Patent ID: 6203159
Filing Date: 2001-03-20
Classification: G03B

Abstract:
A projection display device comprising:a light source;a light modulator for modulating light from the light source, the light modulator being mounted on a mounting surface;a projection optical system for projecting the light modulated by the light modulator;a fan that supplies cooling air to the light modulator, the fan disposed on a side of the mounting surface opposite to a side where the light modulator is mounted, the cooling air being supplied by the fan in a spiral direction; andan air inlet that introduces cooling air to the light modulator at a position adjacent the mounting surface where the light modulator is mounted, the air inlet being comprised of first and second regions, the first region being formed opposite to the spiral direction of the cooling air supplied to the light modulator through the fan, the first region and the second region being on opposite sides of a line of intersection of the air inlet and a surface which includes a center of the light modulator and which crosses the light modulator and the mounting surface at right angles, the first region being wider than the second region.