JP2019153413A - Vehicular lighting fixture - Google Patents

Abstract

To efficiently emit light from a light source which has entered a light guide member to a reflection surface of a reflector member.SOLUTION: A vehicular lighting fixture includes a lamp housing 11, a lamp lens 21, a light source 3, a light guide member 4 and a reflector member 5. Both ends 48, 49 of a circular arc of a reflection surface 45 of the light guide member 4 are located on two pieces of extension lines L5, L6 connecting both ends 54, 55 of a plurality of first reflection surfaces 51 and a plurality of second reflection surfaces 52 of the reflector member 5 and a center C of the light guide member 4. As a result, this invention can efficiently emit light L1 from the light source 3 which has entered the light guide member 4 to the reflection surfaces 51, 52 of the reflector member 5.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a light guide member for a vehicle lamp.

  As a vehicular lamp provided with a light guide member, for example, there are those shown in Patent Document 1 and Patent Document 2. The vehicular lamp of Patent Document 1 includes a lamp body, a translucent cover, a light source, a light guide, and a lens member, and a plurality of reflective elements are provided on the rear surface of the light guide. . The vehicular lamp of Patent Document 1 reflects light from a light source incident on a light guide to the front part by a plurality of reflecting elements and emits the light from the front part. A predetermined light distribution pattern (for example, a light distribution pattern for a tail lamp) is irradiated to the outside through the lens member and the translucent cover.

  The vehicular lamp of Patent Document 2 includes a lamp body, a transparent cover, a light source, a light guide, an inner lens, and a reflector. The light guide is provided with an emission part and a number of reflective elements. A reflector is provided with a reflection region. In the vehicular lamp of Patent Document 2, light from a light source incident on a light guide is reflected toward an emission part by a number of reflecting elements and emitted from the emission part, and emitted light from the light guide. Is reflected toward the inner lens by the reflection region of the reflector and is irradiated to the outside as a predetermined light distribution pattern (for example, a light distribution pattern for a clearance lamp) through the inner lens and the transparent cover.

JP 2014-32747 A JP 2017-183143 A

  Here, the light emitted from the light guide has light unevenness due to the design and manufacturing structure of the light guide and the distance from the light source. However, the vehicular lamp of Patent Document 1 irradiates the emitted light with uneven light from the light guide to the outside directly through the lens member and the translucent cover. As a result, in the vehicular lamp of Patent Document 1, light unevenness occurs in the light distribution pattern irradiated from the lens member and the light transmitting cover. Further, in the vehicular lamp of Patent Document 1, since the light emission pattern irradiated from the lens member and the light-transmitting cover depends on the front portion on the emission side of the light guide, the appearance of the light distribution pattern is the front portion of the light guide The degree of freedom of appearance of the light distribution pattern is limited.

  In the vehicular lamp of Patent Document 2, the emitted light with uneven light from the light guide is once reflected by the reflection region of the reflector without directly passing through the inner lens and the transparent cover, and then the inner lens and the transparent light are reflected. The cover is passed through. For this reason, the vehicular lamp of Patent Document 2 has no light unevenness in the light distribution pattern irradiated from the inner lens and the transparent cover, and the appearance of the light distribution pattern does not depend on the light guide. The degree of freedom of appearance is secured.

  However, the vehicular lamp of Patent Document 2 is provided with an emission part and a large number of reflection elements on a light guide, and causes all of the light emitted from the emission part of the light guide to enter the reflection region of the reflector. No means are provided. As a result, the vehicular lamp of Patent Document 2 cannot efficiently emit the light from the light source incident on the light guide to the reflection region of the reflector member.

  The problem to be solved by the present invention is that there is no light unevenness in the light distribution pattern, the degree of freedom of appearance of the light distribution pattern is ensured, and the light from the light source incident on the light guide is reflected by the reflector member. An object of the present invention is to provide a vehicular lamp that can be efficiently emitted to a reflecting surface.

