CN215498262U

CN215498262U - Fire-fighting electronic equipment and circuit protection device thereof

Info

Publication number: CN215498262U
Application number: CN202120475383.3U
Authority: CN
Inventors: 黄美琼
Original assignee: Guangdong Minhua Electrical Appliances Co ltd
Current assignee: Guangdong Minhua Electrical Appliances Co ltd
Priority date: 2020-11-11
Filing date: 2021-03-04
Publication date: 2022-01-11
Anticipated expiration: 2031-03-04

Abstract

The utility model relates to the field of fire-fighting electronic equipment, and provides a plug-in type circuit protection device in one embodiment of the utility model, which comprises: the first group of connectors, an overcurrent protection unit and an overvoltage protection unit. The first group of connectors further comprises a first connector, a second connector and a third connector. The overcurrent protection unit is connected between the first connector and the third connector; and the overvoltage protection unit is connected between the second connector and the third connector. Therefore, a pluggable circuit protection device is provided for a circuit board in the fire-fighting electronic equipment, and the maintainability of the circuit board is improved, so that the circuit board can be conveniently maintained after damage caused by overvoltage/overcurrent.

Description

Fire-fighting electronic equipment and circuit protection device thereof

Technical Field

The utility model relates to the field of fire fighting equipment, in particular to fire fighting electronic equipment and a circuit protection device used in the fire fighting electronic equipment.

Background

The fire-fighting electronic equipment includes: fire emergency lighting, evacuation indication devices, and fire alarm devices/systems, among others. The fire-fighting emergency lighting and evacuation indicating system is a system for providing lighting and evacuation indication for places which still need to work when people are evacuated and fire occurs, is widely applied to various buildings and comprises emergency lamps, a centralized power supply, a distribution box, a controller and other devices, circuits are arranged in the devices, and the operation of the system depends on the mutual cooperation among the circuits in the devices.

Most circuits on the current market are provided with protection components and parts on the circuits in fire-fighting emergency lighting equipment, an evacuation indicating system and a fire alarm system in a patch or plug-in mode, the protection components and parts mainly play an overload protection role, when the circuits break down and are abnormal, the protection components and parts can disconnect the power supply of the circuits along with indexes such as current, voltage, temperature and the like when the indexes rise to a certain height, and therefore the effects of protecting other components and parts except the protection components and parts in the circuits are achieved.

However, these protective circuit structures have a large problem, 1) after the protective components break the circuit, especially after the protective components are damaged and failed, the whole circuit board can also be immediately failed and can not work, and users can only send the circuit board to a manufacturer to replace the components after disassembling the circuit board, which is time-consuming in maintenance; 2) due to cost constraints, the protective components and other components are integrated on the same PCB and are located at a relatively short distance from each other, which may cause sparks to occur when the protective components are open-circuited, which may also damage other components in the circuit.

SUMMERY OF THE UTILITY MODEL

It would be beneficial to eliminate the fire protection electronics if the protection capability of the circuit in over current/over voltage situations could be enhanced, or the maintainability/maintainability of the fire protection electronics after over current/over voltage faults occurred.

In one embodiment of the present invention, there is provided a circuit protection device including: a first group of connecting heads is arranged on the base,

overcurrent protection unit, overvoltage protection unit. The first group of connectors further comprises a first connector, a second connector and a third connector;

the overcurrent protection unit is connected between the first connector and the third connector;

and the overvoltage protection unit is connected between the second connector and the third connector.

In some embodiments of the present invention, the circuit protection device in the fire protection system (e.g., the electronic device for fire emergency lighting/evacuation indication) is physically independent, e.g., the circuit protection device is implemented as a plug-in, pluggable Printed Circuit Board (PCB), which can be plugged into one or more other PCBs in the fire emergency lighting/evacuation indication device to form a plug-in combined circuit. Correspondingly, the plug-in type circuit protection device in these embodiments further includes a first substrate, which carries the first group of connectors, the overcurrent protection unit, and the overvoltage protection unit.

Optionally, in the circuit protection device in some embodiments, a) the overvoltage protection unit is connected to the second connector, b) the overvoltage protection unit is connected to the third connector, c) the overcurrent protection unit is connected to the second connector, and d) the overcurrent protection unit is connected to the third connector through wires printed on the first substrate.

Optionally, in the circuit protection device in some embodiments, the first group of connectors protrudes from one side of the first substrate side by side.

Optionally, in the circuit protection device in some embodiments, the overcurrent protection unit and the overvoltage protection unit are connected in series between the conductive part of the first connector and the conductive part of the second connector; and the conductive part of the third connector extends from the wire between the overcurrent protection unit and the overvoltage protection unit to form the conductive part.

Optionally, in the circuit protection device in some embodiments, the overvoltage protection unit is at least one of a Transient Voltage Suppression (TVS) diode, a varistor (MOV), a Gas Discharge Tube (GDT), or a zener diode; and the overcurrent protection unit is an overcurrent circuit breaker.

The actions of protective components such as an overvoltage protection unit, an overcurrent protection unit and the like have response time, and when an overload condition that the instantaneous rise is over a design threshold value occurs on a circuit, if the response performance of the overvoltage protection unit and the overcurrent protection unit is not enough, the components in the circuit are easily damaged; or, when the current and the voltage can break down the protection component, other components behind the protection component are easily and directly damaged. In this respect, the transient voltage suppression diode is adopted in some embodiments, and the fast response performance of the overvoltage protection unit to surge voltage and transient over-high voltage is further improved.

Optionally, in the circuit protection device in some embodiments, the over-current circuit breaking device includes a first fuse device (or simply a first fuse) and/or a serpentine, for example, the over-current circuit breaking device may be a series connection of a segment of the serpentine and a fuse. The serpentine line with the narrow width and the limited length can play a role of a fuse to a certain extent, and is beneficial to realizing overload protection.

Optionally, in the circuit protection device in some embodiments, the second connection terminal is configured to be connected to a negative pole of a power supply; the first connection terminal is configured to connect to a positive electrode of a power source, in other words; the first connector may be for connection to a positive pole of a power source. The third connection is configured for connecting a positive polarity input of the load (i.e., a current inflow of the load).

Of course, it will be understood that: the connection between the first connection terminal and the positive pole of the power source in this embodiment, as well as the connection between the two components or modules mentioned in other embodiments, may be a direct connection or an indirect connection. For example, in the case that the fourth connector is connected to the first connection terminal and the first connection terminal is connected to the positive pole of the power supply, the first connector can be connected to the positive pole of the power supply through the fourth connector and the first connection terminal by the plugging fit between the first connector and the fourth connector.

Optionally, in the circuit protection device in some embodiments, the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the negative pole of one-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the positive pole of one-way transient voltage suppression diode connect in the second connector, the second end of first fuse connect in first connector.

As an alternative, the circuit protection device can also protect the load circuit against "overvoltage" and "overcurrent" mainly from the negative polarity input end of the load circuit. For example, in some embodiments of the circuit protection device, the first fuse may be connected in series with the negative polarity input terminal of the load circuit (i.e., the current outlet terminal of the load circuit). the second connection terminal is configured to be connected (indirectly) to the positive terminal of the power supply; the first connection terminal is configured to be connected (indirectly) to a negative pole of a power source; the third connection is configured to connect to a negative polarity input of a load.

Optionally, in the circuit protection device in some embodiments, the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the positive pole of the unidirectional transient voltage suppression diode and the first end of the first fuse are connected to the third connector/third plug terminal, the negative pole of the unidirectional transient voltage suppression diode is connected to the second connector, and the second end of the first fuse is connected to the first connector.

Optionally, in the circuit protection device in some embodiments, the transient voltage suppression diode is: i) a set of anti-parallel unidirectional transient voltage suppression diodes, or ii) bidirectional transient voltage suppression diodes. The reverse parallel unidirectional transient voltage suppression diode group comprises two or more TVS diodes, wherein one part of TVS diodes and the other part of TVS diodes are reversely connected in parallel.

Optionally, in the circuit protection device in some embodiments, the circuit protection device further includes a second fuse; and the number of the first and second groups,

the first end of the transient voltage suppression diode and the first end of the first fuse are connected to the first end of the second fuse, and the second end of the second fuse is connected to the third connector.

A fire-fighting electronic device (i.e., an electronic device for fire protection/an electronic device for fire protection system) comprising:

the second group of connectors, the first wiring terminal, the second wiring terminal and the load;

the second group of connectors further comprises a fourth connector, a fifth connector and a sixth connector; and

first binding post connect in the fourth connector, second binding post connect in the fifth connector.

