| 摘要 |
PROBLEM TO BE SOLVED: To preliminarily prevent the generation of the adhesion of fingerprints or dusts or cracks on the surface of a dome type cover. SOLUTION: The surface of a dome type cover 5 of a dome type video camera device 1 is covered with a protecting film 241 constituted of a non- dopant polyethylene film. At that time, the surface of the central part of the dome type cover 5 is covered with the central part of the protecting film 241, and the outer peripheral part of the protecting film 241 is superimposed from the opening edge of the dome type cover 5 to the inside.
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