| 摘要 |
PROBLEM TO BE SOLVED: To provide a self light emitting type road stud capable of stably receiving a radio wave and stably and synchronously flashing. SOLUTION: This self light emitting type road stud receives a standard time radio wave and controls the timing of the flashing based on the standard time radio wave. A metal case 1 stores a solar cell 3 disposed so as to receive the solar light, a battery body 7 storing an electromotive force of the solar battery 3, a light emitting body 4 emitting the light by a power fed from the battery body 7, a receiving circuit 15 receiving the standard time radio wave, antennas 8 and 9 connected to the receiving circuit 15, a flashing control circuit 13 controlling the timing of the flashing of the light emitting body based on the standard time radio wave in its inside. The opened upper part of the metal case 1 is closed by a transparent plate 2, the solar battery 3 is disposed right under the transparent plate 2, and the antennas 8 and 9 are disposed right under the solar battery 3. |
