surfaces 60a located at these steps extend in the shape of a band in the horizontal direction with the same vertical width, and are formed at equal intervals. At this time, each of the reflecting surfaces 60a reflects the light emitted from the second light emitting surface 30b toward the front as light that is slightly diffused in the vertical direction. In order to achieve this, each reflecting surface 60a has a convex-curved vertical cross-sectional shape, and is formed such that the degree of subsequent inclination gradually increases in the order of the upper, middle, and lower stages. .

  The front surface of the rear wall 60A is subjected to a reflection process by a metal vapor deposition process on the part where the reflection surface 60a is formed, but the other general part 60b is painted black. Thereby, in the general part 60b, the emitted light from the second light emitting surface 30b is hardly reflected, and a small amount of light reflected by the general part 60b is also compared with the reflected light from the reflecting surface 60a. The light is downward.

  A flange portion 60c is formed at the front end portion of the peripheral wall portion 60B of the reflecting member 60, and the left and right end portions of the second light transmissive member 50 are positioned in the flange portion 60c by screw tightening or adhesion. The first and second light transmitting members 40 and 50 are supported. As shown in FIG. 4, the flange portion 60c is located at the height of the upper end portion of the printed circuit board 20 in the upper wall portion of the peripheral wall portion 60B, and the printed circuit board 20 has its left end portion toward the right end portion. It curves and extends so as to wrap around the rear side 20b.

  The extension panel 70 is disposed in front of the printed circuit board 20 and is supported by the lamp body 12. The extension panel 70 is formed so as to extend in an annular shape along the peripheral wall portion 60 </ b> B of the reflecting member 60. At this time, the extension panel 70 is formed such that the rear end surface 70a is positioned near the flange portion 60c of the peripheral wall portion 60B of the reflecting member 60.

  FIG. 6 is a front view showing the vehicular lamp 10 with a plurality of light sources 30 turned on simultaneously.

  As shown in the figure, when the vehicular lamp 10 is lit when viewed from the front, the images Ia of the first light emitting surfaces 30a of the plurality of light sources 30 are horizontally aligned on the front end surface 40a of the first light transmissive member 40. The images Ib of the second light emitting surfaces 30b of the plurality of light sources 30 appear to shine brightly at substantially equal intervals. The images Ib are reflected on the reflecting surfaces 60a arranged in three upper and lower stages, and are substantially horizontal to each other. It appears to shine at regular intervals. On the other hand, the general portion 60b in the rear wall portion 60A of the reflecting member 60 looks dark.

  Next, the operation of this embodiment will be described.

  As described above in detail, the vehicular lamp 10 according to the present embodiment has a configuration in which the double-sided light source 30 is mounted on the transparent printed circuit board 20. Since the first and second translucent members 40 and 50 that allow the light emitted from the first and second light emitting surfaces 30a and 30b to enter are disposed, the following operational effects can be obtained.

  That is, by arranging the first and second translucent members 40 and 50 on both the front and rear sides of the printed circuit board 20, the periphery of the first and second light emitting surfaces 30a and 30b on the front surface 20a and the rear surface 20b of the printed circuit board 20 It can suppress effectively that a part touches an operator's hand, another lamp component member, etc., and is damaged.

  As described above, according to the present embodiment, in the vehicular lamp 10 in which the double-sided light source 30 is mounted on the transparent printed circuit board 20, the peripheral portions of the first and second light-emitting surfaces 30a and 30b are careless. It is possible to effectively suppress the damage. And thereby, the emitted light from the 1st and 2nd light emission surfaces 30a and 30b can be radiate | emitted with a sufficient precision in a predetermined direction, respectively, and the workability | operativity of a lamp assembly can be improved.

  In the present embodiment, the printed circuit board 20 is configured as a flexible printed circuit board, but the first and second light-transmissive members 40 and 50 are supported by the reflecting member 60 (that is, a lamp component member other than the printed circuit board 20). In addition, since the printed circuit board 20 is mechanically fastened to the first and second light transmitting members 40 and 50, each light source 30 can be positioned without using an adhesive. Thus, it is possible to arrange each light source 30 with high positional accuracy while preventing a part of the printed circuit board 20 from being melted due to the influence of a solvent or the like.

  In this embodiment, the 1st translucent member 40 is arrange | positioned in the front side of the printed circuit board 20, and the rear-end surface 40b as the incident surface injects the emitted light which goes to the surface normal direction from the 1st light emission surface 30a. Since it is formed in the position to be made, the following effects can be obtained.

  That is, since the light distribution of the emitted light from the first light emitting surface 30a has the highest luminous intensity in the direction perpendicular to the surface, the light emitted in the direction perpendicular to the first light transmitting member 40 The light emitted from the first light emitting surface 30a can be used effectively by making it incident on. And thereby, the 1st translucent member 40 can be made to shine brightly in the lamp front view.

