| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for a CRT socket with high insulation preventing surface leaks and capable of sufficiently coping with thickness reduction of the CRT socket and enhancement of a focus impressed voltage. SOLUTION: This CRT socket comprises a base part, a cylindrical center hole penetrating from front to back, a ring-like part arranged coaxially outside the cylindrical center hole and provided with a plurality of signal contact housing chambers recessed in a back side for arranging signal contacts inside each one and signal contact holes arranged in a front side for allowing signal terminals of a CRT to communicate with the signal contact housing chambers and connecting them to the signal contacts, and a cover part provided with focus contact housing chambers recessed in a back side for arranging focus contacts inside them and focus contact holes arranged coaxially with the signal contact hole in a front side for communicating focus terminals of the CRT and connecting them to the focus contacts. An underfill part shaped like a recessed part is provided in a surface side, a back face side, or both sides of the ring-like part between the focus contact holes and the signal contact holes. It is also favorable to provide a penetrating groove in a focus contact hole side of the recessed part.
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