NOZZLE FOR SUPPLYING ANTIFREEZING AGENT

PROBLEM TO BE SOLVED: To supply an antifreezing agent always in a wide range corresponding to a road surface by constituting an antifreezing agent supply nozzle which is installed under a road surface and used to prevent the road surface from freezing to supply the agent supplied to metal cases from the outside by overflowing. SOLUTION: Metal cases 1 are arranged in series. In each case 1, an antifreezing agent supplied from a supply port 3 is supplied into the case 1 through a supply port 4 and discharged on a road surface by overflowing from a porous material 2 set in the case 1. In this process, in each case 1, the sizes of the supply ports 4 are adjusted so that the agent is supplied equally from each case 1 irrespective of a road condition. For example, when the left side of a road is higher than the right side, the sizes of the supply ports 4 are changed to decrease from left side case 1 to the right side case 1. In this way, the agent can be discharged nearly equally from each case 1.