The present invention relates to a drying apparatus for drying air on a tray by circulating air in a drying chamber, the drying apparatus comprising: an upper partition wall formed in an upper portion of a drying chamber where the laundry is dried to form an upper air circulation space； A blowing fan installed at a rear side of the upper partition air circulation chamber for blowing room air to a front air circulation chamber, a drying chamber, and a rear air circulation chamber rearward of the drying chamber through an upper air circulation chamber； An evaporator and a condenser installed between the rear air circulation chamber and the blowing fan； And a near infrared ray generating device installed between the trays on which the laundry is dried and radiating near infrared rays as an object to be dried. In the present invention, by using near-infrared rays, only the dried material can be heated by radiant heat without heating the air to maintain the proper temperature for removing moisture of the dried material, and the temperature of the air introduced into the evaporator is not affected, The drying ability of the drying chamber can be further improved and the internal air naturally produced by the moisture increase in the drying chamber can be discharged to the outside while maintaining a constant pressure to fundamentally block the influx of harmful components, It is possible to solve the inconvenience of infiltration of harmful substances and the need of manpower due to the inflow of outside air due to the opening and closing because it is not necessary to change the position of the dried material in the middle of drying by one-way drying method, It can be used not only in dry but also in low temperature warehouse (3 ~ 8 ℃). .본 발명은 건조실 내부에서 공기를 순환시켜 트레이 상의 피건조물을 건조하는 건조장치에 있어서, 피건조물이 건조되는 건조실 상부에 위치되어 공간구획되는 상부공기순환실을 형성하는 상부격벽； 상기 상부격벽의 상부공기순환실 후방측에 설치되어 실내공기를 상부공기순환실을 거쳐 건조실 전방측인 전방공기순환실과 건조실 및 건조실 후방측인 후방공기순환실로 송풍시키는 송풍팬； 상기 후방공기순환실과 상기 송풍팬 사이에 설치되는 증발기와 응축
