CN219592118U - Surge protector and video box - Google Patents

Abstract

The utility model relates to the field of surge protection, in particular to a surge protector and a video box. The surge protector comprises a shell and a circuit board positioned in the shell, wherein a plurality of groups of lightning protection components are arranged on the circuit board, each group of lightning protection components comprises a lightning protection circuit arranged on the circuit board and lightning protection elements which are connected at corresponding positions of the circuit board and correspond to the lightning protection circuits one by one, the shell is provided with an incoming line port, an outgoing line port and a grounding port, the incoming line port is connected with an incoming line side of the lightning protection circuit, the outgoing line port is connected with an outgoing line side of the lightning protection circuit, and the grounding port is connected with a grounding side of the lightning protection circuit. The space occupied by the device can be reduced.

Description

Surge protector and video box

Technical Field

The utility model relates to the field of surge protection, in particular to a surge protector and a video box.

Background

The surge protector has the function of protecting a circuit, the surge protector is connected into the circuit, and the resistance of the piezoresistor in the surge protector is larger, so that the grounding circuit of the surge protector is not connected under normal conditions of the circuit, when a large current passes through the circuit, the resistance of the piezoresistor is reduced, the grounding circuit of the surge protector is communicated, and the current in the circuit is discharged through the grounding circuit of the surge protector, so that the purpose of protecting the circuit is achieved. In practical application, the surge protector is often arranged in relatively closed spaces such as a video box and a power distribution cabinet, for example, in the field of video boxes, and lightning protection is carried out on a power supply cable of a camera. Because every video box can supply power to multichannel camera, consequently every way power supply cable all needs one set of surge protector to carry out lightning protection, in traditional scheme, every surge protector all includes one set lightning protection circuit, lightning protection component and casing, and a plurality of surge protectors set up on the grounding rail in the box of video box, and when the camera quantity was great, the quantity of corresponding surge protector was more, and the space that grounding rail occupy was added, therefore caused that the video incasement space that all surge protectors occupy is great.

Disclosure of Invention

In one aspect, the present utility model provides a surge protector that can reduce the space it occupies.

In another aspect, the present utility model provides a video box.

The surge protector comprises a shell and a circuit board positioned in the shell, wherein a plurality of groups of lightning protection components are arranged on the circuit board, each group of lightning protection components comprises a lightning protection circuit arranged on the circuit board and lightning protection elements which are connected at corresponding positions of the circuit board and correspond to the lightning protection circuits one by one, the shell is provided with an incoming line port, an outgoing line port and a grounding port, the incoming line port is connected with an incoming line side of the lightning protection circuit, the outgoing line port is connected with an outgoing line side of the lightning protection circuit, and the grounding port is connected with a grounding side of the lightning protection circuit.

Further, the incoming line ports and the outgoing line ports are respectively in one-to-one correspondence with the lightning protection circuits, the number of the grounding ports is one, and one grounding port is respectively connected with the grounding sides of the lightning protection circuits.

Further, the plurality of wire inlet ports are regularly arranged on the end face of one side of the shell, one end of each wire inlet port extends out of the shell to be matched with an external circuit, and the other end of each wire inlet port is positioned in the shell and connected with the wire inlet side of the lightning protection circuit; the plurality of outlet ports are regularly arranged on the end face of the other side of the shell, one end of each outlet port extends out of the shell to be matched with the external circuit, and the other end of each outlet port is positioned in the shell and connected with the outlet side of the lightning protection circuit; the grounding port is arranged on the same side as the incoming line port or the outgoing line port, one end of the grounding port extends out of the shell to be matched with an external grounding circuit, and the other end of the grounding port is positioned in the shell and connected with the grounding sides of the lightning protection circuits.

Further, the shell comprises an upper shell, a lower shell and an end plate, the upper shell is detachably matched with the lower shell, the circuit board is detachably matched with the upper shell and/or the lower shell, the end plate is detachably matched with the upper shell and/or the lower shell, and the inlet wire port, the outlet wire port and the grounding port are respectively arranged on the end plate.

