PORTABLE INSTRUMENT CASE HAVING MUSIC BOOK HOUSING

PURPOSE: A portable instrument case is provided to allow a user to conveniently use the portable instrument case by forming a music book housing, and to adjust humidity in the portable instrument case. CONSTITUTION: A portable instrument case includes a body section(10), a cover section(20) and an inner cover section(30). The body section(10) has a body made of synthetic material, reinforcement members, and a fabric. A damping member(110) is provided between the reinforcement members and the fabric. A hygrometer(16) is formed at one reinforcement member in order to measure and display humidity in the portable instrument case. The cover section(20) covers the body section(10). The cover section(20) includes an outer skin and an inner skin, and reinforcement material formed between the outer skin and the inner skin. The inner cover section(30) rotatably coupled to the body section(10) by means of a hinge(120). A housing is formed in the inner cover section(30) in order to receive a music book therein. A humidifier(36) is provided in the inner cover section(30) in order to spray moisture when humidity in the portable instrument case is lowered below a reference level.