FLUORESCENT LAMP

PROBLEM TO BE SOLVED: To eliminate a process for mixing a phosphor, and provide a fluorescent lamp of higher lamp efficiency under the application of the conventional technology without any change, regarding a compact fluorescent tamp or the like having a plurality of glass tubes jointed to each other via bridge bonding. SOLUTION: A fluorescent lamp is formed out of a plurality of glass tubes 1a and 1b of constant diameter and straight type, a joint part 4 for connecting the glass tubes 1a and 1b to each other for forming a single electric discharge path, electrodes 3a and 3b laid at both ends of the single electric discharge path and a stem 5. Regarding the fluorescent lamp so formed, the glass tubes 1a and 1b are respectively formed to have phosphor layers 2a and 2b made of simple but different types of phosphor.