| 摘要 |
An LED floodlight fixture includes a housing, an LED heat sink secured to the housing and an LED arrangement mounted on the heat sink in non-water/air-tight condition with respect to the housing. The heat sink including (i) a base having an LED-adjacent surface and an opposite surface and (ii) a heat-dissipating section having heat-dissipating surfaces extending from the opposite surface. The LED arrangement is mounted to the LED-adjacent surface in non-water/air-tight condition with respect to the housing. The housing preferably forms at least one venting gap to provide cool-air ingress to and along the heat-dissipating surfaces by upward flow of heated air therefrom. The base of the heat sink has one or more venting apertures to provide cool-air ingress to and along the heat-dissipating surfaces by upward flow of heated air therefrom. |
