发明申请
- 专利标题: Projection type display unit
- 专利标题(中): 投影型显示单元
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申请号: US10802028申请日: 2004-03-17
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公开(公告)号: US20050007788A1公开(公告)日: 2005-01-13
- 发明人: Takeshi Katayama , Hideharu Saito , Keiichiro Tokushige , Tatsuo Morita
- 申请人: Takeshi Katayama , Hideharu Saito , Keiichiro Tokushige , Tatsuo Morita
- 优先权: JP2003-192564 20030707
- 主分类号: G02F1/13
- IPC分类号: G02F1/13 ; F21V15/01 ; G02F1/1333 ; G03B21/00 ; G03B21/16
摘要:
Reduction of noise is achieved by devising an arrangement of heat generating parts such as a light bulb element, an electric power source, a light source, etc. and an arrangement of cooling fans. In cooling the light source, the electric power source and liquid crystal panels, a cooling wind path for the liquid crystal panels and the electric power source is made separate from and independent of a cooling wind path for the light source that generates much heat, a cooling air volume is optimized for the respective cooling wind paths, and noise accompanying the rotation of the cooling fans is reduced. Also, by arranging the cooling fans substantially centrally of the respective cooling wind paths, that volume of noise, which leaks from air intake ports and air exhaust port that are opened to a housing of a unit, is reduced.
公开/授权文献
- US07252416B2 Projection type display unit 公开/授权日:2007-08-07