Patent ID: 9526151
Filing Date: 2016-12-20
CPC Classification: F21K,F21S,F21V,F21Y,H02J,H05B,Y02B

Claim Text:
1. An apparatus for a light emitting diode light bulb, comprising: a plurality of light emitting diodes connected to a base, the plurality of light emitting diodes providing illumination in the light emitting diode light bulb; and a module which detects a residual voltage of an electrical power source when a control for powering the light emitting diode light bulb is powered off, the residual voltage detected when a path to a hot wire is open from the electrical power source; wherein the module detects the residual voltage on a closed path with the light emitting diode light bulb that remains closed between a neutral wire and a ground wire, when the path to the hot wire is open from the electrical power source; wherein the module determines that a power outage occurred and switches to battery power from a battery in response to detecting no presence of the residual voltage of the electrical power source.