Projector provided with cooling mechanism
US6793343B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2003 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Jan 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light source is disposed at an end of an optical unit (4) formed approximately in planarly-viewed L-shape and an axial-flow fan (6A) is disposed so that suction surface thereof opposes the light source, where an exhaust duct (6B) connected with the axial-flow fan (6A) and extending toward a front side of a projector (1) along a side of a lower case is disposed on the exhaust side of the axial-flow fan (6A), so that the axial-flow fan (6A) is spaced apart from an exhaust hole formed on the front side of the projector (1) and the exhaust flow from the axial-flow fan (6A) becomes parallel to an image projecting direction of a projection lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.