Patent ID: 7782531

Claim:
A portable projector screen assembly comprising: a first cylinder; two second cylinders slidably connected to two ends of the first cylinder respectively; a roller; two third cylinders slidably connected to two ends of the roller respectively; a collapsible member comprising a plurality of interconnected pieces, the collapsible member connected to the roller, and two free ends of the collapsible member fixed to free ends of the third cylinders respectively, enabling the collapsible member retractable or extendable parallel to the axis of the roller, wherein the roller and the collapsible member are received in the first cylinder, and the free ends of the third cylinders are fixed to free ends of the second cylinders respectively; and a screen comprising a plurality of fixing portions, the fixing portions respectively connected to joints of each two pieces of the collapsible member, the screen furled around the roller when the roller being rotated.