Patent ID: 7896503

Claim:
An image projecting apparatus, comprising: a main body casing comprising a plurality of inlets and an outlet spaced from the plurality of inlets; a heat generating part that generates heat in an inner part of the main body casing, the heat generating part comprising a light source part comprising a lamp for emitting light, and a lamp supporting member for supporting the lamp; a ballast for driving the light source part; a wheel driving part for driving a color wheel separating the light emitted from the light source part into red, green and blue; a display element for using the light emitted from the light source part to generate an image signal; an element driving part for driving the display element; and a power supplying part for supplying power; a cooling duct coupled to the main body casing communicating between the plurality of inlets and the outlet, and comprising a channel guiding cooling air drawn in through the plurality of inlets to the heat generating part and accommodating the heat generating part therein; a channel dividing member dividing a channel of the outlet duct into a first outlet channel cooling the ballast and the wheel driving part and a second outlet channel cooling the light source part to separately guide the cooling air supplied from the cooling fan; and a cooling fan disposed in the cooling duct, wherein the cooling duct comprises an inlet duct disposed between the plurality of inlets and the cooling fan and an outlet duct disposed between the cooling fan and the outlet.