Abstract: This protection and/or decorative device for apertures in walls, windows or the like is intended notably for protecting private homes or commercial or industrial premises against the action of light, insects, or simply the occupants' intimacy, or simply for reasons of aesthetics, and is applicable notably to the construction of folding or raisable blinds, curtains or the like. This device comprises at least one folding or raisable screen (3), and means (4) for folding or raising the screen. This screen, whether of the folding or raisable type, consists of at least two retractable blinds (5, 6) having different functions and disposed one after another; these blinds are controlled separately and/or simultaneously by means of a common control device (7).