Further, the upper shell and the lower shell are respectively U-shaped, the upper shell and the lower shell are buckled relatively to form a pipeline structure, the number of the end plates is two, and the two end plates are respectively positioned at two opening parts of the two ends of the pipeline structure.

Further, the upper shell is matched with the lower shell through two groups of buckle components, each group of buckle components comprises a lug and a groove which can be mutually embedded, one side of the upper shell is provided with the lug, the other side of the upper shell is provided with the groove, and the lower shell is correspondingly provided with the groove and the lug.

Further, the lightning protection circuit comprises a first circuit, a second circuit, a first grounding circuit and a second grounding circuit, wherein the first circuit is provided with a first incoming line side and a first outgoing line side, and the second circuit is provided with a second incoming line side and a second outgoing line side; one end of the first grounding line is connected with the first line, and the other end of the first grounding line forms a grounding side; one end of the second grounding line is connected with the second line, and the other end of the second grounding line is connected with the first grounding line to form a grounding side; the first grounding circuit and the second grounding circuit are respectively provided with the lightning protection element.

Further, the lightning protection element is a thermal protection piezoresistor.

Further, the first circuit is connected with the second circuit through a lightning protection device.

The video box provided by the utility model comprises a box body, wherein the surge protector is arranged in the box body.

Advantageous effects

Compared with the traditional surge protector, the lightning protection circuit is arranged on the circuit board, multiple paths of lightning protection circuits are arranged on each circuit board, and lightning protection elements on each path of lightning protection circuit are welded on corresponding positions of the circuit board, so that the size of the surge protector shell in the scheme is related to the surface area of the circuit board and the height of the lightning protection elements perpendicular to the panel, the total volume of the surge protector is reduced, and when the surge protector is arranged in a cabinet or a box, the space in the cabinet or the box occupied by the surge protector is saved. And all devices in this scheme all are located the casing, are equipped with inlet wire port, outlet wire port and ground connection port on the casing, and power supply cable and inlet wire port and outlet wire port cooperation to make lightning protection circuit access on the power supply cable, ground connection cable and ground connection port cooperation, thereby make lightning protection circuit and lightning protection circuit ground connection, improved surge protector's integrated level, the dismouting of being convenient for.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present utility model;

FIG. 2 is an exploded schematic view provided by an embodiment of the present utility model;

fig. 3 is a schematic view of a partial structure provided in an embodiment of the present utility model.

Reference numerals: 1-a housing; 2-ground port; 3-inlet port; 4-upper shell; 5-a lower shell; 6-end plates; 7-knocking out the hole; 8-perforating; 9-an outlet port; 10-a lightning protection element; 11-a circuit board; 12-piping structure; 13-a chute; 14-bump; 15-grooves.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

Examples

The utility model provides a surge protector, including casing 1 and the circuit board 11 that is located casing 1, be equipped with a plurality of groups lightning protection subassembly on the circuit board 11, every group lightning protection subassembly is including setting up lightning protection circuit on circuit board 11 and connecting the lightning protection component 10 with lightning protection circuit one-to-one in circuit board 11 corresponding position, be equipped with inlet wire port 3 on casing 1, outlet wire port 9 and ground connection port 2, inlet wire port 3 links to each other with lightning protection circuit's inlet wire side, outlet wire port 9 links to each other with lightning protection circuit's outlet wire side, ground connection port 2 links to each other with lightning protection circuit's ground connection side.

The surge protector is arranged in the video box and particularly performs lightning protection on a power supply cable of the video camera. Because every video box can supply power to multichannel camera, consequently every way power supply cable all needs to carry out lightning protection, in traditional scheme, every surge protector all includes one set of lightning protection circuit, lightning protection element 10 and casing 1, and every surge protector all needs to carry out wiring and the ground connection of power supply cable alone, and when camera quantity was great, the quantity of corresponding surge protector was more, therefore causes the video incasement space that the surge protector took great. Compared with the traditional surge protector, the lightning protection circuit is arranged on the circuit board 11, multiple paths of lightning protection circuits are arranged on each circuit board 11, and the lightning protection elements 10 on each path of lightning protection circuit are welded on the corresponding positions of the circuit board 11, so that the size of the surge protector shell 1 in the scheme is related to the surface area of the circuit board 11 and the height of the lightning protection elements 10 perpendicular to the panel, the total volume of the surge protector is reduced, and the space in a video box is saved.

