| 摘要 |
PURPOSE:To shorten the desired time for restarting in such a way that a heat radiating piece is provided in a luminous tube on which a coil is wound up, and heat in the light emitting tube is radiated through the heat radiating piece to a lamp base when it is turned off. CONSTITUTION:A heat radiating piece 5 consisting of a lamp base 1a, 1b and a magnetic material to form a heat radiating passage is provided in a luminous tube 8. A coil 7 which conducts an electrode 9a to a movable piece 5a is wound up on this heat radiating piece 5. The movable piece 5 is brough into contact with one part of the luminous tube 8 when it is turned off, while at the same time, energized resilient force is given, and when it is turned on, the movable piece 5a is disconnected from the luminous tube 8 by electromagnetic force of current flowing through the coil 7. |
