| 摘要 |
PROBLEM TO BE SOLVED: To ensure the waterproofness of a casing even when a moisture or the like infiltrates into a connector by boring a vent hole at the front end of a cylindrical projecting section formed in the connector. SOLUTION: A circuit board 5 is housed in the casing 1, and the waterproof structure type connector 7 is installed. The cylindrical projecting section 10 projected from a base 8D is formed in the socket hole 8C of a connector case 8, and the vent hole 11 ventilating the inside of the casing 1 is formed at the front end of the projecting section 10. Accordingly, the waterproofness of the connector 7 is lowered by a deterioration with time or the like, water droplets W can be attached on the root side or the like of the projecting section 10 even when a small amount of the water droplet W infiltrates in the socket hole 8C, and an infiltration into the casing 1 through the vent hole 11 of the water droplets W can be prevented. COPYRIGHT: (C)2005,JPO&NCIPI
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