| 摘要 |
PURPOSE: An electronic whistle is provided to improve convenience by effectively and repetitively transferring whistle sounds to a person. CONSTITUTION: An electronic whistle(1) comprises a terminal(10), an operation button(20), a controller, and a speaker(40). The terminal has a battery and is worn on the fingers of a user. AN elastic band(80) or a cylindrical clip(81) is installed on the rear surface of the terminal. The operation button is installed on the top of the terminal. When the operation button is pressed, power is applied to the operation button through the battery. The controller generates whistle sounds by receiving a signal from the operation button and receives signals from a sound conversion switch and a volume adjusting switch. The speaker sounds the whistle sounds.
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