  A vehicular lamp according to the present invention includes a lamp housing and a lamp lens that define a lamp chamber, a light source disposed in the lamp chamber, a light guide member, and a reflector member, and the light guide member has an emission portion. The emission part has a cylindrical shape having a center line, and has an emission surface that emits light from the light source as emission light to the reflector member side, and a reflection surface that reflects light from the light source to the emission surface side, The reflector member has a reflecting surface that reflects the emitted light as reflected light to the lamp lens side, and the reflecting surface of the light guide member is centered on the center line in a cross-sectional shape perpendicular to the center line of the emitting portion. It has an arc shape, and both ends of the arc of the reflecting surface of the light guide member are located on an extension line of two lines connecting the centers from both ends of the reflecting surface of the reflector member.

  The vehicular lamp according to the present invention preferably includes an inner panel member disposed in the lamp chamber, and the light source and the light guide member are located on the back side of the inner panel member and the reflector member.

  In the vehicular lamp according to the present invention, it is preferable that the emission portion is disposed along the reflector member.

  The vehicular lamp according to the present invention has no light unevenness in the light distribution pattern, ensures freedom of appearance of the light distribution pattern, and further reflects the light from the light source incident on the light guide to the reflecting surface of the reflector member. Can be efficiently emitted.

FIG. 1 is a front view showing an embodiment of a vehicular lamp according to the present invention. FIG. 2 is a plan view (viewed in the direction of arrow II in FIG. 1) showing the vehicular lamp. FIG. 3 is a longitudinal sectional view (a sectional view taken along line III-III in FIG. 1) showing the vehicular lamp. FIG. 4 is a front view showing a part of the reflector member. FIG. 5 is an explanatory diagram (sectional view taken along the line VV in FIG. 4) showing the difference in appearance between the first reflecting surface and the second reflecting surface of the reflector member. FIG. 6 is an explanatory diagram (sectional view taken along the line VI-VI in FIG. 4) showing the relative positional relationship between the emitted light and the first reflection surface and the second reflection surface of the reflector member. FIG. 7 is a partially enlarged cross-sectional explanatory view showing a relative positional relationship between the light guide member and the reflector member. FIG. 8 is a partially enlarged cross-sectional explanatory view (cross-sectional explanatory view taken along line VIII-VIII in FIG. 7) showing the light guide action and the light emission action of the light guide member.

  Hereinafter, an example of an embodiment (example) of a vehicular lamp according to the present invention will be described in detail with reference to the drawings. In this specification, front, rear, upper, lower, left, and right are front, rear, upper, lower, left, and right when the vehicle lamp according to the present invention is mounted on a vehicle. 5 to 8, the light guide member, the reflector member, and the inner panel member are not hatched.

(Description of Configuration of Embodiment)
Hereinafter, the configuration of the vehicular lamp according to this embodiment will be described. In the figure, reference numeral 1 denotes a vehicular lamp according to this embodiment.

(Description of vehicle lamp 1)
In this example, the vehicular lamp 1 is a rear combination lamp. The vehicular lamp 1 is mounted on each of the left and right sides of the rear portion of the vehicle (not shown). The vehicle lamp 1 of this example is equipped on the right side of the rear part of the vehicle.

  The front view of FIG. 1 is a view seen from the rear side of the vehicle. The plan view of FIG. 2 is a view from the upper side of the vehicle. As shown in FIG. 2, the plane shape of the vehicular lamp 1 as a rear combination lamp is limited by the trunk room at the rear of the vehicle, and has a shape that wraps around from the rear to the side of the vehicle. Make.

  The vehicular lamp 1 includes a lamp housing 11 and a cover 12, lamp lenses (for example, a transparent outer cover and an outer lens) 21, 22, a light source 3, and a light guide member (light guide, light guide, inner lens). ) 4, a reflector member (inner housing) 5, and an inner panel member (inner housing) 6.

(Description of the lamp housing 11, the cover 12, and the lamp lenses 21 and 22)
The lamp housing 11 is composed of, for example, a light-impermeable member (such as a resin member). As shown in FIGS. 1 to 3, the lamp housing 11 is mainly open from the rear side to the outside (in this example, the right side) of the vehicle, and on the other hand, mainly from the front side of the vehicle to the inside (in this example). , Left side) is closed. A mounting hole 13 is provided in the lamp housing 11. The mounting hole 13 is located outside and below the wraparound portion of the vehicle.

