| 摘要 |
PROBLEM TO BE SOLVED: To injection mold a housing of a lamp body good in moldability and to improve the yield. SOLUTION: The housing 4 constituting a lamp 1 is composed of a light source accommodation casing part 4a, a coupler part 4b which is bent rectangularly to a cylinder axis from one cylinder end edge part of the light source accommodation casing part 4a and connected to an external connector, and a flange part 4c which extends in the outer diameter direction from the other cylinder end edge part of the light source accommodation casing part 4a. When the housing 4 is injection-molded, a resin material is injected from a second gate 18 which is positioned in the opposite direction to the projection direction of the coupler part 4b of a flange part 4c forming part. COPYRIGHT: (C)2008,JPO&INPIT
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