Lighting apparatus including primary and secondary illumination sources and circuit controlling the same
US10309596B2 · kind B2 · utility
2Cited by
9References
2Claims
0Family size
Inventor
Key dates
| Filing date | Sep 1, 2014 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Sep 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting apparatus is provided that is able to illuminate despite the loss of a primary source of power. In implementation, a controller is provided for determining if a loss of normal power has occurred so that a first source of illumination cannot function. In that case, a second power source is provided to supply energy to a second source of illumination. Further, the first and second sources of illumination may use the same switch such that a users inconvenience is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.