Optionally, in the fire fighting electronic device in some embodiments, the first connection terminal is used for connecting a positive pole of a power supply; the second wiring terminal is used for connecting the negative electrode of the power supply; the sixth connector is connected to the positive input end of the load, and the negative input end of the load is connected to the fifth connector.

It can be understood that: the positive polarity input end, i.e. the current inflow end of the load circuit in the operating state, is generally directly or indirectly connected to the positive pole of the power supply; the negative input end is: the current outlet of the load circuit in the operating state is generally connected directly or indirectly to ground or the negative pole of the power supply.

Optionally, in the fire fighting electronic device in some embodiments, the first connection terminal is used for connecting to a negative electrode of a power supply; the second connecting terminal is used for connecting the positive pole of a power supply; the sixth connector is connected to the negative polarity input end of the load, and the positive polarity input end of the load is connected to the fifth connector.

Optionally, in the fire-fighting electronic device in some embodiments, a circuit protection device as in any other embodiment is further included, and i) the fourth connector, the fifth connector and the sixth connector, and ii) the first connector, the second connector and the third connector are respectively adapted and correspondingly arranged, and the first connector, the second connector and the third connector are correspondingly inserted into the fourth connector, the fifth connector and the sixth connector.

Optionally, in the fire fighting electronic device in some embodiments, a second substrate, physically independent from the first substrate, is further included, and the second substrate is configured to carry the second set of connectors, the first connection terminals, the second connection terminals, the load circuit, and the load. The load may include a control circuit, and may further include: one or more of a fire emergency lighting device, a fire emergency indicating device, a fire alarm system, etc.

Optionally, in the fire fighting electronic device in some embodiments, the second set of connectors are both female connectors, and the first set of connectors are both male connectors.

Optionally, in the fire fighting electronic device in some embodiments, the second set of connectors are both male connectors, and the first set of connectors are both female connectors.

Optionally, in the fire fighting electronic device in some embodiments, both the second set of connectors and the first set of connectors are plug terminals, each of the second set of connectors includes a connecting sheet and a connecting pin, which are connected to each other, and both ends of the connecting sheet are symmetrically bent inward to form a pair of holes; each of the first group of connectors is a sheet plug matched with the bent connecting sheet. Thereby, the connectivity of the connector is further improved.

Optionally, in the fire fighting electronic device in some embodiments, the connection pin of the fourth plug terminal is connected to the first connection terminal on the second substrate; the connecting pin of the fifth plug terminal is connected with the second wiring terminal on the second substrate; and the connecting pin of the sixth plug terminal is connected with the positive polarity input end of the load on the second substrate. The first wiring terminal is used for being connected to the positive electrode of a (configured to receive) power supply in a wire mode and the like; and the second connecting terminal is used for connecting the negative electrode of the power supply.

Optionally, in the fire fighting electronic device in some embodiments, the connection pin of the fourth plug terminal is connected to the first connection terminal on the second substrate; the connecting pin of the fifth plug terminal is connected with the second wiring terminal on the second substrate; and the connecting pin of the sixth plug terminal is connected with the negative polarity input end of the load on the second substrate. The first wiring terminal is used for connecting the cathode of a power supply; and the second wiring terminal is used for connecting the positive pole of a power supply.

Optionally, in the fire fighting electronic equipment in some embodiments, the power supply is a low voltage power supply rated at 36 volts.

In addition, it would be beneficial to eliminate the fire-fighting electronic equipment if it were also possible to improve the maintainability of the fire-fighting electronic equipment after a failure of the circuit protection device therein.

The utility model also provides fire-fighting electronic equipment of the embodiment, which comprises a circuit protection device, a first wiring terminal, a second wiring terminal, a load and a connector between the circuit protection device and the load;

the connector comprises a first group of a plurality of connectors and a second group of a plurality of connectors which correspond to each other;

the circuit protection device comprises an overcurrent protection unit and an overvoltage protection unit which are connected with the first plurality of connectors;

the second plurality of connectors are connected to the load, the first wiring terminal and the second wiring terminal;

the first plurality of connectors can be plugged into the second plurality of connectors, so that the overvoltage protection unit is connected in parallel with the load, and the first wiring terminal is connected to the second wiring terminal through the overcurrent protection unit and the load, or looped back to the second wiring terminal.

The parallel connection between the overvoltage protection unit and the load is understood by the person skilled in the art. For example, if the overvoltage protection unit is a zener diode or a unidirectional TVS diode, the cathode of the diode is connected to the positive input terminal of the load, and the anode of the diode is connected to the negative input terminal of the load, which is not described again.

Optionally, in the fire fighting electronic device in some embodiments, the first connection terminal is connected/looped back to the second connection terminal through the overcurrent protection unit and the overvoltage protection unit.

Of course, the order of the circuit devices/components that are routed through the loopback path in these embodiment(s) is not limited.

Optionally, in the fire fighting electronic equipment in some embodiments, the first plurality of connectors includes a first connector, a second connector, and a third connector; the second plurality of connectors comprise a fourth connector, a fifth connector and a sixth connector;

the first connector, the second connector and the third connector are correspondingly inserted into the fourth connector, the fifth connector and the sixth connector respectively.

Those skilled in the art will appreciate that the various connectors and connections to the terminals, such as a fourth connector having a female connector, are connected to: a) a first connection terminal and b) a first connection terminal. This means that the pins of the fourth connector are connected to the first connection terminals on the PCB, and the first connector, which has a male end, is inserted into the insertion hole of the fourth connector.

Optionally, in the fire fighting electronic equipment in some embodiments, the overvoltage protection unit is selected from at least one of a transient voltage suppression diode, a voltage dependent resistor, a gas discharge tube, or a zener diode. The overcurrent protection unit is an overcurrent circuit breaker.

Optionally, in the fire fighting electronic equipment in some embodiments, the overcurrent breaking device is preferably a first fuse.

Optionally, the first connector, the second connector and the third connector are all configured as plugs; the fourth connector, the fifth connector and the sixth connector are all constructed into sockets.

Optionally, the first connector, the second connector and the third connector are all configured as sockets; the fourth connector, the fifth connector and the sixth connector are all constructed into plugs.

Optionally, in the fire fighting electronic equipment in some embodiments, the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the negative pole of one-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the positive pole of one-way transient voltage suppression diode connect in the second connector, the second end of first fuse connect in first connector. The sixth connector is connected to the positive polarity input end of the load. The first wiring terminal is connected to the fourth connector, and the second wiring terminal and the fifth connector are both connected to the negative polarity input end of the load.

Optionally, in the fire fighting electronic equipment in some embodiments, the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the negative pole of one-way transient voltage suppression diode connect in the second connector, the positive pole of one-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the second end of first fuse connect in first connector. The sixth connector is connected to the negative polarity input end of the load. The second wiring terminal is connected with the fourth connector, and the first wiring terminal and the fifth connector are connected with the positive polarity input end of the load.

Optionally, in the fire fighting electronic equipment in some embodiments, the transient voltage suppression diode is a bidirectional transient voltage suppression diode; the first end of two-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the second end of two-way transient voltage suppression diode connect in the second connector, the second end of first fuse connect in first connector. The sixth connector is connected to the positive polarity input end of the load. The first wiring terminal is connected to the fourth connector, and the second wiring terminal and the fifth connector are both connected to the negative polarity input end of the load.

Optionally, in the fire fighting electronic equipment in some embodiments, the transient voltage suppression diode is a bidirectional transient voltage suppression diode; the first end of two-way transient voltage suppression diode connect in the second connector, the second end of two-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the second end of first fuse connect in first connector. The sixth connector is connected to the negative polarity input end of the load. The second wiring terminal is connected with the fourth connector, and the first wiring terminal and the fifth connector are connected with the positive polarity input end of the load.

Further optionally, the first connection terminal is configured to connect to a positive power supply; the second connection terminal is configured to be connected to the negative power supply terminal for user access to a (low voltage) power supply.

Optionally, in the fire fighting electronic device in some embodiments, the socket includes a connecting sheet and a connecting pin, which are connected to each other, and two ends of the connecting sheet are symmetrically bent inwards to form a pair of holes; the plug is a sheet plug matched with the bent connecting sheet.

