| 摘要 |
The inventive device for heating by means of a flexible heating film comprises a flexible plastic film (11) provided with conductors (10) for supplying electric current in order to provide joule-effect heating on the surface of said plastic film, individual power supply areas (102) connected to conductors and connections (5) for connecting said individual power supply areas to a current source. The film is embodied in the form of a strip (1) extending in a longitudinal direction and the individual power supply areas (102) are longitudinally extended, in particular along the both sides of the strip in such a way that electric current passes the heating film in a substantially transversal direction. Said invention can be used, in particular for protecting cultures and plans (20, 30) against cold damage. |
