JPS6134643Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an improvement in the drainage/breathing structure of a lamp housing for an automobile lamp.

[Conventional technology]

Conventionally, in order to allow the expansion and contraction of the air inside the lamp housing of an automobile lamp due to temperature changes, and to discharge the moisture inside the lamp housing to the outside due to the expansion and contraction of the air, as shown in FIG. , a hose connecting pipe 3 that projects from the lamp housing 1 toward the back side and forms a water drain/breathing hole 2 that communicates the inside and outside of the lamp housing 1; one end is fitted into the hose connecting pipe 3, and the other end is connected to the lamp housing 1; There is a lamp housing water drainage/breathing structure for an automobile lamp which has a substantially U-shaped hose 4 facing the back surface of the housing 1. Number 5 in the diagram
indicates a lamp lens.

The U-shaped hose 4 is molded from hard synthetic resin, and when attached to the hose connection pipe 3, the other end is located below the hose connection pipe 3, and moisture in the lamp housing 1 is removed. However, the hose 4
This prevents moisture from dripping downward from the other end and from flowing back into the lamp housing 1 from outside.

[Problem that the invention attempts to solve]

However, one end of the hose 4 is only fitted to the hose connection pipe 3, and can be easily swung around the hose connection pipe 3, for example, as shown by the two-dot chain line in FIG. It has become a state.

Therefore, for example, when the other end of the hose 4 is swung to a position lateral to or above the hose connection pipe 3, external moisture may flow back into the lamp housing 1. There was a problem.

Furthermore, even if the hose 4 is installed in the normal position, the other end of the hose 4 may be in an upward position due to variations in the manufacture of the hose 4, changes in ambient temperature, etc. In this case, there is also the problem that moisture may accumulate at the other end of the hose and may flow back into the lamp housing 1.

[Purpose of the invention] This invention was devised in view of the above-mentioned conventional problems, and uses a simple structure to prevent the hose from swinging around the hose connection pipe. An automotive lamp that is designed so that the other end of the hose is always located below the hose connection pipe and that the other end of the hose does not face upward to prevent moisture from flowing into the lamp housing. The purpose is to provide a drainage/breathing structure for lamp housings.

[Means for solving problems]

This invention includes a hose connecting tube that projects from the lamp housing toward the back side and forms a water drain/breathing hole that communicates the inside and outside of the lamp housing; In the lamp housing water drainage/breathing structure for an automobile lamp, the other end of the hose is located on the back surface of the lamp housing, and the other end of the hose is located approximately below the hose connection pipe. The above object is achieved by providing a pair of tapered projections that abut and lock both outer surfaces of the U-shaped bottom of the hose.

[Effect]

In this device, the pair of tapered protrusions abuts on both outer surfaces of the U-shaped bottom of the hose, so the hose is restricted so that the other end is located approximately below the hose connection pipe, and the hose is When the other end tries to turn upward, it comes into contact with the thicker diameter part of the tapered projection and prevents this.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the above-mentioned FIG. 1 and FIG.
Portions that are the same as or corresponding to the lamp housing water drainage/breathing structure of the conventional automobile lamp shown in the figure are given the same reference numerals, and the explanation thereof will be omitted.

As shown in FIGS. 3 and 4, this embodiment includes a hose connection pipe 3 that projects from the lamp housing 1 toward the rear and forms a drain/breathing hole 2 that communicates the inside and outside of the lamp housing 1; A lamp housing water drainage/breathing structure for an automobile lamp comprising a substantially U-shaped hose 4 having one end fitted to the hose connection pipe 3 and the other end facing the rear surface of the lamp housing 1, On the back surface of the lamp housing 1, a pair of screws are provided on the back side of the lamp housing 1, which abut and lock both outer surfaces of the U-shaped bottom of the hose 4 so that the other end of the hose 4 is positioned substantially below the hose connection pipe 3. Tapered projections 6A, 6B
It has been established.

The projections 6A, 6B are integrally molded with the lamp housing 1, and when the hose 4 is fitted into the hose connection pipe 3, the hose 4 is installed so as to be located between the pair of projections 6A, 6B.

Therefore, the hose 4 attached to the hose connection pipe 3 is prevented from swinging around the hose connection pipe 3, and the other end of the hose 4 swings upward, allowing water to escape from there. Backflow into the lamp housing 1 will be prevented.

Furthermore, when the other end of the hose 4 tends to be directed upward due to variations in the manufacturing process, changes in the ambient temperature of the hose 4 when it is installed, etc., the other end of the hose 4 is bent upward. The pair of protrusions 6A, 6B come into contact with the proximal portions of the pair of protrusions 6A, 6B, that is, the portions with larger diameters than the tips thereof, thereby preventing upward deformation.

Therefore, water is prevented from accumulating at the other end of the hose 4 and water is prevented from flowing back into the lamp housing 1.

Furthermore, in the above embodiment, the protrusions 6A, 6B
Since the projection 6 has a tapered shape, the workability when fitting the hose 4 to the hose connection pipe 3 is improved.
It is not lowered by A or 6B.

That is, since the protrusions 6A and 6B have a tapered shape, when fitting the hose 4 to the hose connection pipe 3, the distance between the tips of the protrusions 6A and 6B should be set in advance to be larger than the diameter of the hose 4. This makes the fitting work easier.

[Effect of idea]

Since the present invention is configured as described above, it is possible to prevent the hose from swinging around the hose connection pipe and to prevent upward deformation of the other end of the hose with a simple configuration. This has the excellent effect of preventing water from flowing back into the lamp housing through the hose.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a conventional lamp housing water drainage/breathing structure of an automobile lamp, Fig. 2 is a side view of the same, and Fig. 3 is a sectional view of a lamp housing water drainage/breathing structure of an automobile lamp according to the present invention. FIG. 4 is a sectional view similar to FIG. 1 showing the embodiment, and FIG. 4 is a side view thereof. 1... Lamp housing, 2... Water drain/breathing hole, 3... Hose connection pipe, 4... Hose, 6A,
6B... Protrusion.

Claims (1)

[Scope of utility model registration request] a hose connection pipe that projects from the lamp housing toward the back and forms a drain/breathing hole that communicates the inside and outside of the lamp housing; In the lamp housing water drainage/breathing structure for an automobile lamp, the lamp housing has a U-shaped hose, and the other end of the hose is located substantially below the hose connection pipe on the back surface of the lamp housing. A lamp housing drainage/breathing structure for an automobile lamp, characterized in that a pair of tapered protrusions abuts and locks both outer surfaces of the U-shaped bottom of the hose.