| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drainage structure of a rain gutter, which makes rainwater smoothly flow down into a down-pipe from a water collector by straightening the rainwater by a simple structure without clogging the inside of the pipe with dust and the like. <P>SOLUTION: A drainage structure of a rain gutter includes an eaves gutter, a water collector which collects rainwater flowing through the eaves gutter, and a down-pipe which is connected to a joint 3 provided in the lower part of the water collector and which makes the rainwater flow down into a drain outlet. The joint 3 comprises a spiral protrusive streak 10 which applies a turning force to the rainwater. <P>COPYRIGHT: (C)2013,JPO&INPIT |
