JP5692517B2 - Lamp and vehicle lamp - Google Patents

Description

  The present invention relates to a lamp and a vehicular lamp configured by combining a plurality of the lamps, and more particularly to a lamp combining a LED light source and a plate-like lens body and a vehicular lamp configured by combining a plurality of the lamps.

  Conventionally, a lamp combining an LED light source and a plate-like lens body has been proposed (see, for example, Patent Document 1).

  As shown in FIG. 12 to FIG. 14, the lamp 200 described in Patent Document 1 includes a front surface 211, a back surface 212 on the opposite side, a first end surface 213 as a substantially rectangular light exit surface whose width is longer than the thickness. A plate-like lens body 210 including a second end surface 214 on the opposite side, total reflection surfaces 215a to 215e disposed on the optical path of light from the LED light source 220 introduced into the lens body 210, and the lens body 210 LED light source 220 disposed to face the surface 211 of the LED. As shown in FIG. 13A, the total reflection surfaces 215 a to 215 c pass between the optical axis AX of the LED light source 220 and the first end surface 213 among the light from the LED light source 220 introduced into the lens body 210. It arrange | positions between the optical axis AX of the LED light source 220, and the 1st end surface 213 so that the light Ray1 to advance may inject. Further, as shown in FIG. 13C, the total reflection surfaces 215 e and 215 d are formed between the optical axis AX of the LED light source 220 and the second end surface 214 among the light from the LED light source 220 introduced into the lens body 210. It arrange | positions between the optical axis AX of the LED light source 220, and the 2nd end surface 214 so that the light Ray2 which progresses may enter.

  In the lamp 200 configured as described above, light traveling between the optical axis AX of the LED light source 220 and the first end surface 213 among the light from the LED light source 220 introduced into the lens body 210, as shown in FIG. Ray1 is totally reflected by the total reflection surfaces 215a to 215c and exits from the first end surface 213 (central region A1). Of the light from the LED light source 220 introduced into the lens body 210, the light Ray2 traveling between the optical axis AX of the LED light source 220 and the second end surface 214 is totally reflected by the total reflection surfaces 215d and 215e. Then, the light is emitted from the first end surface 213 (region A2 adjacent to both sides of the central region A1). As described above, a linear light source in which the first end face 213 (the central region A1 and the region A2) emits light in a line shape is configured.

Japanese Patent No. 4458359

  However, in the lamp 200 configured as described above, as shown in FIG. 14, the total reflection surfaces 215 b and 215 c have a hole H (through the light Ray 1 incident on the total reflection surfaces 215 b and 215 c from the front surface 211 to the rear surface 212. The light ray 1 incident from the total reflection surfaces 215b and 215c is totally reflected toward the first end surface 213 (central region A1). In addition, since the light is emitted from the first end surface 213 (central region A1), a portion where the through hole H is formed must be secured in the lens body 210, and the width dimension W of the lens body 210 is correspondingly increased. There is a problem that it cannot be shortened. Further, when the width dimension W of the lens body 210 is simply shortened, there is a problem that the light flux emitted from the first end face 213 is reduced by the shortening.

  The present invention has been made in view of such circumstances, and is configured by combining a plurality of lamps and a lamp capable of realizing a luminous flux utilization efficiency equal to or higher than that of the prior art even if the width dimension of the lens body is shortened. An object of the present invention is to provide a vehicular lamp.

