JP2008166194A - Vehicular lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a reflector which looks like floating to come to be shining, and a vehicular lighting fixture to have a fresh appearance, visibility from a third party improved, and safety improved in any lamp. <P>SOLUTION: This is the vehicular lighting fixture 1 in which at least two lamps 5A, 5B are installed in parallel, and the respective lamps 5A, 5b are equipped with a transparent cylindrical body 11, a dome shaped reflector 13 fixed in the cylindrical body 11, a first light source 15, and a light guide body 17 which introduces light from the first light source 15 and emits it to the reflector 13 from near the focus of the reflector 13. At one lamp 5B, a second light source 19 opposing to the base end of the cylindrical body 11 is arranged, and reflecting faces 41, 43 which reflect the light of the second light source 19 toward between the both lamps 5A, 5B (toward the other lamp 5A side) are installed at the tip part of the cylindrical body 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a vehicular lamp mounted on a vehicle.

  An example of a vehicular lamp is disclosed in Patent Document 1. The vehicular lamp includes a light source, a light guide rod that guides light emitted from the light source, and a reflector having a reflective surface that reflects light emitted from the light guide rod forward. Yes. The incident surface of the light guide bar faces the light source, and the output surface of the light guide bar faces the reflection surface of the reflector and is located at the focal point of the reflection surface of the reflector.

Light irradiated from the light source through the light guide toward the reflecting surface of the reflector is reflected by the reflecting surface of the reflector in a predetermined irradiation direction.
Japanese Patent Laid-Open No. 2002-50210

  An object of the present invention is to provide a vehicular lamp with improved visibility in this type of vehicular lamp.

  The invention according to claim 1 is a vehicular lamp in which at least two lamps are provided in parallel, and each lamp includes a transparent tubular body, a dome-shaped reflector fixed in the tubular body, and A first light source and a light guide that introduces light from the first light source and emits the light from the vicinity of the focal point of the reflector to the reflector, and one of the lamps includes the cylindrical body. A second light source facing the base end of the cylindrical body is disposed, and the light of the second light source introduced from the base end of the cylindrical portion is reflected between the two lamps at the distal end portion of the cylindrical body. The reflective surface to be made is provided.

  The invention according to claim 2 is a vehicular lamp in which at least two lamps are provided in parallel, each lamp having a transparent tubular body, a dome-shaped reflector fixed in the tubular body, and A first light source and a light guide that introduces the light of the first light source and emits the light from the vicinity of the focal point of the reflector to the reflector, and a base of the cylindrical body on the outer peripheral side of the cylindrical body. An axially extending portion extending in the axial direction from the end side toward the distal end, and a radially extending portion extending in the radial direction from the distal end portion of the axially extending portion toward the inner peripheral side of the cylindrical body, A light guide that is configured in a substantially L shape, and a second light source is disposed on one of the lamps so as to face a base end of the cylindrical body, and A second portion introduced into the cylindrical body at least in a portion where the light guide body is overlapped in the distal end portion of the cylindrical body. Wherein the reflective surface for reflecting the light from the light source between the two lamp.

  Invention of Claim 3 is a vehicle lamp of Claim 2, Comprising: Except the part with which the said light guide body is piled up among said one lamp | ramp at the said one lamp | ramp. A diffusing prism portion for diffusing and irradiating light from the second light source introduced from the base end of the cylindrical body is provided.

  Invention of Claim 4 is a vehicle lamp of Claim 2 or 3, Comprising: The exit surface which radiate | emits the light from the reflective surface of the said cylindrical body in the vicinity of the reflective surface of the said cylindrical body And a light transmission surface provided in parallel to the emission surface of the cylindrical body is formed on the light guide.

  Invention of Claim 5 is a vehicle lamp of any one of Claims 1-4, Comprising: The cylindrical body of the other lamp | ramp is a front end side with respect to the cylindrical body of said one lamp | ramp. It is characterized by jumping out.