In some embodiments of the present invention, a circuit protection device in an electronic apparatus for fire protection is provided to be physically independent from other partial circuits in the electronic apparatus for fire protection, and by combining an overcurrent protection unit and an overvoltage protection unit configured such that: when the circuit protection device is plugged into a circuit in an electronic device for fire protection through a connector, the circuit protection device is connected between an external power source and a load through the connector, and the following circuit connections are formed: the overvoltage protection unit is connected in parallel to the load, and the overcurrent protection unit and the load are connected in series to two input terminals of the power supply. This makes it possible to limit damage (for example, burning of components on a PCB due to overcurrent) to only a circuit protection device that is separately plugged when damage occurs to a circuit in an electronic device for fire protection due to overvoltage or overcurrent of a power supply. Therefore, the protection performance of the fire-fighting electronic equipment on the input current and the input voltage which exceed a certain threshold value is improved, meanwhile, the circuit protection device can be conveniently installed, detached and replaced, and the maintainability of the fire-fighting electronic equipment on faults such as overcurrent and overvoltage is also improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a perspective view of a circuit board of a fire fighting electronic device according to one embodiment of the present invention;

FIG. 2 is an exploded perspective view of a circuit board of the fire fighting electronic device of the embodiment of FIG. 1;

FIG. 3 is a schematic view of a plug-in circuit protection device in the fire electronic equipment of the embodiment of FIG. 1;

FIG. 4 is a schematic electrical schematic diagram of the fire fighting electronic device of the embodiment of FIG. 1 in a state where the connector is not connected;

FIG. 5 is a schematic electrical schematic diagram of the fire fighting electronic device of the embodiment of FIG. 1 in a state where the connector is connected;

FIG. 6 is another schematic electrical schematic diagram of the fire fighting electronic device of the embodiment of FIG. 1 in a state where the connector is connected;

FIG. 7 is a schematic circuit diagram of another embodiment of a circuit protection device having 4 connectors and a fire-fighting electronic device having the circuit protection device;

FIG. 8 is a schematic circuit diagram of another embodiment of a circuit protection device having 3 connectors and a fire fighting electronic equipment having the circuit protection device;

fig. 9 is a schematic view of a plug-in type circuit protection device in the fire fighting electronic equipment according to still another embodiment of the present invention.

In the description of the drawings, the same, similar or corresponding reference numerals indicate the same, similar or corresponding elements, components or functions.

Detailed Description

Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of various described embodiments. It will be apparent, however, to one skilled in the art that the various described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail as not to unnecessarily obscure aspects of the embodiments.

The terminology used in the description of the various described embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various described embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

The word "by" as used in this application may be construed as "by" (by), "by" (by virtual of) or "by" (by means of) depending on the context. The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, "when … …" or "when … …" in some embodiments may also be interpreted as conditional assumptions such as "if", "like", etc., depending on context. Similarly, the phrases "if (a stated condition or event)", "if determined" or "if detected (a stated condition or event)" may be construed as "when determined" or "in response to a determination" or "when detected (a stated condition or event)", depending on the context. Similarly, the phrase "in response to (a stated condition or event)" in some embodiments may be interpreted as "in response to detecting (a stated condition or event)" or "in response to detecting (a stated condition or event)", depending on the context.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, a first may also be termed a second, and vice versa, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at …" or "when …" or "in response to a determination", depending on the context.

The present application is further illustrated by way of the following examples, which are not intended to limit the scope of the utility model.

In the field of fire emergency lighting/signage devices, fire alarm devices, etc., these electronic devices may be damaged by a sudden increase in the input voltage of the power supply and exceed a predetermined threshold of the device, which may be caused by instability of the power supply, or may be caused by human factors, for example, some fire emergency lighting/signage devices, the term low voltage electronics of the system, use a power supply rated at about 36V, and when the operator connects the power supply to these devices/systems, a malfunction of "connecting 220V power supply to the power supply input of the device" may occur, thereby causing damage to these systems, and in severe cases, an explosion of the related circuit board may occur. Therefore, circuit protection devices are provided on the circuit boards of these fire emergency lighting/signage devices to prevent such abnormal power supply access.

Further, the inventor has found through research that when the circuit protection unit is subjected to abnormal voltage, excessive voltage (i.e. voltage exceeding a predetermined threshold/rated value, referred to as overvoltage for short), local damage occurs in the circuit protection unit, however, due to the limitation of cost and other factors, the devices of the circuit protection unit on the related circuit board are in a short distance from other protected electrical devices, for example, integrated on the same PCB. Therefore, the device of the circuit protection unit may be damaged by explosion or the like due to overvoltage, which may cause spark or other adverse factors, and may affect other circuit devices to be protected, or even damage the circuit devices.

In view of the above, in some embodiments of the present invention, a circuit protection device in an electronic apparatus for fire protection is provided as a protected circuit physically independent from other parts in the electronic apparatus for fire protection, and is configured by a combination of an overcurrent protection unit and an overvoltage protection unit, so that the circuit protection device can be plugged into the circuit in the electronic apparatus for fire protection through a connector as needed to protect circuit devices from "overvoltage" and "overcurrent" (operating current exceeds a predetermined threshold/rating). The protection capability of the circuit under the condition of instantaneous overcurrent/overvoltage is improved, and the maintainability of the fire-fighting emergency lighting/marking equipment after the failure of a circuit protection device in the fire-fighting emergency lighting/marking equipment is also improved.

For the sake of clarity, in some embodiments of the present application, the above design concept will be described by taking a fire emergency lighting/evacuation indication system with a circuit protection device plugged in as an example. But it should be understood that: a) the circuit protection device and b) the circuit of the fire-fighting electronic equipment which is subjected to overcurrent/overvoltage protection by the circuit protection device can respectively form a complete and independent technical scheme.

Fig. 1 is a perspective view of an electric circuit of a fire fighting electronic device according to an embodiment of the present invention. Fig. 2 is an exploded perspective view of the electric circuit of the fire fighting electronic device of the embodiment in fig. 1, in which the circuit protection device P1 in the electric circuit of the fire fighting electronic device can be more clearly shown. Fig. 3 is a schematic view of a circuit protection device P1 for plugging onto a circuit board PCB7 of a fire fighting electronic device. Fig. 4 is a schematic circuit diagram of the fire fighting electronic equipment of the embodiment in fig. 1 in a state where the connector 3 is not connected. The following description will be made in detail with reference to fig. 1 to 4, regarding some of the fire fighting electronic devices in the application and the circuit protection devices inserted therein.

As shown in fig. 1 and 2, in one embodiment of the present invention, a fire fighting electronic device is provided, which includes a circuit protection device P1, a connector 3, a load L1, connectors P11, P12, P13, P11 ', P12 ', and P13 '. A circuit protection device P1 connectable between the connector 3 and the load L1 through connectors P11, P12, P13, P11 ', P12 ', and P13 '; a corresponding circuit/loop is thus established so that an external power source (not shown in the figure) can supply power to the load L1 through 1) the connectors P11, P12, P13, P11 ', P12 ', P13 ' and 2) the circuit protection device P1.

The connector 3 further comprises a first terminal T1, a second terminal T2. The connector includes a corresponding first plurality of connectors P11, P12, P13 and second plurality of connectors P11 ', P12 ', P13 '.

As shown in fig. 3, the circuit protection device P1 includes an overcurrent protection unit C1 and an overvoltage protection unit V1 connected to a first plurality of connectors P11, P12, P13;

a second plurality of connectors P11 ', P12 ', P13 ' connected to the load L1, the first terminal T1 and the second terminal T2;

the first plurality of connectors P11, P12, P13 may be inserted into the second plurality of connectors P11 ', P12 ', P13 ' to connect the overvoltage protection unit V1 in parallel to the load L1, and the first terminal T1 is connected to the second terminal T2 or looped back (loop back to) the second terminal T2 via the overcurrent protection unit C1 and the load L1.

Those skilled in the art will appreciate that one of the parallel purposes between the overvoltage protection cell V1 and the load L1 in some embodiments is: so that the upper limit voltage sustained across the load L1 is clamped to a predetermined value. For example, if the overvoltage protection unit V1 is implemented as a zener diode or a unidirectional TVS diode, the cathode of the diode is connected to the positive input terminal of the load L1, and the anode of the diode is connected to the negative input terminal of the load L1, which will not be described in detail.

Alternatively, as shown in fig. 5, in the fire fighting electronic equipment in this embodiment, the first connection terminal T1 is connected/looped back to the second connection terminal T2 through the overcurrent protection unit C1 and the overvoltage protection unit V1, and as the loop is formed, if the external voltage connected between the connection terminals T1 and T2 is too high, the overcurrent protection unit C1 in the loop may also be broken to protect the subsequent circuits such as loads.

