Flat lighting device
US5558420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Nov 9, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0031
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flat lighting device designed to be free from accidental breakage of the leading-in wires for the luminous body comprised therein if they are subjected to vibration in use to consequently enhance the overall reliability of the flat lighting device. Such a flat lighting device comprises a panel-shaped transparent substrate, a light source holding unit fitted to an end face of the substrate and a tubular luminous body fitted to said light source holding unit and is characterized in that said light source holding unit is made of a conductive material and has a substantially U-shaped cross section such that it engages said end face at the open side thereof and that one of the leading-in wires of said luminous body is connected to said light source holding unit to form thereon a power feed section for the luminous body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.