Here is a proper display hood… on the A-6E Intruder. The hood has a handle which extends it so the B/N can look inside easily, and retracts it for normal flight and entry to/egress from the cockpit (note hinged arms on both sides).
A-6E with hood over FLIR display (bombardier/navigator’s station) and joystick for FLIR/laser designator:

A-6E without hood or joystick:
