Protective hood with negative pressure of air curtain

The protective hood comprises a hood body, a space for containing the head of a patient is formed in the hood body, an annular opening for the head of the patient to go in and out is formed in the lower end of the hood body, the lower end face of the hood body is connected with an air curtain mechanism, and the front end of the air curtain mechanism surrounds the annular opening and is located in the hood body. The upper end face of the hood body is connected with a negative pressure mechanism, the front end of the negative pressure mechanism is communicated with the interior of the hood body, the interior of the negative pressure mechanism is connected with a filtering structure for filtering gas exhaled by a patient, and the problem that an existing patient infected with respiratory diseases is difficult to transfer or move is solved. 本实用新型公开了一种气幕负压的防护头罩，包括头罩本体，头罩本体内部设有容纳病人头部的空间并且下端设有供病人头部进出的环形开口，头罩本体的下端面连接有气幕机构，气幕机构的前端环绕环形开口并且位于头罩本体的内部，头罩本体的上端面连接有负压机构，负压机构的前端与头罩本体的内部连通，负压机构内部连接有过滤病人呼出气体的过滤结构，解决了现有感染呼吸道疾病的病