| 摘要 |
A frame for assembling shielding units for the radiation emitted by apparatus incorporating variously sized video terminals comprises two flat annular structures, namely a front and a rear, which are able to be connected together to simultaneously clamp the perimetral edge of a shielding plate (2), said annular structures each consisting of four identically configured consecutive elements (1), each comprising one corner (10) and one side (11) of the peripheral form of the corresponding flat annular structure, the elements (1) of the front or rear flat annular structure overlying the abutting end regions of the pairs of elements pertaining to the rear or front flat annular structure.
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