COMPACT SELF-BALLAST FLUORESCENT LAMP

PROBLEM TO BE SOLVED: To decrease the temperature of components, improve reliability of a lamp, and extend its life, by providing a cover portion for storing a lighting circuit with a partition for partitioning a part of the lighting circuit. SOLUTION: A partition 10 includes a low heat conductive portion with a heat conductivity lower than that of a material of a cover portion, and preferably shields air going into the cover portion from a globe for storing a lamp. The upper part of the cover portion is a low temperature portion 20, and the lower part of the cover portion is a high temperature portion 30. Arranging an electrolyte capacitor 5 in the low temperature portion 20 can prevent failure and shortening the life. By integrally molding so that wiring of the electrolyte capacitor 5 to a substrate 3 penetrates through the partition 10, the partition 10 shields air flow between the low temperature portion 20 and the high temperature portion 30. In addition, the cover portion and the partition 10 are made of plastic or polyethyleneterephthalate and an air layer 11 is provided in the partition 10 to further prevent temperature of the high temperature portion 30 from conducting to the low temperature portion 20.