Patent ID: 7626322
Filing Date: 2009-12-01
Classification: H01J,H05B

Abstract:
1. A self ballasted fluorescent lamp having a bottom end and a top end that are respectively located at two lengthwise ends of the self ballasted fluorescent lamp, the self-ballasted fluorescent lamp comprising: a luminous tube including a bulb that has an outer diameter ranging from 3 to 8 mm and a pair of electrode-side end portions, the luminous tube being formed in a such a bent shape that: the electrode-side end portions of the bulb are located at a bottom end of the luminous tube in a height direction of the luminous tube, and the luminous tube has a maximum width that is a maximum dimension in a direction intersecting the height direction and is not greater than 30 mm; a lighting device for lighting the luminous tube; and a cover housing the lighting device and having a bottom end, to which a base is attached, and a top end, at which the luminous tube is disposed, the cover being formed in such a shape that: the proportion of the distance by which the cover extends from the base to the lamp length excluding the base ranges from 0 to 25% and that the maximum outer diameter of the cover ranges from 1.0 to 1.5 times the outer diameter of the base.