Loudspeaking device for tunnel

Abstract

The invention discloses a loudspeaking device for a tunnel. The device comprises a fixed part, a base and a sound amplification part connected with the base in a matched mode, the bottom face of the fixed part is fixedly connected with the top face of the base, the fixed part is arranged in the mode of extending to the left end and the right end of the base, fixed holes are formed in the left and right extension ends of the fixed part, bolts are arranged in the fixed part, a first sliding connecting groove is formed in the midpoint inside the base, a second sliding connecting groove is formed in the lower portion of the bottom side of the first sliding connecting groove, an electrical connection hole is formed in the portion, on the upper portion of the top end of the first sliding connecting groove, of the inner top wall of the base, first sliding connecting grooves are formed in the portions, at the two sides of the first sliding connecting groove, of the inner sidewall of the base, an abutting block is connected into the first sliding connecting groove in a sliding and matched mode, an electrical connection part arranged to be opposite to the electrical connection hole is arranged at the top end of the abutting block, and a first elastic part is arranged at the top end of the abutting block inside the first sliding connecting groove. The loudspeaking device is simple in structure, convenient to install and high in stability after installation, an accident electric shock is prevented, and the maintenance efficiency and user safety are improved.

Description

technical field [0001] The invention relates to the technical field of speakers, in particular to a speaker device for tunnels. Background technique [0002] Loudspeaker equipment is widely used in tunnels. It is mainly used to remind passing vehicles to drive safely before traffic accidents or maintenance in tunnels. The existing loudspeaker equipment is basically integrated with its fixed and loudspeaker parts. It is directly installed on the top wall of the tunnel through a threaded structure. When overhaul and maintenance are required, the speaker part and the fixed part need to be removed together with a screwdriver and other tools. The operation takes a long time and the work efficiency is low. Moreover, the traditional speaker The power connection part of the equipment is often exposed to the outside world, which is easy to cause the installation personnel to touch it by mistake, causing electric shock hazards to the human body, and the safety performance is low. Co...

AI Technical Summary

Problems solved by technology

[0002] Loudspeaker equipment is widely used in tunnels. It is mainly used to remind passing vehicles to drive safely before traffic accidents or maintenance in tunnels. The existing loudspeaker equipment is basically integrated with its fixed and loudspeaker parts. It is directly installed on the top wall of the tunnel through a threaded structure. When overhaul and maintenance are required, the speaker part and the fixed part need to be removed together with a screwdriver and other tools. The operation takes a long time and the work efficiency is low. Moreover, the traditional speaker The power connection part of the equipment is often exposed to the outside world, which is easy to cause the installation personnel to touch it by mistake, causing electric shock hazards to the human body, and the safety performance is low

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