Patent ID: 6577743
Filing Date: 2003-06-10
Classification: H04R

Abstract:
An electroacoustic transducer to be mounted on a board of a device, comprising:a case comprising a cylindrical portion with a lower end; an anode conductive part disposed in said case and which is to be in press contact with the board of the device, wherein a forward end portion of the anode conductive part protrudes by a small distance from the lower end of the cylindrical portion of the case; and a cathode conductive part which is to be in press contact with the board of the device, wherein said anode conductive part and said cathode conductive part are respectively placed at an axial center position or at predetermined positions in a radial direction to eliminate directionality in a circumferential direction, wherein said anode conductive part and said cathode conductive part are substantially ring-shaped and are concentric with each other, and further wherein said anode conductive part and said cathode conductive part are projected toward said board.