CN2439737Y

CN2439737Y - Device for preventing house keeping electric appliance from being struck by lightning

Info

Publication number: CN2439737Y
Application number: CN 00223637
Authority: CN
Inventors: 楚文
Original assignee: Guiyang Chengju Electronics Co ltd
Current assignee: Guiyang Chengju Electronics Co ltd
Priority date: 2000-07-07
Filing date: 2000-07-07
Publication date: 2001-07-18
Anticipated expiration: 2010-07-07

Abstract

The utility model discloses a device which prevents electric appliances from being struck by lightning. The utility model is characterized in that a casing is provided with a power supply socket, a television antenna signal input socket, and a television signal output socket; a circuit board is provided with three serration type discharge metal plates, two fuses, three inductance coils, a capacitor, a resistor, a voltage dependent resistor, and a transient electricity suppression depressor; saw teeth of the serration type discharge metal plates are mutually corresponding and are separated from each other with certain gap. The utility model can prevent household electric appliances from being struck by lightning when the household electric appliances are used in lightning storm days, and especially can prevent TV sets from being struck by lightning through antennas of the TV sets. The utility model has the advantages of simple structure, low cost, easy fabrication, reliable capability, and convenient maintenance.

Description

Prevent the device that household electrical appliance are struck by lightning

The utility model relates to a kind of device that prevents that household electrical appliance are struck by lightning.

At present; the normally used device that is struck by lightning that prevents only is installed in the lightning arrester on the building; these lightning arresters can only protect building not broken by thunder and lightning; and can not prevent that the household electrical appliance in the building are struck by lightning; and generally all do not prevent the protective device that is struck by lightning on the existing household electrical appliance; therefore these household electrical appliance are when thundery sky uses; be easy to be broken by thunder and lightning; television set particularly; even when thundery sky power remove is not used, thunderbolt also is easy to by the antenna of television set television set be broken.

The purpose of this utility model is: provide a kind of simple in structure, cheap, can prevent that the family expenses device is struck by lightning, particularly prevents the device that television set is broken by antenna by thunder and lightning, to overcome the deficiencies in the prior art.

The utility model is to constitute like this: it comprises shell (1), circuit board (2), in circuit board (2) casing (1), on shell (1), be provided with power output socket (3), television antenna signal input socket (4) and TV signal accessory power outlet (5) also are housed on shell (1), three sawtooth pattern discharge metal plate a are housed on circuit board (2), b, c, and two fuse BX1 are housed also on circuit board (2), BX2, three inductance coil L1, L2, L3, capacitor C 1, C2, C3, resistance R, piezo-resistance RV and transient voltage unloader TVS, sawtooth pattern discharge metal plate c places sawtooth pattern discharge metal plate a, between the b, and the sawtooth of sawtooth pattern discharge metal plate c and sawtooth pattern discharge metal plate a, the sawtooth of b relatively and be separated with certain interval, sawtooth pattern discharge metal plate a in addition, b also has part sawtooth point relatively and be separated with certain interval, the live wire of AC power incoming line (6) and zero line are connected to sawtooth pattern discharge metal plate a, on the b, and at sawtooth pattern discharge metal plate a, also be connected with BX1 and BX2 on the b respectively, BX1, the other end of BX2 respectively with L1, the end of L2 connects, L1, the other end of L2 and C1, RV is connected with TVS and is connected with power output socket (3), on sawtooth pattern discharge metal plate c, be connected with earth lead (7), the earth terminal of television antenna signal input socket (4) is connected with earth lead (7) with the end of L3 and C3, the other end of the signal termination L3 of television antenna signal input socket (4) and an end of capacitor C 2, signal output link, the other end of the other end connecting resistance R of C3 and the earth terminal of TV signal accessory power outlet (5) of the other end connecting resistance R of C2 and TV signal accessory power outlet (5).

Owing to adopted technique scheme, the utility model compared with prior art, has the function that can prevent that household electrical appliance from being broken by thunder and lightning when thundery sky uses, can prevent that particularly thunder and lightning from breaking television set by TV set aerial, and the utility model also have simple in structure, cheap, make easily, dependable performance, advantage easy to maintenance.During use, earlier AC power incoming line (6) is connected on the AC power of 220V, and with earth lead (7) reliable ground, the plug of household electrical appliance is inserted on the power output socket (3), and television antenna is inserted on the television antenna signal input socket (4), coaxial wire with a joint 75 Ω is connected on TV signal accessory power outlet (5) and the television set again, like this, household electrical appliance get final product normal electricity consumption, when thunderbolt takes place when, at three sawtooth pattern discharge metal plate a, b, discharge between the sawtooth point of c, thereby fall end thunderbolt intensity, if be higher than the voltage of regulation by the voltage of fuse and inductance, then piezo-resistance RV and transient voltage unloader TVS conducting, electric current by fuse is increased, thereby make the fuse quick-break, can reach like this and prevent the purpose of being struck by lightning; When thunderbolt is beaten on antenna, at first between the sawtooth point of three sawtooth pattern discharge metal plate a, b, c, discharge, greatly reduce thunderbolt voltage, and under the isolation of high-voltage capacitance C2, C3, make thunder-strike current can't arrive television set, thereby it is bad to prevent that television set is struck by lightning.

