Light shielding module and air treatment device

Abstract

To provide a light shielding module that appropriately shields light such as ultraviolet light while simplifying a configuration.SOLUTION: A light shielding module comprises a first light shielding member and a second light shielding member. The first and second light shielding members respectively have a plurality of first light shielding pieces and a plurality of second light shielding pieces arranged in a width direction. The second light shielding member is attached to the first light shielding member from one side in a height direction in a state where the second light shielding pieces are not in contact with the first light shielding pieces. In each of the first and second light shielding pieces, a base plate part extends from a non-connected end to a connected end toward the first side along the width direction, and the inclined plate part connected to the connected end of the base plate part is inclined with respect to the height direction, with such an inclination that the more inward a portion in the height direction is, the closer it is to the first side in the width direction.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION Embodiments of the present invention relate to a shading module and an air treatment device. [Background technology]

[0002] Air treatment devices are known that introduce air into a housing and perform sterilization or the like on the introduced air. In such air treatment devices, outside air is introduced into the housing through an inlet. The introduced air is then treated using at least ultraviolet light emitted from an ultraviolet light source. The treated air is then discharged to the outside of the housing through an outlet. In such air treatment devices, a light-shielding module prevents the ultraviolet light used for air treatment from emitting outside the housing. Furthermore, because the light-shielding module of such air treatment devices is disposed corresponding to the air inlet and outlet, the light-shielding module is configured to not easily block the flow of air from the outside to the inside of the air treatment device and from the inside to the outside of the air treatment device.

[0003] In an air treatment device, a shading module that blocks ultraviolet light is required to have a simplified configuration in order to reduce manufacturing labor, costs, etc. Even if the configuration is simplified, the shading module is required to adequately block ultraviolet light and adequately prevent ultraviolet light from emitting outside the housing, and is required to allow air, etc. to pass through appropriately without obstructing the air flow formed by the air treatment device. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-148732 Summary of the Invention [Problem to be solved by the invention]

[0005] The problem that the present invention aims to solve is to provide a shading module that has a simplified configuration, adequately blocks ultraviolet light and the like, and allows air and the like to pass through appropriately, and an air treatment device that is equipped with such a shading module. [Means for solving the problem]

[0006] According to an embodiment, a light-shielding module includes a first light-shielding member and a second light-shielding member, and the first light-shielding member includes a plurality of first light-shielding pieces arranged in the width direction with gaps between them. The second light-shielding member includes a plurality of second light-shielding pieces arranged in the width direction with gaps between them, and is attached to the first light-shielding member from one side in a height direction intersecting the width direction, with the plurality of second light-shielding pieces not in contact with the plurality of first light-shielding pieces. Each of the plurality of first light-shielding pieces and the plurality of second light-shielding pieces includes a base plate portion and an inclined plate portion, and the base plate portion extends along the width direction from the non-connection end to the connection end toward the first side. The inclined plate portion is connected to the connection end of the base plate in a state of bending inward in the height direction, and is inclined relative to the height direction, with the inclination being greater in the first width direction toward the innermost portion in the height direction. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a shading module that has a simplified configuration, adequately blocks ultraviolet light and the like, and allows air and the like to pass through appropriately, and an air treatment device that is equipped with such a shading module. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing an example of an air treatment device according to an embodiment. [Figure 2] FIG. 2 is a perspective view of the example air treatment device of FIG. 1, with the top wall and peripheral walls of the housing omitted. [Figure 3] FIG. 3 is a cross-sectional view showing the example of the air treatment device of FIG. 1, taken along a cross section perpendicular or substantially perpendicular to the depth direction. [Figure 4]FIG. 4 is a perspective view showing an example of the configuration of any one light-shielding module in the embodiment. [Figure 5] FIG. 5 is a cross-sectional view showing an example of the configuration of any one light-shielding module in an embodiment, taken along a cross section perpendicular or substantially perpendicular to the depth direction. [Figure 6] FIG. 6 is a cross-sectional view showing a part of the light-shielding module of FIGS. 4 and 5, taken along a cross section perpendicular or substantially perpendicular to the depth direction. [Figure 7] FIG. 7 is a cross-sectional view showing an example of a state in which ultraviolet light is incident on a light-shielding module in an embodiment etc., in a cross section perpendicular or substantially perpendicular to the depth direction of the light-shielding module. [Figure 8] FIG. 8 is a cross-sectional view showing an example of a state in which air flows through a light-shielding module in a cross section perpendicular or substantially perpendicular to the depth direction of the light-shielding module in the embodiment and the like. DETAILED DESCRIPTION OF THE INVENTION

[0009] The light-shielding module (40) of the embodiment includes a first light-shielding member (41) and a second light-shielding member (42), and the first light-shielding member (41) includes a plurality of first light-shielding pieces (45) arranged in the width direction with gaps between them. The second light-shielding member (42) includes a plurality of second light-shielding pieces (46) arranged in the width direction with gaps between them, and is attached to the first light-shielding member (41) from one side in a height direction intersecting the width direction, with the second light-shielding pieces (46) not in contact with the first light-shielding pieces (45). Each of the first light-shielding pieces (45) and the second light-shielding pieces (46) includes a base plate (51; 55) and an inclined plate (52; 56). The base plate (51; 55) extends from the non-connected end (Ea1; Ea2) to the connected end (Eb1; Eb2) toward the first side (arrow W1 side) along the width direction. The inclined plate (52; 56) is connected to the connected end (Eb1; Eb2) of the base plate (51; 55) while bending inward in the height direction, and is inclined relative to the height direction, with the inclination being such that the more inward in the height direction the portion is positioned toward the first side in the width direction. This simplifies the configuration of the light-shielding module (40), while the light-shielding module (40) appropriately blocks ultraviolet light and the like and allows air and the like to pass through appropriately.

[0010] In the embodiment of the shading module (40), the multiple second shading pieces (46) are arranged offset in the width direction relative to the multiple first shading pieces (45), with one of the multiple second shading pieces (46) positioned between two adjacent ones of the multiple first shading pieces (45). In the case of two adjacent first light-shielding pieces (45α, 45β) and a second light-shielding piece (46γ) located between the two adjacent first light-shielding pieces (45α, 45β), when a virtual line (ε1) is defined connecting the non-connected end (Ea1) of the base plate portion (51) of one of the two first light-shielding pieces (45α) located on the first side (arrow W1 side) of the two first light-shielding pieces to the non-connected end (Ea2) of the base plate portion (55) of the second light-shielding piece (46γ), the virtual line (ε1) passes through the inclined plate portion (52) of one of the two first light-shielding pieces (45β) located on the second side (arrow W2 side) opposite the first side of the two first light-shielding pieces. This configuration makes it even more difficult for light such as ultraviolet light to pass through the light-shielding module (40), and the light-shielding module (40) more appropriately blocks ultraviolet light.

