This invention relates to a heat transfer pipe structure of a heat pipe heat exchanger for enhancing durability and workability by connecting with a heat pipe and extruding in an integral structure which partitions the heat transfer pipe for transferring heat by heat siphon phenomenon into a heat radiating part and a heat source part without adopting a double pipe type and for greatly economizing in manufacturing cost. To do this, there is provided a heat transfer apparatus comprising a heat source, a heat transfer pipe which is filled up with a heat medium liquid for receiving the heat from the heat source and generating the phase change, and a heat pipe which is communicated with the heat transfer pipe and has a predetermined flow path therein, wherein the heat transfer pipe (10) including: a heat source part (11) having the heat source therein to transfer heat the heat pipe (20); a heat emitting part (12) which has closed both ends and is filled up with the heat medium liquid (30) after vacuuming process, the heating emitting part (12) communicating the heat pipe (20); and an internal partition member (13) for partitioning the heat emitting pipe and the heat source part in a length direction thereof; wherein the heat emitting part and the heat source part including the partition member are integrally extruded by an extruding machine. |