| 摘要 |
PROBLEM TO BE SOLVED: To perform noise countermeasure processing so as not to generate noise radiation on the inside of a video scope and signal degradation due to noise from the outside, in the video scope incorporated with a circuit board. SOLUTION: In the video scope 10, a mesh tube 14C of a conductive curved part 14, a metallic spiral tube 11A of a flexible insertion connection tube 18, a metallic frame 25 of an operation part 10 and a metallic spiral tube 18A of movable insertion connection tube 18 are electrically conducted so as to conduct from a tip part 12 to a conductive holding member 38 of a connector 17. An insulating plate 42 is provided between a shield plate 19 for storing the circuit board 30 within the connector 17 and the holding member 38.
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