JP6805617B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp.

A vehicle lamp attached to a vehicle is known to include a light source and a light guide member that guides light from the light source to a rod-shaped region and emits the light (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-127357

In the light guide member as described above, in order to improve visibility by a pedestrian, the light guide member diffuses light to the side of the vehicle and emits the light. Specifically, the surface of the light guide member has a protrusion shape, and the protrusion shape diffuses light laterally to emit light. However, in such a configuration, since the protrusion shape is arranged on the design surface, there is a problem that the transparency when the light source is not lit is impaired.

The present invention has been made in view of the above, and an object of the present invention is to provide a vehicle lamp capable of improving visibility by a pedestrian while maintaining a transparent feeling when the light source is not lit.

The vehicle lamp according to the present invention has a rod shape, has an end surface arranged at at least one of both ends in the longitudinal direction, and a side surface connecting between the both ends, and is provided so as to extend in the longitudinal direction. A guide having a light emitting surface arranged toward the front in a vehicle mounted state, which is a state of being mounted on a vehicle, and a light guide reflecting surface that reflects light incident from the end surface and guides the light to the exit surface. A light member arranged on at least one end surface of the light guide member, a light source for incidenting the light on the end surface, and an emission surface of the side surfaces in the vehicle-mounted state. A light-shielding member arranged at a position of projecting forward is provided, and the exit surface is provided in a strip shape extending in the longitudinal direction at a central portion in the width direction orthogonal to the longitudinal direction when viewed from the front in the vehicle mounted state. A curved surface that is convex forward and a curved surface that is arranged on at least one side of the curved surface in the width direction and has a flat surface or a curved surface that has a smaller curvature than the curved surface and is derived from the light guide reflecting surface. The light and the light guided by the light guide reflecting surface, which has a side reflecting surface that reflects the light to be emitted toward a portion of the emitting surface opposite to the width direction sandwiching the central portion. The light reflected by the lateral reflecting surface is emitted, and the light guide member has an intersecting portion arranged so as to intersect the horizontal plane in the vehicle-mounted state .

Further, the exit surface may have the lateral reflection surface on both sides in the width direction with respect to the curved surface.

Further, the exit surface may emit the light reflected by one of the side reflection surfaces from the other side reflection surface.

Further, the light guide member has an intersecting portion arranged so as to intersect the horizontal plane in the vehicle-mounted state, and the intersecting portion is the lateral reflective surface arranged inside the vehicle in the vehicle-mounted state. The widthwise dimension of the may be larger than the widthwise dimension of the lateral reflective surface arranged outside the vehicle.

Further, the lateral reflecting surface has a band shape and may extend in the longitudinal direction of the light guide member.

The vehicle lamp according to the present invention has a rod shape, has an end surface arranged at at least one of both ends in the longitudinal direction, and a side surface connecting between the both ends, and is provided so as to extend in the longitudinal direction. A guide having a light emitting surface arranged toward the front in a vehicle mounted state, which is a state of being mounted on a vehicle, and a light guide reflecting surface that reflects light incident from the end surface and guides the light to the exit surface. A light member arranged on at least one end surface of the light guide member, a light source for incidenting the light on the end surface, and an emission surface of the side surfaces in the vehicle-mounted state. A light-shielding member arranged at a position of projecting forward is provided, and the exit surface is provided in a strip shape extending in the longitudinal direction at a central portion in the width direction orthogonal to the longitudinal direction when viewed from the front in the vehicle mounted state. A curved surface that is convex forward and a curved surface that is concave and is arranged on at least one side of the curved surface in the width direction, and the light guided from the light guide reflecting surface is emitted from the emitting surface. It has a side reflecting surface that reflects toward a portion opposite to the width direction sandwiching the central portion, and is reflected by the light guided by the light guide reflecting surface and the side reflecting surface. The light is emitted, and the light guide member has an intersecting portion arranged so as to intersect the horizontal plane in the vehicle-mounted state .

