PROBLEM TO BE SOLVED: To configure a work vehicle in which a difference in intake air velocity on an intake surface of a dust-proof net provided in a dust-proof case is reduced to suppress adhesion of dust. SOLUTION: A radiator 35 arranged outside the machine body with respect to an engine E, and a dustproof case C arranged outside the machine body from the radiator 35 and having a dustproof net 45 capable of sucking outside air in a state where suction of dust is blocked. And a cooling fan 34 that sucks outside air through the dustproof case C to cool the radiator 35. A wind speed adjusting member 50 for adjusting the wind speed of the sucked outside air is provided inside the dustproof case C at a position inside the fuselage 45 relative to the dustproof net 45. Inside the dustproof case C, the outer peripheral portion of the wind speed adjusting member 50 and the dustproof case C are provided. The cover members 51a and 52a for blocking the flow of the outside air between the inner surface portion and the inner surface portion are provided. [Selection diagram] Fig. 9【課題】防塵ケースに備えた防塵網の吸気面での吸気風速差を低減して塵埃の付着が抑制される作業車を構成する。【解決手段】エンジンＥより機体外側に配置されたラジエータ３５と、ラジエータ３５より機体外側に配置され、防塵網４５を有し塵埃の吸引を阻止する状態で外気の吸引を可能にする防塵ケースＣと、防塵ケースＣを通して外気を吸引してラジエータ３５を冷却する冷却ファン３４と、を備えている。防塵ケースＣの内部で防塵網４５よりも機体内側箇所において、吸引された外気の風速を調整する風速調整部材５０を備え、防塵ケースＣの内部に、風速調整部材５０の外周部と防塵ケースＣの内面部との間の外気の流れを遮断するカバー部材５１ａ，５２ａを備えた。【選択図】図９
