JP2017228490A - Vehicle lighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture capable of simultaneously providing clear liner light emission and surface light emission of less luminance unevenness.SOLUTION: A vehicular lighting fixture includes a light guide body 8 having plate-shaped first light guide portion 20 and second light guide portion 30 arranged substantially in parallel with each other, and the first light guide portion 20 and the second light guide portion 30 are respectively provided with reflection surfaces 22a, 32a on top faces. Thus a part of the light emitted from a light source 2 and entering the first light guide portion 20 is guided in the light guide portion 20 as it is, and emitted from a tip surface 24 to be emitted toward a front part, further a part of the light is reflected by the reflection surface 22a, the reflected light is emitted from a lower face 23 and face-radiated to the reflection surface 32a of the second light guide portion 30 positioned at a lower part, and the radiated light is reflected toward the front part by the reflection surface 32a. As a result, the linear light emission by outgoing light of high brightness is obtained from the tip surface 24 of the light guide portion 20, and the surface light emission by the reflected light of less luminance unevenness is obtained from the reflection surface 32a.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp that uses light emitted from a light guide as irradiation light.

  Conventionally, as this type of vehicle lamp, there is one disclosed in Patent Document 1 under the name of “vehicle lamp”.

  The disclosed vehicle lamp includes a lamp unit including two plate-like light guides and two rod-like light guides in a lamp chamber formed by a lamp body and a light-transmitting cover attached to the lamp body. Is housed.

  As illustrated in FIG. 16, the lamp unit 80 includes a plate-shaped light guide body 85 and a plate including a light guide portion 84 including a flat plate-shaped first light guide portion and a second light guide portion 83 including a curved portion 82. One end side of each of the light guides 86 is supported and fixed to the light guide plate support part 102 of the support plate part 101 of the support block 100, and the vicinity of the incident surfaces 85 a and 86 a on one end side of each of the plate light guides 85 and 86. Further, along the incident surfaces 85a and 86a, a rod-shaped light guide 90 having an emission part facing the incident surfaces 85a and 86a is extended.

  Thereby, the light emitted from the emitting part of the rod-shaped light guide 90 is incident on the plate-shaped light guides 85 and 86 from the respective incident surfaces 85a and 86a of the plate-shaped light guides 85 and 86, and a part of the light enters. The light guides 85 and 86 are guided toward the exit surfaces 85b and 86b on the other end side while being repeatedly reflected on the front and back sides, and emitted from the exit surfaces 85b and 86b toward the front of the lamp.

  At the same time, part of the light incident on the plate-like light guides 85 and 86 from the incident surfaces 85a and 86a of the respective plate-like light guides 85 and 86 is transmitted to the curved portions 82 of the plate-like light guides 85 and 86. The light is diffused by a light diffusing portion 87 formed by a total reflection step, V-groove or dot provided on the back surface, and the diffused light is emitted from the surface of the curved portion 82 to the outside.

JP2015-162363 A

  By the way, in the vehicular lamp having the above-described configuration, the light emitted from the curved portions 82 of the respective plate-like light guides 85 and 86 has uneven brightness such as an aggregate of pseudo-ray light sources or an aggregate of pseudo-point light sources. Therefore, it is difficult to realize surface emission having uniform luminance distribution.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicular lamp that can simultaneously obtain clear line emission and surface emission with less luminance unevenness. .

  In order to solve the above-described problems, an invention described in claim 1 of the present invention includes a light source and a light guide that guides light emitted from the light source and irradiates the light in a predetermined direction. The light body has a plurality of plate-shaped light guide portions arranged in parallel to each other, and has a light reflection surface on at least one same side surface of each of the plurality of light guide portions. Each of the light guides has a light transmitting surface on at least the front end surface and the same other side surface.

  Moreover, the invention described in claim 2 of the present invention is that, in claim 1, the mutually facing side surfaces of the plurality of light guide portions are opened in directions away from each other in a direction away from the tip surface. It is characterized by being.

