PROBLEM TO BE SOLVED: To provide a compact electronic alarming horn that has sufficient front directivity and can output an audible alarm.SOLUTION: An electronic alarming horn includes: a piezoelectric material 52 for vibrating a tabular vibrator 51; a resonator 7 in which an opening 71 is provided and that covers a front of the vibrator 51 to form a resonance space S relative to the vibrator 51; an inner cylindrical body 62 and an outer cylindrical body 63 internally and externally provided at a front of the resonator 7; and a circular cover body 8 provided so as to cover them from a front. A buffer chamber BR, a first loudspeaker chamber MH1, and a second loudspeaker chamber MH2 are formed at a whole circumference centering around the opening 71 of the resonator 7 by a barrel wall of the inner cylindrical body 62 and the outer cylindrical body 63, and the cover body 8.SELECTED DRAWING: Figure 1
【課題】前方へ十分な指向性を有して警報音を出力することができかつコンパクトな電子式警音器を提供する。【解決手段】板状振動体51を起振する圧電体52と、開口71が設けられ振動体51の前方を覆って当該振動体51との間に共鳴空間Sを形成する共鳴器7と、共鳴器7の前方に内外に設けた内筒体62および外筒体63と、これらを前方から覆うように設けた円形のカバー体8と、を備え、内筒体62および外筒体63の筒壁とカバー体8によって共鳴器7の開口71を中心に全周に緩衝室BR、第1拡声室MH1および第2拡声室MH2を形成する。【選択図】 図1
ELECTRONIC ALARMING HORN
電子式警音器
2017-11-24
Patent
Elektronische Ressource
Japanisch
IPC: | G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler |