| 摘要 |
PURPOSE: To eliminate the possibility that the fitting angle of a sign board is easily changed by vibration, wind pressure, or the like once at fixing the fitting angle of the sign board. CONSTITUTION: Sign board supporting arms 2 are fitted to a stanchion 1, vertical holes for fitting sign boards are provided on the sign board supporting arms 2, the fitting vertical holes of metal fittings 34 fitted to the sign boards 3 are piled on the vertical holes for fitting the sign boards so as to insert bolts 4 therein, and the sign boards 3 are fitted to the sign board supporting arms 2 by hinge combination. At this time, recessed and projecting parts engaging with each other are provided on the circumferential plane of the vertical holes for fitting the sign boards and on the circumferential plane of the fitting vertical holes of the metal fittings 34 of the sign boards 3 to be piled thereon. |
