KR102180081B1 - Led lighting device using plasma ionizer and photocatalyst and lighting system including the same - Google Patents

Abstract

The present invention provides a lighting apparatus comprising: a base frame (110) opened downwards based on a state fixed to the ceiling; a light source unit (120) mounted on the base frame (110) and arranged in plural to emit light downward from the ceiling side; a cooling frame (130) covering the lower side of the light source unit (120), and formed of a light transmitting material to transmit visible light emitted from the light source unit (120); a photocatalyst coating layer (140) having a visible light-responsive photocatalyst of a preset temperature range applied thereto; a photocatalyst supply module (150) including a photocatalyst storage unit (152), receiving a liquid photocatalyst from the photocatalyst storage unit (152), and forming the photocatalyst coating layer (140) through an application means (154); and a control module (160) controlling the operation of the light source unit (120), the cooling frame (130), and the photocatalyst supply module (150). The present invention exhibits an effect of expecting a semi-permanent air purification function through the lighting apparatus.

Description

LED lighting equipment using plasma ionizer and photocatalyst, and lighting system including the same {LED LIGHTING DEVICE USING PLASMA IONIZER AND PHOTOCATALYST AND LIGHTING SYSTEM INCLUDING THE SAME}

The present invention is an LED lighting device using a plasma ionizer and a photocatalyst, and a lighting system including the same, while performing air purification of a target space through the plasma ionizer, and by contacting it with the photocatalyst using light emitted from the light source unit. , It relates to a technology for performing air purification with a plasma ionizer.

Today, we are living in an environment where our health is threatened by the appearance of viruses of unknown cause, fine dust including organic compounds emitted from many automobiles and factories. According to the US Environmental Protection Agency (EPA), a study found that indoor air pollution is usually 2 to 5 times higher than outdoors.

Indoor air is a state in which bacteria, mold and house dust, as well as ultrafine dust introduced from the outdoors, and volatile organic compounds used in the interior are mixed.

According to the technology used until recently, in a fluorescent lamp or the like in lighting, since ultraviolet rays are emitted from a light source, it is possible to obtain an air purification effect by applying a photocatalytic coating. Korean Patent Laid-Open Publication No. 10-2015-0014822 is disclosed as a representative prior art. The prior art is a "air purification apparatus having an ultraviolet light emitting diode and a filter", which purifies air using ultraviolet light emission of a specific wavelength and a photocatalyst.

However, in the LED lamps for lighting currently used in many homes, ultraviolet rays do not emit light and only visible rays exist, so even if titanium oxide (TiO2), a photocatalyst that reacts to ultraviolet rays, is used as a catalyst material, it will have a great effect on air purification Can't. If the user wants to obtain a greater air purification effect, there is a hassle of attaching a separate ultraviolet light emitting unit to the LED lamp for lighting.

In addition, although the photocatalyst applied to the lighting equipment is not used semi-permanently, but may be exhausted by a chemical reaction due to friction or friction with flowing air, most of the current lighting is permanently used. However, there is a need to periodically recoat it.

(Patent Document 1) Korean Laid-Open Patent No. 10-2015-0014822

The present invention is to propose a lighting device capable of continuously resupplying or re-applying a liquid photocatalyst, which can be widely used in a general home or office space by applying a visible light-responsive photocatalyst instead of ultraviolet rays.

In addition, in order to maximize the air purification efficiency of the target space, it is intended to propose a lighting device equipped with an ionizer.

The present invention for solving the above problems, based on the state fixed to the ceiling, the base frame 110 that is open toward the lower side; A light source unit 120 mounted on the base frame 110 and arranged to emit light downward from the ceiling side, comprising: a light source unit 120 arranged in M rows and N columns on the same plane; A cooling frame 130 in which a cooling passage 132 through which a refrigerant is circulated is formed, which covers the lower side of the light source unit 120 and is formed of a translucent material to transmit visible light emitted from the light source unit 120, Cooling frame 130; A photocatalytic coating layer 140 applied to a part of the lower surface of the cooling frame 130 and coated with a visible light-responsive photocatalyst in a preset temperature range; A photocatalyst supply module 150 including a photocatalyst storage unit 152, receiving a liquid photocatalyst from the photocatalyst storage unit 152 and forming the photocatalyst coating layer 140 through an application unit 154; And a control module 160 for controlling the operation of the light source unit 120, the cooling frame 130, and the photocatalyst supply module 150. Including, the cooling frame 130 is provided on the lower side of the light source unit 120, the column direction, and includes a protrusion 134 formed only on the lower side of the N _2K-1 row, and the protrusion 134 ) A cooling passage 132 is provided inside (wherein K is a natural number of 1 or more), and when the refrigerant is circulated through the cooling passage 132, the visible light emitted from the light source unit 120 is It provides a lighting device that is blocked from reaching the photocatalytic coating layer 140.

