JPH02961Y2 - - Google Patents

Description

[Detailed explanation of the idea] <Industrial application field> The present invention relates to an automobile headlamp.

<Prior Art> In a conventional automobile headlamp, as shown in FIG. 2, a drain hole 9 is formed in the lower side wall 1a of the lamp body 1, and a backflow prevention part 11 is installed in the lens directly above the drain hole 9. It extended integrally from the seal groove 12 to form a drainage structure. For this reason, the structure of the mold for molding the lamp body becomes extremely complicated, increasing the cost, and as a problem in molding, when forming the drain hole and backflow prevention plate, the rear wall of the lamp body is Since a punch hole 13 is formed in the mold, there is a problem that the punch hole must be plugged with a rubber stopper 14 or the like later. In addition, if the headlight is installed at an angle in the vertical or horizontal direction with respect to the vehicle body, or if the headlight wraps around the side of the vehicle body, the lens seal groove 12
There was a problem that the shape became very complicated, making molding even more difficult.

<Problems to be solved by the invention> The present invention was made in view of these conventional problems, and it can simplify the structure of the mold for molding the lamp body, and solve the problem that the shape of the lens seal groove is somewhat complicated. It can be easily formed even if it is a mold, reducing costs. In addition, it is possible to open a drain hole without making a mold hole in the lamp body, and it also allows for reliable water drainage and backflow. It is an object of the present invention to provide an automobile headlamp that can prevent such problems.

<Means for solving the problem> The vehicle headlamp of the present invention that achieves the above purpose is:
A bridge is installed inside the front opening of the lamp body to form a lens seal groove in cooperation with the tip edge of the front opening, and the lower rear edge of the bridge is spaced at an appropriate distance from the inner surface of the lower wall of the lamp body. This device is characterized in that a backflow prevention portion extends toward the rear, and a drain hole is formed in the front opening of the lamp body located directly below the backflow prevention portion.

<Example> Hereinafter, an example of implementing the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes a lamp body. A lens 3 is installed in the front opening 2 of the lamp body, and a reflective boundary 4 and a light source bulb (not shown) are installed inside to constitute an automobile headlamp.

A bridge 7 is installed inside the front opening 2 of the lamp body 1 and forms a lens seal groove 6 in cooperation with the tip edge 2a of the front opening 2, and the lens 3 is inserted into the lens seal groove 6. Insert the seal foot 3a and fill the lens 3 with sealant 8.
is supported in an airtight manner.

The bridge 7 includes a vertical portion 7a attached to the inner surface of the front opening 2 of the lamp body 1, and a tip edge 2a of the front opening 2.
A horizontal portion 7 which together constitutes a lens seal groove 6
b and is formed into a substantially L-shaped cross section, and the whole is formed into an annular shape along the front opening 2 of the lamp body 1. Then, the lower rear edge of the bridge 7, specifically the lower rear edge of the horizontal part 7b facing the lower wall 1a of the lamp body 1, is provided with an appropriate distance 10 from the lower wall 1a of the lamp body 1.
A backflow prevention part 7c is installed in the same body by opening the space and extending rearward. Note that the backflow prevention part 7c may be provided not only at the lower part of the bridge 7 but also in an annular manner over the entire circumference of the horizontal part 7b of the bridge 7 as in the illustrated embodiment.

Further, a drain hole 9 is formed in the front opening 2 of the lamp body 1 at a position directly below the backflow prevention part 7c extending from the lower rear edge of the bridge 7. This drain hole 9 is
It is separated from the lens seal groove 6 by the vertical part 7a of the bridge 7, and the lower wall 1a of the lamp body 1 and the bridge 7 are separated from each other by the vertical part 7a of the bridge 7.
It is communicated with the interior of the lamp body 1 through a cavity 10 formed by an extending portion 7c. And the front opening 2
A flange 2a' is integrally provided on the outer side of the tip edge 2a so as to cover the drain hole 9. By extending the flange 2a' in this manner, it becomes possible to more reliably prevent water from entering the lamp body 1 from the outside of the lamp body 1 through the drain hole 9.

<Effects of the invention> Since the automobile headlamp of the present invention is made in this way, it is no longer necessary to form the lens seal groove for airtightly supporting the lens in the same body as the lamp body, and therefore Even if the headlight body is installed at an angle in the vertical or horizontal direction, or wraps around the side of the vehicle body, the structure of the mold for molding the light body is relatively simple, reducing costs. It is possible to aim for
Further, unlike conventional products, there is no need to open a mold hole in the rear wall of the lamp body, so there is no need for a rubber plug to close the hole, and costs can be reduced in this respect as well.

In addition, a backflow prevention part is installed at the rear edge of the lower part of the bridge at an appropriate distance from the inner surface of the lower wall of the lamp body, and water is drained from the front opening of the lamp body located directly below the backflow prevention part. Since the hole is formed as an opening, the water inside the lamp body is smoothly discharged from the drain hole to the outside of the lamp body, and at the same time, there is no risk of water flowing back into the lamp body from the drain hole.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the main parts of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a conventional example. In the figure, 1 is a lamp body, 1a is a lower wall, 2 is a front opening, 2a is a leading edge, 6 is a lens seal groove, 7 is a bridge, and 9 is a drain hole.

Claims (1)

[Scope of utility model registration request] A bridge is installed inside the front opening of the lamp body to form a lens seal groove in cooperation with the tip edge of the front opening, and the lower rear edge of the bridge is spaced at an appropriate distance from the inner surface of the lower wall of the lamp body. A headlamp for an automobile, characterized in that a backflow prevention part extends toward the rear, and a drain hole is formed in the front opening of the lamp body located directly below the backflow prevention part.