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LIGHTING DEVICE AND LUMINAIRE

  • US 20120187864A1
  • Filed: 01/20/2012
  • Published: 07/26/2012
  • Est. Priority Date: 01/21/2011
  • Status: Abandoned Application
First Claim
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1. A lighting device comprising:

  • a lighting circuit that includes a direct-current power supply, a DC-DC converter having an input end connected to the direct-current power supply, and an output capacitor connected in parallel to an output end of the DC-DC converter, and lights an illumination lamp connected to the output end of the DC-DC converter by constant-current control, whereina capacitance of the output capacitor is set to a value, and a peak value of a pulse-like current flowing when the illumination lamp is instantaneously detached from and attached to the output end of the DC-DC converter is one or more and four or less times a load current of the illumination lamp.

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