DOWN PIPE UNIT AND GUTTER STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a down pipe unit capable of certainly introducing rain water into a branch delivery pipe and restraining rain water introducing quantity to the branch delivery pipe at the time of small rain quantity. SOLUTION: The down pipe unit constitutes its characteristic feature of providing a rain water guiding plate 2 to be inclined downward on an inner surface of a side wall of a cylindrical body 1 opened up and down, providing the branch delivery pipe 3 on a side wall facing against this rain water guiding plate 2 and providing a guiding water turbine 4 to carry the rain water to the branch delivery pipe 3 by rotating by receiving the rain water flowing from the rain water guiding plate 2 inside of the cylindrical body 1.