Patent ID: 7054458

Claim:
A microphone unit comprising: a microphone having an outer circumferential surface substantially cylinder-shaped; and a rubber holder for holding the microphone while substantially cylindrically covering the microphone; wherein the microphone comprises a substantially cylindrical metal casing, a microphone body received in the casing, a ground terminal constituted by the casing and a plus terminal disposed in a lower end surface of the microphone body; and the holder comprises a bottom wall portion extending from a lower end portion of the holder to a lower end surface of the microphone, the bottom wall portion having a first electrically conductive portion constituted by at least one pan of an outer circumferential edge portion of the bottom wall portion and made of electrically conductive rubber so as to be electrically connected to the ground terminal, and a second electrically conductive portion constituted by a predetermined region of the bottom wall portion distant from the first electrically conductive portion toward an inner circumferential side and made of electrically conductive rubber so as to be electrically connected to the plus terminal.