Lighting device
US9273845B2 · kind B2 · utility
18Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2012 |
| Grant date | Mar 1, 2016 |
| Priority date | — |
| Expiry date | Jun 29, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an lighting device capable of reducing UGR (Unified Glare Rating) characterized by comprising the frame portion formed at the peripheral area in which the printed circuit board mounted with a light source and the light source are arranged, and the inserting portion into which the diffusing plate and the optical plate are inserted at the inside of the frame portion simultaneously. Particularly, an air gap can be formed on the closed adhered surface of the optical plate and the diffusing plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.