KR101968194B1 - Expandable Intrinsic Safety Anti-Explosion Lighting Luminaire - Google Patents

Abstract

The luminaire according to the present embodiment is an intrinsically safe explosion-proof luminaire having a plurality of expandable channels, and includes a power supply unit for providing driving power, a distribution circuit for receiving driving power and dividing the channel by channels, and driving power divided for each channel. It includes an energy limiting circuit to block abnormal power supply, and an optical providing module for providing light and a driver for driving the optical providing module by receiving driving power divided by channels. The distribution circuit and the energy limiting circuit are intrinsically safe. Limit the driving power provided to match.

Description

Expandable Intrinsic Safety Anti-Explosion Lighting Luminaire}

The present invention relates to an expandable intrinsically safe explosion proof lamp.

By intrinsically safe circuit is meant a circuit that limits energy such that an electrical spark or high temperature that occurs under normal operation of the circuit and a specific fault condition cannot cause ignition in the atmosphere of the explosive gas. Intrinsically safe circuits are used in zones 0 and 1 as well as in hazardous areas. Location 0 is an area where there is a constant risk of explosion, such as an area where explosive gases or vapors continue to be present in explosive concentrations, such as inside tanks, pipelines or equipment.

In contrast, areas where explosive gases may be present above dangerous levels during normal operation, or due to repair, maintenance, etc. are referred to as Zone 1, where flammable, volatile liquids or gases are handled, treated or used. Dangerous goods are usually confined in a closed container or a closed system, so if an accident breaks the container or system, or in the event of improper operation of the facility, the area is likely to be spilled. The area where can exist is called Zone 2.

Class 0 sites must use electrical or electronic equipment with intrinsically safe circuits. Class 0 locations are extremely high compared to other places with an explosion risk. Therefore, intrinsically safe explosion-proof restricts the current value of the electronic device or the like and reduces the heat generation of the electronic device to a high temperature in order to lower the probability of explosion possible. Therefore, according to the prior art, the current lighting lamps used in the 0 type places are limited to the portable lanterns, and thus do not obtain sufficient luminous flux. Composite explosion-proof and pressure-resistant explosion-proof can be used only in one or two places, so they cannot be used in zero place, but intrinsically safe explosion-proof can be used in all places.

Lanterns equipped with intrinsically safe circuits (hereinafter referred to as intrinsically safe lanterns) according to the prior art have low luminance as compared to lanterns used in everyday life because they provide light at a wide irradiation angle to prevent light ignition. Nevertheless, when trying to work in the 0 place, it could not provide sufficient luminous flux due to the limitation of energy use, and had to carry only a portable lantern despite difficulty in securing visibility.

The present embodiment satisfies the explosion-proof provision to be utilized in the first and second places as well as the zero places, and one of the main objectives is to provide an expandable lamp and a method of manufacturing the same to provide sufficient luminous flux.

The luminaire according to the present embodiment is an intrinsically safe explosion-proof luminaire having a plurality of expandable channels, and includes a power supply unit for providing driving power, a distribution circuit for receiving driving power and dividing the channel by channels, and driving power divided for each channel. It includes an energy limiting circuit to block abnormal power supply, and an optical providing module for providing light and a driver for driving the optical providing module by receiving driving power divided by channels. The distribution circuit and the energy limiting circuit are intrinsically safe. Limit the driving power provided to match.

The luminaire according to the present embodiment is an intrinsically safe explosion-proof luminaire having a plurality of expandable channels, and includes a power providing unit located in a first type region and a light providing module located in a type 0 region. Is added and extended.

The intrinsically safe explosion-proof luminaire according to the present embodiment includes a housing in which an internal region is divided by a partition wall, a large current circuit located in a first internal region in a divided housing, and a small current located in a second internal region in a divided housing. And a light providing module that is driven by the driving circuit unit and a light providing module to provide light, wherein the light providing module is expandable by adding a plurality of light providing modules.

Since the luminaire according to the present embodiment satisfies the intrinsic safety explosion proof regulations, the luminaire can be used even at zero places. In addition, since the luminaire according to the present embodiment is expandable, an advantage is provided that the light providing module can be expanded to increase the total luminous flux as necessary.