Optionally, in the fire fighting electronic equipment in this embodiment, the first plurality of connectors includes a first connector P11, a second connector P12, and a third connector P13; the second plurality of connectors includes a fourth connector P11 ', a fifth connector P12 ', and a sixth connector P13 '. The first connector P11, the second connector P12, and the third connector P13 are respectively inserted into the fourth connector P11 ', the fifth connector P12 ', and the sixth connector P13 ', and the first terminal T1 is connected to the fourth connector P11 ', and the second terminal T2 is connected to the fifth connector P12 '.

Those skilled in the art will understand that the respective connectors and the connection relationship between the connectors and the wiring terminal are connected, for example, a fourth connector P11' with a female connector is connected to: a) a first connection point P11 and b) a first connection point T1. This means that the prongs of the fourth connector P11 ' are connected to the first terminals T1 on the circuit board PCB7, and the connector P11, which is configured as a male terminal, is plugged into the fourth connector P11 ', while the prongs of the fourth connector P11 ' are soldered into the receptacle 12 of the circuit board PCB 7.

Optionally, in the fire-fighting electronic equipment in some embodiments, the overvoltage protection unit V1 is selected from at least one of a transient voltage suppression diode, a voltage dependent resistor, a gas discharge tube, or a zener diode. The overcurrent protection unit C1 is an overcurrent breaking device, for example, preferably a fuse.

Alternatively, as shown in fig. 2, the first connector P11, the second connector P12, and the third connector P13 are all configured as plugs; the fourth connector P11 ', the fifth connector P12 ', and the sixth connector P13 ' are all configured as sockets. Alternatively, or vice versa (not shown in the figures): the first connector P11, the second connector P12 and the third connector P13 are all constructed as sockets; the fourth connector P11 ', the fifth connector P12 ', and the sixth connector P13 ' are all configured as plugs.

Optionally, in the fire fighting electronic equipment in some embodiments, the transient voltage suppression diode (or may be simply referred to as TVS, TVS diode) is a unidirectional transient voltage suppression diode. The fuse remains in series with the load L1 in the main circuit, either before the load L1 or after the load L1 in the current direction. In the case where the first terminal T1 is defined for connection to the positive terminal of the power supply and the second terminal T2 is defined for connection to the negative terminal of the power supply, as shown in fig. 5, the negative terminal of the unidirectional transient voltage suppression diode D1 and the first terminal of the fuse F1 are both connected to the third connector P13, the positive terminal of the unidirectional transient voltage suppression diode D1 is connected to the second connector P12, and the second terminal of the fuse F1 is connected to the first connector P11. A sixth connection header P13' located on the circuit board PCB7 of the fire fighting electronic equipment is connected to the positive polarity input terminal of the load L1.

Those skilled in the art will understand that: in this and other embodiments, the connection between two units/modules may be an indirect connection, either directly or through a third unit/module. For example, in the fire-fighting electronic device of the embodiment shown in fig. 5, a second fuse unit F2 (abbreviated as fuse F2) may be further included, the negative electrode of the unidirectional transient voltage suppression diode D1 is connected to the first end of the fuse F1, and the fuse F2 is connected between the connection node and the third connector P13, so as to form a modification shown in fig. 8, in which the negative electrode of the unidirectional transient voltage suppression diode D1 and the first end of the fuse F1 are both indirectly connected to the third connector P13 through the second fuse F2. The second terminal T2 is externally used for connecting a negative terminal of a power supply, and internally on the PCB7, and is connected to the negative terminal of the load L1 together with the fifth connector P12'.

Further alternatively, as in the embodiment shown in fig. 7, the circuit protection device P3 may include not only the second connector P12 but also the seventh connector P14. Correspondingly, the fire fighting electronic equipment may further include an eighth connector P14' fitted with the seventh connector P14. In this solution, the second terminal T2 can be externally used to connect the negative terminal of the power source, and in the circuit board, the three connectors, i.e. 1) the seventh connector P14 and the eighth connector P14 ', 2) the second fuse F2, 3) the second connector P12 and the fifth connector P12', are indirectly connected to the negative terminal of the load L1. Of course, the fifth connector P12' is also connected to the negative terminal of the load L1. That is, the second connection terminal T2 and the fifth connection terminal P12' are both directly or indirectly connected to the negative polarity terminal of the load L1.

Alternatively, as shown in fig. 6, in the fire fighting electronic equipment in some embodiments, in the case that the first connection terminal T1 is configured to be connected with the positive pole of the power supply and the second connection terminal T2 is configured to be connected with the negative pole of the power supply, the overcurrent protection unit C1 may also be connected in series after (but not before) the load L1 in the current direction, for example, it may be understood that: an overcurrent protection unit C1 (e.g., a fuse) is connected in series with the negative polarity input terminal of the load L1, or the fuse is connected in series with the negative polarity output terminal (or simply referred to as a negative terminal) of the power supply through the second terminal T2. The cathode of the unidirectional transient voltage suppression diode V1 is connected to the second connector P12, the anode of the unidirectional transient voltage suppression diode V1 and the first end of the fuse are both connected to the third connector P13, and the second end of the fuse C1 is connected to the first connector P11. A sixth connection port P13' on the circuit board PCB7 of the fire fighting electronic equipment is connected to the negative input terminal of the load L1.

Optionally, the unidirectional transient voltage suppression diodes in the fire fighting electronic equipment in any of the embodiments of the present invention may be replaced with bidirectional transient voltage suppression diodes. Still taking fig. 5 as an example, the first terminal of the bidirectional transient voltage suppression diode and the first terminal of the fuse are both connected to the third connector P13, the second terminal of the bidirectional transient voltage suppression diode is connected to the second connector P12 of the circuit protection device P1, and the second terminal of the fuse is connected to the first connector P11. The first connection terminal T1 is configured to be connected to a power supply positive electrode; the second connection terminal T2 is configured to be connected to the negative electrode of the power supply. A sixth connection header P13' located on the circuit board PCB7 of the fire fighting electronic equipment is connected to the positive polarity input terminal of the load L1. Thereby, the first connector P11, the second connector P12, and the third connector P13 are connected to the positive polarity terminal of the load L1 through the fourth connector P11 ', the fifth connector P12 ', and the sixth connector P13 ', respectively, the "first terminal T1 for turning on the positive power supply pole", the "second terminal T2 for turning on the negative power supply pole", and the "positive polarity terminal. Furthermore, two loops are formed on the circuit boards PCB6, PCB7 in the fire fighting electronic equipment: 1) the power supply positive electrode → the first connection terminal T1 → the fourth connection terminal P11 '→ the first connection terminal P11 → the fuse F1 → the bidirectional transient voltage suppression diode → the second connection terminal P12 → the fifth connection terminal P12' → the second connection terminal T2 → the power supply negative electrode, 2) the power supply positive electrode → the fourth connection terminal P11 '→ the first connection terminal P11 → the fuse F1 → the third connection terminal P13 → the sixth connection terminal P13' → the load L1 → the power supply negative electrode.

In these circuits, the second connector P12 is connected to the negative electrode of the power source through the fifth connector P12' and the second terminal T2; and the first connector P11 is connected to the positive power supply through the fourth connector P11' and the first terminal T1. Thereby, the power of the external power source is communicated with the load, and in case of overvoltage, the load can be protected by fusing the fuse F1, and the load can be protected from being damaged by overhigh voltage by the TVS diode connected in parallel with the load.

In some embodiments, due to the loop formed between the TVS diode, the fuse, and the output terminal of the power supply, when the voltage applied to the connection terminal of the fire emergency lighting/evacuation indication system exceeds the threshold, the TVS forms a clamping voltage to protect the load L1, and the fuse is also blown to protect the load L1. The overvoltage protection unit V1 is implemented as a bidirectional TVS diode, and if the clamping voltage values of the bidirectional TVS diode in both directions are properly set, it is also possible to prevent voltage polarity errors on the terminals to some extent, i.e., no damage is caused to the circuit of the load L1 regardless of a) the first terminal T1 being connected to the positive power supply and the second terminal T2 being connected to the negative power supply, or b) the first terminal T1 being connected to the negative power supply and the second terminal T2 being connected to the positive power supply, or c) an ac power supply being connected between the two terminals, and since the circuit boards PCB6 of the circuit protection devices P1, P2 and the main board PCB7 in the fire-fighting electronic equipment are separate and substantially vertically plug-joined, with a certain distance therebetween, damage to the electronic equipment due to some (e.g., artificial) erroneous operation is prevented, and will generally be confined within the circuit board PCB6 in the circuit protection device without affecting the main board PCB7 in the fire protection electronics.

