High power LED lamp structure using phase change cooling enhancements for LED lighting products
US6452217B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jun 30, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/01322
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
High power LED lamps for use in lighting products, such as flashlights and the like, are formed of a plurality of LED die arranged in a multi-dimensional array, each of the LED die having a gallium nitride semiconductor layer and phosphor material for creation of white light. Each of the LED die emits light from the top, bottom and sides of the die and is arranged on the multi-dimensional array so that the emitted light from each of the die does not contact another die. A reflector gathers and focuses the light from each of the die to approximate a high power LED lamp. A thermally conducting, electrically insulating material or phase change material is incorporated into the lamp to act as a source of heat removal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.