Patent ID: 8243975

Claim:
A condenser microphone unit, comprising: a metallic cylindrical unit case having a front acoustic terminal on one end side; an electrostatic acousto electric converter housed in the unit case; and a shielding member disposed between the acousto-electric converter and the front acoustic terminal to cover the front acoustic terminal from an inside of the unit case, wherein the shielding member includes a shielding plate formed of a metallic porous plate integrally having a plurality of locking pieces, which dig into an inner wall surface of the unit case by elastic deformation, at a peripheral edge part thereof, and the plurality of locking pieces are bent at a predetermined angle from the peripheral edge art of the shielding plate toward a side opposite to the front acoustic terminal so as to contact under pressure with the inner wall surface of the unit case when the shielding plate is inserted into the unit case.