LED battery backup lamp
US11310880B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2018 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Apr 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED lamp includes a housing having an endcap, an optical portion, and components located within the housing, the components including a plurality of LED segments and a reconfiguration circuit configured to route LED segment electrical connections from a serial to a parallel mode, an LED driver circuit, a line sense circuit to detect presence/absence of AC line voltage, and a rechargeable battery connected to a boost driver circuit to provide electrical power to the LED light source in the absence of line voltage, and a control processor to monitor and control one or more of the plurality of components. The LED lamp configured to illuminate all LED segments irrespective of the presence or absence of the line voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.