Alternatively, in the fire fighting electronic equipment in some embodiments, the fourth connector P11 ', the fifth connector P12 ', and the sixth connector P13 ' are each configured as a socket, and the socket includes: the connecting piece 41 and the connecting leg 43 are connected with each other, and both ends of the connecting piece 41 are symmetrically bent inwards to form a pair of holes. The plugs of the first connector P11, the second connector P12 and the third connector P13 are configured as sheet plugs which are matched with the bent connecting pieces 41. An insulating sleeve may be sleeved outside the connecting sheet 41.

Optionally, in some embodiments of the fire fighting electronic device, the power source is a low voltage power source rated at 36 volts.

Plug-in type circuit protection device

In the following description of the circuit protection device P1 in some embodiments, taking fig. 3 as an example and combining other drawings, the circuit protection device P1 may include: the first group of connectors, an overcurrent protection unit C1 and an overvoltage protection unit V1. The first group of connectors further comprises a first connector P11, a second connector P12 and a third connector P13; an overcurrent protection unit C1 connected across the first connector P11 and the third connector P13; and the overvoltage protection unit V1 is bridged/connected between the second connector P12 and the third connector P13. This means that: the over-current protection unit C1 and the over-voltage protection unit V1 are connected in series between the first connector P11 and the second connector P12, and the third connector P13 is located at a circuit node between the over-current protection unit C1 and the over-voltage protection unit V1, for example, extending from a position on a wire between the over-current protection unit C1 and the over-voltage protection unit V1, as shown in fig. 3. Specifically, a first end of the over-current protection unit C1 and a first end of the overvoltage protection unit V1 are commonly connected to the third connector P13, a second end of the over-current protection unit C1 is connected to the first connector P11, and a second end of the overvoltage protection device is connected to the second connector P12.

In some embodiments of the present invention, the circuit protection device P1 of the fire emergency lighting/evacuation indication system is physically separated, for example, the circuit protection device P1 is implemented on a plug-in, pluggable Printed Circuit Board (PCB), which can be plugged onto one or more other Printed Circuit Boards (PCBs) of the fire emergency lighting/evacuation indication system to form a plug-in combined circuit. Correspondingly, the plug-in circuit protection device P1 in these embodiments further includes a first substrate PCB6 carrying a first group of connectors P11, P12, P13, an overcurrent protection unit C1 and an overvoltage protection unit V1.

Optionally, in the circuit protection device P1 in some embodiments, a) the overvoltage protection unit V1 and the second connector P12, b) the overvoltage protection unit V1 and the third connector P13, c) the fuse and the second connector P12, d) the fuse and the third connector P13 are respectively connected through a conductive trace printed on the first substrate PCB 6.

To facilitate connection with other PCBs in the fire emergency lighting/evacuation indication system, in some embodiments, the first set of connectors of the circuit protection device P1 protrude side by side from one side of the first substrate PCB6, as shown in fig. 3. Of course, in addition to the three connectors P11, P12, P13 of the first group of connectors shown in fig. 3 being physically and independently disposed, the group of connectors may also be physically and integrally disposed on one side (or end) of the first substrate, i.e., the three connectors do not individually protrude from the first substrate PCB 6. Instead, as shown in fig. 9, there are no separately projecting jack terminals in the form as a whole as shown in fig. 3, and their conductive portions are arranged side by side at the first side/end of the first substrate. Correspondingly, the sockets on the second substrate PCB7 may also be integrated, in which case, although the three connectors P11 ', P12 ', P13 ' on the second substrate PCB7 are integrated in the form of one socket (not shown), instead of three sockets as shown in fig. 2, in practice three female connectors are included. These modifications are intended to fall within the scope of the claims of the present application.

Optionally, in the circuit protection device P1 in some embodiments, the overcurrent protection unit C1 and the overvoltage protection unit V1 are connected in series between the conductive part of the first connector P11 and the conductive part of the second connector P12; the conductive part of the third connector P13 extends from the conductive line between the overcurrent protection unit C1 and the overvoltage protection unit V1.

Optionally, in the circuit protection device P1 in some embodiments, the overvoltage protection unit V1 is at least one of a Transient Voltage Suppressing (TVS) diode, a varistor (MOV), a Gas Discharge Tube (GDT), or a zener diode. The overcurrent protection unit C1 is an overcurrent breaking device.

The actions of protective components such as the overvoltage protection unit V1 and the overcurrent protection unit C1 have response time, and when an overload condition that the transient rise is over a design threshold value occurs on a circuit, if the response performance of the overvoltage protection unit V1 and the overcurrent protection unit C1 is not enough, the components in the circuit are easily damaged; or, when the current and the voltage can break down the protection component, other components behind the protection component are easily and directly damaged. In this respect, transient voltage suppression diodes are adopted as overvoltage protection units in some embodiments, and the fast response performance of the overvoltage protection units to surge voltage and transient overvoltage is further improved.

Optionally, in the circuit protection device P1 in some embodiments, the over-current circuit breaker device is a fuse device (or simply a fuse).

Optionally, in the circuit protection device P1 in some embodiments, the second connector P12 is configured to connect to the negative pole of the power supply; the first connector P11 is configured to connect to the positive pole of the power source, in other words, the first connector P11 may be used to connect to the positive pole of the power source, and the second connector P12 may be used to connect to the negative pole of the power source. The third connector P13 is used to connect the positive polarity input terminal of the load L1 (i.e., the current inflow terminal of the load L1).

Of course, it will be understood that: the connection between the first connection P11 and the positive pole of the power supply in this embodiment, as well as the connection between the two components or modules mentioned in some other embodiments, may be a direct connection or an indirect connection. For example, in the case where the fourth connector P11 ' is connected to the first terminal T1 and the first terminal T1 is connected to the positive electrode of the power supply, the first connector P11 may be connected to the positive electrode of the power supply through the fourth connector P11 ' and the first terminal T1 by the plugging fit between the first connector P11 and the fourth connector P11 '. Similar indirect connections between other components are not described in detail.

Optionally, in the circuit protection device P1 in some embodiments, the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the cathode of the unidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector P13, the anode of the unidirectional transient voltage suppression diode is connected to the second connector P12, the second end of the fuse F1 is connected to the first connector P11, and the second terminal T2 is connected to the negative terminal of the load L1, as shown in fig. 4.

As an alternative, the circuit protection device P1 may also protect the load L1 circuit against "overvoltage" and "overcurrent" primarily from the negative polarity input terminal of the load L1 circuit. For example, as shown in FIG. 6, in the circuit protection device P2 of some embodiments, the fuse F1 may be connected in series with the second connector P12 of the negative input terminal of the load L1 circuit (i.e., the current outlet terminal of the load L1 circuit) to connect with the positive or first connection terminal T1 of the power supply; the first connector P11 is configured to be connected to the negative electrode of the power supply through the fourth connector P11'; the third connector P13 is configured to be connected to the negative polarity input terminal of the load L1 through the sixth connector P13'. The first connection terminal T1 is connected to the positive polarity terminal of the load L1. Thus, when the circuit protection device P1 is plugged into the connector on the circuit board PCB7, the parallel protection of the overvoltage protection unit to the load is formed, and the main circuit is connected, that is: power supply positive pole → load → fuse → power supply negative pole.

Alternatively, as shown in fig. 6, in the circuit protection device P1 in some embodiments, the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the anode of the unidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector P13, the cathode of the unidirectional transient voltage suppression diode is connected to the second connector P12, and the second end of the fuse is connected to the first connector P11.

Optionally, in the circuit protection device P1 in some embodiments, the transient voltage suppression diode is: i) a set of anti-parallel unidirectional transient voltage suppression diodes, or ii) bidirectional transient voltage suppression diodes. The reverse parallel unidirectional transient voltage suppression diode group comprises two or more TVS diodes, wherein one part of TVS diodes and the other part of TVS diodes are reversely connected in parallel.

A fire fighting electronic device, comprising:

a second group of connectors, a first connecting terminal T1, a second connecting terminal T2 and a load L1;

wherein, the second group of connectors further comprises a fourth connector P11 ', a fifth connector P12 ' and a sixth connector P13 '; and

the first terminal T1 is connected to the fourth connector P11 ', and the second terminal T2 is connected to the fifth connector P12'.