[0011] In the embodiment of the shading module (40), the multiple first shading pieces (45) are arranged shifted in the width direction relative to the multiple second shading pieces (46), with one of the multiple first shading pieces (45) being located between two adjacent ones of the multiple second shading pieces (46). In the case of two adjacent second light-shielding pieces (46α, 46β) and a first light-shielding piece (45γ) located between the two adjacent second light-shielding pieces (46α, 46β), when a virtual line (ε2) is defined connecting the non-connected end (Ea2) of the base plate portion (55) of one of the two second light-shielding pieces (46α) located on the first side (arrow W1 side) of the two second light-shielding pieces to the non-connected end (Ea1) of the base plate portion (51) of the first light-shielding piece (45γ), the virtual line (ε2) passes through the inclined plate portion (56) of one of the two second light-shielding pieces (46β) located on the second side (arrow W2 side) opposite the first side of the two second light-shielding pieces. This configuration makes it even more difficult for light such as ultraviolet light to pass through the light-shielding module (40), and the light-shielding module (40) more appropriately blocks ultraviolet light.

[0012] In the light-shielding module (40) of the embodiment, the second light-shielding member (42) is formed in the same shape as the first light-shielding member (41). This further simplifies the configuration of the light-shielding module (40) and further reduces the effort and cost involved in manufacturing the light-shielding module (40).

[0013] The air treatment device (1) of this embodiment includes the above-described light-shielding module (40), a housing (2), and an ultraviolet light source (32). The housing (2) has openings (16, 17) leading to the outside. The ultraviolet light source (32) is disposed inside the housing (2) and emits ultraviolet light by emitting light. The light-shielding module (40) is disposed in the openings (16, 17) of the housing (2) or between the ultraviolet light source (32) and the openings (16, 17) inside the housing (2), with the height direction of the light-shielding module (40) aligned with the opening direction of the openings (16, 17). In the air treatment device (1), the configuration of the light-shielding module (40) is simplified, while the emission of ultraviolet light to the outside of the housing (2) through the openings (16, 17) is appropriately prevented and air and the like are allowed to pass through the light-shielding module (40) appropriately.

[0014] In the air treatment device (1) of this embodiment, a first opening (16) and a second opening (17) are formed side by side in the housing (2) and open toward the same side. The air treatment device (1) includes, as light-shielding modules, a first light-shielding module (40A) disposed between the first opening (16) or the ultraviolet light source (32) and the first opening (16) inside the housing (2), and a second light-shielding module (40B) disposed between the second opening (17) or the ultraviolet light source (32) and the second opening (17) inside the housing (2). In the first light-shielding module (40A), the inclined plate portions (52, 56) of the first light-shielding piece (45) and the second light-shielding piece (46) are located on the side of the base plate portion (51, 55) where the second opening (17) is located. In the second light-shielding module (40B), the inclined plate portions (52; 56) of the first light-shielding piece portion (45) and the second light-shielding piece portion (46) are located on the side of the base plate portions (51; 55) where the first opening (16) is located. This effectively prevents air immediately after being discharged to the outside through one of the openings (16, 17) from being introduced into the housing (2) through the other opening (16, 17).

[0015] Hereinafter, embodiments will be described with reference to the drawings.

[0016] FIG. 1 is a perspective view showing an example of an air treatment device 1 according to an embodiment. As shown in FIG. 1, the air treatment device 1 includes a housing 2. The housing 2 forms an exterior of the air treatment device 1. The air treatment device 1 (housing 2) has a depth direction (the direction indicated by arrows X1 and X2), a width direction (the direction indicated by arrows Y1 and Y2) that intersects (is perpendicular or substantially perpendicular to) the depth direction, and a height direction (the direction indicated by arrows Z1 and Z2) that intersects (is perpendicular or substantially perpendicular to) both the depth and width directions. Furthermore, in the air treatment device 1, one side in the height direction is the lower side (the arrow Z1 side), and the side opposite the lower side in the height direction is the upper side (the arrow Z2 side). In the following description, the lower side will also be referred to as the "front side" or "front surface side," and the upper side will also be referred to as the "rear side" or "rear surface side."

[0017] The housing 2 has a bottom wall 5, a top wall 6, and a peripheral wall 7, and the interior of the housing 2 is surrounded by the bottom wall 5, the top wall 6, and the peripheral wall 7. The bottom wall 5 covers the interior of the housing 2 from below in the height direction, and the top wall 6 covers the interior of the housing 2 from above in the height direction. The bottom wall 5 and the top wall 6 are disposed apart from each other in the height direction, sandwiching the interior of the housing 2 therebetween. The peripheral wall 7 extends in the height direction from the bottom wall 5 to the top wall 6, and covers the interior of the housing 2 from the outer periphery. The peripheral wall 7 covers the interior of the housing 2 from the outer periphery around the entire circumferential direction.

[0018] Fig. 2 is a perspective view of the example air treatment device 1 of Fig. 1, with the top wall 6 and peripheral wall 7 of the housing 2 omitted. Fig. 3 is a cross-sectional view of the example air treatment device 1 of Fig. 1, taken along a plane perpendicular or substantially perpendicular to the depth direction. As shown in Figs. 2 and 3, a treatment box 10 is disposed inside the housing 2.

[0019] The processing box 10 has a top plate portion 11 and a peripheral plate portion 12, and abuts against the bottom wall 5 of the housing 2 from above in the height direction. The interior of the processing box 10 is surrounded by the top plate portion 11, the peripheral plate portion 12, and the bottom wall 5 of the housing 2. The bottom wall 5 of the housing 2 covers the interior of the processing box 10 from below in the height direction, and the top plate portion 11 covers the interior of the processing box 10 from above in the height direction. The peripheral plate portion 12 extends along the height direction from the bottom wall 5 of the housing 2 to the top plate portion 11 of the processing box 10, and covers the interior of the processing box 10 from the outer periphery. The peripheral plate portion 12 covers the interior of the processing box 10 from the outer periphery around the entire circumferential direction.

