JP7247458B2 - vehicle lamp - Google Patents

Description

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

For example, Japanese Patent Laid-Open No. 2002-100000 discloses a vehicle lamp that includes a light guide member. The vehicle lamp of Patent Document 1 includes an inner panel, a reflector, an inner lens, a light guide member, and a light source. In the vehicle lamp of Patent Document 1, light from a light source is guided by a light guide member, the guided light is emitted from the light guide member toward a reflector, and the emitted light is reflected by the reflector toward the front of the vehicle. , the reflected light causes the inner lens to uniformly emit surface light. Further, in the vehicle lamp of Patent Document 1, the light guide member is arranged so as to be visible from the side of the vehicle. The light that was not there irradiates the side of the vehicle. As a result, when viewed from the front of the vehicle, the vehicular lamp of Patent Document 1 has a good appearance without a difference in brightness, and also has improved visibility from the side of the vehicle.

JP 2015-138670 A

However, when the vehicle lamp of Patent Document 1 is viewed from the side of the vehicle, only the light emitted from the light guide member to the reflector side that is not reflected by the reflector toward the front side of the vehicle can be seen. That is, the visibility from the side of the vehicle is only improved, and when viewed from the intended direction, the direction you want to show, or any direction (hereinafter referred to as "arbitrary direction") does not improve the appearance of

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle lamp that achieves light distribution and improves the appearance when viewed from any direction.

A vehicle lamp according to the present invention includes a lamp housing and a lamp lens that define a lamp chamber, and a light source, a light guide member, and a reflector member that are arranged in the lamp chamber. The reflector member has a plurality of first reflecting surfaces for reflecting the emitted light emitted from the light guide member to the lamp lens side as light distribution control light, and the emitted light to the lamp lens side as diffused light. and a plurality of second reflective surfaces for reflecting light.

Preferably, in the vehicle lamp of the present invention, the plurality of first reflecting surfaces and the plurality of second reflecting surfaces are alternately arranged.

In the vehicular lamp of the present invention, the plurality of first reflecting surfaces are concave or flat, the plurality of second reflecting surfaces are convex, and the emitted light is directed to the first reflecting surface and the second reflecting surface. It is preferable to reach the boundary of

Preferably, the vehicle lamp of the present invention includes an inner panel member arranged in the lamp chamber, and the light source and the light guide member are positioned on the back side of the inner panel member and the reflector member.

In the vehicular lamp of the present invention, it is preferable that the light guide member has an emitting portion for emitting emitted light, and the emitting portion is arranged along the reflector member.

In the vehicular lamp of the present invention, the light guide member has an emitting portion, the emitting portion has a cylindrical shape with a center line, an emitting surface for emitting emitted light, and light from the light source on the emitting surface side. a reflective surface that reflects, the reflective surface forming an arc shape centered on the center line in a cross-sectional shape perpendicular to the center line of the emitting part, and both ends of the arc of the reflective surface are the reflector member. It is preferably positioned on an extension of two lines connecting the centers from both ends of the plurality of first reflecting surfaces and second reflecting surfaces.

INDUSTRIAL APPLICABILITY The vehicle lamp of the present invention achieves light distribution and can improve the appearance when viewed from any direction.

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

Hereinafter, one example of an embodiment (example) of a vehicle lamp according to the present invention will be described in detail with reference to the drawings. In this specification, front, rear, top, bottom, left, and right are front, rear, top, bottom, left, and right when the vehicle is equipped with the vehicle lamp according to the present invention. 5 to 8, hatching of the light guide member, reflector member and inner panel member is omitted.

(Explanation of configuration of embodiment)
The configuration of the vehicle lamp according to this embodiment will be described below. In the drawing, reference numeral 1 denotes a vehicle lamp according to this embodiment.

(Description of vehicle lamp 1)
The vehicle lamp 1 is a rear combination lamp in this example. The vehicle lamp 1 is installed on both left and right sides of the rear portion of a vehicle (not shown). The vehicle lamp 1 of this example is installed on the right side of the rear portion 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 seen from above the vehicle. As shown in FIG. 2, the planar 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 sides of the vehicle and is thin. form.

