Multichip LED lighting device
US7322718B2 · kind B2 · utility
137Cited by
14References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2003 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Mar 31, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a module socket, a connecter and a connector are connected by wiring, and three LED modules are connected in parallel with respect to a constant voltage circuit unit via the wiring. Each module has a constant current circuit unit and an LED mounting unit. The constant current circuit unit includes one resistor and two transistors mounted on a surface of a sub-substrate on which a conductive land is formed. The sub-substrate is bonded to a main substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.