Patent ID: 7484793

Claim:
A roof of a cab comprising: a load-bearing structure made of plastic material, and a heat exchange assembly for treating an airflow, comprising at least one heat exchanger and at least one ventilation unit, the heat exchange assembly being borne by a central section of the load-bearing structure, said central section including a collection chamber for collecting a treated airflow, and wherein the load-bearing structure comprises a closed annular channel for the distribution of the treated airflow towards the interior of the cab, the annular channel surrounding said central section and communicating with said collection chamber, wherein the load bearing structure comprises: a central modular element housing the heat exchange assembly; a modular connecting element set on the lower side of the central modular element; and a modular closure element set on the upper side of the central modular element wherein said modular elements are detached, independent units which are superposed and fastened to each other.