| 摘要 |
A lamp ( 1 ) for illuminating fish farms to promote plant and organism growth, having an elongate watertight housing ( 2 ) having first and second ends and a sidewall; a light source ( 3 ) within the housing arranged to emit light from the housing; a port ( 4 ) in the housing to allow ingress of water when the lamp is submerged in water; and a heat-dissipating element ( 5 ) having an elongate heat dissipating body extending into the housing to dissipate heat generated by the light source. The heat dissipating body ( 5 ) has an internally located conduit ( 11 ) which is in fluid communication with the port ( 4 ) in a watertight arrangement so that when the lamp ( 1 ) is submerged, water comes in through the port ( 4 ) flows internally into the heat dissipating body via the conduit ( 11 ) so that the heat dissipating element ( 5 ) is cooled by internally circulating water. Halogen bulbs ( 3 ) can be used.
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