JP2024050039A - Air Treatment Equipment - Google Patents

Abstract

An air treatment device is provided in which the power supply of a lighting module is also used to supply power to a fan and an ultraviolet light source of the air treatment module.
According to an embodiment, an air treatment device includes a fixture body, a lighting module, and the air treatment module. The lighting module includes a visible light source operated by power supplied through a main circuit and is attached to the fixture body. The air treatment module includes an ultraviolet light source, a fan, and a conversion circuit and is attached to the fixture body while being electrically connected in series to the lighting module in the main circuit. The ultraviolet light source and the fan are operated by power supplied through the main circuit, and the conversion circuit transforms the power supplied through the main circuit to a target voltage within the operating voltage range of the fan and supplies it to the fan.
[Selected figure] Figure 3

Description

An embodiment of the present invention relates to an air treatment device.

Air treatment modules that sterilize air using ultraviolet light are known. In such air treatment devices, a fan is operated to introduce air from the outside into the treatment space, and an air flow is generated that exhausts the introduced air to the outside of the treatment space. The treatment device then uses ultraviolet light in the treatment space to sterilize the introduced air, and the sterilized air is exhausted to the outside of the treatment space.

There is also a demand for an air treatment module such as that described above to be attached to a fixture body that is installed on a wall surface such as a ceiling surface, together with a lighting module that irradiates a room or the like with visible light, and for the air treatment module and lighting module to be used together. In addition, in an air treatment device in which an air treatment module and a lighting module are used together, there is a demand for the power supply unit that supplies power to the lighting module to also be used to supply power to the ultraviolet light source and fan of the air treatment module. In other words, there is a demand for the power supply of the lighting module to be shared as the power supply for the ultraviolet light source and fan of the air module.

Patent No. 6998077

The problem that this invention aims to solve is to provide an air treatment device in which the power supply of the lighting module is shared to supply power to the fan and ultraviolet light source of the air treatment module.

According to an embodiment, the air treatment device includes a fixture body, a lighting module, and an air treatment module. The fixture body is installed on a wall surface. The lighting module includes a visible light source operated by power supplied through a main circuit, and is attached to the fixture body. The air treatment module includes an ultraviolet light source, a fan, and a conversion circuit, and is attached to the fixture body while being electrically connected in series to the lighting module in the main circuit. The ultraviolet light source and the fan are operated by power supplied through the main circuit, and the conversion circuit transforms the power supplied through the main circuit to a target voltage within the operating voltage range of the fan and supplies it to the fan.

The present invention provides an air treatment device in which the power supply of the lighting module is shared to supply power to the fan and ultraviolet light source of the air treatment module.

FIG. 1 is a perspective view showing an air treatment device according to a first embodiment. FIG. 2 is a perspective view showing the configuration of an air treatment module in the air treatment device according to the first embodiment. FIG. 3 is a block diagram that illustrates an example of an electrical system and a control system in the air treatment device according to the first embodiment. FIG. 4 is a block diagram that shows an example of an electrical system and a control system in an air treatment device according to a modified example.

The air treatment device (1) of the embodiment includes a fixture body (10), a lighting module (12), and an air treatment module (11). The fixture body (10) is installed on a wall surface. The lighting module (12) includes a visible light source (31) operated by power supplied through a main circuit (30) and is attached to the fixture body (10). The air treatment module (11) includes an ultraviolet light source (22), a fan (21), and a conversion circuit (36), and is attached to the fixture body (10) in a state where it is electrically connected in series to the lighting module (12) in the main circuit (30). The ultraviolet light source (22) and the fan (21) are operated by power supplied through the main circuit (30), and the conversion circuit (36) transforms the power supplied through the main circuit (30) to a target voltage (Vtar) within the operating voltage range of the fan (21) and supplies it to the fan (21). With this configuration, the power supply unit (25), which is the power supply for the lighting module (12), is appropriately shared to supply power to the fan (21) and ultraviolet light source (22) of the air treatment module (11).

In the embodiment of the air treatment device (1), the air treatment module (11) further includes an adjustment circuit (35). When power is supplied to the lighting module (12) and the air treatment module (11) through the main circuit (30), the adjustment circuit (35) distributes the power input to the air treatment module (11) to the ultraviolet light source (22) and the fan (21), and keeps the difference between the voltage (Vb) across the lighting module (12) and the voltage (Va) across the air treatment module (11) within a specified range. With this configuration, the air treatment module (11) on which the fan (21) and the ultraviolet light source (22) are mounted is appropriately applied to an electrical system that receives power from the power supply unit (25), which is the power source for the lighting module (12).

