Transport vehicle equipped with a cooling system for storing and cooling products during transport, the cooling system comprising a cooling chamber for receiving goods to be cooled and a cooling unit, - said cooling unit having a carbon dioxide storage compartment equipped with thermally insulated walls, - said cooling unit further having an exhaust pipe for removing gaseous carbon dioxide from the carbon dioxide storage compartment and gas-permeable but particle-impermeable filter means for preventing carbon dioxide snow particles in the carbon dioxide storage compartment from entering the exhaust pipe, - said cooling unit further having an air cooling compartment, thermally but not fluidly connected to the carbon dioxide storage compartment, comprising at least one cooling channel (26, 27) which has an inlet opening (28, 28') into which a cooling air supply line opens which is flow-connected to the cooling chamber for feeding cooling air from the cooling chamber into the cooling channel (26, 27) and an outlet opening (29, 29') at which an cooling air outlet line opens which is flow-connected to the cooling chamber for feeding cooling air from the cooling channel (26, 27) into the cooling chamber, and - said cooling unit further having a heat exchanger surface on which the carbon dioxide storage compartment and the cooling channel/s (26, 27) are thermally well-conductive but gas-tightly connected to each other, the transport vehicle being characterised in that the cooling unit comprises a supply line for feeding liquid carbon dioxide into the carbon dioxide storage compartment, said supply line opening out inside the carbon dioxide storage compartment at an expansion device, and a connection piece for detachably connecting a liquid carbon dioxide filling device, and in that the filter means is configured to retain said carbon dioxide snow in the carbon dioxide storage compartment. - said cooling unit having a carbon dioxide storage compartment equipped with thermally insulated walls, - said cooling unit further having an exhaust pipe for removing gaseous carbon dioxide from the carbon dioxide storage compartment and gas-permeable but particle-impermeable filter means for preventing carbon dioxide snow particles in the carbon dioxide storage compartment from entering the exhaust pipe, - said cooling unit further having an air cooling compartment, thermally but not fluidly connected to the carbon dioxide storage compartment, comprising at least one cooling channel (26, 27) which has an inlet opening (28, 28') into which a cooling air supply line opens which is flow-connected to the cooling chamber for feeding cooling air from the cooling chamber into the cooling channel (26, 27) and an outlet opening (29, 29') at which an cooling air outlet line opens which is flow-connected to the cooling chamber for feeding cooling air from the cooling channel (26, 27) into the cooling chamber, and - said cooling unit further having a heat exchanger surface on which the carbon dioxide storage compartment and the cooling channel/s (26, 27) are thermally well-conductive but gas-tightly connected to each other, the transport vehicle being characterised in that the cooling unit comprises a supply line for feeding liquid carbon dioxide into the carbon dioxide storage compartment, said supply line opening out inside the carbon dioxide storage compartment at an expansion device, and a connection piece for detachably connecting a liquid carbon dioxide filling device, and in that the filter means is configured to retain said carbon dioxide snow in the carbon dioxide storage compartment.