Imasen Electric Industrial Co., Ltd.

Tetsuo Momo

Yoshio Miyata

Toshihiko Kawamura

Koichi Toyama

Katsunori Uchimura

Junjiro Yoshimura

An electronic horn includes a cover () on a front side of an intermediate element (). A first passage (P) within the horn is defined by a central portion () of the cover () that projects into a cylindrical interior of a cylindrical water-proofing wall (). Second passages (PPP) extend generally concentrically with respect to the first passage (P) and are respectively defined by water-proofing walls () that are formed on the cover () and project into the interior spaces of water-proofing walls (). The outermost second passage (P) opens toward the forward direction. The first and second passages (P-P) extend in a back-and-forth path that prevents any rainwater, which has entered the interior of the horn through the opening of the outermost second passage (P), from reaching a resonance space () defined between the resonator () and a sound-generating oscillator ().

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Nagoya, Japan

Tetsuo Momo