JP6599647B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp provided with a light guide.

  Conventionally, in a vehicular lamp such as a tail lamp or a clearance lamp, a configuration including a light guide has been often adopted.

  In “Patent Document 1”, as such a vehicular lamp, light guided through a light guide is internally reflected by a plurality of reflecting elements formed on a rear surface portion and emitted from the front surface portion. What has been configured is described.

  Further, “Patent Document 2” describes such a vehicle lamp in which a light source is arranged for each light guide with respect to a light guide provided with two light guides.

JP 2012-174461 A JP 2014-116142 A

  When the light guide is single like the light guide described in “Patent Document 1”, the irradiation direction of the light emitted from the light guide is limited by the arrangement and shape of the light guide. It is not always easy to form a required light distribution pattern.

  On the other hand, if the light guide described in “Patent Document 2” is provided with two light guide paths, the degree of freedom in the irradiation direction of the emitted light from the light guide can be increased. Since the light source is arranged for each light guide path, the cost of the lamp is increased.

  The present invention has been made in view of such circumstances, and in a vehicular lamp provided with a light source and a light guide that guides light from the light source, the required light distribution is achieved while reducing costs. An object of the present invention is to provide a vehicular lamp that can form a pattern.

  The present invention is intended to achieve the above object by devising the structure of the light guide.

That is, the vehicular lamp according to the present invention is:
In a vehicle lamp comprising a light source and a light guide that guides light from the light source,
The light guide includes a main light path extending in a required direction, and a sub light guide path extending from the main light path,
The sub light guide path includes a branch portion extending from a portion near the end portion of the main optical path and a main body portion extending in the required direction from a tip position of the branch portion,
The main optical path is configured to emit light from the light source guided through the main optical path from an emission surface portion of the main optical path,
The sub light guide path is configured to emit light from the light source guided through the sub light guide path from the exit surface portion of the main body portion of the sub light guide path toward the direction closer to the main light path ,
The main body portion of the sub light guide path is formed with a cross-sectional area smaller than that of the main optical path with respect to a cross section orthogonal to the required direction .

  The type of the “light source” is not particularly limited, and for example, a light emitting diode or a laser diode can be employed.

  The specific arrangement and cross-sectional shape of each of the “primary light path” and “sub light guide path” are not particularly limited.

  A specific configuration for emitting light from a light source guided through each of the “primary light path” and the “sub light guide path” from the emission surface portion is not particularly limited.

  As shown in the above configuration, the vehicular lamp according to the present invention includes a light guide body including a main light path and a sub light guide path extending from the main light path, and each of the main light path and the sub light guide path. The light from the light source that is guided through the light is emitted from the exit surface portion, but at least a part of the sub light guide path is formed with a smaller cross-sectional area than the main light path. An effect can be obtained.

  That is, a main pattern constituting a main part of a light distribution pattern to be formed as a vehicular lamp is formed by light emitted from the main light path, and at least a part of the main light pattern is smaller than the main light path from the sub light guide path. By the emitted light, a sub-pattern that complementarily irradiates a portion to be reinforced with respect to the main pattern can be formed with a required shape and size. In addition, this can be realized while minimizing the number of light sources.

  As described above, according to the present invention, in a vehicular lamp provided with a light source and a light guide that guides light from the light source, a required light distribution pattern can be formed with reduced costs.

  In the above configuration, if the light emission direction from the sub light guide path is set in the horizontal outer direction with respect to the light emission direction from the main light path, the following operational effects can be obtained.

  That is, the light distribution pattern to be formed as a vehicular lamp is often a horizontally long light distribution pattern, but the light emission direction from the sub light guide path is the direction outside in the horizontal direction with respect to the light emission direction from the main light path. By doing so, the brightness of the outer portion in the horizontal direction in the main pattern can be reinforced by the sub-pattern.

