| 摘要 |
PROBLEM TO BE SOLVED: To securely listen to sound arriving at a sound collection part by installing an outline part covering a sound collection hole in a sound collection pat fitted to the sound collection hole of a portable telephone set. SOLUTION: A sound collection pad 1 has a side that surrounds the sound collection hole A1 of a portable telephone set A. The outline part 111 has the size positioned on the outer side of the sound collection hole A1 and has a structure which can listen to sound transmitted to the sound collection hole A1 without a leak. A flat part can be installed in the outline part 111. The sound collection pad 1 is constituted of a soft member of vinyl chrolide or silicone rubber and satisfactory contact to an ear and satisfactory listening can be realized. The outline part 111 surrounds the sound collection hole A1 and it is ideal to show sound collection effect. The sound collection pad 1 is selected in accordance with the size and the form of the sound collection hole A1. The size of the sound collection pad 1, the height of a projected line, the width of the projected line and a color are free but sound collection property and adhesion are required to be considered. The sound collection pad 1 can integrally formed with the portable telephone set A at the time of manufacture. |
