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Title:
PROJECTION-TYPE IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/021463
Kind Code:
A1
Abstract:
This projection-type image display device is provided with: a light source part (10) that includes a discharge lamp for emitting lamp light; a cooling fan (50) that supplies cooling air for cooling the discharge lamp; and a lamp duct (60) that guides the cooling air inside the light source part. The lamp duct (60) has a first air path (61) through which the cooling air is guided out above the discharge lamp inside the light source part (10) when the lamp duct (60) is in a first position, a second air path (62) through which the cooling air is guided out above the discharge lamp when the lamp duct (60) is in a second position which is upside down of the first position, and an air path switching part (65) that performs switching between the air paths for introducing the cooling air. The air path switching part (65) introduces the cooling air through the first air path (61) by blocking an inlet (62a) of the second air path in said first position, and introduces the cooling air through the second air path (62) by blocking an inlet (61a) of the first air path in said second position.

Inventors:
YAMADA HIDEMI (JP)
INUI SHINRO (JP)
INOUE HIROYUKI (JP)
ISHIJIMA EIKI (JP)
Application Number:
JP2017/027460
Publication Date:
January 31, 2019
Filing Date:
July 28, 2017
Export Citation:
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Assignee:
MAXELL LTD (JP)
International Classes:
G03B21/16; G03B21/00; G03B21/14
Domestic Patent References:
WO2011111186A12011-09-15
Foreign References:
JP2013015654A2013-01-24
JP2008262153A2008-10-30
JP2014191015A2014-10-06
JP2016167044A2016-09-15
JP2010212115A2010-09-24
JPH11111046A1999-04-23
JP2011209382A2011-10-20
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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