In addition, a cover frame 170 coupled to the base frame 110 so as to cover the entire lower portion of the base frame 110; And a plasma ionizer 180 mounted outside the cover frame 170. It further includes, and the operation of the plasma ionizer 180 may be controlled by the control module 160.

In addition, the light source unit 120 includes: a first group light source unit 122 arranged in N _2K-1 columns based on the column direction; And a second group light source units 124 arranged in N _2K columns. And the first and second group light source units 122 and 124 may operate independently of each other.

In addition, in the cooling frame 130, the photocatalyst coating layer 140 is formed by the photocatalyst supply module 150 on the protrusion 134 formed downwardly under the first group light source unit 122, The photocatalyst is depressed upward based on the protrusion 134 on the lower side of the second group light source unit 124, and the photocatalyst is not applied, and on the lower surface of the cooling frame 130, the photocatalyst coating layer is based on the column direction. 140 may be formed by alternating.

In addition, the photocatalyst supply module 150 is provided with the coating means 154 at a height corresponding to the position where the photocatalyst coating layer 140 is formed, and the coating means 154 is a first guide extending in the column direction Rail 155; And a second guide rail 156 extending in the row direction. It is connected to and may be formed to be movable in both the column direction and the row direction.

In addition, the control module 160 may repeatedly form the photocatalytic coating layer 140 through the application means 154 depending on the cumulative operation time of the first group light source unit 122 or the number of on-off times. have.

In addition, the refrigerant circulating through the cooling passage 132 may have a specific opaque color.

On the other hand, the present invention is a lighting system using the above-described lighting equipment, occupancy sensor 211 for checking the number of occupants in a target space; A CO2 sensor 212 sensing the concentration of carbon dioxide in the target space and outside; A fine dust sensor 213 for sensing the concentration of fine dust in the target space and outside; A first temperature sensor 214 for sensing a temperature inside the lighting device; A second temperature sensor 215 for sensing the temperature of the target space; And a ventilation device 216 for exchanging air in the target space with outside air. Further comprising, the control module 160, through the occupancy sensor 211, CO2 sensor 212, fine dust sensor 213, a first temperature sensor 214, a second temperature sensor 215 A lighting system for controlling the operation of the ventilation device 216, the light source unit 120, the cooling frame 130, and the photocatalyst supply module 150 is provided using the obtained information.

The present invention as described above has the following effects.

In the present invention, by forming the cooling frame in a specific structure, it is possible to control whether the emitted light and the photocatalyst are in contact with each other depending on whether or not the refrigerant is circulated, thereby reducing heat generation of the lighting device and improving the air quality of the target space. It has an effect that can be considered. In addition, the present invention is formed in a structure capable of continuously resupplying the photocatalyst, thereby exerting the effect of expecting a semi-permanent air purification function through a lighting device if a user or an administrator simply fills the photocatalyst in the photocatalyst storage unit. .

In addition, since the present invention includes a plasma ionizer, it is possible to purify the air in a target space even in a late-night time when the light source unit does not emit light, thereby providing comfortable air to occupants.

1 is an overall perspective view of a lighting device according to the present invention.
FIG. 2 is a cross-sectional view of A-A' of FIG. 1, illustrating a state in which a light source unit in row N _2K-1 emits light while a refrigerant flows through the cooling passage.
FIG. 3 is a cross-sectional view of A-A' of FIG. 1, illustrating a state in which a light source unit of N _2K rows emit light while a refrigerant flows through a cooling passage.
FIG. 4 is a cross-sectional view of A-A' of FIG. 1, illustrating a state in which a refrigerant flows through a cooling passage and light source units of all rows emit light.
FIG. 5 is a cross-sectional view of A-A' of FIG. 1, illustrating a state in which a light source unit in row N _2K-1 emits light in a state in which the refrigerant does not flow in the cooling passage.
FIG. 6 is a cross-sectional view of A-A' of FIG. 1, illustrating a state in which a light source unit of N _2K row emits light in a state in which the refrigerant does not flow in the cooling passage.
7 is a cross-sectional view of A-A' of FIG. 1, illustrating a state in which light source units of all rows emit light when a refrigerant does not flow in the cooling passage.
8 is a plan view of the lighting apparatus according to the present invention, showing the initial position of the application means.
9 shows a process of re-applying the photocatalytic coating layer on the lower surface of the cooling frame while the application means moves along the first guide rail in the state of FIG. 8.
10 shows a process in which the application means moves in the row direction along the second guide rail.

