公开(公告)号：US20220248119A1

公开(公告)日：2022-08-04

申请号：US17535709

申请日：2021-11-26

Applicant: SHENZHEN DASHI SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Haoqian Li ,  Jiang Chen

IPC: H04R1/10

Abstract: A sound privacy protection device is provided, including: a wearable structure configured to be worn at an ear; and a mount structure connected to the wearable structure, where the mount structure is provided with at least one sound generating unit; the mount structure is provided with at least one front vent for guiding the sound generating unit; and an acoustic outlet end of the front vent is arranged close to an ear canal entrance point (EEP). According to the present invention, the front vent and the reverse vent are both arranged on the mount structure, and the front vent and the reverse vent are positioned at the set points through the wearable structure, such that the sound waves of the reverse vent and the front vent cancel each other out in the afar sound fields, thereby achieving the purpose of sound elimination, preventing the surroundings from hearing the sound emitted by the device and protecting privacy.