The vehicle lamp according to the present invention has a rod shape, has an end surface arranged at at least one of both ends in the longitudinal direction, and a side surface connecting between the both ends, and is provided so as to extend in the longitudinal direction. A guide having a light emitting surface arranged toward the front in a vehicle mounted state, which is a state of being mounted on a vehicle, and a light guide reflecting surface that reflects light incident from the end surface and guides the light to the exit surface. A light member arranged on at least one end surface of the light guide member, a light source for incidenting the light on the end surface, and an emission surface of the side surfaces in the vehicle-mounted state. A light-shielding member arranged at a position of projecting forward is provided, and the exit surface is provided in a strip shape extending in the longitudinal direction at a central portion in the width direction orthogonal to the longitudinal direction when viewed from the front in the vehicle mounted state. The light emitted from the light guide reflecting surface, which is arranged on at least one side of the plane and the width direction with respect to the plane, is viewed from the front of the emitting surface in the vehicle-mounted state in the longitudinal direction. It has a side reflecting surface that reflects toward a portion opposite to the width direction with a central portion in the width direction orthogonal to the light guide reflecting surface, and the light and the side reflection guided by the light guide reflecting surface. The light reflected by the surface is emitted, and the light guide member has an intersecting portion arranged so as to intersect the horizontal plane in the vehicle-mounted state .

According to the present invention, it is possible to improve visibility by a pedestrian while maintaining a transparent feeling when the light source is not lit.

FIG. 1 is a diagram showing an example of a vehicle lamp according to the present embodiment when viewed from the front side. FIG. 2 is a front view showing an example of a vehicle lamp. FIG. 3 is a diagram showing a configuration along a cross section taken along the line AA in FIG. FIG. 4 is an enlarged view showing a part of the vehicle lamp in FIG. 1. FIG. 5 is an enlarged view showing the configuration of the vehicle lamp when viewed from the direction of arrow C in FIG. 2. FIG. 6 is a diagram showing a direction along the BB cross section in FIG. FIG. 7 is a cross-sectional view showing a vehicle lamp according to a modified example. FIG. 8 is a side view showing a vehicle lamp according to a modified example. FIG. 9 is a side view showing a vehicle lamp according to a modified example. FIG. 10 is a cross-sectional view showing a vehicle lamp according to a modified example. FIG. 11 is a cross-sectional view showing a vehicle lamp according to a modified example.

Hereinafter, embodiments of the vehicle lamp according to the present invention will be described with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

In the following description, each of the front-rear, up-down, and left-right directions is the direction in which the vehicle lamp is mounted on the vehicle arranged on the plane parallel to the horizontal plane (vehicle-mounted state). Therefore, the vertical direction is the vertical direction, and the front-back direction and the left-right direction are directions parallel to the horizontal plane (horizontal direction). In the present embodiment, the direction in which the front is viewed from the driver's seat of the vehicle is the front.

FIG. 1 is a diagram showing an example when the vehicle lamp 20 according to the present embodiment is viewed from the front side. The vehicle lamp 20 shown in FIG. 1 is an automobile lamp such as a tail lamp, a stop lamp, a clearance lamp, and a daytime running lamp. In FIG. 1, a vehicle lighting fixture arranged on the front right side of the vehicle is shown as an example, with the left side in the figure (that is, the right side of the vehicle) as the outside of the vehicle and the right side in the figure (that is, the left side of the vehicle) as the inside of the vehicle. There is. The same explanation can be given for the vehicle lighting fixtures arranged on the left side of the vehicle, except that the left and right sides are reversed. As shown in FIG. 1, the vehicle lamp 20 is housed in the lamp housing 10. The lamp housing 10 may accommodate other vehicle lighting equipment (not shown) such as the headlamp H. The vehicle lamp 20 includes a light source 21, a light guide member 22, and a light shielding member 23.

FIG. 2 is a front view showing an example of the vehicle lamp 20. FIG. 3 is a diagram showing a configuration along a cross section taken along the line AA in FIG. FIG. 4 is an enlarged view showing a part of the vehicle lamp 20 in FIG. 1. FIG. 5 is an enlarged view showing the configuration of the vehicle lamp 20 when viewed from the direction of the arrow C in FIG. 2. FIG. 6 is a diagram showing a direction along the BB cross section in FIG. In addition, in FIGS. 2 to 5, the shape of the light guide member 22 is shown in a linearly stretched state.

