Patent ID: 11934087
Assignee: CASIO COMPUTER CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A projector comprising:
a cooling fan; and
a processor,
wherein the processor determines a current revolution speed mode of the cooling fan and in a case in which the current revolution speed mode of the cooling fan is determined to be a first revolution speed mode, the processor determines whether an obtained temperature detection value has reached a first threshold, and in a case in which the obtained temperature detection value has reached the first threshold, the processor executes, (i) a control of switching an operation mode of the cooling fan to a second revolution speed mode whose revolution speed is faster than that of the first revolution speed mode, and in a case in which the current revolution speed mode of the cooling fan is determined to be the second revolution speed mode, the processor determines whether an obtained temperature detection value decreases below a second threshold which differs from the first threshold, and in a case in which the obtained temperature detection value decreases below the second threshold, the processor executes (ii) a control of switching the operation mode of the cooling fan to the first revolution speed mode whose revolution speed is slower than that of the second revolution speed mode.