| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a greenhouse curtain device capable of stretching curtain members in double layer with an easy structure, forming an air layer between each curtain member, and further increasing heat insulation effectiveness. <P>SOLUTION: This greenhouse curtain device has a lower rack wire 19 below an upper rack wire 18 which supports an upper layer curtain member 30, and comprises letting the lower rack wire 19 support a lower layer curtain member 40 to form an air layer between the upper layer curtain member 30. The lower layer curtain member 40 is opened and closed together with the upper layer curtain member 30. Since a mechanism to operate the upper layer curtain member 30 functions as a mechanism to open and close the lower layer curtain member 40, it is possible to make a double layer type with a minimal number of parts and increase heat insulation effectiveness by the air layer. <P>COPYRIGHT: (C)2008,JPO&INPIT |