Alternatively, as shown in fig. 3 and 4, in the fire fighting electronic device in some embodiments, the first connection terminal T1 is used for connecting a positive electrode of a power supply; the second connecting terminal T2 can be externally used for connecting the negative electrode of the power supply, and internally connected to the fifth connecting head P12' on the circuit board PCB 7; the sixth connector P13 'is connected to the positive input terminal of the load L1, and the negative input terminal of the load L1 is connected to the fifth connector P12'. The first terminal T1 is connected to the fourth connecting joint P11'. Therefore, the fourth connector P11 ', the fifth connector P12 ' and the sixth connector P13 ' are arranged in the fire-fighting electronic equipment, and a connection relation with corresponding circuit devices is formed, so that an interface is reserved for the circuit protection device, when the fire-fighting electronic equipment is damaged by overvoltage/overcurrent, the damage caused by the overvoltage/overcurrent can be limited to the situation that the circuit protection device can be replaced on the interface in a plugging and unplugging mode, the fire-fighting electronic equipment can quickly recover normal operation, and the maintainability of the circuit for the overvoltage/overcurrent damage is improved.

It can be understood that: the positive polarity input terminal, i.e., the current inflow terminal of the load L1 circuit in the operating state, is generally connected to the positive pole of the power supply, either directly or indirectly; the negative input end is: the current outlet of the load L1 circuit in the operating state is typically connected directly or indirectly to ground or the negative pole of the power supply.

Alternatively, as shown in fig. 6, in the fire fighting electronic equipment in some embodiments, the first connection terminal T1 may be used for connecting the positive electrode of the power supply to the outside, and the first connection terminal T1 may be connected to the fifth connection terminal P12' on the circuit board PCB7 to the inside; the second connecting terminal T2 is used for connecting the negative pole of the power supply; the sixth connector P13 'is connected to the negative polarity input terminal of the load L1 on the circuit board PCB7, and the positive polarity input terminal of the load L1 is connected to the fifth connector P12'. The second terminal T2 is connected to the fourth connecting joint P11'.

Optionally, the fire fighting electronic equipment in some embodiments further includes a second substrate PCB7 physically independent from the first substrate PCB6, the second substrate being used for carrying the second set of connectors, the first terminals T1, the second terminals T2, the load L1 circuit, and the load L1. The load L1 includes: i) control circuitry, or, ii) fire emergency lighting/indicating equipment, or a combination of both.

Optionally, in the fire fighting electronic equipment in some embodiments, the circuit protection devices P1 and P2 as in any other embodiment are further included, the fourth connector P11 ', the fifth connector P12' and the sixth connector P13 'on the circuit board PCB7 are respectively fitted and correspondingly arranged with the first connector P11, the second connector P12 and the third connector P13 on the circuit board PCB6, and the first connector P11, the second connector P12 and the third connector P13 are correspondingly inserted into the fourth connector P11', the fifth connector P12 'and the sixth connector P13'.

Alternatively, the second set of connectors may be implemented as female connectors, and the first set of connectors may be implemented as corresponding male connectors. Or, the second group of connectors are all implemented as male connectors, and the first group of connectors are implemented as corresponding female connectors.

Optionally, in the fire fighting electronic device in some embodiments, the second group of connectors and the first group of connectors are implemented as plug terminals, that is, the second group of connectors and the first group of connectors are engaged with each other in a plug manner. Each of the second set of connectors includes a connecting plate 41 and a connecting pin 43 connected to each other, as shown in fig. 2, the two ends of the connecting plate 41 are symmetrically bent inward to form a pair of holes. Each of the first set of connectors is a tab-like plug P11 or the like that fits into the bent connecting piece 41. Thereby, the connectivity of the connector is further improved.

Alternatively, the connection pin 43 of the fourth socket terminal P11' is connected to the first connection terminal T1 on the second substrate PCB 7; a connection pin (not labeled) of the fifth socket terminal P12' connected to the second connection terminal T2 on the second substrate; a connection pin (not labeled) of the sixth socket terminal P13' is connected to the positive polarity input terminal of the load L1 on the second substrate PCB 7. The first wiring terminal T1 is used for being connected to the positive pole of a (configured to receive) power supply in a mode of wire connection and the like; and the second connecting terminal T2 is used for connecting the negative pole of the power supply.

Alternatively, in the fire fighting electronic device in some embodiments, the connection pin 43 of the fourth socket terminal P11' is connected to the second connection terminal T1 on the second substrate PCB 7; a connection pin of the fifth socket terminal P12' is connected to the first connection terminal T1 on the second substrate PCB 7; the connection pin of the sixth socket terminal P13' is connected to the negative input terminal of the load L1 on the second substrate PCB 7.

By configuring these terminals and plug terminals of the fire fighting electronic equipment, when the circuit protection device P1 or the circuit protection device P2 is plugged into the circuit board PCB7 of the fire fighting electronic equipment, the power entering from the terminals and the subsequent load L1 are substantially isolated, in other words, the power from the low voltage power source basically needs to pass through the circuit protection device before being used by the load. Thus, the circuit protection device effectively protects the electric shock elimination electronic equipment and the circuit board PCB7 therein against adverse factors such as overcurrent and overvoltage.

A first connection terminal T1 for connecting the positive pole of the power supply; and a second connection terminal T2 for connecting the negative pole of the power supply. Or the first connecting terminal T1 is used for connecting the negative pole of the power supply; and a second connection terminal T2 for connecting the positive pole of the power supply.

[ alternative embodiments ]

Embodiment 1. a circuit protection device, comprising:

the first group of connectors comprises a first connector, a second connector and a third connector,

2. The circuit protection device according to embodiment 1, wherein the overcurrent protection unit and the overvoltage protection unit are connected in series between the first connector and the second connector.

3. The circuit protection device according to embodiment 2, further comprising a first substrate carrying the first set of connectors, the over-current protection unit and the over-voltage protection unit.

4. The circuit protection device according to embodiment 3, wherein a) the overvoltage protection unit and the second connector, b) the overvoltage protection unit and the third connector, c) the overcurrent protection unit and the second connector, and d) the overcurrent protection unit and the third connector are respectively connected by a wire printed on the first substrate; and the number of the first and second groups,

the overcurrent protection unit and the overvoltage protection unit are connected in series between the conductive part of the first connector and the conductive part of the second connector; and the conductive part of the third connector extends from the wire between the overcurrent protection unit and the overvoltage protection unit to form the conductive part.

5. The circuit protection device of any of embodiment 4, wherein the first set of connectors protrude side by side from one side of the first substrate.

6. The circuit protection device of embodiment 5, wherein,

the first connector, the second connector and the third connector respectively and independently protrude out of the first side edge/end part of the first substrate; alternatively, the first and second electrodes may be,

the first connector, the second connector and the third connector are physically and integrally arranged on the first side edge/end portion of the first substrate.

7. The circuit protection device of embodiments 1-6, wherein the overvoltage protection unit is at least one of a transient voltage suppression diode, a voltage dependent resistor, a gas discharge tube, or a zener diode; and the number of the first and second groups,

the overcurrent protection unit is an overcurrent circuit breaker, and the overcurrent circuit breaker comprises any one of the following three components: i) a first fuse, ii) a serpentine, or iii) a first fuse and a serpentine in series.

8. The circuit protection device of embodiment 7 wherein the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the negative pole of one-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the positive pole of one-way transient voltage suppression diode connect in the second connector, the second end of first fuse connect in first connector.

9. The circuit protection device of embodiment 7 wherein the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the positive pole of one-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the negative pole of one-way transient voltage suppression diode connect in the second connector, the second end of first fuse connect in first connector.

10. The circuit protection device of embodiment 7 wherein the transient voltage suppression diode is: i) a set of anti-parallel unidirectional transient voltage suppression diodes, or ii) bidirectional transient voltage suppression diodes.

11. The circuit protection device of embodiment 10 wherein the first terminal of the transient voltage suppression diode and the first terminal of the first fuse are both connected to the third connector; the second end of the transient voltage suppression diode is connected to the second connector, and the second end of the first fuse is connected to the first connector.

12. The circuit protection device of embodiment 11, wherein the circuit protection device further comprises a second fuse; and the number of the first and second groups,

13. A fire fighting electronic device, comprising:

14. The fire protection electronic device of embodiment 13, wherein the sixth connector is connected to a positive polarity input of the load, and the fifth connector and the second terminal are both connected to a negative polarity input of the load; the first wiring terminal is connected to the fourth connector.

15. The fire protection electronic device of embodiment 13, wherein the sixth connector is connected to a negative polarity input of the load, and the first wire terminal and the fifth connector are both connected to a positive polarity input of the load; and the second wiring terminal is connected to the fourth connector.