1 is a block diagram showing an outline of a luminaire according to the present embodiment.
2 is a view showing an expandable form by inserting a light providing module in the socket-type housing.
Figure 3 (a) is a view showing an overview of the light providing module, Figure 3 (b) is a view showing an overview of an embodiment of inserting and extending the light providing module in the housing.
4 is a view illustrating an extended form of a light providing module in a tube-type housing.
4 is a view illustrating a form in which a light providing module is expandably mounted in a tube-type housing.
5 is a view for explaining an explosion-proof application embodiment of the luminaire according to the present embodiment.
6 is a view showing another embodiment of the explosion-proof application of the luminaire according to the present embodiment.
7 is a perspective view showing a state in which the intrinsically safe explosion-proof lamp according to the present embodiment is assembled.
8 is an exploded perspective view of a part of an intrinsically safe explosion proof lamp according to the present embodiment.
9 is a diagram schematically illustrating circuit arrangement and power signal supply in a housing.
10 is a diagram showing an outline of an embodiment of the light providing module 320.
11 is a circuit diagram of a light providing module.

Description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as limited by the embodiments described in the text. That is, since the embodiments may be variously modified and may have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea.

On the other hand, the meaning of the terms described in the present application should be understood as follows.

Singular expressions should be understood to include plural expressions unless the context clearly indicates otherwise, and terms such as "include" or "have" refer to features, numbers, steps, operations, components, parts, or parts thereof described. It is to be understood that the combination is intended to be present, but not to exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

Each step may occur differently from the stated order unless the context clearly dictates the specific order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms such as those defined in the commonly used dictionaries should be construed to be consistent with the meanings in the context of the related art and should not be construed as having ideal or overly formal meanings unless expressly defined in this application. .

1 is a block diagram showing an outline of a luminaire according to the present embodiment. Referring to FIG. 1, the luminaire according to the present embodiment includes a power supply, an AC / DC converter 100, a distribution circuit 210, an energy limiting circuit 220, and a light supply module driver. A safety light driver 310, a light emitting device cluster 320, and a housing H are included. Each element performs the following functions:

The power source may be an AC power source or a DC power source. When the power source S is an AC power source, the AC / DC converter 100 receives an AC voltage and converts it into a DC voltage. 100 outputs a direct current of several tens of volts or less. In another embodiment, the luminaire may operate by receiving a DC voltage.

The distribution circuit 210 receives the output voltage of the AC / DC converter 100 and distributes the voltage to each energy limiting circuit 220. The distribution circuit 210 receives power from the AC-DC converter and distributes and provides power for driving for each channel. The energy limiting circuit 220 cuts off the abnormal power supply to the driver 310 and the light providing module 320 which are loads. For example, the energy limiting circuit 220 limits the power when a short circuit or a disconnection occurs in the driver 310 and the light providing module 320 which are loads thereof. In one embodiment, the energy limiting circuit 220 may include a barrier circuit such as a zener diode barrier, a thyristor barrier, or the like.

The distribution circuit 210 and the energy limiting circuit 220 may prevent the explosion from being generated by the energy provided to the driver 310 and the light providing module 320 which are located at the zero place where the risk of explosion always exists. The energy provided to 310 and light providing module 320 is limited. For example, the distribution circuit 210 and the energy limiting circuit 220 limit the current and voltage provided to the driver 310 and the light providing module 320 to comply with intrinsically safe explosion regulations.

In an embodiment not shown, the luminaire 1 may further comprise a converter for converting the magnitude of the voltage provided according to the output voltage of the AC / DC converter 100 and / or the specification of the LED package. .

The light emitting module driver 310 limits the voltage and / or current provided to the light providing module to meet intrinsic safety standards, and includes a fuse and / or resistor for the zener diode overcurrent blocking that clamps the voltage. It may include. The light providing module driver 310 may operate under voltage control or may operate under current control.

The light providing module 320 includes a light emitting device. In one embodiment, the light emitting device may include a light emitting diode (LED) or an organic light emitting diode (OLED), and other devices for generating light. The light emitting device uses an optical source that satisfies the KS C IEC 60079-28 optical emission standard for the protection of equipment and transmission systems using optical radiation in an explosive atmosphere.

