| 摘要 |
PURPOSE: A variable message sign is provided to prevent safety accidents during replacing components of a display unit by manufacturing the display unit to be rotated from side to side. CONSTITUTION: A support(20) is installed on a variable side of a road in a vertical direction. A display unit(28) is lifted vertically. The display unit is rotated in the orthogonal direction to the support. A lifting means lifts the display unit. A rotation means rotates the display unit. |