As shown in FIGS. 2 to 6, the light source 21 is a semiconductor type light source such as an LED, an OEL, or an OLED (organic EL). The light source 21 has a light emitting surface 21f. The light emitting surface 21f is directed to the light guide member 22. The light source 21 emits light from the light emitting surface 21f toward the light guide member 22 so as to form a lumbar cyan distribution. The light source 21 is arranged so that the light emitting surface 21f faces, for example, one end of the light guide member 22 in the longitudinal direction.

The light guide member 22 guides the light from the light source 21. The light guide member 22 is formed by using a resin material such as acrylic resin or polycarbonate. The light guide member 22 has a rod shape whose cross-sectional shape is circular or substantially circular. Light from the light source 21 is incident on one end surface 22a of the light guide member 22 in the longitudinal direction. In the present embodiment, the light is incident from one end surface 22a of the light guide member 22, but the present invention is not limited to this, and the light is incident from the other end surface 22b of the light guide member 22. It may be configured such that light is incident from both end faces 22a and 22b. Further, when the light guide member 22 has a configuration in which light is incident from one end surface 22a in the longitudinal direction, the other end surface 22b is not limited to a planar shape, for example, a curved surface shape such as a spherical surface or another shape. It may be. The light guide member 22 has an intersecting portion 22S arranged so as to intersect the horizontal plane (see FIG. 1).

The light guide member 22 has a light guide reflecting surface 37 and an exit surface 38 on the side surface 22c. The light guide reflecting surface 37 guides the light incident from the end surface 22a. The light guide reflecting surface 37 is arranged at the rear of the side surface 22c. The light guide reflecting surface 37 has a saw-shaped reflecting surface 32, a planar reflecting surface 33, and a curved reflecting surface 36. The saw-shaped reflective surface 32 is arranged at the rear end of the light guide member 22 as shown in FIG. 3, FIG. 5 or FIG. The saw-shaped reflecting surface 32 is provided on a plurality of saw-blade-shaped protrusions 32b protruding rearward. The protrusions 32b are arranged side by side in the longitudinal direction of the light guide member 22. The saw-shaped reflecting surface 32 reflects the light incident from the end surface 22a on the planar reflecting surface 33. The planar reflecting surface 33 is arranged on both sides of the light guide member 22 in the circumferential direction with respect to the saw-shaped reflecting surface 32. The planar reflecting surface 33 reflects the light reflected by the saw-shaped reflecting surface 32 forward. As shown in FIG. 6, the curved reflecting surface 36 has, for example, a circular or elliptical cross-sectional shape. The curved reflecting surface 36 reflects the light incident from the end surface 22a inside the light guide member 22.

As shown in FIG. 6, the exit surface 38 has an elliptical shape in cross-sectional view. The exit surface 38 is arranged so that the central portion 38a in the axial direction of the long axis AX faces forward. In the present embodiment, the cross-sectional shape of the light guide member 22 is, for example, an elliptical shape over almost the entire surface of the side surface 22c.

The exit surface 38 projects forward from the light-shielding member 23 of the side surface 22c. In the present embodiment, the exit surface 38 has an elliptical cross-sectional shape. In the present embodiment, one side portion (for example, a portion outside the vehicle) in the width direction (direction orthogonal to the longitudinal direction when viewed from the front) with respect to the central portion 38a is set as the first portion 39a, with respect to the central portion 38a. The other side portion in the width direction (for example, the portion inside the vehicle) is referred to as the second portion 39b.

The exit surface 38 has a curved surface 35 and a side reflecting surface 34. The curved surface 35 is provided on a portion of the exit surface 38 including the central portion 38a. Therefore, the curved surface 35 has a shape including the tip of the long axis having an elliptical cross-sectional shape. The curved surface 35 has a band shape and extends in the longitudinal direction of the side surface 22c. The width (dimension in the width direction) h1 of the curved surface 35 may be smaller than the width h2 of the protrusion 32b of the saw-shaped reflecting surface 32. In this case, the light reflected forward on the saw-shaped reflecting surface 32 can be emitted from the curved surface 35 at a high density.

