MOBILE COMMUNICATION TERMINAL AND ELECTRO-ACOUSTIC TRANSDUCER USED FOR THE SAME

摘要

A mobile communication terminal has an electro-acoustic transducer (hereinafter referred to as transducer) having an opening in its casing. The opening of the transducer is coupled to a sound tube integrally provided to the casing of the mobile communication terminal or the casing of the transducer. The opening of the sound tube faces to the opening made in the casing of the mobile communication terminal. A mobile communication terminal of another mode has a transducer having a cover and a frame secured to the periphery of a sound vibrator at the front and back faces of the sound vibrator and further having at least two openings. Such a mobile communication terminal and such an electro-acoustic transducer can radiate a high-sound pressure output even though they consume small power and are small in size. When the terminal is used, natural sound is radiated such that the display part agrees with the direction.