JPH10340601A - Vehicle lighting - Google Patents

Abstract

(57) [Problem] To provide a vehicular lamp that can not only be inexpensive and lightweight, but also prevent the occurrence of sink marks. A front opening (2) is provided in a synthetic resin housing (2).
e, 2f are formed, and front openings 2e, 2
f is closed, valve insertion openings 2a, 2b are formed in the reflection portions 2g, 2h of the housing 2, and a space E is formed by gas injected when the housing 2 is formed in the thick portion of the housing 2. ing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp having a resin reflector.

[0002]

2. Description of the Related Art Conventionally, for a vehicle lamp such as a rear combination lamp, for example, a housing is formed of synthetic resin so as to have a plurality of front openings, and the plurality of front openings are closed by a lens. A valve having a valve insertion opening formed in a rear wall is known.

In such a rear combination lamp, a parabolic reflector is integrally formed on the rear wall of the housing, and a reflective film is deposited on the surface of the reflector to deposit a bulb insertion opening. There is known an illumination light beam emitted from a bulb held by a light source and reflected toward a lens.

[0004]

By the way, the vehicular lamp configured as described above, particularly the above-described housing,
A complicated shape has to be taken into consideration in consideration of the characteristics and light distribution of each lamp, or the shape of the vehicle body or the vehicle body mounting portion, so that a partially thick portion (a snake portion) is formed.

[0005] If such a snake portion is formed on the back side of the reflector portion, there is a problem that an invalid area is formed in a part of the reflector portion due to sinkage during molding of the housing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a vehicular lamp which can not only be inexpensive and lightweight, but also can prevent the occurrence of sink marks. .

[0007]

According to one aspect of the present invention, there is provided a resin reflector on which a reflective film for reflecting an illumination light beam emitted from a bulb located in a lamp chamber is deposited. The gist of the present invention is that the space portion is formed by the gas injected when the reflector is formed in the thick portion of the reflector.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a vehicular lamp according to the present invention is applied to a rear combination lamp, and FIG.
4 through FIG.

In FIG. 1, a rear combination lamp 1 includes a housing 2 made of a synthetic resin, lenses 3 and 4 mounted on the housing 2, and bulbs 5 and 6 held on the housing 2.

The housing 2 has valves 5 and 6 inserted therein and, as shown in FIG. 2, a valve insertion opening 2 in which valve holders 7 and 8 for holding the valves 5 and 6 are mounted.
a, 2b and peripheral walls 2c, 2d surrounding the valve insertion openings 2a, 2b are formed by integral molding of resin.
Further, a plurality of lamp chambers 9 and 10 are formed by closing a plurality of front openings 2e and 2f formed by distal ends of the peripheral walls 2c and 2d with lenses 3 and 4, respectively. In addition, the housing 2 has reflectors 2g and 2h as reflectors for reflecting the illumination light beams emitted from the bulbs 5 and 6 toward the lenses 3 and 4, and separately from the reflectors 2g and 2h, FIG.
As shown in FIG. 4, the design portions 2i and 2j which are turned to the side of the vehicle body from the viewpoint of the design are integrally formed.
The reflecting portions 2g and 2h also serve as the rear wall of the housing 2.

A front opening 2 is provided at the tip of the peripheral walls 2c and 2d.
e, 2f a flange 2 having engagement grooves 2k, 2l extending along the opening edges protruding from the peripheral walls 2c, 2d in a substantially L-shape.
m, 2n. Also, the engagement grooves 2k,
The legs 3a, 4 protruding from the lenses 3, 4 in a state where the sealing agent 11 such as a hot melt material is filled in the 2l.
a is engaged.

On the other hand, when the housing 2 is molded, as shown by arrows a and b in FIG. 2, gas is injected from injection nozzles (not shown) located below the vehicle body and at two locations on the left and right in the vehicle width direction. Is introduced so as to go around the valve holders 7 and 8 as shown by the two-dot chain line in FIG.
Gas flows in along the snake meat portion located on the back side of h, and as shown by arrows c and d, gas escapes from two places on the left and right in the vehicle width direction above the vehicle body, so that a space is formed in the snake meat portion E is formed.

The bulb 5 shown in FIG. 3 is used as a tail stop lamp constituting the rear combination lamp 1, and the bulb 6 shown in FIG. 4 is used as a turn signal lamp constituting the rear combination lamp 1. I have.

As described above, since the space portion E is formed in the snake portion of the housing 2 corresponding to the reflecting portions 2g and 2h, occurrence of sink in molding can be prevented, and loss of the reflecting region can be prevented. can do.

In the above-described embodiment, the case where the reflecting portions 2g and 2h corresponding to the reflectors are integrally formed in the housing 2 is disclosed. However, a resin-made reflector separate from the housing 2 (for example, a tiltable Even in a thick portion such as a connecting portion of the reflector with the housing), by forming the same space as the space E described above, generation of sink can be prevented.

[0016]

As described above, in the vehicular lamp according to the present invention, the space portion is formed by the gas injected when forming the reflector in the thick portion of the reflector, so that the cost is reduced. In addition to being lightweight, it is possible to prevent the occurrence of sink marks.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a rear combination lamp, showing a vehicle lamp according to an embodiment of the present invention.

FIG. 2 is a rear view of the rear combination lamp.

FIG. 3 is a cross-sectional view of a tail stop lamp constituting the rear combination lamp.

FIG. 4 is a cross-sectional view of a turn signal lamp constituting the rear combination lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rear combination lamp (vehicle lamp) 2 ... Housing 2e ... Front opening 2f ... Front opening 2g ... Reflection part (reflector) 2h ... Reflection part (reflector) E ... Space part

Claims (1)

[Claims] 1. A vehicular lamp having a resin-made reflector on which a reflection film for reflecting an illumination light beam emitted from a bulb located in a lamp chamber is formed. A vehicular lamp, wherein a space is formed by the injected gas.