JP2017103173A - Vehicular lighting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting tool including a light guide body, which can secure light quantity at a place necessary for light distribution even when the light guide body includes an inclined portion.SOLUTION: At a rear surface part 30c of a light guide body 30 formed so as to extend in an oblique direction inclined to a horizontal surface, a plurality of reflection elements 30s is formed so as to align in the oblique direction (a direction where a center axial line Ax of the light guide body 30 extends) through boundary lines L. Here, each boundary line L is configured such that an angle θ1 formed by the boundary line L and a vertical direction is set to a smaller value than an angle θ2 formed by the vertical direction and a normal line of the center axial line Ax. Consequently, light subjected to internal reflection by each reflection element 30s is defined as light diffused in a direction of an inclination angle closer to the horizontal direction than the direction where the center axial line Ax extends, to thereby form a light distribution pattern with large degree of spread in the horizontal direction.SELECTED DRAWING: Figure 2

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, the light guided to the light guide is internally reflected by a plurality of reflecting elements formed on the rear surface portion and emitted from the front surface portion. It has been described.

  The light guide of the vehicular lamp described in “Patent Document 1” includes a horizontal portion extending in the horizontal direction and an inclined portion extending in an oblique direction inclined with respect to the horizontal plane.

JP 2013-206875 A

  In the light guide described in the above-mentioned “Patent Document 1”, the boundary lines of the plurality of reflecting elements extend in the direction orthogonal to the oblique direction not only in the horizontal portion but also in the inclined portion. The light distribution pattern formed by the emitted light becomes a light distribution pattern that spreads in an oblique direction, and there is a possibility that the amount of light at a location necessary for light distribution may be insufficient.

  The present invention has been made in view of such circumstances, and in a vehicle lamp equipped with a light guide, it is necessary for light distribution even when the light guide has an inclined portion. It is an object of the present invention to provide a vehicular lamp that can secure the amount of light at a location.

  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 including a light source and a light guide that guides light incident from the light source,
The light guide includes an inclined portion formed to extend in an oblique direction inclined with respect to a horizontal plane,
A plurality of light control elements for emitting the light guided to the inclined part toward the front of the lamp on the surface of the inclined part via the boundary line located between the light control elements adjacent to each other. It is formed to line up in an oblique direction,
At least one of the boundary lines includes a region in which an angle formed by the boundary line with the vertical direction is set to a value smaller than an angle formed by a normal line with respect to the oblique direction at the position where the boundary line is formed. It is characterized by that.

  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 “light guide” does not necessarily have to be formed so as to extend in the oblique direction over its entire length as long as it includes an inclined portion formed so as to extend in an oblique direction inclined with respect to the horizontal plane.

  The “oblique direction inclined with respect to the horizontal plane” means a direction other than the horizontal direction and the vertical direction.

  The “inclined portion” may be formed so as to extend linearly or may be formed so as to extend in a curved shape.

  The above-mentioned “light control element” is not particularly limited as long as it is an element that can be controlled to emit the light guided to the inclined portion toward the front of the lamp, and for example, A reflective element formed on the rear surface portion of the inclined portion or a lens element formed on the front surface portion of the inclined portion can be employed.

  The “at least one boundary line” may be set such that at least a part of the boundary line is set to a value smaller than “an angle between the normal to the oblique direction and the vertical direction”. The specific inclination angle of the at least part of the region is not particularly limited.

  In the vehicular lamp according to the present invention, the light guide for guiding the light incident from the light source includes an inclined portion formed to extend in an oblique direction inclined with respect to the horizontal plane, and the surface of the inclined portion is provided. The plurality of light control elements for emitting the light guided to the inclined portion toward the front of the lamp are arranged in the oblique direction via a boundary line located between the adjacent light control elements. In this case, at least one boundary line has a value at which the angle formed by the boundary line with the vertical direction is smaller than the angle formed by the normal line with respect to the oblique direction at the position where the boundary line is formed formed by the vertical direction. Since the region set in (1) is provided, the following effects can be obtained.

  That is, the at least one boundary line is controlled by at least a part of each light control element corresponding thereto because at least a part of the boundary line extends in a direction closer to the vertical direction than the normal line. Thus, the light emitted toward the front of the lamp can be light diffusing in a direction of an inclination angle closer to the horizontal direction than the oblique direction.

