Abstract: A cabin frame structure that allows a roof to be tightly attached is provided. A work vehicle cabin includes lateral frame members extending laterally, each of the lateral frame members having an upper surface and an end; longitudinal frame members extending longitudinally, each of the longitudinal frame members having an upper surface and an end; connecting plates each having an upper surface, the connecting plates connecting the lateral frame members and the longitudinal frame members, the connecting plates straddling across the lateral frame members and the longitudinal frame members; pillars attached to the ends of the lateral frame members, the ends of the longitudinal frame members, and the connecting plates; a roof disposed over the lateral frame members, the longitudinal frame members, and the connecting plates; and a seal provided between the roof and the lateral frame members, the longitudinal frame members, and the connecting plates.

Abstract: A working vehicle includes: a cabin; an air conditioning unit disposed at a rear upper portion of the cabin; and drain hoses connected to a drain portion of the air conditioning unit, water drained from the drain portion flowing through the drain hoses, wherein the drain hoses are respectively disposed at both left and right sides of the air conditioning unit in front and rear direction, and both front and rear portions of the drain hoses are provided with drain hose outlets from which the water flowing through the drain hoses is drained.

Abstract: A cabin frame structure that allows a roof to be tightly attached is provided.