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.