Safety board system

1 . A pedestrian crossing safety board system that is installed on a pedestrian crossing to assist the movement of mobility disadvantaged persons, the safety board system comprising:

a pair of lift platforms that are formed on sidewalks on both sides of the pedestrian crossing;

one or more shuttles that move along a predetermined travel path within a travel area set on the pedestrian crossing to travel back and forth between the pair of lift platforms and transport passengers to the opposite lift platforms;

a driving device that moves the shuttles; and

a control device that selectively operates the driving device,

wherein a pair of travel paths are set on the pedestrian crossing to allow bi-directional movement, and both ends of the pair of travel paths are connected to each other by a pair of direction changing units to form a loop structure in which the shuttles circulate.

2 . The pedestrian crossing safety board system of claim 1 , wherein the driving device is provided in the shuttle and comprises a plurality of wheels that are rotated by a drive unit and a sensing unit that detects the position and direction of the travel path to steer the wheels.

3 . The pedestrian crossing safety board system of claim 1 , wherein the lift platform is configured to face a door unit formed on the side of the shuttle when the shuttle changes its direction by a certain angle from the travel path parallel to the pedestrian crossing.

4 . A pedestrian crossing safety board system that is installed on a pedestrian crossing to assist the movement of mobility disadvantaged persons, the safety board system comprising:

a pair of lift platforms that are formed on sidewalks on both sides of the pedestrian crossing;

one or more shuttles that move along a predetermined travel path within a travel area set on the pedestrian crossing to travel back and forth between the pair of lift platforms and transport passengers to the opposite lift platforms;

a driving device that moves the shuttles; and

a control device that selectively operates the driving device,

a direction changing device that rotates the shuttle such that a door unit of the shuttle entering the lift platform faces the lift platform and rotates the shuttle such that the door unit of the shuttle exiting the lift platform is parallel to the travel path,

wherein the direction changing device comprises:

a pivot axis that is accommodated in an entry end of the shuttle to protrude therefrom; and

a plurality of wheel units that are accommodated in the shuttle at positions different from the pivot axis and protrude along with the pivot axis from the bottom of the shuttle to rotate the shuttle around the pivot axis.

5 . The pedestrian crossing safety board system of claim 4 , wherein the direction changing device comprises a steering unit that is connected to a pair of wheels provided at an exit end of the shuttle to form the driving device and configured to change the direction of each of the connected wheels at different predetermined angles to rotate the shuttle by the driving of the pair of wheels after the direction change.

6 . The pedestrian crossing safety board system of claim 4 , wherein the direction changing device forms a pair of entry-end-centered-rotation units that are symmetrically arranged in the forward and backward directions of the shuttle, rotates the shuttle entering the lift platform by a predetermined angle around the entry end to enter the lift platform, and reversely rotates the entered shuttle by a predetermined angle around the entry end to exit along the travel path taken at the time of entry.

7 . The pedestrian crossing safety board system of claim 5 , wherein the direction changing device forms a pair of entry-end-centered-rotation units that are symmetrically arranged in the forward and backward directions of the shuttle, rotates the shuttle entering the lift platform by a predetermined angle around the entry end to enter the lift platform, and reversely rotates the entered shuttle by a predetermined angle around the entry end to exit along the travel path taken at the time of entry.

8 . The pedestrian crossing safety board system of claim 4 , wherein the direction changing device forms:

an entry-end-centered-rotation unit that is provided in the shuttle to rotate the shuttle entering the lift platform by a predetermined angle around the entry end to enter the lift platform; and

an exit-end-centered-rotation unit that is provided at a different position of the shuttle to rotate the entered shuttle by a predetermined angle around the exit end to exit along a travel path different from the travel path taken at the time of entry.

9 . The pedestrian crossing safety board system of claim 5 , wherein the direction changing device forms:

an entry-end-centered-rotation unit that is provided in the shuttle to rotate the shuttle entering the lift platform by a predetermined angle around the entry end to enter the lift platform; and

an exit-end-centered-rotation unit that is provided at a different position of the shuttle to rotate the entered shuttle by a predetermined angle around the exit end to exit along a travel path different from the travel path taken at the time of entry.