[0020] The top plate 11 of the processing box 10 is positioned below the top wall 6 of the housing 2 in the height direction, and the peripheral plate 12 of the processing box 10 is positioned on the inner circumferential side of the peripheral wall 7 of the housing 2. Therefore, a space 13 is formed between the processing box 10 and the housing 2 inside the housing 2. The space 13 between the processing box 10 and the housing 2 is separated from the interior of the processing box 10 and does not communicate with the interior of the processing box 10. In addition, a power supply unit 15, a terminal block, etc. are disposed in the space 13 between the processing box 10 and the housing 2. By disposing the power supply unit 15 in the space 13 that does not communicate with the interior of the processing box 10, the power supply unit 15 does not interfere with the air flow inside the processing box 10. In addition, deterioration of the power supply unit 15 due to exposure to ultraviolet light can be suppressed.

[0021] Two openings 16, 17 are formed in the bottom wall 5 of the housing 2. Each of the openings 16, 17 opens downward in the height direction. Therefore, the openings 16, 17 open toward the same side relative to each other. The openings 16, 17 are spaced apart from each other in the width direction and are formed side by side in the width direction. Therefore, the width direction of the air treatment device 1 coincides or nearly coincides with the arrangement direction of the two openings 16, 17. The interior of the treatment box 10 opens to the outside of the housing 2 through each of the openings 16, 17.

[0022] 1 to 3, each of the openings 16 and 17 extends outward in the depth direction from the portion of the bottom wall 5 that covers the interior of the processing box 10 to the portion that covers the space 13. Therefore, the space 13 between the housing 2 and the processing box 10 also opens to the outside of the housing 2 through each of the openings 16 and 17. However, in the example of FIGS. 1 to 3, the portion of each of the openings 16 and 17 adjacent to the space 13 is closed by a closing plate 18. Therefore, the closing plate 18 suppresses the introduction of air into the space 13 through each of the openings 16 and 17 and the exhaust of air from the space 13 through each of the openings 16 and 17. The closing plate 18 is provided in a portion of each of the openings 16 and 17 that does not face the processing box 10. If the entire openings 16 and 17 face the processing box 10, the closing plate 18 need not be provided. The structure that includes the closing plate 18 as described above allows for the use of common components. For example, when forming multiple types of air treatment devices 1 with different air treatment performance by changing the size of the treatment box 10, the housing 2 is common to all types, and by changing the dimensions of the treatment box 10 and the closure plate 18 for each type, it becomes possible to accommodate multiple types of air treatment devices 1. This makes it possible to reduce manufacturing costs, etc.

[0023] As shown in FIG. 3 and other figures, the air treatment device 1 is installed on a wall 22, such as a ceiling wall, in an environmental space 21, such as a room. In one example, hanging bolts or the like are attached to the top wall 6 of the housing 2, and the air treatment device 1 is installed on the wall 22 using the hanging bolts or the like. The air treatment device 1 is installed on the wall 22 with each of the openings 16 and 17 opening to the environmental space 21. Therefore, air can be introduced from the environmental space 21 into the processing box 10 through either of the openings 16 and 17, and air can be exhausted from the processing box 10 to the environmental space 21 through either of the openings 16 and 17. In the example shown in FIG. 3 , the air treatment device 1 is installed on the wall 22 with the bottom wall 5 of the housing 2 protruding into the environmental space 21 relative to the wall 22. In another example, the air treatment device 1 is installed on the ceiling wall, which is the wall 22, with its lower side in the height direction aligned or approximately aligned with the vertically downward side (the direction of gravity).

[0024] In the example shown in FIG. 3 , a partition frame 23 is disposed inside the processing box 10, and the interior of the processing box 10 is divided into four spaces 25 to 28 by the partition frame 23. Inside the processing box 10, the space 25 is separated from the spaces 26 to 28 by the partition frame 23 and is not in communication with the spaces 26 to 28. The power supply unit 15 may be disposed in the space 25. Furthermore, the space 26 communicates with the space 27 through the space 28. Inside the processing box 10, the space 28 is disposed above the spaces 25 to 27 in the height direction. Furthermore, the spaces 26 and 27 are disposed apart from each other in the width direction, and the space 25 is located between the spaces 26 and 27 in the width direction.

[0025] Within the processing box 10, the space 26 opens to the outside of the housing 2 through an opening (first opening) 16, and the space 27 opens to the outside of the housing 2 through an opening (second opening) 17. A fan 31 is also disposed within the processing box 10. In the example shown in FIG. 3 , the fan 31 is disposed between the spaces 27 and 28, facing the opening 17. In the air processing device 1, a power supply unit 15 or the like converts power from an external power source, such as a commercial power source, and supplies the converted power to the fan 31. When the fan 31 operates in response to the power supply, an air flow is formed within the processing box 10 from one of the openings 16 and 17 to the other of the openings 16 and 17. The fan 31 is disposed in one of the spaces 26, 27, and 28, or across adjacent spaces among the spaces 26, 27, and 28.

[0026] In one example, an intake fan is used as fan 31. In this case, operation of fan 31 causes air to flow from opening 17 to opening 16 inside processing box 10, passing through spaces 27, 28, and 26 in this order. In this case, opening 17 serves as an inlet for introducing air from the outside into the inside of processing box 10 (inside housing 2), and opening 16 serves as an outlet for discharging air from the inside of processing box 10 to the outside. In another example, an exhaust fan is used as fan 31. In this case, operation of fan 31 causes air to flow from opening 16 to opening 17 inside processing box 10, passing through spaces 26, 28, and 27 in this order. In this case, opening 16 serves as an inlet for introducing air from the outside into the inside of processing box 10, and opening 17 serves as an outlet for discharging air from the inside of processing box 10 to the outside.

[0027] An ultraviolet light source 32 and a photocatalyst module 33 are disposed inside the treatment box 10. In the example of FIG. 3, the ultraviolet light source 32 and the photocatalyst module 33 form an air treatment unit that performs air treatment on air flowing inside the housing 2 from the inlet toward the outlet. In the example of FIG. 3, the ultraviolet light source 32 is disposed in the space 28, and the photocatalyst module 33 is disposed between the spaces 26 and 28. Therefore, the photocatalyst module 33 is disposed between the opening 16 and the ultraviolet light source 32. Furthermore, the photocatalyst module 33 is disposed facing the opening 16, and the ultraviolet light source 32 faces the photocatalyst module 33 from the side opposite the opening 16.

[0028] In the air treatment device 1, a power supply unit 15 or the like converts power from an external power source such as a commercial power source and supplies the converted power to an ultraviolet light source 32. The ultraviolet light source 32 includes a light-emitting element. When power is supplied, the ultraviolet light source 32 performs a light-emitting operation, causing the ultraviolet light source 32 to emit ultraviolet light. The light-emitting element provided in the ultraviolet light source 32 is, for example, an ultraviolet LED. Instead of a light-emitting element, the ultraviolet light source 32 may be a lamp other than an LED, such as a mercury lamp, a metal halide lamp, a fluorescent ultraviolet lamp, or an excimer lamp. In the example shown in FIG. 3, the ultraviolet light source 32 performs a light-emitting operation to emit ultraviolet light toward the photocatalyst module 33.