The lateral reflecting surfaces 34 are arranged on both sides in the width direction with respect to the curved surface 35. Hereinafter, when distinguishing between the two lateral reflection surfaces 34, the side reflection surface 34 arranged on the outside of the vehicle is referred to as the side reflection surface 34a, and the side reflection surface 34 arranged on the inside of the vehicle is referred to as the side. It is referred to as a square reflection surface 34b.

The side reflecting surface 34 transmits the light guided by the light guide reflecting surface 37 to a portion 39 (first portion 39a or second portion 39b) of the emitting surface 38 on the opposite side in the width direction across the central portion 38a. Reflect toward. As shown in FIG. 6, the lateral reflecting surface 34 has, for example, a planar cross-sectional shape. The cross-sectional shape of the lateral reflecting surface 34 is not limited to a flat surface, and may be, for example, a curved surface having a curvature smaller than that of the curved surface 35.

That is, the side reflecting surface 34a reflects the light guided by the light guide reflecting surface 37 toward the second portion 39b. In this case, the second portion 39b includes a portion of the curved surface 35 on the side of the side reflecting surface 34b with respect to the central portion 38a, and a side reflecting surface 34b. Further, the side reflecting surface 34b reflects the light guided by the light guide reflecting surface 37 toward the first portion 39a. In this case, the first portion 39a includes a portion of the curved surface 35 on the side of the side reflecting surface 34a with respect to the central portion 38a, and a side reflecting surface 34a.

The width of the side reflecting surface 34 is constant over the entire longitudinal direction of the light guide member 22 (see FIGS. 4, 5 and the like). Further, the width d2 of the side reflecting surface 34b is larger than the width d1 of the side reflecting surface 34a. Therefore, the area of the region that reflects light on the side reflecting surface 34b is larger than that on the side reflecting surface 34a. In the present embodiment, more light is reflected toward the outside of the vehicle than is reflected toward the inside of the vehicle.

Further, the angle formed between the long axis AX and the virtual plane perpendicular to the horizontal plane is different between the side reflecting surface 34a and the side reflecting surface 34b. The angles formed between the side reflecting surface 34a and the side reflecting surface 34b and the virtual plane can be appropriately set according to the widths d1 and d2, the angle at which light is reflected, and the like.

On the exit surface 38, the light guided by the light guide reflection surface 37 is emitted from the curved surface 35. Further, on the exit surface 38, the light reflected by one side reflection surface 34 is emitted from the curved surface 35 or the other side reflection surface 34.

The light-shielding member 23 is arranged along the longitudinal direction of the light guide member 22. The light-shielding members 23 are arranged on both sides of the light guide member 22 in the width direction. The light-shielding member 23 is arranged at a position where a portion (the exit surface 38) including the central portion 38a of the exit surface 38 is projected forward. By providing the light-shielding member 23, the light guide member 22 is in a state where the exit surface 38 is exposed from the light-shielding member 23 when viewed from the front.

When the light source 21 is turned on, the vehicle lamp 20 emits light from the light emitting surface 21f. As shown in FIG. 3, the light L emitted from the light emitting surface 21f is incident on the end surface 22a of the light guide member 22. The light L incident from the end surface 22a is guided by the light guide reflecting surface 37 of the light guide member 22. For example, the light L guided from the end surface 22a toward the saw-shaped reflecting surface 32 is reflected by the saw-shaped reflecting surface 32 and then reflected forward by the planar reflecting surface 33. Of these, for example, the light L that has reached the curved surface 35 is emitted forward from the curved surface 35.

Further, as shown in FIG. 6, for example, the light L1 that has reached the side reflecting surface 34b is reflected toward the first portion 39a on the opposite side in the width direction of the emitting surface 38 with the central portion 38a sandwiched between them. Emit from the curved surface 35 or the side reflecting surface 34a arranged in the first portion 39a. At this time, the light L1 that reaches the first portion 39a arrives in a state that is more toward the side of the vehicle than, for example, the light L that reaches the curved surface 35 without being reflected by the side reflecting surface 34. .. Therefore, the light L1 that has reached the first portion 39a after being reflected by the side reflecting surface 34b is emitted to the side (outside) of the vehicle as compared with the light L.

