Patent ID: 7057351
Filing Date: 2006-06-06
Classification: H02J,H05B,Y02B

Abstract:
1. An emergency lighting function illumination appliance comprised of: an illumination appliance; a mains power circuit that receives mains power and processes the said mains power appropriately to drive the said illumination appliance; a backup circuit that is a backup power source having a battery and capable of a suitable output to drive the said illumination appliance; a controller shunted between the said illumination appliance and both the said mains power circuit and said backup circuit, the said controller comprised of a control unit and a selector unit, the features of which are: the said control unit has a switch and when the said switch is toggled, a voltage or current pulse signal is generated, the said control unit receives the pulse signal and outputs a control signal that has a different level than level before toggling, the said signal is connected to a controlled switch responsible for terminating or initiating the said mains power unit, and the said selector unit determines whether the circuit of the said illumination appliance is connected to either the said backup circuit or the said mains power circuit based on the presence or absence of mains power; when mains power is normally supplied, the said mains power circuit is initiated or terminated by control signals outputted by the said control unit; when mains power fails, the said selector unit connects the said illumination appliance to the said backup circuit so it receives backup power for emergency lighting, and when mains power supply is normally supplied, the said controller operates the said illumination appliance by enabling the said illumination appliance to receive electricity processed via the said mains power circuit to providing lighting or not receive any electricity and remain extinguished, according to user intent.