1. An image heating apparatus comprising:
a rotatable cylindrical belt;
a heater, provided inside said belt, configured to heat said belt; and
an overheating preventing element, including a circuit which is opened when an abnormal temperature rise occurs, configured
to interrupt electrical power supply to said heater,
wherein said overheating preventing element is provided at a position, inside said belt, where said overheating preventing
element is free from direct heat radiation emitted from said heater.