PORTABLE BACK LIGHT MODULE, NAMELY, A FOLDABLE MODULE FOR DISPLAYING POSTERS, SIGNS, OR SHEET MATERIAL ADAPTED TO BE ILLUMINATED, THE MODULE COMPRISING ONE OR MORE FOLDABLE PANELS HAVING A FOLDED POSITION FOR ALLOWING THE MODULE TO BE STORED AND TRANSPORTED AND A DEPLOYED POSITION WHEREIN EACH PANEL FORMS A SUBSTANTIALLY FLAT SURFACE AND LIGHTS MOUNTED TO THE PANEL AND ADAPTED TO LIGHTEN SAME AND SHED LIGHT THEREFROM, THE MODULE INCLUDING OR NOT INCLUDING FASTENERS FOR REMOVABLY MOUNTING ONE ...