KR20230021303A - Led lamp for smart farm - Google Patents

Abstract

According to the present invention, an LED lamp for a smart farm comprises: a full-wave rectification circuit (10) receiving alternating current power to perform full-wave rectification; a valley-fill circuit (20) receiving a voltage full-wave rectified by the full-wave rectification circuit (10) to reduce output ripples, and performing power factor correction (PFC) of an input current; a constant current circuit (30) receiving a voltage from the valley-fill circuit (20), and allowing a constant current to flow therein regardless of the level of a voltage across both ends thereof; a plurality of LED modules (50) receiving a voltage from the constant current circuit (30), controlled to be turned on and off by an on/off controller (40), and emitting light to a plant; and a heat exchange part heating cooling water by heat discharged from the constant current circuit (30) to cool the constant current circuit (30). When at least one among the plurality of LED modules (50) is controlled to be turned off, the voltage applied to the constant current circuit (30) increases, and the amount of thermal energy discharged from a transistor of the constant current circuit (30) increases. The temperature of a nutrient solution is adjusted and the temperature around a plant in a smart farm is adjusted by the cooling water. Individual programming such as plants is possible by a wireless communication means such as low-price IR. Individual plant growth is automatically controlled. An AI database can be built by receiving feedback of individual plant growth data.

Description

LED lighting for smart farm {LED LAMP FOR SMART FARM}

The present invention relates to an LED lighting lamp for smart farms, and more particularly, as an AC type power factor correction power supply device, which controls LED constant current, does not generate conduction and radiation noise, and also reduces thermal energy generated in an AC type power supply device, which is a disadvantage of the AC type. By recycling, it is possible to adjust the temperature around the plant and the temperature of the nutrient solution, thereby increasing power energy efficiency. Each LED array with a different light wavelength is composed of individual multi-channel circuits, and each channel is configured with various wireless devices such as low-cost IR communication for home use. Control enables individual programming control of the LED array, enabling plant growth with the plant grower's know-how, and it is possible to automatically control the amount of light for each LED channel with different light wavelengths from a minimum of minutes to a maximum of 365 days, enabling local plant growth even within the plant factory. It enables easy light recipe setting according to the growth status and without replacing the plant light according to the change of each plant type. It is for plant factories where the periodic time period can be finely adjusted. Plant growth beyond the simple dimming control function It is about LED lighting for smart farms that can be used in real life at home.

A smart farm or plant factory is a systematic form of agriculture that can artificially control the growth environment of plants and produce planned production like industrial products.

Domestically and internationally, due to recent severe climate change, the necessity of introducing plant factories for stable food security is greatly increasing. Severe climate change is weakening the productivity of existing open-field cultivation methods by changing temperature, precipitation, and solar radiation. For this reason, the need for a plant factory capable of stably cultivating plants throughout the year is attracting attention. In addition to the purpose of effectively responding to climate change, smart farms also play an important role in the protection of the natural environment. By cultivating plants in a clean environment with an enclosed plant factory, pesticide-free cultivation is possible, and since a plant factory can be installed in a building in the city, various plants can be grown regardless of the location or climate of the region, and productivity per unit area is greatly improved. , can reduce distribution costs and maintain product freshness.

Currently, the agricultural sector is facing a great turning point with the advent of semiconductor light emitting diodes (LEDs). Existing lighting for agriculture covers a wide range of wavelengths and is tailored to human vision, but LEDs can implement only the wavelength range required by plants, so plants can grow deliberately.

The light required by plants can be roughly divided into physiological effect radiation with a wavelength in the range of 300 to 800 nm and photosynthetic effect radiation in the range of 400 to 700 nm. Plants absorb blue and red light and reflect green light. In this way, various technologies are being developed for using LEDs capable of emitting light in a wavelength range required by plants as lighting for plant growth.

