PROBLEM TO BE SOLVED: To provide a hair growth promotion device that can satisfy a user more than a conventional one.SOLUTION: A signal generation device 2 includes a low frequency voltage signal generation part 21 operated by a low frequency generation mode for generating a low frequency voltage signal that increases a frequency of a low frequency at predetermined time intervals in a stepwise manner or continuously, and a high frequency voltage signal generation part 22 operated by a high frequency generation mode for generating a high frequency voltage signal of a frequency ten times or more as great as the maximum frequency of the low frequency voltage signal after the completion of the generation of the low frequency voltage signal. The signal generation device 2 uses both the low frequency generation mode for generating the low frequency voltage signal, and the high frequency generation mode for generating the high frequency voltage signal of a frequency ten times or more as great as the maximum frequency of the low frequency voltage signal after the completion of the generation of the low frequency voltage signal.SELECTED DRAWING: Figure 1【課題】従来よりも使用者が満足することができる育毛促進装置を提供する。【解決手段】信号発生装置２は、所定の時間間隔で低周波の周波数を段階的にまたは連続的に増加させる低周波電圧信号を発生する低周波発生モードにより動作する低周波電圧信号発生部２１と、低周波電圧信号の発生を終了した後、低周波電圧信号の最大周波数の１０倍以上の周波数の高周波電圧信号を発生する高周波発生モードで動作する高周波電圧信号発生部２２とを備えている。信号発生装置２は、低周波電圧信号を発生する低周波発生モードと、低周波電圧信号の発生を終了した後、低周波電圧信号の最大周波数の１０倍以上の周波数の高周波電圧信号を発生する高周波発生モードを併用する。【選択図】図１