Similarly, the light that has reached the side reflecting surface 34a (not shown) is reflected toward the second portion 39b on the opposite side of the exit surface 38 in the width direction across the central portion 38a, and is reflected toward the second portion 39b. It emits from the curved surface 35 or the side reflecting surface 34b arranged in. At this time, the light that reaches the second portion 39b arrives in a state that is more toward the side of the vehicle than, for example, the light L that reaches the curved surface 35 without being reflected by the side reflecting surface 34. Therefore, the light that reaches the second portion 39b after being reflected by the side reflecting surface 34a is emitted to the side (inside) of the vehicle as compared with the light L.

As described above, the vehicle lighting tool 20 according to the present embodiment is rod-shaped, has end faces 22a and 22b and side surfaces 22c, is arranged so as to extend in the longitudinal direction, has an exit surface 38 on the side surface 22c, and emits light. Of the light guide member 22 in which the central portion 38a of the surface 38 is arranged toward the front, the light source 21 in which light is incident on at least one of the end surfaces 22a and 22b, and the side surface 22c arranged along the longitudinal direction. A light-shielding member 23 arranged at a position where a portion including the central portion 38a is projected forward is provided, the light guide member 22 has a light guide reflecting surface 37, and the exit surface 38 is a curved surface 35 and lateral. It has a reflecting surface 34, and emits light guided by the light guide reflecting surface 37 and light reflected by the side reflecting surface 34. Therefore, the vehicle lamp 20 can emit more light toward the side in the width direction of the light guide member 22 without providing a protrusion shape on the surface of the light guide member 22. Further, since the lateral reflecting surface 34 has a flat surface or a curved surface having a curvature smaller than that of the curved surface 35, the lateral reflecting surface 34 does not have a portion recognized as a protrusion shape in appearance. Therefore, the transparency when the light source 21 is not lit is maintained. As a result, the vehicle lamp 20 can improve the visibility by pedestrians while maintaining the transparency when the light source 21 is not lit.

Further, since the emission surface 38 of the vehicle lamp 20 has lateral reflection surfaces 34 on both sides in the width direction with respect to the curved surface 35, light can be emitted from the light guide member 22 in a wider range. It will be possible.

Further, since the light emitting surface 38 emits the light reflected by one side reflecting surface 34 from the other side reflecting surface 34, the vehicle lighting tool 20 can surely emit the light in the vehicle width direction. .. This makes it possible to emit light over a wider range from the light guide member 22.

Further, the vehicle lighting tool 20 has an intersecting portion 22S in which the light guide member 22 is arranged so as to intersect the horizontal plane in the vehicle-mounted state, and the crossed portion 22S has a lateral reflection arranged inside the vehicle in the vehicle-mounted state. The widthwise dimension d2 of the surface 34b is larger than the widthwise dimension d1 of the lateral reflective surface 34a located outside the vehicle. Therefore, the area of the region that reflects light on the side reflecting surface 34b is larger than that on the side reflecting surface 34a. As a result, more light is reflected toward the outside of the vehicle than light reflected toward the inside of the vehicle, so that visibility can be further improved.

Further, since the side reflecting surface 34 of the vehicle lamp 20 has a band shape and extends in the longitudinal direction of the light guide member 22, light is emitted in a wide range in the portion extending in the longitudinal direction of the light guide member 22. It becomes possible to do.

The technical scope of the present invention is not limited to the above-described embodiment, and modifications can be made as appropriate without departing from the spirit of the present invention. For example, in the above embodiment, the configuration in which the side reflecting surfaces 34 are arranged on both sides of the light guide member 22 in the width direction with respect to the curved surface 35 has been described as an example, but the present invention is not limited to this. ..

FIG. 7 is a cross-sectional view showing a vehicle lamp 20A according to a modified example. In the vehicle lamp 20A shown in FIG. 7, the side reflecting surface 34 is arranged only on one side (for example, the second portion 39b) in the width direction of the light guide member 22A with respect to the curved surface 35A of the emitting surface 38. Will be done. In FIG. 7, the first portion 39a of the exit surface 38 is formed with a curved surface 35A over the entire surface. In this configuration, the light guided to the side reflecting surface 34 is reflected by the side reflecting surface 34 toward the first portion 39a and emitted from the first portion 39a. Further, the light guided to the first portion 39a by the light guide reflecting surface 37 is emitted forward from the first portion 39a. Therefore, the amount of light emitted forward can be secured. Therefore, the vehicle lamp 20A can emit more light to one side while ensuring the amount of light emitted forward.

