Patent ID: 8447060

Claim:
An earphone comprising: a trumpet unit being utilized to transmit sound wave outward; a hollow shield further comprising an upper shield portion and a lower shield portion, wherein the lower shield portion is joined to the upper shield portion to receive the trumpet unit, and there is a sound chamber disposed in the lower shield portion facing the trumpet unit; a guide sound tube with an opening extending outward the lower shield portion, inclining an acute angle denoted by θ with respect to the trumpet unit, and communicating with the sound chamber; an ear cushion being detachably joined to the guide sound tube with an inclination to the guide sound tube; wherein, the ear cushion is plugged to an ear canal to admit the sound wave into the ear canal and block foreign noise, the shield is inserted in an ear nest next to the ear canal to locate and support the earphone, and the sound wave enters the ear canal straight along the ear cushion via the sound chamber and the guide sound tube.