Patent ID: 7267156

Claim:
A blind for adjusting illumination comprising: an upper-end support bar; a pair of brackets provided at both ends of the upper-end support bar, standing opposite to each other; a winding rod of which both ends are rotatably fitted into the respective brackets; an adjusting cord provided between one bracket and the winding rod to rotate the winding rod through a sprocket member; a blind sheet comprising alternate transparent and opaque parts and folded to have one end secured to the winding rod and the other end secured to the upper-end support bar; a weight body provided at a lower end of the blind sheet to stretch the blind sheet tight; wherein the winding rod includes more than one seating part and the blind sheet includes a fixing piece at one end thereof, so that the fixing piece can be fitted into the seating part, wherein the upper-end support bar has an extended tongue formed at its lower end for fixing one end of the blind sheet thereon; wherein the extended tongue has a seating groove and the blind sheet has a further fixing piece at the other end thereof, so that the fixing piece can be fitted into the seating groove; and wherein the weight body further comprises: a rod provided in a loop at a lower end of the blind sheet; a weight bar provided below the blind sheet; and fixing caps provided on both ends of the rod and the weight bar to connect them each other.