Illumination device having function of cooling light emitting part and control method therefor

An illumination device comprising:

• a light emitting part configured to emit light for illumination;
• a cooling part configured to cool the light emitting part;
• at least one memory;
• and
• at least one processor that executes instructions stored in the at least one memory to:
• acquire a temperature at a first position;
• acquire a temperature at a second position that is less susceptible to a temperature change of the light emitting part than the first position;
• determine presence or absence of light emission of the light emitting part;
• and
• control driving of the cooling part based on the acquired temperature at the first position, the acquired temperature at the second position, and a determination result of the presence or absence of light emission,
• wherein, counting by a light emission counter is started due to light emission of the light emitting part, and it is determined as the presence of light emission in a case where a value of the light emission counter exceeds a predetermined value, and it is determined as the absence of light emission in a case where the value of the light emission counter does not exceed the predetermined value.