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发明公开
CN103357125A 呼吸防护面罩 无效 - 驳回 复审申请

呼吸防护面罩
摘要：
本发明涉及一种呼吸防护面罩，其带有：面罩体，其可构造成以便遮盖佩戴者的面部；以及在面罩体中的开口，其由通话膜(8)来气密地封闭，其特征在于，在面罩体的内部空间中在通话膜前方布置有朝向通话膜的、带有在20°与90°之间的范围内的开口角度的喇叭件(4)，以便将声波聚集到通话膜上。
摘要（英）：

A gas mask is provided with a mask body, which is designed to cover the face of a user, and with an opening in the mask body, which is closed by a speech diaphragm (8) in a gas-tight manner. A funnel (4) is directed toward the speech diaphragm with an opening angle in the range of 20 DEG to 90 DEG. The funnel (4) is arranged in front of the speech diaphragm in the interior space of the mask body in order to focus sound waves onto the speech diaphragm.

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