An illuminated display device includes a cabinet containing at least one illumination lamp and at least first and second sides. Each of the sides includes a first door rotatably connected to the cabinet, and a second door rotatably connected to the cabinet and sharing a common rotation axis with the first door. The second door is positioned between the first door and the illumination lamp when both the first and second doors are oriented in a door closed position. A door frame of the second door has opposed frame members each including incrementally spaced slots positioned as opposed pairs of slots. The slots releasably receive divider members, proximate ones of the divider members being adapted to releasably retain a sign insert. The sign insert is illuminated by the lamp and is visible through the first door in the door closed position.