| 摘要 |
<p>A thin bidirectional speaker device, which includes a driving part free from an adverse effect due to heat, is provided. The speaker device includes:
a pair of diaphragms 10 1 , 10 2 disposed opposite each other,
a frame 12 configured to vibratably support an outer periphery of the diaphragm in the vibration direction, and
a plurality of driving parts 14 configured to support the rear surface of the each diaphragm and vibrate the diaphragms in response to an audio signal, and
the driving part includes:
a pair of magnetic circuits 20 1 , 20 2 in which a magnetic gap 20G is formed in a direction different from the vibration direction of the diaphragms,
a pair of voice coils 30 1 , 30 2 vibratably arranged in the magnetic gap in one axis direction, vibrating so as to move toward or away from each other in response to the audio signal and
a rigid vibration direction converter part 50 configured to convert the direction of the vibration of the voice coil and transmit the vibration to the diaphragm, and
the vibration direction converter part 50 has a hinge 52 formed on the side of the pair of diaphragms and on the side of the opposing ends of the pair of voice coils, respectively, and a link part 51 obliquely disposed with respect to the vibration direction of the voice coil, and a plurality of the link parts 51 are symmetrically arranged with respect to two axes of the vibration direction of the voice coil and the vibration direction of the diaphragm.</p> |
