| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a greenhouse curtain device extending double-layer curtain members in a simple structure. <P>SOLUTION: The greenhouse curtain device has the following structure: a first travelling part 21 and a second travelling part 22 of a drive wire 20 are mounted so as to be longitudinally different in their heights from each other; a first shelf line 50 and a second shelf line 60 are set so as to be longitudinally different in their heights to correspond to the first travelling part 21 and the second travelling part 22 respectively. The drive wire 20 is driven by a single driving part 10. In the greenhouse curtain device, two curtain members 70, 80 arranged respectively at positions different in height from each other can be controlled, and therefore appropriate regulation of an opening or closing amount of each of the curtain members 70, 80 enables various control of the curtain according to the kinds of cultivated crops so as to make both of the curtain members fully open, open half and half so as to look like substantially a single curtain member in a plan view, or completely close to set the curtain members in a double layer; namely, in a condition with a high heat-radiation rate or a high ventilation rate, or a condition with a high light-shielding rate or a heat insulation rate for example. Also, the greenhouse curtain device has a simple structure and low production costs because all to control the two curtain members is only a single driving part 10. <P>COPYRIGHT: (C)2007,JPO&INPIT |
