PROBLEM TO BE SOLVED: To provide a weed prevention member for a drain pipe that can prevent a seed from entering a drain port of a drain pipe, and to provide a drain port of a drain pipe using the weed prevention member.SOLUTION: A weed prevention member for a drain pipe is a water permeable and elastic columnar body. A drain port of a drain pipe in which the weed prevention member is combined with a drain pipe is installed with at least part of a lateral face of the columnar body while coming into contact with an inner wall of the drain pipe.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】排水管の排水口からの種子の侵入を防止できる排水管用防草部材、及び該防草部材を用いた排水管の排水口を提供すること。【解決手段】本発明の排水管用防草部材は透水性、及び弾性を有する柱状体であり、また本発明には本発明の防草部材と排水管とを組み合わせた排水管の排水口であって、前記柱状体の側面の少なくとも一部が排水管の内壁に接して設置されている排水管の排水口も含まれる。【選択図】図１
