There is a need for a combine which will not allow rainwater to be introduced into the inside of a loop part from an external air introducing part. In addition to this, there is also a need for a combine from which an operational panel can be easily removed. According to the present invention, the combine comprises: an operating cabin with a loop part (14) an air conditioning unit (22) mounted in the loop part (14) that air-conditions the operating cabin an opening part (19b) disposed in a loop rear wall part (19A) which composes the rear side wall surface of the circumference of the loop part (14), and is communicated with the air conditioning unit (22) and an external air introducing part (24) which is installed in the opening part (19b) and introduces external air to the air conditioning unit (22). The external air introducing part (24) is composed to take in external air from the upper part and lower part thereof, and is installed in the opening part (19b) to be slanted upward to the rear side. Additionally, a chassis frame (1031) is supported by an operating part frame in a state that the bottom part of the chassis frame (1031) and the top part of the operating part frame (1032) are vertically separated so that an insertion space (1035) may be formed between the bottom part of the chassis frame (1031) and the top part of the operating part frame (1032). An end part of a chassis (1030) side among side panels (1012) is supported by the operating part frame (1032) in a state of being inserted in the insertion space (1035), is configured to be placed over the bottom part of the chassis frame (1031) and the top part of the operating part frame (1032), and is equipped with a panel cover (1036) which envelops the insertion space (1035) from outside the machine body.COPYRIGHT KIPO 2016빗물이 외기 도입부로부터 루프부의 내부에 침입하기 어려운 콤바인이 요망되고 있다. 또한, 조작 패널을 용이하게 떼어낼 수 있는 콤바인이 요망되고 있다. 루프부(14)를 갖는 운전 캐빈과, 루프부(14)에 내장되고, 운전 캐빈 내의 공기를 조절하는 에어컨 유닛(22)과, 루프부(14)의 외주의 후방 측벽면을 구성하는 루프 후방
