Patent ID: 11962963
Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. An earbud comprising:
a speaker unit which generates a sound wave;
a first housing which houses the speaker unit, and has a first opening which faces a sound wave generation surface of the speaker unit;
a second housing which has a second opening and a third opening and houses a control circuit for controlling driving of the speaker unit and a battery for supplying electric power for driving the speaker unit;
a sound conduit having one end connected to the first opening;
an ear plug which is attached to the other end of the sound conduit, the ear plug being inserted into the ear canal; and
an air conduit having one end disposed in a space between the sound wave generation surface and the first opening in the first housing and the other end connected to the second opening, the air conduit being configured to penetrate the first housing.