| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a switch gear for a tunnel greenhouse securely raising and lowering films and imparting a stable posture. <P>SOLUTION: The switch gear 100 for the tunnel greenhouse comprises a fixing member 110 held on a pipe 31, a L shaped lifting member 130 slidably attached on a guide 113 of the fixing member 110, a weight 135 attached on the lift member 130. A skirt of a film 32 is raised up by raising the lifting member 130 by pulling a string 51 which is inserted through a string passing part 131c of the lifting member 130. The lifting member 130 lowers by releasing the string 51 because of the weight of the weight 135. <P>COPYRIGHT: (C)2003,JPO |
