| 摘要 |
PURPOSE:To enable a lamp whose mercury vapor pressure is regulated by amalgam to be manufactured with stable characteristics by a simple construction and in good efficiency, by moving a metal ball for a prescribed time so as to drop mercury and amalgam into a tubular bulb. CONSTITUTION:Firstly, a lid body 12 is opened and particles of mercury 15 and amalgam 16 which are previously weighed in prescribed quantities are put into a reception part 2. Then the lid body 12 is closed and the exhaust tube 10 of a tubular bulb 9 is installed in a mouth rubber 8. And while the inside of an exhaust head 1 and the bulb 9 are being exhausted through a vacuum piping 7, treatment of the electrodes is carried out. After making exhaust for a prescribed time, the particles of mercury 15 and amalgam 16 are dropped by movement of a metal ball 6 by operation of an electromagnet 14. Thus, lamps constructed to use the exhaust head 1 and control the mercury vapor pressure by amalgam can be manufactured with stable characteristics by a simple construction and in good efficiency.
|
