JPH11321438A - Lighting fixture for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the depth dimension of a device by arranging a second light source bulb at a position displaced from an optical axis of a first light source bulb. SOLUTION: In this lighting fixture, a second light source bulb 5D is arranged at a position displaced from an optical axis Z-Z of a first light source bulb 5C. With this structure, since the first light source bulb 5C and the second light source bulb 5D are arranged on separate optical axes Z-Z, Z'-Z', dimension in the optical axis Z Z direction, namely the depth dimension S is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp comprising a first lamp room at a central portion and a second lamp room at an annular periphery around the first lamp room. The present invention relates to a vehicular lamp such as a rear combination lamp, and more particularly to a vehicular lamp having a small depth dimension.

[0002]

2. Description of the Related Art A conventional vehicle lamp of this type will be described with reference to FIGS. In this example, a description will be given of a rear combination lamp provided on both left and right sides (in this example, left side) of a rear portion of an automobile. In FIG. 4,
Hatching is omitted in the reading of the drawings. In the drawing, A is a rear combination lamp, and this rear combination lamp A is composed of a combination of a tail / stop lamp B, a turn lamp C, and a tail lamp D.

[0003] This rear combination lamp A is
A lamp room 4 (4C, 4D) is defined by the lamp housing 1, the inner housing 2, and the retroreflective lens 3A and the lenses 3B, 3C, 3D as outer housings. That is, the lamp chamber (not shown) for the tail / stop lamp B is formed by the lamp housing 1, the retroreflective lens 3A and the red lens 3B, and the inner housing 2 and the amber lens 3C as the first lens.
(Hereinafter, referred to as a first lens 3C), a lamp room 4C for a turn lamp C as a first lamp room (hereinafter, a first lamp room 4C).
), A lamp room 1 for a tail lamp D as a second lamp room by a lamp housing 1 and a red lens 3D as a second lens (hereinafter, referred to as a second lens 3D).
D (hereinafter, referred to as a second lamp room 4D) are defined respectively. The first lamp room 4C at the center has a circular shape, and the second lamp room 4D around the first lamp room 4C has an annular shape.

A light source bulb 5 (5C, 5D) of a lamp of each function is arranged at a predetermined position in each of the lamp chambers 4 described above. For example, a light source bulb (not shown) for the tail / stop lamp B is provided at a predetermined position in the lamp room for the tail / stop lamp B, and a first light source valve is provided at a predetermined position in the lamp room 4C for the turn lamp C. Light source bulb 5C for turn lamp C (hereinafter referred to as first light source bulb 5C)
Is located at a predetermined position in the lamp room 4D for the tail lamp D.
Light source bulb 5D for tail lamp D as light source bulb
(Hereinafter, referred to as a second light source bulb 5D). The light source bulb 5 (5C, 5D) is detachably attached to the inner housing 2 and the lamp housing 1 via sockets 6C, 6D.

In each of the lamp chambers 4, there is provided a reflecting surface 7 for reflecting light from the light source bulb 5 to the lenses 3B, 3C and 3D.
(7C, 7D) are integrally provided on the inner surfaces of the lamp housing 1 and the inner housing 2. In this example,
A reflective surface (not shown) for the tail / stop lamp B is provided on the inner surface of the lamp housing 1, and a reflective surface 7C (hereinafter, referred to as a first reflective surface) for the turn lamp C is provided on the inner surface of the inner housing 2 as a first reflective surface. Similarly, a reflection surface 7D for the tail lamp D (hereinafter, referred to as a second reflection surface 7D) is provided on the inner surface of the lamp housing 1 as a second reflection surface. Instead of the reflecting surface 7 integral with the inner surfaces of the lamp housing 1 and the inner housing 2, a reflector that is separate from the lamp housing 1 and the inner housing 2 and has a reflecting surface may be used.

The first reflecting surface 7C and the second reflecting surface 7D
Each have a paraboloid of revolution, and the central axis of the paraboloid of revolution, that is, the optical axis ZZ is common.
The first light source bulb 5C and the second light source bulb 5D are arranged on the common optical axis ZZ.

In the drawings, reference numeral 8 denotes a rim having a front cover shape. The front cover-shaped rim 8 is fixed to the lamp housing 1 by a screw or the like, and covers the front side of the lamp housing 1. The rear combination lamp A is configured as described above, and is mounted on the left and right sides (the left side in the illustrated example) of the rear part of the vehicle.

When the light source bulb 5 is turned on, the light from the light source bulb 5 is reflected by the reflection surface 7, the reflected light is colored through the lenses 3B, 3C, 3D, and the colored light is The light is radiated to the outside in a predetermined light distribution pattern, and can perform a tail / stop lamp B function, a turn lamp C function, and a tail lamp D function. When external environmental light is incident on the retroreflective lens 3A, the incident light is retroreflected and emitted again to the outside.

[0009]

However, the above-mentioned conventional vehicle lamp, namely, a first lamp room 4C at the center and a second lamp room 4D at the annular periphery around the first lamp room 4C. As shown in FIG. 4, the turn lamp C and the tail lamp D are configured such that the first light source bulb 5C and the second light source bulb 5D are arranged on a common optical axis Z-Z. There is a problem that the depth dimension L of the lamp, that is, the dimension L in the optical axis ZZ direction is large.

