PARTIALLY RECESSED LUMINAIRE

摘要

A luminaire (12a) includes a fixture (28a), a light engine (30), and a heat flange (32a). The fixture is received in a support surface recess (16) and defines a cavity with radius R. The light engine is disposed within the cavity and includes at least one light source. The heat flange is disposed about a distal end region of the fixture and includes a hollow, generally conical frustum shape extending radially outwardly from the fixture and extending away from the distal end region of the fixture. A distal -most end of the heat flange is configured to be disposed a distance D from the support surface when the fixture is received in the recess, greater than or equal to 0.4R. Thermal energy is conductively transferred from the light engine, through the fixture, to the heat flange, then convectively transferred to surrounding air to create air currents flowing along the support surface, reducing the junction temperature.