| 摘要 |
PURPOSE:To facilitate manufacture of three dimensionally curved fluorescent lamp having many curved portions by preparing an approximately planar glass bulb formed with a zigzag discharge path through communication between plural linear portions and curved portions then thermally softening the curved portion of said bulb and bending. CONSTITUTION:Upon blowing in of pressurized gas through discharge tube 5 into U-shaped glass bulb 3, joints 1d-3d, 3d are formed. Then the joints 1d-3d, 3d are fused to position three continuous U-shaped glass bulbs 1-3 in same plane P-P. Then the communicating sections 8, 8 are bent in the arrow direction under still soft condition or after thermally softening if they 8, 8 are cooled and hardened. Consequently, respective U-shaped glass bulb 1-3 is positioned at every other side of hexagonal shape resulting in a three dimensional multi- bent fluorescent lamp. |
