To solve the problem that a lighting instrument having an electric bulb socket is necessary for lighting up since a section connected with a power supply in a practical stabilizer built-in type fluorescent lamp is an electric bulb base shape.

Illumination using no lighting instrument is possible by preparing a lighting device wherein a ceiling wiring tool for a lighting instrument is directly set up to be a power source, and the problem can be solved. Upon using the lighting device, problems for costs, weight, and a design of a conventional lighting device can be solved in comparison with the case in which the stabilizer built-in type fluorescent lamp with an electric bulb base is turned on.