| 摘要 |
PURPOSE:To enable the reduction in size and weight, by providing a pair of electrodes extending perpendicularly to the direction of facing of a pair of flat glass plates. CONSTITUTION:Reinforcing glass rods 8, 8 are disposed perpendicularly to discharge electrodes 4, 4. Since the distance between the facing discharge electrodes 4, 4 and facing auxiliary electrodes 5, 5 is shorter at the side walls 4b, 4b of the discharge electrodes and those 5b, 5b of the auxiliary electrodes than the other portions thereof, the discharge start voltage at each of the side walls is lower than that at each of the other portions according to Paschen's law. Since the side walls have a protrusive form, an electric field is more likely to concentrate thereon. Therefore, discharge is more likely to take place at the side walls than at the other portions. As a result, the discharge is prevented from concentrating in the central portions of three sections partitioned by reinforcing glass rods 8, 8. The discharge is thus uniformed on the whole surface of a fluorescent lamp.
|
