Patent ID: 8684116

Claim:
A construction machine provided with an engine room, comprising: an engine guard which surrounds the engine room and includes an upper side outer wall; an engine which is installed in the engine room and under the upper side outer wall; a heat exchanger which is installed in the engine room; a cooling fan which is installed in the engine room and adapted to suck air for cooling from an exterior of the construction machine into the engine room; a guide member provided at a position lower than the upper side outer wall to define an exhaust passage between the upper side outer wall and the guide member, the exhaust passage being at a position higher than the engine; and an exhaust air guide, wherein: the engine guard is formed with a plurality of exhaust ports for discharging the air in the engine room to the exterior of the construction machine, the exhaust ports including a first exhaust port which is opened in a direction parallel to an axial direction of an engine output shaft, and a second exhaust port which is formed in proximity to the first exhaust port on a leeward side of the first exhaust port with respect to a direction parallel to the axial direction of the engine output shaft, and opened upward at a position lower than the first exhaust port, the guide member defines the exhaust passage to guide the air to the first exhaust port in the direction parallel to the axial direction of the engine output shaft so as to cause the air to be discharged from the first exhaust port in the direction parallel to the axial direction of the engine output shaft; and the exhaust air guide is provided between the first exhaust port and the second exhaust port and has a shape of rising obliquely upward and along a direction approaching the second exhaust port to change a flow direction of the air discharged through the first exhaust port from the direction parallel to the axial direction of the engine output shaft into an upward direction, at a position on the windward side of the second exhaust port.