US Patent 9258397 Protective case with speaker sound amplification path

A protective case having a speaker sound amplification path and an electronic device including at least one speaker device are disclosed. The protective case includes a base surface placed adjacent to at least one side of the electronic device to protect the electronic device, at least one speaker sound amplification path formed in the base surface and having a specific depth including a first location corresponding to a speaker hole of the electronic device to output a speaker sound of the speaker device, and a speaker sound output hole at a second location extended from the speaker sound amplification path and formed to an outer side of the protective case in an open manner, wherein the speaker sound output from the speaker hole is amplified within the speaker sound amplification path and is then output through the speaker sound output hole.