  Therefore, compared to the conventional case where each boundary line extends in the direction of the normal line, the light distribution pattern formed by the light emitted from each light control element has a degree of spread in the horizontal direction. The light distribution pattern can be formed as a large light distribution pattern, thereby ensuring the amount of light necessary for light distribution.

  As described above, according to the present invention, in the vehicular lamp provided with the light guide, even if the light guide has an inclined portion, the amount of light necessary for light distribution is ensured. Can do.

  In the above configuration, if the angle formed by the at least one boundary line with the vertical direction is set to a different value depending on each position in the direction in which the boundary line extends, it is formed by the light emitted from each light control element. The degree of spread of the light distribution pattern in the horizontal direction can be finely adjusted.

  At this time, if the at least one boundary line includes a first region extending in the normal direction and a second region extending in a direction closer to the vertical direction than the first region, each light The light distribution pattern formed by the light emitted from the control element can be such that the spread in the horizontal direction is ensured while maintaining the spread in the oblique direction to some extent.

  In the above configuration, if a plurality of reflecting elements are formed on the rear surface portion of the inclined portion as the plurality of light control elements, it is possible to easily make the inclined portion appear to shine substantially uniformly.

  In the above configuration, a plurality of sets of light sources and light guides are arranged in parallel, and a lens for controlling light emitted from the plurality of light guides is arranged in front of the plurality of light guides. With this configuration, a bright light distribution pattern can be easily formed.

The front view which shows the vehicle lamp which concerns on one Embodiment of this invention Detailed view of part II in Fig. 1 III-III sectional view of FIG. The figure which shows the light distribution pattern formed with the irradiation light from the said vehicle lamp The front view which shows the principal part of the 1st and 2nd modification of the said embodiment. The same figure as FIG. 4 which shows the effect | action of the said 1st and 2nd modification. The front view which shows the principal part of the 3rd modification of the said embodiment. Front view showing a fourth modification of the embodiment The same figure as FIG. 4 which shows the effect | action of the said 4th modification. The same figure as FIG. 3 which shows the principal part of the 5th 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 detailed view of a portion II in FIG. 1, and FIG. 3 is a sectional view taken along line III-III in FIG.

  As shown in FIG. 1, a vehicular lamp 10 according to the present embodiment is a clearance lamp provided at a left front end portion of a vehicle, and is formed by a lamp body 12 and a transparent translucent cover 14. The light source 20 and the light guide 30 for guiding the light incident from the light source 20 are accommodated.

  In FIG. 1, the direction indicated by X is the “left direction” along the horizontal plane (“right direction” when viewed from the front of the lamp), and the direction indicated by Y is the “upward direction” orthogonal to the horizontal plane.

  The light guide 30 is a transparent synthetic resin molded product made of acrylic resin or the like, and is configured as a light guide column extending in an oblique direction inclined with respect to the horizontal plane when the lamp is viewed from the front. Specifically, the light guide 30 is formed in a cylindrical shape (the central axis is indicated by Ax in FIGS. 2 and 3), and obliquely upward toward the outer side in the vehicle width direction (direction indicated by X). In addition to being inclined by about 20 to 40 °, it extends linearly in a state where it is inclined somewhat to the rear side. And the left end surface 30a (namely, end surface of the vehicle width direction outer side) and right end surface 30b of this light guide 30 are comprised by the plane orthogonal to the center axis line Ax.

  The light source 20 is a white light emitting diode, and is disposed in a state where the light emitting surface 20 a faces the left end surface 30 a of the light guide 30. The light source 20 causes the light emitted from the light emitting surface 20a to enter the light guide 30 from the left end surface 30a.

  The light guide 30 is formed with a plurality of reflection elements 30s as a plurality of light control elements for emitting the light guided to the light guide 30 from the front surface portion 30d toward the front of the lamp. The plurality of reflective elements 30 s are formed in a region of the rear surface portion 30 c of the light guide 30 except for the vicinity of the left end surface 30 a and the right end surface 30 b.

  The plurality of reflecting elements 30s are formed so as to be continuously arranged at substantially equal intervals in the direction in which the central axis Ax extends through a boundary line L located between the reflecting elements 30s adjacent to each other.

  As shown in FIG. 2, each boundary line L has an angle θ1 that the boundary line L is perpendicular to the lamp front view, and the normal line of the central axis Ax (that is, the normal line to the oblique direction) is the vertical direction. It is set to a value smaller than the angle θ2 formed. Specifically, the angle θ1 is set to a value of about 0 to 10 °, while the angle θ2 is about 20 to 40 °. That is, each boundary line L extends in a direction slightly inclined to the right side (left side in the lamp front view) with respect to the vertical direction. Each reflective element 30s is formed to extend in a strip shape along each boundary line L.

