The purpose of the present invention is to implement a heating system in a vinyl greenhouse where crops are cultivated without additional external driving force. More particularly, the heating system includes heat pipes (40). The heat pipe (40) has a lower end portion which comes in contact with geothermal heat generated under the ground, and an upper end portion which is joined with one side of a water tank (30) connected to a radiator (20) for heating the inside of the vinyl greenhouse. The heat pipe (40) is enclosed from the outside and comprises: a heat absorption section (41) which absorbs geothermal heat under the ground a heat insulation section (42) which keeps the absorbed geothermal heat and a heat releasing section (43) which releases geothermal heat. The heat absorption section (41) on the lower end portion of the heat pipe (40) and the heat releasing section (43) on the upper end portion of the heat pipe (40) are made of copper pipes (41a)(43a). A center portion is made of a flexible synthetic resin pipe (42a) with an insulation material (42b) joined to the outside thereof. The flexible synthetic resin pipe (42a) and the copper pipes (41a)(43a) are connected to each other by epoxy molding (44) to maintain air-tightness. Porous wicks (50) having hollow parts are formed on only the insides of the copper pipe (41a)(43a). Operation fluid (60) is contained in the heat pipe (40) so that the inside of the vinyl greenhouse can be heated by using geothermal heat without power. In case of power failure, a hot air fan (80) is operated by power, charged by a photovoltaic power generation unit, to heat the inside of the vinyl greenhouse (10).COPYRIGHT KIPO 2016본 발명은 농작물을 재배하는 비닐하우스 시설 내의 난방을 외부 원동력이 별도로 필요없이 구축한 것으로써 구체적인 구성은 지하에서 발생하는 지열과 하단부측이 접촉하고, 상단부측은 비닐하우스(10) 내부를 난방하는 라디에이터(20)와 연결된 수조(30)의 일측면과 결합되는 외부와 밀폐된 히트파이프(40)는 지하에서 지열을 흡수하는 열흡수구간(41)과, 흡수된 지열을 단열하는 단열구간(42) 및 지열을 배출하는 열배출구간(43)으로 형성되되,상기 히트파이프(40)의 하단부측과 상단부측인 열흡수구간(41)과 열배출구간(43)은 구리관(41a)(43a)으로 형