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

(Description of Lamp Housing 11, Cover 12, and Lamp Lenses 21, 22)
Lamp housing 11 is made of, for example, a light-impermeable member (resin member or the like). As shown in FIGS. 1 to 3, the lamp housing 11 is mainly open from the rear side of the vehicle to the outside (the right side in this example), while it is mainly opened from the front side of the vehicle to the inside (the right side in this example). , left side) has a closed shape. A mounting hole 13 is provided in the lamp housing 11 . This mounting hole 13 is positioned outside and below the turnaround portion of the vehicle.

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

The opening edge of the lamp housing 11 and the opening edges of the lamp lenses 21 and 22 are fixed. Thus, the lamp chamber 7 is partitioned. In the lamp chamber 7, as shown in FIG. 3, a light source 3, a light guide member 4, a reflector member 5 and an inner panel member 6 are arranged. Other components (not shown) are arranged in the lamp chamber 7 .

The lamp lens consists of a first lamp lens 21 which is a red transparent portion (the grid pattern portion in FIGS. 1 and 2 and the upper portion in FIG. 3) and a colorless transparent portion (the patternless portion in FIG. 1). , the lower part in FIG. 3) and a second lamp lens 22 . The layout of the lamp lenses 21 and 22 is arbitrary. The cover 12 is fixed over the top portion of the first lamp lens 21 .

(Explanation of light source 3)
As shown in FIGS. 1 to 3, the light source 3 has a structure in which a light source section 31 and a socket section 32 are unitized. By detachably attaching the socket portion 32 to the attachment hole 13 of the lamp housing 11 , the light source portion 31 is arranged in the lamp chamber 7 . The socket portion 32 is arranged outside the lamp chamber 7 and functions as a heat sink. In this example, the light source unit 31 has one or a plurality of self-luminous semiconductor light-emitting elements (semiconductor light-emitting elements) such as LEDs, OELs, or OLEDs (organic EL). The light source 3 is arranged at a position distant from the first lamp lens 21 due to the relative mounting position between the thin vehicle lamp 1 and the vehicle body (not shown).

(Description of Light Guide Member 4)

In this example, the light guide member 4 is made of a colorless and transparent resin material such as acrylic resin, PC (polycarbonate), 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 is composed of an incident portion 41, an exit portion 42, and a plate-like portion 43. As shown in FIGS. The light guide member 4 is arranged between the first lamp lens 21 and the light source 3 which are separated from each other. Therefore, the light guide member 4 is formed with ribs 40 and curved portions 400 in terms of design and manufacturing, in addition to the entrance portion 41 , the exit portion 42 and the plate-like portion 43 .

The incident part 41 is arranged in the lower part inside the lamp chamber 7 so as to face the light source part 31 . The incident portion 41 causes the light L1 from the light source portion 31 to enter the light guide member 4 . The emission part 42 is arranged in the upper part in 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 emitting portion 42 and guides the light L1 incident from the incident portion 41 to the emitting portion 42 .

(Explanation of outgoing part 42)
The exit portion 42 is arranged along the upper edge of the reflector member 5 . The exit portion 42 has a cylindrical shape or a round bar shape with a center line C, as shown in FIGS. The output portion 42 has an output surface 44 , a reflecting surface 45 , a stepped surface 46 and a connecting surface 47 .

The output portion 42 advances the light L1 from the outside of the vehicle (the side of the light source 3) to the inside of the vehicle (the side opposite to the light source 3) due to the total reflection action between the emission surface 44 and the connecting surface 47. FIG. In addition, the output portion 42 emits the output light L2 toward the reflector member 5 from the output surface 44 . The emitted light L2 has light unevenness. This light unevenness is caused by the ribs 40 and curved portions 400 of the light guide member 4 and the distance from the light source 3 .

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

The output surface 44 and the connecting surface 47 are parallel to the centerline C. As shown in FIG. 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 paper, that is, the direction from the outside to the inside of the vehicle). there is The step surface 46 is recessed toward the center line C with respect to the direction opposite to the traveling direction of the light L1 (in FIG. 8, the direction from the left to the right of the paper, that is, the direction from the inside to the outside of the vehicle). Inclined. One reflecting surface 45 and one stepped surface 46 constitute one concave prism. The width of the reflecting surface 45 in the direction of the center line C is approximately 1 to 4 mm in this example.

