Title:
PROJECTION-TYPE VIDEO DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/134872
Kind Code:
A1
Abstract:
A projection-type video display device that more suitably cools light-emitting diodes of a plurality of colors. A projection-type video display device 100 that uses white light to project video. The projection-type video display device 100 has an LED 111, an LED 112, an LED 113, a cooling unit 114, a cooling unit 115, and a cooling unit 116. LED 111-LED 113 generate white light. Cooling unit 114 cools LED 111. Cooling unit 115 cools LED 112. Cooling unit 116 cools LED 113. LED 111 is the light source that has the largest variation in temperature characteristics. Cooling unit 114, which cools LED 111, is arranged to be cooled more preferentially than cooling units 115, 116.
Inventors:
KATAYAMA TAKESHI (JP)
SHIKITA KAZUO (JP)
SHIRAISHI AKIHIRO (JP)
INO TATSUYA (JP)
INOUE HIROYUKI (JP)
SHIKITA KAZUO (JP)
SHIRAISHI AKIHIRO (JP)
INO TATSUYA (JP)
INOUE HIROYUKI (JP)
Application Number:
PCT/JP2016/081628
Publication Date:
August 10, 2017
Filing Date:
October 25, 2016
Export Citation:
Assignee:
HITACHI MAXELL (JP)
International Classes:
G03B21/16; G03B21/00; H04N9/31
Foreign References:
| US20140092368A1 | 2014-04-03 | |||
| US20140085612A1 | 2014-03-27 | |||
| JP5804522B2 | 2015-11-04 | |||
| JP2012247727A | 2012-12-13 |
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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