Patent ID: 8485691

Claim:
A solid-state lighting unit comprising: a solid-state array housing defining an internal compartment; at least one solid-state array module, comprising: an array of solid-state lighting elements; a solid-state lighting element control circuit; and a printed circuit board, the solid-state array module being accommodated within the internal compartment of the solid-state array housing; a rear surface of the solid-state array housing comprising a heat transfer element; and a power supply housing accommodating a power supply, the power supply housing having a front surface opposing the rear surface of the solid-state array housing, and having a chimney extending therethrough from the front surface of the power supply housing to a rear surface thereof; the rear surface of the solid-state array housing being fixedly disposed in a spaced apart relationship with respect to the front surface of the power supply housing, such that an input airflow space is defined therebetween so that, during operation of the solid-state lighting unit, outside air flows, in a first direction, into the input airflow space and toward the center of the solid-state lighting unit and exits, in a second direction, through the chimney to facilitate removal of heat from the solid-state lighting elements, wherein the first direction is substantially perpendicular to the second direction.