A cross-sectional shape perpendicular to the center line C of the output portion 42 forms a circle with the center line C as the center. In the circular cross-sectional shape of the output portion 42, the output surface 44, the reflecting surface 45, the stepped surface 46, and the connecting surface 47 form 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 joint surface 47 are equivalent, and the radius of the arc of the exit surface 44 and the joint surface 47 is larger than the radius of the arc of the reflection surface 45 and the stepped surface 46. big.

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 stepped surface 46 is arranged so as to protrude from the center line C side in the direction opposite to the traveling direction of the light L1. It may be tilted to form a convex prism. At this time, the radii of the arcs of the output 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 Reflector Member 5)
In this example, the reflector member 5 is made of light-impermeable resin and has the function of an inner panel member. The reflector member 5 has an upper portion 5U facing the first lamp lens 21 and a lower portion 5D facing the second lamp lens 22, as shown in FIGS. Like 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 reflecting surfaces 51 and a plurality of second reflecting 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.

(Explanation of first reflecting surface 51 and second reflecting surface 52)
The first reflecting surface 51 is formed of a concave surface or a flat surface, and has a light distribution control function. The light is reflected toward the first lamp lens 21 side. The light distribution control light L3 is emitted 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 in this example.

The second reflecting surface 52 is a convex surface and has a diffusing function (ornamental function). The light is reflected to the lamp lens 21 side. The second reflecting surface 52 mainly reflects the emitted light L2 as the diffused light L4 to the opposite side to the direction in which the light L1 of the emitted portion 42 travels, that is, to the outside of the vehicle. The diffused light L4 passes through the first lamp lens 21 and irradiates a range from the rear side to the outside (right side in this example) of the vehicle as red diffused light L4 in this example. This red diffused light L4, as indicated by the dashed arrow in FIG. can be visually recognized.

The plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 are alternately arranged. Each of the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 has a rectangular shape when viewed from the front. As a result, the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 form a checkered pattern when viewed from the front, as shown in FIG.

The emitted light L2 reaches the boundary 53 between the first reflecting surface 51 and the second reflecting surface 52, as shown in FIG. 6(A). This boundary 53 is a boundary of an arrangement state in which the second reflecting surface 52 is positioned upstream of the emitted light L2 with respect to the first reflecting surface 51 (that is, on the side of the emitting surface 44 of the light guide member 4).

(Description of Relative Positional Relationship Between Reflecting Surface 45 and First Reflecting Surface 51 and Second Reflecting Surface 52)
Reflecting surface 45 and first reflecting surface 51 and 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 extend from both 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 to the center of the light guide member 4, i.e., the emitting portion. 42 are located on extension lines L5 and L6 (see broken lines in FIG. 7) of 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. The inner panel member 6 is attached to the lamp housing 11 via an attachment member (not shown) such as an attachment bracket, like the light guide member 4 and the reflector member 5 . The inner panel member 6 and the cover 12 improve the appearance by hiding the molded objects in the lamp chamber 7 from being seen when the inside of the lamp chamber 7 is viewed from the front and top surfaces of the first lamp lens 21 . be.

(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 positioned on the rear 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, as shown in FIG. It is arranged on the opposite side to the reflection direction of the light L4 (the first lamp lens 21 side).

A space S is provided between the reflector member 5 and the inner panel member 6 at a location facing the emission portion 42 of the light guide member 4 . Thereby, the emitting portion 42 is arranged along the edge of the reflector member 5 (the edge on the space S side). In addition, the output surface 44 of the output portion 42 faces the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 of the reflector member 5 with the space S therebetween.

