Title:
LIQUID CRYSTAL PROJECTOR
Document Type and Number:
Japanese Patent JP2500741
Kind Code:
B2
Abstract:
PURPOSE: To excellently cool a liquid crystal pannel, to prevent the reduction in contrast of the liquid crystal pannel due to the temperature rise and to excellently project an image by passing air flow by a cooling fan through the gap between a display device and a first wall part and the gap between the display device and a second wall part.
CONSTITUTION: The cooling air introduced from an intake hole 12a cools a light source device 50, and the cooling air introduced from the intake hole 12b lowers a temperature in a case passing between the light source device 50 and the display device 30 and cools a Fresnel lens 22 for correcting an optical flux. Further, the cooling air introduced from the intake hole 12c cools the display device 30 from the outside passing through between the light source device 50 and the display device 30 and cools a cooling liquid 36 in a display pannel refrigerator 31 by exchanging heat with a heat pipe 37, and the cooling air intorduced from the intake hole 12d is introduced from an air hole 13 between a wind limiting wall 11 and a display unit 40, and cools the display unit 40 from the front surface side and a condensate Fresnel lens 23.
Inventors:
OGAWA MASAHIRO
SHIMAZAKI TATSUO
SHIMAZAKI TATSUO
Application Number:
JP8450093A
Publication Date:
May 29, 1996
Filing Date:
April 12, 1993
Export Citation:
Assignee:
CASIO COMPUTER CO LTD
International Classes:
G02F1/13; G02F1/1333; G03B21/00; G03B21/16; G09F9/00; H05K7/20; (IPC1-7): G02F1/13; G02F1/1333; G03B21/00; G03B21/16
Domestic Patent References:
| JP5885736A | ||||
| JP6348532A | ||||
| JP61140345U |
Attorney, Agent or Firm:
Takehiko Suzue