Patent ID: 8563898
Filing Date: 2013-10-22
Classification: B60Q,F21V,F21W,F21Y

Abstract:
1. A light emitting diode (LED) lighting fixture comprising: a housing comprising an interior and a light-emitting window; at least one LED disposed within the housing and positioned to emit light through the light-emitting window; at least one LED driver configured to provide power to the at least one LED; a light transmissive lens disposed over the light-emitting window, the lens having an exterior surface and an interior surface; at least one temperature sensor; a frozen precipitation removal apparatus comprising an electrically resistive coating disposed over the interior surface of the lens, wherein the electrically resistive coating is light transmissive; and a monitoring and control circuit for receiving environmental values from the at least one temperature sensor and for controlling the frozen precipitation removal apparatus, wherein, when a frozen precipitation condition is determined by the monitoring and control circuit, the frozen precipitation removal apparatus is activated, wherein the frozen precipitation removal apparatus further comprises an LED driver circuit, wherein the LED driver circuit is coupled to and is controlled by the monitoring and control circuit such that the LED driver circuit supplies more current to the at least one LED when there is the frozen precipitation condition.