Illumination – Automatic substitution of power supply or light source
Patent
1996-05-14
1999-04-27
Lazarus, Ira S.
Illumination
Automatic substitution of power supply or light source
362226, 362276, 40570, 200310, F21V 1904
Patent
active
058971947
ABSTRACT:
An apparatus for remotely verifying the potency of a backup power source for an information display apparatus using an electrically-actuated switch coupled between a primary power source interface and the switch. In one embodiment, a signal receiving device receives a transmitted signal, activates a switch, interrupts the supply of power from a primary power source, and requires the sign to be lighted by the backup power supply. The apparatus may include a circuit to transform alternating current line voltage into a reduced direct current voltage for the lighting source; a backup power supply recharging circuit that is integrated so as to allow the backup power supply to be recharged using power from the primary source; a power failure detector switching circuit that allows the light source to receive power from the backup power supply if the power from the primary power source were interrupted; and a control circuit power source. These components may be integrated upon a circuit board and placed in a housing which has a removable front and displays a message such as "EXIT." A multi-pronged connector may be interfaced to connect the primary power source to the integrated circuitry.
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Lazarus Ira S.
Lee David
LandOfFree
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