  Further, according to a third aspect of the present invention, in any one of the first or second aspect, the side surface having the light reflecting surface of each of the plurality of light guides is subjected to a light diffusion treatment. It is characterized by that.

  Moreover, the invention described in claim 4 of the present invention includes a reflector having a light reflecting surface in any one of claims 1 to 3, and the light emitted from the light source is the light reflecting surface of the reflector. The reflected light is reflected and is incident on the light guide.

  Moreover, the invention described in claim 5 of the present invention includes the light diffusion member according to any one of claims 1 to 4, and diffused light transmitted through the light diffusion member is incident on the light guide. It is characterized by this.

  Moreover, the invention described in claim 6 of the present invention is any one of claims 1 to 5, wherein the light source is a semiconductor light emitting element or a light guide rod into which light source light is guided. It is what.

  According to the present invention, it has a plurality of plate-like light guides arranged substantially parallel to each other, and has a light reflecting surface on at least one same side surface of each of the plurality of light guides, A light guide having a light transmission surface on at least the front end surface and the same other side surface of each of the light guide portions was provided.

  As a result, a part of the light emitted from the light source and incident on the light guide part is guided as it is in the light guide part, emitted from the front end surface and irradiated forward, and partly reflected by the reflection surface. Then, the reflected light is emitted from the light transmitting surface and is irradiated onto the light reflecting surface of the adjacent light guide unit, and the irradiated light is reflected forward by the light reflecting surface.

  As a result, high-intensity light is emitted from the front end surface of the light guide, and line emission by this bright emitted light forms the main light distribution of the lamp. At the same time, light with less luminance unevenness can be obtained from the light reflecting surface, and the lamp can have a novel design by this surface emission with uniform luminance.

It is a perspective explanatory view of the vehicular lamp of the first embodiment. Similarly, it is front explanatory drawing of the vehicle lamp of 1st Embodiment. It is AA sectional drawing of FIG. It is an optical path figure of the vehicular lamp of a 1st embodiment. It is a section explanatory view of the vehicular lamp of a 2nd embodiment. It is a section explanatory view of the vehicular lamp of a 3rd embodiment. It is a section explanatory view of the vehicular lamp of a 4th embodiment. It is an optical path figure of the vehicle lamp of 3rd Embodiment. It is a section explanatory view of the vehicular lamp of a 5th embodiment. It is a section explanatory view of the vehicular lamp of a 6th embodiment. It is a section explanatory view of a vehicular lamp of a 7th embodiment. It is sectional explanatory drawing of the vehicle lamp of 8th Embodiment. It is sectional explanatory drawing of the vehicle lamp of 9th Embodiment. It is the photograph which showed the light emission state of the light guide part at the time of lighting a light source. It is sectional explanatory drawing of the vehicle tool using a color filter. It is explanatory drawing of a prior art example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 15 (the same reference numerals are given to the same portions). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

  FIG. 1 is a perspective explanatory view of the vehicular lamp according to the first embodiment as viewed obliquely from above, FIG. 2 is a front explanatory view, and FIG. 3 is an AA cross-sectional explanatory view of FIG.

  A vehicular lamp (hereinafter abbreviated as “lamp”) 1 of the first embodiment has a basic configuration of the lamp of the present invention, and includes a light source 2 and a light guide for guiding light emitted from the light source 2. A light body 8 is provided.

  Among them, the light source 2 is a semiconductor light emitting element such as an LED or a laser.

  The light guide 8 includes a base portion 10 and a plurality of light guide portions (in the present embodiment, the first light guide portion 20) that rise substantially vertically from the base portion 10 and extend forward (in the direction opposite to the light source 2). And the two light guide portions of the second light guide portion 30 located below the two light guide portions 20 and 30 have a plate shape and are arranged substantially parallel to each other. The light guides 20 and 30 are formed so that the thickness gradually decreases from the base part 10 side toward the tip parts 21 and 31 side, and is parallel to a plane including the optical axis X of the light source 2. The upper surfaces 22, 32 are inclined surfaces that gradually approach the lower surfaces 23, 33 from the base portion 10 side toward the distal end portions 21, 31 side with respect to the lower surfaces 23, 33 configured by various surfaces.

