| 摘要 |
PROBLEM TO BE SOLVED: To provide a curtain-opening or closing device which is used for a green house and can disposing a driving wire in a tense state without loosening the wire. SOLUTION: This curtain-opening or closing device 1 for a green house comprises a guide member 2 spanned in the green house, a driving wire 6 which is wound or unwound on a drum 7 travel along the guide member 2, guide members 4 which are disposed in the direction approximately orthogonal to the guide member 2 and are moved along the guide member 2 by the driving of the driving wire 6, and curtain members 3 which cover the guide members 2 and whose tip portions are connected to the guide members 4 and extended or contracted by the movements of the guide members 4, and is characterized by dividing the drum 7 into two portions 71, 72 in the longitudinal direction, winding one end portion side 61 of the driving wire 6 on one portion 72, and winding the other end portion side 62 of the driving wire 6 on the other portion 71. |
