Light for underwater use and its manufacturing method

摘要

Light (10, 100, 170) for underwater use, light comprising: a rear housing component (18) that includes a rear wall having an internal surface, the rear housing component (18) being formed at least in part of an electrically insulating and thermally conductive polymeric material; an electronic assembly (40, 42) having a front surface and a rear surface, including the front surface at least one light emitting element (114) mounted therein, the electronic assembly in thermal communication with the rear housing component (18); characterized by a thermally conductive material located between and in contact with the rear surface of the electronic assembly and the inner surface of the rear wall; and a lens (12) mounted on the rear housing component (18) and forming a water-tight seal between them, the lens (12) and the rear housing component (18) enclosing the electronic assembly (40, 42 ); wherein one of the rear housing component (18) and the lens (12) further comprises an annular recess (34) to receive an annular projection (32) formed in the other of the rear housing component (18) and the lens (12), the annular projection (32) being inserted in the annular recess (34) to enclose the electronic assembly and form the water-tight seal between the rear housing component (18) and the lens (12); wherein said thermally conductive material transfers heat from said electronic assembly to said rear housing component, and at least a part of the rear housing component (18) conducts heat away from the electronic assembly (40, 42) to cool the electronic assembly ( 40, 42).