An industrial vehicle comprising: a work device attached at a front of a body; a counterweight portion for balancing a load on the work device, the counterweight portion being disposed at a rear of the body and having a ventilation path (5, 5') provided therein so as to extend in a front-rear direction of the body; an engine attached to the body as a power source and disposed forward from the counterweight portion; a radiator disposed rearward from the engine so as to be positioned immediately before a front end opening of the ventilation path (5, 5') or at a front portion of the ventilation path (5, 5'); a radiator fan for cooling the radiator, the radiator fan being disposed between the engine and the radiator and allowing an airflow generated by rotation of the radiator fan to be exhausted to the outside of the body through the ventilation path (5, 5'); an exhaust pipe supported by the body, connected to the engine at one end, and protruding from the rear of the body to the outside at the other end; and an exhaust gas purification device and a muffler provided at some positions along the exhaust pipe, the exhaust gas purification device and the muffler are disposed rearward from the radiator in the ventilation path (5, 5'), a windbreak plate (15, 15', 15", 16) being formed from a heat insulating material and being configured to prevent the airflow from blowing onto the exhaust gas purification device is disposed between the radiator and the exhaust gas purification device so as to face the exhaust gas purification device, and characterised in that an elevated part is formed between bottoms of the front and rear portions (6, 7) of the ventilation path (5, 5'), whereby the bottom of the rear portion is lower than the bottom of the front portion, the exhaust gas purification device and the muffler are disposed in the rear portion of the ventilation path (5, 5') so as to be positioned one above the other with the exhaust gas purification device lying above the muffler or to be positioned side by side in the right-left direction of the body, with the exhaust gas purification device at least partially protruding above the bottom of the front portion of the ventilation path, and the windbreak plate (15, 15', 15", 16) is erected on the bottom of the front portion such that the windbreak plate has an upper end surface positioned higher than an upper end surface of the exhaust gas purification device. a work device attached at a front of a body; a counterweight portion for balancing a load on the work device, the counterweight portion being disposed at a rear of the body and having a ventilation path (5, 5') provided therein so as to extend in a front-rear direction of the body; an engine attached to the body as a power source and disposed forward from the counterweight portion; a radiator disposed rearward from the engine so as to be positioned immediately before a front end opening of the ventilation path (5, 5') or at a front portion of the ventilation path (5, 5'); a radiator fan for cooling the radiator, the radiator fan being disposed between the engine and the radiator and allowing an airflow generated by rotation of the radiator fan to be exhausted to the outside of the body through the ventilation path (5, 5'); an exhaust pipe supported by the body, connected to the engine at one end, and protruding from the rear of the body to the outside at the other end; and an exhaust gas purification device and a muffler provided at some positions along the exhaust pipe, the exhaust gas purification device and the muffler are disposed rearward from the radiator in the ventilation path (5, 5'), a windbreak plate (15, 15', 15", 16) being formed from a heat insulating material and being configured to prevent the airflow from blowing onto the exhaust gas purification device is disposed between the radiator and the exhaust gas purification device so as to face the exhaust gas purification device, and characterised in that an elevated part is formed between bottoms of the front and rear portions (6, 7) of the ventilation path (5, 5'), whereby the bottom of the rear portion is lower than the bottom of the front portion, the exhaust gas purification device and the muffler are disposed in the rear portion of the ventilation path (5, 5') so as to be positioned one above the other with the exhaust gas purification device lying above the muffler or to be positioned side by side in the right-left direction of the body, with the exhaust gas purification device at least partially protruding above the bottom of the front portion of the ventilation path, and the windbreak plate (15, 15', 15", 16) is erected on the bottom of the front portion such that the windbreak plate has an upper end surface positioned higher than an upper end surface of the exhaust gas purification device.