In the case of smart farms, the purpose is to maintain the optimal environment by properly adjusting the temperature, light, humidity, and nutrients in which plants can grow. In particular, it has the advantage of shortening the harvest period by growing without receiving any external environment by controlling the wavelength at which plants can grow by using general fluorescent lights and LED lights as artificial light sources. In addition, even in poor areas where the four seasons are not clear or plants cannot grow in deserts or the Antarctic environment, desired plants can be grown in smart farms with LED lighting, and pests and diseases can be prevented from occurring with a closed plant factory, especially using pesticides. By not doing so, it is possible to grow eco-friendly agricultural products and special products, flower pots, and forage crops.

When growing crops in smart farms, it is often not possible to directly utilize sunlight, so it is very important to secure light by using artificial lighting for crop growth. Basically, plants are photosynthetic organisms, so they grow through photosynthetic activity using light. Photosynthesis means ‘synthesis using light’, and plants, which are photosynthetic organisms, use light as energy to synthesize organic substances.

Plants receive energy through light and grow through photosynthesis and respiration. Vegetative growth and reproductive growth are affected by the length of day and photosynthetic photon flux (PPF), and the wavelength and amount of light must be changed according to the growth state. Plants perform photosynthesis in the 450 nm and 650 nm light wavelength bands in the 380-760 nm region including the visible ray region, and the radiant energy in the wavelength range in which photosynthesis occurs is called photosynthetically active radiation (PAR). Each plant has a different wavelength and photosynthetic photon flux (PPF). Therefore, it is very important for greenhouses or plant factories to secure the light wavelength and amount of light required for crop growth in a similar environment of sunlight, and in this case, artificial lighting control, such as a seasoning recipe for food, is required.

The conventional domestic and foreign light recipe method is a method of performing on/off control at a predetermined time ratio programmed in a centralized control device by hardware-fixed mixing of white LEDs, blue LEDs, and red LEDs at a predetermined ratio. This light recipe method has a feature that only simple plants having the same photosynthetic characteristics must be grown as a group. That is, there is a problem in that it is impossible to locally control the light recipe according to the growth state of other plants.

In addition, in order to grow crops with different required light recipes, there is a problem in that the existing LED plant lamps must be completely replaced, and thus plant factory operators inevitably have to bear installation costs. In addition, since it is a centralized control method, engineers who designed the device must program the light recipe, making it difficult for field experienced people to implement a practical light recipe in the plant factory. In addition, plant factory installation costs are inevitably expensive.

In addition, since the conventional LED driving circuit controls switching by PWM frequency, conduction noise and air radiation noise of the power line inevitably occur. It has no choice but to grow, which inevitably causes electromagnetic wave problems. In other words, it becomes difficult to build a nature-friendly environment.

In addition, in the case of implementing multi-channelization of an LED array by applying a conventional simple driving circuit with a large number of lights, the centralized circuit is complicated, and the programming expert applies the light recipe for each growth state required by the plant equally to the multi-channel LEDs. Since it is necessary to divide and control, in the conventional technology, variable control between channels is impossible in multi-channel LED lighting, and there is a problem in that the driving control of the light recipe is unsatisfactory because it relies on software programming without various plant state information.

Republic of Korea Patent Publication No. 10-1270383 (2013.06.26.) Republic of Korea Patent Publication No. 10-1368289 (2014.03.04.)

It relates to the LED lighting for smart farms of the present invention, which is an AC type power factor correction power supply device, which controls LED constant current, does not generate conduction and radiation noise, and also recycles thermal energy generated from an AC type power supply device, which is a disadvantage of the AC type. By adjusting the ambient temperature and the temperature of the nutrient solution, power energy efficiency is increased, and each LED array with different light wavelength is composed of individual multi-channel circuits, and each channel is individually programmed to control the LED array with various wireless controls such as low-cost IR communication for home use. enables plant growers to grow plants with the know-how of plant growers, and it is possible to automatically control the amount of light for each LED channel with different light wavelengths from a minimum of minutes to a maximum of 365 days, setting light recipes according to local plant growth conditions even within the plant factory It enables easy light recipe setting without replacing the plant light according to the change by plant type, and it is for a plant factory where the periodic time period can be finely adjusted. it's about