  A sixth aspect of the present invention is the vehicular lamp according to any one of the first to fifth aspects, wherein the tubular body extends to the inside and outside of the tubular body on the back side of the reflector. An inner panel for hiding the base end side is provided.

  Invention of Claim 7 is a vehicle lamp of any one of Claims 1-5, Comprising: A reflective surface is formed in the back surface of the said reflector, The said cylindrical shape is formed in the back surface side of the said reflector. An inner panel that extends in and out of the body and hides the proximal end side of the cylindrical body is provided, and a reflective surface is formed on the surface of the inner panel.

  The invention according to claim 8 is the vehicular lamp according to any one of claims 1 to 7, wherein the reflector and the cylindrical body are integrally formed of a transparent member, and the surface of the reflector and / or The reflective surface is formed in the said reflector by providing a reflective layer in a back surface, It is characterized by the above-mentioned.

  According to the invention of claim 1, in any lamp, the reflector that appears to float is shining, the vehicular lamp becomes a novel appearance, the visibility from a third party is improved, and the safety is improved. improves. In addition, the design is improved. In such a structure, it is possible to prevent the two lamps from becoming dark by illuminating the space between the two lamps provided in parallel, and to increase the light emitting area of the entire vehicle lamp. Thereby, the visibility of the vehicular lamp is further improved, and the safety is further improved.

  According to the invention of claim 2, in any lamp, the reflector that seems to float is shining, the vehicular lamp becomes a novel appearance, the visibility from a third party is improved, and the safety is improved. improves. In addition, the design is improved. In such a structure, it is possible to prevent the two lamps from becoming dark by illuminating the space between the two lamps provided in parallel, and to increase the light emitting area of the entire vehicle lamp. Thereby, the visibility of the vehicular lamp is further improved, and the safety is further improved.

  According to the invention of claim 3, in addition to the effect of the invention of claim 2, light incident on the cylindrical body from the proximal end of the cylindrical body is emitted from the diffusion prism portion at the distal end of the cylindrical body. . Thereby, the front-end | tip of a cylindrical body will shine in cyclic | annular form, and a vehicle lamp will become a further novel appearance.

  According to the invention of claim 4, in addition to the effect of the invention of claim 2 or 3, light from the reflecting surface of the cylindrical body can be emitted with a small loss.

  According to the invention of claim 5, in addition to the effect of the invention of any one of claims 1 to 4, the light emitting area of the entire vehicular lamp is further increased by illuminating the tubular portion of the taller lamp. The visibility of the vehicular lamp can be further improved.

  According to the invention of claim 6, in addition to the effect of the invention of any one of claims 1 to 5, the proximal end side of the cylindrical body can be hidden by the inner panel, and the design is improved.

  According to the invention of claim 7, in addition to the effects of the invention of any one of claims 1 to 5, the base end side of the cylindrical body can be hidden by the inner panel, and the design is improved. In addition, the reflector is reflected on the inner panel, giving it a sense of depth, and the vehicular lamp becomes a fresh appearance.

  According to the invention of claim 8, in addition to the effect of the invention of any one of claims 1 to 7, since the reflector and the cylindrical body can be integrally formed, the number of parts is reduced, and the number of assembly steps is reduced. Cost is reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The vehicular lamp of the present embodiment is a rear combination lamp 1 provided in a pair of left and right at the rear end of the vehicle. Since the left and right rear combination lamps 1 are formed symmetrically, only the right rear combination lamp 1 is illustrated and described here.

  As shown in FIGS. 1 to 5, the rear combination lamp 1 includes a housing 3 having an opening that opens toward the rear of the vehicle, and an outer lens (not shown) that closes the opening of the housing 3. Two tail lamps 5A and 5B are arranged in the lamp chamber defined by the housing 3 and the outer lens. Reference numeral 7 is a turn signal lamp, and reference numeral 9 is a back lamp.

  The tail lamps 5A and 5B are arranged in a row in the vehicle width direction at substantially the same height in the horizontal direction. These tail lamps 5A and 5B have substantially the same configuration.

