| 摘要 |
PURPOSE: A tennis court cover device is provided to prevent a cover film spread on the top of a tennis court from being damaged by the wind. CONSTITUTION: A tennis court cover device comprises: a frame(20); a winding drum which is pivotally installed in the frame separated upward from a tennis court(11); a cover film(40) which is reeled on the winding drum; a plurality of support tubes(50) in which a space for filling air is formed; an opening and closing part(60) which opens and closes the upper part of the tennis court by moving the cover film; a compressor which expands the support tube by injecting compressed air into the space; and a driving part(80) rotating the winding drum.
|
