| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact electrodeless fluorescent lamp which can be lighted by an incandescent lamp fitting appliance. SOLUTION: This lamp has, an envelope which is air-tight and translucent has an A-line shape terminated in a thin end part 24 continued from a spherical upper side part to a gradually thinned lower side part, the inside is filled with a filling material to keep arc electric discharge by alternating magnetic field application, and the inner face is coated with a phosphor coating 18 to emit visible light when the phosphor coating is excited by ultraviolet rays by the arc electric discharge. In the envelope, a recessed part 26 is installed, an exciting coil 28 to generate an alternating magnetic field when excited by AC energy source is installed in the recessed part of the envelope, a ballast 30 is at least partly housed in the recessed part, and a base 16 is connected to the thin end part of the envelope. |
