| 摘要 |
A deflection system which improves picture distortion and misconvergence by eliminating the wrong winding of coil. in which a bobbin 20 for the deflection coil, whose partial cross section is of a funnel shape, is mounted on the outer peripheral surface of a cathode ray tube between a neck and a funnel for winding a deflection coil 26 thereon. When the deflection coil is wound from a bend onto the inner surface of a bobbin body, a coil layer regulating portion 40 is formed at a claw on the bend side. The coil layer regulating portion is a thick-wall portion formed on the inside of the claw on the bend side. By this thick-wall portion, a horizontal deflection coil 26 is wound on an average with respect to the bottom of respective bends 22 and 24 even when the horizontal deflection coil is wound from the bend 22, 24 onto the inner surface of the bobbin body. As a result, the coil is wound on an average with respect to a coil groove inside the bobbin, so that the wrong winding of coil is eliminated. Thereupon, the effective length of the coil and the coil distribution become symmetrical at the right and left of the bobbin 20, by which picture distortion and misconvergence can be improved.
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