To definitely guide car drives by providing a through-hole across the main body of a post and installing an illuminant through an illuminant installing member.

A base 6 is embedded in a hole made in a road with an adhesive filled up in the hole. Then, a base 6, a post body 1, a reinforcing body 2 and a pedestal 3 formed in one united body are coupled with a bolt detachably together with polyurethane, polyethylene or the like and are erected and installed above the road surface. Then, electric wires are inserted to a groove communicating with the hole and buried in the road with an adhesive, and inserted through the base 6 and connected to a lead wire 10. Moreover, a through-hole 1a crossing the post body 1 is made near the top of the post body 1, a light emitting body 12 such as a light emitting diode is attached to the through-hole 1a via an illuminant installing member 11, and the light emitting body 12 is connected to lead wires 10. In this way, the car drives can be guided adequately and definitely.