JP3428239B2 - Respiratory structure of vehicle equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lamp such as a headlamp and a fog lamp, a vehicular decorative device such as a rear finisher and a garnish, and the like. A light room and a room are defined by this, and in connection with a breathing structure of a device for a vehicle that performs breathing in the light room and the room,
In particular, the present invention relates to a breathing structure of a vehicle device capable of reducing the number of parts and reducing costs. 2. Description of the Related Art Vehicle equipment such as vehicle lamps such as headlamps and fog lamps are provided with a breathing structure for breathing indoors in a substantially closed state.
As this breathing structure, a housing is provided with a breathing hole that communicates between the room and the outside, and a grommet that prevents water from entering the room through the breathing hole into a boss provided at the periphery of the breathing hole. Will be attached. [0003] However, the above-mentioned conventional breathing structure requires a grommet separate from the housing, and thus has a problem that the number of parts is large and the cost is high. An object of the present invention is to provide a breathing structure of a vehicle device which can reduce the number of parts and cost. According to the present invention, in order to achieve the above object, a breathing cylinder for forcibly breathing indoors through a breathing hole by negative pressure is integrally formed with a housing in a vertical direction. It is characterized by being provided. According to the present invention, since the opening of the breathing cylinder receives wind pressure during traveling of the automobile and has a negative pressure in the breathing cylinder, the air is forced to flow through the breathing cylinder. In addition, the flow velocity of the air that has flowed into the respiratory cylinder increases, and the respiratory action in the room can be forcibly performed through the respiratory cylinder and the breathing hole. In addition, since the respiratory cylinder is provided integrally with the housing, another component such as a grommet is not required. As a result, the number of parts can be reduced and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a respiratory structure of a vehicle device according to an embodiment of the present invention. In this example, an example in which the invention is applied to a vehicle lamp such as a headlamp will be described. In the figure, reference numeral 1 denotes a housing. The housing 1 is made of, for example, a synthetic resin. A lamp chamber 10 is formed by the housing 1 and a lens (not shown). A light source bulb 11 is arranged in the lamp room 10. The light source bulb 11 is detachably attached to a socket 12, and the socket 12 is detachably attached to a housing. The housing 1 is provided with a breathing hole 13 for communicating the inside of the lamp room 10 with the outside. This breathing hole 1
3 forms a small triangle. A respiratory cylinder 2 is provided integrally with the housing 1 in the vertical direction. The respiratory cylinder 2 has a hollow rectangular cylindrical shape, and has upper and lower ends 20 and 21 opened. The upper opening 20 of the respiratory cylinder 2 slightly protrudes above the upper wall of the housing 1, and is configured to receive wind pressure when the automobile is running. The respiratory cylinder 2 covers the respiratory hole 13 and accelerates the flow rate of the air flowing into the respiratory cylinder 2 to perform respiration in the light chamber 10 through the respiratory hole 13. . A waterproof wall 22 for preventing water from penetrating into the light chamber 10 through the breathing hole 13 is integrally provided at a position above the breathing hole 13 in the breathing cylinder 2. Is provided. The waterproof wall 22 has a U shape. The housing 1 and the breathing cylinder 2 having the above-described integral structure can be integrally formed by using a mold whose arrow 3 in FIG. 4 coincides with the direction in which the slide mold is pulled out. The respiratory structure of the vehicle device according to the present invention in this embodiment has the above-described structure.
The upper opening 20 of the respiratory cylinder 2 receives wind pressure during traveling of the automobile, and the inside of the respiratory cylinder 2 becomes negative pressure, so that air flows through the respiratory cylinder 2 as shown by the solid arrow in FIG. Lower opening 21
From the upper opening 20. In addition, the flow velocity of the air flowing into the breathing cylinder 2 increases. As a result, the breathing in the light room 10 is forcibly performed through the breathing hole 13, the breathing cylinder 2, the upper opening 20, and the lower opening 21. Particularly, in this embodiment, the respiratory cylinder 2
Since the waterproof wall 22 is provided inside the respiratory cylinder 2
When the water is covered with water, even if the water flows into the respiratory cylinder 2 from the upper opening 20 as shown by a dotted arrow in FIG. Light room 1
0, and flows out from the lower opening 21 to the outside without entering. In particular, since the space between the inner surface of the respiratory cylinder 2 and both ends of the waterproof wall 22 is narrow, the amount of water flowing from the upper opening 20 can be kept constant. Moreover, even if the respiratory cylinder 2 is covered with a large amount of water, the upper opening 20 once regulates the amount of water flowing into the respiratory cylinder 2, and the inner surface of the respiratory cylinder 2 and the waterproof wall 22. The amount of water falling between both ends can be kept small and constant. As a result, the breathing hole 13 does not receive a large amount of water, and can perform a stable breathing action. In this embodiment, an example in which the present invention is applied to a vehicle lamp such as a headlamp has been described. However, the present invention is applicable to other vehicle lamps or a vehicle decorative device such as a rear finisher or a garnish. It can also be applied to equipment for use. As is apparent from the above description, in the respiratory structure of the vehicular apparatus according to the present invention, the air is forced to flow through the respiratory cylinder due to the negative pressure in the respiratory cylinder, and furthermore, into the respiratory cylinder. By increasing the flow rate of the inflowing air, the indoor breathing can be forcibly performed through the breathing hole. In addition, since the respiratory cylinder is provided integrally with the housing, another component such as a grommet is not required. As a result, the number of parts can be reduced and the cost can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial rear view showing an embodiment of a breathing structure of a vehicle device according to the present invention. FIG. 2 is a view taken in the direction of the arrow II in FIG. FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 1; [Description of Signs] 1 ... Housing, 10 ... Light room, 11 ... Light source bulb, 12
... socket, 13 ... breathing hole, 2 ... breathing cylinder, 20 ... upper opening, 21 ... lower opening, 22 ... waterproof wall.

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Claims (1)

(57) [Claim 1] A housing and a lens defining a chamber,
A breathing hole provided to communicate the chamber and the outside with the housing, and a breathing cylinder provided integrally with the housing in a direction perpendicular to the housing. force a and a breathing tube body,
At a point above the breathing hole in the breathing cylinder
Prevents water from entering the room through the breathing hole.
A waterproof wall provided between the inner surface of the breathing cylinder and the waterproof wall.
A breathing structure for a vehicle device, characterized in that a gap between the end and the end is narrowed .