PROBLEM TO BE SOLVED: To provide a self-luminous road stud in which an antenna receives standard radio wave satisfactorily and the light emitting synchronization of a light emitter is hard to be out of order.SOLUTION: A self-luminous road stud includes a solar cell, a power accumulator, a light emitter, a control unit for controlling the lighting and lights-out thereof, an antenna for receiving a standard radio wave, and a body for storing all of the above respective members in the inside. The control unit is provided so that the lighting and lights-out of the light emitter can be controlled in timing based on the Japanese standard time of the standard radio wave received by the antenna, and the antenna is disposed in the outside of an outer edge of the solar cell. A solar cell is not disposed right above the antenna, and the standard radio wave received by the antenna is hard to be interrupted by the solar cell, and thereby the light emitting synchronization of the light emitter is hard to be out of order.SELECTED DRAWING: Figure 4
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