Patent ID: 9726364
Date: 2017-08-08
CPC Classifications: F21V,F21Y,H05B

Claim:
1. A light fixture, comprising: a circuit board; a plurality of light emitting diodes (LEDs) disposed on the circuit board arranged into at least three clusters of LEDs with a plurality of at least four LEDs within each cluster, wherein the three clusters are connected electrically in series, wherein each of the LED clusters is arranged with one LED in a center of the respective LED cluster with a remaining portion of the plurality of LEDs arranged substantially in a circle around the LED in the center of the cluster; a power circuit that converts a commercial alternating current (AC) source to a direct current (DC) voltage and includes a circuit that controls current through the LEDs; and a heat sink that is thermally coupled to the circuit board; and an AC fan that is powered by the AC source to move air over the heat sink, wherein the light fixture has an efficacy of at least 70 lumen per watt of power consumed from the AC source.