Deflection yoke with a compensation coil having damping material composed of a silicon composition

Abstract

The present invention provides deflection yoke devices used for a cathode ray tube. One of the deflection yoke devices of the present invention comprises a compensation coil having a bobbin formed with a hollow in which an internal thread is cut, a screw core forcibly fitting in the hollow of the bobbin and a damping material interposed between the bobbin and the screw core to prevent the displacement of the screw core when an external vibration or a shock is applied to the deflection yoke device. Another of the deflection yoke devices comprises a compensation coil having a bobbin formed with a cylindrical hollow in which an internal thread is cut, and a screw core fitting in the internal thread of the cylindrical hollow to allow the screw core to be displaced in a longitudinal direction of the cylindrical hollow, wherein the bobbin comprises first and second halves which are made by dividing the bobbin into two parts along a longitudinal direction of the bobbin, and a retainer section is provided on one of the first and second halves so as to extend to another of the first and second halves to allow the screw core to be pressed so that the displacement of the screw core due to vibration or shock is prevented.

Dependencies are inferred from the claim text.