The present invention relates to the field of
computer technology, and discloses a host device of a computer, comprising a
chassis, a cover plate, a mounting plate, an exhaust fan, an
exhaust pipe, and a connecting seat. The cover plate is fixed to the
chassis by bolts, the mounting plate is arranged at the inner wall of the
chassis, the exhaust fan is mounted on the mounting plate, the mounting plate is used to install host components, the
exhaust pipe is vertically fixed to the plate surface of the cover plate, one end of the
exhaust pipe penetrates the plate surface of the cover plate and is provided with a protective net, the other end of the exhaust
pipe is fixedly connected to the connecting seat, an exhaust channel is opened on the connecting seat, when the cover plate is matched and mounted on the chassis, the connecting seat and the frame of the exhaust fan are matched and contacted, when the host device is working, the exhaust fan extracts the hot gas in the chassis, and then discharges it through the connecting seat and the exhaust
pipe, and by transporting and discharging the hot gas through pipelines, it can be prevented that the hot gas is dispersed everywhere in the chassis, and the efficiency of sucking out the hot gas is improved, thereby improving the heat dissipation and cooling of the host device.