All devices in this scheme all are located casing 1, are equipped with inlet wire port 3, outlet wire port 9 and ground connection port 2 on the casing 1, and power supply cable and inlet wire port 3 and outlet wire port 9 cooperation to make lightning protection circuit access on the power supply cable, ground connection cable and ground connection port 2 cooperation, thereby make lightning protection circuit and lightning protection circuit ground connection, improved surge protector's integrated level, the dismouting of being convenient for.

In an alternative embodiment, the incoming line ports 3 and the outgoing line ports 9 are respectively in one-to-one correspondence with the lightning protection circuits, the number of the grounding ports 2 is one, and one grounding port 2 is respectively connected with the grounding sides of a plurality of lightning protection circuits.

Each lightning protection circuit corresponds to one incoming line port 3 and one outgoing line port 9 on the shell 1, the grounding side of all the lightning protection circuits on the circuit board 11 are connected with the grounding port 2 on the shell 1 in the shell 1, when the surge protector is used for wiring, if the surge protector is used for protecting a four-way camera, four power supply cables are respectively connected with the four lightning protection circuits, specific power supply cables are respectively matched with the lightning protection circuits through the plugging structures of the incoming line port 3 and the outgoing line port 9, and the grounding cables in the video box are matched with the four lightning protection circuits through the plugging structures of the grounding port 2.

In an alternative embodiment, a plurality of wire inlet ports 3 are regularly arranged on one side end surface of the shell 1, one end of each wire inlet port 3 extends out of the shell 1 to be matched with an external circuit, and the other end of each wire inlet port is positioned in the shell 1 and connected with the wire inlet side of the lightning protection circuit; the plurality of outlet ports 9 are regularly arranged on the end face of the other side of the shell 1, one end of each outlet port 9 extends out of the shell 1 to be matched with an external circuit, and the other end of each outlet port 9 is positioned in the shell 1 and connected with the outlet side of the lightning protection circuit; the grounding port 2 is arranged on the same side as the incoming line port 3 or the outgoing line port 9, one end of the grounding port 2 extends out of the shell 1 to be matched with an external grounding line, and the other end of the grounding port 2 is positioned in the shell 1 and connected with the grounding sides of a plurality of lightning protection circuits.

The plurality of incoming line ports 3 are regularly arranged on one side end face of the shell 1, the plurality of outgoing line ports 9 are regularly arranged on the other side end face of the shell 1, specifically, the plurality of incoming line ports 3 are arranged in a straight shape, the same number of outgoing line ports 9 are also arranged in a straight shape, and the positions are corresponding, for example, the incoming line port 3 on the right and the outgoing line port 9 on the right correspond to the incoming line side and the outgoing line side of the same path of lightning protection circuit, and the like, so that wiring is facilitated.

Three groups of openings 8 are formed in corresponding positions on the shell 1, the outgoing line port 9 and the incoming line port 3 are respectively fixed on the circuit board 11, and extend out of the shell 1 through the openings 8 so as to facilitate the plugging of an external power supply cable, and the grounding port 2 and the outgoing line port 9 are formed on the same side of the shell 1 or on the same side of the shell 1 as the incoming line port 3. The binding post is fixed on circuit board 11, stretches out outside casing 1 via trompil 8 on casing 1, and the casing 1 that stretches out in this scheme indicates protruding casing 1 outer wall or with the outer wall parallel and level of casing 1, or lie in casing 1 just to trompil 8, and the plug of outside power cable and earth connection cable can stretch into in casing 1 and peg graft with outlet port 9, inlet port 3 or earth connection port 2 via trompil 8.