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

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

Part of the emitted light L2 is subjected to light distribution control on the first reflecting surface 51 and reflected toward the first lamp lens 21 as light distribution control light L3 (see the 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 on the second reflecting surface 52 and reflected toward the first lamp lens 21 as diffused light L4 (see the dashed arrows in FIGS. 2 and 5). The diffused light L4 passes through the first lamp lens 21 and irradiates a range from the rear side to the outside (in this example, the right side) of the vehicle as red diffused light L4. In addition, the diffused light L4 is mainly irradiated to the outside of the vehicle. This red diffused light L4 can be visually recognized over a range from the rear side to the outside (in this example, the right side) of the vehicle, as indicated by the dashed arrow in FIG.

In this way, the diffused light L4, together with the light distribution control light L3, passes through the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 of the reflector member 5 when viewed from the rear side of the vehicle. , the entire front surface of the first lamp lens 21 appears to glow red evenly in the state of surface emission. That is, part of the diffused light L4 is irradiated to the rear side of the vehicle as the tail lamp light distribution or the tail/stop lamp light distribution, and the tail lamp light distribution or the tail/stop lamp light distribution of the light distribution control light L3. , and establishes 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 outside (the right side in this example). Through the second reflecting surface 52, the first lamp lens 21 appears to glow red in a checkered pattern from the front to the side. That is, the diffused light L4 is irradiated from the rear side to the outside of the vehicle as light distribution for the appearance of the checkered pattern, and the light distribution for the appearance of the checkered pattern appears to move as the viewpoint P moves, Improve appearance when viewed from any direction.

(Description of effects of the embodiment)
The vehicular lamp 1 according to this embodiment has the configuration and operation described above, and the effects thereof will be described below.

The vehicle lamp 1 according to this embodiment can achieve light distribution and improve the appearance when viewed from any direction. That is, the vehicular lamp 1 according to this embodiment has a reflector member 5 that reflects the emitted light L2 emitted from the emission surface 44 of the light guide member 4 as the light distribution control light L3 toward the first lamp lens 21 side. and a plurality of second reflecting surfaces 52 for reflecting emitted light L2 toward the first lamp lens 21 as diffused light L4.

As a result, the vehicular lamp 1 according to this embodiment can be seen from the rear side of the vehicle by the red light distribution control light L3 and the diffused light L4. Through the plurality of second reflecting surfaces 52, the entire front surface of the first lamp lens 21 appears to glow red evenly in a state of surface emission. Thus, in the vehicle lamp 1 according to this embodiment, the tail lamp light distribution or the tail/stop lamp light distribution is established by the light distribution control light L3 and the diffused light L4 contributing to the light distribution.

Further, the vehicle lamp 1 according to this embodiment emits red diffused light L4, and when viewed from a range from the rear side to the outside (in this example, the right side) of the vehicle, a plurality of second reflections of the reflector member 5 are reflected. Through the surface 52, the red diffused light L4 appears to move as the viewpoint P moves in the range from the front surface to the side surface of the first lamp lens 21. FIG. As described above, the vehicle lamp 1 according to this embodiment can improve the appearance when viewed from any direction by the diffused light L4.

In the vehicle lamp 1 according to this embodiment, the light L2 emitted from the light emitting surface 44 of the light guide member 4 is distributed by the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 of the reflector member 5. The light control light L3 and the diffused light L4 are reflected toward the first lamp lens 21 and emitted to the outside through the first lamp lens 21 . As a result, the vehicular lamp 1 according to this embodiment reduces the light unevenness of the emitted light L2 from the emission surface 44 of the light guide member 4 to the plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 51 of the reflector member 5 . The luminous intensity distribution control light L3 and the diffused light L4 from the reflecting surface 52 make it difficult to see and can be mitigated. As a result, the vehicle lamp 1 according to this embodiment emits light emitted from the light guide member directly to the lamp lens side without passing through the reflecting surface of the reflector member, and irradiates the light outside through the lamp lens. Compared with the lighting fixture, the surface light emission of the entire front surface of the first lamp lens 21 and the checkered pattern light emission from the front surface to the side surface can be clearly seen.

In the vehicle lamp 1 according to this embodiment, a plurality of first reflecting surfaces 51 and a plurality of second reflecting surfaces 52 are alternately arranged to form a checkered pattern when viewed from the front as shown in FIG. It is. As a result, when the vehicle lamp 1 according to this embodiment is viewed from the rear side of the vehicle to the outside (the right side in this example), the plurality of second reflecting surfaces 52 of the reflector member 5 have a checkered pattern. It appears to shine red through the first lamp lens 21 and to move as the viewpoint P moves. As a result, the vehicle lamp 1 according to this embodiment can further improve the appearance when viewed from any direction, and a novel appearance can be obtained.

