JPS6131922B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a vehicle lamp having an illumination display function.

Conventionally, this type of vehicle lighting equipment includes, for example,
There is one shown in Figure 1. In the figure, 1 is a lamp body consisting of two lamp chambers 1a and 1b, L is a lens assembly consisting of a red lens 2 and an orange lens 3,
The connecting portion 4 is the convex portion 2 of the side wall 2a of the red lens 2.
b is fitted into the recess 3b of the side wall 3a of the orange lens 3 and coupled. And, the lens connected body L is
The connecting portion 4 and side walls 2a, 3a are fitted into the grooves 1c, 1d of the lamp body 1, respectively, and the lamp body 1 is mounted thereon. Note that 5 is a light bulb. (Refer to Japanese Utility Model Application Publication No. 52-133178.) In a lamp with this structure, since there is no light shield between the red lens 2 and the orange lens 3, the red lens 2
There is a drawback that light leaks from the orange lens 3 to the red lens 2 or from the orange lens 3 to the red lens 2, making it impossible to completely block light.

In order to eliminate such defects, there is a device in which a light-shielding coating film P is formed with a masking material m as shown in Fig. 2, and an orange lens 7 is connected with this coating film P in between. , since the painting is done by masking, the paint film P has a width t at the corner of the side wall 6a.
It is not formed only in the range of . Therefore, light leaks in this range and cannot be completely blocked. Moreover, the paint peels off at the welded part e between the red lens 6 and the orange lens 7, and light leaks from there. Furthermore, in order to improve the light shielding effect, it is necessary to maintain the thickness of the coating film P evenly and uniformly, which requires many man-hours and increases costs.

This invention was developed by focusing on these conventional drawbacks, and aims to prevent light leakage that occurs between a plurality of lenses covering a plurality of lamp chambers, and to have a simple structure. To provide a vehicle lamp that is easy to assemble.

That is, the lamp of the present invention will be explained with reference to the embodiments shown in FIGS. 3 and 6 (the same parts as in FIG. 1 are given the same reference numerals, and the explanation will be omitted).
A process of pre-molding the lens 8 with a convex fitting part 8b on the side wall 8a, and molding the obtained lens 8 into a mold 9.
Set it on the lower mold 9a, cover it with the upper mold 9b, and
A step of integrally molding the light shielding plate 10 on the side wall 8a by injecting a light shielding material into the inner cavity S formed along the side wall 8a, and a step 10 of the integrally molded light shielding plate 10.
A lens connected body M obtained by sequentially passing through the steps of fixing another lens 11 to lens a and connecting it to the lens 8 is constructed by covering the front surface of a lamp body 1 consisting of two lamp chambers 1a and 1b.

Here, the material of the lens and the light shielding plate is a thermoplastic synthetic resin, for example, acrylic resin, polycarbonate, etc. are used for the lens, and acrylic resin, ABS resin, etc. are used for the light shielding plate. The lens 11 and the light shielding plate 10 may be fixed to each other by, for example, welding using ultrasonic waves or bonding using an adhesive.

In the above embodiment, the case where the lens 8 is molded in advance is shown, but conversely, the light shielding plate 10 may be molded in advance and the lens connected body M may be sequentially formed by the same process. Furthermore, the light shielding plates 10 may be provided on both sides of the lens 8 at the same time, if necessary.

Next, the embodiment shown in FIG. 4 is an example in which the stepped portion 10a of the light shielding plate 10 is removed and a hook-shaped fitting portion 14 is provided between the light shielding plate 12 and the lens 13.
The embodiment shown in FIG. 5 extends the light shielding plate 10 shown in FIG.
Place the tip of the tip into the corresponding groove 15 of the lamp body 15.
This is an example of a case where the light shielding plate 16 has a structure that can be fitted in a.

Incidentally, in the above, each lens of the lens combination body is not limited to being multicolored, but of course may be of the same color.

As mentioned above, the present invention has a structure in which the light shielding plate is interposed between the lenses over the entire side wall of the lens, so there is no risk of light leaking from one lens to the other, and it is completely eliminated. Can be shaded.

Further, since either the lens or the light shielding plate of the present invention is pre-molded and the other light shielding plate or lens is integrally molded therewith, the two are firmly connected through the fitting portion, so the lens It is possible to omit the general-purpose fitting process of manufacturing the light shielding plate and the light shielding plate separately and fitting the uneven fitting portions formed thereon. Therefore, not only the cost is reduced, but also the structure is simplified, the assembly work of the lamp is simple, and the work efficiency is improved.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional vehicle lamp, Figure 2 is a conventional vehicle lamp, and Figure A is a cross-sectional view of the main part, and Figure B is an enlarged cross-sectional view of the main part of Figure A. , 3rd ~
FIG. 5 is a cross-sectional view of a main part showing an embodiment of a vehicle lamp according to this invention, and FIG. 6 is a cross-sectional view of a main part illustrating a method of integrally molding a lens and a light-shielding plate in this invention.
Figure A is a cross-sectional view of a pre-molded lens, and Figure B is a cross-sectional view of the mold in which the lens is set. 1...Lamp body, 1a, 1b...Light chamber,
8, 11... Lens, 8a... Side escape, 9... Mold, 10... Light shielding plate, M... Lens connection body.

Claims (1)

[Claims] 1. A lens or light shielding plate with a convex fitting part formed on one side wall is pre-molded and placed in a mold, and the light shielding plate or lens fixedly connected to the convex fitting part is injected into the mold. The light shielding plate and lens are integrally molded so that the light shielding plate is located on the side wall of the lens.
A vehicular lamp characterized in that a lens assembly formed by fixing and connecting another lens to the light shielding plate is placed over the front surface of a lamp body consisting of a plurality of lamp chambers.