Patent ID: 8469521

Claim:
A projector comprising: a plurality of reflection type light modulation devices which modulates a corresponding color light of plural color lights; a color synthesizing optical device which has a plurality of light entrance side end surfaces receiving the corresponding color lights modulated by the plural reflection type light modulation devices and a crossing end surface crossing the light entrance side end surfaces to combine the received color lights; a heat sink which has a base attached to the corresponding reflection type light modulation device, and a fin protrusion from the base and extending in a direction crossing the crossing end surface; and a duct member disposed at a position opposed to the crossing end surface to supply introduced air toward the heat sink, wherein the duct member includes a first outlet section disposed opposed to the fin such that the introduced air can be supplied toward the base through the first outlet section, and a second outlet section through which the introduced air is supplied in the extending direction of the fin.