  As shown in FIG. 3, each reflecting element 30 s has a wedge-shaped cross section along a plane including the central axis Ax. At that time, the left side portion (right side portion in FIG. 3) of each reflective element 30s is configured with a steep slope, and the right side portion is configured with a gentle slope. Each reflective element 30 s reflects the light guided to the light guide 30 toward the front on the gentle slope on the right side thereof by total reflection.

  FIG. 4 is a diagram showing a light distribution pattern P <b> 1 formed on a virtual vertical screen arranged in front of the vehicle by light emitted from the vehicle lamp 10.

  As shown in the figure, the light distribution pattern P1 is formed as a light distribution pattern extending slightly horizontally around the point HV near the lamp front direction. At this time, the light distribution pattern P1 is a light distribution pattern that is slightly inclined to the right with respect to the horizontal direction. This is because each reflecting element 30s extends in a direction slightly inclined from the vertical direction to the right side along with each boundary line L, whereby the light internally reflected by each reflecting element 30s spreads in the normal direction of each boundary line L. It is because.

  A light distribution pattern P1 ′ indicated by a two-dot chain line in the drawing is a light distribution pattern formed when each boundary line L extends in the normal direction of the central axis Ax as in the prior art. This light distribution pattern P1 ′ is formed as a light distribution pattern extending in an oblique direction from the upper left to the lower right with the point positioned above HV as the center.

  The light distribution pattern P1 is a light distribution pattern that irradiates a wide area on the left and right sides of the HV compared to the light distribution pattern P1 ′.

  Next, the effect of this embodiment is demonstrated.

  In the vehicular lamp 10 according to the present embodiment, the light guide 30 that guides the light incident from the light source 20 is formed to extend in an oblique direction inclined with respect to the horizontal plane, and the rear surface portion 30c includes the light guide 30. A plurality of reflection elements 30s (that is, light control elements) for emitting the light guided to the light guide 30 toward the front of the lamp are described above via the boundary line L located between the reflection elements 30s adjacent to each other. The boundary lines L are formed so as to be arranged in an oblique direction (that is, a direction in which the central axis Ax of the light guide 30 extends). At this time, each boundary line L has an angle θ1 formed by the boundary line L and the vertical direction. Since the normal of Ax is set to a value smaller than the angle θ2 formed with the vertical direction, the following operational effects can be obtained.

  That is, since each boundary line L extends in a direction closer to the vertical direction than the normal line of the central axis Ax, the light internally reflected by each reflective element 30s is closer to the horizontal direction than the direction in which the central axis Ax extends. The light can be diffused in the direction of the tilt angle.

  Therefore, compared with the conventional case where each boundary line L extends in the normal direction of the central axis Ax, the light distribution pattern P1 formed by the light emitted from each reflective element 30s is horizontally oriented. It is possible to form a light distribution pattern with a large degree of spread of light, and thereby to secure a light amount at a location necessary for light distribution.

  As described above, according to the present embodiment, in the vehicular lamp 10 including the light guide 30, the amount of light necessary for light distribution is ensured even though the light guide 30 is inclined. be able to.

  In the present embodiment, since the plurality of reflection elements 30s are formed on the rear surface portion 30c of the light guide 30 as the plurality of light control elements, the light guide 30 is substantially uniform in the front view of the lamp. It is easily possible to make it appear shiny.

  In the above-described embodiment, the light guide 30 is described as having a circular cross-sectional shape. However, a configuration having a cross-sectional shape other than this (for example, a rectangular cross-sectional shape) is also possible. .

  In the above embodiment, the description has been made on the assumption that the angle θ1 is set to a value smaller than the angle θ2 for all the boundary lines L. However, not all the boundary lines L are set in this way. Good.

  In the above-described embodiment, each boundary line L has been described as extending in a straight line. However, it may be configured to extend in a curved line.

  In the said embodiment, although demonstrated as what the light guide 30 was extended linearly, it is also possible to set it as the structure formed so that one part or all might extend in the shape of a curve.

  In the said embodiment, although the light guide 30 was demonstrated as what was comprised as an inclined part extended in the diagonal direction over the full length, it is also possible that only one part was comprised as an inclined part. is there.

