| 摘要 |
A double roll blind having various shaped perforated patterns is provided to regulate the percentage of sunshine and the luminosity of light freely by corresponding or dislocating various shapes of perforated patterns. A double roll blind having various shaped perforated patterns contains a housing(1) fixed to the top of a window frame, front and rear roll screens(2,2a) rolled around a rotating device built in the housing and ascent and descent by an operating rope(4), and a support bar(5) fixed to the bottom of the front and rear roll screens, wherein various shaped perforated patterns(3) are formed on the surface of the front and rear roll screens in a horizontal direction and various colored cellophane paper is attached to one side of the perforated pattern. |
