| 摘要 |
PROBLEM TO BE SOLVED: To provide a projector for securing stable quality of a projection image, and efficiently cooling a plurality of optical components. SOLUTION: The projector includes: a plurality of optical components disposed inside a closed structure having an annular air flow path; and a circulating fan which circulates air. The closed structure includes: an optical component housing which accommodates and arranges the plurality of optical components inside; a duct member which introduces air to the inside of the optical component housing, and introduces the air having flowed to the outside from the inside of the optical component housing again toward the inside of the optical component housing; and a heat exchanger 86 which includes a heat receiving side heat transfer member 861 which faces the inside of the closed structure, and a heat releasing side heat transfer member which faces the outside of the closed structure, and radiates the heat of the heat receiving side heat transfer member 861 to the outside of the closed structure. The heat exchanger 86 is disposed in parallel to the air flow path and includes two heat receiving areas 861B and 861RG independent each other corresponding to the respective optical components. COPYRIGHT: (C)2009,JPO&INPIT
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