WO2022108246A1

WO2022108246A1 - Led lighting system for plant growth having leakage current limiting function

Info

Publication number: WO2022108246A1
Application number: PCT/KR2021/016478
Authority: WO
Inventors: 이호석
Original assignee: (주)비젼테크
Priority date: 2020-11-19
Filing date: 2021-11-12
Publication date: 2022-05-27
Also published as: KR20220068393A

Abstract

The present invention relates to an LED lighting system that is for plant growth and has a leakage current limiting function, wherein leakage current is limited by using differences in area ratio between conductors, such that application of a waterproof structure is unnecessary. Therefore, an additional increase in unit cost for applying the waterproof structure is not required, and the LED lighting system can be safely used without the risk of electric shock accidents caused by short circuits, even in environments necessarily having a lot of moisture.

Description

LED lighting system for plant growth with leakage current limiting function

The present invention relates to LED lighting technology, and more particularly, to an LED lighting system for plant growth having a leakage current limiting function.

LED lighting equipment for plant growth used in smart farms generally has a waterproof structure to prevent electric shock accidents caused by short circuits that can be caused in a humid environment. works

If the waterproof structure is not applied to the LED lighting equipment for plant growth, the unit price of the product can be reduced, but there is a high possibility of causing human and material damage due to an electric shock accident due to a short circuit.

In Republic of Korea Patent Registration No. 10-1625493 (2016.05.24), previously filed by the present applicant, it is described that the leakage current decreases as the difference in area ratio between two flat-plate-shaped conductors increases.

The present inventors studied a technology that does not require the application of a waterproof structure by limiting the leakage current by applying the phenomenon that the leakage current becomes small as the difference in the area ratio between the conductors in the prior application technology increases to the LED lighting technology for plant growth.

An object of the present invention is to provide an LED lighting system for plant growth having a function of limiting leakage current that does not require application of a waterproof structure by limiting leakage current using a difference in area ratio between conductors.

According to an aspect of the present invention for achieving the above object, an LED lighting system for plant growth having a leakage current limiting function includes an LED lamp (Lamp) in which a plurality of LEDs (Light Emitting Diodes) are arranged; a SMPS (Switched Mode Power Supply) for converting AC power into DC power and supplying the converted DC power to the LED lamp; a terminal block for supplying AC power applied through an AC power transmission line to the SMPS; A first leak current limiter installed between the LED lamp and the SMPS to limit the leakage current, wherein the leakage current limiter is connected between the (+) output terminal of the SMPS and the (+) electrode of the LED lamp a conductor; A second conductor that is connected between the (-) output terminal of the SMPS and the (-) electrode of the LED lamp and has an area of 4 times or more of the area of the first conductor to limit the leakage current by using the difference in the conductor area is included.

According to an additional aspect of the present invention, the leakage current limiter is branched from the (-) output terminal of the SMPS to serve as a ground, but may further include a third conductor having an area four times or more of the area of the first conductor. .

According to an additional aspect of the present invention, the connection terminal block includes a primary side phase voltage line (R line), a neutral line (N line), a ground line (G line) of an AC power transmission line, and a secondary side phase voltage line (R line) of an AC power transmission line , an insulator terminal block having an R conductor electrode connecting each of the neutral wire (N line) and the ground line (G line) at both ends, the N conductor electrode, and the G conductor electrode being mounted therein; a conductor inner case having an insulator terminal block inserted and coupled thereto and partially in contact with an N conductor electrode mounted inside the insulator terminal block to expand an area of the N conductor electrode to limit leakage current; and an insulator outer case coupled to surround the inner case of the conductor into which the insulator terminal block is inserted.

According to an additional aspect of the present invention, a cut-out groove is formed so that a part of the N-conductor electrode is exposed by partially cutting the side of the insulator terminal block on the side where the N-conductor electrode mounted inside the insulator terminal block is located, and the insulator terminal block A part of the side surface of the inner case of the conductor on the side where the N conductor electrode mounted inside is cut and folded inward to form a bent portion, and when the insulator terminal block is inserted into the inner case of the conductor by sliding the insulator terminal block and combined, it is formed on the side of the insulator terminal block A portion of the inner case of the conductor is cut into the cutout and the bent portion is inserted, and the bent portion comes into contact with a part of the N conductor electrode exposed through the cutout, so that the area of the N conductor electrode is the area of the inner case of the conductor. expanded as much as

According to a further aspect of the present invention, the leakage current limiter may be implemented to be built into the LED lamp.

