(57) A vacuum cleaner includes an electric motor for driving a rotational brush for brushing
dust particles from a surface to be cleaned, an electric blower for generating a suction
air stream for sucking in the dust particles, a dust chamber for collecting the dust
particles therein, a motor controller for controlling the electric motor, an input
controller for controlling the electric blower, a current detector for detecting a
current flowing through the motor controller, and a temperature detector for detecting
a temperature of the electric motor. If the temperature of the electric motor increases
over a predetermined temperature value, the electric motor is stopped and the stoppage
of the electric motor is detected by the current detector.
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