  By the way, in the case where a lamp component such as an extension panel is arranged in front of the light guide as a configuration of the vehicle lamp, when trying to form the entire light distribution pattern by the emitted light from the main light path, Part of the emitted light may be blocked or dimmed by the lamp component. On the other hand, if the sub light guide path is configured to emit light in a direction in which the light emitted from the main light path is shielded or dimmed by the lamp component member, the required light distribution is obtained only by the main pattern. A portion lacking as a pattern can be compensated for by forming a sub-pattern, thereby increasing the degree of freedom in arranging the lamp component members.

  In the above configuration, the main optical path is configured to internally reflect the light from the light source guided through the main optical path by a plurality of reflecting elements formed on the rear surface portion, and the sub light guide path is formed on the rear surface portion. The light from the light source guided through the sub light guide path by a plurality of reflecting elements is internally reflected. As the sub light guide path, the light from the light source is reflected in the sub light guide path during the internal reflection. If the reflecting element is configured to be refracted or reflected twice or more, the sub-pattern can be easily formed at a position different from the main pattern.

  In the above configuration, if a lens element that deflects the direction of the emitted light from the exit surface portion is formed on a part of the exit surface portion of the main optical path, the main pattern alone is missing as a required light distribution pattern. Even in the case where the portion cannot be completely compensated by the additional formation of the sub-pattern, this can be compensated by the deflected emitted light from the lens element.

The front view which shows the vehicle lamp which concerns on one Embodiment of this invention The top view which shows the said vehicle lamp III-III sectional view of FIG. (A) is a sectional view taken along line IVa-IVa in FIG. 1, and (b) is a sectional view taken along line IVb-IVb in FIG. (A) is a figure which shows the light distribution pattern formed with the irradiation light from the said vehicle lamp, (b) is the light distribution formed with the irradiation light from the vehicle lamp which concerns on the 1st modification of the said embodiment. Diagram showing pattern The same figure as FIG. 2 which shows the said 1st modification. The figure similar to FIG. 4 which shows the 2nd modification of the said embodiment. The same figure as FIG. 1 which shows the 3rd 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, and FIG. 2 is a plan view thereof. 3 is a cross-sectional view taken along line III-III in FIG.

  As shown in these drawings, the vehicular lamp 10 according to the present embodiment is a clearance lamp provided at the left front end portion of the vehicle, and is a transparent light-transmitting light attached to the lamp body 12 and its front end opening. A light source 30 and a light guide 20 that guides light from the light source 30 are incorporated in the upper part of the lamp chamber formed by the cover 14.

  As for the vehicular lamp 10, in FIG. 2, the direction indicated by X is “front” (also “front” as a vehicle), and the direction indicated by Y is “left direction” (front of the lamp) orthogonal to “front”. "Right direction").

  The light guide 20 is a transparent synthetic resin molded product made of acrylic resin or the like, and includes a main light path 22 and a sub light guide path 24 that branches off from the main light path 22.

  The main light guide path 22 is configured as a light guide column that is curved and extends in the vehicle width direction, and is formed to wrap around from the right end surface 22b on the inner side in the vehicle width direction toward the left end surface 22a on the outer side in the vehicle width direction. ing.

  In the following description, the direction in which the main optical path 22 extends is referred to as “required direction”.

  The light source 30 is a white light emitting diode, and is disposed in a state where the light emitting surface faces the left end surface 22 a of the main optical path 22. The light source 30 is supported by the lamp body 12 via a light source support member (not shown).

  The main light guide path 22 has a circular cross-sectional shape. A plurality of reflecting elements 22s are formed on the rear surface portion 22c of the main optical path 22 so as to protrude rearward from the rear surface portion 22c. The plurality of reflecting elements 22s are arranged side by side at substantially equal intervals in a required direction in a region excluding the vicinity of the left end surface 22a and the right end surface 22b of the main optical path 22.

  The leading optical path 22 causes light from the light source 30 incident on the leading optical path 22 and guided through the leading optical path 22 to be internally reflected by the plurality of reflecting elements 22s, and is a front surface portion that is an output surface portion thereof. The light is emitted from 22d toward the front of the lamp.

  The sub light guide path 24 is composed of a branch part 24A that branches off from the vicinity of the left end part of the main light path 22 and extends obliquely upward, and a main body part 24B that extends in the required direction from the tip position of the branch part 24A.

