Battery powered LED lamp
US7481554B2 · kind B2 · utility
22Cited by
14References
20Claims
0Family size
Inventors
Key dates
| Filing date | Sep 15, 2006 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Jan 24, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V21/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery powered LED lamp including an array of high-performance LEDs disposed in a lightweight directionally oriented shade. Converting electronics are provided which may include a step-down DC voltage switching regulator for converting a higher voltage of the battery power source to a lower voltage required to drive the LEDs at greater than 90% efficiency. The converting electronics may also include an LED current monitoring circuit for preventing thermal runaway of the LEDs and for reliably operating the LEDs near their maximum rating so to provide the maximum amount of brightness from the LED array and maximum battery life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.