  In the above embodiment, the case where the vehicular lamp 10 is a clearance lamp provided at the left front end of the vehicle has been described, but besides the clearance lamp, a daytime running lamp, a tail lamp, a stop lamp, a turn signal lamp, Regardless of the location and functions provided in the vehicle, such as a room lamp, the same effects as in the above embodiment can be obtained by adopting the same configuration as in the above embodiment.

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

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

  Fig.5 (a) is a front view which shows the principal part of the vehicle lamp 110 which concerns on this modification.

  As shown in FIG. 6A, the basic configuration of the present modification is the same as that of the above embodiment, but the inclination angle of the light guide 130 is different from that of the above embodiment, and accordingly. The inclination angle of each boundary line L is also different from that in the above embodiment.

  That is, the light guide 130 of the present modification extends in a direction closer to the vertical direction than the light guide 30 of the above embodiment. Specifically, the light guide 130 extends linearly in a state where it is inclined about 60 to 80 ° obliquely upward toward the vehicle width direction outer side and is also slightly inclined to the rear side.

  In the light guide 130, the angle θ2 between the normal of the central axis Ax and the vertical direction is about 60 to 80 ° in the lamp front view, whereas the angle between each boundary line L and the vertical direction. θ1 is set to a value of about 30 to 50 °.

  Also in this modification, each reflective element 130s is formed as a reflective element having a wedge-shaped cross-sectional shape so as to extend in a strip shape along the boundary line L. Further, the light source 20 is arranged with its light emitting surface 20 a directed toward the left end surface 130 a of the light guide 130.

  FIG. 6A is a diagram showing a light distribution pattern P2 formed on the virtual vertical screen by the irradiation light from the vehicular lamp 110. FIG.

  As shown in FIG. 5A, the light distribution pattern P2 is formed as a slightly elongated light distribution pattern that is inclined downward to the right with respect to the horizontal direction around a point near HV.

  A light distribution pattern P2 ′ indicated by a two-dot chain line in FIG. 5A is a light distribution pattern formed when each boundary line L extends in the normal direction of the central axis Ax as in the prior art. It is. This light distribution pattern P2 ′ is formed as a slightly elongated light distribution pattern that is largely inclined from the upper left to the lower right with the point positioned above HV as the center.

  The light distribution pattern P2 is a light distribution pattern that irradiates a wide area on the left and right sides of the HV compared to the light distribution pattern P2 ′.

  As described above, also in the vehicular lamp 110 according to the present modification, it is possible to secure the light amount of a portion necessary for light distribution even though the light guide 130 is inclined.

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

  FIG. 5B is a front view showing a main part of the vehicular lamp 210 according to this modification.

  As shown in FIG. 4B, the basic configuration of this modification is the same as that of the first modification, but the angle between each boundary line L of the light guide 230 and the vertical direction is This is different from the case of the first modified example in that the values are set to be different from each other depending on the positions in the extending direction of the boundary line L.

  That is, the light guide 230 of the present modification includes a first region L1 extending in the normal direction of the central axis Ax as each boundary line L, and a direction closer to the vertical direction than the first region (the first modification described above). The second region L <b> 2 extends in the same direction as each boundary line L in the light guide 130. At that time, in each boundary line L, approximately half of the outer side in the vehicle width direction is configured as the first region L1, and the remaining approximately half is configured as the second region L2.

  In this modification as well, each reflective element 230s is formed as a reflective element having a wedge-shaped cross-sectional shape so as to extend in a strip shape along the boundary line L. In other words, each reflective element 230s includes a first region 230s1 extending in parallel with the first region L1 and a second region 230s2 extending in parallel with the second region L2. Further, the light source 20 is arranged with its light emitting surface 20 a directed toward the left end surface 230 a of the light guide 230.

  FIG. 6B is a view showing a light distribution pattern P3 formed on the virtual vertical screen by the irradiation light from the vehicular lamp 210. FIG.

  As shown in FIG. 5B, the light distribution pattern P3 is formed as a slightly elongated light distribution pattern that is inclined downward to the right with respect to the horizontal direction around a point located slightly above HV. . The light distribution pattern P3 has such a shape that the light distribution pattern P2 of the first modified example is slightly expanded upward.

  A light distribution pattern P3 ′ indicated by a two-dot chain line in FIG. 4B is the same light distribution pattern as the light distribution pattern P2 ′.

