| 摘要 |
An insulating frame of a deflection yoke is fixed to a funnel with a metal band and a metal screw. A partition formed so as to be integrated with a holder holding a magnet ring of a CPU includes a first partition provided on a first axis so as to hide the metal screw when the deflection yoke is seen from the holder side along a tube axis, and a second partition provided on a second axis orthogonal to the first axis. A height H<SUB>1 </SUB>of the first partition, a height H<SUB>2 </SUB>of the second partition, a minimum height H<SUB>min </SUB>of the partition, a height H<SUB>M </SUB>of a pull of a magnet ring on a side closest to the deflection yoke, and an outer circumferential edge diameter R<SUB>M </SUB>of the magnet ring excluding the pull satisfy relationships: H<SUB>1</SUB>>H<SUB>2</SUB>, H<SUB>M</SUB>-H<SUB>2</SUB>>10 mm, and H<SUB>min</SUB>>R<SUB>M</SUB>. Because of this, a discharge between a metal band and a metal screw that fix the deflection yoke, and a velocity modulation coil can be prevented without decreasing the operability of the rotation adjustment of the magnet ring of the CPU.
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