The housing (H) of the luminaire installed in the first place (zone 1) is composed of explosion-proof or compound explosion-proof (pressure-resistant / safety / mold), and explosion-proof explosion-proof can be designed with high output, but heavy and expensive . Composite explosion proof can be designed lightly but high power is not possible. In addition, explosion-proof or compound explosion-proof cannot be used in 0 places. However, when designed as an intrinsically safe circuit, it is possible to design a luminaire capable of light and high output, and can be used in class 1 and class 2 as well as class 0.

The luminaire 1 according to this embodiment has a plurality of channels Ch.1, Ch.2, Ch.3, ..., Ch.n. The light providing module is inserted into the luminaire 1 so that the number of channels can be expanded or reduced, and the distribution circuit 210 and the energy limiting circuit 220 correspond to the expanded or reduced channels when the channels are expanded or contracted. And power each channel to meet intrinsically safe regulations.

In one embodiment, the luminaire housing (H) may be implemented as a socket type in which the light providing module 320 is inserted into the socket to mount the light providing module 320. 2 is a view showing an expandable form by inserting the light providing module 320 in the socket-type housing (H), the AC-DC converter 100, the distribution circuit 210 and the barrier circuit 220 and the light The providing module driver 310 and the light providing module 320 may be separately installed as illustrated in FIG. 2, and may be included in the enclosure of the pressure-resistant explosion-proof or the composite explosion-proof according to the risk level of the installation location.

3A is a diagram illustrating an outline of the light providing module driver 320. The light providing module may include an LED package, a lens for diffusing or focusing the light provided by the LED, and a heat sink for dissipating heat. The light providing module driver 320 shown in FIG. 3 (a) is expandable to be inserted into the socket as shown in FIG. 3 (b).

4 is a view illustrating a form in which the light providing module 320 is mounted in the tube-type housing H to be expandable. As illustrated in FIG. 4, the light providing module 320 may be inserted into the housing H in the form of a tube and expandable, and may provide as much light flux as necessary.

5 is a view for explaining an explosion-proof application embodiment of the luminaire according to the present embodiment. Referring to FIG. 5, the luminaire according to the illustrated embodiment includes a first portion P1 including an AC-DC converter 100 and a distribution circuit 210, a light providing module driver 310, and a light providing module 320. It includes a second portion (P2) including).

The AC-DC converter 100 and the distribution circuit 210 included in the first portion P1 are provided with a high voltage or a high current as compared with the elements included in the second portion P2, and a flammable atmosphere from these electrical elements. Probably provide flames, flames, etc. Therefore, the first portion P1 is disposed at one zone (zone 1) spaced apart from the normally explosive zone 0 (zone 0), and is installed in accordance with the explosion-proof regulations corresponding to the first zone.

For example, the first portion P1 may be installed to meet the explosion-proof explosion proof Ex d. Explosion-proof explosion-proof means that when a flammable gas explodes inside a container, the container can withstand the explosion pressure and the sparks generated during the explosion cannot be ignited by dangerous gases existing outside the container through gaps or structural joints. It is a structure designed to withstand the explosion pressure generated and to prevent ignition even by the temperature of the surface of the structural container.

As another example, the first portion P1 is installed so as to comply with the pressure explosion Ex p specification. Pressure explosion refers to a structure in which an inert gas such as air or nitrogen is blown into a vessel to maintain a pressure of 50 pa (5 mm H 2 O) higher than an external pressure so that flammable gas or vapor cannot be introduced into the vessel. Non-explosion-proof electrical equipment is used inside the vessel of pressure-explosion-proof structure, so if a flammable gas or vapor enters the vessel due to a malfunction of the operation or an inert gas supply, the alarm is activated (Z Purge, alarm type). ) Install the protection device to stop the operation of the device automatically (X Purge).

In another example, the first portion P1 is installed to comply with the mold explosion proof Ex m specification. Mold explosion protection provides thermal stability by blocking the interior of the container with a solid, permanent protection of maintenance-free equipment.

The second part P2 is located at the 0 type place where the explosive gas or vapor is continuously present in the explosive concentration, such as in the tank, in the pipeline or in the apparatus. Therefore, the second part P2 is installed to comply with the intrinsic safety explosion proof (Ex ia, ib) regulations, which are explosion-proof regulations corresponding to the zero place. Intrinsically Safe Explosion-Proof is designed to provide the energy of a flame so that an electrical flame generated in an electrical circuit does not ignite flammable gases or vapors under the test conditions specified in IEC 60079-11, the International Standard for Explosion-proof. Explosion-proof structure consisting of an intrinsically-safe circuit. That is, intrinsically safe explosion-proof prevents ignition by lowering the energy since the explosive gas is ignited and needs to be given a certain amount of energy by heat or electric flame to cause an explosion.