  The upper surfaces 22 and 32 of the first light guide unit 20 and the second light guide unit 30 are subjected to rough surface processing (light diffusion processing) such as embossing and matte processing, and aluminum is formed on the rough surfaces. Reflective surfaces 22a and 32a are formed by vapor deposition, silver coating, white coating, or half mirror processing.

  Similarly, on the front surface 11 of the base 10 of the light guide 8 (the surface on which the two light guides 20 and 30 are erected) 11 is also a reflective surface by aluminum deposition, silver coating, white coating or half mirror processing. 11a is formed.

  The light source 2 is disposed so that the optical axis X intersects the front end surface 24 of the first light guide unit 20 located on the upper side.

  Therefore (see FIG. 4 (optical path diagram)), the light emitted from the light source 2 is incident on the base portion 10 of the light guide 8 positioned in front of the back surface 12 as a light incident surface, and the light is guided out of the incident light. The light L1 traveling on the optical axis X and in the vicinity of the optical axis X in the optical body 8 travels straight in the base unit 10 and the first light guide unit 20 as it is and from the front end surface 24 of the first light guide unit 20 to the front. It is emitted toward

  Of the light incident on the base portion 10 of the light guide 8, the light L2 that travels in the direction away from the optical axis X passes through the base portion 10 and the first light guide portion 20. The light is guided toward the reflecting surface 22a of the upper surface 22 of the first light guide unit 20 that is inclined with respect to the optical axis X, and is reflected obliquely forward and downward by the reflecting surface 22a. The second light guide unit 30 emitted from the light source 23 is irradiated onto the reflecting surface 32a of the upper surface 32 that is inclined with respect to the direction of the optical axis X, and the irradiated light is reflected by the reflecting surface 32a. The reflected light is irradiated toward the front.

  On the other hand, part of the light L3 that enters the base portion 10 of the light guide 8 and travels away from the optical axis X is guided through the base portion 10 and the first light guide portion 20. The light enters the lower surface 23 that is parallel to the optical axis X at a relatively shallow angle, and is internally reflected (totally reflected) toward the tip surface 24 by the lower surface 23, and the reflected light is reflected in the first light guide unit 20. The light is guided and emitted from the front end surface 24 to the outside.

  Therefore, when the light source 2 is turned on at night, when the lamp mounted on the vehicle is viewed from the front or obliquely upward from the front, the light source 8 mainly emits light from the front end surface 24 of the first light guide unit 20. 2, high-luminance light is obtained by direct light from the light source 2, which is guided and travels straight through the light guide 8. This bright line emission can form the main light distribution of the lamp. .

  Further, the light is emitted from the light source 2 from the reflection surface 32 a of the second light guide 30 of the light guide 8 and is reflected by the reflection surface 22 a while being guided through the first light guide 20 of the light guide 8. Furthermore, light with less luminance unevenness can be obtained by indirect light reflected by the reflection surface 32a of the second light guide unit 30 by the twice reflection, and the lamp is provided with a novel design by the surface emission with uniform luminance. Can do.

  When the light source 2 is not lit in the daytime, the reflecting surface 11a is reflected from the surfaces of the light guide 8 other than the front end surfaces 24 and 34 of the first light guide 20 and the second light guide 30, respectively. 22a and 32a are viewed. Therefore, the merchantability of the lamp can be enhanced with an excellent appearance during the daytime.

  Next, the lamp of 2nd Embodiment is demonstrated. As shown in FIG. 5 (cross-sectional explanatory view), the lamp of the second embodiment is provided with a light diffusion member 60 between the light source 2 and the light guide 8 with respect to the lamp of the first embodiment. That is different.

  The light diffusing member 60 is a plate-like or sheet-like transparent member formed of a transparent material, which has been subjected to a rough surface treatment such as embossing or satin treatment, or a transparent material in which a light diffusing agent is dispersed. A plate or sheet is used.

