| 摘要 |
PROBLEM TO BE SOLVED: To efficiently use air taken into the inside of a structural body and cleaned by passing through a filter by directly feeding the air taken into the inside of the structural body and cleaned by passing through the filter to a place requiring the air cleaned by passing through the filter for the purpose of cooling a projector and cleaning a lens. SOLUTION: An air introducing path is constituted of a reinforcing rib for reinforcing an outside case and the external wall of a case for protecting a projector main body inside the structural body in the structural body so as to obtain structure where the required amount of air cleaned by passing through the filter is fed to the place requiring it and structure where the structural restriction of the projector itself is eliminated. COPYRIGHT: (C)2004,JPO
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