[0029] In the photocatalyst module 33, a photocatalyst is supported on the surface of a base material. In the photocatalyst module 33, a plurality (countless) 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 photocatalyst module 33, air flows through the through-holes. Therefore, in the example of FIG. 3, air flows between the spaces 26 and 28 through the through-holes of the photocatalyst module 33.

[0030] In the example shown in FIG. 3 , the ultraviolet light source 32 emits ultraviolet light with a peak wavelength in the range of 320 nm or more and 400 nm or less, i.e., UV-A. At least a portion of the ultraviolet light emitted from the ultraviolet light source 32 enters the photocatalyst module 33 directly and / or after reflection. When UV-A enters the photocatalyst module 33, active oxygen and OH radicals are generated in the photocatalyst module 33. The generated active oxygen and OH radicals then decompose viruses, fungi (bacteria), odorous substances, and the like contained in the air flowing toward the exhaust port. This allows sterilization and deodorization of the air inside the treatment box 10. Note that if the photocatalyst included in the photocatalyst module 33 is excited by visible light, a visible light source may be provided in addition to (or instead of) the ultraviolet light source 32.

[0031] In one example, an ultraviolet light source other than the ultraviolet light source 32 (or the above-mentioned visible light source) is disposed inside the treatment box 10. In this case, the ultraviolet light source other than the ultraviolet light source 32 also emits ultraviolet light by being powered on. In this example, the ultraviolet light source other than the ultraviolet light source 32 is disposed, for example, at one end of the width of the air treatment device 1 in the space 28 and emits ultraviolet light into the space 28. In this example, the ultraviolet light source other than the ultraviolet light source 32 emits ultraviolet light with a peak wavelength in the range of 200 nm or more and 320 nm or less, i.e., UV-C. By irradiating the air with UV-C from the ultraviolet light source inside the treatment box 10, such as the space 28, the activity of viruses and bacteria contained in the air flowing inside the treatment box is suppressed. This allows the air to be sterilized inside the treatment box 10. As mentioned above, UV-C suppresses the activity of viruses and the like when irradiated into the air, so it is desirable to place the ultraviolet light source that emits UV-C in a position where the ultraviolet light from the ultraviolet light source is widely irradiated at least in the space where the ultraviolet light source is placed (space 28 in this embodiment). For this reason, the ultraviolet light source that emits UV-C is placed, for example, at one end in the width direction of the air treatment device 1.

[0032] In one example, only air sterilization using UV-C may be performed, and air sterilization and deodorization using UV-A and the photocatalyst module 33 may not be performed. Furthermore, "sterilization" refers to the inactivation of viruses and bacteria (bacteria) present in the air, and terms such as "sterilization," "sterilization," and "disinfection" may be used instead of "sterilization." Therefore, although the term "sterilization" is used in the embodiment, the term "sterilization" can be replaced with "sterilization," "sterilization," and "disinfection."

[0033] When the air treatment device 1 is used, the fan 31 is operated to introduce air from the environmental space 21 or the like into the treatment box 10 through one of the openings 16, 17. Then, in the same manner as in any of the above-described examples, the air flowing inside the treatment box 10 is treated. Then, the treated air is discharged from the treatment box 10 into the environmental space 21 or the like through the other of the openings 16, 17.

[0034] 3, a visible light source 35 is disposed in the space 25 inside the processing box 10. The visible light source 35 emits visible light by performing a light emitting operation when power is supplied. The visible light from the visible light source 35 is emitted to the outside of the housing 2 and is irradiated in the environmental space 21, for example.

[0035] As shown in FIGS. 1 and 3 , the air treatment device 1 is provided with a light-shielding module 40 that blocks light such as ultraviolet light. The light-shielding module 40 is made of a metal or other material that can block ultraviolet light. The air treatment device 1 is provided with two light-shielding modules 40A and 40B. In one example, the light-shielding module (first light-shielding module) 40A is disposed in the opening (first opening) 16. In another example, the light-shielding module 40A is disposed inside the treatment box 10 (inside the housing 2) between the ultraviolet light sources, including the ultraviolet light source 32, and the opening 16. In another example, the light-shielding module (first light-shielding module) 40A is disposed between the photocatalyst module 33, which is irradiated with excitation light, and the opening 16. The light-shielding module 40A blocks ultraviolet light, thereby preventing the ultraviolet light from emitting to the outside of the housing 2 through the opening 16. In the embodiment, ultraviolet light from the ultraviolet light source 32 or the like is not emitted to the outside of the housing 2 through the opening 16 unless it passes through the light-shielding module 40A. Furthermore, air flowing into (or out of) the air treatment device 1 is not introduced (or discharged) unless it passes through the light-shielding module 40A, but the light-shielding module 40A is configured not to block the flow of introduced (or discharged) air.

[0036] In one example, the light-shielding module (second light-shielding module) 40B is disposed in the opening (second opening) 17. In another example, the light-shielding module 40B is disposed inside the processing box 10 (inside the housing 2) between the ultraviolet light sources, including the ultraviolet light source 32, and the opening 17. The light-shielding module 40B blocks ultraviolet light, thereby preventing the ultraviolet light from emitting through the opening 17 to the outside of the housing 2. In some embodiments, ultraviolet light from the ultraviolet light source 32 or the like is not emitted to the outside of the housing 2 through the opening 17 unless it passes through the light-shielding module 40B. Furthermore, air flowing into (or out of) the air processing device 1 is not introduced (or discharged) unless it passes through the light-shielding module 40B, but the light-shielding module 40B is configured not to block the flow of introduced (or discharged) air.

[0037] The configuration of any one of the light-shielding modules 40 will be described below. In the air treatment device 1, the two light-shielding modules 40A and 40B each have a configuration similar to that described below. FIGS. 4 and 5 show an example of the configuration of any one of the light-shielding modules 40 in the embodiment. As shown in FIGS. 4 and 5, the light-shielding module 40 has a depth direction (the direction indicated by arrows D1 and D2), a width direction (the direction indicated by arrows W1 and W2) that intersects (is perpendicular or substantially perpendicular to) the depth direction, and a height direction (the direction indicated by arrows H1 and H2) that intersects (is perpendicular or substantially perpendicular to) both the depth direction and the width direction. Here, FIG. 4 shows a perspective view, and FIG. 5 shows a cross section perpendicular or substantially perpendicular to the depth direction.

