| 摘要 |
<p>When a filament (41) of an infrared heater (40) emits electromagnetic waves, an infrared-transmitting exposed surface (36a) of an outer circumferential section (31), said infrared-transmitting exposed surface being exposed to the outside, transmits at least a part of infrared among the electromagnetic waves, and radiates the infrared to the outside. Furthermore, cold wind as a fluid is blown to the outside from first and second nozzles (39a, 39b) of the outer circumferential section (31). At that time, the infrared-transmitting exposed surface (36a) can be indirectly cooled by means of a cooling medium circulating in a cooling medium flow channel (49). The outer circumferential section (31) has a tubular member (36) covering around the infrared heater (40), and at least a part of the tubular member (36) is formed as the infrared-transmitting exposed surface (36a).</p> |
