| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pipe for rolling up a film designed so as to hardly cause swelling or breakage on a pipe unit forming a pipe body when ventilating a plastic house through winding a film covering the plastic house onto the pipe body and relatively easily roll up the film. <P>SOLUTION: The pipe for rolling up a film has the following structure: a projection part 13 and a receiving part 14 as a connection end part of a pipe unit 11 are sealed so as not to make rainwater enters the pipe unit 11 so that swelling or breakage of the pipe unit 11 due to freeze-expansion of the rainwater can be prevented. Also, the pipe suppresses the load for turning a handle 2 when rolling up a film 3 because no entering of water into the pipe unit 11 hardly causes deflection on the pipe unit 11 due to its own weight. <P>COPYRIGHT: (C)2007,JPO&INPIT |
