发明名称 Image projection apparatus
摘要 An image projection apparatus is disclosed which is capable of reducing noise when airflows from plural flow paths are taken in into a fan and exhausted therefrom. The apparatus comprises a first flow path (B) through which a first airflow (W1, W2) for cooling a light source (1) passes, a second flow path (A) through which a second airflow (W4, W5) for cooling constituent parts (8, 10) other than the light source passes, a fan (18) which exhausts air introduced from the first and second flow paths to the outside of the apparatus, a third flow path (27b) which introduces a third airflow (W6) to an exhaust area between the light source and the fan in the first flow path, and a light-shielding member (19, 20) which is provided in the exhaust area and shields the light from the light source.
申请公布号 EP1816873(A1) 申请公布日期 2007.08.08
申请号 EP20070002230 申请日期 2007.02.01
申请人 CANON KABUSHIKI KAISHA 发明人 NODA, TOSHIYUKI;KATSUMATA, SHIN-ICHI
分类号 H04N9/31;G03B21/16;H04N5/74 主分类号 H04N9/31
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