Broadband composite sound insulation structure

The broadband composite sound insulation structure comprises a first sound insulation mechanism and a second sound insulation mechanism, the first sound insulation mechanism and the second sound insulation mechanism are oppositely arranged, and a closed air layer is formed between the first sound insulation mechanism and the second sound insulation mechanism. According to the broadband composite sound insulation structure, the first sound insulation mechanism, the second sound insulation mechanism and the air layer are arranged, so that broadband noise such as high-frequency noise, intermediate-frequency noise and low-frequency noise can be effectively reduced and inhibited. And by arranging the first sound insulation plate and the second sound insulation plate, noise can be reduced, and meanwhile pollution of the external environment to the first sound insulation layer and the second sound insulation layer is reduced. 本发明公开一种宽频复合隔声结构，包括第一隔声机构和第二隔声机构，所述第一隔声机构与所述第二隔声机构相对设置并在两者之间形成有封闭的空气层。本发明的宽频复合隔声结构通过第一隔声机构、第