In order to prevent dust from sticking to the LCD panel, to prevent the LCD panel from being heated and to suitably adjust the position of the LCD panel, a duct is provided between cooling means for a light source and cooling means for a LCD panel to send cooling air from the LCD panel side to the light...http://www.google.de/patents/US6231191?utm_source=gb-gplus-sharePatent US6231191 - Image display mechanism and image display device
