Open type earphone

The utility model relates to an open type earphone comprising a housing, a cavity is arranged in the housing, a loudspeaker is arranged in the cavity, and the loudspeaker divides the cavity into a front cavity and a rear cavity; the shell is provided with a first sound outlet hole and a second sound...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SHEN XIAOBIN, LAI SHAOBING, CHEN JIABAO, HE HUI, WANG YONG, LI YAFAN, WAN SHENFA, HE QIAN, CHEN ZHUOQI, YI JIAQUAN, FENG NAN, WANG YUNFENG, MAI ZHAOQUAN, BAO LEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	The utility model relates to an open type earphone comprising a housing, a cavity is arranged in the housing, a loudspeaker is arranged in the cavity, and the loudspeaker divides the cavity into a front cavity and a rear cavity; the shell is provided with a first sound outlet hole and a second sound outlet hole, the front cavity is communicated with the outside through the first sound outlet hole, and the rear cavity is communicated with the outside through the second sound outlet hole; the rear cavity comprises a first sound reduction cavity and a second sound reduction cavity communicated with the first sound reduction cavity, and the first sound reduction cavity is located between the loudspeaker and the second sound reduction cavity. Sound waves which move backwards and are generated by the loudspeaker are reduced by the first sound reduction cavity and the second sound reduction cavity and then are transmitted to the outside from the second sound outlet hole, so that the sound waves which move backwards