The air treatment device (1) of the embodiment further includes a power supply unit (25) that outputs power to the main circuit (30). The air treatment module (11) further includes a detection circuit (32) that detects the current output from the power supply unit (25) to the main circuit (30). Based on the detection result of the detection circuit (32), the power supply unit (25) controls the output of power to the main circuit (30) so that a current is output to the main circuit (30) at a target current (Itar) within the operating current range of the visible light source (31). With this configuration, even if the lighting module (12) is not provided with a current detection function, a constant current output at the target current (Itar) from the power supply unit (25) to the main circuit (30) is appropriately performed.

First, a first embodiment will be described as an example of an embodiment. FIG. 1 shows an air treatment device 1 according to the first embodiment. As shown in FIG. 1, the air treatment device 1 includes a fixture body 10, an air treatment module 11, and a lighting module 12. In the example shown in FIG. 1, one air treatment module 11 and two lighting modules 12 are attached to the fixture body 10, and the air treatment module 11 and the lighting module 12 are used together in the air treatment device 1. Note that the number of air treatment modules 11 and the lighting modules 12 attached to the fixture body 10 is not particularly limited. It is sufficient that one or more air treatment modules 11 and one or more lighting modules 12 are attached to the fixture body 10.

The fixture body 10 is installed on a wall surface such as a ceiling surface or a side wall surface. Each of the lighting modules 12 includes a visible light source (not shown in FIG. 1), which includes either a visible light LED or a lamp that emits visible light as a light-emitting element. In each of the lighting modules 12, the visible light source is activated by the supply of power (DC power), and visible light is emitted from the visible light source. Each of the lighting modules 12 irradiates visible light from the visible light source into an environmental space defined by the wall surface on which the fixture body 10 is installed, for example, irradiating a room, etc.

Figure 2 shows the configuration of the air treatment module 11. As shown in Figure 2, the air treatment module 11 includes a treatment box 13, and a treatment space 15 is formed inside the treatment box 13. In Figure 2, the treatment box 13 is shown without its top wall. In one example shown in Figures 1 and 2, a reflector 16 is combined with the treatment box 13 in the air treatment module 11. In the air treatment device 1, the reflector 16 reflects visible light emitted from each of the lighting modules 12. This prevents visible light from each of the lighting modules 12 from entering the treatment space 15.

In the example air treatment module 11 shown in Figs. 1 and 2, two communication openings 17, 18 are formed in the combination of the treatment box 13 with the reflector 16. In the air treatment module 11, the treatment space 15 communicates with the outside of the air treatment module 11 through each of the communication openings 17, 18. The treatment space 15 communicates with, for example, an environmental space defined by the wall surface on which the device body 10 is installed through each of the communication openings 17, 18.

In the air treatment module 11, a fan 21, an ultraviolet light source 22, and a photocatalytic filter 23 are arranged in the treatment space 15 inside the treatment box 13. In the example shown in Figures 1 and 2, the fan 21 is arranged facing the communication port 17 from the inside of the treatment space 15, and the photocatalytic filter 23 is arranged facing the communication port 18 from the inside of the treatment space 15. In addition, each of the fan 21 and the ultraviolet light source 22 is operated by the supply of electric power (DC power).

By operating the fan 21, an air flow is generated that introduces air from the outside of the aforementioned environmental space into the processing space 15 and exhausts the introduced air to the outside of the processing space 15. In one example, by operating the fan 21, an air flow is generated in the processing space 15 from the communication port 17 toward the communication port 18. In this case, the communication port 17 serves as an inlet for introducing air into the processing space 15, and the communication port 18 serves as an outlet for exhausting air from the processing space 15 to the outside. In another example, by operating the fan 21, an air flow is generated in the processing space 15 from the communication port 18 toward the communication port 17. In this case, the communication port 18 serves as an inlet for introducing air into the processing space 15, and the communication port 17 serves as an outlet for exhausting air from the processing space 15 to the outside.