Accordingly, the current and voltage provided to the light providing module driver 310 and the light providing module 320 included in the second portion P2 may be used to control flammable gas or vapor at the zero place where the second portion P2 is located. It is controlled so that it does not ignite.
6 is a view showing another embodiment of the explosion-proof application of the luminaire according to the present embodiment. Referring to FIG. 6, the luminaire according to the embodiment illustrated in FIG. 6 includes a part A (Pa), an energy limiting circuit 220, and a light providing module including an AC-DC converter 100 and a distribution circuit 210. A C part Pc including the driver 310 and a B part Pb including the light providing module 320 are included. The part A is the same as or similar to the AC-DC converter 100 and the distribution circuit 210 described in the above-described embodiment, and thus a detailed description thereof will be omitted.
The B-th part Pb includes the light provision module 320, and provides light to 0 kind place. Therefore, it is designed as an intrinsically safe circuit so as not to ignite explosive gases and vapors, so as to comply with intrinsic safety explosion protection regulations (Ex ia, ib).
The C part Pc is provided with a current or voltage equal to or greater than that of the B part Pb, and is provided with a current or voltage equal to or less than the current or voltage provided to the A part Pa. Therefore, it is disposed in one kind of place such as part A, and meets the explosion-proof regulation of explosion-proof explosion-proof pressure (Ex d), pressure explosion (Ex p) and mold explosion-proof (Ex m). It is designed to.
In one embodiment, the C part Pc may be located in the same housing as the A part Pa, and may be designed and installed according to the same explosion protection regulations as the A part Pa. In another embodiment, the C part Pc may be located in a housing different from the A part Pa so that the C part Pc may be designed and installed according to different explosion protection regulations with the A part Pa. In another embodiment, the C part Pc is located in the same housing as the A part Pa, but may be designed and installed according to different explosion protection regulations than the A part Pa.

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Embodiment

Hereinafter, embodiments of the present embodiment will be described with reference to FIGS. 7 to 11. 7 is a perspective view showing a state in which the intrinsically safe explosion-proof lamp according to the present embodiment is assembled. 8 is an exploded perspective view of a part of an intrinsically safe explosion proof lamp according to the present embodiment. 9 is a diagram schematically illustrating circuit arrangement and power signal supply in a housing. 7 to 9, the intrinsically safe explosion-proof luminaire 1 according to the present embodiment includes a housing H in which an inner region is divided by a partition wall W, and a first inner region H1 in the divided housing. The barrier circuit 220 and the light providing module driver 310 and the light providing module driver 310 which include a large current circuit located at a second position and a small current circuit located at a second internal region H2 in the divided housing. The light providing module 320 is driven to provide light, and the light providing module is expandable by adding a plurality of light providing modules.

The housing H is divided into a first inner region H1 and a second inner region H2 by the partition wall W. As shown in FIG. The housing H has a circuit mounted therein, and the cover C is coupled by a coupling device such as a bolt or a hexagonal bolt.

In one embodiment, the housing H is formed so as to comply with the explosion-proof explosion-proof regulations to withstand the pressure formed by the explosion even if an explosion occurs inside the housing. The explosion pressure inside the housing generally corresponds to a pressure of 6-7 bar. The housing according to this embodiment is selected and designed to withstand a pressure of 30 bar or more, which is four times or more of the explosion pressure. In one embodiment, the housing (H) and the cover (C) may be formed of an aluminum material. O-rings for waterproofing are formed around the first inner region H1 and the second inner region H2, and the waterproofing state is maintained even at a pressure of 1.5 times or more of the internal explosion pressure by the O-ring. . In an embodiment not shown, the housing H is formed to conform to the mold explosion proof regulations filled with the filling.

The explosion-proof cable gland G1 and the explosion-proof cable gland G2 are coupled to the housing H. The power line may be led into the first inner region H1 through the explosion-proof cable gland G1, and the power line is provided from the second inner region H2 to the light providing module through the explosion-proof cable gland G2. can do.