LED lighting for smart farms of the present invention includes a full-wave rectification circuit 10 for full-wave rectification by receiving AC power; a valley fill circuit 20 that receives the full-wave rectified voltage from the full-wave rectification circuit 10, reduces output ripple, and compensates for power factor correction (PFC) of an input current; a constant current circuit (30) receiving a voltage from the valley fill circuit (20) and flowing a constant current regardless of the magnitude of the voltage across both ends; a plurality of LED modules 50 that receive voltage from the constant current circuit 30, are controlled on/off by the on/off controller 40, and irradiate light to plants; and a heat exchange unit that cools the constant current circuit 30 by heating cooling water with the heat emitted from the constant current circuit 30 .

When at least one of the plurality of LED modules 50 is off-controlled, the voltage applied to the transistor of the constant current circuit 30 increases, and the amount of transistor thermal energy emitted from the constant current circuit 30 increases that can be characterized.

It may be characterized in that the cooling water adjusts the temperature around the plant in the smart farm and the temperature of the nutrient solution.

LED lighting for smart farms of the present invention includes an MCU (70) for sending a control signal to the on/off controller (40); a linear regulator circuit 80 that receives voltage from the valley fill circuit 20, drops the voltage, and applies DC power to the MCU 70; and a communication interface module 90 for controlling communication between the MCU 70 and an external communication device.

The MCU 70 and the communication interface module 90 individually grow and program the plurality of LED modules 50 through a low-cost IR sensor (wireless communication) to automatically control the plurality of LED modules 50 Alternatively, it may be characterized in that the external communication device can build an AI database by transmitting individual growth data of plants in the smart farm to the external communication device.

The heat exchange unit includes a first heat dissipation plate 61 having a cooling water passage 61c formed therein and having a plurality of heat dissipation fins 61d; A first cover 62 connected to the first heat sink 61 in a sliding manner may be further included.

The hooking pieces 62a and 62b protruding from both sides of the first cover 62 are inserted into the hooking protrusions 61a and 61b formed on the first heat dissipation plate 61 so that the first cover 62 is attached to the first heat dissipation plate 61 . It can be tightly coupled to the heat sink 61 by sliding.

A constant module installation space 63 may be formed inside the first heat sink 61 and the first cover 62 .

The module 31 including the constant current circuit 30 is installed inside the module installation space 63, and the module 31 is installed close to the cooling water passage 61c to discharge from the constant current circuit 30. The heat generated may heat the cooling water flowing through the cooling water passage 61c.

A plate-shaped power control module 110 may be installed in the module installation space 63 .

Both ends of the power control module 110 may be slidably coupled to the slide grooves 61e and 61f formed in the first heat sink 61 in the module installation space 63 .

It may be characterized in that the full-wave rectification circuit 10 and the valley-fill circuit 20 are located in the power control module 110.

A plate-shaped signal control module 120 may be installed in the module installation space 63 .

One of both ends of the signal control module 120 is slidably coupled to the slide groove 62c formed inside the first cover 62, and the other slide groove 61g formed on the first heat sink 61 It can be slide coupled to.

It may be characterized in that the MCU 70, the linear regulator circuit 80, and the communication interface module 90 are located in the signal control module 120.

A second heat sink 64 coupled to the first heat sink 61, having a plurality of heat sink fins 64d, and having a second coolant passage 64c formed therein may be further included.

It may be characterized in that the first heat sink 61 is installed to be in contact with the heat sink 64d formed on the second heat sink 64, and the plurality of LED modules 50 are coupled to the opposite side of the heat sink 64d. .

As described above, it relates to the LED lighting for smart farms of the present invention, and there is no power supply noise while controlling constant current, and in multi-channel LED array lighting, wireless individual light intensity programming control is possible for each channel, and up to 365 It is possible to control the amount of light for each LED channel in one cycle, and efficiently use the thermal energy of the power supply device emitted during LED constant current control.

In addition, while simplifying the structure of the drive circuit, miniaturization of the LED power supply product is promoted, and the manufacturing process of the product is simple to improve productivity, as well as to increase price competitiveness by reducing manufacturing cost.