In the vehicle lamp 1 according to this embodiment, since the first reflecting surface 51 forms a concave surface or a flat surface, the emitted light L2 emitted from the emitting surface 44 of the light guide member 4 can be accurately and accurately controlled as the light distribution control light L3. It is possible to control the light distribution with high efficiency and reflect the light toward the first lamp lens 21 side. Further, in the vehicle lamp 1 according to this embodiment, the second reflecting surface 52 is convex, so that the emitted light L2 can be reliably diffused as the diffused light L4 and reflected toward the first lamp lens 21 side. is.

In the vehicle lamp 1 according to this embodiment, the emitted light L2 reaches the boundary 53 between the first reflecting surface 51 and the second reflecting surface 52, as shown in FIG. 6(A). As a result, in the vehicle lamp 1 according to this embodiment, there is nothing that blocks the emitted light L2, and the emitted light L2 can reach the entire surface of the first reflecting surface 51. (see FIG. 6B) does not occur. As a result, in the vehicle lamp 1 according to this embodiment, the emitted light L2 uniformly hits the entire plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 of the reflector member 5, and is directed toward the first lamp lens 21 side. Since the light is reflected, the entire front surface of the first lamp lens 21 appears to shine red in a beautiful state of surface emission.

(Description of the first reflecting surface 51B and the second reflecting surface 52B of the general reflector member 5B)
Here, the first reflecting surface 51B and the second reflecting surface 52B of the general reflector member 5B with different light distribution control will be described with reference to FIG. 6(B).

The first reflecting surface 51B of the general reflector member 5B is a concave surface or a flat surface, has a certain kind of light distribution control function, and reflects the emitted light L2 as a kind of light distribution control light (not shown). Further, the second reflecting surface 52B of the general reflector member 5B is formed of a concave surface or a flat surface similarly to the first reflecting surface 51B, and has a light distribution control function different from that of the first reflecting surface 51B. L2 is reflected as light distribution control light (not shown) different from the light distribution control light from the first reflecting surface 51B.

However, the general reflector member 5B has a step 53B formed between the first reflecting surface 51B and the second reflecting surface 52B located upstream of the emitted light L2 from the first reflecting surface 51B. there is That is, the end of the second reflecting surface 52B (the downstream end of the emitted light L2) rises by one step from the end of the first reflecting surface 51 (the upstream end of the emitted light L2) via the step 53B. there is A portion of the emitted light L2 is blocked by the step 53B, and a shadow portion D is generated in the portion of the first reflecting surface 51 on the side of the step 53B. As a result, in the general reflector member 5B, the emitted light L2 cannot uniformly hit the entirety of the plurality of first reflecting surfaces 51B and the plurality of second reflecting surfaces 52B, and the entire front surface of the lamp lens shines uniformly. It is difficult to obtain a state of surface emission that is visible. In FIG. 6B, the dashed arrow and the symbol "L7" are a part of the emitted light L2 and the light blocked by the step 53B, that is, the light blocked.

On the other hand, in the vehicle lamp 1 according to this embodiment, as shown in FIG. It is moved by a dimension T from the boundary between the first reflecting surface 51B and the step 53B to the second reflecting surface 52 side (upstream side of the emitted light L2). A convex second reflecting surface is set from a boundary 53 between the first reflecting surface 51 and the second reflecting surface 52 . Thereby, the step 53B between the first reflecting surface 51B and the second reflecting surface 52B of the general reflector member 5B can be eliminated. As a result, as described above, the vehicle lamp 1 according to this embodiment has no obstacle (step 53B shown in FIG. 6B) that blocks the emitted light L2, as shown in FIG. Since L2 can reach the entire surface of the first reflecting surface 51, the shadow D (see FIG. 6B) does not occur on the first reflecting surface 51. FIG.

