Problem to be solved: to provide an illuminating apparatus for raising a highly reliable aquatic plant.The circuit board includes a circuit board comprising a LED group constituting a plurality of LED elements 262 connected in series and driving circuits for supplying light to the LED group in series, and a resin case, and the above circuit board is housed in the resin case The lighting apparatus for growing aquatic plants characterized in that the resin case is filled with an insulating resin.Diagram【課題】より信頼性の高い水中植物の育成用照明装置を提供すること。【解決手段】流れる電流に基づいて光を発光するＬＥＤ素子２６２を複数個直列に接続して構成するＬＥＤ群と上記ＬＥＤ群に発光のための電流を供給する駆動回路とを備えた回路基板と、樹脂製のケースを備え、上記樹脂製のケース内に上記回路基板を収納し、上記樹脂製のケース内をさらに絶縁性樹脂で充填した、ことを特徴とする水中植物の育成用照明装置。【選択図】図４