1A and 1B are diagrams showing waveforms generated during conventional PWM switching control.
Figure 2 is a view showing the structure of the smart farm LED lighting of the present invention.
Figure 3 is a circuit diagram of a smart farm LED lighting lamp of the present invention.
Figures 4a and 4b are diagrams showing waveforms generated from the LED lighting lamp for smart farms of the present invention.
Figure 5 is a cross-sectional view of the first heat sink of the smart farm LED lighting lamp of the present invention.
Figure 6 is a cross-sectional view showing the final state of the first heat sink and the second heat sink of the smart farm LED lighting lamp of the present invention.
Figure 7 is a perspective view showing the appearance of the LED lighting for smart farms of the present invention.

It should be noted that in the following description, only parts necessary for understanding the operation according to the embodiment of the present invention are described, and descriptions of other parts will be omitted so as not to distract from the subject matter of the present invention.

In addition, the terms or words used in this specification and claims described below should not be construed as being limited to the usual or dictionary meaning, and the inventors use the concept of terms to describe their invention in the best way. Based on the principle that it can be properly defined, it should be interpreted as meaning and concept consistent with the technical spirit of the present invention. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only one preferred embodiment of the present invention, and do not represent all of the technical spirit of the present invention, so that various alternatives can be used at the time of this application. It should be understood that there may be equivalents and variations.

In the following use of the term, plural expressions should be understood as not excluding plural expressions unless explicitly stated otherwise.

The present invention relates to an LED lighting lamp for smart farms, which is an AC type power factor correction power supply device that controls LED constant current, does not generate conduction and radiation noise, and recycles thermal energy generated from an AC type power supply device, which is a disadvantage of the AC type. By enabling ambient temperature control and nutrient solution temperature control, power energy efficiency is increased, and individual multi-channel circuits are configured for each LED array with different light wavelengths, and each channel is LED with various wireless controls such as low-cost IR communication for home use. Array individual programming control is possible, enabling plant growth with plant grower's know-how, and it is possible to automatically control the amount of light for each LED channel with different light wavelengths from a minimum of minutes to a cycle of up to 365 days. It enables easy light recipe setting without replacing plants according to light recipe setting according to plant type and change by plant type. It is for plant factories where periodic time period can be finely adjusted. It is about LED lighting for smart farms that can be used as

Figure 2 is a view showing the structure of the smart farm LED lighting of the present invention. Figure 3 is a circuit diagram of a smart farm LED lighting lamp of the present invention. Figures 4a and 4b are diagrams showing waveforms generated from the LED lighting lamp for smart farms of the present invention.

Referring to Figure 2, the smart farm LED lighting lamp of the present invention full-wave rectification circuit 10, valley fill circuit 20, constant current circuit 30, on / off controller 40, LED module 50, heat exchanger (not shown), an MCU 70, a linear regulator circuit 80, and a communication interface module 90.

The full-wave rectification circuit 10 is a circuit that receives AC power and performs full-wave rectification, and is a circuit configured to flow in one direction by passing both + and -waves by the rectification action of a diode. The full-wave rectifier circuit 10 may be configured as a bridge rectifier circuit using four diodes.

The full-wave rectification circuit 10 applies AC and outputs it as a pulsating current (a pulsating current in which an AC component is included in DC).

If the full-wave rectified power supply is simply used as it is, the LED flickers due to the valley of the pulsating current. If this ripple current is used as an LED power supply, severe flickering occurs. This flicker easily fatigues the user's eyes. At worst, it can cause problems such as dizziness or seizures in sensitive people.

In order to reduce flicker, the existing LED lighting was controlled by PWM (Pulse Width Modulation) method. When switching by PWM, signal noise is generated, and this switching noise becomes a source of conduction noise in a power supply or signal line or a source of radio radiation noise (parts A to C in FIG. 1A).

In FIG. 1B, the dotted line waveform is a waveform of a normal AC power supply, and is a waveform generated when the synthesized waveform is controlled by a switching power supply by PWM control. Noise in the form of PWM control power supply harmonics occurs.

