| 摘要 |
PROBLEM TO BE SOLVED: To stably fix a dust-proof glass by a resin hook formed integrally with a housing made of resin, in which glass is contained. SOLUTION: A 1st angle part 32 formed to project toward the dust-proof glass 22 and pressing and fixing the glass 22 on a sidewall surface 35 of the housing 11, and a 2nd angle part 33 projecting toward the glass 22 in a direction more than the 1st angle part 32 on farther edge side than the 1st angle part 32 and preventing the glass 22 from falling are formed at the tip part of a resin hook 25.
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