Patent ID: 8922032

Claim:
An engine operating machine, comprising an engine, an operating machine driven by the engine, an operation box housing a controller for the operating machine, and a fan for cooling the engine and the operating machine, wherein the operation box has an upper opening for taking outside air, which is provided in an upper part of the operation box, and a lower opening for exhausting air to an outside, which is provided in a bottom part of the operation box, the lower opening in the operation box is disposed so as to be oriented to a flow of cooling air generated by the fan, the fan is provided on the engine side in the operating machine, the engine has an air intake port for taking air outside of the engine by rotation of the fan, the operation box has a bottom plate disposed obliquely to an outer face of the air intake port of the engine, and the lower opening is opened in the bottom plate so as to directly face from obliquely upward the outer face of the air intake port.