Patent ID: 8549778

Claim:
A device at a portable display panel system comprising: a rack; at least one pair of upper and a lower holder ribs included in the rack; and a cloth or a panel of a printable material stretched between said pair of upper and lower holder ribs, said upper and lower holder ribs each comprising at least two longitudinal rods of a predetermined shape, which rods are provided with a through-cavity, wherein an elastic string extends through each of said upper and lower holder ribs, respectively, which strings are attached to ends of the holder ribs, wherein the device comprises male and female couplings, respectively, which with shape adaption are received and fixed to abutting ends of the rods, which are arranged as pairs with said upper and lower holder ribs and are so designed, that they can be brought together in two positions which are turned by 180° or in four positions which are turned by 90° relative each other, wherein at least a pair of the rods of the upper as well as the lower holder ribs are curved or bent.