Matsushita Electric Industrial Co., Ltd.

Hidenori Sato

Yasuhiro Torigoe

Yuji Shima

Masahiro Kamada

A deflection yoke is used for a cathode ray tube (CRT) including a glass tube having a screen surface and a straight portion for accommodating an electron gun. The deflection yoke includes a main deflection yoke including first and second horizontal deflecting coils and first and second vertical deflecting coils, and a sub-deflection yoke provided at a side of the main deflection yoke towards the electron gun of the CRT. The first and second horizontal deflecting coils have substantially saddle shapes and includes first and second coil-connection-wire sections and first and second horizontal deflection sections, respectively. The first and second coil-connection-wire sections are wound in a direction perpendicular to a tube axis of the CRT and along the straight portion, respectively. The first and second horizontal deflection sections are located towards the screen surface from the first and the second coil-connection-wire sections, respectively. In the deflection yoke, magnetic lines emitted from a rear end of the horizontal deflecting coil towards the electron gun decreases. An induced voltage generated at the sub-deflection yoke accordingly decreases, and thus, a noise on a screen noise produced due to the induced voltage is reduced.

Deflection yoke

A deflecting yoke which is of a divisionally winding type that electric wires are wound in a plurality of slots so as to provide a saddle-shaped deflecting coil. Included in the deflecting yoke is an insulating frame having a smaller aperture section which is therein equipped with a hooking device for hooking electric wire bundles so that portions of the electric wire bundles are curved along a cathode ray tube. The curved portions of the electric wire bundles are arranged to be closer to a top of neck portion of the cathode ray tube as the corresponding electric wire bundles are wound in the slots formed at more inner position of the deflection yoke. The hooking device comprises a plurality of guide walls along which the portions of the electric wire bundles are curvedly hooked. The plurality of guide walls are partitioned by a plurality of partitions protruded in directions perpendicular to the axis of the insulating frame so as to form a plurality of guide channels which can partition and divide the electric wire bundles to considerably prevent occurrence of shorts between the electric wires.

Growing community of inventors

Kumamoto, Japan

Hidenori Sato