Emergency lighting device
US9107269B2 · kind B2 · utility
12Cited by
39References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2013 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Mar 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/1965
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An emergency lighting device includes a backup power supply for illuminating a light during a power loss. The lighting device includes a transmitter, which transmits a signal to a receiver during a power outage. When the receiver receives the signal, the source of power switches from the primary power source, e.g., AC utility power, to a backup power source, e.g., DC battery power. The lighting device may include an LED lamp in which AC-LEDs are selectively illuminated when primary power source is delivered and DC-LEDs which are selectively illuminated during a power outage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.