  The light distribution pattern P3 is a light distribution pattern that irradiates a wide area on the left and right sides of the HV compared to the light distribution pattern P3 ′. In addition, the light distribution pattern P3 is a light distribution pattern in which the spread in the horizontal direction is maintained to some extent and the spread in the vertical direction is also somewhat larger.

  As described above, also in the vehicular lamp 210 according to the present modification, it is possible to secure the light amount of a portion necessary for light distribution even though the light guide 230 is inclined.

  Further, as in this modification, each boundary line L is configured to have a different value depending on each position in the direction in which the boundary line L extends, so that the distribution formed by the light emitted from each reflective element 230s. The degree of spreading of the light pattern in the horizontal direction and the vertical direction can be finely adjusted.

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

  FIG. 7 is a front view showing a main part of the vehicular lamp 310 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 the point that the inclination angle of the light guide 330 is changed in the middle of the light guide 330. This is different from the case of the embodiment, and accordingly, the inclination angle of each boundary line L is also different from the case of the above embodiment.

  That is, in the light guide 330 of the present modification, the first inclined portion 330A near the left end surface 330a is closer to the vertical direction than the light guide 30 of the embodiment (the light guide of the first modification). The second inclined portion 330B near the right end surface 330b extends linearly in substantially the same inclination direction as the light guide 30 of the above-described embodiment, The third inclined portion 330C extends in a curved shape so as to smoothly connect the first and second inclined portions 330A and 330B.

  In the light guide 330, the angle θ1 between the boundary lines L and the vertical direction in the lamp front view is set to a value of about 30 to 50 ° in the first inclined portion 330A, and 0 in the second inclined portion 330B. The value is set to about 10 °, and the third inclined portion 330C is set to a value such that the angle gradually decreases from the first inclined portion 330A to the second inclined portion 330B. That is, the light guide 330 is formed so that each boundary line L extends in a direction closer to the vertical direction than the normal line of the central axis Ax in any of the first to third inclined portions 330A, 330B, and 330C. ing.

  Also in this modification, each reflective element 330s is formed as a reflective element having a wedge-shaped cross-sectional shape so as to extend in a strip shape along the boundary line L. The light source 20 is arranged with its light emitting surface 20 a directed to the left end surface 330 a of the light guide 330.

  The light distribution pattern formed by the irradiation light from the vehicular lamp 310 according to this modification is an intermediate light distribution pattern between the light distribution pattern P1 shown in FIG. 4 and the light distribution pattern P2 shown in FIG. It becomes.

  As described above, also in the vehicular lamp 310 according to the present modification, it is possible to secure the light amount of a portion necessary for light distribution even though the light guide 330 is inclined.

  Next, the 4th modification of the said embodiment is demonstrated.

  FIG. 8 is a front view showing a vehicular lamp 410 according to this modification.

  As shown in the figure, the vehicular lamp 410 according to the present modification includes a light source 20 and a light guide 130 according to the first modification in a lamp chamber formed by a lamp body 412 and a translucent cover 414. It has a configuration in which four sets are housed side by side in the vehicle width direction.

  A plurality of diffusing lens elements 414 s are formed in a vertical stripe shape on the inner surface of the translucent cover 414.

  In the vehicular lamp 410, light from each light source 20 emitted from each light guide 130 is diffused in the left-right direction by each diffusing lens element 414s of the translucent cover 414. That is, the translucent cover 414 of this modification functions as a lens that controls the emitted light from the four light guides 130.

  FIG. 9 is a diagram showing a light distribution pattern P4 formed on the virtual vertical screen by the irradiation light from the vehicle lamp 410. As shown in FIG.

  As shown in the figure, the light distribution pattern P4 is formed as a bright light distribution pattern that spreads in the horizontal direction around a point near HV.

  This light distribution pattern P4 is a horizontally long light distribution pattern in which the brightness of the light distribution pattern P2 of the first modification shown by the two-dot chain line in the figure is increased and then spread to the left and right sides. ing.

  The light distribution pattern P4 is brighter than the light distribution pattern P2. This is because four sets of the light source 20 and the light guide 30 are provided. In addition, the light distribution pattern P4 is formed as a horizontally long light distribution pattern in which the light distribution pattern P2 is expanded on both the left and right sides. The light emitted from each light guide 130 is diffused by each diffusion lens of the translucent cover 414. This is due to diffusion in the left-right direction by the element 414s.

  As described above, also in the vehicular lamp 410 according to the present modification, it is possible to secure the light amount at a location necessary for light distribution, even though each light guide 130 is inclined.

