AIR CONDITIONER FOR CONSTRUCTION MACHINE

An air conditioner for a construction machine which can ensure the required durability of a supply line and a discharge line, and which can reduce manufacturing costs. The air conditioner has an exterior unit outside the cab and an interior unit on the floor of the cab, the interior unit including an expansion valve disposed at a position above an upper surface of a floor plate of a cab. The expansion valve is connected to an outer device of the air conditioner by a supply line and a discharge line extending along the bottom surface of the floor plate, and bent upward at a passage which is formed in the floor plate. The supply line and the discharge line are fixed by a latching means such as a p-clip disposed in proximity to the passage.