A speaker device comprising: a diaphragm; a frame supporting the diaphragm vibratably along a vibration direction; and a driving part disposed in proximity of the frame and vibrating the diaphragm corresponding to an audio signal, wherein the driving part includes: a magnetic circuit having a magnetic gap formed along a direction different from the vibration direction of the diaphragm; a voice coil supporting part having a voice coil and vibrating along the magnetic gap; and a vibration-direction-conversion part direction-converting the vibration of the voice coil supporting part and transmitting the vibration to the diaphragm, wherein the vibration-direction-conversion part includes a link body angle-converting link part formed between the voice coil supporting part and the diaphragm; wherein the link body angle-converting link part performs a link body angle conversion with a reaction force from a stationary part disposed opposite to the diaphragm side; and wherein the vibration-direction-conversion part includes: a first link part having a hinge part to the voice coil supporting part at one end and a hinge part to the diaphragm at the other end; characterized in that the vibration-direction-conversion part further includes a second link part having a hinge part to a middle portion of the first link part at one end and a hinge part to the frame at the other end, wherein the first link part and the second link part are obliquely arranged in different directions with respect to the vibration direction of the voice coil supporting part. a diaphragm; a frame supporting the diaphragm vibratably along a vibration direction; and a driving part disposed in proximity of the frame and vibrating the diaphragm corresponding to an audio signal, wherein the driving part includes: a magnetic circuit having a magnetic gap formed along a direction different from the vibration direction of the diaphragm; a voice coil supporting part having a voice coil and vibrating along the magnetic gap; and a vibration-direction-conversion part direction-converting the vibration of the voice coil supporting part and transmitting the vibration to the diaphragm, wherein the vibration-direction-conversion part includes a link body angle-converting link part formed between the voice coil supporting part and the diaphragm; wherein the link body angle-converting link part performs a link body angle conversion with a reaction force from a stationary part disposed opposite to the diaphragm side; and wherein the vibration-direction-conversion part includes: a first link part having a hinge part to the voice coil supporting part at one end and a hinge part to the diaphragm at the other end; characterized in that the vibration-direction-conversion part further includes a second link part having a hinge part to a middle portion of the first link part at one end and a hinge part to the frame at the other end, wherein the first link part and the second link part are obliquely arranged in different directions with respect to the vibration direction of the voice coil supporting part. a magnetic circuit having a magnetic gap formed along a direction different from the vibration direction of the diaphragm; a voice coil supporting part having a voice coil and vibrating along the magnetic gap; and a vibration-direction-conversion part direction-converting the vibration of the voice coil supporting part and transmitting the vibration to the diaphragm, wherein the vibration-direction-conversion part includes a link body angle-converting link part formed between the voice coil supporting part and the diaphragm; wherein the link body angle-converting link part performs a link body angle conversion with a reaction force from a stationary part disposed opposite to the diaphragm side; and wherein the vibration-direction-conversion part includes: a first link part having a hinge part to the voice coil supporting part at one end and a hinge part to the diaphragm at the other end; characterized in that the vibration-direction-conversion part further includes a second link part having a hinge part to a middle portion of the first link part at one end and a hinge part to the frame at the other end, wherein the first link part and the second link part are obliquely arranged in different directions with respect to the vibration direction of the voice coil supporting part. a first link part having a hinge part to the voice coil supporting part at one end and a hinge part to the diaphragm at the other end; characterized in that the vibration-direction-conversion part further includes a second link part having a hinge part to a middle portion of the first link part at one end and a hinge part to the frame at the other end, wherein the first link part and the second link part are obliquely arranged in different directions with respect to the vibration direction of the voice coil supporting part.