JPH0433150Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automobile lamp, and particularly to an automobile lamp that can prevent the generation of wind noise when the automobile is running at high speed.

[Conventional technology]

For example, a conventional headlamp a mounted on the front end of a front body of an automobile is, as shown in FIG. It consists of a lamp unit 5 attached to the housing 3 and equipped with a lens 4 at the front end,
A lens 4 is held in front of the front opening 6 of the lamp housing 3, and the tip edge 9 of the front opening end 8 of the lamp housing 3 is placed behind and facing the peripheral edge 7 of the lamp housing 3 at a distance. 10 is a tip edge 9 inside the front opening end 8 of the lamp housing 3.
This inner wall 10 and the distal end edge 9 form a mounting groove 11. Reference numeral 12 denotes a protruding wall formed protrudingly from the back surface 13 of the peripheral edge 7 of the lens 4, and this protruding wall 12 is fitted into the mounting groove 11 of the lamp housing 3 via a sealing member 14 having a U-shaped cross section. . The headlamp a having the above structure holds the lens 4 on substantially the same plane as the front surface 15 of the front body 1, and has a gap 18 of a predetermined size between the circumferential outer surface 16 and the front end inner surface 17 of the front body 1. It is attached to the front body 1 in the formed state.

Incidentally, when a car is running at high speed, wind flows into the gap 18 between the front body 1 and the headlamp a. , and the front open end 8 of the lamp housing 3
Since the outer corner portion 20 of the leading edge of the lens 4 is formed into a right-angled surface, the traveling air flows through the front corner portion 19 of the lens 4.
Alternatively, it collides with the outer corner portion 20 of the leading edge of the lamp housing 3. As a result, the wind flowing into the gap 18 flows irregularly in the front, rear, right and left directions, creating turbulence and generating wind noise.

Therefore, conventionally, a sealing member 21 is installed in the gap 18 between the front body 1 and the headlamp a as shown in FIG. This prevents wind noise from occurring.

Other conventional means for preventing the generation of wind noise during high-speed driving is disclosed in Japanese Utility Model Application Publication No. 58-25782. In this known technique, a sealing member is installed between the upper surface of an automobile lamp and the inner surface of the front end of the hood.

[The problem that the idea attempts to solve]

According to conventional headlamps for automobiles, a seal is installed in the gap 18 between the front end circumferential outer surface 16 of the headlamp a and the front end inner surface 17 of the front body 1 in order to prevent wind noise from occurring during high-speed driving. The sealing member 21 must be attached, which increases the number of parts and increases the cost.
There was a problem that it took a lot of effort to put it on, and the workability was extremely poor. A similar problem occurred in the known technique described in Japanese Utility Model Application Publication No. 58-25782.

[Means to solve the problem]

The present invention was proposed in view of the above-mentioned problems, and is an automobile lamp mounted on the front end of a front body with a gap formed between the front end inner surface of the body and the lamp. a lamp housing disposed at the front end of the front body and having an open front; and a lens attached to the lamp housing and held at the front end of the front opening of the lamp housing. and a lamp unit, in which the leading edge of the front opening end of the lamp housing is placed facing and spaced behind the periphery of the lens; A curved surface with a predetermined curvature is formed on the tip edge of the front opening end of the lamp housing.

[Function] Even if the wind flows into the gap between the front body and the lamp when the car is running at high speed, the wind blows around the periphery of the lens of the lamp unit and the tip edge of the front opening of the lamp housing. Since the wind flows along the curved surface formed in the gap, the wind flows in a laminar state within the gap. Therefore, turbulence does not occur within the gap, and wind noise can be reliably prevented from occurring.

〔Example〕

An embodiment of the headlamp b according to the present invention will be described below with reference to FIG.
Components that are the same as those shown in FIG. 2 are denoted by the same reference numerals and explanations will be omitted.

A feature of the present invention is that a curved surface 31 of a predetermined curvature is formed at the front corner portion 19 of the peripheral edge 7 of the lens 4 constituting the lamp unit 5, and a curved surface 31 of a predetermined curvature is formed at the front edge outer corner portion 2 of the front opening end 8 of the lamp housing 3.
0 is slightly bulged outward to form a bulged portion 33 having a curved surface 32 of a predetermined curvature on the outer surface, and the bulged portion 33 is opposed to the back surface 13 of the peripheral edge 7 of the lens 4 at a predetermined distance. That's what happened.

When the automobile is running at high speed, the wind flows into the gap 18 between the front body 1 and the headlamp b. Since the traveling wind flows along the curved surfaces 31 and 32 formed on the front edge 9 of the front opening end 8, respectively, the traveling wind flows in the gap 18 in a laminar flow state. Therefore, no turbulent flow occurs within the gap 18, and wind noise can be reliably prevented from occurring.

In the above embodiment, the case of a headlamp has been described, but the present invention is not limited thereto, and can be applied to all automotive lamps installed at the front end of the front body of an automobile.

[Effect of idea]

According to the present invention, even if the wind flows into the gap between the front body and the lamp when the car is running at high speed, the wind will flow to the periphery of the lens of the lamp unit and the front opening of the lamp housing. Because it flows along the curved surface formed on the tip edge of each,
The wind flows through the gap in a laminar flow state. Therefore, no turbulent flow occurs within the gap, and wind noise can be reliably prevented from occurring. Moreover, it has a simple structure and is easy to manufacture, reducing costs, and there is no need to install a sealing member as in the past, so work efficiency can be greatly improved. .

[Brief explanation of drawings]

FIG. 1 is an explanatory sectional view of a main part showing an embodiment of an automobile lamp according to the present invention. FIG. 2 is a cross-sectional explanatory view showing the main parts of a conventional headlamp, and FIG. 3 is a cross-sectional view showing the main parts of a conventional wind noise generation prevention means. DESCRIPTION OF SYMBOLS 1...Front body, 2...Front end, 3...Lamp housing, 4...Lens, 5...Lamp unit, 6...Front end opening, 7...Periphery, 8...
Front opening end, 9... tip edge, 31, 32... curved surface.

Claims (1)

[Claims for Utility Model Registration] An automobile lamp mounted on the front end of a front body with a gap formed between the front end inner surface of the body, the lamp being mounted on the front end of the front body. The lamp unit comprises a lamp housing which is arranged and has an open front side, and a lamp unit which is attached to the lamp housing and is provided with a lens held at the front end of the lamp housing in front of the front opening of the lamp housing. In a lamp unit in which the leading edges of the front opening end of the lamp housing are arranged opposite to each other with a distance behind the periphery of the lens, An automobile lamp characterized in that a curved surface with a predetermined curvature is formed on each tip edge.