The LED lighting system for plant growth having a leakage current limiting function according to the present invention limits the leakage current by using the difference in the area ratio between the conductors, so that the application of the waterproof structure is unnecessary, so an additional increase in the unit price for applying the waterproof structure is not required, It has the effect that it can be used safely without the risk of electric shock due to short circuit even in an environment where there is only a lot of moisture.

1 is a block diagram showing the configuration of an embodiment of the LED lighting system for plant growth having a leakage current limiting function according to the present invention.

Figure 2 is an exploded perspective view showing the configuration of an embodiment of the connection terminal block of the LED lighting system for plant growth having a leakage current limiting function according to the present invention.

Hereinafter, the present invention will be described in detail so that those skilled in the art can easily understand and reproduce it through preferred embodiments described with reference to the accompanying drawings. While specific embodiments are illustrated in the drawings and the related detailed description is set forth, they are not intended to limit the various embodiments of the present invention to a specific form.

In the description of the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the embodiments of the present invention, the detailed description thereof will be omitted.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be

On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

1 is a block diagram showing the configuration of an embodiment of the LED lighting system for plant growth having a leakage current limiting function according to the present invention. As shown in FIG. 1 , the LED lighting system 100 for plant growth having a leakage current limiting function according to this embodiment includes an LED lamp 110 and a SMPS (Switched Mode Power Supply) 120 . And, it includes a terminal block (Terminal Block) 130, and a leakage current limiter (Leakage Current Restricter) (140).

LED lamp (Lamp) 110 is a plurality of LED (Light Emitting Diode) (111) is arranged. For example, monochromatic LEDs such as blue light LEDs having a wavelength of 430 to 460 nm and red LEDs having a wavelength of 630 to 680 nm are arranged in a specific ratio on the substrate of the LED lamp 110 to be implemented as a module.

Meanwhile, although not shown in the drawing, the LED lamp 110 may include a timer for setting the lighting time, an operation switch for turning on/off the lighting, a driving circuit for driving the LED, and the like.

The SMPS (Switched Mode Power Supply) 120 converts AC power into DC power, and supplies the converted DC power to the LED lamp 110 . The SMPS 120 converts AC power to DC power using a switching control method using a switching transistor or the like, and controls the on/off time of the switching element to stabilize the output.

The terminal block 130 supplies AC power applied through the AC power transmission line to the SMPS 120 . At both ends of the connection terminal block 130, the primary side phase voltage line (R line) 210a, the neutral line (N line) 210b, the ground line (G line) 210c, and the secondary side phase voltage line (R line) of the AC power transmission line 220a , a neutral wire (N line) 220b , and a ground wire (G line) 220c are respectively connected, and AC power applied through an AC power transmission line is supplied to the SMPS 120 .

The leakage current limiter (Leakage Current Restricter) 140 is installed between the LED lamp 110 and the SMPS 120 to limit the leakage current. At this time, the leakage current limiter 140 may be implemented as a built-in type built into the LED lamp 110 or may be implemented as an external type. Meanwhile, the leakage current limiter 140 may include a first conductor 141 and a second conductor 142 .

The first conductor 141 is connected between the (+) output terminal of the SMPS 120 and the (+) electrode of the LED lamp 110 . For example, the first conductor 141 may be a flat conductor, and the material may be a metal such as copper.

The second conductor 142 is connected between the (-) output terminal of the SMPS 120 and the (-) electrode of the LED lamp 110 , and has an area four times or more of the area of the first conductor 141 to be a conductor The area difference is used to limit the leakage current. For example, the second conductor 142 may be a flat conductor, and the material may be a metal such as copper.

