| 摘要 |
<p>The lamp holder is made safer by making the live parts inaccessible. the lamp terminals comprise a ring (16) and a central pin (17) which connect with the filament through the envelope. The lamp holder (2) has a corresponding annular recess (21) and central hole (22) at the base of which are the live terminals (23, 25). The lamp holder is made of insulating material, plastic or mineral base. It may also incorporate a skirt (20) which shrouds the lamp connections (16, 17) until they are withdrawn clear of the live parts in the holder. The holder may be adapted to fit into standard lamp holders thus enabling conversion of existing installations.</p> |
