BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a louver duct for a showcase, comprising: an evaporator (10) disposed in close contact with a wall in an evaporator and a blower fan for blowing cold air generated therein, and a louver duct for a showcase to guide air in the furnace to the evaporator. It is disposed in front of the evaporator to support and protect it, and a plurality of inlets 20 are formed in the lower portion so that the heated air in the chamber is sucked into the duct through the inlets by the driving of the fan 13, and the air in the duct is evaporator It is configured to guide toward the, and having a drain hose 25 at the lower end is configured to collect and drain the defrost water generated in the evaporator, by guiding the hot air in the oven to the evaporator to smooth the flow of cold air To improve the cooling efficiency, and to protect the evaporator, to maintain access by facilitating access to the evaporator There is an advantage in that the cooling efficiency is improved by smoothing the work and collecting and draining the defrost water generated in the evaporator.
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