| 摘要 |
An upper plate structure of a bridge for preventing sliding on a road is provided to guide speed of the vehicle passing through the bridge and to prevent an accident on the bridge by using heaters to apply heat to a projection member which is placed in a case, so that the projection member is not frozen at a low temperature. An upper plate structure of a bridge for preventing sliding on a road comprises a case(20), a projection member(30), springs(40), sensing devices(50), illumination sensors(S), a control unit(60), heaters(70), light emitting units(80), an input unit(90), and an output unit(100). The case has a receiving part(21) and an opening part(22) communicating with the receiving part, and is installed in an upper plate(10) of the bridge. The projection member includes a projection part(31) whose upper surface has recessed and receiving grooves(35,36), and a friction plate(32) which is made of a light transmitting material on the projection part. A thermal conduction plate(33) is installed at the projection member. The springs support the projection upward. The sensing devices have input and output terminals(51,52) and current delivering bodies(53). The heaters, which are controlled by a control signal of the control unit, apply heat to the projection member. |
