Power-saving LED lighting apparatus
US8400082B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2011 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Aug 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a power-saving LED lighting apparatus in which the full-wave rectified wave form of the commercial power is used as the driving voltage. The LED lighting apparatus includes a rectifier circuit part which rectifies commercial power and outputs a rectified voltage; a plurality of LED arrays having a plurality of LEDs connected in series and the rectified voltage of the rectifier circuit part is supplied to an anode of the uppermost LED array; a driving part in which one terminal of each switching device for supplying or blocking a driving current to the plurality of LED arrays is connected to each anode of the plurality of LED arrays, and the other terminal thereof is connected to a cathode of the lowermost LED array; and a control part which outputs a control signal for turning on and off the switching devices according to a level of the rectified voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.