Emergency power generation sound box

Abstract

The invention discloses an emergency power generation sound box, which comprises a surface shell, an aluminum cylinder and a bottom shell. The surface shell is arranged at the left end of the aluminumcylinder. The sound box is simple and reasonable in structural design, convenient and fast in usage, and high in practicality. During working, the power generation handle drives the generator to rotate to generate power. When the sound box is not in use, the electric power can be converted and stored in the battery. The sound box is environment-friendly and energy-saving, and the embarrassment that the charger cannot be used when no place is available outdoors for charging is avoided. Therefore, the device is wider in application range, and more interestingness. Under the action of the powergeneration handle base, the structure is more stable, then the device can be started and stopped through the key, the loudspeaker is controlled to work, operation is easy and convenient. Under the action of the anti-skid pad, the device is stable and resistant to skid, product information and an operation method are conveniently introduced through the sticker, and the device is small and exquisitein structure, attractive in appearance, convenient to carry and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of sound boxes, in particular to an emergency power generation sound box. Background technique [0002] A speaker refers to a device that converts an audio signal into sound. In layman's terms, it refers to the built-in power amplifier in the main box of the speaker or the subwoofer box. After the audio signal is amplified, the sound is played back by the speaker itself to make the sound louder; the home speaker is generally used for home playback, and its characteristics The playback sound quality is delicate and soft, the appearance is more delicate and beautiful, the playback sound pressure level is not too high, and the power it withstands is relatively small. Professional speakers are generally used in professional entertainment venues such as dance halls, karaoke, theaters, auditoriums and stadiums. Generally, professional speakers have high sensitivity, high playback sound pressure, good power, and ...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing speakers generally use ordinary dry batteries, which are wasteful and not environmentally friendly, and those using mains or rechargeable batteries are difficult to supply power outdoors, resulting in unusable, large volume, unattractive appearance, and poor interest.

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