  The light emitted from the light source 2 irradiates the inside and outside of the light guide 8 forward along the same optical path as that of the first embodiment, and the first light guide 20 receives the first light from the front end surface 24. Light with a smooth luminance distribution and suppressed glare is emitted with respect to the light emitted from the tip surface 24 of the first light guide unit 20 in the embodiment, and the reflected light by the reflective surface 32a of the second light guide unit 30 is In the first embodiment, the light is highly uniform in luminance with respect to the light reflected by the reflecting surface 32a of the second light guide unit 30 and has little luminance unevenness.

  Thereby, a highly visible light distribution can be obtained by the emitted light (line light emission) from the distal end surface 24 of the first light guide unit 20, and the reflected light (surface light emission) by the reflection surface 32 a of the second light guide unit 30. ) Can provide decorative light that enhances the design.

  Next, the lamp of 3rd Embodiment and 4th Embodiment is demonstrated with reference to each FIG.6 and FIG.7.

  In addition, in the lamp of 3rd Embodiment and 4th Embodiment, in order to demonstrate the optical correlation between the light guide parts of a light guide, from the base part 10 to the 1st light guide part 20, Three plate-like light guides, a second light guide 30 located below the first light guide 20 and a third light guide 40 located below the second light guide 30, are substantially parallel to each other. The light guide 8 provided is used.

  Each of the light guides 20, 30, 40 is formed so that the thickness gradually decreases from the base part 10 side toward the tip parts 21, 31, 41 side, and includes each optical axis X. The upper surfaces 22, 32, and 42 are gradually formed from the base portion 10 side toward the distal end portions 21, 31, and 41, with respect to the lower surfaces 23, 33, and 43 that are configured by planes parallel to the plane. , 43 is an inclined surface approaching.

  In addition, the top surfaces 22, 32, and 42 of the first light guide unit 20, the second light guide unit 30, and the third light guide unit 40 are subjected to rough surface processing such as embossing and matte processing, Reflective surfaces 22a, 32a, and 42a are formed on the rough surface by aluminum vapor deposition, silver coating, white coating, or half mirror processing.

  Furthermore, the light guide 8 has a configuration in which only the first light guide unit 20, the second light guide unit 30, and the third light guide unit 40 protrude from the housing 4 formed of a light shielding material.

  The lamp of 3rd Embodiment and 4th Embodiment differs in having provided the light source for every light guide part of a light guide with respect to the structure of the lamp of 1st Embodiment.

  Among them, the lamp of the third embodiment uses semiconductor light emitting elements for the light sources 2a, 2b, and 2c, and the lamp of the fourth embodiment uses the light emitted from the side surfaces of the light guide bars 3a, 3b, and 3c as the light source. Used as light.

  Therefore (see FIG. 8 (optical path diagram)), when looking at the lamp of the third embodiment, the light emitted from the light source 2a passes through the back surface 12 to the base 10 of the light guide 8 located in the front. Light L1a that enters as a light incident surface and travels on the optical axis X and in the vicinity of the optical axis X in the light guide 8 among the incident light travels straight in the base portion 10 and the first light guide portion 20 as it is. Then, the light is emitted forward from the front end surface 24 of the first light guide unit 20.

  Of the light incident on the base part 10 of the light guide 8, the light L2a that travels in the direction away from the optical axis X passes through the base part 10 and the first light guide part 20. The light is guided toward the reflecting surface 22a of the upper surface 22 of the first light guide unit 20 that is inclined with respect to the optical axis X, and is reflected obliquely forward and downward by the reflecting surface 22a. The second light guide unit 30 emitted from the light source 23 is irradiated onto the reflecting surface 32a of the upper surface 32 that is inclined with respect to the direction of the optical axis X, and the irradiated light is reflected by the reflecting surface 32a. The reflected light is irradiated toward the front.

