| 摘要 |
PROBLEM TO BE SOLVED: To provide an arrow mark plate device for automatically opening and closing an arrow mark plate display part in the form of substantially inverted V-shape in the arrow mark plate device combining the two mutually opposite arrow mark plate display parts. SOLUTION: The upper ends of two arrow mark plate display parts 7a, 7b displaying an arrow mark figure part 7a are rotatably mounted, and a connection pieces 7g1, 7g2 are provided on the opposite faces of the two arrow mark plate display parts 7a, 7b. When they are hung up from an express-highway L by a gripping part 7c provided with the upper ends of the two arrow mark plate display parts 7a, 7b, the two arrow mark plate display parts 7a, 7b are closed by the operation of the connection pieces 7g1, 7g2 and contact rods 7f1, 7f2. When the two arrow mark plate display parts 7a, 7b are hung down on the express-highway L, they are opened by the operation of the connection pieces 7g1, 7g2 and a dish base 7i. |