  The sub light guide path 24 is configured as a light guide column having a circular cross-sectional shape, similar to the main light path 22, but is formed with a smaller cross-sectional area than the main light path 22. A plurality of reflecting elements 24s are formed on the rear surface portion 24c of the main body portion 24B in the sub light guide path 24 so as to protrude rearward from the rear surface portion 24c. The plurality of reflective elements 24s are arranged continuously in the required direction.

  The sub light guide path 24 reflects the light from the light source 30 guided to the main body part 24B through the branching part 24A in the middle of the light guide of the main light path 22 by the plurality of reflection elements 24s, and emits the light. The light is emitted from the front surface portion 24d, which is a surface portion, toward the front of the lamp.

  The sub light guide path 24 is formed so that the position of the right end surface 24 b of the main body portion 24 </ b> B matches the position of the right end surface 22 b of the main optical path 22.

  Between the main light guide path 22 and the sub light guide path 24, a plate-like connection portion 26 that connects the upper end portion of the main light guide path 22 and the lower end portion of the sub light guide path 24 is formed so as to extend in a required direction. In addition, a plate-like flange portion 28 that extends upward from the upper end portion and then extends rearward is formed in the main body portion 24B of the sub light guide path 24 so as to extend in a required direction.

  As shown in FIG. 2, a pair of locking pieces 28a are formed on the rear end surface of the flange portion 28 at two locations in the vehicle width direction. Each of these pair of locking pieces 28a extends rearward, and a lance portion 28a1 is formed on one of them.

  As shown in FIG. 3, in addition to the light guide 20, a headlamp reflector 32, a light guide holder 34, and an extension panel 36 are disposed in the lamp chamber.

  The headlamp reflector 32 is disposed below the light guide 20.

  The light guide holder 34 is disposed on the rear side of the light guide 20. The light guide 20 is supported by the lamp body 12 via the light guide holder 34.

  At that time, the light guide 20 is fixed to the light guide holder 34 by a pair of left and right engaging pieces 28 a formed at two locations of the flange portion 28. Specifically, a pair of left and right locking pieces 28a is inserted into the locking portion 34a formed on the light guide holder 34 from the front side, and the lance portion 28a1 formed on one of the locking pieces 28a is engaged with the locking portion 34a. Fixing is performed by combining.

  The extension panel 36 is an opaque synthetic resin molded product, and is disposed along the translucent cover 14 so as to cover the light guide 20 and the headlamp reflector 32 from the front side. The extension panel 36 is supported by the lamp body 12.

  In the extension panel 36, an opening 36 a is formed in a portion located in front of the headlamp reflector 32, and an opening 36 b is formed in a portion located in front of the light guide 20. At that time, the inner peripheral surface of the opening 36b is subjected to mirror finishing by metal vapor deposition or the like.

  As shown in FIG. 1, the opening 36 a has a shape along the opening shape of the headlamp reflector 32 in the front view of the lamp, and the upper end edge of the opening 36 a swells upward toward the outer side in the vehicle width direction. It is formed as follows.

  On the other hand, the opening 36b is elongated in the vehicle width direction so as to expose most of the main light path 22 in the light guide 20 and cover most of the sub light guide path 24 in front view of the lamp. The lower edge of the opening 36b extends so as to incline obliquely upward toward the outer side in the vehicle width direction as the upper edge of the opening 36a bulges upward toward the outer side in the vehicle width direction. Is formed. For this reason, the main optical path 22 is in a state where the extension panel 36 covers a portion near the end on the outer side in the vehicle width direction.

  4A is a cross-sectional view taken along line IVa-IVa in FIG. 1, and FIG. 4B is a cross-sectional view taken along line IVb-IVb in FIG.

  As shown in FIG. 4A, each of the plurality of reflecting elements 22s formed on the rear surface portion 22c of the main optical path 22 has a wedge-shaped horizontal sectional shape that is gently inclined from the right end surface 22b side to the left end surface 22a side. Have. Each of the reflection elements 22s is configured to internally reflect the light that has been guided through the main optical path 22 and reached the reflection element 22s by total reflection. As a result, the light emitted from the front surface portion 22d of the main light path 22 toward the front of the lamp is diffused in the left-right direction with the direction slightly to the left as the center with respect to the front direction of the lamp.

