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Light source module, lighting apparatus, and illumination device using the same

  • US 8,581,512 B2
  • Filed: 04/26/2011
  • Issued: 11/12/2013
  • Est. Priority Date: 04/26/2010
  • Status: Expired due to Fees
First Claim
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1. A lighting apparatus, comprising:

  • a light source module includinga light source unit including a plurality of light-emitting diodes (LEDs) electrically connected to each other;

    a characteristic setting unit for setting characteristic information on electrical characteristics of the LEDs;

    a first pin base having a first electrode and a second electrode; and

    a second pin base having a third electrode and a fourth electrode;

    wherein a direct current (DC) voltage supplied from a lighting apparatus is applied between the first electrode and the second electrode or between the third electrode and the fourth electrode, a constant voltage is supplied to an anode side of the LEDs of the light source unit, and the characteristic setting unit is connected between the first and second electrodes and/or between the third and fourth electrodes;

    a voltage conversion unit, which includes at least one switching device, for receiving, as a power, an external DC voltage or a rectified voltage obtained by rectifying an input alternating current (AC) voltage, and for converting the received voltage into a desired voltage by turning on and off the corresponding switching device thereby to supply the desired voltage to the first pin base of the light source module;

    a setting power source for supplying a power to the characteristic setting unit via the first or the second pin base; and

    a characteristic determination unit for determining the characteristic information,wherein the first and the second pin bases have a structure attachable to an illumination device for a fluorescent lamp, and the characteristic determination unit determines the characteristic information based on a signal generated at a pin base other than a pin base to which the voltage conversion unit is connected.

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