PROBLEM TO BE SOLVED: To enhance safety in reaping and harvesting work of a combine harvester by preventing accumulation of waste straw and dust in an exhaust processing device and exhaust pipe so as not to allow high temperature exhaust gas to be blown to threshed waste culms.SOLUTION: An exhaust processing device (13) is installed which purifies exhaust gas exhausted from an engine (7), and in front of a first product grain-lifting cylinder (17) of a threshing device (5), an exhaust pipe (11) is erected from the exhaust processing device (13) upwardly. An exhaust guiding pipe (12) is connected to an upper part of the exhaust pipe (11), and the exhaust guiding pipe (12) is extended rearward at above the threshing device (5), so that an exhaust port (12a)opens rearward.COPYRIGHT: (C)2015,JPO&INPIT【課題】本発明は、排気処理装置や排気管に藁屑や塵埃が堆積するのを防ぎ、高温の排気ガスを脱穀済みの排稈に吹き付けないようにして、コンバインの刈取収穫作業の安全性を高めることを課題とする。【解決手段】エンジン(7)から排出される排気ガスを浄化する排気処理装置(13)を搭載し、脱穀装置(5)の一番揚穀筒(17)の前側において排気処理装置(13)から上方へ排気管(11)を立設し、排気管(11)の上部に排気誘導管(12)を連結し、この排気誘導管(12)を脱穀装置(5)の上側において後方へ延設して排気口(12a)を後方へ向けて開口する。【選択図】図2