PROBLEM TO BE SOLVED: To provide a water collecting duct that prevents water from going round to the reverse side of a gutter and flowing back by surface tension.SOLUTION: The water collecting duct has a water collecting part 10 that collects drain water from an end part of a gutter 2, a gutter holding part 11 that holds the gutter 2 in such a state that the end part of the gutter 2 floats on the water collecting part 10, and a tongue-piece 12 that abuts to a lower surface 2b of the part of the gutter 2 in the floating state on the water collecting part 10. With the tongue-piece 12 abutting to the lower surface 2b of the part having be in the floating state of the gutter on the water collecting part 10, water droplets gone round from a front side to the reverse side at the end of the gutter 2 by surface tension, are guided along the tongue-piece 12 by surface tension and to the water collecting part 10, thereby being collected and drained to a prescribed position.【課題】表面張力により樋の裏側へ回り込んで逆流することを防止した集水ダクトの提供。【解決手段】樋２の端部からの排水を集水する集水部１０と、樋２の端部が集水部１０の上で浮いた状態となるように樋２を保持する樋保持部１１と、樋２の集水部１０の上で浮いた状態となった部分の下面２ｂに当接する舌片１２とを有し、樋２の端部において表面張力により表側から裏側へ回り込んだ水滴は、この樋の集水部の上で浮いた状態となった部分の下面２ｂに舌片１２が当接しているため、表面張力によりこの舌片１２に沿って樋２の集水部１０へと導かれ、集水されて所定位置に排水される。【選択図】図１０
