Title:
PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2018/042562
Kind Code:
A1
Abstract:
Provided is a projector capable of sufficiently cooling a prism. The projector includes: a heat dissipation part (304) provided outside a dustproof case (205); a heat receiving part (305) provided inside the dustproof case; and a heat pipe (306) for connecting the heat dissipation part and the heat receiving part. The dustproof case contains: a plurality of digital micromirror devices; a prism unit (308) that has a plurality of incident surfaces and a first and second emission surface and in which the light beams from each of the digital micromirror devices enters at each incident surface with the first emission surface emitting image light beams from the light beams entering via the incident surface and the second emission surface emitting undesired light beams; a light absorption member (501) for absorbing the undesired light beams; an internal circulation fan (303) for circulating cooling air inside the dustproof case; and first and second ducts (11, 12) for introducing the cooling air from the internal circulation fan into the prism unit.
Inventors:
KATO YUICHI (JP)
Application Number:
PCT/JP2016/075528
Publication Date:
March 08, 2018
Filing Date:
August 31, 2016
Export Citation:
Assignee:
NEC DISPLAY SOLUTIONS LTD (JP)
International Classes:
G03B21/16
Foreign References:
| JP2007502439A | 2007-02-08 | |||
| JP2009271467A | 2009-11-19 | |||
| JP2000206451A | 2000-07-28 | |||
| JP2016133609A | 2016-07-25 | |||
| JP2008026422A | 2008-02-07 | |||
| JP2002174795A | 2002-06-21 | |||
| JP2009163075A | 2009-07-23 |
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
Download PDF: