LED-based christmas light string assembly with parallel-wired lighting units
US8007129B2 · kind B2 · utility
46Cited by
4References
2Claims
0Family size
Inventor
Key dates
| Filing date | May 22, 2009 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Oct 9, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED light string assembly has a plug for providing a low DC voltage, an extension socket, a light string connected between the plug and the extension socket. The light string has multiple LED Christmas bulbs connected in parallel. Each LED Christmas bulb includes an LED and a resistor connected in series. Even one of the LED Christmas bulb burns out, all the remaining LED Christmas bulb of the light string will not be affected and still can be normally turned on as required to generate light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.