As can be seen from the contents described in Korean Patent Registration No. 10-1625493 (2016.05.24) mentioned above, if the area of the conductor connected to the (-) terminal is larger than that of the conductor connected to the (+) terminal of the power supply, The larger the leakage current is, the smaller the leakage current is, so the leakage current limiter ( 140) to limit the leakage current.

By implementing in this way, the LED lighting system for plant growth having a leakage current limiting function according to the present invention limits the leakage current by using the area ratio difference between the conductors, so that it is unnecessary to apply a waterproof structure, so an additional unit price increase for the waterproof structure application It is not required and it can be used safely without risk of electric shock due to short circuit even in an environment where there is only a lot of moisture.

Meanwhile, according to an additional aspect of the invention, the leakage current limiter 140 may further include a third conductor 143 . The third conductor 143 is branched from the (-) output terminal of the SMPS 120 to serve as a ground, but may be implemented to have an area four times or more of the area of the first conductor 141 . For example, the third conductor 143 may be a flat conductor, and the material may be a metal such as copper.

In this case, the larger the area of the third conductor 143 compared to the area of the second conductor 142 is, the more advantageous it is. The larger the conductor area, the smaller the internal resistance becomes than the resistance of the human body. Even if a leakage current occurs, the leakage current does not flow into the human body, but flows to the ground through the third conductor 143 or to the third conductor 143. Leakage current can stay and prevent electric shock to the human body.

On the other hand, the first conductor 141, the second conductor 142, and the third conductor 143 disposed inside the leakage current limiter 140 are formed by an insulating barrier rib (not shown) or a shielding member (not shown in the drawing). It is preferable to be electrically isolated from each other by means of (not shown).

Meanwhile, the first conductor 141 , the second conductor 142 , and the third conductor 143 disposed inside the leakage current limiter 140 are stacked in a stacked structure to form the leakage current limiter 140 . It may be implemented to miniaturize the size of .

Figure 2 is an exploded perspective view showing the configuration of an embodiment of the connection terminal block of the LED lighting system for plant growth having a leakage current limiting function according to the present invention. As shown in FIG. 2 , the connection terminal block 130 may include an insulator terminal block 131 , a conductor inner case 132 , and an insulator outer case 133 .

The insulator terminal block 131 includes a primary side phase voltage line (R line) 210a, a neutral line (N line) 210b, a ground line (G line) 210c of the AC power transmission line, and a secondary side phase voltage line ( An R conductor electrode 131a, an N conductor electrode 131b, and a G conductor connecting the R line) 220a, the neutral line (N line) 220b, and the ground line (G line) 220c at both ends, respectively. The sieve electrode 131c is mounted therein.

At this time, the R conductor electrode 131a, the N conductor electrode 131b, and the G conductor electrode 131c mounted inside the insulator terminal block 131 are electrically connected to each other by an insulator barrier rib (not shown). isolate

In the conductive inner case 132, an insulator terminal block 131 is inserted and coupled, and a part of the N-conductor electrode 131b mounted inside the insulator terminal block is in contact to expand the area of the N-conductor electrode to limit leakage current. .

For example, a cut-out groove 131d for exposing a part of the N-conductor electrode may be formed by partially cutting the side of the insulator terminal block on the side where the N-conductor electrode 131b mounted inside the insulator terminal block 131 is located.

In addition, a portion of the side surface of the conductor inner case 132 on the side where the N conductor electrode 131b mounted inside the insulator terminal block 131 is located may be cut and folded inward to form the bent portion 132a.

Then, when the insulator terminal block 131 is slid and inserted into the conductor inner case 132 to be coupled, a part of the side surface of the conductor inner case is cut in the cut-out groove 131d formed on the side surface of the insulator terminal block and bent inward. The 132a is inserted, and the bent portion comes into contact with a portion of the N-conductor electrode exposed through the cut-out groove, so that the area of the N-conductor electrode is expanded by the area of the inner case of the conductor.

Accordingly, the area of the N conductor electrode 131b becomes very large compared to the area of the R conductor electrode 131a and the area of the G conductor electrode 131c, so that the leakage current becomes very small and the leakage current becomes small. The lower the risk of electric shock.