16. The fire protection electronic device of embodiment 14 or 15, further comprising the circuit protection apparatus of any one of embodiments 1-12,

wherein, i) fourth connector, fifth connector and sixth connector with ii) first connector, second connector and third connector, the adaptation respectively and correspond to lay, first connector, second connector and third connector correspondingly peg graft in fourth connector, fifth connector and sixth connector.

17. The fire protection electronic device of embodiment 16, further comprising a second substrate for carrying the second set of connectors, the first wire terminals, the second wire terminals, and at least a portion of the load;

the load comprises a control circuit and/or is controlled by one or more of the following three of the control circuit: fire emergency lighting equipment, fire emergency indicating equipment and fire alarm system/equipment.

18. The fire fighting electronic device according to embodiment 17, wherein the second set of connectors are all female connectors, and the first set of connectors are all male connectors; alternatively, the first and second electrodes may be,

the second group of connectors are male connectors, and the first group of connectors are female connectors.

19. The fire fighting electronic device according to embodiment 18, wherein the second set of connectors and the first set of connectors are plug terminals, each of the second set of connectors includes a connecting sheet and a connecting pin, the connecting sheet is connected with the connecting pins, and two ends of the connecting sheet are symmetrically bent inwards to form a pair of holes; each of the first group of connectors is a sheet plug matched with the bent connecting sheet.

20. The fire fighting electronic device of embodiment 19, wherein the connection pin of the fourth insertion terminal is connected to the first connection terminal on the second substrate; the connecting pin of the fifth plug terminal and the second wiring terminal are connected to the negative polarity input end of the load on the second substrate; and the connecting pin of the sixth plug terminal is connected with the positive polarity input end of the load on the second substrate.

21. The fire fighting electronic device of embodiment 19, wherein the connection pin of the fourth insertion terminal is connected to the second connection terminal on the second substrate; the connecting pin of the fifth plug terminal and the first connecting terminal are connected to the positive polarity input end of the load on the second substrate; and the connecting pin of the sixth plug terminal is connected with the negative polarity input end of the load on the second substrate.

22. The fire fighting electronic device of embodiment 19, wherein the power source is a low voltage power source rated at 36 volts; the first wiring terminal is used for connecting the anode of the low-voltage power supply; the second wiring terminal is used for connecting the negative electrode of the low-voltage power supply;

the second substrate is physically independent from the first substrate.

23. A fire-fighting electronic device comprises a circuit protection device, a wire connector, a load and a connector;

the connector comprises a first connecting terminal and a second connecting terminal;

the first group of connectors can be plugged into the second group of connectors, so that the overvoltage protection unit is connected in parallel with the load, and the first wiring terminal loops back to the second wiring terminal through the overcurrent protection unit and the load.

24. The fire protection electronic device of embodiment 23, wherein the first connection terminal is connected/looped back to the second connection terminal through the overcurrent protection unit and the overvoltage protection unit.

25. The fire protection electronic device of embodiment 24, wherein the first plurality of connectors comprises a first connector, a second connector, and a third connector; the second plurality of connectors comprise a fourth connector, a fifth connector and a sixth connector;

26. The fire protection electronic device of embodiment 25, wherein the overvoltage protection unit is selected from at least one of a transient voltage suppression diode, a voltage dependent resistor, a gas discharge tube, or a zener diode; and the number of the first and second groups,

the overcurrent protection unit is an overcurrent circuit breaker.

27. The fire protection electronic device of embodiment 26, wherein the over-current circuit breaker device comprises any one of: i) a fuse, ii) a serpentine, or iii) a fuse and a serpentine in series; and

the first connector, the second connector and the third connector are all constructed into plugs; the fourth connector, the fifth connector and the sixth connector are all constructed into sockets; or

The first connector, the second connector and the third connector are all constructed into sockets; the fourth connector, the fifth connector and the sixth connector are all constructed into plugs.

28. The fire protection electronic device of embodiment 27, wherein the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the cathode of the unidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector, the anode of the unidirectional transient voltage suppression diode is connected to the second connector, and the second end of the fuse is connected to the first connector;

the sixth connector is connected to the positive polarity input end of the load;

the first wiring terminal is connected to the fourth connector, and the second wiring terminal and the fifth connector are both connected to the negative polarity input end of the load.

29. The fire protection electronic device of embodiment 27, wherein the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the negative electrode of the unidirectional transient voltage suppression diode is connected to the second connector, the positive electrode of the unidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector, and the second end of the fuse is connected to the first connector;

the sixth connector is connected to the negative polarity input end of the load, the second wiring terminal is connected to the fourth connector, and the first wiring terminal and the fifth connector are both connected to the positive polarity input end of the load.

30. The fire protection electronic device of embodiment 27, wherein the transient voltage suppression diode is a bi-directional transient voltage suppression diode; the first end of the bidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector, the second end of the bidirectional transient voltage suppression diode is connected to the second connector, and the second end of the fuse is connected to the first connector;

the sixth connector is connected to the positive polarity input end of the load, the first wiring terminal is connected to the fourth connector, and the second wiring terminal and the fifth connector are both connected to the negative polarity input end of the load.

31. The fire protection electronic device of embodiment 27, wherein the transient voltage suppression diode is a bi-directional transient voltage suppression diode; the first end of the bidirectional transient voltage suppression diode is connected to the second connector, the second end of the bidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector, and the second end of the fuse is connected to the first connector;

32. The fire protection electronic device of any one of embodiments 27-31, wherein the socket includes a connecting tab and a connecting pin that are connected to each other, and the connecting tab is symmetrically bent inward at two ends to form a pair of holes; the plug is a sheet plug matched with the bent connecting sheet.

33. The fire protection electronic device of embodiment 32, wherein the power source is a low voltage power source rated at 36 volts; the first connection terminal is configured to be connected to a positive electrode of a low-voltage power supply; the second connection terminal is configured to be connected to a negative electrode of a low-voltage power supply;

the overcurrent protection unit, the overvoltage protection unit, the first connector, the second connector and the third connector are manufactured into a first printed circuit board; the second plurality of connectors, the load, the first connecting terminal and the second connecting terminal are manufactured into a second printed circuit board; the second printed circuit board is physically independent of the first printed circuit board.

34. The fire fighting electronic device according to embodiment 33, wherein the first connector, the second connector and the third connector each independently protrude from a first side/end of the first printed circuit board, the fourth connector, the fifth connector and the sixth connector each independently are disposed on the second printed circuit board, or,

the respective conductive parts of the first connector, the second connector and the third connector are arranged on the first side edge/end part of the first substrate side by side, and the fourth connector, the fifth connector and the sixth connector are integrated into a slot on the second printed circuit board.

35. The fire protection electronic device of embodiment 34, wherein the load comprises a control circuit and/or is controlled by one or more of the following: fire emergency lighting equipment, fire emergency indicating equipment and fire alarm system/equipment.

In the 90 s of the 20 th century, improvements in a technology could clearly distinguish between improvements in hardware (e.g., improvements in circuit structures such as diodes, transistors, switches, etc.) and improvements in software (improvements in process flow). However, as technology advances, many of today's process flow improvements have been seen as direct improvements in hardware circuit architecture. Designers almost always obtain the corresponding hardware circuit structure by programming an improved method flow into the hardware circuit. Thus, it cannot be said that an improvement in the process flow cannot be realized by hardware physical modules. For example, a Programmable Logic Device (PLD), such as a Field Programmable Gate Array (FPGA), is an integrated circuit whose logic functions are determined by programming the Device by a user. A digital system is "integrated" on a PLD by the designer's own programming without requiring the chip manufacturer to design and fabricate application-specific integrated circuit chips. Furthermore, nowadays, instead of manually making an Integrated Circuit chip, such Programming is often implemented by "logic compiler" software, which is similar to a software compiler used in program development and writing, but the original code before compiling is also written by a specific Programming Language, which is called Hardware Description Language (HDL), and HDL is not only one but many, such as abel (advanced Boolean Expression Language), ahdl (alternate Hardware Description Language), traffic, pl (core universal Programming Language), HDCal, jhdul (Java Hardware Description Language), languava, Lola, HDL, pam, hard Language (Hardware Description Language), and vhigh-Language (Hardware Description Language). It will also be apparent to those skilled in the art that hardware circuitry that implements the logical method flows can be readily obtained by merely slightly programming the method flows into an integrated circuit using the hardware description languages described above.

