LED LIGHTING DEVICE AND ILLUMINATION APPARATUS
First Claim
1. An LED lighting device comprising:
- a pair of input terminals to which AC voltage is input, the AC voltage being phase-controlled by a dimmer including a phase control element for phase-controlling AC voltage of an AC source, a timer circuit for determining timing for turning on the phase control element, and a filter circuit;
a damping circuit which includes a resistor inserted to a position, into which input current flows from the AC source via the dimmer in series, and a capacitor and an inductor which form a closed circuit together with the AC source and the dimmer, and suppresses high-frequency vibration generated in the dimmer when the phase control element of the dimmer is turned on; and
an LED lighting circuit including a rectifying circuit for rectifying AC voltage phase-controlled and input via the pair of input terminals, and a converter for converting DC output voltage of the rectifying circuit so that the voltage adapts to a load and lighting the LED.
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Accused Products
Abstract
The present invention provides a pair of input terminals to which AC voltage is input, the AC voltage being phase-controlled by a dimmer for phase-controlling AC voltage of an AC source; a damping circuit which has a resistor inserted to a position, into which input current flows from the AC source via the dimmer in series, and a capacitor and an inductor which form a closed circuit together with the AC source and the dimmer, and suppresses high-frequency vibration generated in the dimmer when a phase control element of the dimmer is turned on; and an LED lighting circuit which rectifies AC voltage phase-controlled and input via the pair of input terminals, converts DC output voltage, which is obtained by rectification, so that the voltage adapts to a load, and lights the LED.
87 Citations
3 Claims
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1. An LED lighting device comprising:
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a pair of input terminals to which AC voltage is input, the AC voltage being phase-controlled by a dimmer including a phase control element for phase-controlling AC voltage of an AC source, a timer circuit for determining timing for turning on the phase control element, and a filter circuit; a damping circuit which includes a resistor inserted to a position, into which input current flows from the AC source via the dimmer in series, and a capacitor and an inductor which form a closed circuit together with the AC source and the dimmer, and suppresses high-frequency vibration generated in the dimmer when the phase control element of the dimmer is turned on; and an LED lighting circuit including a rectifying circuit for rectifying AC voltage phase-controlled and input via the pair of input terminals, and a converter for converting DC output voltage of the rectifying circuit so that the voltage adapts to a load and lighting the LED. - View Dependent Claims (2, 3)
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Specification