Title:
PROJECTION DEVICE
Document Type and Number:
Japanese Patent JP2022159364
Kind Code:
A
Abstract:
To suitably cool a projection device with one cooling fan.SOLUTION: A projection device 10 includes an optical device 60, a control circuit board 300 disposed on an upper side of the optical device 60, a cooling fan 280 disposed near a suction part 264, which is a rear surface suction part of a case 250 on the opposite side of a projecting direction, and having an upper surface suction port 280a that sucks from an upper surface and a lower surface suction port 280b that sucks from a lower surface, and heat sinks (first heat sink 281 and second heat sink 282) provided according to a discharge port 280c of the cooling fan 280 and connected to the optical device 60. The flow channel resistance on the lower surface suction port 280b side is lower than the flow channel resistance on the upper surface suction port 280a side.SELECTED DRAWING: Figure 6
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Inventors:
Kohei Miura
Tomoyuki Ueda
Takushi Fujikura
Tomoyuki Ueda
Takushi Fujikura
Application Number:
JP2022123818A
Publication Date:
October 17, 2022
Filing Date:
August 03, 2022
Export Citation:
Assignee:
CASIO COMPUTER CO.,LTD.
International Classes:
G03B21/16; G03B21/00; H05K7/20
Attorney, Agent or Firm:
Patent Attorney Corporation Cosmo International Patent Office
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