  On the other hand, a part of the light L3a that enters the base portion 10 of the light guide 8 and travels away from the optical axis X is guided through the base portion 10 and the first light guide portion 20. The light enters the lower surface 23 that is parallel to the optical axis X at a relatively shallow angle, and is internally reflected (totally reflected) toward the tip surface 24 by the lower surface 23, and the reflected light is reflected in the first light guide unit 20. The light is guided and emitted from the front end surface 24 to the outside.

  Similarly, the light emitted from the light source 2b is incident on the base portion 10 of the light guide 8 positioned in the front with the back surface 12 as a light incident surface, and the light guide 8 within the light guide 8 has an optical axis X. The light L1b traveling upward and in the vicinity of the optical axis X travels straight through the base 10 and the second light guide 30 as it is, and is emitted forward from the front end surface 34 of the second light guide 30.

  Of the light incident on the base 10 of the light guide 8, the light L2b that travels in the direction away from the optical axis X passes through the base 10 and the second light guide 30. The light is guided toward the reflection surface 32a of the upper surface 32 of the second light guide unit 30 that is inclined with respect to the optical axis X, and is reflected obliquely forward and downward by the reflection surface 32a. The surface of the third light guide unit 40 emitted from the lower side 33 is irradiated onto the reflecting surface 42a of the upper surface 42 which is inclined with respect to the direction of the optical axis X, and the irradiated light is reflected by the reflecting surface 42a. The reflected light is irradiated toward the front.

  On the other hand, part of the light L3b that enters the base portion 10 of the light guide 8 and travels away from the optical axis X is guided through the base portion 10 and the second light guide portion 30. The light enters the lower surface 33 parallel to the optical axis X at a relatively shallow angle, and is internally reflected (totally reflected) toward the tip surface 34 by the lower surface 33, and the reflected light is reflected in the second light guide 30. Are guided and emitted from the front end surface 34 to the outside.

  Similarly, the light emitted from the light source 2c is incident on the base portion 10 of the light guide body 8 positioned in the front with the back surface 12 as a light incident surface, and the light guide body 8 in the incident light has an optical axis. The light L1c traveling on X and in the vicinity of the optical axis X travels straight through the base 10 and the third light guide 40 as it is, and is emitted forward from the front end surface 44 of the third light guide 40.

  On the other hand, part of the light LL3c that enters the base 10 of the light guide 8 and travels away from the optical axis X is guided through the base 10 and the third light guide 40. The light enters the lower surface 43 parallel to the optical axis X at a relatively shallow angle, and is internally reflected (totally reflected) toward the tip surface 44 by the lower surface 43, and the reflected light is reflected in the third light guide unit 40. The light is guided and emitted from the front end surface 44 to the outside.

  From the above, when the light source 2a, 2b, 2c is turned on at night, when the lamp mounted on the vehicle is viewed from the front or obliquely upward from the front, the front end surface 24 of the first light guide unit 20, the second guide Light sources emitted from the front end surface 34 of the light unit 30 and the front end surface 44 of the third light guide unit 40 are mainly emitted from the light sources 2a, 2b, and 2c and travel straight through the light guide 8 and guided. High brightness light is obtained by direct light from 2a, 2b, 2c, and the main light distribution of the lamp can be formed by this bright line emission.

  Further, the light guide 8 emits light from the light source 2a from the reflection surface 32a of the second light guide 30 and is reflected by the reflection surface 22a while guiding light in the first light guide 20 of the light guide 8. Indirect light is reflected by the second reflection reflected by the reflection surface 32a of the second light guide unit 30 located further below, and is emitted from the light source 2b and guided from the reflection surface 42a of the third light guide unit 40. While being guided through the second light guide part 30 of the light body 8, the light is reflected by the reflection surface 32a and further reflected by the reflection surface 42a of the third light guide part 40 positioned further downward. In any case, light with less luminance unevenness can be obtained, and a novel design can be given to the lamp by this surface emission with uniform luminance.

  As described above, the reflection surface provided on the upper surface of each light guide unit serves to direct light guided in the light guide unit toward the reflection surface of the light guide unit located below, and the light guide unit located above. It also serves the two functions of irradiating the light reflected by the reflective surface forward.

