Patent ID: 8876333

Claim:
A luminaire comprising: a. a heat sink cast from a single piece of metal including a base having a generally circular central section, a first extension section and a second extension section which together form a generally elliptical non-circular shape; b. a printed circuit board with a heat transmitting gel on an upper surface and containing an LED affixed to a lower surface, the printed circuit board press fit retained against a lower surface of the generally circular central section of the base so that at least a portion of the upper surface and heat transmitting gel contact the base of the heat sink; c. the heat sink includes a body with a multiplicity of integrally cast spaced apart radial fins extending from the body in an outward radial direction, an air gap between adjacent radial fins, a portion of the body aligned with and having a shape conforming to the shape of the base and a lower section of each of the multiplicity of radial fins having an interior portion which extend from a portion of the body which conforms to the shape of the base, each fin of the lower section of radial fins extending radially outward to an exterior portion having a widened body portion; d. the body extending from the base to a top surface, an upper section of the multiplicity of radial fins each having an interior portion with a lower surface in contact with the top surface of the body, the upper section of the multiplicity of radial fins surrounding the body with an interior surface of each interior portion of the upper section of the multiplicity of radial fins and the top surface of the body forming an internal air gap, the upper section of radial fins extending radially outward to an exterior portion having a widened body portion; and e. a respective fin section from the upper section of the multiplicity of radial fins aligned with a respective fin section from the lower section of the multiplicity of radial fins, each upper and lower aligned fin section separated from an adjacent aligned upper and lower fin section by at least one air gap, the heat sink body and multiplicity of radial fins are cast from a single piece of metal so that heat generated from the LED is transferred to and adsorbed into the base of the heat sink and the heat then travels through the body and into the multiplicity of radial fins and the heat is then caused to move to a space in a structure located above the heat sink and as a result heat generated by the LED is dissipated from the LED.