  The lamp lenses 21 and 22 are made of, for example, a light transmissive member (resin member or the like). As shown in FIGS. 1 to 3, the lamp lenses 21 and 22 mainly have a shape in which a portion from the front side to the inside of the vehicle is opened and a portion from the rear side to the outside of the vehicle is mainly blocked. . The design surfaces of the closed portions of the lamp lenses 21 and 22 are along the design surface from the rear part to the side part of the vehicle.

  The opening edge of the lamp housing 11 and the opening edges of the lamp lenses 21 and 22 are fixed. Thereby, the lamp chamber 7 is partitioned. As shown in FIG. 3, the light source 3, the light guide member 4, the reflector member 5, and the inner panel member 6 are disposed in the lamp chamber 7. In the lamp chamber 7, other parts not shown are arranged.

  The lamp lens includes a first lamp lens 21 in a red transparent portion (a lattice pattern portion in FIGS. 1 and 2 and an upper portion in FIG. 3) and a colorless transparent portion (a non-pattern portion in FIG. 1). , A lower lamp portion in FIG. 3). The layout of the lamp lenses 21 and 22 is arbitrary. The cover 12 is fixed on the top portion of the first lamp lens 21.

(Description of light source 3)
As shown in FIGS. 1 to 3, the light source 3 has a structure in which a light source unit 31 and a socket unit 32 are unitized. The light source 31 is disposed in the lamp chamber 7 by removably attaching the socket 32 to the attachment hole 13 of the lamp housing 11. The socket part 32 is disposed outside the lamp chamber 7 and functions as a heat sink. In this example, the light source unit 31 includes one or a plurality of self-emitting semiconductor type light emitting elements (semiconductor light emitting elements) such as LEDs, OELs, or OLEDs (organic ELs). The light source 3 is disposed at a position away from the first lamp lens 21 due to the relative relationship between the mounting positions of the thin vehicle lamp 1 and the vehicle body (not shown).

(Description of the light guide member 4)

  In this example, the light guide member 4 is made of a colorless transparent resin material such as acrylic resin, PC (polycarbonate), or PMMA (polymethyl methacrylate, methacrylic resin). The light guide member 4 is attached to the lamp housing 11 via an attachment member (not shown) such as an attachment bracket.

  As shown in FIGS. 1 to 3, the light guide member 4 includes an incident part 41, an emission part 42, and a plate-like part 43. The light guide member 4 is disposed between the first lamp lens 21 and the light source 3 that are separated from each other. For this reason, the light guide member 4 is provided with a rib 40, a curved portion 400, and the like in terms of design and manufacture in addition to the incident portion 41, the emission portion 42, and the plate-like portion 43.

  The incident part 41 is arranged in the lower part of the lamp chamber 7 so as to face the light source part 31. The incident portion 41 causes the light L <b> 1 from the light source unit 31 to enter the light guide member 4. The emission part 42 is disposed in the upper part of the lamp chamber 7 and emits the light L1 in the light guide member 4 to the outside as the emission light L2. The plate-like portion 43 is provided between the incident portion 41 and the emission portion 42 and guides the light L1 incident from the incidence portion 41 to the emission portion 42.

(Description of the emitting portion 42)
The emission part 42 is disposed along the upper edge of the reflector member 5. As shown in FIGS. 7 and 8, the emission portion 42 has a cylindrical shape or a round bar shape having a center line C. The emission part 42 has an emission surface 44, a reflection surface 45, a step surface 46, and a connecting surface 47.

  The emission part 42 advances the light L <b> 1 from the outside of the vehicle (light source 3 side) to the inside of the vehicle (opposite side of the light source 3) by the total reflection effect on the emission surface 44 and the connecting surface 47. Further, the emission part 42 emits the emitted light L <b> 2 from the emission surface 44 toward the reflector member 5. The emitted light L2 has light unevenness. This unevenness of light is caused by the distance from the light source 3 and the rib 40 of the light guide member 4 and the curved portion 400.

