| 摘要 |
PROBLEM TO BE SOLVED: To prevent dusts or dirts from entering a space S between a lid body and a support frame. SOLUTION: The device includes a lid body 5 supported on a support frame 2 provided in a cabinet 100 by a pivot support 40. Between the support frame 2 and the lid body 5 in the vicinity of the pivot support 40, a space S opened to the side with the lid body 5 closed is formed. Inside the support frame 2, a covering piece 9 for covering the space S is provided close to the lid body 5, the covering piece 9 is arranged on the rotary transfer path of the tip of the lid body 5 so as to be elastically deformed, and pressed to the tip of the lid body 5 to be deformed in the open state of the lid body 5.
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