  The lamp of the fourth embodiment is different only in that a light guide rod is used instead of the semiconductor light emitting element as the light source of the lamp of the third embodiment. Therefore, the optical description is omitted.

  Next, the lamp of 5th Embodiment and 6th Embodiment is demonstrated with reference to each FIG.9 and FIG.10.

  The lamps of the fifth and sixth embodiments include the semiconductor light emitting element of the light source 2 and the light guide 8, and the lamp of the fifth embodiment includes the first light guide on the light guide 8. The light source 20 has four light guide parts, that is, a second light guide part 30, a third light guide part 40, and a fourth light guide part 50. The lamp of the sixth embodiment is arranged in the installation direction, and the light guide body 8 includes three light guide parts, a first light guide part 20, a second light guide part 30, and a third light guide part 40. The light source 2 is arranged with its light exit surface 5 oriented in a direction perpendicular to the standing direction of the light guide.

  In both of the lamps of the fifth embodiment and the sixth embodiment, the light emitted from the light source 2 and incident on the base portion 10 of the light guide 8 is internally reflected while being guided through the base portion 10 ( The optical path is controlled by total reflection) and directed to each light guide portion in a direction substantially along the standing direction of each light guide portion.

  Thus, an optical path is formed in each light guide unit as if light from the virtual light source is incident on each light guide.

  In the lamps of the fifth and sixth embodiments, the semiconductor light emitting element of the light source 2 is attached to the heat sink 6, so that the heat generated when the light source 2 is turned on (light emission) is efficiently radiated. Thus, the temperature rise due to the self-heating of the light source 2 itself is suppressed, the decrease in the amount of emitted light due to the decrease in the light emission efficiency of the light source 2 due to the temperature rise is suppressed, and the deterioration of the light source 2 due to the temperature rise of the light source 2 is similarly suppressed. It is possible to suppress the shortening of the light emission lifetime due to. As a result, high reliability and an appropriate amount of irradiation light can be ensured.

  Next, the lamps of the seventh to ninth embodiments will be described with reference to FIGS. 11 to 13 respectively.

  The lamps of the seventh to ninth embodiments replace the base unit 10 of the light guide unit 8 with the function of controlling the optical path in the lamps of the fifth and sixth embodiments. The reflector 7 has a function of optical path control.

  Among them, in the lamp of the seventh embodiment, a reflector 7 that is recessed outward is disposed so as to surround from the side of the light source 2 to the diagonally forward side, and a curved reflecting surface 7 a that focuses the light source 2 on the inner surface of the reflector 7. (For example, a parabolic reflecting surface based on a parabolic surface).

  In the lamp of the eighth embodiment, a reflector 7 that is recessed outward is disposed so as to surround from the side of the light source 2 to the diagonally forward direction, and a multi-focus reflective surface 7 a is provided on the inner surface of the reflector 7.

  In the lamp of the ninth embodiment, a reflector 7 that is recessed outward is opposed to the light exit surface 5 of the light source 2, and a multi-focus reflective surface 7 a is provided on the inner surface of the reflector 7.

  In any of the lamps of the seventh embodiment to the ninth embodiment, the light emitted from the light source 2 and directed to the reflecting surface 7a of the reflector 7 is optically controlled by the reflecting surface 7a, and the reflected light is transmitted to each light guide unit 20. , 30, 40 are directed in a direction substantially along the standing direction of the respective light guides 20, 30, 40.

  Thus, an optical path is formed in each light guide unit as if light from the virtual light source is incident on each light guide.

  In the lamps of the seventh to ninth embodiments, the light source 2 is attached to the heat sink 6 to ensure heat dissipation, and the light diffusing member 60 is provided between the reflector 7 and the light guide 8. Is provided to diffuse the emitted light.

  Although not shown, when a housing is used for the structure of the lamp (the lamps of the third to ninth embodiments), the light is reflected on the protruding surface (front surface) of the light guide portion of the light guide. It is also possible to provide a surface. Thereby, when the light source 2 is not lit in the daytime, the reflecting surface is viewed from a surface other than the front end surface of each light guide, and the merchantability of the lamp can be improved by the excellent appearance in the daytime. it can.