  The emission surface 44 is provided on one side surface of the emission portion 42 so as to face the reflector member 5. The reflection surface 45, the step surface 46 and the connecting surface 47 are provided on the other side surface of the emission portion 42. Thereby, the output surface 44 and the reflecting surface 45, the step surface 46, and the connecting surface 47 face each other with the center line C interposed therebetween. A large number of reflective surfaces 45, step surfaces 46, and connecting surfaces 47 are provided alternately in the center line C direction.

  The emission surface 44 and the connecting surface 47 are parallel to the center line C. The reflecting surface 45 is inclined so as to be recessed toward the center line C with respect to the direction in which the light L1 travels (in FIG. 8, the direction from the right side to the left side of the page, that is, the direction from the outside to the inside of the vehicle). Yes. The step surface 46 is recessed toward the center line C with respect to the direction opposite to the direction in which the light L1 travels (in FIG. 8, the direction from the left side to the right side of the page, that is, the direction from the inside to the outside of the vehicle). Inclined. One reflecting surface 45 and one step surface 46 constitute one concave prism. In this example, the width of the reflecting surface 45 in the direction of the center line C is about 1 to 4 mm.

  The cross-sectional shape perpendicular to the center line C of the emission part 42 is a circle centered on the center line C. In the circular cross-sectional shape of the emission part 42, the emission surface 44, the reflection surface 45, the step surface 46, and the connecting surface 47 have an arc shape with the center line C as the center. At this time, the radius of the arc of the exit surface 44 and the radius of the arc of the connecting surface 47 are equal, and the radius of the arc of the exit surface 44 and the connecting surface 47 is larger than the radius of the arc of the reflecting surface 45 and the step surface 46. large.

  The reflecting surface 45 is inclined so as to protrude from the center line C side with respect to the traveling direction of the light L1, and the step surface 46 is protruded from the center line C side with respect to the direction opposite to the traveling direction of the light L1. It may be inclined to constitute a convex prism. At this time, the radii of the arcs of the emission surface 44 and the connecting surface 47 are smaller than the radii of the arcs of the reflection surface 45 and the step surface 46.

(Description of the reflector member 5)
In this example, the reflector member 5 is made of a light-impermeable resin and functions as an inner panel member. As shown in FIGS. 3 to 7, the reflector member 5 has an upper portion 5 </ b> U that faces the first lamp lens 21 and a lower portion 5 </ b> D that faces the second lamp lens 22. Similar to the light guide member 4, the reflector member 5 is attached to the lamp housing 11 via an attachment member (not shown) such as an attachment bracket. A plurality of first reflection surfaces 51 and a plurality of second reflection surfaces 52 are provided on the surface of the upper portion 5U facing the first lamp lens 21 by, for example, metal (aluminum) vapor deposition.

(Description of the first reflecting surface 51 and the second reflecting surface 52)
The first reflection surface 51 is a concave surface or a flat surface, has a light distribution control function, and has a light distribution control light L3 (a solid line arrow in FIGS. 2 and 5) that uses the emitted light L2 emitted from the emission surface 44 as reflected light. And the first lamp lens 21 side. The light distribution control light L3 passes through the first lamp lens 21 to the rear side of the vehicle, and in this example, the red tail lamp light distribution (tail lamp light distribution pattern) or the tail / stop lamp light distribution (tail / stop lamp distribution). (Light pattern).

  The second reflecting surface 52 is a convex surface, has a diffusing function (decorative function), and diffused light L4 using the emitted light L2 emitted from the emitting surface 44 as reflected light (see broken line arrows in FIGS. 2 and 5). ) To the first lamp lens 21 side. In addition, the 2nd reflective surface 52 makes the emitted light L2 diffused light L4, and mainly reflects it on the opposite side with respect to the direction which advances the light L1 of the output part 42, ie, the outer side of a vehicle. The diffused light L4 is irradiated through the first lamp lens 21 to the range from the rear side of the vehicle to the outside (right side in this example) as red diffused light L4 in this example. This red diffused light L4 is, as shown by the broken line arrow in FIG. 5, even if the viewpoint (viewing position) P changes from left to right in the range from the rear side of the vehicle to the outside (right side in this example) It can be visually recognized.

