Power source unit for LED lamps, and LED lamp system
US9066407B2 · kind B2 · utility
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12References
12Claims
0Family size
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Key dates
| Filing date | Jul 22, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Aug 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/395
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dedicated power source for LED lamps capable of reliably detecting attachment of an LED lamp is provided.A dedicated power source has a DC power source portion, and includes a lighting circuit which receives power supplied from the DC power source portion and light-controls an LED lamp including an LED element and a detection resistor connected in parallel to the LED element and an attachment detecting portion for detecting attachment of the LED lamp based on a voltage level changing in accordance with attachment/detachment of the detection resistor by attachment/detachment of the LED lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.