[0038] The light-shielding module 40 includes two light-shielding members 41 and 42. The light-shielding member (first light-shielding member) 41 includes a plurality of light-shielding pieces (first light-shielding pieces) 45, and the light-shielding member (second light-shielding member) 42 includes a plurality of light-shielding pieces (second light-shielding pieces) 46. In the light-shielding member 41, the entirety including the plurality of light-shielding pieces 45 is integrally formed, and in the light-shielding member 42, the entirety including the plurality of light-shielding pieces 46 is integrally formed. In the light-shielding module 40, the light-shielding member 42 is attached to the light-shielding member 41 from one side in the height direction (the side indicated by the arrow H2). In the light-shielding module 40, the light-shielding member 42 is attached to the light-shielding member 41 in a state in which the plurality of light-shielding pieces 46 are not in contact with any of the plurality of light-shielding pieces 45.

[0039] In the light-shielding member 41, the multiple light-shielding pieces 45 are aligned in the width direction of the light-shielding module 40. Therefore, the arrangement direction of the multiple light-shielding pieces 45 coincides or substantially coincides with the width direction of the light-shielding module 40. Each of the light-shielding pieces 45 extends along the depth direction of the light-shielding module 40, and in the light-shielding module 40, each of the light-shielding pieces 45 extends from one end to the other end in the depth direction. Furthermore, each of the light-shielding pieces 45 has a gap between it and an adjacent light-shielding piece 45, and the multiple light-shielding pieces 45 are aligned with the gap. In one example, the multiple light-shielding pieces 45 are aligned in the width direction of the light-shielding module 40 at a predetermined pitch, and are aligned at equal or substantially equal intervals.

[0040] In the light-shielding member 42, the multiple light-shielding pieces 46 are aligned in the width direction of the light-shielding module 40. Therefore, the arrangement direction of the multiple light-shielding pieces 46 coincides or substantially coincides with the width direction of the light-shielding module 40. Each of the light-shielding pieces 46 extends along the depth direction of the light-shielding module 40, and in the light-shielding module 40, each of the light-shielding pieces 46 extends from one end to the other end in the depth direction. Furthermore, each of the light-shielding pieces 46 has a gap between it and an adjacent light-shielding piece 46, and the multiple light-shielding pieces 46 are aligned with the gap. In one example, the multiple light-shielding pieces 46 are aligned in the width direction of the light-shielding module 40 at a predetermined pitch, and are aligned at equal or substantially equal intervals.

[0041] Each of the light-shielding pieces 46 is arranged so as to be offset in the width direction of the light-shielding module 40 with respect to any of the light-shielding pieces 45. In the light-shielding module 40, the light-shielding pieces 46 are offset with respect to the light-shielding pieces 45 so that a corresponding one of the light-shielding pieces (second light-shielding pieces) 46 is located between two adjacent light-shielding pieces (first light-shielding pieces) 45. The light-shielding pieces 45 are also offset with respect to the light-shielding pieces 46 so that a corresponding one of the light-shielding pieces (first light-shielding pieces) 45 is located between two adjacent light-shielding pieces (second light-shielding pieces) 46. In one example, the multiple light-shielding pieces 46 are arranged in the width direction at the same or approximately the same pitch as the multiple light-shielding pieces 45. The light-shielding pieces 46 are offset with respect to the light-shielding pieces 45 in the width direction of the light-shielding module 40 by an offset amount that is ½ or approximately ½ of the pitch.

[0042] Each of the plurality of light-shielding pieces (first light-shielding pieces) 45 includes a base plate portion (first base plate portion) 51 and an inclined plate portion (first inclined plate portion) 52, and each of the plurality of light-shielding pieces (second light-shielding pieces) 46 includes a base plate portion (second base plate portion) 55 and an inclined plate portion (second inclined plate portion) 56. In each of the light-shielding pieces 45, the base plate portion 51 and the inclined plate portion 52 extend along the depth direction of the light-shielding module 40, and in the light-shielding module 40, the base plate portion 51 and the inclined plate portion 52 of each of the light-shielding pieces 45 extend from one end to the other end in the depth direction. Furthermore, in each of the light-shielding pieces 46, the base plate portion 55 and the inclined plate portion 56 extend along the depth direction of the light-shielding module 40, and in the light-shielding module 40, the base plate portion 55 and the inclined plate portion 56 of each of the light-shielding pieces 46 extend from one end to the other end in the depth direction. Here, when focusing on one light-shielding piece 45, a distance δa1 along the width direction from the non-connected end Ec1 (the end opposite to the side connected to the base plate portion 51) of the inclined plate portion 52 of that light-shielding piece 45 to the inclined plate portion 56 of the light-shielding piece 46 adjacent to the first side (arrow W1 side) of that light-shielding piece 45, and a distance δb1 along the width direction from the non-connected end Ec1 of the inclined plate portion 52 of that light-shielding piece 45 to the inclined plate portion 56 of the light-shielding piece 46 adjacent to the second side (arrow W2 side) of that light-shielding piece 45 are defined. The intervals δa1 and δb1 are the same or approximately the same size relative to each other. Similarly, when focusing on a certain light-shielding piece 46, the interval δa2 along the width direction from the non-connected end Ec2 (the end opposite to the side connected to the base plate 55) of the inclined plate portion 56 of that light-shielding piece 46 to the inclined plate portion 52 of the light-shielding piece 45 adjacent to the first side (arrow W1 side) of that light-shielding piece 46, and the interval δb2 along the width direction from the non-connected end Ec2 of the inclined plate portion 56 of that light-shielding piece 46 to the inclined plate portion 52 of the light-shielding piece 45 adjacent to the second side (arrow W2 side) of that light-shielding piece 46 are defined. The intervals δa2 and δb2 are the same or approximately the same size relative to each other.

[0043] FIG. 6 shows a cross section of a portion of the light-shielding module 40 of FIGS. 4 and 5 , taken orthogonal or substantially orthogonal to the depth direction. FIG. 6 shows an enlarged view of a portion of the cross section shown in FIG. 5. As shown in FIGS. 4 to 6 , in each of the light-shielding pieces 45, the base plate portion 51 has a non-connection end Ea1 and a connection end Eb1, and extends along the width direction of the light-shielding module 40 from the non-connection end Ea1 to the connection end Eb1. In each of the light-shielding pieces 45, the base plate portion 51 is parallel or substantially parallel to the width direction and depth direction of the light-shielding module 40, and is orthogonal or substantially orthogonal to the height direction of the light-shielding module 40. The base plate portions 51 of the multiple light-shielding pieces 45 are not misaligned or are barely misaligned with each other in the height direction of the light-shielding module 40.

