Mobile device e.g. hearing aid, has opening through which liquid having capillary effect is penetrated into mobile device from outside, while diameter of gap is small

摘要

The mobile device an inner portion (1) that is provided for enclosing the outer case (2,3) with an opening (4). A gap (5) is formed between the outer cases and inner portion. The diameter (8) of gap is set small so that liquid (7) having capillary effect is penetrated into mobile device from the outside through the opening. The gap is provided with a cavity (6) whose diameter (9) is set larger to reduce the capillary effect. The cavity is provided with liquid-repellant coating.