Of course, the present invention includes a light emitting device inside the week, the display contents can be easily identified at night to and will sign a separate case of malfunction alarms caused by separation on adhering to address signs to facilitate maintenance by sending to the administrator of the remote. ; Road signs of the present invention 1 includes a plurality of light emitting members to identify the number of addresses at night (9) signs the casing part that is built-in (3), the sign is used as the power unit case of the light emitting element 9 (3) In attachment to the solar cell section (6), and the sign casing part (3) to emit light signs (1) consisting of a bonding plate 7 is adhered to the back surface of the case part (3) for attachment to a specific site, The switch for detecting the separation of the adhesive plate (7) (11), the solar cell section (6) to detect the illuminance around the light-emitting member 9 on and off according to the ambient light to the light amount detection sensor 13, the switch 11 on and off states in ambient light detection sensor 13, the photo sensor operation determination unit configured to determine whether or not according to the operation of the unit 15, the detection sensor 13 in the photo sensor operation determination section 15 When it is determined that it does not operate the remote administrator 21, which emits a warning signal to the warning signal sending unit 17, a remote administrator and the malfunction of the sensor (13) receives a warning signal is sent out from the transmitting section 17 ( 21) characterized in that it comprises a warning signal receiving unit 19 to inform the.
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