| 主权项 |
1. An outdoor lighting device comprising at least one light-emitting diode; a housing carrying said light-emitting diode and provided with a heat exchange radiator, said light-emitting diode being thermally coupled with said heat exchange radiator; an air inlet; an air outlet; a covering that covers said heat exchange radiator; and a passage that is protected from solar radiation, said passage being defined between said heat exchange radiator and said covering in such a manner that said heat exchange radiator is arranged along said passage, said passage extending between said air inlet and said air outlet, the device also being configured to create a flow of air in said passage between said air inlet and said air outlet, said housing being arranged in such a manner that said air inlet is situated at a level that is lower than the level of said air outlet, said housing including a base that receives said heat exchange radiator and said light-emitting diode, and said covering comprising both a first element made of a first material extending from said air inlet and a second element made of a second material extending from said air outlet but not extending to the air inlet, wherein the first material is more thermally conductive than the second material. |