That is, noise is generated during PWM power control, and this noise becomes a source of conduction noise in power and signal lines or a source of radio radiation noise.

Such noise acts as a factor that reduces efficiency in smart farms. It becomes a source of various signal noises, interferes with the activities of bees, and interferes with fertilization by bees.

Therefore, in the smart farm, the efficiency of the smart farm can be increased by rejecting the PWM method for switching control.

On the other hand, it is possible to build a power supply device without noise influence on the surrounding environment and devices without PWM switching control, which can be said to be a power supply device suitable for the characteristics of a smart farm or plant factory.

That is, the LED lighting lamp for smart farms of the present invention is a system in which noise does not occur in the power line.

The valley fill circuit 20 receives the full-wave rectified voltage from the full-wave rectifier circuit 10, reduces the output ripple, and corrects the power factor of the input current (PFC, Power Factor Correction).

The valley-fill circuit 20 is a circuit that can prevent a power supply voltage from being lowered while maintaining a high power factor, and a passive valley-fill circuit is widely used.

4B shows output voltage characteristics of the valley fill circuit 20.

In the case of a passive valley-fill circuit, valley-fill only up to half of the highest voltage, and flicker may occur when applied to a linear type light emitting diode circuit. Since plants do not react greatly to flicker, even if the plant is irradiated with light that causes flicker, the growth of the plant does not deteriorate. That is, in the case of LED lighting for plant growth, it is not necessary to use PWM control for flicker prevention.

The valley fill circuit 20 may include a PFC compensation circuit for compensating the power factor of the input current (PFC, Power Factor Correction). PFC means improving the power factor to bring it closer to 1. This reduces the phase difference between voltage and current by bringing the power factor angle (phase angle) closer to 0°, thereby bringing the apparent power closer to the active power. At the same time, harmonic currents are suppressed.

The valley fill circuit 20 is an AC type power factor correction power supply device that controls LED constant current and does not generate conduction or radiation noise.

The constant current circuit 30 receives a voltage from the valley fill circuit 20, and a constant current flows regardless of the magnitude of the voltage applied to both ends.

Even if the voltage across the constant current circuit 30 changes, the amount of change in the current flowing through it is zero. Therefore, even if a signal voltage is applied to both ends of the constant current circuit 30 in operation, the signal current does not flow through the constant current circuit 30. That is, the impedance is infinite (∞). The constant current circuit 30 passes direct current and blocks signals.

The LED module 50 receives voltage from the constant current circuit 30 and irradiates light to plants. The LED module 50 is controlled on/off by the on/off controller 40. A plurality of LED modules 50 may be installed, and by controlling some LED modules 50 of the plurality of LED modules 50 to be ON and controlling the remaining LED modules 50 to be OFF, the amount of light irradiated to the plants is reduced. can be adjusted

That is, by controlling the number of LEDs that are turned on/off, the amount of light irradiated to the plant can be adjusted, which is a simple and economical method compared to the method of controlling the amount of light of each LED.

In existing smart farms or plant factories, it is common to control the power of LED groups collectively, controlling most LEDs to be on during the daytime and to be off at night.

According to the LED lighting lamp for smart farms of the present invention, the amount of light irradiated to plants can be controlled by adjusting the number of LEDs turned on/off in the plurality of LED modules 50.

The LED module 50 arranges LED optical elements so as to emit a light source having a wavelength of 430 to 690 nm.

In general, the effect of the wavelength of the light source on plants is that blue light (430 ~ 440 nm) can exert the maximum effect of photosynthetic action and chlorophyll action, while pests are flexible, and red-yellow light (580 ~ 650 nm) is not beneficial to photosynthesis. On the other hand, it has insect control effect, and in red light (650 ~ 670nm), it promotes the maximum effect of chlorophyll action and germination and leaf distribution flower formation in red light of 650 ~ 660nm, and the maximum effect of photosynthetic action is exerted in red light of 670nm do.

The LED module 50 selectively controls blue light (430-440nm), red-yellow light (580-650nm), and red light (650-670nm), so that photosynthesis, chlorophyll, and pests necessary for plant growth in the greenhouse The control action is very good, and it is possible to greatly enhance the plant growth efficiency.

