To realize an air guide of a radio-frequency heating apparatus that enables fixing
of a lamp without use of a vis though it is made of a metal plate material. An
air guide 9 made of a metal plate material is formed with two inverted-L-shaped
nails 15. A holding portion 13 of a lamp 12 is hooked on the
nails 15 and a waveguide holding plate 19 is brought into contact
with an opposed surface of the holding portion 13 of the lamp 12.
As a result, the lamp 12 can be fixed without using a vis and hence a step
of fixing the lamp 12 with a vis can be eliminated. An inexpensive configuration
can be realized that is free of fear that a disconnection may occur in a filament
due to vibration.