Hereinafter, a lighting device according to the present invention will be described with reference to the drawings. Here,'column direction' means a horizontal direction based on a plane, and'row direction' means a vertical direction based on a plane. Hereinafter, a direction and a position will be described based on a state in which the lighting device according to the present invention is fixed to the ceiling.

Lighting equipment

The lighting device 100 according to an embodiment of the present invention includes a base frame 110, a light source unit 120, a cooling frame 130, a photocatalytic coating layer 140, a photocatalyst supply module 150, and a control module 160. And a cover frame 170.

The base frame 110 is a part fixed to the ceiling, and has a structure surrounded by sidewalls formed in all directions based on a plane, and has a structure that is open downward when fixed to the ceiling. The base frame 110 is formed of a rigid material, and a plurality of parts are provided inside the sidewalls formed in all directions, and are configured to protect them from damage from physical impact and interference. On the base frame 110, a light source unit receiving portion (not shown) in a concave shape may be formed so that the light source unit 120 may be mounted, and the light source unit 120 may be mounted and fixed in the light source unit receiving portion. have. The light source unit accommodating portions may be arranged in M rows and N columns, and the number and spacing thereof may be changed according to the designer's selection.

The light source unit 120 is preferably a Light-Emitting Diode (LED) device, and is disposed to emit light downward. The light source units 120 are arranged in M rows and N columns, and these include a first group light source units 122 arranged in N _2K-1 columns and a second group light source units 124 arranged in N _2K columns. It is distinguished. In this case, the first group light source unit 122 and the second group light source unit 124 are operated independently from each other by the control module 160. Outputs of the first group light source unit 122 and the second group light source unit 124 may be formed differently. Preferably, the output size of the first group light source unit 122 may be formed to be a relatively larger value than the output size of the second group light source unit 124. The light source unit 120 is located on a flat inner surface of the base frame 110 and is disposed on the same plane.

The cooling frame 130 has a cooling passage 132 through which the refrigerant circulates, and is configured to closely cover the lower side of the light source unit 120. 2 to 7, the cooling frame 130 is configured to be fitted in close contact with the inner surface of the base frame 110. Of course, it may be fixed to the inner surface of the base frame 110 through a separate fixing means. In this way, the cooling frame 130 is configured to cover all the lower portions of the light source unit 120 by being fitted in close contact with the inside of the base frame 110. Based on the cross section A-A' of FIG. 1, the cooling frame 130 is formed with protrusions 134 protruding downward by a predetermined length alternately with respect to the column direction. In other words, the indentation-protrusion 134-indentation-protrusion 134 is a structure in which the structure is repeated. Here, the photocatalyst is not coated on the indentation, and the photocatalyst coating layer 140 is formed only on the protrusion 134. Due to this structure of the cooling frame 130, the light source unit 120 is divided into a first group and a second group, and the height or position of the application means 154 is determined. The cooling passage 132 is not provided in the above-described indentation, and the cooling passage 132 is provided only in the protrusion 134. The cooling passage 132 extends in a row direction, and has a structure in which the front end or rear end side of the row direction communicates with the cooling passage 132 of the adjacent protrusion 134. Accordingly, the refrigerant stored in the refrigerant supply unit 131 may circulate in zigzag over the entire cooling frame 130. In this process, a circulation pump 133 forcibly circulating the refrigerant may be further provided.

The photocatalytic coating layer 140 is formed on the lower surface of the protrusion 134 of the cooling frame 130. Here, the photocatalyst coating layer 140 is coated with a visible light-responsive photocatalyst in a preset temperature range. Since the cooling frame 130 is configured to cover the light source unit 120, heat generated from the light source unit 120 may stay in the space between the base frame 110 and the cooling frame 130. At this time, the temperature inside the lighting device may vary depending on whether the refrigerant is circulated in the cooling frame 130 and whether the first or second group light source units 122 and 124 are individually operated, and the photocatalyst used is lighting. It can be determined by taking into account the temperature inside the device. In the photocatalytic coating layer of the present invention, a natural mineral metal lithium and thermal composite oxide may be used as a photocatalyst.

