Sun and rain protection system

A sun or rain protection installation has an extendable curtain (12) into two partial areas (14) is divided, on a common, centrally arranged winding shaft (16) can be wound. A spring tensioning device (34) tightens the Behangbereiche, the free ends (20) are connected to a pulling device. To avoid a complicated spring balancing within the pulling device, it is proposed that the pulling device a consistent, the free ends (20) of the Behangbereiche (14) connecting Umlenkseil (22) via at least two deflection rollers (24, 26) is deflected, and a windable on a winding roller (32) traction cable (28) which is fixed to one of the two deflection rollers (24) which are movable.