Accompanying drawing 1 is a schematic appearance of the present utility model;

Accompanying drawing 2 is a structure principle chart of the present utility model.

Embodiment of the present utility model: shell (1) preferably adopts the higher insulating material of intensity to make, circuit board (2) adopts circuit board material commonly used in the prior art to make and gets final product, three sawtooth pattern discharge metal plate a, b, c preferably adopts electric conductivity copper coin material preferably, fuse BX1, BX2, three inductance coil L1, L2, L3, capacitor C 1, C2, C3, resistance R, piezo-resistance RV and transient voltage unloader TVS all adopt the finished product of selling on the market to assemble, fuse BX1, BX2 preferably adopts spiral protective tube, be convenient to like this change in use, during making, circuit board (2) is contained in the shell (1), on shell (1), produce power output socket (3), and on shell (1), load onto television antenna signal input socket (4) and TV signal accessory power outlet (5), on circuit board (2), load onto three sawtooth pattern discharge metal plate a, b, c, and fuse BX1, BX2, three inductance coil L1, L2, L3, capacitor C 1, C2, C3, resistance R, piezo-resistance RV and transient voltage unloader TVS, sawtooth pattern discharge metal plate c is placed sawtooth pattern discharge metal plate a, between the b, and make sawtooth and the sawtooth pattern discharge metal plate a of sawtooth pattern discharge metal plate c, the sawtooth of b relatively and be separated with certain interval, in addition with sawtooth pattern discharge metal plate a, the part sawtooth of b point is relatively and every certain interval, the live wire and the zero line of AC power incoming line (6) are connected to sawtooth pattern discharge metal plate a, on the b, and at sawtooth pattern discharge metal plate a, connect respectively on the b and go up BX1 and BX2, with BX1, the other end of BX2 respectively with L1, the end of L2 connects, with L1, the other end of L2 and C1, RV is connected with TVS and is connected with power output socket (3), on sawtooth pattern discharge metal plate c, connect earth lead (7), the earth terminal of television antenna signal input socket (4) and the end of L3 and C3 are connected with earth lead (7), with the other end of the signal termination L3 of television antenna signal input socket (4) and an end of capacitor C 2, with the signal output link of the other end connecting resistance R of C2 and TV signal accessory power outlet (5), with the earth terminal of the other end of the other end connecting resistance R of C3 and TV signal accessory power outlet (5).

Claims

1, a kind of device that prevents that household electrical appliance are struck by lightning, it comprises shell (1), circuit board (2), circuit board (2) is contained in the shell (1), on shell (1), be provided with power output socket (3), it is characterized in that: television antenna signal input socket (4) and TV signal accessory power outlet (5) also are housed on shell (1), three sawtooth pattern discharge metal plate a are housed on circuit board (2), b, c, and two fuse BX1 are housed also on circuit board (2), BX2, three inductance coil L1, L2, L3, capacitor C 1, C2, C3, resistance R piezo-resistance RV and transient voltage unloader TVS, sawtooth pattern discharge metal plate c places sawtooth pattern discharge metal plate a, between the b, and the sawtooth of sawtooth pattern discharge metal plate c and sawtooth pattern discharge metal plate a, the sawtooth of b relatively and be separated with certain interval, sawtooth pattern discharge metal plate a in addition, b also has part sawtooth point relatively and be separated with certain interval, the live wire of AC power incoming line (6) and zero line are connected to sawtooth pattern discharge metal plate a, on the b, and at sawtooth pattern discharge metal plate a, also be connected with BX1 and BX2 on the b respectively, BX1, the other end of BX2 respectively with L1, the end of L2 connects, L1, the other end of L2 and C1, RV is connected with TVS and is connected with power output socket (3), being connected with the earth terminal of earth lead (7) television antenna signal input socket (4) and the end of L3 and C3 on sawtooth pattern discharge metal plate c is connected with earth lead (7), the other end of the signal termination L3 of television antenna signal input socket (4) and an end of capacitor C 2, signal output link, the other end of the other end connecting resistance R of C3 and the earth terminal of TV signal accessory power outlet (5) of the other end connecting resistance R of C2 and TV signal accessory power outlet (5).