Patent ID: 9729962
Date: 2017-08-08
CPC Classifications: H04R

Claim:
1. An external stereo microphone device attached to a mobile electronic device, comprising: a pair of symmetrically-positioned microphones; a holder unit including a pair of holders symmetrically positioned in order to accommodate the pair of microphones respectively and a joint for joining the pair of holders together, the holders forming outer circumferential edges; a case having a cylindrical portion that rotatably supports the holder unit and a revolving body rotatably coupled to the joint, the revolving body receiving pressure from the inner circumferential surface of the case, wherein the joint is a substantially-plate-shaped region that joins the outer circumferential edges of the holders together and that has an outer circumferential surface assuming a circular-arc shape, a center angle of the circular arc shape being 180 degrees or less, and a circumferential width which is one-half or less of an entire circumference of the holder unit.