PROBLEM TO BE SOLVED: To provide a speaker device which can concentrate or diffuse acoustic waves generated by a speaker part, while being capable of more reliably preventing the damage of the speaker part.SOLUTION: A curvature of a reflection surface 41 of a reflector plate 4 for reflecting acoustic waves A from a speaker part 3 is configured to increase gradually from an upper end side toward a lower end side. The acoustic waves A reflected at positions on the reflection surface 41 can be made horizontal and parallel to one another, thereby concentrated in a vertical direction. Front end portions of louvers 5 for reflecting the acoustic waves A that have been reflected on the reflector plate 4 are made into arcuate arc face parts 51, and the louvers are attached in parallel to one another with an inclination of 45°. The acoustic waves A are reflected on upper faces of the louvers 5 so that they are changed into an upward direction, and then reflected on lower faces of the louvers 5 so that they are changed into a horizontal direction. With the arc face parts 51 of the louvers 5, propagation distances of the acoustic waves A reflected at positions on the surfaces of the louvers 5 can be adjusted to be equal to one another and can be concentrated in a lateral direction.COPYRIGHT: (C)2012,JPO&INPIT【課題】スピーカ部の損傷をより確実に防止できつつ、スピーカ部から発生させる音波を集中または拡散できるスピーカ装置を提供する。【解決手段】スピーカ部3からの音波Aを反射させる反射板4の反射面41の曲率を上端側から下端側に向けて徐々に大きくした。反射面41の各位置で反射する音波Aを水平方向かつ平行にでき上下方向に集中できる。反射板4にて反射した音波Aを反射させるルーバ5の前端部を円弧状の円弧面部51とし45°傾斜させて平行に取り付けた。音波Aをルーバ5の上面で反射して上方に変換してから、ルーバ5の下面で反射して水平方向に変換する。ルーバ5の円弧面部51によって、ルーバ5の表面で反射される際の各位置の音波Aの伝搬距離を同一に調整でき横方向に集中できる。【選択図】図1
