Electronic equipment (3) has an electronic equipment main body (1) and an external device (2) attached to this electronic equipment main body (1). A first side face (21B) of a housing (21) for the external device (2) adjoins an exhaust port (112) of the electronic equipment main body (1). A first opening (211B) is formed on this first side face (21B). A second opening (211D) is formed on a third side face (21D) facing the first side face (21B). Because of the rotation of an exhaust fan (113) and the air exhausted from the exhaust port (112), negative pressure is generated near the first opening (211B), and air flows from the second opening (211D) to the first opening (211B).