[0044] In each of the light-shielding pieces 46, the base plate portion 55 has a non-connection end Ea2 and a connection end Eb2, and extends along the width direction of the light-shielding module 40 from the non-connection end Ea2 to the connection end Eb2. In each of the light-shielding pieces 46, the base plate portion 55 is parallel or approximately parallel to the width direction and depth direction of the light-shielding module 40, and is orthogonal or approximately orthogonal to the height direction of the light-shielding module 40. The base plate portions 55 of the multiple light-shielding pieces 46 are not misaligned or are barely misaligned with each other in the height direction of the light-shielding module 40. In addition, the base plate portion 55 of each of the light-shielding pieces 46 is positioned away from the base plate portion 51 of the light-shielding piece 45 in the height direction of the light-shielding module 40.

[0045] In a preferred example, the dimension along the width direction of the light-shielding module 40 from the non-connection end Ea1 to the connection end Eb1 is the same or approximately the same for the base plate portions 51 of the multiple light-shielding pieces 45. The dimension along the width direction of the light-shielding module 40 from the non-connection end Ea2 to the connection end Eb2 is the same or approximately the same for the base plate portions 55 of the multiple light-shielding pieces 46. Furthermore, in a more preferred example, the dimension of the base plate portion 51 from the non-connection end Ea1 to the connection end Eb1 of each of the multiple light-shielding pieces 45 is the same or approximately the same as the dimension of the base plate portion 55 from the non-connection end Ea2 to the connection end Eb2 of each of the multiple light-shielding pieces 46.

[0046] Here, in the light-shielding module 40, one side in the width direction is referred to as the first side (the side indicated by the arrow W1), and the side opposite to the first side in the width direction is referred to as the second side (the side indicated by the arrow W2). In the base plate portion 51 of each light-shielding piece (first light-shielding piece) 45, the connection end Eb1 is located on the first side in the width direction relative to the non-connection end Ea1. In the base plate portion 55 of each light-shielding piece (second light-shielding piece) 46, the connection end Eb2 is located on the first side in the width direction relative to the non-connection end Ea2.

[0047] Furthermore, of two adjacent light-shielding pieces 45, one located on the first side is referred to as light-shielding piece 45α, and the other located on the second side is referred to as light-shielding piece 45β. In the light-shielding member 41, a gap is formed between a non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45α and a connected end Eb1 of the base plate portion 51 of the light-shielding piece 45β. In addition, of two adjacent light-shielding pieces 46, one located on the first side is referred to as light-shielding piece 46α, and the other located on the second side is referred to as light-shielding piece 46β. In the light-shielding member 42, a gap is formed between a non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46α and a connected end Eb2 of the base plate portion 55 of the light-shielding piece 46β.

[0048] In each of the light-shielding pieces (first light-shielding pieces) 45, the inclined plate portion 52 is connected to the connection end Eb1 of the base plate portion 51. In each of the light-shielding pieces 45, the inclined plate portion 52 is bent relative to the base plate portion 51 toward the inside in the height direction of the light-shielding module 40, i.e., toward the side in the height direction where the light-shielding member 42 is located. In each of the light-shielding pieces 45, the inclined plate portion 52 is inclined relative to the base plate portion 51 of that light-shielding piece 45, and is inclined with respect to the height direction and the width direction of the light-shielding module 40. In each of the light-shielding pieces 45, the inclined plate portion 52 is inclined with respect to the height direction, with the inclination being closer to the first side in the width direction (the side of the arrow W1) as it approaches the inner side in the height direction. Therefore, in each of the light blocking pieces 45, the inclined plate portion 52 is inclined so that the more inward in the height direction the portion, the further away in the width direction the non-connected end Ea1 of the base plate portion 51 of that light blocking piece 45.

[0049] Due to the above-described configuration, in each of the light-shielding pieces 45, the angle formed by the inclined plate portion 52 with respect to the first side in the width direction is an acute angle. In each of the light-shielding pieces 45, the angle formed by the inclined plate portion 52 with respect to the second side in the width direction, i.e., the angle θ1 between the base plate portion 51 and the inclined plate portion 52 at the connection end Eb1 of the base plate portion 51, is an obtuse angle. In each of the light-shielding pieces 45, the angle θ1 is preferably 135° or more and 170° or less. In a preferred example, the angle θ1 is the same or substantially the same among the multiple light-shielding pieces 45. In this case, the inclined plate portions 52 are parallel or substantially parallel to each other among the multiple light-shielding pieces 45.

[0050] Each inclined plate portion 52 of the light-shielding piece 45 has a non-connected end Ec1 as the end opposite to the side connected to the base plate portion 51. In each inclined plate portion 52 of the light-shielding piece 45, the non-connected end Ec1 forms the inner end in the height direction and forms the first side end in the width direction. In a preferred example, the extension lengths of the inclined plate portions 52 from the connection part to the base plate portion 51 to the non-connected end Ec1 are the same or approximately the same for each of the multiple light-shielding pieces 45.

[0051] In each of the light-shielding pieces (second light-shielding pieces) 46, the inclined plate portion 56 is connected to the connection end Eb2 of the base plate portion 55. In each of the light-shielding pieces 46, the inclined plate portion 56 is bent inward in the height direction of the light-shielding module 40, i.e., toward the side in the height direction where the light-shielding member 41 is located, relative to the base plate portion 55. In each of the light-shielding pieces 46, the inclined plate portion 56 is inclined with respect to the base plate portion 55 of that light-shielding piece 46, and is inclined with respect to the height direction and the width direction of the light-shielding module 40. In each of the light-shielding pieces 46, the inclined plate portion 56 is inclined with respect to the height direction, with the inclination being closer to the first side in the width direction (the side of the arrow W1) as it approaches the inner side in the height direction. Therefore, in each of the light-shielding pieces 46, the inclined plate portion 56 is inclined so that the more inward in the height direction the portion, the further away in the width direction the non-connected end Ea2 of the base plate portion 55 of that light-shielding piece 46 is.

[0052] Due to the above-described configuration, in each of the light-shielding pieces 46, the angle formed by the inclined plate portion 56 with respect to the first side in the width direction is an acute angle. In each of the light-shielding pieces 46, the angle formed by the inclined plate portion 56 with respect to the second side in the width direction, i.e., the angle θ2 between the base plate portion 55 and the inclined plate portion 56 at the connection end Eb2 of the base plate portion 55, is an obtuse angle. In each of the light-shielding pieces 46, the angle θ2 is preferably 135° or more and 170° or less. In a preferred example, the angles θ2 are the same or substantially the same among the multiple light-shielding pieces 46. In this case, the inclined plate portions 56 are parallel or substantially parallel to each other among the multiple light-shielding pieces 46.