  In the present embodiment, a reflective member 60 that reflects the emitted light from the second light emitting surface 30b forward is disposed behind the second light transmissive member 50 disposed on the rear side of the printed circuit board 20. Since the reflecting surface 60a is formed at a position offset downward from the direction perpendicular to the first light emitting surface 30a, the following operational effects can be obtained.

  That is, the reflective surface 60a is offset downward from the direction perpendicular to the first light emitting surface 30a, so that the reflected light from the reflective surface 60a is less likely to enter the first light transmissive member 40. This can improve the accuracy of reflected light control.

  At this time, since the reflecting surface 60a is formed at three positions spaced apart from each other in the vertical direction (that is, the direction away from the direction perpendicular to the first light emitting surface 30a), the three reflecting surfaces 60a are viewed from the front of the lamp. Can appear to shine apart.

  In the present embodiment, the first translucent member 40 is formed so as to extend in a strip shape in the horizontal direction, and the light sources 30 are arranged at a plurality of positions at intervals in the horizontal direction. It is possible to make the image Ia of the first light emitting surface 30a appear to shine at a plurality of locations in the horizontal direction on the front end surface 40a of the first light transmissive member 40.

  In addition, since the reflecting member 60 is formed so that the reflecting surfaces 60a formed in the upper and lower three steps in the wall portion 60A thereafter extend in a strip shape in the horizontal direction, each of the reflecting surfaces 60a is also in the horizontal direction. It is possible to make the image Ib of the second light emitting surface 30b appear to shine at a plurality of locations.

  The printed circuit board 20 of the present embodiment has a larger vertical width than the first and second light transmissive members 40, 50, but the remaining portions of the vertical width are the first and second light transmissive members 40, 50 is arranged so as to protrude upward rather than downward, so that the reflected light from the reflective surface 60a can be prevented from entering the printed circuit board 20, thereby controlling the reflected light. Accuracy can be increased.

  In this embodiment, since the 1st translucent member 40 is comprised with red transparent resin and the 2nd translucent member 50 is comprised with colorless transparent resin, the front end surface 40a of the 1st translucent member 40 is comprised. The brightness of the emitted light from can be relatively weakened. Thereby, it is possible to prevent the image Ia on the first light emitting surface 30a from being seen as being extremely brightly shining with respect to the image Ib on the second light emitting surface 30b.

  In the above embodiment, the second light transmitting member 50 has been described as configured to transmit the light emitted from the second light emitting surface 30b rearward without being refracted, but from the second light emitting surface 30b. It is also possible to be configured to control the deflection of the emitted light (for example, configured to control the deflection of the emitted light from the second light emitting surface 30b downward toward the reflecting surfaces 60a). is there.

  In the above embodiment, the printed circuit board 20 has been described as being arranged so as to extend in the horizontal direction. However, a configuration in which the printed board 20 is arranged so as to extend in other directions is also possible.

  In the said embodiment, although each reflective surface 60a demonstrated as what was formed so that it might extend in parallel with the 1st and 2nd translucent members 40 and 50 in lamp front view, it was in the direction inclined with respect to these. It is also possible to adopt a configuration formed to extend.

  In the above embodiment, the mechanical fastening of the printed circuit board 20 to the first and second light transmitting members 40, 50 is a state in which the printed circuit board 20 is sandwiched by the first and second light transmitting members 40, 50 from both the front and rear sides. In the above description, the first translucent member 40 and the second translucent member 50 are described as being tightened with screws. However, instead of the screw tightening, a configuration may be employed in which lance engagement or fitting is performed. Is possible. Further, the printed circuit board 20 can be mechanically fastened by fitting it into the first light transmissive member 40 (or the second light transmissive member 50). Furthermore, it is also possible to adopt a configuration in which the printed circuit board 20 is supported by the first and / or second light transmitting members 40 and 50 by adhesion or the like instead of mechanical fastening.

  In the above embodiment, the wiring pattern 26 of the printed circuit board 20 has been described as being configured by cutting a part of an opaque conductive film formed in a mesh shape, but other configurations (for example, ITO) (Indium Tin Oxide) can also be employed.

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

  FIG. 7 is a view similar to FIG. 5 showing the main part of the vehicular lamp according to the present modification.

  As shown in the figure, the basic configuration of this modification is the same as that of the above embodiment, but in this modification, the configuration of the printed circuit board 120 and the plurality of light sources 130 mounted thereon is the above. This is different from the case of the embodiment. Accordingly, the configuration of the first light transmissive member 140 is partially different from that of the above embodiment.

  The printed circuit board 120 of this modification is also configured as a transparent and flexible printed circuit board. However, the printed circuit board 120 has a configuration in which the wiring pattern 126A is disposed on the front surface of the transparent film 122 made of transparent resin and the wiring pattern 126B is disposed on the rear surface thereof. Each of the wiring patterns 126A and 126B is configured by cutting a part of an opaque conductive film formed in a mesh like the wiring pattern 26 of the above embodiment.