The LED module 50 may include a white LED in which phosphors of the red light LED and the blue light LED are combined together with the red light LED and the blue light LED.

That is, red light and blue light are driven from the LED module 50 in the greenhouse to control lighting for plant growth, but when a worker enters the greenhouse, white light is driven in combination within the range of 10 to 100%, so that the worker's It can be controlled to create human-friendly lighting for smooth operation.

When at least one of the plurality of LED modules 50 is controlled to be off, the voltage applied to the transistor of the constant current circuit 30 increases. The current flowing in the transistor of the constant current circuit 30 is constant, but since the voltage increases, the power supplied to the constant current circuit increases. In this case, the increased power is released in the form of heat energy from the transistor included in the constant current circuit 30 . It is necessary to cool the heat released to stabilize the circuit. In order to efficiently utilize the emitted thermal energy, the heating cost of the smart farm can be reduced by heating the cooling water with the heat emitted from the transistor and circulating the heated cooling water inside the smart farm.

That is, a heat exchange unit may be installed to cool the constant current circuit 30 by heating the cooling water with the heat emitted from the constant current circuit 30 . The heat exchange unit controls hot water by recycling lost heat, thereby enabling efficient energy management and eliminating heat waste. That is, it is possible to increase power energy efficiency by recycling thermal energy to adjust the temperature around the plant and the temperature of the nutrient solution.

MCU (70, microcontroller unit) is a device equipped with a processor, memory, and input/output devices inside a single chip. In general, MCUs are used in a wide range of fields from automobiles to toys in various forms.

The MCU 70 transmits a control signal to the on/off controller 40 so that the on/off controller 40 can control the on/off of the LED module 50.

The linear regulator circuit 80 receives voltage from the valley fill circuit 20, drops the voltage, and applies DC power to the MCU 70. It is appropriate that the DC power applied to the MCU 70 is 5V.

The communication interface module 90 controls communication between the MCU 70 and an external communication device.

The communication interface module 90 transmits previously learned information from an external communication device to the MCU 70 through wireless communication and records it in a non-volatile memory in the MCU 70 to automatically control plant cultivation. In addition, the communication interface module 90 may separately transmit control information reflecting sensor or visual observation results from an external communication device to the MCU 70 through wireless communication.

Meanwhile, control data generated by the MCU 70 may be transmitted to an external communication device, and data backup and management may be performed by the external communication device. Data generated by the MCU 70 and secured from an external communication device is growth data for various plants, and based on these growth data, optimal LED control data can be obtained.

A plurality of LED lights for smart farms of the present invention may be installed in smart farms or plant factories. Each LED light for smart farm can obtain data by minute to year based on the data. Based on these data, it is possible to automatically control the wavelength according to each plant, each growth state, and each environmental condition. That is, based on the database, an optimal amount of light for each time period may be irradiated, and light with an optimum wavelength for each time period may be irradiated.

The LED lighting for smart farms of the present invention is composed of individual multi-channel circuits for each LED array with different light wavelengths, and each channel enables individual programming control of the LED array with various wireless controls such as low-cost IR communication for home use, thereby increasing the know-how of plant growers. can enable plant growth.

In addition, it is possible to automatically control the amount of light for each LED channel with different light wavelengths from a minimum of minutes to a maximum of 365 days, making it easy to set the light recipe according to the local plant growth condition and without replacing the plant light according to the change by plant type even in the plant factory and can be used for plant growth in real life beyond the simple dimming control function as it is for plant factories that can finely adjust the periodic time period.

The MCU 70 and the communication interface module 90 perform growth programming individually on a plurality of LED modules 50 through a low-cost IR sensor (wireless communication) to automatically control a plurality of LED modules 50 individually or in a smart farm. By sending individual growth data of plants to an external communication device, the external communication device can build an AI database.

That is, the LED lighting lamp for smart farms of the present invention is a device capable of building plant cultivation environment data. In addition, it can operate and control independently, making it a suitable device for AI control.

