| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a cold cathode discharge tube in which a prescribed amount of mercury pellets filled in the glass bulb is diffused between a pair of main electrodes and sealed by preventing leakage of the mercury gas due to break of the glass bulb in the manufacturing process of the cold cathode discharge tube. SOLUTION: An opening at one end of a cylindrical glass bulb 2 is sealed by bead glass 4a of a main electrode 3a at one end and the other main electrode 3b is inserted in a prescribed position in the glass bulb 2. And mercury pellet P is filled from the opening of the other end, and the inside of the glass bulb is exhausted and a rare gas is filled, and then, the opening at the other end is sealed. While the glass bulb 2 is rotated centered on an axis, the mercury pellet P is heated and vaporized through the glass bulb 2 and diffused between the pair of main electrodes 3a, 3b, and then, the vaporized mercury is filled between the pair of main electrodes 3a, 3b. COPYRIGHT: (C)2004,JPO
|