  As shown in FIGS. 4 to 7, the tail lamps 5 </ b> A and 5 </ b> B include a transparent tubular body 11, a reflector 13 supported by the tubular body 11, a first light source 15, a light guide body 17, and a second body. The light source 19 is provided.

  The cylindrical body 11 is formed of a transparent member. The cylindrical body 11 supports a reflector 13 on the inner peripheral side of the cylindrical body 11. Specifically, the cylindrical body 11 is integrally provided with a substantially dome-shaped support portion 21 on the inner peripheral side, and the reflector 13 is supported by the support portion 21.

  The reflector 13 is formed in a substantially dome shape, and a reflective layer is formed on the surface (concave surface) 13a. Thereby, the surface 13a of the reflector serves as a reflection surface that reflects light emitted from the light source in a predetermined direction. A reflective layer is also formed on the back surface (convex curved surface) 13 b of the reflector 13. Thereby, the light leaked to the back surface side of the reflector 13 can be reflected toward the side.

  The first light source 15 and the second light source 19 are constituted by LEDs, and both are hidden behind the inner panel 23 extending inward and outward of the cylindrical body 11 on the rear surface side of the reflector 13. A reflection layer is formed on the surface 23a of the inner panel 23, and when the reflector 13 is reflected in the reflection layer 23a of the inner panel 23, the appearance with a sense of depth is obtained.

  The light guide 17 is formed of transparent or translucent plastic, optical fiber, or the like, and transmits light incident from one end to the other end and irradiates light from the other end to the outside. That is, an incident surface 17 a facing the first light source 15 is formed at one end of the light guide 17, and an exit surface 17 b facing the reflecting surface 13 a of the reflector 13 is formed at the other end. The other exit surface 17b is located at or near the focal point of the reflector 13. The incident surface 17 a is a convex curved surface toward the first light source 15, and the output surface 17 b is a concave curved surface toward the reflector 13.

  Here, the shape of the light guide 17 will be described. The light guide 17 is formed of a substantially L-shaped rod-shaped member. More specifically, the light guide body 17 has a cylindrical shape extending from the outer peripheral side of the cylindrical body 11 in the axial direction extending portion 17d extending in the axial direction of the cylindrical body 11 and the distal end portion of the axial direction extending portion 17d. And a radially extending portion 17e extending in the radial direction toward the inner peripheral side of the body. Light incident from one end of the light guide 17 (the base end of the axial extension 17d) is transmitted to the corners of the axial extension 17d and the radial extension 17e. A reflection surface 25 is provided for total reflection toward the end (the tip of the radially extending portion 17e). A reflection surface 27 is provided at the tip of the radially extending portion 17e to totally reflect the light from the reflection surface 25 at the corner portion toward the emission surface 17b.

  With this configuration, when the first light source 15 emits light, the light from the first light source 15 enters the light guide 17 from the incident surface 17a at one end of the light guide 17, as shown in FIG. Light that has entered the light guide 17 is irradiated from the exit surface 17 b at the other end of the light guide 17 toward the reflection surface 13 a of the reflector 13 while being reflected by the reflection surfaces 25 and 27. The light irradiated on the reflecting surface 13a of the reflector 13 is reflected by the reflecting surface 13a, passes through the outer lens (shown by phantom lines in FIGS. 6a and 7), and is irradiated toward the outside (predetermined irradiation direction). Is done.

  In addition, a diffusion brism portion 29 is provided on the back surface side of the radially extending portion 17e of the light guide 17, and a part of the light in the light guide 17 is diffused and irradiated to the rear of the vehicle by the diffusion brism portion 29. (Indicated by the dotted line in FIG. 6a).

  On the other hand, the second light source 19 is arranged in an annular shape (see FIG. 1) so as to face the base end 11 a of the cylindrical body 11, and a diffusion prism portion 31 is provided at the distal end 11 b of the cylindrical body 11. Yes. Therefore, as shown in FIG. 6 a, the light of the second light source 19 that has entered the cylindrical body 11 from the base end 11 a of the cylindrical body 11 is emitted from the diffusion prism portion 31 of the distal end 11 b of the cylindrical body 11. Thereby, the front-end | tip 11b of the annular cylindrical body 11 will shine (refer FIG. 6b).

