| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a system in a greenhouse having a simple structure which facilitates maintenance, while minimizing a space which needs thermal insulation.SOLUTION: In a system 1 for ascending/descending an inner roof in a greenhouse, a beam or horizontal material 2 built across between support pillars 3 of a greenhouse 10 supports a shaft 19 extending in a ridge direction in a rotatable state; and normal/reverse rotation of the shaft 19 vertically moves a suspension member 22 extending in a vertical direction, thereby ascending/descending an inner roof 40 for thermal insulation suspended by the suspension member 22. When a worker needs to take care of cultivated plants, the inner roof can be lifted higher than the worker's height, and when thermal insulation is needed, the inner roof can be descended to near the height of the cultivated plants.</p> |
