Multiple-light discharge lamp lighting device

Details Multiple-light discharge lamp lighting device Multiple-light discharge lamp lighting device

2005-12-16

2009-08-25

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

C315S256000, C315S277000

Reexamination Certificate

active

07579785

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 device10according to the present invention includes inverter means12and a plurality of inverter transformers TR1to TRn. Discharge lamps La1to Lanare connected to secondary windings Ns1to Nsn of the inverter transformers TR1to TRn. Preferably, variable impedance elements Z1to Zn, as variable inductance elements, are serially connected to primary windings Np1to Npn of the plurality of inverter transformers TR1to TRn. Accordingly, the tube current can be stabilized and equalized without using an element resistant to a high voltage.

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