LIGHTING CIRCUIT AND ILLUMINATION DEVICE
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Accused Products
Abstract
A lighting circuit according to embodiments includes: a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and a damping circuit configured to connect a damping resistance to the noise prevention circuit parallely only for a predetermined period from turning-on of the self-hold element, thereby preventing the self-hold element from being repeatedly turned on/off during a period in which the self-hold element is on under normal conditions, due to a transient during power supply.
20 Citations
35 Claims
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1-20. -20. (canceled)
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21. An illumination device comprising:
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a self-hold element connected in series to an AC power source that generates power for lighting an illumination load, together with the illumination load, the self-hold element being configured to control supply of the power provided by the AC power source to the illumination load by the self-hold element being turned on/off; a noise prevention circuit connected in parallel to the self-hold element; and an input terminal for inputting an on/off output of the self-hold element; a rectifier circuit including an AC input end connected to the input terminal; an LED lighting circuit including an input end connected to DC output ends of the rectifier circuit; and a damping resistor configured to be connected to the DC output ends of the rectifier circuit only for a predetermined period at the start of application of each half wave of a power source voltage to the input terminal. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification