Electroacoustic transducer

An electroacoustic transducer comprising:

• a piezoelectric speaker having:
• a first vibration plate with a periphery;
• and
• a piezoelectric element placed on at least one face of the first vibration plate, wherein a planar shape of the piezoelectric element is rectangular, and an opening is provided in a manner penetrating through the first vibration plate and the piezoelectric element as viewed in a thickness direction of the first vibration plate that is a first axis direction;
• and
• a housing having:
• a supporting part that supports the periphery;
• a support member fixed to the supporting part and having a support face for supporting the periphery of the first vibration plate, wherein the support member is constituted by a material whose Young's modulus is 3 GPa or more;
• and
• a sound introduction port facing the piezoelectric speaker in the first axis direction, and provided at a position where the sound introducing port does not substantially overlap the opening in the first axis direction,
• wherein additional openings are provided around the piezoelectric element and penetrate through the first vibration plate as viewed in the first axis direction, wherein the openings are partially covered by a periphery of the piezoelectric element.

An electroacoustic transducer comprising:

• a piezoelectric speaker having:
• a first vibration plate with a periphery;
• and
• a piezoelectric element placed on at least one face of the first vibration plate,
• wherein multiple openings are provided around the piezoelectric element and penetrate through the first vibration plate as viewed in a thickness direction of the first vibration plate that is a first axis direction;
• and
• a housing having:
• a supporting part that supports the periphery of the first vibration plate;
• a support member fixed to the supporting part and having a support face for supporting the periphery of the first vibration plate, wherein the support member is constituted by a material whose Young's modulus is 3 GPa or more;
• and
• a sound introduction port facing the piezoelectric speaker in the first axis direction, and provided at a position where the sound introduction port does not substantially overlap, as viewed in the first axis direction, a first opening having the largest open area among the multiple openings,
• wherein the support member further has a first ring-shaped piece which projects upward in the first axis direction along an outer periphery of the support face in a manner surrounding the periphery of the first vibration plate as viewed in the first axis direction and a direction perpendicular to the first axis direction.