  Also in the present modification, a plurality of light sources 130 are arranged at equal intervals in the longitudinal direction of the printed circuit board 120. However, each of these light sources 130 is composed of a pair of red light emitting diodes mounted back to back on both front and rear surfaces 120a and 120b of the printed circuit board 120. At this time, the light emitting surface of the red light emitting diode mounted on the front surface 120a of the printed circuit board 120 constitutes the first light emitting surface 130a, and the light emitting surface of the red light emitting diode mounted on the rear surface 120b of the printed circuit board 120 is the second light emitting surface. A light emitting surface 130b is configured.

  The configuration of the rear end surface 140b of the first translucent member 140 of this modification is partially different from the first translucent member 40 of the above embodiment.

  That is, the rear end surface 140b of the first light transmitting member 140 is configured as a front displacement surface 140b1 in which the peripheral portion of each light source 130 is partially displaced forward. Each of the front displacement surfaces 140b1 has a shape obtained by translating the rear end surface 140b forward. As a result, the first light-transmissive member 140 avoids interference with each light source 130 and makes the light emitted from the first light-emitting surface 130a incident from the front displacement surface 140b1. .

  The configuration of the first light transmissive member 140 other than the rear end surface 140b (that is, the configuration of the front end surface 140a and the like) is the same as in the above embodiment.

  Also in this modified example, the first and second light transmitting members 140 and 50 are supported by the reflecting member 60, and the printed circuit board 120 is mechanically fastened to the first and second light transmitting members 140 and 50. .

  In this modification, the first and second light emitting surfaces 130 a and 130 b of each light source 130 are exposed from the front surface 120 a and the rear surface 120 b of the printed circuit board 120, but the first and second sides are disposed on both front and rear sides of the printed circuit board 120. Since the translucent members 140 and 50 are disposed, the first and second light emitting surfaces 130a and 130b are effectively prevented from being damaged by touching the hands of workers or other lamp component members. Can do.

  In addition, the numerical value shown as a specification in the said embodiment and its modification is only an example, and of course, you may set these to a different value suitably.

  The invention of the present application is not limited to the configuration described in the above-described embodiment and its modifications, and a configuration with various other changes can be adopted.

DESCRIPTION OF SYMBOLS 10 Vehicle lamp 12 Lamp body 14 Translucent cover 20, 120 Printed circuit board 20a, 120a Front surface 20b, 120b Rear surface 20c Tab 22, 24, 122 Transparent film 26, 126A, 126B Wiring pattern 28 Adhesive 30, 130 Light source 30a, 130a First light emitting surface 30b, 130b Second light emitting surface 40, 140 First light transmitting member 40a, 50a Front end surface 40b, 140b Rear end surface 40c, 50c, 60c Flange portion 50 Second light transmitting member 52 Screw 60 Reflecting member 60A Rear wall Part 60B Peripheral wall part 60a Reflective surface 60b General part 70 Extension panel 70a Rear end face 80 Lead-out wiring 140b1 Front displacement surface Ia, Ib Image L Straight line

Claims (7)

In a vehicular lamp in which a light source is mounted on a transparent printed circuit board,
The light source has a first light emitting surface facing the first surface side of the printed circuit board and a second light emitting surface facing the second surface side of the printed circuit board,
With respect to the printed circuit board, a first light transmissive member is disposed on the first surface side and a second light transmissive member is disposed on the second surface side,
The first light transmissive member is configured to cause the light emitted from the first light emitting surface to enter,
The vehicular lamp, wherein the second light transmissive member is configured to allow light emitted from the second light emitting surface to enter. The printed circuit board is configured as a flexible printed circuit board,
The first and second light transmissive members are supported by a lamp component member other than the printed board,
2. The vehicular lamp according to claim 1, wherein the printed circuit board is mechanically fastened to the first and / or second light transmissive member. The first translucent member is disposed on the front side of the printed circuit board,
3. The incident surface of the first light transmitting member is formed at a position where outgoing light from the first light emitting surface in a direction perpendicular to the first light emitting surface is incident. 3. The vehicle lamp as described. A reflection member that reflects the emitted light from the second light emitting surface forward is disposed behind the second light transmissive member,
The vehicular lamp according to claim 3, wherein the reflecting surface of the reflecting member is formed at a position offset from a direction perpendicular to the surface of the first light emitting surface.   5. The vehicular lamp according to claim 4, wherein the reflection surface is formed at a plurality of locations at intervals from each other in a direction away from the direction perpendicular to the first light emitting surface. The first translucent member is formed to extend in a strip shape in a required direction,
The vehicular lamp according to any one of claims 1 to 5, wherein the light sources are arranged at a plurality of positions at intervals in the required direction.   The vehicular lamp according to claim 6, wherein the reflecting surface is formed to extend in a strip shape in the required direction.

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