In an embodiment, the first inner region H1 and the second inner region H2 divided by the partition wall W may be connected to each other by a through hole. The through hole can be closed with an explosion proof bushing. Circuits positioned in the first inner region H1 and circuits positioned in the second inner region H2 may be electrically connected to each other through a wire passing through the through hole.

High current circuits may be included in the first internal region H1. For example, the high current circuit may include an AC-DC converter 100 and a distribution circuit 210. If the power supplied from the outside is a direct current, the distribution circuit 210 may be included in the first internal region H1.

Small current circuits may be included in the second internal region H2. As an example, the small current circuit includes an energy limiting circuit 220 and a light providing module driver 310. It should be noted that the high current circuit and the low current circuit are named on the basis of the large and small amount of current flowing in the unit circuit, and not the sum of the currents flowing through the entire circuits.

Intrinsically safe explosion proof standard energy limiting circuit 220 should be located in a non-hazardous location. Therefore, the battery is divided into a first internal region H1 in which a high current circuit having high current flows and a second internal region H2 in which the energy limiting circuit 220 is located, and stored in a housing that satisfies the explosion-proof explosion-proof regulations. Deployed in the area.

Although only three light providing module drivers 310 are illustrated in FIG. 9, this is only an example, and may further include three or more light providing module drivers 310, each to supply power to the light providing modules. Can be extended.

10 is a diagram showing an outline of an embodiment of the light providing module 320. 11 is a circuit diagram of a light providing module. 10 and 11, the light providing module 320 receives a driving power from the light providing module driver 310 to provide light and a diffuser to diffuse the light provided by the light emitting device. 324 and a case 326 in which the light emitting element is housed. In one embodiment, the light providing module 320 includes a directing direction fixing part 328 formed on one side and the other side of the case to fix the direction of the light providing module.

In the light providing module 320, four light emitting devices 322 formed by connecting four in series are connected in parallel to form one channel. If a series branch fails and current draws in another series branch, the fuse blows to eliminate the risk of current draw. Furthermore, the distribution circuit 210 cuts off the power when current draw occurs to prevent the current from being drawn to another parallel branch or another channel.

The diffuser 324 diffuses the light provided by the light emitting device 322. In one embodiment, since the light provided by the light emitting device 322 is directive, the illuminance may be high in the directing direction, but the illuminance may be dark in the adjacent direction away from the directing direction. The diffuser 324 diffuses the light provided by the light emitting element 322 and provides light to a direction to which the light is directed and its adjacent direction.

The case 326 accommodates the light emitting element 322 and the diffuser 324. In an embodiment, the case 326 may be integrally formed with a heat sink that absorbs and radiates heat provided by the light emitting element 322 to emit light to perform a heat sink function. As shown in FIG. 10 (b), the case may provide light by being directed in the vertical direction, and may be inclined to 60 degrees to provide light as shown in FIG. 10 (c). As shown in FIGS. 10 (b) and 10 (c), the case 326 may be formed with an angle scale to change the direction in which the light providing module 320 is directed to left and right by 60 degrees. The government 328 may fix the direction in which the light providing module 320 is directed by using a fixing screw.

Light providing module 320, such as intrinsically safe explosion-proof according to the present embodiment is located at 0 places where explosion risk is always present. In contrast, the housing H is located in one or two places where the risk of explosion is relatively low. The light providing module located in the 0 type place satisfies the intrinsically safe explosion-proof regulation, which is a standard for the electronic devices arranged in the 0 type place. On the contrary, since the housing H is located at one place or two places where the explosion risk is relatively low, the housing H satisfies the mold explosion-proof or explosion-proof explosion-proof standard.

The intrinsically safe explosion-proof lamp 1 according to the present embodiment may further include a plurality of light providing modules 320.

