| 摘要 |
PURPOSE: An underground utilities route display pack capable of performing partial replacement of an information display board is provided to partially and independently replace the information display board when an information modification factor is generated. CONSTITUTION: A buried pin(11) is arranged in the lower surface of a display pack body(10). A display board housing(12) is arranged in the upper end of the display pack body. A plurality of combination concave grooves(13) is arranged with an equal interval along a circumferential direction in the bottom surface of the display board housing. A hooking piece(15) is projected out in one upper end side of an inner-facing surface of the combination concave groove. An information display board(20) is stored in the display board housing. A plurality of combination protrusions(21) inserted in the combination concave groove is projected out in the lower surface of the information display board. A lock protrusion is arranged in order to maintain locking by being caught in the lower surface of the hooking piece when moving along the combination concave groove in the lower side of the inner-facing surface of the combination protrusion. An eject spring arranges a spring insertion part in the lower surface of the combining protrusion to an upward direction. The eject spring supports the bottom surface of the combination concave groove while being installed with insertion in the spring insertion part. |
