| 摘要 |
PURPOSE:To change brightness of illumination naturally, by outputting a driving signal to an inverter drive circuit or a transformer, based on a data series in which a power spectrum is in proportion to inverse number of a frequency. CONSTITUTION:Brightness in a bath room is adjusted by operating an illuminator operation switch 14 and a brightness adjusting switch. On the other hand, a pump driving switch 16, as well as a pump discharge quantity control switch 17, are operated, to adjust a bubble mixture flow, which is discharged into a bath tub. Since a random signal 18 which generates a fluctuation signal, whose frequency is in reverse proportion to the frequency of the power spectral of an illuminator A, is connected to a control device C, brightness fluctuation of the illuminator A is thus controlled through an inverter drive circuit 20. |