  The plurality of first reflection surfaces 51 and the plurality of second reflection surfaces 52 are alternately arranged. The plurality of first reflection surfaces 51 and the plurality of second reflection surfaces 52 each have a rectangular shape in front view. As a result, the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 form a checkered pattern as shown in FIG.

  As shown in FIG. 6A, the plurality of second reflecting surfaces 52 are formed of an optical path of outgoing light L2 that reaches the boundary 53 between the first reflecting surface 51 and the second reflecting surface 52 (in FIG. 6A). It is located on the opposite side of the protruding direction of the convex surface than the solid line arrow). The boundary 53 is a boundary in the arrangement state where the second reflecting surface 52 is located on the upstream side of the emitted light L2 with respect to the first reflecting surface 51 (that is, on the emitting surface 44 side of the light guide member 4).

(Description of the relative positional relationship between the reflective surface 45 and the first reflective surface 51 and the second reflective surface 52)
The reflecting surface 45, the first reflecting surface 51, and the second reflecting surface 52 have the following relative positional relationship in the cross-sectional view shown in FIG. That is, both ends 48 and 49 of the arc of the reflecting surface 45 are the center of the light guide member 4 from the ends 54 and 55 of the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 of the reflector member 5, that is, the outgoing portions. It is located on the extended lines L5 and L6 (see the broken line in FIG. 7) of the two lines connecting the center line C of 42.

(Description of inner panel member 6)
In this example, the inner panel member 6 is made of a light-impermeable resin and faces the first lamp lens 21 as shown in FIG. Similar to the light guide member 4 and the reflector member 5, the inner panel member 6 is attached to the lamp housing 11 via an attachment member (not shown) such as an attachment bracket. When the inner panel member 6 and the cover 12 are viewed from the front and upper surface of the first lamp lens 21 in the lamp chamber 7, the inner panel member 6 and the cover 12 are concealed so that the molded object in the lamp chamber 7 cannot be seen, thereby improving the appearance. is there.

(Description of relative positional relationship between light source 3 and light guide member 4, reflector member 5 and inner panel member 6)
The light source 3 and the light guide member 4 are located on the back side of the reflector member 5 and the inner panel member 6, as shown in FIG. That is, the light source 3 and the light guide member 4 are diffused from the light distribution control light L3 from the first reflection surface 51 and the second reflection surface 52, as compared to the reflector member 5 and the inner panel member 6, as shown in FIG. It arrange | positions on the opposite side with respect to the reflection direction (the 1st lamp lens 21 side) of the light L4.

  A space S is provided at a location between the reflector member 5 and the inner panel member 6 and facing the emission portion 42 of the light guide member 4. Thereby, the emission part 42 is arrange | positioned along the edge part (edge part by the side of space S) of the reflector member 5. FIG. Further, the emission surface 44 of the emission part 42 faces the plurality of first reflection surfaces 51 and the plurality of second reflection surfaces 52 of the reflector member 5 through the space S.

(Description of the operation of the embodiment)
The vehicular lamp 1 according to this embodiment is configured as described above, and the operation thereof will be described below.

  The light source 3 is turned on. Then, the light L 1 emitted from the light source 3 enters the light guide member 4 from the incident portion 41 of the light guide member 4. The incident light L1 is guided from the incident portion 41 to the emission portion 42 side through the plate-shaped portion 43. The guided light L <b> 1 repeats total reflection at the emission surface 44 and the connecting surface 47 of the emission portion 42 and travels through the emission portion 42. A part of the light L1 is reflected by the reflecting surface 45 toward the emitting surface 44, and the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces of the reflector member 5 are emitted from the emitting surface 44 as the emitted light L2. The light is emitted to the 52 side.

