“Smoking” or “No Smoking” signs or the international “No Smoking” symbol, which consists of a pictorial representation of a burning cigarette in a circle with a bar across it, shall be prominently posted and properly maintained where smoking is regulated by this act by the owner, operator, manager or other person having control of the area. A “Smoking Permitted” sign shall be prominently posted and maintained at every entrance to a public place where smoking is permitted under this act.