Further, for example, in the above embodiment, the case where the width of the side reflecting surface 34 is constant in the longitudinal direction of the light guide member 22 has been described as an example, but the present invention is not limited to this. FIG. 8 is a side view showing a vehicle lamp 20B according to a modified example. Note that FIG. 8 shows the shape of the light guide member 22B in a linearly stretched state. Further, in FIG. 8, a part of the illustration in the longitudinal direction is omitted. The vehicle lamp 20B shown in FIG. 8 has a configuration in which the width of the side reflecting surface 34B differs in the longitudinal direction of the light guide member 22.

In FIG. 8, for example, the width d3 of the side reflecting surface 34B at the intersection 22S intersecting the horizontal plane of the light guide member 22B is larger than the width d4 of the side reflecting surface 34B at the parallel portion 22H substantially parallel to the horizontal plane. ing. As a result, in the intersecting portion 22S, more light can be emitted from the side reflecting surface 34B to the side of the light guide member 22B, that is, to the side of the vehicle. Further, in the parallel portion 22H, the light emitted from the side reflecting surface 34B to the side of the light guide member 22B, that is, to the lower side of the vehicle can be reduced as compared with the intersecting portion 22S. Further, in the parallel portion 22H, since the width of the curved surface 35B is relatively large, more light can be emitted to the front of the vehicle. As a result, waste of light can be reduced.

The example shown in FIG. 8 shows a case where the width of the lateral reflecting surface 34B gradually changes from the width d3 to the width d4, but the present invention is not limited to this. For example, the width of the side reflecting surface 34B may be changed stepwise. Further, FIG. 8 shows a case where the lateral reflecting surface 34B is reduced from the central portion in the width direction toward the side in the width direction, but the present invention is not limited to this.

Further, for example, in the above embodiment, the case where the side reflecting surface 34 extends in parallel with the longitudinal direction of the light guide member 22 has been described as an example, but the present invention is not limited to this. FIG. 9 is a side view showing an example of the vehicle lamp 20C according to the modified example. Note that FIG. 9 shows the shape of the light guide member 22 in a linearly stretched state. Further, in FIG. 9, a part of the illustration in the longitudinal direction is omitted. As shown in FIG. 9, the lateral reflecting surface 34C may extend in a direction inclined by an angle α with respect to the longitudinal direction of the light guide member 22. Further, the lateral reflecting surface 34C is not limited to a configuration extending linearly, and may have a configuration extending linearly. In this case, since the dimension of the curved surface 35C in the width direction changes relatively, the amount of light emitted to the front of the vehicle can be adjusted according to the position of the light guide member 22C in the longitudinal direction.

Further, for example, in the above embodiment, the case where the side reflecting surface 34 is flat has been described as an example, but the present invention is not limited to this. FIG. 10 is a cross-sectional view showing a vehicle lamp 120 according to a modified example. The vehicle lamp 120 shown in FIG. 10 has a shape in which the side reflecting surface 134 provided on the light guide member 122 is concavely curved. Other configurations are the same as those in the above embodiment.

In this case, the light L2 incident from the end surface 22a of the light guide member 122 is reflected by, for example, the saw-shaped reflection surface 32 and the planar reflection surface 33 of the light guide member 22. Of these, the light L2 that reaches the side reflecting surface 134a is reflected toward the second portion 39b on the opposite side of the exit surface 38 in the width direction across the central portion 38a, and is arranged on the second portion 39b. It emits light from the curved surface 35 or the side reflecting surface 134b. At this time, the light L2 that reaches the second portion 39b arrives in a state that is more toward the side of the vehicle than, for example, the light that reaches the curved surface 35 without being reflected by the side reflecting surface 134. Therefore, the light L2 that has reached the second portion 39b after being reflected by the side reflecting surface 134a is emitted to the side (inside) of the vehicle as compared with the above light.

