Patent ID: 8310158

Claim:
A light engine comprising: at least one power connector to connect to a power source to convey alternating current (AC) power; an AC to direct current (DC) power converter to: receive the AC power via the at least one power connector; and convert the AC power to DC power at a DC power level; a circuit board comprising: a plurality of light emitting diodes (LEDs) to receive the DC power and to emit light; and lighting optics to distribute the light emitted from the LEDs; and a chassis comprising: a first side comprising a plurality of first fins extending upward to dissipate heat in a first direction; and a second side comprising: a mounting surface for the circuit board; a fin wall surrounding the mounting surface, the fin wall comprising an inner surface to prevent the light from being emitted from the chassis in a direction from above less than a five degree angle below a reference plane intersecting a bottom surface of the chassis; and a plurality of second fins extending outward from an outer surface of the fin wall to dissipate heat in a second direction.