US Patent 8075154 Headlight with directed flow heat sink

A headlight having a housing, a light assembly, at least one heat sink, and an air mover. The housing has a front end, a rear end, an air inlet, an air outlet, an intake chamber in fluid communication with the air inlet, an exhaust chamber in fluid communication with the air outlet, and a passageway establishing fluid communication between the intake chamber and the exhaust chamber. The passageway is positioned forward of both the air inlet opening and the air outlet opening. The heat sink is positioned in at least one of the intake chamber and the exhaust chamber. The air mover is supported by the housing in such a way as to move air into the housing through the air inlet, through the intake chamber, over the heat sink, through the exhaust chamber, and out of the housing through the air outlet.