JP2000149623A - Lighting fixture for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture and has a structure such that an entire body lights uniformly for a vehicle that provides uniform luminance distribution. SOLUTION: A lighting fixture for a vehicle has a lamp housing 12 which is attached to a corner of a vehicle body 1, 6 inner surface 17 thereof is a standing wall, and bulb 13 is provided thereon, a lens 14 which is attached to the housing 12 covering the opening thereof, and an amber cap 15 in which an outer prism 22 which covers the periphery of the bulb 13 and emits a part of the light beam of the bulb 13 toward an outside rearward is formed on the outer side of outside vehicle body, and an inner prism 23 which emits a part of the light of the bulb 13 to the inner rearward is formed on the side of inside of the vehicle body. Then the light intensity at the inside corners of the lamp housing 12 is increased by the inner prism 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp such as a turn signal lamp.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional vehicular lamp used for a front turn signal lamp. A lamp housing 1 made of a synthetic resin, a lens 2 for covering an opening on the front surface of the lamp housing 1, and a lamp And a light bulb 3 attached to the housing 1.

[0003] The lamp housing 1 is attached to a corner of the vehicle body 4. Further, the standing wall 1a of the lamp housing 1 is coated with metal or coated with metal.

[0004] The lens 2 includes the light from the bulb 3 and the upright wall 1.
The light reflected from a is transmitted. The lens 2 extends in the front-rear direction of the vehicle body, and emits light forward and outward of the vehicle body.

[0005] The bulb 3 is mounted on a socket 5. By mounting the socket 5 on the lamp housing 1, the bulb 3 is fixed in the lamp housing 1. An amber cap 6 having a translucent amber color is arranged around the bulb 3.

The amber cap 6 surrounds the bulb 3 from the surroundings by being attached to the lamp housing 1, whereby light from the bulb 3 is emitted from the lens 2 in amber color. In order to emit this light, prisms 7 and 8 are provided integrally with the amber cap 6. Among them, the prism 7 is formed on the inner surface of the front part of the amber cap 6, and acts to emit the light from the bulb 3 forward (emitted light L1). On the other hand, the prism 8 is formed on the outer surface of the amber cap 6 on the outer side of the vehicle body, and functions to emit light from the bulb 3 to the outside rear of the vehicle body (emitted light L2).

[0007]

However, in the conventional vehicular lamp, the light reaching the corner 1b of the lamp housing 1 facing the inside of the amber cap 6 has directivity in the forward direction. Therefore, when viewed from the side deviating from the directivity, the corner 1b is darkened (shown by oblique lines in FIG. 3), which makes it difficult to make the entire lamp housing 1 uniform in brightness and has a good appearance. Cannot be turned on.

The present invention has been made in view of the above-mentioned conventional problems, and is a vehicle lamp capable of making the entire lamp housing have a uniform brightness and improving the appearance of lighting. The purpose is to provide.

[0009]

In order to achieve the above object, a first aspect of the present invention is directed to a lamp housing which is provided on a corner portion of a vehicle body with an inner surface being an upright wall, a bulb provided therein, and the lamp. An amber formed with a lens attached to the lamp housing so as to cover the opening of the housing, and an outer prism that covers the periphery of the bulb and that has an outer prism on the outer side outside the vehicle body to partially emit light of the bulb outward and rearward; A vehicle lamp comprising a cap and an inner prism for emitting a part of the light of the bulb inward and rearward at an inner side of the amber cap on the inner side of the vehicle body.

According to a second aspect of the present invention, in the vehicle lamp according to the first aspect, the outer prism and the inner prism are formed to have mutually compatible light emission directions. It is characterized by the following.

[0011]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a front view thereof. The vehicular lamp 11 of this embodiment is applied to a turn signal lamp of an automobile, and includes a lamp housing 12 and a bulb 13.
, A lens 14, and an amber cap 15.

The lamp housing 12 is formed of a synthetic resin, and is attached to a corner of the vehicle body 16. Generally, in a turn signal lamp, it is necessary to emit light forward, and also to emit light laterally and backward. For this reason, the lamp housing 12 is formed in a shape extending from the front part of the vehicle body to the rear side part, and 12a is a part corresponding to the front part side of the vehicle body, 12b
Is a portion corresponding to the side rear side of the vehicle body.

The front and side surfaces corresponding to these portions 12a and 12b are opened, so that light is emitted forward, sideward, and backward. Further, metal is deposited on the inner surface 17 of the standing wall of the lamp housing 12 or a metal color coating is applied thereon, so that the inner surface 17 is decorated.

The bulb 13 is mounted inside the lamp housing 12, and lights up in this mounted state. The lamp 13 is attached to the lamp housing 12 by attaching the bulb 13 to a socket 18 and screwing the socket 18 to the lamp housing 12. Note that the packing 19 is interposed between the socket 18 and the lamp housing 12 to ensure waterproofness inside the lamp housing 12.

The lens 14 transmits light from the bulb 13 and light reflected from the inner surface 17 and is attached to the lamp housing 12 so as to cover the above-described opening of the lamp housing 12. Therefore, the lens 14
Is formed in a shape extending from the front part of the vehicle body to the rear side part.

In the lens 14 in this embodiment, a shoulder portion 14a curved in a direction approaching the vehicle body is formed at a portion corresponding to a side portion of the vehicle body, and a rear projection made of a prism is formed on the inner surface of the shoulder portion 14a. An interior 14b is formed. The rear guide portion 14b is connected to the valve 13
And light from the inner surface 17 to the rear of the vehicle body.