[0053] Each inclined plate portion 56 of the light-shielding piece 46 has a non-connected end Ec2 as the end opposite to the side connected to the base plate portion 55. In each inclined plate portion 56 of the light-shielding piece 46, the non-connected end Ec2 forms the inner end in the height direction and forms the first side end in the width direction. In a preferred example, the extension lengths of the inclined plate portions 56 from the connection part to the base plate portion 55 to the non-connected end Ec2 are the same or approximately the same for each of the multiple light-shielding pieces 46.

[0054] Furthermore, in the light-shielding module 40, the inclined plate portion 56 of each light-shielding piece 46 is inclined in the height direction toward the side opposite to the inclined plate portion 52 of each light-shielding piece 45. That is, in each inclined plate portion 52 of each light-shielding piece (first light-shielding piece) 45, the portion closer to the arrow H1 side in the height direction is located closer to the second side (arrow W2 side) in the width direction. In contrast, in each inclined plate portion 56 of each light-shielding piece (second light-shielding piece) 46, the portion closer to the arrow H1 side in the height direction is located closer to the first side (arrow W1 side).

[0055] Furthermore, it is preferable that the angle θ2 between the base plate portion 55 and the inclined plate portion 56 in each of the light-shielding pieces 46 is the same as or approximately the same as the angle θ1 between the base plate portion 51 and the inclined plate portion 52 in each of the light-shielding pieces 45. It is also preferable that the extension length of the inclined plate portion 56 in each of the light-shielding pieces 46 is the same as or approximately the same as the extension length of the inclined plate portion 52 in each of the light-shielding pieces 45.

[0056] Each base plate portion 51 of the light-shielding piece 45 has a pair of main surfaces facing opposite each other, that is, a base plate inner surface 61 and a base plate outer surface 62. In each base plate portion 51 of the light-shielding piece 45, the base plate inner surface 61 faces inward in the height direction, facing the side where the light-shielding member 42 is located in the height direction (the side indicated by the arrow H2). In each base plate portion 51 of the light-shielding piece 45, the base plate outer surface 62 faces outward in the height direction, facing the side opposite to the side where the light-shielding member 42 is located in the height direction. In each base plate portion 51 of the light-shielding piece 45, the base plate inner surface 61 and the base plate outer surface 62 each extend from the non-connection end Ea1 to the connection end Eb1.

[0057] Furthermore, each base plate portion 51 of the light-shielding piece 45 has a base plate edge surface 63 at the non-connection end Ea1, and in each of the light-shielding pieces 45, the base plate edge surface 63 extends along the height direction from the base plate inner surface 61 to the base plate outer surface 62 at the non-connection end Ea1 of the base plate portion 51. Therefore, in each of the base plate portions 51 of the light-shielding piece 45, an intersection Pa1 between the base plate edge surface 63 and the base plate inner surface 61, and an intersection Pb1 between the base plate edge surface 63 and the base plate outer surface 62 are formed at the non-connection end Ea1. In the base plate edge surface 63 of each of the base plate portions 51 of the light-shielding piece 45, the intersection Pa1 forms the inner edge in the height direction, and the intersection Pb1 forms the outer edge in the height direction.

[0058] Each base plate portion 55 of the light-shielding piece 46 has a pair of main surfaces facing opposite each other, that is, a base plate inner surface 65 and a base plate outer surface 66. In each base plate portion 55 of the light-shielding piece 46, the base plate inner surface 65 faces inward in the height direction, facing the side in the height direction where the light-shielding member 41 is located (the side indicated by the arrow H1). In each base plate portion 55 of the light-shielding piece 46, the base plate outer surface 66 faces outward in the height direction, facing the side opposite the side in the height direction where the light-shielding member 41 is located. In each base plate portion 55 of the light-shielding piece 46, the base plate inner surface 65 and the base plate outer surface 66 each extend from the non-connection end Ea2 to the connection end Eb2.

[0059] Furthermore, each base plate portion 55 of the light-shielding piece 46 has a base plate edge surface 67 at the non-connection end Ea2, and in each of the light-shielding pieces 46, the base plate edge surface 67 extends along the height direction from the base plate inner surface 65 to the base plate outer surface 66 at the non-connection end Ea2 of the base plate portion 55. Therefore, in each of the base plate portions 55 of the light-shielding piece 46, an intersection Pa2 between the base plate edge surface 67 and the base plate inner surface 65 and an intersection Pb2 between the base plate edge surface 67 and the base plate outer surface 66 are formed at the non-connection end Ea2. In the base plate edge surface 67 of each of the base plate portions 55 of the light-shielding piece 46, the intersection Pa2 forms the inner edge in the height direction, and the intersection Pb2 forms the outer edge in the height direction.

[0060] Furthermore, when two adjacent light-shielding pieces 45α, 45β among the multiple light-shielding pieces 45 are defined as described above, the following positional relationship is established between the two adjacent light-shielding pieces (first light-shielding pieces) 45α, 45β and the light-shielding piece (second light-shielding piece) 46 located between the light-shielding pieces 45α, 45β in the width direction of the light-shielding module 40. In the following description, of the two adjacent light-shielding pieces 45α, 45β, one located on a first side in the width direction is the light-shielding piece 45α, and the other located on a second side in the width direction is the light-shielding piece 45β. In the following description, the light-shielding piece 46 located between the two adjacent light-shielding pieces 45α, 45β is referred to as the light-shielding piece 46γ.

[0061] Here, a virtual line ε1 is defined that connects the non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45α and the non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46γ between two adjacent light-shielding pieces 45α, 45β, and 46γ. In the embodiment, the virtual line ε1 passes through the inclined plate portion 52 of the light-shielding piece 45β. The virtual line ε1 is inclined in the height direction toward the side opposite to the inclined plate portion 52 of each light-shielding piece (first light-shielding piece) 45. That is, the virtual line ε1 is inclined toward the first side (arrow W1 side) in the width direction toward the arrow H1 side in the height direction. In one example, the virtual line ε1 passes through the non-connected end Ec1 of the inclined plate portion 52 of the light-shielding piece 45β. In another example, the imaginary line ε1 passes between the connection portion of the inclined plate portion 52 of the light-shielding piece 45β to the base plate portion 51 and the non-connected end Ec1. In this case, the inclined plate portion 52 of the light-shielding piece 45β protrudes toward a first widthwise side with respect to the imaginary line ε1. The imaginary line ε1 is a so-called light-shielding critical line, and at least a portion of the tip (non-connected end Ec1) of the inclined plate portion 52 of the light-shielding piece 45β overlaps with the imaginary line ε1. With this configuration, the spaces formed between the light-shielding pieces 45α, 45β, and 46γ are not excessively small and are as uniform as possible.