On the other hand, the LED lights for smart farms of the present invention can be installed in a plurality of smart farms or plant factories, and by adjusting the number of LED lights for smart farms of the present invention, the amount of light required for smart farms or plant factories can be easily adjusted. . That is, any capacity smart farm or plant factory can provide an appropriate amount of light. In addition, it is possible to maximize the cultivation management efficiency of crops by adjusting the amount of light suitable for each crop.

Hereinafter, the heat exchange part of the smart farm LED lighting lamp of the present invention will be described in detail.

Figure 5 is a cross-sectional view of the first heat sink of the smart farm LED lighting lamp of the present invention. Figure 6 is a cross-sectional view showing the final state of the first heat sink and the second heat sink of the smart farm LED lighting lamp of the present invention. Figure 7 is a perspective view showing the appearance of the LED lighting for smart farms of the present invention.

The heat exchange unit includes a first heat sink 61 and a first cover 62 .

The first heat dissipation plate 61 has a shape extending in the longitudinal direction.

The first heat dissipation plate 61 has a cooling water passage 61c formed therein and includes a plurality of heat dissipation fins 61d.

The first cover 62 has a shape extending in the longitudinal direction corresponding to the first heat dissipation plate 61 . The first cover 62 is connected to the first heat sink 61 in a sliding manner. The hooking pieces 62a and 62b protruding on both sides of the first cover 62 are inserted into the hooking protrusions 61a and 61b formed on the first heat sink 61 so that the first cover 62 is connected to the first heat sink 61. are tightly coupled to the slide.

A predetermined module installation space 63 is formed inside the first heat sink 61 and the first cover 62 .

A module 31 including a constant current circuit 30 is installed in the module installation space 63 . The module 31 is installed close to the cooling water passage 61c, and the heat emitted from the module 31 including the constant current circuit 30 heats the cooling water flowing through the cooling water passage 61c.

A plate-shaped power control module 110 is installed in the module installation space 63 .

Both ends of the power control module 110 are slidably coupled to the slide grooves 61e and 61f formed in the first heat sink 61 in the module installation space 63 .

The full-wave rectification circuit 10 and the valley-fill circuit 20 shown in FIG. 2 are located in the power control module 110.

The plate-shaped signal control module 120 is installed in the module installation space 63.

One of both ends of the signal control module 120 is slide-coupled to the slide groove 62c formed inside the first cover 62, and the other slides to the slide groove 61g formed on the first heat sink 61. are combined

In the signal control module 120, the MCU 70 shown in FIG. 2, the linear regulator circuit 80, and the communication interface module 90 are located.

Figure 6 Referring to, the LED lamp for smart farm of the present invention is coupled to the first heat sink 61 and further includes a second heat sink 64 having a plurality of heat sink fins 64d and having a second coolant passage 64c formed therein. do.

The first heat sink 61 is installed in contact with the heat sink 64d formed on the second heat sink 64, and a plurality of LED modules 50 are coupled to the opposite side of the heat sink 64d.

As described above, it relates to the LED lighting for smart farms of the present invention, and there is no power supply noise while controlling constant current, and in multi-channel LED array lighting, wireless individual light intensity programming control is possible for each channel, and up to 365 It is possible to control the amount of light for each LED channel in one cycle, and efficiently use the thermal energy of the power supply device emitted during LED constant current control.

In addition, while simplifying the structure of the drive circuit, miniaturization of the LED power supply product is promoted, and the manufacturing process of the product is simple to improve productivity, as well as to increase price competitiveness by reducing manufacturing cost.

On the other hand, the embodiments of the present invention disclosed in the present specification and drawings are only presented as specific examples to aid understanding, and are not intended to limit the scope of the present invention. In addition to the embodiments disclosed herein, it is obvious to those skilled in the art that other modifications based on the technical idea of the present invention can be implemented.

