SPEAKER DEVICE

• Main Authors: FUKUSE YOSHIAKI, MURAI KEIICHI
• Format: Patent
• Language: English; Japanese
• Published: 01.11.2021
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

To improve the absorption efficiency of sound waves radiated from the back of a speaker unit such that faithful sound can be reproduced from the speaker unit as much as possible.SOLUTION: A speaker device includes an enclosure 1, a speaker unit 10, and a sound absorbing member, and includes a tower-shaped body 20 having a base end attached to the enclosure 1 and having a tapered tip as the sound absorbing member, and the tower-shaped body 20 is divided into a plurality of parts along the axis P connecting the base end and the tip end, and the side surface 21 of each of the divided bodies T (T1, T2, ..., and Tn) is formed on an inclined surface that spreads toward the base end side from the tip end side. Further, as the sound absorbing member, in addition to the tower-shaped body 20, a porous filler 30 to be filled in an internal space e is provided, and the density of the filler 30 is set to increase as the distance from the speaker unit increases.SELECTED DRAWING: Figure 5 【課題】 スピーカユニットの背面から輻射される音波の吸収効率の向上を図り、可能な限りスピーカユニットから忠実な音を再現できるようにする。【解決手段】 エンクロージャ１と、スピーカユニット１０と、吸音部材とを備え、吸音部材として、基端がエンクロージャ１に取付けられ先端先細りに形成された塔状体２０を備え、塔状体２０を、その基端と先端とを結ぶ軸線Ｐに沿って複数に分割し、この分割された分割体Ｔ（Ｔ１，Ｔ２・・・Ｔｎ）の側面２１を、夫々、先端側から基端側に向けて末広がりの傾斜面に形成した。また、吸音部材として、塔状体２０の他に、内部空間ｅに充填される多孔質の充填材３０を設けるとともに、充填材３０の密度をスピーカユニットから遠ざかるに従って大きく設定した。【選択図】 図５