Display case for cinema advertisements - has removable plate for carrying display and transparent front face

摘要

The display case is used to house a publicity advertisement or cinema display etc. It has a transparent front face and a support plate for carrying the display which is removable through the bottom of the case. The support plate is moved via a counter-weight system, with the weight fixed to a chain, passing around a pulley at the top of the display case, the other end of the chain being fixed to the support plate. The chain pref. passes around a second pulley fixed to the top of the counter-weight, this pulley being free to move vertically to allow corresponding movement of the support plate, which runs between two vertical guides.