LIGHTING SYSTEM WITH REDUCED STANDBY POWER
First Claim
1. A lighting system with reduced standby power, the lighting system comprising:
- a main control unit to control a lighting device according to a control signal;
a driver connected to the main control unit to supply the control signal to the lighting device; and
an AC-DC converting circuit to supply power to the driver,wherein the main control unit comprises;
a lighting control unit to control the lighting device;
a standby power supply unit to supply standby power; and
a power control unit to maintain a voltage or a current of the standby power supply unit in a predetermined level.
1 Assignment
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Accused Products
Abstract
A lighting system with reduced standby power according to the embodiment includes a main control unit to control a lighting device; a driver to supply the control signal to the lighting device; and an AC-DC converting circuit to supply power to the driver. A method of reducing standby power according to the embodiment includes charging a standby power supply unit with power in a normal mode; checking whether a lighting off signal is transmitted and switching off a lighting, and simultaneously, shutting off the power supplied from the AC-DC converting circuit when the lighting off signal is transmitted; changing an operation mode of a lighting device from a normal mode to a standby mode; checking whether a voltage of the standby power supply unit is less than a predetermined level; and charging the standby power supply unit when the voltage is less than the predetermined level.
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Citations
15 Claims
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1. A lighting system with reduced standby power, the lighting system comprising:
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a main control unit to control a lighting device according to a control signal; a driver connected to the main control unit to supply the control signal to the lighting device; and an AC-DC converting circuit to supply power to the driver, wherein the main control unit comprises; a lighting control unit to control the lighting device; a standby power supply unit to supply standby power; and a power control unit to maintain a voltage or a current of the standby power supply unit in a predetermined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of reducing standby power, the method comprising:
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charging a standby power supply unit with power supplied from an AC-DC converting circuit in a normal mode; checking whether a lighting off signal is transmitted from an outside and switching off a lighting, and simultaneously, shutting off the power supplied from the AC-DC converting circuit when the lighting off signal is transmitted; changing an operation mode of a lighting device from a normal mode to a standby mode; checking whether a voltage of the standby power supply unit is less than a predetermined level by sensing the voltage of the standby power supply unit; and charging the standby power supply unit when the voltage of the standby power supply unit is less than the predetermined level. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification