Sanyo Electric Co., Ltd.

Naoyuki Uchiyama

Shoji Okazaki

Taichi Yoshimura

Takaharu Adachi

Fumihiko Hamada

Hiromitsu Gishi

Mitsuhiro Masuda

Michihiro Kurokawa

Masaki Tsuchiya

There is disclosed a projector capable of efficiently cooling an optical element while decreasing the generation of noise as much as possible. A projector P includes a main bodyprovided with a light source, an optical element(liquid crystal panelsand, polarization platesA,B and a prism) which processes (modulates) light emitted from this light sourcein accordance with image information and a projection lenswhich projects a modulated projection optical image onto a screen, and further includes a cooling apparatusin which a compressor, a radiator, a capillary tube(a pressure reducing unit) and an evaporatorprovided in the main bodyconstitute a refrigerant circuit, and air subjected to heat exchange between the air and the evaporatoris supplied to the liquid crystal panelsandto cool the panels.

Projector

A projector device adapted to project an image-forming beam using a lamp as a light source. The lamp is installed within a rectangular parallelepipedal housing, and an exhaust fan is disposed to the rear of the lamp. The top wall of the housing surrounding the lamp is given an opening pattern asymmetric about the optical axis of the lamp by forming an air inlet opening in a position deviated from the optical axis toward a direction orthogonal to the axis for producing a swirling air current within the housing by operating the exhaust fan. The lamp can be effectively cooled with reduced quantities of air.

Projector device

A projector device adapted to project an image-forming beam using a lamp as a light source. The lamp is installed within a rectangular parallelepipedal housing, and an exhaust fan is disposed to the rear of the lamp. The top wall of the housing surrounding the lamp is given an opening pattern asymmetric about the optical axis of the lamp by forming an air inlet opening in a position deviated from the optical axis is toward a direction orthogonal to the axis for producing a swirling air current within the housing by operating the exhaust fan. The lamp can be effectively cooled with reduced quantities of air.

Growing community of inventors

Gunma, Japan

Naoyuki Uchiyama