an electronic apparatus comprises a case configured to house an electronic circuit unit and includes an air intake , through which external air is taken into the case , and an exhausting opening , from which the air is ejected , an circulator provided in the case and configured to take the external air into the case through the air intake and supply the air to the electronic circuit unit , an evaporation unit provided in the case and configured to cool the air by thermal exchange between the air and a working medium and guide the air to the exhausting opening , the working medium being vaporized as a result of the thermal exchange , and a condenser provided out of the case and configured to liquidize the working medium and supply the working medium to the evaporation unit .