A variable wavelength LED light having low drag designed based on the phototaxis of underwater creatures is disclosed, which not only can improve the conventional LED lights that have single wavelength light source, but also can prevent the LED lights from being broken caused by strong sea wind or damaged by crash with the low drag structure when sailing. In terms of innovative design, the disclosed is designed based on the aggregation behavior of fish groups to different wavelengths, which is able to modulate a most suitable light wavelength for aggregating fish groups based on different sea areas, various fish species, and distinct seasons, so as to attract fish group to aggregate to enhance the practicability of the LED light used at sea. Additionally, the LED light is built-in with an E40 lamp head that can be used for a traditional screw lampholder, to meet the operational need of lighting maintenance and quick replacement for current lighting used in the boat, which allows the disclosed to be used directly on the conventional devices of fish lamps, so that the disclosed not only reduces cost and has a high efficiency in installation and disassembly, but also improves the convenience in use and the degree of acceptance for fisherman. Accordingly, the disclosed is able to lower the cost for offshore and distant fisheries at the era of energy competition moreover, the low drag variable wavelength LED light has the advantage of being more suitable to be used in current fishing boats compared to other fish lamps.一種依據水下生物趨光特性設計之具低風阻之可變波長LED燈具,不但可改善傳統LED燈具單一波長光源外,其低風阻結構亦可減少船隻航行時,因強力海風導致燈具斷裂或碰撞損壞。在創新設計方面,本發明依據魚群對波長之聚集特性所設計之具低風阻之可變波長LED燈具,可依據不同海域、不同魚種及不同季節調變誘集魚群之最適光波長,藉以吸引魚群聚集,以增強LED燈具在海上之實用性。此外,該LED燈具內建具E40燈頭可沿用傳統之螺旋式燈座,以因應目前船用燈具維護與快速換裝之作業需求,使本發明之LED燈具可直接沿用於傳統集魚燈之設備上,達到低成本與高安裝拆卸效率之餘,更能提高漁民之使用方便性與接受度,能在能源競爭之時代,降低沿近海與遠洋漁業之成本,並使本發明之具低風阻之可變波長LED燈具較其他LED集魚燈有更為適合於現行漁船上使用之優勢。1‧‧‧球泡型燈具11‧‧‧燈罩112‧‧‧水平或垂直開孔113‧‧‧斜角開孔12‧‧‧光源固定機構121‧‧‧固定件1211‧‧‧第一表面1212‧‧‧第二表面122‧‧‧光源固定座123‧‧‧固定環