The control unit may be implemented in any suitable way, for example, the control unit may take the form of, for example, a microprocessor or processor and a computer readable medium storing computer readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an Application Specific Integrated Circuit (ASIC), a programmable logic control unit, and an embedded micro-control unit, examples of which include, but are not limited to, the following micro-control units: the ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, the memory control unit may also be implemented as part of the control logic of the memory. Those skilled in the art will also appreciate that instead of implementing the control unit in pure computer readable program code, it is entirely possible to logically program the method steps such that the control unit performs the same functions in the form of logic gates, timers, flip-flops, switches, application specific integrated circuits, programmable logic control units, embedded micro control units, etc. Such a control unit may thus be regarded as a hardware component and the means included therein for performing the various functions may also be regarded as structures within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular transactions or implement particular abstract data types. The application may also be practiced in distributed computing environments where transactions are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, so that various optional technical features can be combined with other embodiments in any reasonable manner, and the contents among the embodiments and under various headings can be combined in any reasonable manner. Each embodiment is described with emphasis on differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two. It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

While specific embodiments of the present application have been described above, it will be understood by those skilled in the art that this is by way of illustration only, and that the scope of the present application is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and principles of this application, and these changes and modifications are intended to be included within the scope of this application.

Claims

1. A circuit protection device, comprising:

2. The circuit protection device according to claim 1, wherein the over-current protection unit and the over-voltage protection unit are connected in series between the first connector and the second connector.

3. The circuit protection device of claim 2, further comprising a first substrate carrying the first set of connectors, the over-current protection unit and the over-voltage protection unit.

4. The circuit protection device according to claim 3, wherein a) the overvoltage protection unit and the second connector, b) the overvoltage protection unit and the third connector, c) the overcurrent protection unit and the second connector, and d) the overcurrent protection unit and the third connector are respectively connected by wires printed on the first substrate; and the number of the first and second groups,

5. The circuit protection device of claim 4, wherein said first set of connectors protrude side-by-side from a side of said first substrate.

6. The circuit protection device of claim 5,

7. The circuit protection device according to any one of claims 3-6, wherein the overvoltage protection unit is at least one of a transient voltage suppression diode, a voltage dependent resistor, a gas discharge tube, or a zener diode; and the number of the first and second groups,

8. The circuit protection device of claim 7, wherein the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the negative pole of one-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the positive pole of one-way transient voltage suppression diode connect in the second connector, the second end of first fuse connect in first connector.

9. The circuit protection device of claim 7, wherein the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the positive pole of one-way transient voltage suppression diode with the first end of first fuse all connect in the third connector, the negative pole of one-way transient voltage suppression diode connect in the second connector, the second end of first fuse connect in first connector.

10. The circuit protection device of claim 7, wherein the transient voltage suppression diode is: i) a set of anti-parallel unidirectional transient voltage suppression diodes, or ii) bidirectional transient voltage suppression diodes.

11. The circuit protection device of claim 10, wherein the first terminal of the transient voltage suppression diode and the first terminal of the first fuse are both connected to the third connector; the second end of the transient voltage suppression diode is connected to the second connector, and the second end of the first fuse is connected to the first connector.

12. The circuit protection device of claim 11, wherein the circuit protection device further comprises a second fuse; and the number of the first and second groups,

13. A fire fighting electronic device, comprising:

14. The fire protection electronic device of claim 13, wherein the sixth connector is connected to a positive polarity input of the load, and the fifth connector and the second terminal are both connected to a negative polarity input of the load; the first wiring terminal is connected to the fourth connector.

15. The fire protection electronic device of claim 13, wherein the sixth connector is connected to a negative polarity input of the load, and the first wire terminal and the fifth connector are both connected to a positive polarity input of the load; and the second wiring terminal is connected to the fourth connector.

16. A fire fighting electronic device according to claim 14 or 15, further comprising a circuit protection device according to any one of claims 3 to 12,

17. A fire fighting electronic device as recited in claim 16, further comprising a second substrate for carrying the second set of connectors, the first terminals, the second terminals, and at least a portion of the load;

18. The fire protection electronic device of claim 17, wherein the second set of connectors are all female connectors, and the first set of connectors are all male connectors; alternatively, the first and second electrodes may be,

19. The fire fighting electronic device of claim 18, wherein the second set of connectors and the first set of connectors are plug terminals, each of the second set of connectors comprises a connecting plate and a connecting pin, the connecting plate is symmetrically bent inward to form a pair of holes; each of the first group of connectors is a sheet plug matched with the bent connecting sheet.

20. The fire fighting electronic device of claim 19, wherein the connection pin of the fourth connector is connected to the first connection terminal on the second substrate; the connecting pin of the fifth connector and the second wiring terminal are connected to the negative polarity input end of the load on the second substrate; and the connecting pin of the sixth connector is connected with the positive polarity input end of the load on the second substrate.

21. The fire fighting electronic device of claim 19, wherein the connection pin of the fourth connector is connected to the second connection terminal on the second substrate; a connecting pin of the fifth connector and the first connecting terminal are connected to a positive polarity input end of the load on the second substrate; and the connecting pin of the sixth connector is connected with the negative polarity input end of the load on the second substrate.

22. The fire fighting electronic device of claim 19, wherein the first connection terminal is for connection to a positive pole of a low voltage power supply; the second wiring terminal is used for connecting the negative electrode of the low-voltage power supply;

the second substrate is physically independent from the first substrate.

23. A fire-fighting electronic device is characterized by comprising a circuit protection device, a wire connector, a load and a connector;

24. The fire fighting electronic device of claim 23, wherein the first connection terminal is connected/looped back to the second connection terminal through the overcurrent protection unit and the overvoltage protection unit.

25. The fire protection electronic device of claim 24, wherein the first plurality of connectors comprises a first connector, a second connector, a third connector; the second plurality of connectors comprise a fourth connector, a fifth connector and a sixth connector;

26. The fire protection electronic device of claim 25, wherein the overvoltage protection unit is selected from at least one of a transient voltage suppression diode, a voltage dependent resistor, a gas discharge tube, or a zener diode; and the number of the first and second groups,

the overcurrent protection unit is an overcurrent circuit breaker.

27. A fire fighting electronic device as recited in claim 26, wherein said over-current breaking means comprises any one of: i) a fuse, ii) a serpentine, or iii) a fuse and a serpentine in series; and

28. The fire protection electronic device of claim 27, wherein the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the cathode of the unidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector, the anode of the unidirectional transient voltage suppression diode is connected to the second connector, and the second end of the fuse is connected to the first connector;

29. The fire protection electronic device of claim 27, wherein the transient voltage suppression diode is a unidirectional transient voltage suppression diode; the negative electrode of the unidirectional transient voltage suppression diode is connected to the second connector, the positive electrode of the unidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector, and the second end of the fuse is connected to the first connector;

30. The fire protection electronic device of claim 27, wherein the transient voltage suppression diode is a bi-directional transient voltage suppression diode; the first end of the bidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector, the second end of the bidirectional transient voltage suppression diode is connected to the second connector, and the second end of the fuse is connected to the first connector;

31. The fire protection electronic device of claim 27, wherein the transient voltage suppression diode is a bi-directional transient voltage suppression diode; the first end of the bidirectional transient voltage suppression diode is connected to the second connector, the second end of the bidirectional transient voltage suppression diode and the first end of the fuse are both connected to the third connector, and the second end of the fuse is connected to the first connector;

32. The fire protection electronic device of any one of claims 27-31, wherein the socket includes a connecting tab and a connecting foot connected to each other, the connecting tab being bent symmetrically inward at both ends to form a pair of holes; the plug is a sheet plug matched with the bent connecting sheet.

33. The fire protection electronic device of claim 32, wherein the first terminal is configured to connect to a positive pole of a low voltage power source; the second connection terminal is configured to be connected to a negative electrode of a low-voltage power supply;

the overcurrent protection unit, the overvoltage protection unit, the first connector, the second connector and the third connector are integrated in/manufactured into a first printed circuit board; the second plurality of connectors, the load, the first connecting terminal and the second connecting terminal are integrated with/fabricated into a second printed circuit board; the second printed circuit board is physically independent of the first printed circuit board.

34. The fire fighting electronic device of claim 33, wherein the first connector, the second connector, and the third connector each independently protrude from a first side/end of the first printed circuit board, the fourth connector, the fifth connector, and the sixth connector each independently are disposed on the second printed circuit board, or,

the respective conductive parts of the first connector, the second connector and the third connector are arranged on the first side edge/end part of the first printed circuit board side by side, and the fourth connector, the fifth connector and the sixth connector are integrated into a slot on the second printed circuit board.

35. The fire protection electronic device of claim 34, wherein the load comprises a control circuit and/or is controlled by one or more of the following: fire emergency lighting equipment, fire emergency indicating equipment and fire alarm system/equipment.