| 摘要 |
PURPOSE:To enable a high-luminance and high-efficiency lighting to be made by using argon as charging gas, giving the charging pressure of gas with its specific quantity, pulse impression time and an intermittent pulse impression time ratio respectively to a lamp, and intermittently lighting the lamp in such a condition like this. CONSTITUTION:A rare gas discharge fluorescent lamp has a phosphor screen formed almost all over the inner circumferential plane of its straight-shape cylindrical glass bulb 10 into which argon gas or krypton gas is charged and of which inside has a pair of electrodes 3a, 3b sealed at both-end portions. Also as the charged argon gas, a kind of gas having pressure ranging from 10Torr to 100Torr is used and then a pulsating voltage having the ration of its impression time to one cycle, being within 5 percent and 80 percent, and also having the impression time below 150 microseconds is impressed between both the electrodes 3a, 3b for making it possible to light the rare gas discharge fluorescent lamp. The pulsating voltage impression thus increases the probability of exciting the molecule of the charged gas, and then the lighting efficiency of the lamp becomes larger. |