Similarly, the light that has reached the side reflecting surface 134b (not shown) is reflected toward the first portion 39a on the opposite side of the exit surface 38 in the width direction across the central portion 38a, and the first portion 39a is reflected. It emits from the curved surface 35 or the side reflecting surface 134a arranged in. At this time, the light that reaches the first portion 39a arrives in a state that is more toward the side of the vehicle than, for example, the light that reaches the curved surface 35 without being reflected by the side reflecting surface 134. Therefore, the light that reaches the first portion 39a after being reflected by the side reflecting surface 134b is emitted to the side (outside) of the vehicle as compared with the above light.

Further, for example, in the above embodiment, the configuration in which the exit surface 38 has the curved surface 35 has been described as an example, but the present invention is not limited to this. FIG. 11 is a cross-sectional view showing a vehicle lamp 220 according to a modified example. The vehicle lamp 220 shown in FIG. 11 is provided with a flat surface 235 at the front end portion of the light guide member 222. Further, the exit surface 239 projecting forward with respect to the light-shielding member 23 has a side reflection surface 234. The side reflecting surfaces 234 are provided on both sides of the light guide member 222 in the width direction with respect to the plane 235. Other configurations are the same as those in the above embodiment.

In this case, the light L3 incident from the end surface 22a of the light guide member 222 is reflected by, for example, the saw-shaped reflection surface 32 and the planar reflection surface 33 of the light guide member 222. Of these, the light L3 that reaches the lateral reflecting surface 234a is reflected toward the second portion 239b on the opposite side of the exit surface 239 with the central portion 235a in the width direction of the plane 235 in the width direction, and is reflected to the second portion 239b. Emit from a plane 235 or a lateral reflective surface 234b arranged on the two portions 239b. At this time, the light L3 that reaches the second portion 239b arrives in a state that is more toward the side of the vehicle than, for example, the light that reaches the plane 235 without being reflected by the side reflecting surface 234. Therefore, the light L3 that has reached the second portion 239b after being reflected by the side reflecting surface 234a is emitted to the side (inside) of the vehicle as compared with the above light.

Similarly, the light that has reached the side reflecting surface 234b (not shown) is reflected toward the first portion 239a on the opposite side of the exit surface 239 in the width direction across the central portion 235a, and the first portion 239a is reflected. It emits from the plane 235 or the side reflecting surface 234a arranged in. At this time, the light that reaches the first portion 239a arrives in a state that is more toward the side of the vehicle than, for example, the light that reaches the plane 235 without being reflected by the side reflecting surface 234. Therefore, the light that reaches the first portion 239a after being reflected by the side reflecting surface 234b is emitted to the side (outside) of the vehicle as compared with the above light. As described above, the vehicle lamp 220 is provided with the flat surface 235, so that the front side of the vehicle can be uniformly irradiated with light over a wide range.

Further, for example, in the above embodiment, the case where the cross-sectional shape of the light guide reflecting surface 37 (saw-shaped reflecting surface 32, planar reflecting surface 33, curved reflecting surface 36) is an elliptical shape is taken as an example. As described above, the present invention is not limited to this, and the cross-sectional shape of the light guide reflecting surface 37 may be a shape based on another shape such as a circular shape.

H Head lamp L, L1, L2, L3 Light d1, d2 Dimensions AX Long axis 10 Lamp housing 20, 20A, 20B, 20C, 120, 220 Vehicle lighting equipment 21 Light source 21f Light emitting surface 22, 22A, 22C, 122, 222 Optical member 22H Parallel portion 22S Intersection portion 22a, 22b End surface 22c Side surface 23 Light-shielding member 32 Serrated reflection surface 32b Projection portion 33 Planar reflection surface 34, 34B, 34C, 34a, 34b, 134, 134a, 134b, 234, 234a, 234b Lateral reflective surfaces 35, 35A, 35C, 35S Curved surface 36 Curved reflective surface 37 Light guide reflective surface 38 Exit surface 38a Central part 39,239 Part 39a, 239a First part 39b, 239b Second part 235 Flat surface 235a Center Department

Claims (7)

