Float bath for manufacturing float glass having a cooling device

A float bath for manufacturing a float glass, comprising:

• a brick assembly composed of a plurality of bricks to store a molten metal so that a float glass is capable of moving forward while floating on the molten metal;
• a bottom casing for forming an outer side of the brick assembly;
• and
• an air blower installed under the bottom casing to supply a cooling air toward the bottom casing,
• wherein the air blower is disposed so that the cooling air is injected exactly to a center of a border of adjacent bricks,
• wherein the air blower includes a plurality of nozzle assemblies disposed under the bottom casing by a predetermined distance, and
• wherein each of the nozzle assemblies includes:
• a center nozzle oriented toward a center of a border of adjacent bricks;
• a long side nozzle unit disposed to be oriented toward a border of long sides of the bricks from the center nozzle;
• and
• a short side nozzle unit disposed to be oriented toward a border of short sides of the bricks to cross the long side nozzle unit at a right angle.