Although described with reference to the embodiments shown in the drawings to aid the understanding of the present invention, this is an embodiment for the implementation, it is merely exemplary, those skilled in the art from various modifications and equivalents therefrom It will be appreciated that other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

100: AC-DC converter 210: distribution circuit
220: energy limit circuit 310: light providing module driver
320: light providing module

Claims (13)

An intrinsically safe explosion proof luminaire having a plurality of expandable channels, wherein the intrinsically safe explosion proof luminaire is:
A power supply unit providing driving power;
A distribution circuit receiving the driving power and dividing the channel for each channel;
An energy limiting circuit for blocking abnormal power supply with respect to the driving power divided for each channel;
A light providing module for providing light and
A driver for driving the light providing module by receiving driving power divided for each channel;
The distribution circuit and the energy limiting circuit limit driving power provided to comply with the intrinsically safe explosion proof regulations,
The intrinsically safe explosion-proof luminaire further comprises a housing having a plurality of sockets,
The intrinsically safe explosion-proof luminaire has a plurality of the light providing module is inserted into the socket and expandable, respectively,
The energy limiting circuit limits the power provided to each of the light providing modules when the plurality of the light providing modules are respectively inserted into or removed from the socket to comply with intrinsically safe explosion proof regulations,
The energy limiting circuit includes a barrier circuit, and the barrier circuit shuts off power when any one of a short circuit and a disconnection occurs in the driver and each light providing module,
The power supply unit, the distribution circuit, the energy limiting circuit and the light providing module driver are housed in a second housing,
The light providing module
A plurality of serial branches connected in parallel,
A fuse which is disconnected when any one of short circuit and disconnection occurs in at least one of the series branches,
The light emitting elements having the series are formed by being connected in series,
And said energy limiting circuit limits the energy provided to said light providing module such that an explosion does not occur by the energy provided to said light providing module. The method of claim 1,
The intrinsically safe explosion proof luminaire further comprises an outer housing in the form of a tube. delete An intrinsically safe explosion proof luminaire having a plurality of expandable channels, wherein the intrinsically safe explosion proof luminaire is:
A power provider located in a first type region;
A distribution circuit receiving the power provided by the power provider and dividing the channel for each channel;
A light providing module located in a type 0 region;
A housing having a plurality of sockets and containing the light providing module;
The intrinsically safe explosion-proof luminaire is expandable by being electrically connected to the power providing unit by inserting a plurality of the light providing module into the socket, respectively,
A driver for driving the light providing module by receiving driving power divided for each channel;
An energy limiting circuit for limiting power provided to each of said light providing modules to comply with intrinsically safe explosion protection regulations when said plurality of said light providing modules are each inserted into or removed from said socket;
The energy limiting circuit includes a barrier circuit, and the barrier circuit shuts off power when any one of a short circuit and a disconnection occurs in the driver and each light providing module,
The power supply unit, the distribution circuit, the energy limiting circuit and the driver are housed in a second housing and located in the first type region,
The light providing module
A plurality of serial branches connected in parallel,
A fuse which is disconnected when any one of short circuit and disconnection occurs in at least one of the series branches,
The light emitting device having the series is formed by being connected in series,
And the energy limiting circuit limits the energy provided to the light providing module such that an explosion does not occur by the energy provided to the light providing module. delete delete delete A driving circuit unit including a housing having an internal region divided by a partition wall, a large current circuit positioned in a first internal region in the divided housing, and a small current circuit located in a second internal region in the divided housing;
A light providing module housing having a plurality of sockets; And
And a light providing module driven by the driving circuit unit to provide light.
Each of the plurality of light providing modules is expandable by being electrically connected to the driving circuit part by being inserted into the socket.
An energy limiting circuit located in the second inner region and restricting power provided to each light providing module when the light providing module is respectively inserted into or removed from the socket to comply with intrinsically safe explosion protection regulations; And
And a light providing module driver configured to receive the driving power divided for each channel to drive the light providing module.
The energy limiting circuit includes a barrier circuit, and the barrier circuit shuts off power when any one of a short circuit and a disconnection occurs in the driver and each light providing module,
The light providing module
A plurality of serial branches connected in parallel,
A fuse which is disconnected when any one of short circuit and disconnection occurs in at least one of the series branches,
The light emitting elements having the series are formed by being connected in series,
And said energy limiting circuit limits the energy provided to said light providing module such that an explosion does not occur by the energy provided to said light providing module. The method of claim 8,
The driving circuit portion is located at any one of the first type place and the second type place,
The light providing module is intrinsically safe explosion-proof luminaires located in place of type 0. The method of claim 8,
The high current circuit includes at least one of an alternating current DC converter and a distribution circuit,
And said small current circuit comprises an optical provision module driver. delete delete delete

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