  A part of the emitted light L2 is subjected to light distribution control on the first reflecting surface 51 and reflected to the first lamp lens 21 side as light distribution control light L3 (see solid line arrows in FIGS. 2 and 5). The light distribution control light L3 is irradiated to the rear side of the vehicle through the first lamp lens 21 as a red tail lamp light distribution or a tail / stop lamp light distribution. This light distribution control light L3 can be visually recognized when viewed from the rear side of the vehicle, as indicated by the solid line arrow in FIG.

  The remainder of the emitted light L2 is diffused at the second reflecting surface 52 and reflected to the first lamp lens 21 side as diffused light L4 (see the broken line arrows in FIGS. 2 and 5). The diffused light L4 is irradiated as red diffused light L4 through the first lamp lens 21 to the range from the rear side of the vehicle to the outside (right side in this example). The diffused light L4 is mainly emitted to the outside of the vehicle. This red diffused light L4 can be viewed over a range from the rear side of the vehicle to the outside (right side in this example), as indicated by the dashed arrow in FIG.

  As described above, the diffused light L4 passes through the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 of the reflector member 5 together with the light distribution control light L3 when viewed from the rear side of the vehicle. The entire front surface of the first lamp lens 21 appears to shine red in a uniform surface emitting state. That is, a part of the diffused light L4 is irradiated to the rear side of the vehicle as tail lamp light distribution or tail / stop lamp light distribution, and tail light distribution or tail / stop lamp light distribution of the light distribution control light L3. To achieve the light distribution together with the light distribution control light L3.

  On the other hand, the diffused light L4 is diffused in a range from the rear side of the vehicle to the outer side (right side in this example), so that when viewed from any position other than the rear side of the vehicle, Through the two reflecting surfaces 52, the first lamp lens 21 appears to shine red in a checkered pattern from the front to the side. In other words, the diffused light L4 is emitted from the rear side to the outside of the vehicle as a checkered appearance light distribution (checkered appearance light distribution pattern), and the checkered appearance light distribution is a viewpoint. It appears to move as P moves, and improves the appearance when viewed from any direction.

(Explanation of effect of embodiment)
The vehicular lamp 1 according to this embodiment is configured and operated as described above, and the effects thereof will be described below.

  In the vehicular lamp 1 according to this embodiment, the output light L2 having unevenness of light from the output surface 44 of the light guide member 4 is not directly passed through the first lamp lens 21, but a plurality of the reflector members 5 are once used. The light is reflected by the first reflecting surface 51 and the plurality of second reflecting surfaces 52 and then passed through the first lamp lens 21. As a result, the vehicular lamp 1 according to this embodiment is provided with a light distribution pattern (tail lamp light distribution or tail / stop lamp light distribution and a checkered pattern light distribution emitted from the first lamp lens 21. ) There is no light unevenness.

  That is, in the vehicular lamp 1 according to this embodiment, the emitted light L2 from the emission surface 44 of the light guide member 4 is transmitted by the plurality of first reflection surfaces 51 and the plurality of second reflection surfaces 52 of the reflector member 5. The light distribution control light L3 and the diffused light L4 are reflected to the first lamp lens 21 side and irradiated to the outside through the first lamp lens 21. As a result, in the vehicular lamp 1 according to this embodiment, the light unevenness of the emitted light L2 from the emission surface 44 of the light guide member 4 is caused by the plurality of first reflection surfaces 51 and the plurality of second reflection light of the reflector member 5. The light distribution control light L3 and the diffused light L4 from the reflecting surface 52 can be easily and easily mitigated. As a result, the vehicle lamp 1 according to this embodiment allows the emitted light from the light guide member to be emitted directly to the lamp lens side without passing through the reflecting surface of the reflector member, and to be irradiated outside through the lamp lens. Compared to the lamp, the surface light emission of the entire front surface of the first lamp lens 21 and the checkered light emission from the front surface to the side surface look beautiful.

  Further, in the vehicle lamp 1 according to this embodiment, the emitted light L2 from the emission surface 44 of the light guide member 4 is incident on the plurality of first reflection surfaces 51 and the plurality of second reflection surfaces 52 of the reflector member 5. A light distribution pattern is formed after reflection. As a result, since the appearance of the light distribution pattern does not depend on the light guide member 4, the vehicle lamp 1 according to this embodiment can ensure the degree of freedom of the appearance of the light distribution pattern.