The photocatalyst supply module 150 includes a photocatalyst storage unit 152, an application means 154, a first guide rail 155 and a second guide rail 156. The photocatalyst storage unit 152 is configured to store the above-described photocatalyst in a liquid form and periodically re-apply the photocatalyst on the protrusion 134 of the cooling frame 130. The photocatalyst is in contact with the light emitted from the first group light source unit 122 and may be consumed or worn over time, or may be separated from the photocatalyst coating layer 140, and the amount of photocatalyst coated on the photocatalyst coating layer 140 When this decreases, air purification efficiency may decrease. Accordingly, by continuously replenishing the photocatalyst, the air purification efficiency can be kept constant. The application means 154 is in the form of a roller, but the photocatalyst coating layer 140 can be formed by rotating in the process of rubbing with the protrusion 134 while containing the liquid photocatalyst supplied from the photocatalyst storage unit 152 on the outer circumferential surface. . The application means 154 is connected to both the first guide rail 155 and the second guide rail 156 extending in the column direction, and thus is formed to be movable in both the column direction and the row direction. Referring to FIG. 8 for explanation of this, the first guide rail 155 is provided between a pair of guide rail fixing portions 157 provided at both ends. The pair of guide rail fixing portions 157 are positioned on the second guide rail 156, and the first guide rail 155 itself is configured to move along the second guide rail 156 in a row direction.

The control module 160 controls the above-described light source unit 120 and the refrigerant circulation in the cooling frame 130 and the operation of the photocatalyst supply module 150, which will be described later.

The cover frame 170 is intimately coupled with the base frame 110 to cover the entire base frame 110. It consists of a side wall formed in all directions in a vertical direction and a cover plate 172 fixed to the stepped side of the side wall. The transparency and color of the cover plate 172 may be changed according to the designer's selection.

The plasma ionizer 180 is mounted on one of the outside of the cover frame 170. The principle of purifying the air using the plasma ionizer 180 follows the Hades Mechanism. When a plasma discharge system is formed by discharge from the electrode, water molecules on the electrode surface are divided into'active hydrogen ions' and'oxygen ions', and these two ions react in the air to form OH radicals and OOH radicals, resulting in pollutants in the air. Removes (for example, viruses, bacteria, fungi, etc.). The plasma ionizer 180 applied to the lighting apparatus 100 according to the present invention includes two ion generating units, and the operation of the ion generating unit is controlled by the control module 160. For example, the plasma ionizer 180 may be configured to continue to operate even at bedtime when the light source unit 120 does not operate (can be set by the user) to continuously perform the air purification function of the target space.

Air purification control using lighting equipment

Hereinafter, a process of controlling air purification using the lighting device according to the present invention will be described with reference to FIGS. 2 to 7.

2 to 4 show a state in which the refrigerant circulates through the cooling passage 132, and FIGS. 5 to 7 show a state in which the refrigerant does not circulate through the cooling passage 132. The cooling frame 130 is made of a translucent material to transmit visible light as a whole, and is configured to completely or partially block the transmission of visible light in a state in which the refrigerant circulates therein. Here, the blocking rate may vary depending on the type of refrigerant, and the selection of the type of refrigerant may vary according to the intention of the designer.

As described above, the light source unit 120 is divided into a first group light source units 122 arranged in N _2K-1 columns and a second group light source units 124 arranged in N _2K columns. Here, when both the first group 122 and the second group 124 emit light, the output is greatest.

Whether the refrigerant circulates in the cooling passage 132 and whether the first group 122 and the second group 124 emit light is controlled by the control module 160. The control module 160 is configured to transmit and receive information by being wirelessly connected to the air quality sensor of the target space, and when the air quality of the target space is bad, the refrigerant does not circulate through the cooling passage 132 to purify the air of the target space. . Conversely, when the air quality of the target space is good, the refrigerant is circulated through the cooling passage 132 to prevent the photocatalyst from being reduced by optical contact. By circulating the refrigerant in the cooling passage 132, it is possible to reduce the amount of heat generated by the lighting device according to the present invention, and by reducing the load caused by the lighting, it is possible to reduce energy used for cooling, especially in summer.

