A laminated, optically transparent, ballistic resistant structure is described as having a first transparent layer, a second transparent layer of ceramic tiles spread across the first layer, and a third transparent layer. The information display member extends across the hinge portion, with at least the majority thereof being unsecured to the hinge portion. Between the frame and the opening of the partition wall, and the valve unit and the opening of the outer wall are integrally fixed at their contact portions through adhesion with an adhesive or by welding.