The ultraviolet light source 22 includes either an ultraviolet LED or a lamp that emits ultraviolet light as a light-emitting element. The ultraviolet light source 22 is operated by supplying power (DC power) to emit ultraviolet light. As a result, ultraviolet light from the ultraviolet light source 22 is irradiated in the processing space 15. Here, at least the inner surface of the processing box 13 is formed from a material that reflects ultraviolet light, for example, from either an aluminum alloy or a stainless steel alloy. This effectively prevents ultraviolet light from the ultraviolet light source 22 from being emitted outside the processing space 15.

In the photocatalytic filter 23, a photocatalyst is supported on the surface of a base material. In the photocatalytic filter 23, a plurality (innumerable) of through holes are formed in the base material, and the base material is made of ceramics such as aluminum oxide and aluminum nitride. The photocatalyst supported on the base material is made of metal oxides such as titanium oxide and tungsten oxide.

In the example shown in Figures 1 and 2, the ultraviolet light source 22 irradiates the treatment space 15 with at least ultraviolet light having a peak wavelength in the range of 320 nm or more and 400 nm or less, i.e., UV-A. Then, in the treatment space 15, the ultraviolet light emitted from the ultraviolet light source 22 is incident on the photocatalytic filter 23 directly and/or after reflection. When UV-A is incident on the photocatalytic filter 23 in the treatment space 15, active oxygen and OH radicals are generated in the photocatalytic filter 23. Then, the generated active oxygen and OH radicals decompose viruses, fungi (bacteria), odorous substances, etc. contained in the air in the treatment space 15. As a result, sterilization and deodorization of the air are performed in the treatment space 15.

In the example shown in FIG. 2, the ultraviolet light source 22 irradiates the treatment space 15 with ultraviolet light having a peak wavelength in the range of 200 nm or more and 320 nm or less, i.e., UV-C, in addition to the aforementioned UV-A. In the treatment space 15, the activity of viruses and bacteria contained in the air is suppressed by irradiating the air with UV-C from the ultraviolet light source 22. This sterilizes the air in the treatment space 15.

In one example, only one of UV-A and UV-C may be irradiated from the ultraviolet light source 22. When only UV-C is irradiated from the ultraviolet light source 22, that is, when UV-A is not irradiated from the ultraviolet light source 22, the photocatalytic filter 23 is not placed in the treatment space 15. In addition, "sterilization" means inactivating viruses and bacteria (bacteria) present in the air, and terms such as "disinfection", "sterilization" and "sterilization" can be used instead of "sterilization". For this reason, although the term "sterilization" is used in the embodiment, the term "sterilization" can be replaced with "sterilization", "sterilization" and "sterilization".

When the air treatment module 11 is used, the fan 21 and the ultraviolet light source 22 are operated. As a result, in the treatment space 15, the air introduced from the outside through the inlet (the corresponding one of 17 and 18) is subjected to at least one of the above-mentioned sterilization using UV-C from the ultraviolet light source 22 and the above-mentioned sterilization and deodorization using UV-A from the ultraviolet light source 22 and the photocatalytic filter 23. The sterilized and/or deodorized air is then discharged to the outside of the environmental space, etc. through the outlet (the corresponding one of 17 and 18).

Figure 3 shows an example of the electrical system and control system in the air treatment device 1. As shown in Figure 3, the air treatment device 1 is equipped with a power supply unit 25. The power supply unit 25 is a power supply that supplies power to the lighting module 12, and is also used as a power supply for the fan 21 and the ultraviolet light source 22 of the air treatment module 11. The power supply unit 25 is installed in the fixture body 10, or is located near the fixture body 10 on the back side of the wall on which the fixture body 10 is installed.

As shown in FIG. 3, the power supply unit 25 includes a rectifier circuit 26, an output circuit 27, and a control unit (control circuit) 28. The control unit 28 is composed of a processor or integrated circuit, and a storage medium such as a memory. The processor or integrated circuit constituting the control unit 28 includes any of a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), a microcomputer, an FPGA (Field Programmable Gate Array), and a DSP (Digital Signal processor). The control unit 28 may include only one integrated circuit or the like, or may include multiple integrated circuits or the like. The control unit 28 may also include only one storage medium or may include multiple storage media.

