PROBLEM TO BE SOLVED: To provide an underwater LED illumination device capable of effectively dissipating heat from an LED element in water.SOLUTION: An underwater LED illumination device 10, in which a through-hole 21 that penetrates from one end to the other end, has a cooling tube 20 having a plurality of outer surfaces 22, and an LED panel 30 including a plurality of LED elements 32, which is attached to the outer surfaces 22 of the cooling tube 20. The LED panel 30 is cooled by water flowing into the through-hole 21 of the cooling tube 20.COPYRIGHT: (C)2014,JPO&INPIT【課題】水中でLED素子からの熱を効果的に逃がすことが可能な、水中用LED照明装置を提供する。【解決手段】水中用LED照明装置10は、一端から他端に貫通する貫通孔21が形成され、複数の外面22をもつ冷却管20と、冷却管20の外面22に取り付けられ、複数のLED素子32を含むLEDパネル30とを備えている。冷却管20の貫通孔21に水が流入することによりLEDパネル30を冷却するようになっている。【選択図】図1