The amber cap 15 is fitted into a fitting portion 12c of the lamp housing 12 formed around the bulb 13, and is attached to the lamp housing 12 so as to be located around the bulb 13 by this fitting.

The amber cap 15 is provided with a screw 25 (see FIG. 2) penetrating the lower portion thereof,
It is fixed at a fixed position to the lamp housing 12 by the screw 25.

The amber cap 15 is used to indicate a right or left turn of the vehicle, and therefore has a translucent amber color. The amber cap 15 is shown in FIG.
As shown in the figure, the valve 13 is formed in an elliptical cylindrical shape extending in the vertical direction, and covers the entire periphery of the valve 13 except for opening the bottom portion where the valve 13 is inserted. The light is changed to amber and emitted outward.

The amber cap 15 in this embodiment has a front prism 21 formed on the inner surface of the front part thereof, and an outer prism 22 for emitting a part of the light of the bulb 13 outward and rearward on the outer part on the outer side of the vehicle body. Is formed, and an inner prism 23 is formed on the inner side on the inner side of the vehicle body to emit a part of the light of the bulb 13 inward and rearward. These prisms 21, 22, 23 are provided by forming fine irregularities on the peripheral surface of the amber cap 15, and act to emit light from the bulb 13 in a predetermined direction.

That is, the front prism 21 is connected to the bulb 1
3 is formed on the front surface of the amber cap 15 facing the light source 3, and emits a part of the light from the bulb 13 to the emitted light L <b> 1 radiated toward the front of the vehicle body via the lens 14. The outer prism 22 is formed on the outer surface of the amber cap 15 located on the outer side of the vehicle body, and irradiates a part of light from the bulb 13 to the outer rear side of the vehicle body via the rear guide portion 14b of the lens 14. The emitted light L2 is emitted.

The inner prism 23 is formed on the inner surface of the amber cap 15 located on the inner side of the vehicle body. This inner prism 23 converts a part of the light from the bulb 13 into
The emitted light L3 emitted toward the inside rear inside the lamp housing 12 is emitted. The emitted light L3 is applied to the base 1 of the portion 12a of the lamp housing 12 corresponding to the front side of the vehicle body.
2d, whereby the amount of light at the root 12d increases and the root 12d becomes brighter.

The other part of the light from the bulb 13 is
The light is reflected by the inner surface 17 of the lamp housing 12 and passes through the lens 14.

As described above, in the present embodiment, the light emitted from the bulb 13 passes through the front prism 21 and the outer prism 22 of the amber cap 15 and passes through the lens 14.
Through the inner prism 23 of the amber cap 15 and a part of the light is emitted to the inside rear inside the lamp housing 12. In particular, the light (emitted light L3) emitted inside and rearward in the lamp housing 12 causes the inner corner portion (root portion 12d) of the lamp housing 12 to be formed.
Is increased, and thus the entire lamp has a uniform brightness without causing light unevenness in the lamp housing 12, and the appearance can be improved.

Further, the outer prism 22 and the inner prism 23 are preferably formed to have mutually compatible light emission directions. Specifically, the outer prism 22 and the inner prism 23 are designed to emit the diffused lights L2 and L3 at the same emission angle θ (see FIG. 1). The emission angle θ is set to, for example, 45 °.

In this case, even when the amber cap 15 is installed inside and outside upside down, the emission direction of the light emitted from the bulb 13 is the same as that in the normal assembly. For this reason, when assembling the amber cap 15, it is not necessary to position the inner and outer portions, so that not only the assemblability is improved, but also the vehicle lamps on both sides of the vehicle body can be constituted by the common amber cap 15, Thereby, the number of parts can be reduced.

[0027]

According to the first aspect of the present invention, the light emitted from the bulb passes through the front surface and the outer prism of the amber cap, and is emitted to the front, the outside, and the outside rear of the vehicle body via the lens. Exits through the inner prism of the amber cap to the inside rear inside the lamp housing. Due to the light emitted inside and rearward in the lamp housing, the amount of light reaching the inner corner of the lamp housing increases, whereby the entire lamp has a uniform brightness and the appearance can be improved.

According to the second aspect of the present invention, since the outer prism and the inner prism are formed so as to have mutually compatible light emitting directions, even when the amber cap is installed inside and outside reversed. The light emitted from the bulb is emitted in the same direction. For this reason, when assembling the amber cap, it is not necessary to position the inner and outer portions, so that not only the assemblability is improved, but also the vehicle lamps on both sides of the vehicle body can be constituted by a common amber cap. The number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of the present invention.

FIG. 2 is a front view of one embodiment.

FIG. 3 is a sectional view of a conventional vehicle lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Vehicle lamp 12 Lamp housing 13 Bulb 14 Lens 15 Amber cap 16 Body 17 Inner surface 22 Outer prism 23 Inner prism

Claims (2)

[Claims] 1. A lamp housing having an inner surface formed as an upright wall and having a bulb provided therein and attached to a corner portion of a vehicle body, a lens attached to the lamp housing so as to cover an opening of the lamp housing, and the bulb. And an amber cap having an outer prism formed on an outer portion on the outer side of the vehicle body to emit part of the light of the bulb outward and rearward, wherein the amber cap is located on the inner side of the vehicle body. A vehicle lamp characterized in that an inner prism for emitting a part of the light of the bulb inward and rearward is formed in an inner portion of the vehicular lamp. 2. The vehicular lamp according to claim 1, wherein the outer prism and the inner prism are formed so as to have mutually compatible light emission directions. Lights.