In order to solve the above-mentioned problem, the invention according to claim 1 is arranged in front of the LED light source so that light emitted from the LED light source and the LED light source is incident, and is incident from the LED light source. A lens portion for condensing light, a front surface including the lens portion, a back surface on the opposite side, a first end surface as a substantially rectangular light exit surface having a width dimension longer than a thickness dimension, and a second end surface on the opposite side And a plate-shaped lens body, wherein the lens body travels between the optical axis of the LED light source and the first end face among the light introduced from the lens portion into the lens body. A first total reflection surface disposed between the optical axis of the LED light source and the first end surface so that the incident light enters, and the LED light source out of the light introduced from the lens portion into the lens body Between the optical axis and the second end face The first reflection region and the other side, which are arranged between the optical axis of the LED light source and the second end surface so that light traveling through the second light source and the lamp optical axis is a boundary. And a second total reflection surface including a second reflection region disposed on the first total reflection surface, wherein the first total reflection surface is the first total reflection of light introduced from the lens portion into the lens body. The light incident on the surface is a total reflection surface for directly reflecting the light toward the central region of the first end surface and emitting the light from the central region as a light beam that is parallel or substantially parallel to the lamp optical axis, The second total reflection surface is a total reflection surface for totally reflecting light incident on the second total reflection surface out of the light introduced from the lens portion into the lens body toward the second end surface. The second end face is disposed on one side with the lamp optical axis as a boundary. The first inner end surface and the first outer end surface disposed outside the first inner end surface, the second inner end surface disposed on the other side, and the second outer disposed outside the second inner end surface. The first inner end surface is a total reflection surface for totally reflecting light incident from the first reflection region toward the first outer end surface, and the first outer end surface is Light incident from the first inner end face is directly totally reflected toward an adjacent area adjacent to one side of the central area of the first end face, and is parallel or substantially parallel to the lamp optical axis from the adjacent area. The second inner end surface is a total reflection surface for totally reflecting light incident from the second reflection region toward the second outer end surface, and The second outer end surface transmits light incident from the second inner end surface to the central region of the first end surface. The first total reflection surface is a total reflection surface for direct total reflection toward an adjacent region adjacent to the other side of the light and for emitting the light from the adjacent region as a light beam that is parallel or substantially parallel to the optical axis of the lamp. One end edge extends to the vicinity of the boundary between the first inner end face and the first outer end face in the width direction of the lens body, and the other end edge extends in the second inner side in the width direction of the lens body. The first inner end surface, the first outer end surface, the second inner end surface, and the second outer end surface are used for injection molding of the lens body, extending to the vicinity of the boundary between the end surface and the second outer end surface. The first reflective area and the second reflective area are inclined due to the draft angle of the mold, and the light totally reflected by the first inner end face and the first outer end face, and the second The light totally reflected by the inner end surface and the second outer end surface is reflected by the inner surface of the lens body. Reflection without, characterized in that it is adjusted to emit directly from the first end surface.

  According to the first aspect of the present invention, the first total reflection surface (corresponding to the total reflection surfaces 215a to 215c of the prior art) receives light incident on the first total reflection surface directly on the first end surface (center region). Since it is a structure that reflects the light toward the entire surface and emits the light from the first end face (central region), that is, a conventional through hole is unnecessary, a portion that forms the through hole is unnecessary, and the lens It becomes possible to shorten the width dimension of the body.

  According to the first aspect of the present invention, one end edge extends to the vicinity of the boundary between the first inner end face and the first outer end face in the width direction of the lens body, and the other end edge is the width of the lens body. Since the wide first total reflection surface extending to the vicinity of the boundary between the second inner end surface and the second outer end surface with respect to the direction is used, even if the width dimension of the lens body is shorter than the conventional technology, it is equal to or more than the conventional technology. Thus, it is possible to configure a lamp capable of realizing the luminous flux utilization efficiency.

  In addition, according to the first aspect of the present invention, it is possible to achieve a luminous flux utilization efficiency equal to or higher than that of the prior art and to make the width dimension of the lens body shorter than that of the prior art. It is possible to configure a compact lamp having a short width dimension and dramatically improved layout flexibility.

  According to the first aspect of the present invention, the light that is totally reflected by the first inner end face and the first outer end face (and the light that is totally reflected by the second inner end face and the second outer end face) is the lens body. Thus, it is possible to configure a lamp that emits directly from the first end face (adjacent region) without being internally reflected on the back surface of the lamp and has high luminous flux utilization efficiency.

  According to a second aspect of the present invention, in the first aspect of the present invention, the first end surface is provided with a lens cut for irradiating light emitted from the first end surface in a target direction. It is characterized by.

  According to invention of Claim 2, it is possible to comprise the lamp which can irradiate the light which leaves from a 1st end surface in the target direction (for example, vehicle side 45 degrees or 80 degrees direction). It becomes.

  According to a third aspect of the present invention, in the vehicular lamp including the plurality of lamps according to the second aspect, the first end surfaces of the plurality of the lamps are adjacent to each other along a line extending from the front portion of the vehicle to the side surface. A line-shaped light exit surface that is arranged and continues from the front to the side of the vehicle as a whole is configured, and the first end surface that is disposed closer to the front of the vehicle among the first end surfaces of the plurality of lamps A first lens cut for irradiating light emitted from one end face in a first direction is provided, and the first end face disposed near the vehicle side surface among the first end faces of the plurality of lamps A second lens cut for irradiating light emitted from one end face in the second direction is provided.

  According to the third aspect of the present invention, the first and second lens cuts cause the first direction (for example, 45 ° inward with respect to the vehicle traveling direction) and the second direction where the luminous intensity is required as the position lamp. It is possible to configure a vehicular lamp that can irradiate a direction (for example, an outward 80 ° direction with respect to the vehicle traveling direction).

  According to a fourth aspect of the present invention, in the vehicular lamp including a plurality of the lamps according to the first aspect, each of the first end surfaces of the plurality of the lamps is at least one along a line extending from the front portion of the vehicle to the side surface. A line-shaped light exit surface that is arranged adjacent to each other via the connecting portion and that is continuous from the vehicle front portion to the side surface as a whole is configured, and at least one second end surface of the second end surfaces of the plurality of lamps is: It is characterized in that at least a part of the light totally reflected by the second end face is adjusted so as to pass through the connecting portion.

  According to the invention described in claim 4, the vehicular lamp in which the connecting portion emits light by transmitting at least part of the light totally reflected by the adjusted second end face, that is, the first end face of the plurality of lamps. And it becomes possible to comprise the vehicle lamp which light-emits a line shape continuously without a connection part.

  According to the present invention, it is possible to provide a lamp capable of realizing a luminous flux utilization efficiency equal to or higher than that of the conventional one even if the width dimension of the lens body is shortened, and a vehicular lamp configured by combining a plurality thereof. It becomes possible to do.

It is a perspective view of the lamp 10 of this embodiment. 1 is a longitudinal sectional view of a lamp 10. FIG. (A) Top view of the lamp 10, (b) It is a front view. It is a figure for pointing out the problem resulting from the inclination of the 2nd end surface 14f resulting from the draft (about 3 degrees) of a metal mold | die. It is an example of the light distribution formed by the light irradiated from the lamp shown in FIG. It is an example of the light distribution formed by the light irradiated from the lamp. 1 is a perspective view of a vehicular lamp 20 configured by combining a plurality of lamps 10. FIG. It is the figure which looked at the vehicle lamp 20 from the surface 14b side. (A) view of the vehicle lamp 20 from the front, is a perspective view, (c) a perspective view of the second lens cut _{C 2} of the first lens cut _{C 1} (b). 1 is a perspective view of a vehicular lamp 30 configured by combining a plurality of lamps 10. FIG. (A) The figure which looked at the vehicle lamp 30 from the front, (b) The enlarged view of the connection part 16 vicinity. It is a perspective view of the conventional lamp 200. FIG. (A) Top view of conventional lamp 200, (B) AA sectional view of FIG. 13 (A), (C) BB sectional view of FIG. 13 (A). It is a figure for demonstrating the optical path of the light radiated | emitted from the LED light source.

  Hereinafter, a lamp according to an embodiment of the present invention will be described with reference to the drawings.

  The lamp 10 according to the present embodiment is a lamp used as a daytime running lamp or a position lamp.

  As shown in FIGS. 1, 2, 3A, and 3B, the lamp 10 includes a light source 12, a lens body 14, and the like.

  The light source 12 is, for example, a white LED light source.

  As shown in FIGS. 1 and 2, the lens body 14 is disposed in front of the LED light source 12 so that the light emitted from the LED light source 12 is incident, and collects the light incident from the LED light source 12. Lens portion 14a, a front surface 14b including the lens portion 14a, a back surface 14c on the opposite side, and a first end surface 14d as a substantially rectangular light exit surface having a width dimension (for example, 40 mm) longer than a thickness dimension (for example, 6 mm). A plate-like lens including the second end surface 14e on the opposite side, the first total reflection surface 14f, the second total reflection surface 14g, and the like disposed on the optical path of the light introduced into the lens body 14 from the lens portion 14a. Is the body.

