Multiple-light discharge lamp lighting device
US7579785B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2005 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Aug 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/245
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a multiple-light discharge lamp lighting device that stabilizes and equalizes tube current of a plurality of discharge lamps without arranging a Ballast element to the secondary side of an inverter transformer with low costs. A multiple-light discharge lamp lighting device 10 according to the present invention includes inverter means 12 and a plurality of inverter transformers TR1 to TRn. Discharge lamps La1 to Lan are connected to secondary windings Ns1 to Nsn of the inverter transformers TR1 to TRn. Preferably, variable impedance elements Z1 to Zn, as variable inductance elements, are serially connected to primary windings Np1 to Npn of the plurality of inverter transformers TR1 to TRn. Accordingly, the tube current can be stabilized and equalized without using an element resistant to a high voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.