The reason is that, as described in Korean Patent Registration No. 10-1625493 (2016.05.24), compared to the flat conductor (corresponding to the R conductor electrode of the present invention) connected to the (+) terminal of the power supply (- ), because the larger the area of the flat conductor (corresponding to the N conductor electrode of the present invention) connected to the terminal, the smaller the leakage current.

The insulator outer case 133 is coupled to externally surround the conductor inner case 132 in which the insulator terminal block 131 is inserted. Since the insulator outer case 133 is an insulator, a small amount of leakage current that may leak from the conductive inner case 132 does not flow through the insulator outer case 133 , so even if a human body comes into contact with the insulator outer case 133 , an electric shock occurs. This does not happen.

As described above, the LED lighting system for plant growth having a leakage current limiting function according to the present invention limits the leakage current by using the area ratio difference between the conductors, so that the application of the waterproof structure is unnecessary. It is possible to safely use it without the risk of electric shock due to short circuit even in an environment where there is no need to climb and there is only a lot of moisture.

The various embodiments disclosed in the present specification and drawings are merely presented as specific examples to aid understanding, and are not intended to limit the scope of various embodiments of the present invention.

Accordingly, the scope of various embodiments of the present invention, in addition to the embodiments described herein, all changes or modifications derived based on the technical idea of various embodiments of the present invention are included in the scope of various embodiments of the present invention. should be interpreted as being

The present invention is industrially applicable in the field of LED lighting technology and its application technology.

Claims

a plurality of LEDs (Light Emitting Diodes) are arranged, and an LED lamp (Lamp);

a SMPS (Switched Mode Power Supply) for converting AC power into DC power and supplying the converted DC power to the LED lamp;

a terminal block for supplying AC power applied through an AC power transmission line to the SMPS;

A leakage current limiter installed between the LED lamp and the SMPS to limit the leakage current;

including,

The leakage current limiter is:

a first conductor connected between the (+) output terminal of the SMPS and the (+) electrode of the LED lamp;

a second conductor connected between the (-) output terminal of the SMPS and the (-) electrode of the LED lamp, having an area four times or more of the area of the first conductor to limit the leakage current by using the difference in the conductor area;

LED lighting system for plant growth with a leakage current limiting function that includes.
The method of claim 1,

The leakage current limiter is:

a third conductor branching from the (-) output terminal of the SMPS to serve as a ground, and having an area four times or more of the area of the first conductor;

LED lighting system for plant growth with a leakage current limiting function further comprising.
The method of claim 1,

Connection terminal blocks:

Phase voltage line (R line), neutral line (N line), ground line (G line) on the primary side of the AC power transmission line, and the secondary side phase voltage line (R line), neutral line (N line), and ground line (G line) of the AC power transmission line an insulator terminal block having an R conductor electrode connected to each other at both ends, an N conductor electrode, and a G conductor electrode mounted therein;

a conductor inner case having an insulator terminal block inserted and coupled thereto and partially in contact with an N conductor electrode mounted inside the insulator terminal block to expand an area of the N conductor electrode to limit leakage current;

an insulator outer case coupled to surround the inner case of the conductor into which the insulator terminal block is inserted;

LED lighting system for plant growth with a leakage current limiting function that includes.
4. The method of claim 3,

Connection terminal blocks:

A cut-out groove is formed so that a part of the N-conductor electrode is exposed by partially cutting the side of the insulator terminal block on the side where the N-conductor electrode mounted inside the insulator terminal block is located,

A portion of the side surface of the inner case of the conductor on the side where the N conductor electrode mounted inside the insulator terminal block is located is cut and folded inward to form a bent portion,

When the insulator terminal block is inserted into the inner case of the conductor by sliding and combined, the bent part bent inside by cutting a part of the side of the inner case of the conductor is cut into the cutout formed on the side of the insulator terminal block is inserted, and N conduction exposed through the cutout An LED lighting system for plant growth having a leakage current limiting function in which the bent portion comes into contact with a part of the sieve electrode, and the area of the N conductor electrode is expanded by the area of the case inside the conductor.
The method of claim 1,

The leakage current limiter is:

LED lighting system for plant growth with leakage current limiting function built into the LED lamp.