Abstract: A screening device has elongate sheet of a thin non-transparent material windably mounted at one end to a spring-activated rotatable rod within a portable housing having a longitudinal slot through which the sheet is movable for winding and unwinding purposes while being prevented from passing entirely into said container through said slot. The container is provided at one end thereof with means for readily and releasably connecting the same in an upright position with a stationary object, while a supporting post is connectible to said sheet at the free end thereof and adapted to be secured to a stationary object at a distance from said first mentioned stationary object to thus support the unwound sheet in a substantially vertical position.