An electronic apparatus that includes: a housing having two surfaces extending in parallel, and a side surface connecting edges of the two surfaces; a circuit board placed in the housing and extends in parallel with the two surfaces; a plate member that extends to face a first surface of the circuit board; and a fan provided on a second surface of the circuit board, wherein the circuit board has a heat-generating electronic component mounted on the first surface and an opening through which air flows to the second surface side, and the plate member includes a concave groove formed in the first surface; a convex line formed on the second surface facing the circuit board on a portion corresponding to a back surface of the concave groove; and a guiding inclined surface formed on the back of the convex line to guide air to the opening.