US Patent 9298230 Electronic device

An electronic device includes a chassis and a plurality of electronic modules. The chassis includes a front plate, a rear plate, a top plate, two side plates, a bottom plate and a plurality of dividing plates. The electronic modules are set between two adjacent dividing plates. The front plate includes an air inlet defined in a bottom. A first space is defined between a bottom of each dividing plate and the bottom plate. A second space is defined between a top of each dividing plate and the top plate. At least one of the top of the dividing plate and the bottom of the dividing plate is arranged stepped down from the front plate to the rear plate. The airflow flows through the air inlet, the first space, then flows up through the electronic modules, and then flows to the rear plate.