  Here, the two tail lamps 5A and 5B have slightly different shapes, and the difference will be described below with reference to FIGS.

  The cylindrical body 11 of the tail lamp 5A on the inner side in the vehicle width direction protrudes from the cylindrical body 11 of the tail lamp 5B on the inner side in the vehicle width direction by a distance d toward the rear of the vehicle. Unlike the tail lamp 5 </ b> A on the inner side in the vehicle width direction, the tail lamp 5 </ b> B on the outer side in the vehicle width direction is provided with reflecting surfaces 41 and 43 at the tip end portion 11 b of the cylindrical body 11. The reflecting surfaces 41 and 43 direct the light of the second light source 19 that has entered from the base end 11a of the cylindrical body 11 by one or more reflections toward the space between the tail lamps 5A and 5B. It is totally reflected (in other words toward the other tail lamp 5A side). The reflecting surfaces 41 and 43 are provided in a portion of the distal end portion 11 b of the cylindrical body 11 where the light guide body 17 is overlapped.

  Further, in the vicinity of the reflection surfaces 41 and 43 of the cylindrical body 11, an emission surface 45 that emits light from the reflection surfaces 41 and 43 is formed. In addition, light transmission surfaces 47 and 25 provided in parallel with the emission surface 45 of the cylindrical body 11 are formed at the corners of the light guide body 17. The light transmission surface 25 coincides with the reflection surface 25 described above.

  With such a configuration, the space between the two lamps 5A and 5B is prevented from being darkened by illuminating the space between the two lamps 5A and 5B provided in parallel. (Area) can be widened. In addition, the above-mentioned diffusion prism part 31 is provided except for the part where the light guide 17 is superimposed on the tip part 11 b of the cylindrical body 11.

  Here, in this embodiment, since the short lamp 5B is provided with a structure for irradiating light to the tall lamp 5A side (reflecting surfaces 41, 43, emitting surface 45, light transmitting surfaces 47, 25). By illuminating the cylindrical body 11 of the tall lamp 5A, the entire light emitting area of the vehicle lamp can be increased.

  The effects of this embodiment are listed below.

  (1) The vehicular lamp 1 according to the present embodiment is a vehicular lamp 1 in which two lamps 5A and 5B are provided in parallel, and each of the lamps 5A and 5B includes a transparent tubular body 11 and the tube. A dome-shaped reflector 13 fixed in the body 11, a first light source 15, and a light guide body that introduces light from the first light source 15 and emits the light from the vicinity of the focal point of the reflector 13 to the reflector 13. 17, the second light source 19 facing the proximal end of the cylindrical body 11 is disposed in one lamp 5 </ b> B, and the second light source 19 is disposed at the distal end of the cylindrical body 11. Reflective surfaces 41 and 43 are provided for reflecting the light from the light source 19 toward both lamps 5A and 5B (toward the other lamp 5A).

  Therefore, the reflector 13 that appears to float is shining in both of the two lamps 5A and 5B. Thereby, the vehicular lamp 1 becomes a novel appearance, the visibility from a third party is improved, and the safety is improved. In addition, the design is improved. In such a structure, the space between the two lamps 5A and 5B is prevented from being darkened by illuminating the space between the two lamps 5A and 5B provided in parallel. The area (the area of the bright part) can be increased. Thereby, the visibility of the vehicular lamp 1 is further improved, and the safety is further improved.

  (2) Further, in the vehicular lamp 1 according to the present embodiment, the light guide body 17 extends in the axial direction from the proximal end side of the tubular body 11 toward the distal end on the outer peripheral side of the tubular body 11. The extending portion 17d and a radially extending portion 17e extending in the radial direction from the tip end portion of the axially extending portion 17d toward the inner peripheral side of the cylindrical body 11 are configured in a substantially L shape. The reflection surfaces 41 and 43 are provided in a portion of the distal end portion of the cylindrical body 11 where the light guide body 17 is overlapped. Therefore, the layout is suitable for the shape of the light guide 17.