In the power supply unit 25, AC power is supplied to the rectifier circuit 26 from an external power supply (not shown) such as a commercial power supply. The rectifier circuit 26 includes, for example, an AC/DC converter, and converts the AC power from the external power supply into DC power. The converted DC power is then supplied from the rectifier circuit 26 to the control unit 28, which operates the control unit 28. The rectifier circuit 26 also outputs the converted DC power to the output circuit 27. The output circuit 27 includes a transformer circuit, which transforms the voltage of the DC power. The output circuit 27 then supplies the DC power, the voltage of which has been transformed by the transformer circuit, to the air treatment module 11 and the lighting module 12.

In the air treatment device 1 in which the air treatment module 11 and the lighting module 12 are attached to the fixture body 10, the output circuit 27 of the power supply unit 25 is electrically connected to the main circuit 30, which is formed through the air treatment module 11 and the lighting module 12. In the main circuit 30, the air treatment module 11 is electrically connected in series to each of the lighting modules 12. In the main circuit 30, each visible light source 31 of the lighting module 12 is electrically connected to the fan 21 and the ultraviolet light source 22 of the air treatment module 11. In the main circuit 30, each visible light source 31 of the lighting module 12 is electrically connected in series to the air treatment module 11.

The output circuit 27 of the power supply unit 25 outputs the DC power transformed as described above to the main circuit 30, thereby supplying power to each visible light source 31 of the lighting module 12, and the fan 21 and ultraviolet light source 22 of the air treatment module 11. The control unit 28 also controls the drive of the output circuit 27 to control the output of power (DC power) from the output circuit 27 to the main circuit 30. For example, by controlling the drive of the output circuit 27, the control unit 28 switches between a state in which power is output from the output circuit 27 to the main circuit 30 and a state in which the output of power from the output circuit 27 to the main circuit 30 is stopped.

In addition, in the power supply unit 25, the control unit 28 controls the output of power from the output circuit 27 to the main circuit 30 so that a current is output to the main circuit 30 at the target current Itar within the operating current range of the visible light source 31. That is, the power to the main circuit 30 is output from the power supply unit 25 as a constant current output that maintains the output current from the power supply unit 25 to the main circuit 30 at the target current Itar. As a result, in each of the lighting modules 12, the current flowing through the visible light source 31 is maintained at the target current Itar included in the operating current range, and the current consumption in each of the lighting modules 12 is the same or approximately the same as the target current Itar.

In the example shown in FIG. 3, a detection circuit 32 is provided in one of the two lighting modules 12. The detection circuit 32 is disposed in the main circuit 30, and detects the current consumed by the mounted lighting module 12. Therefore, the detection circuit 32 detects the current output from the output circuit 27 of the power supply unit 25 to the main circuit 30. The detection circuit 32 outputs a detection signal indicating the detection result of the current to the control unit 28 of the power supply unit 25.

In one example, the detection circuit 32 includes a shunt resistor disposed in the main circuit 30, and outputs a voltage signal indicating the voltage value applied to the shunt resistor as a detection signal to the control unit 28. The control unit 28 then calculates the output current from the output circuit 27 to the main circuit 30 based on the voltage value of the voltage signal. The control unit 28 controls the drive of the output circuit 27 based on the current detection result in the detection circuit 32, and controls the output of power to the main circuit 30. At this time, the output is controlled so that a current is output to the main circuit 30 at a target current Itar within the operating current range of the visible light source 31.

In the main circuit 30, the air treatment module 11 is electrically connected in series to the lighting module 12 as described above. Therefore, a constant current output is performed at the target current Itar, and a current of the same or approximately the same magnitude as the target current Itar is input to the air treatment module 11. In addition to the fan 21 and the ultraviolet light source 22, the air treatment module 11 is equipped with an adjustment circuit 35 and a conversion circuit 36. The adjustment circuit 35 distributes the power (DC power) supplied to the air treatment module 11 through the main circuit 30 to the fan 21 and the ultraviolet light source 22. Therefore, the current input to the air treatment module 11 is distributed by the adjustment circuit 35 to the fan 21 and the ultraviolet light source 22.

The adjustment circuit 35 adjusts the power distributed to the ultraviolet light source 22 so that a current is input to the ultraviolet light source 22 at the reference current Iref of the operating current range of the ultraviolet light source 22. That is, the power from the adjustment circuit 35 to the ultraviolet light source 22 is distributed from the adjustment circuit 35 as a constant current input that maintains the input current to the ultraviolet light source 22 at the reference current Iref. As a result, in the air treatment module 11, the current flowing through the ultraviolet light source 22 is maintained at the reference current Iref included in the operating current range. The operating current range of the ultraviolet light source 22 is approximately the same size as the operating current range of the visible light source 31.

