LOUDSPEAKER

PROBLEM TO BE SOLVED: To provide a loudspeaker capable of solving the problem that sounds emitted from a back surface of a speaker driver to the inside of a speaker box must be more efficiently removed. SOLUTION: The loudspeaker includes: a speaker box attached with a speaker driver; an opening port...

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Bibliographische Detailangaben
1. Verfasser:	NAKAMICHI NIRO
Format:	Patent
Sprache:	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:	PROBLEM TO BE SOLVED: To provide a loudspeaker capable of solving the problem that sounds emitted from a back surface of a speaker driver to the inside of a speaker box must be more efficiently removed. SOLUTION: The loudspeaker includes: a speaker box attached with a speaker driver; an opening portion provided on the speaker box and emitting a sound pressure generated by a diaphragm of the speaker driver to the outside of the speaker box; a reduced-diameter portion arranged on the rear side of the diaphragm and having a small cross sectional area in a direction orthogonal direction away from the diaphragm; and a bulging portion provided between the reduced-diameter portion and the opening portion and having a large cross sectional area in a direction orthogonal to the direction away from the diaphragm. COPYRIGHT: (C)2010,JPO&INPIT