Display apparatus for vehicle with means to prevent solar heating thereof
US4886328A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 1986 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | May 27, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0187
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display apparatus for a vehicle of the type wherein a display image of a display device located near a focus of an optical system is projected on a front glass of the vehicle so that a virtual image of the display image may be focused at a position forwardly of the front glass. In the display apparatus, when external light entering the optical system has an intensity higher than a predetermined level, a light intercepting means prevents the external light from being received by the display device, thereby preventing thermal destruction of the display device which may possibly be caused by heat given to the display device by intense external light such as the sunlight which is condensed by the optical system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.