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Vehicle lamp and method of manufacturing vehicle lamp

A manufacturing method and lamp technology, applied to road vehicles, household appliances, vehicle parts, etc., can solve problems such as poor joints, difficulty in obtaining designed shapes, and inability to perform welding, so as to prevent random refraction of welding light and prevent appearance deterioration , the effect of preventing shrinkage

Inactive Publication Date: 2008-01-02
KOITO MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in optical welding such as laser welding, if the welded part of the transparent cover and the welded part of the case cannot be reliably contacted, joint failure will occur.
[0008] However, the transparent cover and housing of the vehicle lamp are resin molded products, and it is difficult to obtain the designed shape due to the influence of warping and bending after molding.
Therefore, it is difficult to make reliable contact between the transparent cover and the casing
Moreover, if the transparent cover and the housing cannot be reliably contacted, the heat given to the housing by irradiation of light such as laser light cannot be transferred to the transparent cover, and welding cannot be performed.

Method used

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  • Vehicle lamp and method of manufacturing vehicle lamp
  • Vehicle lamp and method of manufacturing vehicle lamp
  • Vehicle lamp and method of manufacturing vehicle lamp

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Embodiment Construction

[0040] Next, the best method for carrying out the vehicle lamp and the manufacturing method of the vehicle lamp according to the present invention will be described with reference to the drawings.

[0041] FIG. 1 shows a schematic front view of the vehicle lamp according to the present invention, and FIG. 2 shows a schematic longitudinal sectional view of the vehicle lamp according to the present invention.

[0042] The vehicle lamp 1 is configured such that the front opening of a container-shaped case 2 with an open front is covered by a transparent cover 3 , and a light source 5 is arranged in a lamp chamber 4 defined by the case 2 and the transparent cover 3 .

[0043] On the rear of the peripheral portion of the transparent cover 3, a welding surface 31 is formed on the entire circumference, and the welding surface 31 is welded to the welding surface 21 formed on the peripheral portion of the front opening of the case 2 by beam welding. That is, the welding of welding ligh...

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Abstract

A vehicle lamp includes a housing and a transparent cover, which is joined to the housing by a light ray welding. A front face of the transparent cover is curved and a rear face of the transparent cover includes a welding face portion formed along a circumferential portion thereof. In at least one section of the transparent cover, respective end portions of the front face corresponding to the welding face portion are inclined in different directions, and an angle of the welding face portion with respect to a reference line, which passes through the transparent cover and forms equal angles with respect to the respective end portions of the front face, is closer to a right angle than the angle of each of the end portions of the front face with respect to the reference line.

Description

technical field [0001] The present invention relates to a new vehicle lamp and a manufacturing method of the vehicle lamp. More specifically, it relates to a technique for reliably joining a case for accommodating a light source and the like to a transparent cover that closes the front of the case. Background technique [0002] When manufacturing a lamp for a vehicle such as a lamp for an automobile, a process of attaching a transparent cover generally called a lens so that the front opening thereof covers the housing is required. [0003] At present, in the installation between the transparent cover and the housing, the following method is usually adopted: a sealing foot is protruded from the peripheral portion of the transparent cover, a groove for receiving the above-mentioned sealing foot is formed on the housing, and the sealing material or adhesive material is used to seal the sealing foot. The sealing foot of the transparent cover is incorporated into the groove of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/10F21V3/02F21V5/04F21V17/10F21W101/02F21W107/10
CPCF21S48/255B29K2033/12B29C65/1635B29C66/301B29C66/534B29C65/1612B29C65/1606B29L2031/747B29C66/542B29C66/131B29C66/24244B29C66/81423B29C66/8322B29C66/7392B29K2995/0027B29C66/73365B29C66/71B29C66/723F21S43/51B29L2031/30B60Q1/02F21V3/00
Inventor 山崎一广铃木三千彦安田亮介大溪治夫
Owner KOITO MFG CO LTD
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