  (3) Moreover, the vehicular lamp 1 of this embodiment is introduced from the base end portion of the cylindrical body 11 except for a portion where the light guide body 17 is overlapped in the distal end portion of the cylindrical body 11. A diffusion prism unit 31 is provided for diffusing and irradiating light from the second light source 19. Therefore, light that has entered the cylindrical body 11 from the base end 11 a of the cylindrical body 11 is emitted from the diffusion prism portion 31 at the distal end 11 b of the cylindrical body 11. Thereby, the front-end | tip 11b of the cylindrical body 11 will shine in an annular | circular shape, and the vehicle lamp 1 will become a further novel appearance.

  (4) Further, in the vehicular lamp 1 according to the present embodiment, an emission surface 45 that emits light from the reflection surfaces 41 and 43 of the tubular body 11 is provided in the vicinity of the reflection surfaces 41 and 43 of the tubular body 11. At the same time, light transmission surfaces 47 and 25 provided in parallel with the emission surface 45 of the cylindrical body 11 are formed at the corners of the light guide body 17. Therefore, the light from the reflecting surfaces 41 and 43 of the cylindrical body 11 can be emitted with a small loss.

  (5) Moreover, since the vehicle lamp 1 of this embodiment is provided with a structure (reflecting surfaces 41 and 43) for irradiating light to the tall lamp 5A side on the short lamp 5B, the tall lamp 5B is tall. By illuminating the tubular body 11 of the lamp 5A, the light emission area of the entire vehicle lamp can be increased. Thereby, the visibility of the vehicular lamp 1 can be further improved.

  (6) Moreover, the vehicular lamp 1 of the present embodiment is provided with an inner panel 23 on the back side of the reflector 13 that extends in and out of the cylindrical body 11 and hides the proximal end side of the cylindrical body 11. Yes. Therefore, the inner panel 23 can hide the proximal end side of the cylindrical body 11 and the design is improved.

  (7) Further, in the vehicular lamp 1 of the present embodiment, the reflective layer 13 b is formed on the back surface of the reflector 13, and the reflective layer 23 a is formed on the surface of the inner panel 23. For this reason, the reflector 13 is reflected on the inner panel 23 to give a sense of depth, and the appearance of the vehicular lamp 1 is further improved. In addition, the light leaking from the light sources 13 and 19, the light guide 17 and the cylindrical body 11 is reflected by the reflective layer on the inner panel surface 23a and the reflective layer on the dome-shaped reflector back surface 13b, so that the light from the lamps 5A and 5B. It can irradiate in the lateral direction or obliquely rearward with respect to the shaft, and is suitable for the vehicular lamp 1 that irradiates a wide range in the vehicle width direction, for example.

  As mentioned above, although one embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like without departing from the gist of the present invention, included.

  For example, the reflective surface may be formed on the reflector by integrally forming the reflector and the cylindrical body with a transparent member and providing a reflective layer on the front and / or back of the reflector. In this case, since the reflector and the cylindrical body can be integrally formed, the number of parts is reduced and the number of assembling steps is reduced, so that there is an advantage that the manufacturing cost is reduced.

  Further, for example, in the present embodiment, the present invention is applied to a tail lamp of a rear combination lamp of a vehicle. However, the present invention can be applied to a turn signal wrap or a back lamp of a rear combination lamp, a clearance lamp, a daytime. It can be applied to other lamps including lamps and turn signal lamps.

