PROBLEM TO BE SOLVED: To prevent a light source from being damaged and corroded to enable long time use of a light source device.SOLUTION: A plate-shaped light source device 2 to be attached to an underwater fish light 1 is provided with: a base plate 31 on which a plurality of light emitting elements 30 are mounted a power cable 4 connected to the base plate 31 a base plate housing container 50 having a recessed part 51, in which the base plate 31 is housed, at the center thereof, and a groove 43, through which the power cable 4 is inserted, formed at a part of a peripheral wall part 52 of the recessed part 51 a filler 55 that is filled in gaps around the base plate 31 and the power cable 4 with the base plate 31 housed in the recessed part 51 and a plate member 54 joined to the peripheral wall part 52 of the base plate housing container 50 to seal the recessed part 51 filled with the filler 55.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2016,JPO&INPIT【課題】光源の破損や腐食などを防止して光源装置を長期間に亘って使用可能にする。【解決手段】水中集魚灯1に取り付けられるプレート状の光源装置2は、複数の発光素子30が実装された基板31と、基板31に接続される電源ケーブル4と、中央に基板31を収容する凹部51を有し、該凹部51の周壁部52の一部に電源ケーブル4を通す溝43を形成した基板収容器50と、凹部51に基板31が収容された状態において基板31及び電源ケーブル4の周囲の隙間に充填される充填材55と、基板収容器50の周壁部52と接合し、充填材55が充填された凹部51を密閉するプレート部材54と、を備える構成である。【選択図】図9
