Cooling air passage apparatus of refrigerator

A cooling air passage apparatus of a refrigerator, comprising:

• a left cooling air duct having a plurality of cooling air discharge holes located at the left side of an opened marginal portion of an inner case forming a storage chamber, and configured to discharge cooling air from the left side of the storage chamber;
• a right cooling air duct having a plurality of cooling air discharge holes located at the right side of the opened marginal portion of the inner case, and configured to discharge cooling air from the right side of the storage chamber;
• a door cooling air duct installed in the refrigerator door, and configured to receive a flow of cooling air from the left cooling air duct or the right cooling air duct and to discharge the cooling air into the storage chamber;
• a rear cooling air duct installed at a rear side of the inner case, and having a plurality of cooling air discharge holes configured to discharge cooling air from the rear side of the storage chamber;
• a ventilating unit for ventilating cooling air generated from a freezing system to the storage chamber;
• and
• a diverging unit for diverging and guiding cooling air ventilated by the ventilating unit to the left cooling air duct and the right cooling air duct.