| 摘要 |
PURPOSE: A coupling unit of a sign board is provided to improve productivity by reducing a manufacturing cost and an operating time. CONSTITUTION: A coupling unit of a sign board is formed by coupling a side frame with a top plate cover. The coupling unit(35) includes a supporting protrusion(41), a hole(43), and a cutout piece(42). The supporting protrusion is formed in one side of a top end of a coupling piece(40). A tilt surface(41a) is formed in a bottom end of the coupling piece. The hole is formed inside the coupling unit. The cutout piece is formed in a bottom side separated from the supporting protrusion.
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