In the vehicle lamp 1 according to this embodiment, the light source 3 and the light guide member 4 are positioned on the lower portion 5D of the reflector member 5 and the back side of the inner panel member 6, as shown in FIG. As a result, when the vehicular lamp 1 according to this embodiment is viewed from the front, that is, when the inside of the lamp chamber 7 is viewed through the lamp lenses 21 and 22 from the rear side of the vehicle, the light source 3 and the light guide member 4 are the reflector members. It is covered by the lower part 5D of 5 and the inner panel member 6. As shown in FIG. As a result, the vehicle lamp 1 according to this embodiment can provide light through the first reflecting surface 51 and the second reflecting surface 52 of the reflector member 5 even if the light source 3 and the light guide member 4 cannot be seen from the rear side of the vehicle. Since the entire front surface of the first lamp lens 21 appears to glow red evenly in the state of surface 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 the interior of the lamp chamber 7 is viewed through the lamp lenses 21 and 22 from the rear side to the outside of the vehicle, the light source 3 and the guide light are visible. The optical member 4 is covered by the lower portion 5D of the reflector member 5 and the inner panel member 6. As shown in FIG. As a result, the vehicle lighting device 1 according to this embodiment can transmit the light through the large number of second reflecting surfaces 52 of the reflector member 5 even if the light source 3 and the light guide member 4 cannot be seen from the rear side to the outside of the vehicle. The checkered pattern appears to shine red from the front to the side of the 1-lamp lens 21, and the checkered pattern moves along with the movement of the viewpoint P, so that a novel appearance can be realized.

In the vehicle lamp 1 according to this embodiment, since the light source 3 and the light guide member 4 are hidden by the lower portion 5D of the reflector member 5 and the inner panel member 6, the light source 3 is a highly directional light source such as an LED or an OEL. Alternatively, the directivity of the light source 3 can be relaxed by using an OLED (organic EL) or the like. As a result, in the vehicle lamp 1 according to this embodiment, the entire front surface of the first lamp lens 21 uniformly emits red light through the first reflecting surface 51 and the second reflecting surface 52 of the reflector member 5. It can be improved to look shiny. In addition, the vehicle lamp 1 according to this embodiment is improved so that the checkered pattern from the front to the side of the first lamp lens 21 looks reddish through the multiple second reflecting surfaces 52 of the reflector member 5. be able to.

In the vehicle lamp 1 according to this embodiment, the light guide member 4 has an emission portion 42 for emitting the emitted light L2, and the emission portion 42 is arranged along the reflector member 5 . As a result, in the vehicle lamp 1 according to this embodiment, the emitted light L2 from the emitting portion 42 of the light guide member 4 can be applied to the entire reflector member 5 and reflected toward the first lamp lens 21 side. With one lamp lens 21, the appearance of uniform surface emission of the entire reflector member 5 can be obtained.

Moreover, the vehicular lamp 1 according to this embodiment is provided with the emission surface 44 for emitting the emitted light L2 in the emission portion 42, and the emission surface 44 is formed by a large number of the first reflecting surfaces 51 of the reflector member 5 and a large number of light beams L2. It faces the second reflecting surface 52 . As a result, the vehicular lamp 1 according to this embodiment directs the emitted light L2 from the emission surface 44 of the emission portion 42 to the whole of the multiple first reflecting surfaces 51 and the multiple second reflecting surfaces 52 of the reflector member 5. Since the light can be reflected to the first lamp lens 21 side by hitting the light, it is possible to reliably obtain the appearance of uniform surface emission of the entire reflector member 5 in the first lamp lens 21 .

In the vehicle lamp 1 according to this embodiment, both ends 48 and 49 of the arc of the reflecting surface 45 of the light guide member 4, i. They are located on extension lines L5 and L6 of two lines connecting both ends 54 and 55 of the surface 52 to the center C. FIG. As a result, in the vehicle lamp 1 according to this embodiment, the emitted light L2 reflected by the reflecting surface 45 of the light guide member 4 and emitted from the emitting surface 44 of the light guide member 4 is all emitted from the plurality of reflector members 5. The light is incident all over the first reflecting surface 51 and the plurality of second reflecting surfaces 52 without waste. As a result, in the vehicle lamp 1 according to this embodiment, the entire front surface of the first lamp lens 21 is uniformly distributed via the entire plurality of first reflecting surfaces 51 and the plurality of second reflecting surfaces 52 of the reflector member 5 . It is possible to efficiently emit red light in the state of surface emission.