  Furthermore, in the vehicular lamp 1 according to this embodiment, both ends 48 and 49 of the arc of the reflection surface 45 of the light guide member 4 are the plurality of first reflection surfaces 51 and the plurality of second reflection surfaces 52 of the reflector member 5. Are located on extension lines L5 and L6 of two lines connecting the center C of the light guide member 4 from both ends 54 and 55. As a result, in the vehicular lamp 1 according to this embodiment, all of the emitted light L2 reflected from the reflecting surface 45 of the light guide member 4 and emitted from the exit surface 44 of the light guide member 4 is a plurality of reflector members 5. The light enters all over the first reflecting surface 51 and the plurality of second reflecting surfaces 52 without waste. As described above, in the vehicle lamp 1 according to this embodiment, the light L1 from the light source 3 incident on the light guide member 4 is reflected by the plurality of first reflection surfaces 51 and the plurality of second reflection surfaces of the reflector member 5. 52 can be efficiently emitted. Thereby, in the vehicular lamp 1 according to this embodiment, the entire front surface of the first lamp lens 21 is uniform through the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 of the reflector member 5. It can be made to emit red light efficiently in the state of surface emission.

In the vehicular lamp 1 according to this embodiment, the light source 3 and the light guide member 4 are located on the lower portion 5D of the reflector member 5 and the back surface side of the inner panel member 6, as shown in FIG.
As a result, when the vehicle lamp 1 according to this embodiment is viewed from the front, that is, when the interior of the lamp chamber 7 is viewed from the rear side of the vehicle through the lamp lenses 21 and 22, the light source 3 and the light guide member 4 are the reflector members. 5 is covered with the lower portion 5D and the inner panel member 6. Thereby, the vehicular lamp 1 according to this embodiment is configured so that the light source 3 and the light guide member 4 cannot be seen from the rear side of the vehicle via the first reflection surface 51 and the second reflection surface 52 of the reflector member 5. Since the entire front surface of the first lamp lens 21 appears to shine red in a state of surface light emission, a novel appearance can be realized.

  Similarly, when the vehicle lamp 1 according to this embodiment is viewed from the front to the side, that is, when viewed from the rear side to the outside of the vehicle through the lamp lenses 21 and 22, the light source 3 and the light guide 3 are guided. The optical member 4 is covered with the lower portion 5D of the reflector member 5 and the inner panel member 6. As a result, the vehicular lamp 1 according to this embodiment is configured so that the light source 3 and the light guide member 4 are not visible from the rear side to the outside of the vehicle via the multiple second reflecting surfaces 52 of the reflector member 5. Since the checkered pattern appears to shine red from the front to the side of the one-lens lens 21 and the checkered pattern moves as the viewpoint P moves, a novel appearance can be realized.

  In the vehicular lamp 1 according to this embodiment, since the light source 3 and the light guide member 4 are covered with the lower portion 5D of the reflector member 5 and the inner panel member 6, the light source 3 having a high directivity, that is, LED, OEL Or even if OLED (organic EL) etc. are used, the directivity of the light source 3 can be relieved. As a result, the vehicular lamp 1 according to this embodiment is red in a state where the entire front surface of the first lamp lens 21 is uniformly surface-emitting through the first reflecting surface 51 and the second reflecting surface 52 of the reflector member 5. It can be improved to look shining. In addition, the vehicular lamp 1 according to this embodiment is improved so that the checkered pattern appears to shine red from the front to the side of the first lamp lens 21 via the multiple second reflecting surfaces 52 of the reflector member 5. be able to.

  In the vehicular lamp 1 according to this embodiment, the light guide member 4 has an emission portion 42 that emits the emitted light L <b> 2, and the emission portion 42 is disposed along the reflector member 5. As a result, the vehicular lamp 1 according to this embodiment can radiate the emitted light L2 from the emission portion 42 of the light guide member 4 to the entire reflector member 5 and reflect it to the first lamp lens 21 side. In the single lamp lens 21, it is possible to obtain a uniform surface emission appearance of the entire reflector member 5.