It is rod-shaped and has an end face arranged at at least one of both ends in the longitudinal direction and a side surface connecting between the both ends, and is provided so as to extend in the longitudinal direction and mounted on a vehicle. A light guide member having a light emitting surface arranged forward in a vehicle-mounted state and a light guide reflecting surface on the side surface that reflects light incident from the end face and guides the light to the light emitting surface.
A light source that is arranged on at least one end face of the light guide member and causes the light to enter the end face.
A light-shielding member which is arranged along the longitudinal direction and is arranged at a position where the exit surface of the side surface is projected forward in the vehicle-mounted state is provided.
The exit surface is provided in a band shape extending in the longitudinal direction at the central portion in the width direction orthogonal to the longitudinal direction when viewed from the front in the vehicle mounted state, and is provided with respect to the curved surface having a convex shape in the front and the curved surface. The light, which is arranged on at least one side in the width direction and has a flat shape or a curved shape having a curvature smaller than that of the curved surface and is guided from the light guide reflecting surface, sandwiches the central portion of the emitting surface. It has a side reflecting surface that reflects toward a portion opposite in the width direction, and the light guided by the light guide reflecting surface and the light reflected by the side reflecting surface are emitted .
The light guide member is a vehicle lamp having an intersecting portion arranged so as to intersect a horizontal plane in the vehicle mounted state . The vehicle lamp according to claim 1, wherein the exit surface has the lateral reflective surface on both sides in the width direction with respect to the curved surface. The vehicle lighting fixture according to claim 2, wherein the exit surface emits the light reflected by one of the side reflecting surfaces from the other side reflecting surface. Before SL intersections, the width dimension of the lateral reflective surface arranged on the inside of the vehicle in the vehicle-mounted state, of the width direction of the lateral reflective surface arranged on the outside of the vehicle The vehicle lamp according to claim 2 or 3, which is larger than the size. The vehicle lamp according to any one of claims 1 to 4, wherein the lateral reflecting surface has a band shape and extends in the longitudinal direction of the light guide member. It is rod-shaped and has an end face arranged at at least one of both ends in the longitudinal direction and a side surface connecting between the both ends, and is provided so as to extend in the longitudinal direction and mounted on a vehicle. A light guide member having a light emitting surface arranged forward in a vehicle-mounted state and a light guide reflecting surface on the side surface that reflects light incident from the end face and guides the light to the light emitting surface.
A light source that is arranged on at least one end face of the light guide member and causes the light to enter the end face.
A light-shielding member which is arranged along the longitudinal direction and is arranged at a position where the exit surface of the side surface is projected forward in the vehicle-mounted state is provided.
The exit surface is provided in a band shape extending in the longitudinal direction at the central portion in the width direction orthogonal to the longitudinal direction when viewed from the front in the vehicle mounted state, and is provided with respect to the curved surface having a convex shape in the front and the curved surface. The light, which is arranged on at least one side in the width direction and has a concave curved shape and is guided from the light guide reflecting surface, is directed to the opposite side of the exit surface with the central portion sandwiched. The light guided by the light guide reflecting surface and the light reflected by the side reflecting surface are emitted .
The light guide member is a vehicle lamp having an intersecting portion arranged so as to intersect a horizontal plane in the vehicle mounted state . It is rod-shaped and has an end face arranged at at least one of both ends in the longitudinal direction and a side surface connecting between the both ends, and is provided so as to extend in the longitudinal direction and mounted on a vehicle. A light guide member having a light emitting surface arranged forward in a vehicle-mounted state and a light guide reflecting surface on the side surface that reflects light incident from the end face and guides the light to the light emitting surface.
A light source that is arranged on at least one end face of the light guide member and causes the light to enter the end face.
A light-shielding member which is arranged along the longitudinal direction and is arranged at a position where the exit surface of the side surface is projected forward in the vehicle-mounted state is provided.
The exit surface is a plane provided in a band shape extending in the longitudinal direction at a central portion in the width direction orthogonal to the longitudinal direction when viewed from the front in the vehicle mounted state, and at least one of the width directions with respect to the plane. The light directed from the light guide reflection surface is opposite to the width direction of the emission surface with the central portion in the width direction orthogonal to the longitudinal direction when viewed from the front in the vehicle mounted state. It has a side reflecting surface that reflects toward a side portion, and the light guided by the light guide reflecting surface and the light reflected by the side reflecting surface are emitted .
The light guide member is a vehicle lamp having an intersecting portion arranged so as to intersect a horizontal plane in the vehicle mounted state .

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