  The lens body 14 is formed by injection molding a transparent resin material such as acrylic or polycarbonate. The second end face 14e is inclined due to the draft angle (about 3 °) of the mold used for the injection molding of the lens body 14 (see FIG. 2). The up and down arrows in FIG. 2 indicate the direction in which the mold is removed. In the present embodiment, the concave portion H (part of the surface constituting the concave portion H) formed on the back surface 14c of the lens body 14 functions as the first total reflection surface 14f and the second total reflection surface 14g.

  The lens unit 14 a is a lens unit for collecting the light incident from the LED light source 12 and introducing it into the lens body 14. The lens portion 14a is disposed in front of the LED light source 12 so that light in a narrow angle direction (for example, see Ray1 in FIG. 2) of the light emitted from the LED light source 12 is incident on the optical axis AX1. Of the light emitted from the first light incident surface 14a1 and the LED light source 12, the light is arranged in front of the LED light source 12 so that light in a wide-angle direction (for example, see Ray2 in FIG. 2) is incident on the optical axis AX1. It includes a second light incident surface 14a2 and a total reflection surface 14a3 disposed outside the second light incident surface 14a2 so that light refracted from the second light incident surface 14a2 and introduced into the lens body 14 is incident. Yes.

  The first light incident surface 14a1 collects light emitted from the LED light source 12 in a narrow-angle direction with respect to the optical axis AX1, close to the optical axis AX1 (for example, parallel or substantially parallel to the optical axis AX1). It is a lens surface for introducing light into the lens body 14 and is, for example, a lens surface convex toward the LED light source 12 side. The second light incident surface 14a2 is a lens surface for introducing, into the lens body 14, light in a wide-angle direction with respect to the optical axis AX1 among the light emitted from the LED light source 12, for example, the first light incident surface. This is a cylindrical lens surface extending from the periphery of 14a1 toward the LED light source 12 side. The total reflection surface 14a3 collects light refracted from the second light incident surface 14a2 and introduced into the lens body 14 toward the optical axis AX1 (for example, parallel or substantially parallel to the optical axis AX1). For example, a parabola that is a total reflection surface and has a focal point set at the intersection (or the vicinity thereof) of an extension line of a light ray group (not shown) that is refracted from the second light incident surface 14a2 and introduced into the lens body 14. Is a total reflection surface corresponding to a paraboloid of rotation that is rotated about the optical axis AX1.

  The light emitted from the LED light source 12 (see, for example, Ray1 and Ray2 in FIG. 2) is converted into a light beam parallel or substantially parallel to the optical axis AX1 by the action of the lens unit 14a having the above-described configuration, and the lens body 14 Introduced inside.

  As shown in FIGS. 2 and 3A, the first total reflection surface 14f is formed between the optical axis AX1 of the LED light source 12 and the first end surface 14d of the light introduced into the lens body 14 from the lens portion 14a. It arrange | positions between the optical axis AX1 of the LED light source 12, and the 1st end surface 14d so that the light Ray1 which progresses may enter.

  The first total reflection surface 14f receives the light Ray1 incident on the first total reflection surface 14f out of the light introduced from the lens portion 14a into the lens body 14, and the central region 14d1 (FIG. 3 (D) in the first end surface 14d. a) a total reflection surface for direct total reflection toward the reference) and for emitting light from the central region 14d1 as a light beam that is parallel or substantially parallel to the lamp optical axis AX2, for example, inclined toward the first end surface 14d side (For example, 45 °) is a planar total reflection surface (see FIG. 2).

  The second total reflection surface 14g is an LED light source so that light Ray2 traveling between the optical axis AX1 of the LED light source 12 and the second end surface 14e out of the light introduced into the lens body 14 from the lens portion 14a is incident. 12 optical axes AX1 and the second end face 14e.

The second total reflection surface 14g is the total for reflecting the light Ray2 incident on the second total reflection surface 14g out of the light introduced from the lens portion 14a into the lens body 14 toward the second end surface 14e. The reflection surface is, for example, a planar total reflection surface inclined toward the second end surface 14e (for example, 45 °) (see FIG. 2). Second total reflecting surface 14g is arranged to the lamp optical axis AX2 to one side of the boundary a first reflective region 14g _R and the other side arranged in (FIGS. 3 (a) Medium right) (left side in FIG. 3) The second reflection region 14g _L is included.

