Library of mobile phone is a double wall structure

摘要

A mobile device storage box having a double outer wall structure is provided. The present invention provides a mobile device storage box having a double wall structure provided with a space for storing a mobile device, a heat dissipating hole formed on both side walls of a housing space opened frontward on the inside thereof, and first spacing protrusions A plurality of supporting pieces protruding from the bottom of the receiving space, a step formed on the outer surface of the inlet side of the receiving space, a connecting protrusion provided on one side of the step, An inner housing formed with a groove; An outer housing provided to enclose the inner housing in a state of being spaced apart from the inner housing by a predetermined distance and a hinge protrusion formed on one side of the outer housing so as to be able to open and close the housing space, And the opening / closing door is provided so as to maintain a comfortable use environment and to improve the assemblability of the product.