Working machine

A working machine comprising:

• a machine body;
• a cabin on the machine body;
• an operator's seat provided inside the cabin;
• an air conditioner body to generate conditioned air to be supplied into the cabin;
• and
• a duct structure to guide conditioned air supplied from the air conditioner body;
• wherein
• the air conditioner body is operable to mix cool air and warm air to generate conditioned air for cooling or heating;
• the duct structure includes:
• a first duct to allow conditioned air for cooling to flow therethrough;
• a second duct to allow conditioned air for heating to flow therethrough;
• a switching box connected to the first duct and the second duct and including a switch portion to switch between a first state in which conditioned air supplied from the air conditioner body is allowed to flow through the first duct, and a second state in which conditioned air supplied from the air conditioner body is allowed to flow through the second duct;
• and
• a relay duct to connect the air conditioner body and the switching box to guide conditioned air generated by the air conditioner body to the switching box.