As shown in FIG. 3, the second end surface 14 e includes the first inner end surface 14 e 1 _R disposed on one side (right side in FIG. 3A) with the lamp optical axis AX 2 as a boundary and the first end surface 14 e 1 _R disposed on the outer side. 1 outer end surface 14e2 _R , 2nd inner end surface 14e1 _L arrange | positioned on the other side (left side in Fig.3 (a)), and 2nd outer end surface 14e2 _L arrange | positioned on the outer side are included.

First inner end surface 14e1 _R is the total reflection surface for totally reflecting the light Ray2 incident from the first reflective region 14 g _R to the first outer end face 14e2 _R, for example, the first outer end face 14e2 _R side It is an inclined (for example, 45 °) planar total reflection surface.

The first outer end face 14e2 _R is the light incident from the first inner end face 14e1 _R, the adjacent region 14d2 _R adjacent to one side of the central region 14d1 (FIGS. 3 (a) Medium right) of the first end surface 14d This is a total reflection surface for direct total reflection toward the light source and to be emitted from the adjacent region 14d2 _R as a light beam parallel (or substantially parallel) to the lamp optical axis AX2, for example, inclined toward the first inner end surface 14e2 _R side (For example, 45 °) is a planar total reflection surface.

Similarly, the second inner end surface 14e1 _L is a total reflection surface for totally reflecting the light Ray2 incident from the second reflection region 14g _L toward the second outer end surface 14e2 _L. For example, the second outer end surface 14e2 _This is a total reflection surface having a planar shape inclined to the _L side (for example, 45 °).

The second outer end surface 14e2 _L allows light incident from the second inner end surface 14e1 _L to enter the adjacent region 14d2 _L adjacent to the other side (the left side in FIG. 3A) of the central region 14d1 in the first end surface 14d. This is a total reflection surface for direct total reflection toward the light source, and is emitted from the adjacent region 14d2 _L as a light beam parallel (or substantially parallel) to the lamp optical axis AX2, for example, inclined toward the second inner end surface 14e2 _L side (For example, 45 °) is a planar total reflection surface.

As shown in FIG. 3, the first total reflection surface 14f has one end edge 14f1 near the boundary between the first inner end surface 14e1 _R and the first outer end surface 14e2 _{R in} the width direction of the lens body 14 (the triangular shape in FIG. 3). And the other edge 14f2 is near the boundary between the second inner end surface 14e1 _L and the second outer end surface 14e2 _{L in} the width direction of the lens body 14 (near the vertex B2 of the triangle in FIG. 3). The total reflection surface is wider than that of the prior art.

According to the lamp 10 having the above-described configuration, as shown in FIG. 2, light traveling between the optical axis AX1 of the LED light source 12 and the first end surface 14d among the light introduced from the lens portion 14a into the lens body 14. Ray1 is directly and totally reflected toward the central region 14d1 (see FIG. 3A) of the first end surface 14d by the action of the first total reflection surface 14f, and from the central region 14d1 to the lamp optical axis AX2. It is emitted as a parallel or substantially parallel light ray Ray1. The light Ray2 traveling between the optical axis AX1 of the LED light source 12 and the second end surface 14e out of the light introduced into the lens body 14 from the lens portion 14a is converted into the second total reflection surface 14g (first reflection region). 14g _R and the second reflection region 14g _L ), the second end face 14e (first inner end face 14e1 _R , first outer end face 14e2 _R , second inner end face 14e1 _L and second outer end face 14e2 _L ). Of the end face 14d, the light is totally reflected toward adjacent regions 14d2 _R and 14d2 _L (see FIG. 3A) adjacent to both sides of the central region 14d1, and the adjacent regions 14d2 _R and 14d2 _L to the lamp optical axis AX2. It is emitted as a parallel (or substantially parallel) ray Ray2.

As described above, the linear light source in which the first end face 14d (the central region 14d1 and the adjacent regions 14d2 _R and 14d2 _L ) emits light in a line shape is configured (see FIG. 3B).

By the way, as shown in FIG. 2, the second end face 14e (first inner end face 14e1 _R , first outer end face 14e2 _R , second inner end face 14e1 _L and second outer end face 14e2 _L ) has a draft angle ( Tilted due to about 3 °).

