Patent ID: 9018839
Filing Date: 2015-04-28
Classification: F21V,F21Y

Abstract:
1. An LED lighting system, comprising: an LED housing holding an LED that will generate heat when it is emitting light; a cooling system; said cooling system situated to be able to transfer heat from the LED and said LED housing; and a control circuit that will control the amount of heat that will be transferred from the LED and LED housing by said cooling system; wherein said control circuit will monitor the temperature of said LED housing and control the amount of heat being transferred from said LED housing by said cooling system based on the temperature of the LED housing; said control circuit comprising of a transistor, a thermistor and a resistance unit; the size of said resistance unit and the sensitivity of said thermistor determining the operational characteristics of said control circuit; the size of said resistance unit and the sensitivity of said thermistor being determined on the basis at least one of the factors of the group consisting of (1) the heat transfer characteristics of the LED housing, (2) the sensitivity of the temperature on the emitting light of the LED and (3) the number of components in the LED housing such that light fluctuations in the light emitted by said LED that is caused by the temperature variations in said LED housing is minimized.