  As shown in FIG. 4B, the plurality of reflecting elements 24s formed on the rear surface portion 24c of the main body portion 24B in the sub light guide path 24 have a wedge-shaped horizontal cross-sectional shape in which the left and right surfaces are relatively inclined. Yes. Each of the reflecting elements 24s is guided through the main body 24B and reaches the reflecting element 24s on the near side of the reflecting element 24s, and the light once emitted from the reflecting element 24s on the near side to the space on the rear side. After re-entering the reflecting element 24s, the reflecting element 24s is internally reflected by total reflection. As a result, the light emitted toward the front of the lamp from the front surface portion 24d of the sub light guide path 24 becomes light that diffuses in the left-right direction with the direction greatly inclined to the left as compared with the front direction of the lamp. Yes. That is, the light emission direction from the sub light guide path 24 is the direction outside the vehicle width direction with respect to the light emission direction from the main light path 22.

  Further, as shown in FIG. 1, each of the reflecting elements 24s extends in a direction inclined leftward with respect to the vertical direction while being displaced slightly upward from the central position in the vertical direction of the main body 24B. As a result, the light internally reflected by each of the reflecting elements 24s and emitted from the front surface portion 24d of the sub light guide path 24 toward the front of the lamp is set to be slightly downward light.

  As shown in FIG. 3, in the leading optical path 22, the light that is internally reflected by each reflecting element 22 s formed on the rear surface portion 22 c and is emitted from the front surface portion 22 d is diffused in the vertical direction centering on the front direction of the lamp. It becomes light. At this time, the main optical path 22 is in a state where the portion near the end on the outer side in the vehicle width direction is partially covered by the extension panel 36, so that one of the light emitted obliquely downward from the main optical path 22. The portion is shielded from light by the extension panel 36. At this time, the light reaching the extension panel 36 is reflected obliquely upward on the inner peripheral surface of the opening 36b.

  On the other hand, in the main body portion 24B of the sub light guide path 24, the light that is internally reflected by each reflecting element 24s formed on the rear surface portion 24c and is emitted from the front surface portion 24d is inclined downward with respect to the front direction of the lamp. The light diffuses in the vertical direction around the center. For this reason, although most of the sub light guide path 24 is covered with the extension panel 36, the emitted light is not blocked by the extension panel 36.

  FIG. 5A is a diagram showing a light distribution pattern P <b> 1 formed by light emitted from the vehicular lamp 10.

  The light distribution pattern P1 is formed as a combined light distribution pattern of the main pattern P1A and the sub pattern P1B.

  The main pattern P1A is formed as a horizontally long light distribution pattern that extends to the left and right sides of the VV line passing through HV, which is a vanishing point in the front direction of the lamp, in the vertical direction.

  At this time, the main pattern P1A extends substantially evenly on both the upper and lower sides with respect to the HH line passing through the HV in the horizontal direction, and diffuses slightly larger on the left side than on the right side with respect to the VV line. It is formed as a light pattern.

  However, the main pattern P1A has a shape in which the lower left portion is missing. This is because light that is emitted downward from a portion of the main optical path 22 that is closer to the outer end in the vehicle width direction is blocked by the extension panel 36.

  The sub-pattern P1B is formed in a horizontally long shape so as to partially overlap the main pattern P1A at the lower left position of HV. The formation of the sub-pattern P1B compensates for the left bottom missing portion of the main pattern P1A. The sub-pattern P1B is formed in this way because the light emission direction from the sub-light guide path 24 is set to the left side in the horizontal direction with respect to the light emission direction from the main light path 22 and slightly downward. Is.

  Next, the effect of this embodiment is demonstrated.

