Patent ID: 8057048

Claim:
A projector comprising: an optical arrangement including a light source configured to emit light, a filtering component arranged to filter the light emitted by the light source, a light modulation component arranged to modulate the light filtered by the filtering component to form an image, and a projection lens arranged to project the image formed by the light modulation component in a forward direction of the projector; and a cooling arrangement arranged relative to the optical arrangement to cool the optical arrangement, the cooling arrangement including a blower configured to blow cooling air in a rearward direction of the projector, an air duct arranged to guide the cooling air from the blower to the filtering component along an cooling air path, and a heat sink disposed in the cooling air path within the air duct, the heat sink having an attachment portion, the attachment portion being fixedly attached to the light modulation component to thermally contact with the light modulation component, the air duct having a front plate facing in the forward direction of the projector, the front plate including an inlet hole, an outlet hole and an attachment hole, the inlet hole communicating with a discharge opening of the blower to receive the cooling air blown from the blower in the rearward direction of the projector, the outlet hole opening towards the filtering component to discharge the cooling air towards the filtering component in the forward direction of the projector, the attachment portion of the heat sink being disposed through the attachment hole such that the light modulation component being forwardly disposed relative to the front plate of the air duct.