| 摘要 |
A headphone having a movable air outlet valve, comprising a casing (1); the casing (1) has an headphone rear cavity (4) for accommodating a speaker unit (2); the speaker (2) is arranged in the headphone rear cavity (4) and is fixedly connected to the casing (1); one side of the casing (1) facing the human ear is connected to an ear pad (3); the headphone is provided with an air outlet on the headphone casing (1) between the headphone rear cavity (4) and a headphone sound chamber (6); the air outlet is provided with a movable air outlet valve thereon automatically enabling venting due to increase in air pressure. Therefore, when a person wears or transports the headphone, an instantaneous air pressure wave generated in the sound chamber is discharged by the movable air outlet valve; in addition, because a vibrating diaphragm then has less airflow interference during operation, the headphone has a relatively high degree of sound purity and good listening feel compared with headphones only having an air outlet hole instead of a movable valve. |