In an alternative embodiment, the housing 1 includes an upper case 4, a lower case 5, and an end plate 6, the upper case 4 is detachably engaged with the lower case 5, the circuit board 11 is detachably engaged with the upper case 4 and/or the lower case 5, the end plate 6 is detachably engaged with the upper case 4 and/or the lower case 5, and the inlet port 3, the outlet port 9, and the ground port 2 are provided on the end plate 6, respectively.

One of the two end plates 6 is provided with an opening 8 for penetrating out the incoming line port 3, the other end plate is provided with an opening 8 for penetrating out the outgoing line port 9, and the two end plates 6 are respectively provided with a knock-out hole 7, so that the grounding port 2 can extend out through one knock-out hole 7.

Preferably, the circuit board 11 cooperates with the lower shell 5, and each end plate 6 is provided with two sets of mounting holes, one set for screw cooperation with the upper shell 4 and the other set for screw cooperation with the lower shell 5. The detachable cooperation between the upper shell 4 and the lower shell 5 is used for positioning, so that the subsequent end plate 6 can be correctly matched with the lower shell 5 of the upper shell 4, the fixation between the upper shell 4 and the lower shell 5 is realized through the screw of the end plate 6, the upper shell 4, the lower shell 5 and the end plate 6 are enclosed to form a cavity, and the circuit board 11 and the lightning protection element 10 are positioned in the cavity.

In an alternative embodiment, the upper shell 4 and the lower shell 5 are respectively in a U shape, the upper shell 4 and the lower shell 5 are buckled relatively to form the pipeline structure 12, the number of the end plates 6 is two, and the two end plates 6 are respectively positioned at two end openings of the pipeline structure 12.

The U-shaped inside wall surface of the lower shell 5 is provided with two opposite sliding grooves 13, two side edges of the circuit board 11 are respectively inserted into the corresponding sliding grooves 13 to be fixed, when the upper shell 4 and the lower shell 5 are enclosed, the circuit board 11 and the lightning protection device are both positioned in a pipeline structure 12 formed by enclosing the upper shell 4 and the lower shell 5, the wire outlet port 9, the wire inlet port 3 and the grounding port 2 are all opened towards two ends of the pipeline structure 12, and when the end plate 6 closes the two ends of the pipeline structure 12, the wire outlet port 9, the wire inlet port 3 and the grounding port 2 respectively extend out from corresponding openings 8 of the end plate 6.

In an alternative embodiment, the upper shell 4 and the lower shell 5 are matched through two groups of buckle components, each group of buckle components comprises a lug 14 and a groove 15 which can be mutually embedded, one side of the upper shell 4 is provided with the lug 14, the other side is provided with the groove 15, and the lower shell 5 is correspondingly provided with the groove 15 and the lug 14.

The determination of the direction is realized through the cooperation of the lug 14 and the groove 15 between the upper shell 4 and the lower shell 5, because one side of the upper shell 4 is provided with the lug 14, the other side is provided with the groove 15, the same side of the lower shell 5 is provided with the lug 14, the other side is provided with the groove 15, and the lug 14 cooperates with the groove 15 to form a group of buckle components, so that the upper shell 4 cooperates with the lower shell 5 in a preset mode to realize the cooperation of the two groups of buckle components, thereby avoiding the direction outgoing line error between the upper shell 4 and the lower shell 5.

In an alternative embodiment, the lightning protection circuit includes a first line, a second line, a first ground line, and a second ground line, the first line having a first incoming side and a first outgoing side, the second line having a second incoming side and a second outgoing side; one end of the first grounding line is connected with the first line, and the other end of the first grounding line forms a grounding side; one end of the second grounding line is connected with the second line, and the other end of the second grounding line is connected with the first grounding line to form a grounding side; the lightning protection element 10 is respectively arranged on the first grounding line and the second grounding line.

In an alternative embodiment, the lightning protection element 10 is a thermal protection varistor.

In an alternative embodiment, the first line and the second line are connected by a lightning protection device.

It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The utility model may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, last, and next, etc. do not denote any order. These words may be interpreted as names.

