| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve such a problem that the life of a conventional ordinary temperature low humidity housing is short because a circulating fan is used in the low humidity housing and there is a defect generating noise. SOLUTION: A drying unit wherein a desiccant and a heating means for regenerating the desiccant are mounted in a cabinet, a changeover means for changing over the drying unit to either one of the inside and outside of the cabinet to allow the same to communicate with either one of them and a rising air stream forming means are arranged in the low humidity housing. The drying unit has a through-hole extending up and down. The rising air stream forming means has a heating source arranged on the straight line passing through the through-hole up and down. The heating source merely comprises a heating body or comprises one heating plate or comprises two plates mutually provided side by side in a lateral direction so as to form an opening surface almost coinciding with the transverse section of the through-hole and the heating element held between two plates.</p> |
