Lightning protection automatic switch for satellite television receiver

Abstract

The invention relates to a lightning protection automatic switch for a satellite television receiver, which comprises a shell, wherein both ends of the shell are respectively provided with an external terminal which is connected with an external cable; the other end of the external terminal at one side is provided with an on-off interface, and the other end of the external terminal at the other side is connected with an internal cable; a guide rail assembly is arranged in the shell; a drive mechanism is installed on the guide rail assembly and is connected with the external terminal at the other side by the internal cable; a control circuit board and a motor controlled by the control circuit board are arranged on the drive mechanism; and one end of the drive mechanism is provided with a contact terminal which is matched with the on-off interface. The invention ensures that a receiver and connected equipment thereof can not be damaged by lightning overvoltage and lightning current when a satellite antenna is subjected to lightning stroke, and solves the technical problem of poor lightning protection effect and easiness for causing personal injury by plugging and drawing a plug every time in the prior art.

Description

technical field [0001] The invention relates to a lightning protection device, in particular to a lightning protection automatic switch which can be turned on and off automatically and is used on a satellite television receiver. Background technique [0002] The direct-to-home (DTH) satellite TV receiving system needs an outdoor satellite receiving antenna and tuner to receive satellite signals, and then send the signals to the indoor satellite TV receiver through cables. Outdoor satellite receiving antennas are often installed on high places, such as roofs, pillar tops, or open and unobstructed places, in order to achieve good reception effects. This makes satellite receiving antennas vulnerable to lightning strikes. Once struck by lightning, lightning overvoltage and lightning current will enter the room through the cable, which may not only damage the receiver and other electrical equipment connected to it, but may also cause fire and personal injury. With the increasin...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a cable connected in series between a satellite receiving antenna and a satellite TV receiver, so that when the satellite antenna is struck by lightning, the lightning overvoltage and lightning current cannot damage the receiver and its connected equipment, and no manual insertion is required. The lightning protection automatic switch with long service life solves the technical problem that the lightning protection effect in the prior art is not good, and the plug needs to be plugged and unplugged every time, which is easy to cause personal injury

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