JPS5921464Y2 - Mounting structure of heat shield plate in resin vehicle light fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a heat shield plate installed in a housing near a light source of a resin vehicle lamp.

As shown in Fig. 1, the resin vehicle lamp has a heat shield plate f on the inner surface of the side wall of the resin housing a, which is close to the light source.
is installed to prevent heat deformation of the uzing.

That is, conventionally, as shown in FIG. 1, the upper end of the heat shield plate f is bent to form the mounting part g, and the lower end thereof is fitted into the groove part C formed in the housing. g is attached and fixed by caulking with a protrusion e on the upper opening edge d of the housing.

However, with this type of conventional mounting structure, if the lamp chamber is narrow, it may not be possible to form a protrusion for caulking on the opening edge of the housing, and furthermore, direct light from the light source may cause damage to the 1711 side. A dark area A occurs in the area, making it impossible to obtain the desired light distribution and impairing visibility.

Furthermore, since the upper end of the heat shield plate f is bent to form the mounting part g, a large amount of material is used, and the mounting is fixed by caulking, so if it is not completely fixed, it may wobble due to vibration etc. There is a possibility that this may occur.

In view of the above-mentioned circumstances, it is an object of the present invention to provide a heat shield mounting structure in which the heat shield plate device is simple and easy, and can be securely fixed.

Hereinafter, embodiments of the heat shield plate mounting structure according to the present invention will be described with reference to the accompanying drawings.

FIGS. 2 to 5 show an embodiment of the present invention, and as shown in FIG. A light source bulb 3 held by a cover 4 is disposed, and a heat shield plate 5 is attached to the inner surface of the side wall portion 11 of the housing 1 near the light source bulb 3.

The mounting structure of the heat shield plate 5 installed in the housing 1 will be described in detail. As shown in FIGS. Projecting pieces 51 and 52 facing the same direction are formed, and the bottom part thereof is bent horizontally to form a bottom piece part 53, and furthermore, a semicircular notch part 54 is formed approximately at the center of the bottom piece part 53. has been done.

Further, the heat shield plate 5 is formed in such a shape that the center portion thereof slightly protrudes toward the bottom piece portion 53 side when viewed from above.

Inside the housing 1, as shown in FIGS. 4A to 8,
The side wall portion 1 extends from the lower part of the side wall portion 11 to the rear wall portion 12.
A pair of hook-shaped support parts 13 and 1 facing each other substantially parallel to 1.
4 is formed, and furthermore, a pair of hook-shaped support parts 13 and 1 are formed.
A semicircular projection 15 is formed approximately at the center of the rear wall portion 12 located between the rear wall portion 12 and the rear wall portion 4.

In order to attach the heat shield plate 5 configured as described above to the housing 1, protrusions 51 formed on both lower side edges of the heat shield plate 5 are used.
, 52 between the inner surface of the side wall portion 11 of the housing 1 and the pair of hook-shaped support portions 13 and 14, and the notch portion 54 of the bottom piece portion 53 of the heat shield plate 5 is fitted into the protrusion 15 of the housing. let

In this way, since the protrusion 15 of the housing fits into the notch of the bottom piece 53 of the heat shield plate 5, the heat shield plate 5 is pressed in the direction of the side wall part 11, and the protrusions 51 and 52 are It is bent between the hook-shaped support part 13.14 and the side wall part 11, and its upper end is fixed in a state where it bites into the hook-shaped support part 13.14.

Therefore, once the heat shield plate 5 is attached to the housing 1, there is no risk of it shaking due to vibration, etc., and it can be installed even in a light room with a small space by simply inserting the heat shield plate. It can be installed securely.

As described above, in the present invention, protrusions facing diagonally upward are formed on both sides of the lower part of the heat shield plate, and a bottom piece part having a notch is formed at the bottom part, and the housing has a side wall part to a rear wall part. A pair of hook-shaped support portions are formed extending substantially parallel to the side wall portions and facing each other, and protrusions that fit into the notches of the heat shield plate are provided on the rear wall portion, and protrusions on both sides of the heat shield plate are formed. The heat shield is inserted between the side wall of the housing and the hook-shaped support to lock the tip of the protrusion to the hook-shaped support, and the protrusion on the housing side is fitted into the notch in the bottom piece. Since the heat shield is pressed against the side wall of the housing, just by inserting the heat shield, the ends of the protrusions on both sides engage the hook-shaped support parts to fix the heat shield, and the notch in the bottom piece By fitting with the protrusions on the housing side, the heat shield plate is pressed toward the side wall, and thus the heat shield plate can be easily and easily fixed to the housing. Since it is not provided, there is no risk of dark areas forming on the lens surface, and once it is attached, it can be held securely without wobbling due to vibrations or the like.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a conventional mounting structure. FIG. 2 is a longitudinal sectional view showing an example of the implementation of the present invention. FIG. 3 shows a heat shield plate used in the present invention, where A is a front view, the opening is a sectional view taken along the line A--A in Figure A, and C is a top view. Figure 4 shows knowing using the present invention.
A is a top view, the mouth is a sectional view taken along line BB in figure A, and C is C- in figure A.
It is a sectional view taken along line C. FIG. 5 is a plan view showing the attached state. 1... Housing, 11... Side wall part,
12...Bottom wall part 9.13.14...Hook-shaped support part, 15...Protrusion, 2...Lens, 3...・Light source, 4...Cover, 5・
...Heat shield plate, 51.52 ...Protrusion piece, 53
...Bottom piece part, 54...Notch part.

Claims (1)

[Scope of utility model registration request] In a resin vehicle lamp in which a heat shield plate is attached to the inner surface of a side wall portion of a resin housing, protrusions facing obliquely upward are formed on both sides of the lower part of the heat shield plate, and a bottom piece portion having a notch portion at the bottom portion is formed. On the other hand, the housing has a pair of hook-shaped support parts facing each other substantially parallel to the side wall part from the side wall part to the rear wall part, and the rear wall part has a pair of hook-shaped support parts that are fitted into the notch part of the heat shield plate. The protrusions on both sides of the heat shield plate are inserted between the side wall of the housing and the hook-shaped support part, and the tips of the protrusions are locked to the hook-shaped support part, and the notch in the bottom piece is provided. A mounting structure for a heat shield plate in a resin vehicle lamp, characterized in that the heat shield plate is pressed against a side wall portion of the housing by fitting the protrusion of the housing into the housing.