As shown in FIG. 4, the second total reflection surface totally reflected by the inclined first inner end surface 14e1 _R and first outer end surface 14e2 _R (and second inner end surface 14e1 _L and second outer end surface 14e2 _L ). light Ray2 from 14 g (first reflective region 14 g _R and the second reflective region 14 g _L) becomes a light upward (about 6 ° upward), partially enters the back surface 14c, it is internally reflected in the back surface 14c The first end face 14d (adjacent regions 14d2 _R and 14d2 _L ) is irradiated in the downward direction where the luminous intensity is not required as the light distribution for the daytime running lamp (the circular region surrounded by the dotted line in FIGS. 4 and 5). (Referred to), and there is a problem that the light beam utilization efficiency is lowered.

In the present embodiment, the light Ray2 totally reflected by the first inner end surface 14e1 _R and the first outer end surface 14e2 _R (and the second inner end surface 14e1 _L and the second outer end surface 14e2 _L ) is the back surface 14c of the lens body 14. The second total reflection surface 14g (the first reflection region 14g _R and the second reflection surface 14g) is emitted directly from the first end surface 14d as light parallel to (or substantially parallel to) the lamp optical axis AX2 without being internally reflected by the light source. The angle of the reflection region 14g _L ) is adjusted.

Thereby, the light Ray2 totally reflected by the first inner end surface 14e1 _R and the first outer end surface 14e2 _R (and the second inner end surface 14e1 _L and the second outer end surface 14e2 _L ) is internally reflected by the rear surface 14c of the lens body 14. Since the light is emitted directly from the first end face 14d without being reflected and irradiated in the direction in which the luminous intensity is required as the light distribution for the daytime running lamp (see FIG. 2), the light distribution for the bright daytime running lamp P (see FIG. 6) can be formed. That is, it becomes possible to configure the lamp 10 having a high luminous flux utilization efficiency.

When the angle of the second total reflection surface 14g (the first reflection region 14g _R and the second reflection region 14g _L ) is adjusted as described above, the first inner end surface 14e1 _R and the first outer end surface 14e2 _R (and the second inner A part of the light Ray2 totally reflected by the end surface 14e1 _L and the second outer end surface 14e2 _L ) may escape from the surface 14b side. In order to prevent this, in the present embodiment, the second total reflection surface 14g is disposed at a position slightly shifted to the back surface 14c side (see FIG. 2).

  As described above, according to the present embodiment, as shown in FIG. 3A, the first total reflection surface 14f (corresponding to the conventional total reflection surfaces 215a to 215c) is the first total reflection surface 14f. The light Ray1 incident on the light is directly reflected toward the first end face 14d (center area 14d1) and emitted from the first end face 14d (center area 14d1), that is, the conventional through hole is unnecessary. Since it is a structure, it becomes possible to shorten the width dimension of the lens body 14 by the part which forms the through-hole.

Further, according to the present embodiment, as shown in FIG. 3A, one end edge 14f1 is near the boundary between the first inner end face 14e1 _R and the first outer end face 14e2 _{R in} the width direction of the lens body 14 (FIG. 3). The other end edge 14f2 extends in the vicinity of the boundary between the second inner end face 14e1 _L and the second outer end face 14e2 _{L in} the width direction of the lens body 14 (the apex of the triangle in FIG. 3). Since the wide first total reflection surface 14f extending to the vicinity of B2 is used, even if the width dimension of the lens body 14 is shorter than the conventional technique (for example, the width dimension: about 60 mm) (for example, the width dimension: About 40 mm) It is possible to configure the lamp 10 capable of realizing a luminous flux utilization efficiency equal to or higher than that of the prior art.

  In addition, according to the present embodiment, the light beam utilization efficiency equal to or higher than that of the conventional technology can be achieved and the width of the lens body 14 can be made shorter than that of the conventional technology. It is possible to configure a compact lamp 10 that has a short and greatly improved freedom of layout.

  Next, an example of a vehicular lamp 20 configured by combining a plurality of lamps 10 having the above configuration will be described with reference to the drawings.

  As shown in FIGS. 7 to 9, the vehicular lamp 20 includes a plurality of lamps 10 and the like arranged adjacent to a range from the front portion of the vehicle to the side surface.

