Patent ID: 6437502
Filing Date: 2002-08-20
Classification: H01J,H05B,Y02B

Abstract:
A self-ballasted fluorescent lamp including:an arc tube which is formed by parallely arranging a plurality of U-shaped bent bulbs; each said bulb having an outer tube diameter ranging from 8 to 11 mm; said plurality configured in a maimer wherein a maximum width of said arc tube is from 32 to 43 mm and that the lamp has a total luminous flux of not less than 700 lm and a lamp efficiency of not less than 60 lm/W when the lamp is lit at the lamp power of 7 to 15 W; envelope having a cover that includes a base and is adapted to permit said arc tube to be attached thereto, the height of the envelope ranging from 110 to 125 mm including the height of the base; and a lighting circuit contained in the cover.