| 摘要 |
PURPOSE:To avoid generation of electron-beam mislanding by providing bumps and long grooves for fitting parts composed of plate springs and stud pins. CONSTITUTION:Fitting parts composed of stud pins 151, 152, and plate springs 161, 162 are provided with long grooves 231, 232 and bumps 221, 222, so that the long grooves on respective sides spread mutually in the forward direction of the tube and in an open angle shape. Thus, only when the color selection means 2 expands and contracts mutually against the panel part 1, a color selection electrode 3 moves forward and backward to a fluorescent screen of the panel part 1 to change bar-height. And, because a central long groove 233 is provided along a central vertical line,the color selection means 2 does not turn and swing, and therefore the bar-height is changed with this groove as a base. |
