Light unit with internal back-up power supply, communications and display
US8018161B2 · kind B2 · utility
11Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2008 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Jan 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/357
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light unit that includes an internal power supply that may be used in the event of an external power failure to provide power to the light unit. In one aspect, the present disclosure provides a lighting apparatus, comprising (a) a power input configured to receive external power from an external power source; (b) a solid state light element that is interconnected to the power input; and (c) a back-up power source that is interconnected to the solid state light element and the power input and that provides power to the solid state light element when the light element is not provided with power from the power input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.