  The first end surfaces 14d of the plurality of lamps 10 are respectively arranged adjacent to each other along a line L extending from the front portion of the vehicle to the side surface and constitute a continuous light-emitting surface that continues from the front portion of the vehicle to the side surface as a whole. .

Of the first end faces 14d of the plurality of lamps 10, the first end face 14d (refer to the range indicated by the symbol A in FIG. 9A) disposed closer to the vehicle side is the light emitted from the first end face 14d. A first lens cut C ₁ (see FIG. 9B) for irradiating in one direction (for example, 45 ° direction) is applied. On the other hand, the first end face 14d (refer to the range indicated by the symbol C in FIG. 9A) disposed near the front of the vehicle among the first end faces 14d of the plurality of lamps 10 emits from the first end face 14d. light a second direction (e.g., 80 ° direction) and the second lens cut C ₂ to irradiate it has been subjected to.

According to the vehicular lamp 20 having the above-described configuration, the first and second lens cuts C ₁ and C ₂ cause the first direction (for example, the inner 45 with respect to the vehicle traveling direction) in which the luminous intensity is required as a position lamp. °) and the second direction (for example, the direction of 80 ° on the outside with respect to the vehicle traveling direction) can be configured. Further, it is possible to configure the vehicular lamp 20 capable of forming the daytime running lamp light distribution P (see FIG. 6) by the light emitted from the first end face 14d in the range indicated by the symbol B in FIG. It becomes.

  Next, an example of a vehicular lamp 30 configured by combining a plurality of lamps 10 having the above configuration will be described with reference to the drawings.

  As shown in FIGS. 10 and 11A, the vehicular lamp 30 includes a plurality of lamps 10 and the like disposed adjacent to each other via at least one connecting portion 16 in a range from the front portion of the vehicle to the side surface. ing.

  The first end surfaces 14d of the plurality of lamps 10 are respectively arranged adjacent to each other via at least one connecting portion 16 along a line L extending from the front portion of the vehicle to the side surface, and are continuous lines from the front portion of the vehicle to the side surface as a whole. A light-emitting surface is formed. The connecting portion 16 is formed by injection molding a transparent resin material such as acrylic or polycarbonate.

Among the second end surfaces 14e of the plurality of lamps 10, at least one second end surface 14e is adjusted so that at least a part of the light totally reflected by the second end surface 14e is transmitted through the connecting portion 16. FIG. 11 (b), one side of the connecting portion 16 (FIG. 11 (b) Medium left) to be disposed adjacent the first outer end face 14e2 _R and the other side of the lamp 10 (FIG. 11 (b) in it is an example of adjusting the second outer end face 14e2 _L of to placed lamp 10 adjacent to the right side).

According to the vehicle lamp 30 of the above structure, a second end surface 14e at least part of the (first outer end surface 14e2 _R and the second outer end face 14e2 _L) the total reflected light is adjusted as described above is transmitted Thus, it is possible to configure the vehicular lamp 30 in which the connecting portion 16 emits light, that is, the vehicular lamp 30 in which the first end face 14d of the plurality of lamps 10 and the connecting portion 16 emit light continuously in a line shape. Become.

  Next, a modified example will be described.

  In the above embodiment, an example in which the lamp 10 is a daytime running lamp or a position lamp has been described, but the present invention is not limited to this. For example, the lamp 10 can be used as a signal lamp or a marker lamp other than a daytime running lamp or a position lamp. Moreover, it can be used not only as a vehicular lamp but also as a general lighting fixture.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

DESCRIPTION OF SYMBOLS 10 ... Lamp, 12 ... Light source, 14 ... Lens body, 14a ... Lens part, 14a1 ... 1st light entrance surface, 14a2 ... 2nd light entrance surface, 14a3 ... Total reflection surface, 14b ... Surface, 14c ... Back surface, 14d ... the first end surface, 14d1 ... central region, 14d2 L _... adjacent region, 14d2 R _... adjacent region, 14e ... second end surface, 14e1 R _... first inner end face, 14e2 R _... first outer end face, 14e1 L _... first inner end face , 14e2 _L ... second outer end face, 14f ... first total reflection surface, 14g ... second total reflection surface, 14g _R ... first reflection area, 14g _L ... second reflection area, 16 ... connecting portion, 20 ... for vehicles Lamp, 30 ... Vehicle lamp

