AUTOMATIC AUXILIARY LIGHTING UNIT
First Claim
1. An automatic auxiliary lighting unit for providing light in the event of a power outage, the unit comprising:
- means for delivering AC power to the unit;
means for rectifying the AC power to generate DC power;
a battery and means for charging the battery from the AC power;
a relay powered by the DC power and with input contacts electrically connected to the battery; and
at least one LED light source electrically connected to output contacts of the relay;
wherein the relay is configured so that the relay interrupts current flow from the battery to the LED light source when the DC power is supplied to the relay as a result of AC power being supplied to the rectifying means, and the relay automatically enables current flow from the battery to the LED light source when the DC power to the relay is interrupted as a result of AC power to the rectifying means being interrupted.
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Accused Products
Abstract
A lighting unit having a battery-powered auxiliary light source that is automatically powered in the event of a power outage. The lighting unit can be an integral portion of a lamp, configured as an add-on to an existing lamp, or configured as a standalone light source. The lighting unit includes a device for rectifying AC power supplied to the unit to generate DC power, a battery and a device for charging the battery from the AC power, a relay powered by the DC power and with input contacts electrically connected to the battery, and at least one LED light source electrically connected to output contacts of the relay. The relay is configured so that it interrupts current flow from the battery to the LED light source when the DC power is supplied to the relay as a result of AC power being supplied to the rectifying device, and the relay automatically enables current flow from the battery to the LED light source when the DC power to the relay is interrupted as a result of AC power to the rectifying device being interrupted.
31 Citations
14 Claims
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1. An automatic auxiliary lighting unit for providing light in the event of a power outage, the unit comprising:
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means for delivering AC power to the unit; means for rectifying the AC power to generate DC power; a battery and means for charging the battery from the AC power; a relay powered by the DC power and with input contacts electrically connected to the battery; and at least one LED light source electrically connected to output contacts of the relay; wherein the relay is configured so that the relay interrupts current flow from the battery to the LED light source when the DC power is supplied to the relay as a result of AC power being supplied to the rectifying means, and the relay automatically enables current flow from the battery to the LED light source when the DC power to the relay is interrupted as a result of AC power to the rectifying means being interrupted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification