Lighting apparatus using light emitting diode
US8540397B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2008 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Oct 30, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention includes a lamp housing member having a circular upper plate and a side portion formed at the outer circumference of the upper plate, first light emitting diode modules that are provided on a lower surface of the upper plate and are supplied with power to emit light, and second light emitting diode modules that are mounted on the inner surface of the side portion and are supplied with power to emit light. According to the invention, it is possible to increase a light distribution area, achieve illumination with high brightness, and improve flexibility in the road lighting design. In addition, it is possible to easily ensure a cut-off-angle at which pedestrians or drivers cannot directly view the second light emitting diode modules by adjusting the inclination angle of the side portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.