| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure the flatness of the entire screen by correcting the flexure or the curling of a roll-up type screen, and distortion of the screen caused by a current of air in a room. Ž<P>SOLUTION: The projector includes: a short focus projection type video display apparatus 20 disposed on the top face side of the video equipment rack 29 and projects a video in front of the rack 29; a screen 34 that is projected a video projected from the projection type video display apparatus 20; a fan 43 that supplies or exhausts air to a space closed by the screen 34 and the rack 29. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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