| 摘要 |
PROBLEM TO BE SOLVED: To provide a dustproof device for optical electronic apparatus which is simple and is highly efficient. SOLUTION: A box for stowing the optical electronic apparatus is provided with a supply hole for clean air on one side and an air exit for the warm air used for cooling on another, and this air exit is utilized as an outlet for the light of the optical apparatus, with which the dustproof device having high heat radiation ability, in spite of its simplicity and maintaining the performance of the optical apparatus over a long period may be obtained.
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