Abstract: When many LED lamps are provided on a printed wiring board to secure an amount of light, light can only be emitted from the side on which the lamps are provided, which limits the range in which light is emitted. To solve this problem, the present invention provides a plurality of chip type LED lamps 1 chained using conductive members 2 made of a flexible plate material.

Abstract: Since electrodes need to be subject to preheating before lighting in a fluorescent lamp, a preheating device such as a glow starter is necessary and it takes a long time to complete lighting. Further, in a fluorescent lamp of a cold-cathode type, which is lit up by applying high voltage between electrodes without preheating, although lighting is instantly carried out, a large ballast having a chalk coil and the like is necessary, thereby increasing the cost. Besides, since it is necessary to fill mercury steam and Argon gas in an arc tube, the material of the arc tube is limited to glass having high resistance to pressure and high hermeticity. An LED chain body 2 formed by connecting a plurality of LED lamps 3 via flexible members 4 is inserted into a transparent or translucent tube 1.

Abstract: When a number of conventional LED lamps are arranged on a wiring board and are placed in an electric bulb, it is not possible to use a printed wiring board larger than an internal diameter of a base mounting part of the electric bulb, so that a quantity of obtained light is limited. Further, light can be emitted only from a wiring printed surface, which serves as an arrangement surface of LED lamps, of the printed wiring board, so that the range of emitted light is limited. An LED chain body 2 formed by connecting a plurality of LED lamps 3 via flexible members 4 is inserted into a hollow body 1a constituting an electric bulb main body 1.