LED lamp with omnidirectional light distribution
US9303857B2 · kind B2 · utility
4Cited by
79References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2013 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Mar 27, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED based lamp has an optically transmissive enclosure connected to a base. The base may include a heat sink. A substrate is positioned in the enclosure and supports a plurality of LEDs where the periphery of the substrate has alternating recessed portions and protruding portions that define a plurality of laterally extending projections. One LED is located on each of the projections to increase the amount of down light generated by the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.