2 to 4 is a state in which the refrigerant circulates in the cooling passage 132, and is applied when the indoor air quality in the target space is good, and in the case of FIGS. 5 to 7, the refrigerant does not circulate in the cooling passage 132. This is applied when the indoor air quality of the target space is poor.

In FIGS. 5 to 7, in a mode in which both the first group light source unit 122 and the second group light source unit 124 operate, the air purification intensity is the highest, and in the mode in which only the first group light source unit 122 is operated. The air purification intensity of is medium, and the air purification intensity in the mode in which only the second group light source unit 124 operates is the lowest.

In FIGS. 2 to 4, it is a structure that blocks contact between light emission from the light source unit 120 and the photocatalytic coating layer 140, if possible, and may be controlled according to the intensity of the output of the lighting device selected by the user. In other words, Figs. 2 to 4 and Figs. 5 to 7 are configured with different mutual control priorities, and Figs. 2 to 4 show the output strength of the lighting device desired by the user, and Figs. 5 to 7 show the air purification strength.

Hereinafter, a lighting system according to the present invention will be described with further reference to FIGS. 8 to 10. The lighting system according to the present invention is a configuration in which Internet of Things (IOT) technology is grafted. In the target space, a control module 160 of the lighting device 100 and a control unit 210 are separately provided so as to wirelessly transmit and receive specific information. In order to provide convenience to occupants using the Internet of Things, the control module 160 and the control unit 210 may be configured to be connected to a wireless Internet network, and an illumination sensor (not shown) in addition to sensors to be described later. The operation of the lighting device 100 may be controlled using.

In an embodiment in which the lighting system is implemented using the Internet of Things, it emits light with a bright illumination (brightness) of white light (5700k) in the morning, and daylight (2700k) in the evening, but the brightness is relatively darker than in the morning. The algorithm of the Internet of Things may be configured so that only the plasma ionizer 180 is operated during bedtime when the lighting is not required.

The control unit 210 includes an occupancy sensor 211, a CO2 sensor 212, a fine dust sensor 213, a first temperature sensor 214, a second temperature sensor 215, and a ventilation device 216. Here, the ventilation device 216 means a ventilation device 216 controller.

The number of occupants is checked through the occupancy sensor 211, and when the number of occupants exceeds a preset value, the control module 160 automatically controls the refrigerant circulation in the light source unit 120 and the cooling passage 132 . The CO2 sensor 212 also senses the CO2 concentration in the target space in real time, and components of the lighting device are controlled through the control module 160. At this time, the control unit 210 includes a ventilation device 216, in consideration of the external state sensed through the CO2 sensor 212 and the fine dust sensor 213, the lighting device 100 according to the present invention. Instead of operating, the ventilation device 216 can be controlled to improve the air quality of the target space.

Meanwhile, the first temperature sensor 214 and the second temperature sensor 215 sense the temperature inside and outside the lighting device. If the temperature difference sensed through the sensors 214 and 215 is large, the current lighting device This means that excessive heat is generated inside, and the operation of the light source unit 120 may be blocked through the control module 160. Accordingly, internal components such as a PCB (not shown) and an electric wire inside the lighting device 100 can be protected from excessive heat.

8 to 10, the present invention is a configuration in which the photocatalyst is continuously recoated according to a preset condition through the photocatalyst supply module 150. The preset condition is determined by the control module 160, and the photocatalytic coating layer 140 is repeatedly formed through the application means 154 depending on the cumulative operation time or the number of on-off times of the first group light source unit 122. It is desirable. By first moving the coating means 154 in the column direction, the photocatalytic coating layer 140 is re-coated on the protrusion 134. The indentation that does not protrude is not in contact with the application means 154, and the photocatalyst is not coated. The photocatalyst re-application of the first row light source unit 120 may be configured to reciprocate multiple times in a column direction according to a designer's selection. When the re-application of the photocatalytic coating 140 corresponding to the first row light source unit 120 is completed, the photocatalytic coating layer 140 corresponding to the second row light source unit 120 is re-applied. To this end, when the first guide rail 155 itself is moved in the row direction along the second guide rail 156, and re-application of the photocatalytic coating layer 140 corresponding to the Kth row light source unit 120 is completed, The photocatalytic coating layer 140 corresponding to the K+1th row light source unit 120 is re-coated.

In this specification, descriptions of the ballast and the power supply unit used in the lighting equipment are omitted, but this does not mean that the lighting equipment according to the present invention excludes the ballast and the power supply unit.

