Light emitting diode power supply apparatus
US9258856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2013 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Jan 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a light emitting diode power supply apparatus capable of limiting a rise in a voltage level of a power supplied to a light emitting diode even in the case in which driving of the light emitting diode is stopped for a long period of time. The light emitting diode power supply apparatus includes: a power supply unit supplying a driving power set under a control to a light emitting diode; and a controlling unit selecting one of a detection voltage obtained by detecting a current flowing to the light emitting diode and a voltage provided according to an operation state of the light emitting diode to control a power supply operation of the power supply unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.