发明申请
- 专利标题: PROJECTOR
- 专利标题(中): 投影机
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申请号: US12922968申请日: 2009-03-12
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公开(公告)号: US20110037954A1公开(公告)日: 2011-02-17
- 发明人: Masaki Tsuchiya , Ryosuke Tsuihiji , Kazuhiro Arai , Hiroyuki Itsuki , Satoshi Imai , Makoto Maeda , Ken Mashitani , Toshiya Iinuma
- 申请人: Masaki Tsuchiya , Ryosuke Tsuihiji , Kazuhiro Arai , Hiroyuki Itsuki , Satoshi Imai , Makoto Maeda , Ken Mashitani , Toshiya Iinuma
- 申请人地址: JP Moriguchi-shi, Osaka
- 专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人: SANYO ELECTRIC CO., LTD.
- 当前专利权人地址: JP Moriguchi-shi, Osaka
- 优先权: JP2008-067402 20080317; JP2008-073462 20080321; JP2008-084799 20080327; JP2009-049511 20090303
- 国际申请: PCT/JP2009/001105 WO 20090312
- 主分类号: G03B21/16
- IPC分类号: G03B21/16
摘要:
There is disclosed a projector which supplies air cooled by a cooling unit to an optical element group, whereby the occurrence of dew condensation is prevented. The projector includes a cooling apparatus 11 disposed in a main body 1 and functioning as the cooling unit; a sealed or substantially sealed duct 30 through which cold air cooled by a cooler 18 of the cooling apparatus 11 is circulated and supplied to an optical element group 5 to cool the optical element group; an outside air introduction port 32 and an air discharge port 33 which function as a ventilation unit for introducing outside air into this duct 30 to discharge the air from the duct 30, dampers 34 and 35 for opening and closing these ports; and a controller C functioning as a control unit for controlling the dampers 34 and 35 to execute a ventilating operation in the duct 30.