The above embodiments are only suitable for illustrating the present utility model, not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present utility model, and thus all equivalent technical solutions are also within the scope of the present utility model, which is defined by the claims.

Claims (10)

1. The utility model provides a surge protector, its characterized in that, include casing (1) and be located circuit board (11) in casing (1), be equipped with a plurality of groups lightning protection subassembly on circuit board (11), every group lightning protection subassembly is including setting up lightning protection circuit on circuit board (11) and connect lightning protection component (10) of lightning protection circuit one-to-one in circuit board (11) corresponding position, be equipped with inlet wire port (3), outlet wire port (9) and ground connection port (2) on casing (1), inlet wire port (3) with lightning protection circuit's inlet wire side links to each other, outlet wire port (9) with lightning protection circuit's outlet wire side links to each other, ground connection port (2) with lightning protection circuit's ground connection side links to each other.

2. The surge protector according to claim 1, characterized in that the incoming line ports (3) and the outgoing line ports (9) are respectively in one-to-one correspondence with the lightning protection circuits, the number of the grounding ports (2) is one, and one grounding port (2) is respectively connected with the grounding sides of the lightning protection circuits.

3. The surge protector according to claim 2, characterized in that the plurality of incoming line ports (3) are regularly arranged on one side end face of the housing (1), one end of each incoming line port (3) extends out of the housing (1) to be matched with an external circuit, and the other end of each incoming line port is positioned in the housing (1) to be connected with an incoming line side of the lightning protection circuit; the plurality of outlet ports (9) are regularly arranged on the end face of the other side of the shell (1), one end of each outlet port (9) extends out of the shell (1) to be matched with the external circuit, and the other end of each outlet port is positioned in the shell (1) and connected with the outlet side of the lightning protection circuit; the grounding port (2) is arranged on the same side as the incoming line port (3) or the outgoing line port (9), one end of the grounding port (2) extends out of the shell (1) to be matched with an external grounding circuit, and the other end of the grounding port is positioned in the shell (1) to be connected with the grounding sides of the lightning protection circuits.

4. The surge protector according to claim 1, characterized in that the housing (1) comprises an upper shell (4), a lower shell (5) and an end plate (6), the upper shell (4) is detachably mated with the lower shell (5), the circuit board (11) is detachably mated with the upper shell (4) and/or the lower shell (5), the end plate (6) is detachably mated with the upper shell (4) and/or the lower shell (5), and the inlet port (3), the outlet port (9) and the ground port (2) are provided on the end plate (6), respectively.

5. The surge protector according to claim 4, characterized in that the upper shell (4) and the lower shell (5) are respectively U-shaped, the upper shell (4) and the lower shell (5) are buckled relatively to form a pipeline structure (12), the number of the end plates (6) is two, and the two end plates (6) are respectively located at two end openings of the pipeline structure (12).

6. The surge protector according to claim 5, characterized in that the upper shell (4) and the lower shell (5) are matched through two groups of buckle components, each group of buckle components comprises a lug (14) and a groove (15) which can be mutually embedded, one side of the upper shell (4) is provided with the lug (14), the other side is provided with the groove (15), and the lower shell (5) is correspondingly provided with the groove (15) and the lug (14).

7. The surge protector of claim 1, wherein the lightning protection circuit comprises a first line, a second line, a first ground line, and a second ground line, the first line having a first incoming side and a first outgoing side, the second line having a second incoming side and a second outgoing side; one end of the first grounding line is connected with the first line, and the other end of the first grounding line forms a grounding side; one end of the second grounding line is connected with the second line, and the other end of the second grounding line is connected with the first grounding line to form a grounding side; the first grounding circuit and the second grounding circuit are respectively provided with the lightning protection element (10).

8. The surge protector according to claim 7, characterized in that the lightning protection element (10) is a thermal protection varistor.

9. The surge protector of claim 8, wherein the first line and the second line are connected by a lightning protection device.

10. A video box comprising a box body, wherein the surge protector as claimed in any one of claims 1 to 9 is provided in the box body.