PROBLEM TO BE SOLVED: To provide a water supply device which can be reliably operated over a long period of time, further can be constructed simply, and can be minimized.SOLUTION: A water supply device includes a water guide pipe P for discharging the water of a water source from a discharge port P2 to a cultivation land by connecting an inlet P1 to a water intake port Q provided in the water source such as a water channel, a casing 10 for housing the water guide pipe P, an elevating member 20 for supporting a supported portion P3 set on the discharge port P2 side than the inlet P1 in the water guide pipe P, and an actuator 30 for vertically moving the supported portion P3 between a water supply position A where water is discharged from the discharge port P2 and a water stop position B upper than the water supply position A by going the elevating member 20 up and down, thereby providing the actuator 30 in the casing 10.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】長期間に亘って確実に動作させることができ、しかも施工が簡単でコンパクト化が可能な給水装置を提供する。【解決手段】水路等の水源に設けられた取水口Qに流入口P1が接続されて、水源の水を吐出口P2から耕作地に吐出する導水管Pと、導水管Pを収容するケーシング10と、導水管Pにおける流入口P1よりも吐出口P2側に設定された被支持部P3を支持する昇降部材20と、昇降部材20を昇降させて、吐出口P2から水が吐出される給水位置A及び給水位置Aよりも上方の止水位置Bの間で被支持部P3を上下動させるアクチュエータ30とを具備し、アクチュエータ30が、ケーシング10に設けられているようにした。【選択図】図2
