The present invention relates to a heater for a medical purpose. The purpose of the present invention is to provide a tunnel type heater, by installing a thermo-element along the circumference of the inner space of the heater, thereby increasing the heat energy efficiency of the inner space by the thermal emission surface area of the thermo-element, and at the same time protecting the skin of a user by the heat absorption surface area of the thermo-element when the temperature of the inner space increases, for improving the radiant efficiency of far-infrared radiation. According to the present invention, provided is a heater which includes a tunnel type hemispherical main body, an insulation part attached to the inner surface of the main body, a thermo-mat installed inside the inner space of the main body, to be positioned at a lower layer of the insulation part, while radiating heat and infrared ray, and a thermo-element installed along the circumference of the thermo-mat. The thermal emission surface area of the thermo-element is in contact with the thermo-mat, and the thermal absorption surface area of the thermo-element is arranged toward the inner space of the main body. When power is applied to the thermo-mat and thermo-element, the inner space is radiated with heat and infrared ray by the thermal emission surface area of the thermo-element and thermo-mat, and the heat and the infrared ray are delivered to the body of a user. At the same time, internal heat on the circumference of the inner space is absorbed by the thermal absorption surface area of the thermo-element, damages to the skin of the user due to the heat of the thermo-heat is prevented, even when the temperature of the thermo-mat increases for maximizing the effect of heat treatment and infrared radiation.COPYRIGHT KIPO 2016본 발명은 의료용 온열기에 관한 것으로, 그 목적은 터널식 의료용 온열기의 내부공간 테두리를 따라 열전소자를 설치하여, 열전소자의 열방출면에 의해 내부공간의 열에너지 효율을 증진시킴과 동시에, 원적외선 방사효율 증대를 위한 내부공간의 온도상승시 열전소자의 열흡수면에 의해 사용자의 피부가 보호될 수 있는 터널형 온열기
