| 摘要 |
PURPOSE: A headphone having a maze structure for playing a low pitched tone or special low pitched tone is provided to satisfy a proper resonance value according to a side of the headphone by outputting the rear sound of a speaker unit to the front of the headphone through a duct unit of the maze structure. CONSTITUTION: A headphone(10) comprises a speaker unit(11), a protector(30), an ear pad(40), housing(50), and a duct unit(70). The protector comprises a supporting unit(31) and a plurality of penetration holes(33). The ear pad is combined according to the circumference of the protector. The housing is combined to the rear part of the protector. The housing has a predetermined space unit capable of accepting the duct unit. The housing completely closes the rear part of the protector in order to prevent the leakage of rear sound from the speaker unit. The duct unit comprises an inlet port(71), and a plurality of baffles(73), and a vent(75). |
