LED lamp
US8109654B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Oct 16, 2009 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Oct 1, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED lamp includes a heat sink including a supporting plate, a light-reflecting member mounted on a bottom face of the supporting plate, and a plurality of LEDs disposed on the bottom face of the supporting plate. The light-reflecting member defines a plurality of concave portions recessed inwardly from an outer face thereof. The LEDs include a plurality of first LEDs arranged within the light-reflecting member and a plurality of second LEDs arranged outside the light-reflecting member. The second LEDs are located corresponding to the concave portions, respectively, whereby light generated by the second LEDs can be reflected by the light-reflecting member to illuminate a large area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.