ELECTRODELESS FLUORESCENT LAMP, AND LIGHTING DEVICE OF THE SAME

摘要

PROBLEM TO BE SOLVED: To restrain the lowering of the supply amount of metal from an amalgam into a discharging space. SOLUTION: The electrodeless fluorescent lamp is composed of a lamp part 1 and a power coupler part 10. The lamp part 1 has a bulb 2, and a cylinder-shaped concave part (a cavity) concave toward inside is sealed on a bottom of the bulb 2, and a pipe-shaped part (an exhaust pipe) 5 communicated with the inside of the bulb 2 is welded to the bottom of the cavity 4. A metal container 7 containing the amalgam is housed in the exhaust pipe 5. Since the metal container 7 is made to locate at the inside of an induction coil 13 in the exhaust tube 5, and the metal container 7 is brought close to a discharge space, the amalgam gets into a state of a mixture of liquid phase and solid phase during the discharge is generated in the discharge space (during the electrodeless fluorescent lamp is lighted), and sufficient amount of mercury on the surface of the amalgam can be supplied to the discharging space. COPYRIGHT: (C)2005,JPO&NCIPI