Patent ID: 8087788

Claim:
A projector comprising: a casing comprising a first sidewall, a front wall, a second sidewall, and a rear wall connected in sequence, the front wall defining a hole adjacent to the second sidewall and an air outlet adjacent to the first sidewall, at least one air inlet being defined on the first sidewall or the rear wall; an optical engine received in the casing and configured for projecting an image, the optical engine comprising a lens module substantially aligned with the hole defined by the front wall, a digital micromirror device (DMD), and an illuminator module arranged at a side of the lens module away from the second sidewall, the illuminator module comprising a housing having a side surface adjacent to the first sidewall with respect to the lens module and at least one light source installed on the side surface; and a heat dissipating module received in the casing and comprising a first heat sink attached to the at least one light source installed on the side surface, a blower for blowing air towards the first heat sink from one of the at least one air inlet, and an exhaust fan for pulling the air passed across the first heat sink out of the casing from the air outlet.