An object of the present invention is to provide a vehicular lamp having a small depth dimension.

[0011]

In order to achieve the above object, the present invention is characterized in that a second light source bulb is disposed at a position off the optical axis of the first light source bulb.

As a result, in the vehicle lamp according to the present invention, the first light source bulb and the second light source bulb are arranged not on the common optical axis but on separate optical axes, respectively. That is, the depth dimension becomes small.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicular lamp according to the present invention will be described below with reference to FIGS. In this example, a tail lamp D among rear combination lamps provided on both left and right sides (left side in this example) of a rear portion of an automobile will be described. In the drawing, the same reference numerals as those in FIGS. 3 and 4 denote the same components. In FIG. 1, hatching is omitted for the sake of reading the drawing.

The vehicular lamp of the present invention in this embodiment is a turn lamp comprising a first lamp room 7C at the center and a second lamp room 7D at the annular periphery around the first lamp room 7C. C and the tail lamp D, the second light source bulb 5
D is disposed at a position off the optical axis ZZ of the first light source bulb 5C. That is, the second reflection surface 7
D represents a vertical center line (shown by a broken line in FIG. 2).
The reflecting surfaces 7D of the left and right divided regions are divided into first and second light source bulbs 5C.
, Ie, the optical axis ZZ of the first reflecting surface 7C.
Are respectively formed on a paraboloid of revolution having an optical axis Z'-Z 'parallel to the rotation axis. The second light source bulb 5D is positioned on the optical axis Z'-Z 'of the reflection surface 7D in the left and right regions.
Are arranged respectively. As a result, even if the optical axis Z-Z of the first light source bulb 5C and the first reflection surface 7C is displaced from the optical axis Z'-Z 'of the second light source bulb 5D and the second reflection surface 7D, the first Parallel light is obtained on the reflection surface 7C, and parallel light is also obtained on the second reflection surface 7D. The second light source bulb 5D is arranged at a position hidden by the inner housing 2 and invisible from the second lens 3D side.

In the vehicle lamp of the present invention in this embodiment, the second light source bulb 5D is arranged at a position deviated from the optical axis ZZ of the first light source bulb 5C.
The first light source bulb 5C and the second light source bulb 5D are arranged not on a common optical axis but on separate optical axes ZZ and Z'-Z '. As a result, the optical axis direction Z'-
The dimension S of Z ′, that is, the depth dimension S is compared with the depth dimension L of the conventional vehicle lamp in which the first light source bulb 5C and the second light source bulb 5D are arranged on the common optical axis ZZ. And small.

In the above-described embodiment, the example of the rear combination lamp A provided on the left and right sides (the left side in this example) of the rear portion of the automobile has been described. However, the present invention is applicable to other vehicle lamps. Can be used.

[0017]

As is apparent from the above description, the vehicular lamp according to the present invention has the second light source located at a position off the optical axis of the first light source bulb.
Since the light source bulbs are arranged, the first light source bulb and the second light source bulb are arranged not on a common optical axis but on separate optical axes, respectively.
That is, the depth dimension becomes small.

[Brief description of the drawings]

1 is a partial cross-sectional view showing one embodiment of a vehicular lamp of the present invention, and corresponds to a cross-sectional view taken along line IV-IV in FIG. 2;

FIG. 2 is also a partial front view.

FIG. 3 is a front view showing a conventional vehicular lamp.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

[Explanation of symbols]

A: rear combination lamp, B: tail / stop lamp, C: turn lamp, D: tail lamp, 1
... Lamp housing, 2 ... Inner housing (light fixture structure), 3A ... Retroreflective lens, 3B ... Lens (tail / stop lamp B lens), 3C ... First lens (turn lamp C lens), 3D ... Second Lens (lens of tail lamp D), 4 ... light room, 4C ... first light room (light room of turn lamp C), 4D ... second light room (light room of tail lamp D), 5 ... light source bulb, 5C ... 1 light source bulb (light bulb of turn lamp C), 5D second light bulb (light bulb of tail lamp D), 6C, 6D socket
7: reflection surface, 7C: first reflection surface (reflection surface of turn lamp C), 7D: second reflection surface (reflection surface of tail lamp D),
8. Rim, ZZ ... Optical axis of first light source bulb, Z'-Z '
... Optical axis of the second light source bulb, S: depth dimension.

Claims (1)

[Claims] An inner housing and a first lens define a first lamp chamber in a central portion, and an outer housing and a second lens form a second lamp chamber in an annular peripheral portion around the first lamp chamber. A first light source bulb and a first reflection surface for reflecting light from the first light source bulb toward the first lens are disposed in the first lamp chamber; The second light source bulb and its second
In a vehicle lamp in which a second reflecting surface for reflecting light from a light source bulb toward the second lens is disposed, the second light source bulb is disposed at a position off the optical axis of the first light source bulb. A vehicular lamp characterized in that: