Outer cover structure capable of increasing sound decibel of sound and light alarm

Abstract

The invention discloses an outer cover structure capable of increasing a sound decibel of a sound and light alarm. The outer cover structure comprises a hollow cover which sleeves an external portion of a sound resonance cavity mechanism in the sound and light alarm, sound lines, a cover body and lead benches. An upper surface of the hollow cover is recessed from outside to inside, and a central section of the upper surface of the hollow cover is provided with an opening used for exposing a resonance cavity in the sound resonance cavity mechanism. The lead benches encircle a periphery of the cover body and the cover body is fixed right above the opening so that the resonance cavity, the cover body and the lead benches form one cavity used for realizing secondary amplification of a resonance sound. Simultaneously, one output port used for outputting a secondary resonance sound is formed between each two lead benches. The sound lines encircle the periphery of the cover body. One end of the sound lines is connected to the cover body and the other end is fixed to a recessed portion of the upper surface of the hollow cover. The design is clever, the structure is simple, cost is low, a decibel of an alarm sound is greatly enhanced and a demand of an actual industrial application is well satisfied.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to an outer cover structure capable of increasing the sound decibel of an acousto-optic alarm. Background technique [0002] The sound and light alarm is set to meet the special requirements of the user for the alarm loudness and installation location. It can send out both sound and light alarm signals at the same time. At present, the sound and light alarm is mainly used in iron and steel metallurgy, telecommunication towers, and hoisting machinery. , construction machinery, port terminals, transportation, wind power generation, ocean-going ships and other industries, it is an important accessory product in the industrial alarm system. [0003] For existing sound and light alarms, in order to meet the sound decibel level of the national standard, some manufacturers will use components on the hardware to improve the driving ability of the sound. However, such a design will n...

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Problems solved by technology

[0003] For existing sound and light alarms, in order to meet the sound decibel level of the national standard, some manufacturers will use components on the hardware to improve the driving ability of the sound. However, such a design will not only increase the power of the entire circuit of the sound and light alarm, but also increase the The power consumption of the sound driver, and in actual industrial applications, due to the different installation environments and the influence of external sounds, the alarm sound decibel of the sound and light alarm will also be affected to a certain extent, and the sound effect is not good, which makes it unable to meet the requirements. Practical application, can not achieve the intended alarm effect

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