(Description of examples other than the embodiment)
In the above-described embodiment, a tail lamp or a tail/stop lamp which has a shape that wraps around from the rear portion to the side portion of the vehicle and has a thin shape will be described. However, the present invention can also be applied to lamps other than tail lamps or tail/stop lamps. For example, it can also be applied to lamps without wraparound portions, lamps that are not thin, and the like.

In the above-described embodiment, the first reflecting surface 51 is concave or flat, and the second reflecting surface 52 is convex. However, in the present invention, the first reflecting surface 51 may be a surface other than a concave or flat surface, and the second reflecting surface 52 may be a surface other than a convex surface.

Furthermore, in the above-described embodiment, the reflector member 5 is formed by integrating the upper portion 5U and the lower portion 5D. However, in the present invention, the upper portion 5U and the lower portion 5D of the reflector member 5 may be separate pieces. In this case, the upper portion 5U and the inner panel member 6 may be integrated, or the lower portion 5D may be an inner panel member.

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

Reference Signs List 1 vehicle lamp 11 lamp housing 12 cover 13 mounting hole 21 first lamp lens (lamp lens)
22 second lamp lens (lamp lens)
3 light source 31 light source section,
32 socket portion 4 light guide member 40 rib 41 incident portion 42 output portion 43 plate-like portion 44 output surface 45 reflective surface 46 step surface 47 connecting surface 48, 49 both ends 400 curved portion 5, 5B reflector member 5U upper portion 5D lower portion 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 Emitted light L3 Light distribution control light L4 Diffused light L5, L6 Extension line L7 Blocked light (light shielding)
P point of view S space T dimension

Claims (4)

a lamp housing and a lamp lens that define a lamp chamber;
a light source, a light guide member, and a reflector member arranged in the lamp chamber;
with
The light guide member is a member that guides the light from the light source to the reflector member , and has a cylindrical or round bar-shaped emitting portion ,
the emitting portion is arranged along an edge of the reflector member and emits the light as emitted light toward the reflector member;
a plurality of first reflecting surfaces and a plurality of second reflecting surfaces are provided on a surface of the reflector member facing the lamp lens ,
The plurality of first reflecting surfaces have a light distribution control function, reflect the emitted light as light distribution control light to the lamp lens side, and irradiate the rear side of the vehicle through the lamp lens,
The plurality of second reflecting surfaces have a decorative function, reflect the emitted light as diffused light to the lamp lens side and mainly to the outside of the vehicle , and pass through the lamp lens to the rear side of the vehicle. to irradiate outward from
A vehicle lamp characterized by: The plurality of first reflective surfaces and the plurality of second reflective surfaces are alternately arranged to form a checkered pattern when viewed from the front,
the plurality of first reflecting surfaces are concave or flat,
The plurality of second reflecting surfaces are convex surfaces,
The second reflecting surface is positioned on a boundary between the first reflecting surface and the second reflecting surface, and the second reflecting surface is positioned upstream of the emitted light with respect to the first reflecting surface. There is nothing to block the emitted light from the boundary of
The vehicle lamp according to claim 1, characterized in that: An inner panel member arranged in the lamp chamber,
The light source and the light guide member are positioned on the back side of the inner panel member and the reflector member,
3. The vehicle lamp according to claim 1 , wherein: The emitting portion is
having a cylindrical shape with a center line,
an emission surface for emitting the emission light;
a reflecting surface that reflects light from the light source toward the exit surface;
has
the reflecting surface has an arc shape centered on the center line in a cross-sectional shape perpendicular to the center line of the emitting portion;
Both ends of the arc of the reflecting surface are located on extensions of two lines connecting the center from both ends of the plurality of first reflecting surfaces and the second reflecting surface of the reflector member,
The vehicle lamp according to any one of claims 1 to 3 , characterized in that:

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