  The vehicular lamp 10 according to the present embodiment includes a light guide 20 including a main light path 22 and a sub light guide path 24 extending from the main light path 22. The light from the light source 30 guided through each is emitted from the front surface portions 22d and 24d, which are the emission surface portions, but the sub light guide path 24 is formed with a smaller cross-sectional area than the main light path 22. Therefore, the following effects can be obtained.

  That is, the main light P1A constituting the main part of the light distribution pattern P1 to be formed as the vehicular lamp 10 is formed by the light emitted from the main light path 22, and the sub light guide path 24 having a smaller cross-sectional area than the main light path 22. The sub-pattern P1B that complementarily irradiates the portion to be reinforced with respect to the main pattern P1A can be formed with the required shape and size. In addition, this can be realized while minimizing the number of light sources 30.

  As described above, according to the present embodiment, in the vehicular lamp 10 including the light source 30 and the light guide 20 that guides the light from the light source 30, a required light distribution pattern P1 is formed while reducing costs. can do.

  At this time, the light distribution pattern P1 to be formed as the vehicular lamp 10 is a horizontally long light distribution pattern. In the present embodiment, the light emission direction from the sub light guide path 24 is relative to the light emission direction from the main light path 22. Therefore, the brightness of the portion on the outside in the horizontal direction in the main pattern P1A can be reinforced by the sub-pattern P1B.

  Further, the vehicular lamp 10 according to the present embodiment has a configuration in which part of the emitted light from the main optical path 22 is blocked by the extension panel 36 disposed as a lamp component member in front of the light guide 20. However, since the sub light guide path 24 is configured to emit light in a direction in which the light emitted from the main light path 22 is blocked by the extension panel 36, the main pattern P1A alone is missing as the light distribution pattern P1. This can be compensated by forming the sub-pattern P1B. As a result, the degree of freedom of arrangement of the extension panel 36 can be increased.

  Furthermore, the light guide 20 of the present embodiment has a configuration in which light from the light source 30 guided through the main optical path 22 is internally reflected by a plurality of reflecting elements 22s having the main optical path 22 formed on the rear surface portion 22c. In addition, the sub light guide 24 is configured to internally reflect light from the light source 30 guided through the sub light guide 24 by a plurality of reflecting elements 24s formed on the rear surface portion 24c. The light guide path 24 is configured to refract the light from the light source 30 twice in the two reflection elements 24s of the sub light guide path 24 and reflect the inner surface at the time of internal reflection, so that the sub pattern P1B is reflected in the main pattern. It can be easily formed at a position different from P1A.

  In the above embodiment, the main body portion 24B of the main light path 22 and the sub light guide path 24 has been described as having a circular cross-sectional shape, but other cross-sectional shapes (for example, a rectangular cross-sectional shape). It is also possible to have a configuration having

  In the above-described embodiment, the sub light guide path 24 is described as having a cross-sectional area smaller than the main optical path 22 over the entire length thereof, but a part thereof is formed with a cross-sectional area smaller than the main optical path 22. It is also possible.

  In the above-described embodiment, the main body portion 24B of the sub light guide path 24 is described as extending in the required direction at a position away from the main optical path 22, but it may be configured to extend in a direction other than the required direction. is there.

  In the said embodiment, although demonstrated as what was arrange | positioned so that the light guide 20 might be extended in a vehicle width direction, it is set as the structure arrange | positioned so that it may extend in directions other than this (for example, an up-down direction or a diagonal direction). It is also possible.

  In the above embodiment, the extension panel 36 has been described as being opaque. However, even when the extension panel 36 is translucent, a part of the light emitted from the main optical path 22 is dimmed. It is effective to adopt the configuration.

  In the above embodiment, the case where the vehicular lamp 10 is a clearance lamp provided at the left front end portion of the vehicle has been described, but the same configuration as that of the above embodiment is adopted regardless of the location and function provided in the vehicle. By doing so, it is possible to obtain the same effect as the above-described embodiment.

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

  First, a first modification of the above embodiment will be described.

  FIG. 6 is a view similar to FIG. 2 showing the vehicular lamp 110 according to this modification.

  As shown in the figure, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the light guide 120 is partially different from that of the above embodiment.