  In the lamps of all the embodiments described above, the length and width of the plurality of light guides provided in the light guide can be changed for each light guide. Moreover, a rough surface process can also be given to the front end surface of a light guide part. Thereby, the appearance of the light of the whole lamp | ramp at the time of light source lighting can be set suitably.

  FIG. 14 shows the light emission state of the light guide unit when the light source is turned on in a lamp using a light guide body having a basic structure of the lamp of the seventh embodiment (see FIG. 11) and having a large number of light guide units. It is the photograph which showed.

  From this photograph, bright line emission with high luminance is visually recognized from the front end surface of each light guide unit, and surface emission with little luminance unevenness and high luminance uniformity can be visually recognized from the side reflection surface.

  In addition, it is also possible to use white light sources 2a, 2b, and 2c as the light source and to provide a color filter 65 between the light source and the light guide body 8. In this case, for example, in the color filter 65, a portion located between the light source 2a and the first light guide unit 20 is a red (R) filter, and a portion located between the light source 2b and the second light guide unit 30. Is a green (G) filter, and a portion located between the light source 2c and the third light guide unit 40 is a blue (B) filter, the light emitted from the light source 2a is externally converted into red (R) light. The light emitted from the light source 2b is emitted to the outside as green (G) light, and the light emitted from the light source 2c is emitted to the outside as blue (B) light (see FIG. 15).

  Further, by combining a filter of an appropriate color (including colorless) as the color filter, it is possible to cope with use other than the vehicle lamp in addition to the use as the vehicle lamp.

DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 2 ... Light source 2a ... Light source 2b ... Light source 2c ... Light source 3 ... Light guide rod 3a ... Light guide rod 3b ... Light guide rod 3c ... Light guide rod 4 ... Housing 5 ... Light emission surface 6 ... Heat sink 7 ... Reflector 7a ... Reflecting surface 8 ... Light guide 10 ... Base 11 ... Front 11a ... Reflecting surface 12 ... Back (light incident surface)
DESCRIPTION OF SYMBOLS 20 ... 1st light guide part 21 ... Tip part 22 ... Upper surface 22a ... Reflective surface 23 ... Lower surface 24 ... Tip surface 30 ... 2nd light guide part 31 ... Tip part 32 ... Upper surface 32a ... Reflective surface 33 ... Lower surface 34 ... Tip surface 40 ... 3rd light guide part 41 ... Tip part 42 ... Upper surface 42a ... Reflective surface 43 ... Lower surface 44 ... Tip surface 50 ... 4th light guide part 52a ... Reflective surface 60 ... Light diffusion member 65 ... Color filter

Claims (6)

A light source;
A light guide that guides the emitted light from the light source and irradiates it in a predetermined direction,
The light guide has a plurality of plate-shaped light guides arranged in parallel to each other, and has a light reflecting surface on at least one side surface of each of the plurality of light guides, A vehicular lamp characterized by having a light transmission surface on at least the front end surface of each of the plurality of light guide portions and the same other side surface.   2. The vehicular lamp according to claim 1, wherein side surfaces of the plurality of light guide portions facing each other are opened in a direction away from each other toward a direction away from the front end surface.   3. The vehicular lamp according to claim 1, wherein a side surface having a light reflecting surface of each of the plurality of light guides is subjected to a light diffusion process. 4.   The reflector according to claim 1, further comprising a reflector having a light reflecting surface, wherein the light emitted from the light source is reflected by the light reflecting surface of the reflector, and the reflected light is incident on the light guide. The vehicle lamp according to any one of the above.   The vehicular lamp according to any one of claims 1 to 4, further comprising a light diffusing member, and diffused light transmitted through the light diffusing member is incident on the light guide.   The vehicular lamp according to any one of claims 1 to 5, wherein the light source is a semiconductor light emitting element or a light guide rod into which light source light is guided.