in fig1 a suspended from the drop blade 8 at one end and at the other end they are held in corresponding hinges of the two wall brackets 5 as shown in both fig2 and 3 the awning case 2 consists of a shaped sheet metal part that has a cylindrical outside shape that sheet metal part is not however closed tight around its circumference but has a cloth slot 11 bounded by two bead like edges 12 and 13 which extend over the entire length of the awning case 2 in the region of these bead like edges the sheet metal is rolled inwards as shown in fig3 or else the edges are correspondingly thickened so that there will be no outwardly exposed sharp sheet metal edges the inner diameter of the awning case 2 is greater than the maximum diameter of the cloth rolled up on the winding shaft 6 and the arrangement is disposed so that the axis or the center of curvature of the awning case 2 coincides with the longitudinal rotation axis of the roll up shaft 6 since the two wall brackets 5 have a mutually identical shape in mirror image the following description relates to only one of the two wall brackets the explanation holds in similar fashion for the other wall bracket which is therefore not further described in what follows the wall bracket 5 has a separable outer bracket 14 which has an interior c shaped surface corresponding to the outer diameter of the awning case 2 that surface is shown at 15 in fig3 within that surface 15 the awning case.