Heating element housing device

A heating element housing device having a cabinet for housing a heating element and a heat exchange device for cooling inside the cabinet by heat exchange between internal air inside the cabinet and external air, the heating element housing device comprising:

• an external fan for blowing the external air into a bottom portion of the cabinet;
• an internal fan for blowing the internal air into an upper portion of the cabinet;
• and
• a case for housing a heat exchanger disposed on an outer face of a cabinet door forming a lateral face of the cabinet,
• wherein, the heat exchanger is provided with
• an internal air intake port communicating with the internal fan,
• an internal air outlet port communicating with an inside of the cabinet and
• an external air intake port communicating with the exterior fan, and
• wherein an external air outlet port is disposed on a surface of the case opposite to the cabinet door for blowing out the heat-exchanged external air through the heat exchanger, and the exterior fan and the interior fan are centrifugal-type fans having an exterior fan intake port and an interior fan intake port respectively located below them.