The conversion circuit 36 transforms the power distributed from the adjustment circuit 35 to the fan 21 and supplies it to the fan 21. The conversion circuit 36 transforms the power supplied to the fan 21 so that a voltage of the target voltage Vtar in the operating voltage range of the fan 21 is applied to the fan 21. That is, the power from the conversion circuit 36 to the fan 21 is supplied to the fan 21 as a constant voltage input that maintains the input voltage to the fan 21 at the target voltage Vtar. As a result, in the air treatment module 11, the voltage applied to the fan 21 is maintained at the target voltage Vtar included in the operating voltage range. As described above, the conversion circuit 36 transforms the power supplied through the main circuit 30 to the target voltage Vtar in the operating voltage range of the fan 21 and supplies it to the fan 21.

In addition, the adjustment circuit 35 adjusts the air treatment module 11 to consume a current equal to or approximately equal to the target current Itar when a constant current is output to the main circuit 30 at the target current Itar. The adjustment in the adjustment circuit 35 makes the electrical characteristics of the air treatment module 11 similar to the electrical characteristics of each of the lighting modules 12 when a constant current is output to the main circuit 30 at the target current Itar. That is, the adjustment in the adjustment circuit 35 makes the difference between the voltages Vb of each of the lighting modules 12 and the voltages Va of the air treatment module 11 fall within a specified range when a constant current is output to the main circuit 30 at the target current Itar. Here, examples of the state in which the difference between the voltages Va of the air treatment module 11 and the voltages Vb of the lighting modules 12 falls within the specified range include a state in which the voltages Va of the air treatment module 11 fall within a range of 95% or more and 105% or less of the voltages Vb of the lighting modules 12.

As described above, in this embodiment, the power supplied through the main circuit 30 operates each of the visible light sources 31 of the lighting module 12, and the fan 21 and ultraviolet light source 22 of the air treatment module 11, and in the main circuit 30, the air treatment module 11 is electrically connected in series to the lighting module 12. In the air treatment module 11, the conversion circuit 36 transforms the power supplied through the main circuit 30 to a target voltage Vtar within the operating voltage range of the fan 21 and supplies it to the fan 21.

Because of this circuit configuration, even if the power supply unit 25 that outputs power to the main circuit 30 with a constant current output to operate the visible light source 31 is used as the power supply, the power transformed to the target voltage Vtar by the conversion circuit 36 is input to the fan 21, so the fan 21 operated by the constant voltage input is operated appropriately. In addition, because power is output to the main circuit 30 with a constant current output, the ultraviolet light source 22 operated by the constant current input is also operated appropriately. The power supply unit 25, which is the power supply for the lighting module 12, is appropriately shared to supply power to the fan 21 and ultraviolet light source 22 of the air treatment module 11. By sharing the power supply for the fan 21 and ultraviolet light source 22 with the power supply for the lighting module 12, the air treatment device 1 can realize both the air treatment function such as sterilization and the lighting function with a simple configuration.

In addition, in this embodiment, when power is supplied to the lighting module 12 and the air treatment module 11 through the main circuit 30, the adjustment circuit 35 of the air treatment module 11 distributes the power input to the air treatment module 11 to the ultraviolet light source 22 and the fan 21, and keeps the difference between the voltage Va across the air treatment module 11 and the voltage Vb across each of the lighting module 12 within a specified range. This results in a state in which the air treatment module 11 consumes a current that is the same or approximately the same as the target current Itar output to the main circuit 30 by the constant current output from the power supply unit 25. Therefore, the air treatment module 11, on which the fan 21 and the ultraviolet light source 22 are mounted, is appropriately applied to an electrical system to which power is supplied from the power supply unit 25, which is the power source for the lighting module 12.

In addition, in this embodiment, the detection circuit 32 of the lighting module 12 detects the current output from the power supply unit 25 to the main circuit 30. Then, based on the detection result of the detection circuit 32, the power supply unit 25 controls the output of power to the main circuit 30 so that a current is output to the main circuit 30 at the target current Itar. Therefore, a constant current output at the target current Itar is performed appropriately.

