A speaker assembly includes a headrest having a front face facing a forward direction and a back face facing a rearward direction, where the rearward direction is opposite the forward direction, where the headrest is for use with a user's head located forward of the front face of the headrest; a bass dipole speaker mounted to the headrest, where the bass dipole speaker includes a drive unit and a diaphragm, where the diaphragm has a first radiation surface and a second radiation surface, where the first radiation surface and the second radiation surface are located on opposite faces of the diaphragm, where the drive unit is configured to move the diaphragm at a bass frequency, and where the drive unit is configured to move the diaphragm at a bass frequency. The first radiation surface and the second radiation surface generate sound of bass frequency; and a bass waveguide configured to direct bass sound generated by the first radiating surface out of the front face of the headrest via at least one forward opening provided by the bass waveguide, where the bass dipole speaker is mounted to the headrest such that bass sound generated by the second radiating surface can propagate out of the back face of the headrest. The bass dipole speaker is mounted to the headrest such that when the diaphragm is in rest, the first radiating surface of the diaphragm is closer to the back of the headrest than to the front of the headrest. The area of the at least one forward opening is greater than the area of the first radiating surface projected onto a plane perpendicular to the axis of motion of the bass dipole speaker.
扬声器组件,包括:头枕,其具有面向向前方向的正面和面向向后方向的背面,其中,向后方向与向前方向相反,其中,头枕用于与位于头枕的正面的前方的用户头部一起使用;安装至头枕的低音偶极扬声器,其中,低音偶极扬声器包括驱动单元和振膜,其中,振膜具有第一辐射表面和第二辐射表面,其中,第一辐射表面和第二辐射表面位于振膜的相对面上,其中,驱动单元配置为以低音频率移动振膜,使得第一辐射表面和第二辐射表面产生低音频率的声音;低音波导,其配置为经由低音波导提供的至少一个向前开口将由第一辐射表面产生的低音声音从头枕的正面引导出去,其中,低音偶极扬声器安装至头枕,使得由第二辐射表面产生的低音声音能够从头枕的背面传播出去。低音偶极扬声器安装至头枕,使得当振膜处于休止时,振膜的第一辐射表面与到头枕的正面相比更靠近头枕的背面。该至少一个向前开口的面积大于第一辐射表面投影到垂直于低音偶极扬声器的运动轴线的平面上的面积。
Headrest loudspeaker assembly
头枕式扬声器组件
25.06.2024
Patent
Elektronische Ressource
Chinesisch
Acoustic waveguide, loudspeaker assembly, automobile headrest and vehicle
Europäisches Patentamt | 2024
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