BARRIER

PROBLEM TO BE SOLVED: To facilitate rearranging work of a barrier by connecting an arm to a rotary shaft in a rotation driving mechanism and supporting a barrier rod so that the axis of the barrier rod crosses the axis of the rotary shaft. SOLUTION: A rotation driving mechanism 11 is arranged in the inside of a main body part 1, and an arm 2 is installed in a rotary shaft 111 in the rotation driving mechanism 11, while a barrier rod 3 is supported so that the axis 01 of the rotary shaft 111 crosses the axis 02 of the barrier rod 3. In this way, the arm 2 and the barrier rod 3 are laterally symmetric with respect to the axis 02, and rearranging work of a raising/lowering side between a right-hand one and a left-hand one requires rearrangement of the arm 2 alone, so that replacement of the barrier rod 3 to the opposite side is dispensable. On the other hand, a part equivalent to the height of multilevel crossing between the rotary shaft 111 and the barrier rod 3 is dispensed with, so that reduction in a size of the arm 2 and in its weight can be carried out. As a result, rearranging work of a barrier can be facilitated.