| 摘要 |
PURPOSE:To make winding density constant near a window section by forming a section groove near the top on the internal surface of a bobbin and winding a first horizontal deflection coil therein, and providing a secondary horizontal deflection coil that is mold-wound inside the internal surface. CONSTITUTION:A funnel-shaped bobbin 12 arranged on the internal surface of a core 11 around which a vertical deflection coil 16 is wound is comprised with a pair of bobbin formation members 13 having semi-circular circumferential barrel sections 13A, two or more ribs 13B that are located near tha top on the internal surface and are perforated mutually in the parallel direction, and positioning ribs 13C. Besides, coil sections 18 that are section-wound are provided in section grooves 14 each formed between the ribs 13B and coil sections 19 that are formed separately in a mold winding are provided in another section. Then a saddle-shaped horizontal deflection coil is formed by connecting them to each other. As a result, the winding density near a window section with thin coil distribution can be kept constant and space factor of winding can be increased as a whole. |
