Patent ID: 9484615
Filing Date: 2016-11-01
CPC Classification: H01Q

Claim Text:
1. A mast arrangement for a radio network node, the mast arrangement comprising: a mast arranged for carrying a first module of the radio network node at an upper portion of the mast, the mast comprising an outer shell, and an air inlet channel and an air outlet channel arranged inside the outer shell, wherein the mast is provided with an air inlet opening communicating with the air inlet channel and an air outlet opening communicating with the air outlet channel, the air inlet opening and the air outlet opening being arranged to communicate with an ambient environment of the mast, a holding structure adapted to receive a lower portion of the mast, and a housing for a second module of the radio network node, the housing being adapted for at least partial underground installation such that the second module is located below ground level, the second module comprising electronic components of the radio network node, wherein, the air inlet channel is connected to the housing via an inlet passage configured to direct an airflow to an interior of the housing, and the air outlet channel is connected to the housing via an outlet passage, and wherein the interior of the housing comprises one or more interior walls configured to direct the airflow from the inlet passage along, and/or through, the second module to the outlet passage.