  That is, the light guide 120 of the present modification has a configuration in which a plurality of lens elements 122 s that deflect the direction of light emitted from the front surface portion 22 d are formed on a part of the front surface portion 22 d of the main optical path 22. ing.

  The plurality of lens elements 122 s are formed so as to protrude forward from the front surface portion 22 d at a position near the right end portion of the main optical path 22. The plurality of lens elements 122s are continuously arranged in the required direction, and all have a wedge-shaped horizontal cross-sectional shape inclined from the left end surface 22a side to the right end surface 22b side.

  As a result, a part of the light that is internally reflected by the plurality of reflecting elements 22s formed on the rear surface portion 22c of the main light path 22 and reaches the front surface portion 22d is transferred from the front surface portion 22d of the main light path 22 to the right in each lens element 122s. The light is deflected and emitted slightly downward in the direction.

  In this modification, the extension panel (not shown) will be described as being configured to shield light emitted downward from the portion of the main optical path 22 near the inner end in the vehicle width direction.

  FIG. 5B is a diagram showing a light distribution pattern P <b> 2 formed by light emitted from the vehicular lamp 110.

  The light distribution pattern P2 is formed as a combined light distribution pattern of the main pattern P2A, the sub pattern P2B, and the auxiliary pattern P2C.

  The main pattern P2A is substantially the same as the main pattern P1A shown in FIG. 5A, but has a shape in which the lower right portion is missing. This is because light that is emitted downward from a portion of the main optical path 22 near the inner end in the vehicle width direction is blocked by the extension panel.

  The sub pattern P2B is the same as the main pattern P1B shown in FIG.

  The auxiliary pattern P2C is formed in a slightly elongated shape so as to partially overlap the main pattern P2A at the lower right position of HV. The formation of the auxiliary pattern P2C compensates for the lower right missing portion of the main pattern P2A. The reason why the auxiliary pattern P2C is formed in this way is that the light emission direction from the plurality of lens elements 122s formed on the front surface portion 22d of the main optical path 22 is set to the right side in the horizontal direction and slightly downward. Is due to.

  By adopting the configuration of the present modification, a portion that is missing as the light distribution pattern P2 only by the main pattern P2A and the subpattern P2B can be compensated by forming the auxiliary pattern P2C. As a result, the degree of freedom of arrangement of the extension panel can be further increased.

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

  FIG. 7 is a view similar to FIG. 4 showing the main part of the vehicular lamp according to this modification.

  As shown in the figure, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the sub light guide 224 is different from that of the above embodiment.

  That is, the sub light guide 224 of the present modification also has a plurality of reflective elements 224s arranged continuously in the required direction on the rear surface 24c of the main body 24B, but each of the reflective elements 224s has a trapezoidal shape. It has a horizontal cross-sectional shape and is formed so as to protrude rearward from the rear surface portion 24c. Each of the reflection elements 224s is configured to reflect the light that has been guided through the main body 24B and reached the reflection element 224s by total reflection in the order of the rear surface and the right slope of the reflection element 224s. Yes. As a result, the light emitted toward the front of the lamp from the front surface portion 24d of the sub light guide path 224 becomes light that diffuses in the left-right direction with the direction largely inclined leftward with respect to the front direction of the lamp. Yes.

  Even in the case of adopting the configuration of the present modification, it is possible to obtain the same operational effects as in the case of the above embodiment.

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

  FIG. 8 is a view similar to FIG. 1 showing a vehicular lamp 310 according to this modification.

  As shown in the figure, the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the light guide 320 is partially different from that of the above embodiment.

  That is, the light guide 320 of the present modification extends in the required direction with the main body portion 324B of the sub light guide 324 in contact with the main light path 322 above the main light path 322. Accordingly, the branch portion 324A of the sub light guide path 324 branches off from the vicinity of the left end portion of the main optical path 322 and extends obliquely upward as in the case of the above embodiment, but its length is the same as that of the above embodiment. It is shorter than the case.

  The configuration of the main light guide 322 and the configuration of the main body 324B of the sub light guide 324 are the same as in the above embodiment.