The front view of the rear combination lamp as a vehicle lamp of one Embodiment of this invention. The top view of the rear combination lamp. The right view of the rear combination lamp. The perspective view of the rear combination lamp. The partial exploded perspective view of the rear combination lamp. 6A is a cross-sectional view of the main part of the rear combination lamp, and FIG. 6B is a front view of FIG. 6A. Sectional drawing which follows the VII-VII line in FIG. The expanded sectional view which expanded the principal part in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rear combination lamp 3 ... Housing 5A, 5B ... Tail lamp 7 ... Turn signal lamp 9 ... Back lamp 11 ... Cylindrical body 11a ... Base end 11b ... Tip 11b ... Tip part 13 ... Reflector 13a ... Surface (reflection surface)
13b Back surface (reflection surface)
DESCRIPTION OF SYMBOLS 15 ... 1st light source 17 ... Light guide 17a ... Incident surface 17b ... Outgoing surface 17d ... Axial direction extension part 17e ... Radial direction extension part 19 ... 2nd light source 21 ... Support part 23 ... Inner panel 23a ... Surface (reflection) Layer 25: Light transmission surface 25, 27 ... Reflection surface 29 ... Diffusion prism portion 31 ... Diffusion prism portion 41, 43 ... Reflection surface 45 ... Emission surface 47 ... Light transmission surface

Claims (8)

A vehicular lamp in which at least two lamps are provided in parallel,
Each lamp includes a transparent cylindrical body, a dome-shaped reflector fixed in the cylindrical body, a first light source, and light from the first light source to introduce the light from the vicinity of the focal point of the reflector. And a light guide that emits to
One lamp is provided with a second light source facing the proximal end of the cylindrical body, and a second light source introduced from the proximal end of the cylindrical body to the distal end of the cylindrical body. A vehicular lamp characterized in that a reflecting surface for reflecting light toward both lamps is provided. A vehicular lamp in which at least two lamps are provided in parallel,
Each lamp includes a transparent cylindrical body, a dome-shaped reflector fixed in the cylindrical body, a first light source, and light from the first light source to introduce the light from the vicinity of the focal point of the reflector. A light guide that emits to the outer periphery of the cylindrical body, an axially extending portion extending in the axial direction from the proximal end side to the distal end of the cylindrical body, and a distal end of the axially extending portion A radially extending portion extending in a radial direction from the portion toward the inner peripheral side of the cylindrical body, and a light guide configured in a substantially L shape.
One lamp is provided with a second light source facing the base end of the cylindrical body, and at least a portion of the front end portion of the cylindrical body on which the light guide body is overlapped. A vehicular lamp characterized in that a reflecting surface is provided for reflecting the light of the second light source introduced into the body toward two lamps. The vehicular lamp according to claim 2,
The one lamp diffuses the light of the second light source introduced from the base end of the cylindrical body, except for the portion where the light guide is overlapped in the distal end portion of the cylindrical body. A vehicular lamp characterized in that a diffusing prism portion for irradiation is provided. The vehicular lamp according to claim 2 or 3,
An emission surface for emitting light from the reflection surface of the cylindrical body is formed in the vicinity of the reflection surface of the cylindrical body, and the light guide is provided in parallel with the emission surface of the cylindrical body. A vehicle lamp characterized in that a light transmission surface is formed. The vehicle lamp according to any one of claims 1 to 4,
A vehicular lamp characterized in that a cylindrical body of the other lamp protrudes toward a tip side with respect to the cylindrical body of the one lamp. The vehicular lamp according to any one of claims 1 to 5,
A vehicular lamp characterized in that an inner panel is provided on the back surface side of the reflector so as to extend in and out of the cylindrical body and hide the proximal end side of the cylindrical body. The vehicular lamp according to any one of claims 1 to 5,
A reflective surface is formed on the back surface of the reflector, and an inner panel is provided on the back surface side of the reflector so as to extend in and out of the cylindrical body and hide the proximal end side of the cylindrical body, and reflects on the surface of the inner panel. A vehicular lamp characterized in that a surface is formed. The vehicular lamp according to any one of claims 1 to 7,
The reflector and the cylindrical body are integrally formed of a transparent member,
A vehicle lamp characterized in that a reflective surface is formed on the reflector by providing a reflective layer on a front surface and / or a back surface of the reflector.

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