  In addition, the vehicular lamp 1 according to this embodiment is provided with an emission surface 44 for emitting the emitted light L2 at the emission portion 42, and the emission surface 44 is provided with a large number of first reflection surfaces 51 and a large number of the reflection members 5. The second reflecting surface 52 is opposed to the second reflecting surface 52. As a result, in the vehicular lamp 1 according to this embodiment, the emitted light L2 from the emission surface 44 of the emission portion 42 is distributed to the multiple first reflection surfaces 51 and the multiple second reflection surfaces 52 of the reflector member 5 as a whole. Since it can be reflected and reflected to the first lamp lens 21 side, in the first lamp lens 21, the appearance of uniform surface emission of the entire reflector member 5 can be surely obtained.

(Description of example other than embodiment)
In the above-described embodiment, a tail lamp or tail stop lamp having a thin shape that is formed from the rear part to the side part of the vehicle will be described. However, the present invention can be applied to lamps other than the tail lamp or the tail stop lamp. For example, the present invention can be applied to a lamp without a wraparound portion or a non-thin lamp.

  Moreover, in the said embodiment, the 1st reflective surface 51 consists of a concave surface or a plane, and the 2nd reflective surface 52 consists of a convex surface. However, in this invention, the 1st reflective surface 51 may consist of surfaces other than a concave surface or a plane, and the 2nd reflective surface 52 may consist of surfaces other than a convex surface.

  Furthermore, in the said embodiment, the reflector member 5 consists of the upper part 5U and the lower part 5D by integrating. However, in the present invention, the upper portion 5U and the lower portion 5D of the reflector member 5 may be formed separately. In this case, the upper part 5U and the inner panel member 6 may be integrated, and the lower part 5D may be an inner panel member.

  Furthermore, in the above-described embodiment, the reflector member 5 is provided with a plurality of first reflecting surfaces 51 and a plurality of second reflecting surfaces 52 each having different light distribution control. However, in the present invention, the reflector member 5 may be provided with one light distribution control reflecting surface.

  In addition, this invention is not limited by the said embodiment.

DESCRIPTION OF SYMBOLS 1 Vehicle lamp 11 Lamp housing 12 Cover 13 Mounting hole 21 1st lamp lens (lamp lens)
22 Second lamp lens (lamp lens)
3 light source 31 light source part,
32 socket part 4 light guide member 40 rib 41 incident part 42 outgoing part 43 plate-like part 44 outgoing surface 45 reflective surface 46 stepped surface 47 connecting surface 48, 49 both ends 400 curved part 5, 5B reflector member 5U upper part 5D lower part 51, 51B First reflecting surface 52, 52B Second reflecting surface 53 Boundary 53B Step 54, 55 Both ends 6 Inner panel member 7 Lamp chamber C Center line (center)
D Shadow portion L1 light L2 outgoing light L3 light distribution control light (reflected light)
L4 Diffuse light (reflected light)
L5, L6 Extension line L7 Light blocked (light blocking)
P Viewpoint S Space T Dimension

Claims (3)

A lamp housing and a lamp lens that partition the lamp chamber;
A light source, a light guide member and a reflector member arranged in the lamp chamber;
With
The light guide member has an exit portion;
The exit portion is
It has a cylindrical shape with a center line,
An exit surface that emits light from the light source to the reflector member as emitted light; and
A reflecting surface that reflects light from the light source toward the emitting surface;
Have
The reflector member has a reflection surface that reflects the emitted light to the lamp lens side as reflected light,
The reflecting surface of the light guide member has a circular arc shape centering on the center line in a cross-sectional shape perpendicular to the center line of the emission part,
Both ends of the arc of the reflecting surface of the light guide member are located on an extension line of two lines connecting the center from both ends of the reflecting surface of the reflector member.
A vehicular lamp characterized by the above. An inner panel member disposed in the lamp chamber;
The light source and the light guide member are located on the back side of the inner panel member and the reflector member,
The vehicular lamp according to claim 1. The exit portion is disposed along the reflector member;
The vehicular lamp according to claim 1 or 2.

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