  That is, the main light path 322 causes the light from the light source 30 incident from the left end surface 322a and guided through the main light path 322 to be internally reflected by the plurality of reflecting elements 322s, and directed from the front portion to the front of the lamp. Are emitted.

  Further, the sub light guide path 324 reflects the light from the light source 30 guided to the main body part 324B via the branching part 324A in the middle of the guiding of the main light path 322 in the plurality of reflection elements 324s, and the front surface part thereof. Is emitted toward the front of the lamp.

  The sub light guide path 324 is formed so that the position of the right end surface 324b of the main body portion 324B coincides with the position of the right end surface 322b of the main light path 322, and the main body portion 324B has the above-described embodiment. The same flange portion 328 is formed.

  Even in the case of adopting the configuration of the present modification, it is possible to obtain the same operational effects as in the case of the above embodiment.

  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.

10, 110, 310 Vehicle lamp 12 Lamp body 14 Translucent cover 20, 120, 320 Light guide 22, 322 Main light guide 22a, 322a Left end surface 22b, 24b, 322b, 324b Right end surface 22c, 24c Rear surface portion 22d, 24d Front (outgoing surface)
22s, 24s, 224s, 322s, 324s Reflective element 24, 224, 324 Sub light guide 24A, 324A Branching portion 24B, 324B Main body portion 26 Connection portion 28, 328 Flange portion 28a Locking piece 28a1 Lance portion 30 Light source 32 For headlamp Reflector 34 Light guide holder 34a Locking portion 36 Extension panel 36a, 36b Opening portion 122s Lens element P1, P2 Light distribution pattern P1A, P2A Main pattern P1B, P2B Sub pattern P2C Auxiliary pattern

Claims (7)

In a vehicle lamp comprising a light source and a light guide that guides light from the light source,
The light guide includes a main light path extending in a required direction, and a sub light guide path extending from the main light path,
The sub light guide path includes a branch portion extending from a portion near the end portion of the main optical path and a main body portion extending in the required direction from a tip position of the branch portion,
The main optical path is configured to emit light from the light source guided through the main optical path from an emission surface portion of the main optical path,
The sub light guide path is configured to emit light from the light source guided through the sub light guide path from the exit surface portion of the main body portion of the sub light guide path toward the direction closer to the main light path ,
The vehicular lamp, wherein the main body portion of the sub light guide path is formed with a cross-sectional area smaller than that of the main optical path with respect to a cross section orthogonal to the required direction .   The vehicular lamp according to claim 1, wherein a light emission direction from the sub light guide path is set in a horizontal outer direction with respect to a light emission direction from the main light path. A lamp component is disposed in front of the light guide,
3. The sub light guide path is configured to emit light in a direction in which light emitted from the main light path is blocked or dimmed by the lamp component member. Vehicle lamps. The leading optical path is configured to internally reflect light from the light source guided through the leading optical path by a plurality of reflecting elements formed on a rear surface portion of the leading optical path.
The sub light guide is configured to internally reflect light from the light source guided through the sub light guide by a plurality of reflecting elements formed on a rear surface portion of the main body of the sub light guide. ,
The said sub light guide is comprised so that the light from the said light source may be refracted or reflected more than once in the reflective element of this sub light guide at the time of the said internal reflection. The vehicle lamp as described.   The vehicular lamp according to any one of claims 1 to 4, wherein a lens element for deflecting the direction of light emitted from the light exit surface is formed on a part of the light exit surface of the main optical path. The required direction is set in a direction curved in the vehicle width direction,
  The sub light guide path is configured as a light guide column disposed above the main light path,
  The sub light guide is configured to internally reflect light from the light source guided through the sub light guide by a plurality of reflecting elements formed on a rear surface portion of the main body of the sub light guide. ,
  6. The vehicle according to claim 1, wherein the reflection element of the sub light guide path is formed at a position displaced upward from a vertical center position of the main body portion of the sub light guide path. Light fixture. The vehicular lamp according to claim 6, wherein the reflection element of the sub light guide path is formed to extend in a direction inclined with respect to the vertical direction.

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