| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plastic greenhouse which can be more inexpensively constructed while having sufficient strength against torsion and the like. <P>SOLUTION: The frame structure of a plastic greenhouse is made up as follows: a roof surface part and side surface parts are structured by joining, at intervals, a plurality of longitudinal frames formed by connecting inside longitudinal pipes and outside longitudinal pipes via connecting metal fittings, to horizontal pipes set up in a ridge direction. In the structure, the top end parts of a pair of the right and left longitudinal frames at one side are connected via joint materials at the center of the roof surface part; and the joint materials are each formed into an almost angle shape, and structured so that a primary connection body connecting the respective inside longitudinal pipes of a pair of the right and left longitudinal frames at one side are connected to a secondary connection body connecting the respective outside longitudinal pipes with one another, via connection materials each having a prescribed length. <P>COPYRIGHT: (C)2012,JPO&INPIT |
