To provide a resin film construction with automatic opening/closing mechanism which improves workability, does not damage crops and reduces costs.
Concerning the resin film construction composed of plural struts and a resin film constituting a closed space while being supported by the struts, a slit 11 is provided at the required position on the resin film 10, an actuator 20 to be reversibly deformed corresponding to the change of surrounding temperature is attached at one peripheral edge of slit 11 at least, and air is ventilated by automatically opening/closing the slit 11. The excess film is prevented from being drooped to damage workability, strong wind is prevented from being blown in from the bottom edge to damage the crops, and the actuator 20 is miniaturized and inexpensive.
SHIROYAMA KAISUKE
MITOSE KENGO
FURUKAWA ELECTRIC CO LTD