In the above, the present specification has been described with reference to the embodiments shown in the drawings so that those skilled in the art can easily understand and reproduce the present invention, but this is only exemplary, and those skilled in the art can use various modifications and equivalents from the embodiments of the present invention. It will be appreciated that embodiments are possible. Therefore, the scope of protection of the present invention should be determined by the claims.

110: base frame
120: light source unit
130: cooling frame
140: photocatalytic coating layer
150: photocatalyst supply module
160: control module
170: cover frame
180: plasma ionizer

Claims (8)

Based on the state fixed to the ceiling, the base frame 110 opened toward the lower side;
A light source unit 120 mounted on the base frame 110 and arranged to emit light downward from the ceiling side, comprising: a light source unit 120 arranged in M rows and N columns on the same plane;
A cooling frame 130 in which a cooling passage 132 through which a refrigerant is circulated is formed, which covers the lower side of the light source unit 120 and is formed of a translucent material to transmit visible light emitted from the light source unit 120, Cooling frame 130;
A photocatalytic coating layer 140 applied to a part of the lower surface of the cooling frame 130 and coated with a visible light-responsive photocatalyst in a preset temperature range;
A photocatalyst supply module 150 including a photocatalyst storage unit 152, receiving a liquid photocatalyst from the photocatalyst storage unit 152 and forming the photocatalyst coating layer 140 through an application unit 154; And
A control module 160 for controlling the operation of the light source unit 120, the cooling frame 130, and the photocatalyst supply module 150; Including,
The cooling frame 130,
It is provided below the light source unit 120, and includes a protrusion 134 formed only on the lower side of the N _2K-1 column based on the column direction, and a cooling passage 132 is provided inside the protrusion 134 ( However, K is a natural number greater than 1),
When the refrigerant is circulated through the cooling passage 132,
By the coolant, the visible light emitted from the light source unit 120 is blocked from reaching the photocatalytic coating layer 140,
Lighting equipment.
The method of claim 1,
A cover frame 170 coupled to the base frame 110 so as to cover the entire lower side of the base frame 110; And
A plasma ionizer 180 mounted outside the cover frame 170; It further includes,
The operation of the plasma ionizer 180 is controlled by the control module 160,
Lighting equipment.
The method of claim 1,
The light source unit 120, based on the column direction,
A first group light source units 122 arranged in N _2K-1 rows; And
A second group light source units 124 arranged in N _2K rows; It is divided into
The first and second group light source units 122 and 124 operate independently of each other,
Lighting equipment.
The method of claim 3,
The cooling frame 130,
The photocatalytic coating layer 140 is formed by the photocatalyst supply module 150 on the protrusion 134 formed downwardly under the first group light source unit 122,
The photocatalyst is not applied to the lower side of the second group light source unit 124 by being indented upward based on the protrusion 134,
On the lower surface of the cooling frame 130, the photocatalytic coating layers 140 are alternately formed based on the column direction,
Lighting equipment.
The method of claim 4,
The photocatalyst supply module 150 is provided with the coating means 154 at a height corresponding to the position where the photocatalyst coating layer 140 is formed,
The application means 154,
A first guide rail 155 extending in the column direction; And a second guide rail 156 extending in the row direction. It is connected to and formed to be movable in both the column direction and the row direction,
Lighting equipment.
The method of claim 4,
The control module 160,
Depending on the cumulative operation time or the number of on-off times of the first group light source unit 122, the photocatalytic coating layer 140 is repeatedly formed through the application means 154,
Lighting equipment.
The method of claim 1,
The refrigerant circulating through the cooling passage 132 has a specific opaque color,
Lighting equipment.
As a lighting system using the lighting device according to any one of claims 1 to 7,
Occupancy sensor 211 for checking the number of occupants in the target space;
A CO2 sensor 212 sensing the concentration of carbon dioxide in the target space and outside;
A fine dust sensor 213 for sensing the concentration of fine dust in the target space and outside;
A first temperature sensor 214 for sensing a temperature inside the lighting device;
A second temperature sensor 215 for sensing the temperature of the target space; And
A ventilation device 216 for exchanging air in the target space with outside air; It further includes,
The control module 160,
The ventilation device 216 using information obtained through the occupancy sensor 211, the CO2 sensor 212, the fine dust sensor 213, the first temperature sensor 214, and the second temperature sensor 215, Controlling the operation of the light source unit 120, the cooling frame 130 and the photocatalyst supply module 150,
Lighting system.

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