Provided is a search result providing system and method for providing a loan word pronunciation service. The lighting and surge protection circuitry also includes a diode pair coupled between an output of the functional circuit being protected and power and ground terminals and a small resistance in series with the output of the functional circuit. The power management unit determines a number of cleaning functions available to the vacuum cleaner among the plurality of cleaning functions based on the received power information, and a display unit displays the number of the cleaning functions determined by the power management unit to be available to the vacuum cleaner. In this case, since a large current flows into the coil, a coil having small impedance is used. At the central portion of an incident surface 1 in a longitudinal direction, a projecting portion obtained by cutting an overhang portion 7 at a position a distance D apart from the incident surface 1 is formed.