| 摘要 |
A sheet of polyethylene stock material is die cut to form an elongated display board with mounting tabs at opposite ends thereof. A central hinge is heat scored on the display board to form a transverse midline, and outlying hinges are heat scored between the opposing ends of the display board and adjoining mounting tabs. A reflective background is applied to reversible surfaces of the display board, and separate messages are silk screened on each surface. One message includes a triangular "hazard" symbol on each side of the central hinge. The other message includes the word "HELP" on each side of the central hinge. In use, the operator rolls down a side window of the vehicle, places the mounting tabs thereon in spaced relation to one another so that the display board is in a V-shaped configuration, then rolls up the window to sandwich the mounting tabs between the window and the door frame, thereby holding the sign so that the message on one surface of the display board may be seen by traffic traveling in opposite directions.
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