In a modified example shown in FIG. 4, the detection circuit 32 is provided in the air treatment module 20. In this modified example, the detection circuit 32 is also placed in the main circuit 30, and detects the current output from the output circuit 27 of the power supply unit 25 to the main circuit 30. In this modified example, the detection circuit 32 detects the current consumed by the mounted air treatment module 11, thereby detecting the output current to the main circuit 30. In this modified example, the control unit 28 controls the output to the main circuit 30 based on the current detection result of the detection circuit 32 so that a current is output to the main circuit 30 at the target current Itar within the operating current range of the visible light source 31.

This modified example also provides the same actions and effects as the above-described embodiment. In addition, in this modified example, since the detection circuit 32 is provided in the air treatment module 11, constant current output at the target current Itar is appropriately performed even if the lighting module 12 is not provided with a current detection function.

In one modified example, the lighting module 12 is not provided, and one or more air treatment modules 11 are arranged in the main circuit 30. When multiple air treatment modules 11 are provided in the main circuit 30, the multiple air treatment modules 11 are electrically connected in series in the main circuit 30. In this modified example, power is output from the power supply unit 25 to the main circuit 30 at a constant current output at the target current Itar. Each air treatment module 11 includes a fan 21 and an ultraviolet light source 22, as well as an adjustment circuit 35 and a conversion circuit 36, and the above-mentioned processing is performed in the adjustment circuit 35 and the conversion circuit 36.

In this modified example, even if power is output to the main circuit 30 at a constant current output at the target current Itar, the fan 21 and ultraviolet light source 22 are appropriately operated by the adjustment circuit 35 and conversion circuit 36 in each of one or more air treatment modules 11. Therefore, for example, even if the air treatment module 11 is attached to the fixture body 10 instead of the lighting module 12, the power supply unit 25 used as the power source for the lighting module 12 can be used as is to supply power to the fan 21 and ultraviolet light source 22 of the air treatment module 11.

In addition, in this modified example, a detection circuit 32 is provided in one or more of the air treatment modules 11 arranged in the main circuit 30. This allows for appropriate constant current output at the target current Itar.

According to at least one of these embodiments, the visible light source of the lighting module and the fan and ultraviolet light source of the air treatment module are operated by power supplied through the main circuit, and in the main circuit, the air treatment module is electrically connected in series with the lighting module. In the air treatment module, the conversion circuit transforms the power supplied through the main circuit to a target voltage within the operating voltage range of the fan and supplies it to the fan. This makes it possible to provide an air treatment device in which the power supply of the lighting module is shared to supply power to the fan and ultraviolet light source of the air treatment module.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

1...Air treatment device, 10...Apparatus body, 11...Air treatment module, 12...Lighting module, 21...Fan, 22...Ultraviolet light source, 30...Main circuit, 31...Visible light source, 32...Detection circuit, 35...Adjustment circuit, 36...Conversion circuit, Vtar...Target voltage, Itar...Target current, Va, Vb...Voltage at both ends.

Claims (3)

An appliance body to be installed on a wall;
a lighting module mounted on the fixture body and including a visible light source operated by power supplied through a main circuit;
an air treatment module comprising an ultraviolet light source, a fan, and a conversion circuit, the air treatment module being attached to the fixture body in a state of being electrically connected in series to the lighting module in the main circuit, the ultraviolet light source and the fan being operated by the power supplied through the main circuit, and the conversion circuit transforming the power supplied through the main circuit to a target voltage within an operating voltage range of the fan and supplying the power to the fan;
An air treatment device comprising: The air treatment module further comprises a regulation circuit;
the adjustment circuit distributes the power input to the air treatment module to the ultraviolet light source and the fan while keeping a difference between a voltage across the lighting module and a voltage across the air treatment module within a specified range when the power is supplied to the lighting module and the air treatment module through the main circuit;
2. The air treatment device of claim 1. a power supply unit that outputs the power to the main circuit;
The air treatment module further includes a detection circuit for detecting a current output from the power supply unit to the main circuit;
the power supply unit controls the output of the power to the main circuit based on a detection result by the detection circuit so that the current is output to the main circuit at a target current within an operating current range of the visible light source.
3. An air treatment device according to claim 1 or 2.