Claims (4)

An LED light source;
A lens unit that is disposed in front of the LED light source so that light emitted from the LED light source is incident thereon, a lens unit that collects light incident from the LED light source, a surface including the lens unit, and the opposite side A plate-like lens body including a first end face as a substantially rectangular light exit surface having a width dimension that is long with respect to the thickness dimension, and a second end face opposite to the first end face;
In the lamp with
The lens body is
The light axis of the LED light source and the first end surface so that light traveling between the optical axis of the LED light source and the first end surface of light introduced into the lens body from the lens unit is incident. A first total reflection surface disposed between,
The light axis of the LED light source and the second end surface so that light traveling between the optical axis of the LED light source and the second end surface of the light introduced from the lens portion into the lens body enters. A second total reflection surface including a first reflection region disposed on one side and a second reflection region disposed on the other side with the lamp optical axis as a boundary,
Contains
The first total reflection surface directly reflects light incident on the first total reflection surface out of the light introduced from the lens portion into the lens body toward the central region of the first end surface. , A total reflection surface for emitting light from the central region as a light beam parallel or substantially parallel to the lamp optical axis,
The second total reflection surface is a total reflection surface for totally reflecting light incident on the second total reflection surface out of the light introduced from the lens portion into the lens body toward the second end surface. And
The second end surface includes a first inner end surface disposed on one side with the lamp optical axis as a boundary, a first outer end surface disposed on the outer side of the first inner end surface, and a second inner surface disposed on the other side. 2 includes an inner end surface and a second outer end surface disposed outside the second inner end surface,
The first inner end surface is a total reflection surface for totally reflecting light incident from the first reflection region toward the first outer end surface;
The first outer end surface directly and totally reflects light incident from the first inner end surface toward an adjacent region adjacent to one side of the central region of the first end surface, and lamp light from the adjacent region. A total reflection surface for emitting as a light beam parallel or substantially parallel to the axis;
The second inner end surface is a total reflection surface for totally reflecting light incident from the second reflection region toward the second outer end surface;
The second outer end surface directly and totally reflects light incident from the second inner end surface toward an adjacent region adjacent to the other side of the central region of the first end surface, and lamp light from the adjacent region. A total reflection surface for emitting as a light beam parallel or substantially parallel to the axis;
One end edge of the first total reflection surface extends to the vicinity of the boundary between the first inner end surface and the first outer end surface in the width direction of the lens body, and the other end edge is the width of the lens body. Extending to the vicinity of the boundary between the second inner end surface and the second outer end surface with respect to the direction,
The first inner end surface, the first outer end surface, the second inner end surface and the second outer end surface are inclined due to a draft angle of a mold used for injection molding of the lens body,
The first reflection area and the second reflection area are light totally reflected by the first inner end face and the first outer end face, and light totally reflected by the second inner end face and the second outer end face. Is adjusted to emit directly from the first end face without being internally reflected by the back surface of the lens body.   The lamp according to claim 1, wherein the first end face is provided with a lens cut for irradiating light emitted from the first end face in a target direction. A vehicle lamp comprising a plurality of lamps according to claim 2,
Each of the first end surfaces of the plurality of lamps is arranged adjacent to a line extending from the front portion of the vehicle to the side surface and constitutes a linear light-emitting surface that is continuous from the front portion of the vehicle to the side surface as a whole.
The 1st lens cut for irradiating the light radiate | emitted from the said 1st end surface to a 1st direction is given to the 1st end surface arrange | positioned near the vehicle front part among the 1st end surfaces of these lamps. ,
A second lens cut for irradiating light emitted from the first end surface in the second direction is applied to the first end surface disposed near the vehicle side surface among the first end surfaces of the plurality of lamps. A vehicular lamp characterized by the above. A vehicle lamp comprising a plurality of lamps according to claim 1,
The first end surfaces of the plurality of lamps are arranged adjacent to each other via at least one connecting portion along a line extending from the front portion of the vehicle to the side surface thereof, and are continuously provided from the front portion of the vehicle to the side surface as a whole. Make up the surface,
At least one second end face among the second end faces of the plurality of lamps is adjusted so that at least a part of the light totally reflected by the second end face is transmitted through the connecting portion. Vehicle lamp.

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