10 full-wave rectifier circuit 20 valley fill circuit
30 constant current circuit 40 on/off controller
50 LED module 61 First heat sink
61a, 61b holding jaw 61c cooling water passage
61d Radiating fin 61e, 61f slide groove
61g slide groove 62 first cover
62a, 62b hooking piece 62c slide groove
63 Module installation space 64 Second heat sink
64c Second coolant passage 64d Radiating fin
70 MCU 80 Linear Regulator Circuit
90 Communication interface module 110 Power control module
120 signal control module

Claims (6)

Full-wave rectification circuit 10 for full-wave rectification by receiving AC power;
a valley fill circuit 20 that receives the full-wave rectified voltage from the full-wave rectification circuit 10, reduces output ripple, and compensates for power factor correction (PFC) of an input current;
a constant current circuit (30) receiving a voltage from the valley fill circuit (20) and flowing a constant current regardless of the magnitude of the voltage across both ends;
a plurality of LED modules 50 receiving voltage from the constant current circuit 30, being on/off controlled by the on/off controller 40, and radiating light to plants; and
A heat exchange unit for cooling the constant current circuit 30 by heating cooling water with the heat emitted from the constant current circuit 30;
When at least one of the plurality of LED modules 50 is controlled to be turned off, the voltage applied to the transistor of the constant current circuit 30 increases, and the amount of thermal energy emitted from the constant current circuit 30 increases to coolant LED lighting for smart farms, characterized in that by increasing the temperature, adjusting the temperature around the plants in the smart farm and adjusting the temperature of the nutrient solution in the smart farm with the cooling water. According to claim 1,
MCU 70 for sending a control signal to the on/off controller 40;
a linear regulator circuit 80 that receives voltage from the valley fill circuit 20, drops the voltage, and applies DC power to the MCU 70; and
Further comprising a communication interface module 90 for controlling communication between the MCU 70 and an external communication device,
The MCU 70 and the communication interface module 90 individually grow and program the plurality of LED modules 50 through a low-cost IR sensor (wireless communication) to automatically control the plurality of LED modules 50 Or LED lighting for smart farms that transmits individual growth data of plants in the smart farm to the external communication device so that the external communication device can build an AI database. According to claim 1,
The heat exchange part
a first heat dissipation plate 61 having a cooling water passage 61c formed therein and having a plurality of heat dissipation fins 61d;
Further comprising a first cover 62 connected to the first heat sink 61 in a sliding manner,
The hooking pieces 62a and 62b protruding from both sides of the first cover 62 are inserted into the hooking protrusions 61a and 61b formed on the first heat dissipation plate 61 so that the first cover 62 is attached to the first heat dissipation plate 61 . It is closely coupled to the heat sink 61 by sliding,
A constant module installation space 63 is formed inside the first heat sink 61 and the first cover 62,
The module 31 including the constant current circuit 30 is installed inside the module installation space 63, and the module 31 is installed close to the cooling water passage 61c to discharge from the constant current circuit 30. LED lighting for smart farms, characterized in that the heat to heat the cooling water flowing through the cooling water passage (61c). According to claim 3,
A plate-shaped power control module 110 is installed in the module installation space 63,
Both ends of the power control module 110 are slide-coupled to the slide grooves 61e and 61f formed in the first heat sink 61 in the module installation space 63,
LED lighting for smart farms, characterized in that the full-wave rectification circuit 10 and the valley fill circuit 20 are located in the power control module 110. According to claim 4,
A plate-shaped signal control module 120 is installed in the module installation space 63,
One of both ends of the signal control module 120 is slidably coupled to the slide groove 62c formed inside the first cover 62, and the other slide groove 61g formed on the first heat sink 61 is combined with a slide on
LED lighting for smart farms, characterized in that the MCU (70), the linear regulator circuit (80) and the communication interface module (90) are located in the signal control module (120). According to claim 5,
A second heat sink 64 coupled to the first heat sink 61, having a plurality of heat sink fins 64d, and having a second coolant passage 64c formed therein,
For smart farm, characterized in that the first heat sink 61 is installed in contact with the heat sink 64d formed on the second heat sink 64 and the plurality of LED modules 50 are coupled to the opposite side of the heat sink 64d LED lights.

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