  In particular, by adopting the configuration of this modification, a bright horizontally long light distribution pattern can be easily formed.

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

  FIG. 10 is a view similar to FIG. 3, showing a main part of the vehicular lamp 510 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 surface shape of the left end surface 530a of the light guide 530 is different from that of the above embodiment, and The point that the light-shielding cap 540 is attached to the right end surface 530b of the light guide 530 is also different from the case of the above embodiment.

  That is, the light guide 530 of the present modification has a left end surface 530a that is not a flat surface but a curved surface. Specifically, the left end surface 530a is formed of a concave cylindrical surface at the center portion in the front-rear direction, and a convex cylindrical surface whose both front and rear portions are smoothly connected to the center portion. Thereby, bright light emitted from the light emitting surface 20a of the light source 20 in a direction close to the surface perpendicular direction is incident on the light guide 530 so as to be refracted in the front and rear sides on the left end surface 530a.

  By adopting such a configuration, the light reflected by the reflecting element 530s formed in the portion near the left end surface 530a in the rear surface portion 530c of the light guide 530 can be emitted from the front surface portion 530d. It becomes possible. As a result, the light guide body 530 can be seen more evenly.

  Further, since the light guide body 530 of the present modification has the light shielding cap 540 attached to the right end surface 530b, the light guided to the light guide body 530 and reaching the right end surface 530b is transmitted through the right end surface 530b. It is possible to prevent the total reflection and emission from the front surface portion 530d as stray light.

  Note that, as indicated by a two-dot chain line in the figure, even when a decorative panel 550 that covers a region near the right end surface 530b is disposed in front of the light guide 530, the right end of the light guide 530 is disposed. The light totally reflected by the surface 530b becomes light emitted at a large angle from the front surface portion 530d toward the outside in the vehicle width direction, and it is difficult to block the emitted light. Therefore, it is effective to attach the light shielding cap 540 to the right end surface 530b to shield stray light.

  As the light shielding cap 540, for example, a black resin cap (for example, polypropylene) having a thickness of about 0.3 to 1 mm can be used, but a heat shrinkable tube or the like is used instead of the light shielding cap 540. Is also possible.

  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, 210, 310, 410, 510 Vehicle lamp 12, 412 Lamp body 14 Translucent cover 20 Light source 20a Light emitting surface 30, 130, 230, 330, 530 Light guide 30a, 130a, 230a, 330a, 530a Left end Surface 30b, 330b, 530b Right end surface 30c, 530c Rear surface portion 30d, 530d Front surface portion 30s, 130s, 230s, 330s, 530s Reflective element (light control element)
230s1 1st area | region 230s2 2nd area | region 330A 1st inclination part 330B 2nd inclination part 330C 3rd inclination part 414 Translucent cover (lens)
414s Diffuse lens element 540 Shading cap 550 Decoration panel Ax Center axis L Boundary line L1 First region L2 Second region P1, P2, P3, P4 Light distribution pattern θ1 Angle that the boundary line makes with the vertical direction θ2 Angle between vertical direction

Claims (5)

In a vehicle lamp including a light source and a light guide that guides light incident from the light source,
The light guide includes an inclined portion formed to extend in an oblique direction inclined with respect to a horizontal plane,
A plurality of light control elements for emitting the light guided to the inclined part toward the front of the lamp on the surface of the inclined part via the boundary line located between the light control elements adjacent to each other. It is formed to line up in an oblique direction,
At least one of the boundary lines includes a region in which an angle formed by the boundary line with the vertical direction is set to a value smaller than an angle formed by a normal line with respect to the oblique direction at the position where the boundary line is formed. A vehicular lamp characterized by that.   2. The vehicular lamp according to claim 1, wherein an angle formed by the at least one boundary line with a vertical direction is set to a different value depending on a position in a direction in which the boundary line extends.   The at least one boundary line includes a first region extending in a direction of the normal line and a second region extending in a direction closer to the vertical direction than the first region. The vehicle lamp as described.   The vehicular lamp according to any one of claims 1 to 3, wherein a plurality of reflecting elements are formed on the rear surface of the inclined portion as the plurality of light control elements. A plurality of sets of the light source and the light guide are arranged in parallel,
The vehicular lamp according to any one of claims 1 to 4, wherein a lens for controlling light emitted from the plurality of light guides is disposed in front of the plurality of light guides.

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