| 摘要 |
A protective sleeve having a built-in sound-amplifying channel is configured to cover a portable electronic product having an audio port. The protective sleeve includes an accommodating portion and a sound-amplifying channel. The accommodating portion is provided in the protective sleeve for allowing the portable electronic product to be accommodated therein. The sound-amplifying channel is formed in the protective sleeve. One end of the sound-amplifying channel is connected to the audio port, and the other end thereof protrudes from the protective sleeve to form a sound-amplifying section. The sound of the portable electronic product is emitted from the audio port and amplified through the sound-amplifying channel and the sound-amplifying section. Thus, an external loud speaker is unnecessary, and the protective sleeve itself can generate a good sound-amplifying effect, thereby increasing the functionality and practicability thereof greatly. |
