Vacuum heating device and reflector device

摘要

Problem to be solved: to provide a vacuum heating apparatus having a reflector apparatus which does not cause damage due to thermal elongation.The plurality of unit reflector plates 31 arranged in the matrix are attached to the mounting surface 19 of the vacuum vessel 17 by the fixing device 21 and the holding devices 11a to 11d, respectively.When the respective unit reflecting plates 31 are irradiated with infrared rays, the unit reflecting plates 31 are thermally stretched around the mounting positions of the fixing devices 21 with the deformation of the deformation portions 64 of the holding devices 11a to 11d.The force applied to each unit reflecting plate 31 due to the thermal elongation is relaxed, and damage of the unit reflector plate 31 to the mounting surface 19 is prevented.