Cathode ray tube

A cathode ray tube comprising:

• an envelope including a face panel having a substantially rectangular effective portion and a funnel fixed to the face panel, the funnel having a cylindrical small-diameter neck at one end portion thereof and a large-diameter cone at the other end portion, the cone having a substantially rectangular cross sectional shape corresponding to the external shape of the face panel;
• and
• a deflection yoke including a substantially trumpet-shaped separator having one end portion, smaller in diameter, and the other end portion, larger in diameter, and a deflecting coil provided at least on the inner surface of the separator, and mounted in a region near the boundary between the neck and the cone of the funnel;
• the region near the boundary between the neck and the cone of the funnel being shaped so that the external shape thereof gradually changes from a circular shape on the neck side into a substantially rectangular shape on the cone side,
• the separator including:
• the inner surface having a shape resembling the external shape of the region near the boundary between the neck and the cone of the funnel so that the cross-sectional shape of the inner surface is circular at the one end portion of the separator and noncircular at the other end portion and gradually changes from the circular shape on the one end side into the noncircular shape on the other end side,
• a plurality of first hooks provided on the inner surface at the one end portion and extending along a central axis of the separator, and
• a plurality of second hooks provided on the inner surface at the other end portion, directed toward the other end of the separator and extending away from the central axis of the separator,
• the deflecting coil including a winding mounted on the inner surface of the separator with being wound around the first and second hooks,
• the separator including third hooks located on those parts of the inner surface thereof in which the cross section of the noncircular portion has a minimum radius of curvature, and engaged with those parts of the winding of the deflecting coil which extend across regions having the minimum radius of curvature, for preventing the winding from being lifted off the inner surface of the separator.