| 摘要 |
<p>It is possible to enable sound, such as music or words, to be caught clearly without raising the sound volume in particular in the use of a mobile terminal device. In a mobile terminal device provided with a speaker on a rear surface side, a sound guiding device that guides sound generated by the speaker in a front direction has a case 20 that covers the speaker 15 when attached to the mobile terminal device 11. A sound guiding section 21 that guides sound generated by the speaker roughly in the front direction and a sounding port 22 through which the guided sound is emitted to the outside are provided at a position of the case corresponding to the speaker of the mobile terminal device when the case is attached to the mobile terminal device.</p> |
