Electromagnetic radiation deflector for CRT display - employs earthed electrical conductor to disperse static electricity formed by tube picture screen

摘要

An earth plane (3) is positioned between the cathode ray tube picture screen (9) and an operator (2) sitting in front of it, and activates the radiation field emanating from the tube (8). The plane is electrically connected with the operator and an earthed electrical conductor (7). The earth plane comprises a plate-shaped surface, is made of electrically conductive material, and is electrically connected with a support surface (1) for the hands of an operator in connection with a keyboard (10), and the earthed conductor has a resistive coupling to earth. Carbon or material contg. carbon is used for the support surface, and the earth plane is made of metal, e.g. steel. The earthed conductor is terminated with an earthed plate (6) for connection to the current-feeding mains.