[0062] In a preferred example of the embodiments, the aforementioned imaginary line ε1 passes through an intersection Pb1 between the base plate edge surface 63 and the base plate outer surface 62 at the non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45α. Furthermore, the imaginary line ε1 passes through an intersection Pa2 between the base plate edge surface 67 and the base plate inner surface 65 at the non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46γ. The imaginary line ε1 connecting the intersection Pb1 of the base plate portion 51 of the light-shielding piece 45α and the intersection Pa2 of the base plate portion 55 of the light-shielding piece 46γ passes through the inclined plate portion 52 of the light-shielding piece 45β.

[0063] Furthermore, when two adjacent light-shielding pieces 46α, 46β among the plurality of light-shielding pieces 46 are defined as described above, the following positional relationship is established between the two adjacent light-shielding pieces (second light-shielding pieces) 46α, 46β and the light-shielding piece (first light-shielding piece) 45 located between the light-shielding pieces 46α, 46β in the width direction of the light-shielding module 40. In the following description, of the two adjacent light-shielding pieces 46α, 46β, one located on a first side in the width direction is the light-shielding piece 46α, and the other located on a second side in the width direction is the light-shielding piece 46β. In the following description, the light-shielding piece 45 located between the two adjacent light-shielding pieces 46α, 46β is referred to as the light-shielding piece 45γ.

[0064] Here, an imaginary line ε2 is defined that connects the non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46α and the non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45γ between two adjacent light-shielding pieces 46α and 46β and 45γ. In the embodiment, the imaginary line ε2 passes through the inclined plate portion 56 of the light-shielding piece 46β. The imaginary line ε2 is inclined with respect to the height direction toward the inclined plate portion 52 of each light-shielding piece (first light-shielding piece) 45. That is, the imaginary line ε2 is inclined toward the second side (arrow W2 side) in the width direction toward the arrow H1 side in the height direction. In one example, the imaginary line ε2 passes through the non-connected end Ec2 of the inclined plate portion 56 of the light-shielding piece 46β. In another example, the imaginary line ε2 passes between the connection portion of the inclined plate portion 56 of the light-shielding piece 46β to the base plate portion 55 and the non-connected end Ec2. In this case, the inclined plate portion 56 of the light-shielding piece 46β protrudes toward the first side in the width direction with respect to the imaginary line ε2. The imaginary line ε2 is a so-called light-shielding critical line, and at least a portion of the tip (non-connected end Ec2) of the inclined plate portion 56 of the light-shielding piece 46β overlaps with the imaginary line ε2. With this configuration, the spaces formed between the light-shielding pieces 46α, 46β, and 46γ are not excessively small and are as uniform as possible.

[0065] In a preferred example of the embodiments, the aforementioned imaginary line ε2 passes through an intersection Pb2 between the base plate edge surface 67 and the base plate outer surface 66 at the non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46α. Furthermore, the imaginary line ε2 passes through an intersection Pa1 between the base plate edge surface 63 and the base plate inner surface 61 at the non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45γ. Then, the imaginary line ε2 connecting the intersection Pb2 of the base plate portion 55 of the light-shielding piece 46α and the intersection Pa1 of the base plate portion 51 of the light-shielding piece 45γ passes through the inclined plate portion 56 of the light-shielding piece 46β.

[0066] Furthermore, in the embodiments and the like, in the light-shielding module 40, the two light-shielding members 41, 42 are preferably formed to have the same or substantially the same shape relative to each other, and more preferably to have the same or substantially the same dimensions and shape relative to each other. Note that in the light-shielding module 40, even when the light-shielding members 41, 42 have the same shape, the light-shielding members 41, 42 are arranged in different orientations relative to each other. In the example and the like of Figures 4 to 6, in the light-shielding module 40, the light-shielding member 42 is arranged in an orientation in which the light-shielding member 41 is rotated 180° or substantially 180° around a virtual axis along the width direction, such as axis η1 (see Figure 4).

[0067] In the embodiment and the like, as shown in FIG. 3 and the like, the light-shielding module 40A is disposed in the opening 16 or between the opening 16 and the ultraviolet light source with its height direction aligned with the opening direction of the opening 16. In one example shown in FIG. 3 and the like, in the light-shielding module 40A, the light-shielding member 41 is attached to the light-shielding member 42 from the side where the opening 16 is open. Therefore, the light-shielding member 42 is located on the opposite side of the light-shielding member 41 from the side where the opening 16 is open, and is located on the inner side of the housing 2. Note that in one example, in the light-shielding module 40A, the light-shielding member 42 may be attached to the light-shielding member 41 from the side where the opening 16 is open, and the light-shielding member 41 may be located on the inner side of the housing 2 with respect to the light-shielding member 42. However, in this case as well, the light-shielding module 40A is disposed with its height direction aligned with the opening direction of the opening 16.

[0068] In one example, in a light-shielding module 40A placed in the opening 16, the light-shielding member 41 is attached to the light-shielding member 42 from the side where the opening 16 is open. In this case, the opening surface of the opening 16 passes through the base plate portions 51 of each of the multiple light-shielding pieces 45 of the light-shielding member 41. In the light-shielding module 40A, the inclined plate portions 52 of the multiple light-shielding pieces 45 and the multiple light-shielding pieces 46 of the light-shielding member 42 are located on the inner side of the housing 2 with respect to the opening surface of the opening 16. In another example, in a light-shielding module 40A placed in the opening 16, the light-shielding member 42 is attached to the light-shielding member 41 from the side where the opening 16 is open. In this case, the opening surface of the opening 16 passes through the base plate portions 55 of each of the multiple light-shielding pieces 46 of the light-shielding member 42. In the light-shielding module 40A, the inclined plate portions 56 of the plurality of light-shielding pieces 46 and the plurality of light-shielding pieces 45 of the light-shielding member 41 are located on the inner side of the housing 2 with respect to the opening surface of the opening 16.

[0069] Furthermore, in the embodiments and the like, the light-shielding module 40B is disposed at the opening 17 or between the opening 17 and the ultraviolet light source with its height direction aligned with the opening direction of the opening 17. In one example such as FIG. 3 , in the light-shielding module 40B, the light-shielding member 42 is attached to the light-shielding member 41 from the side where the opening 17 is open. Therefore, the light-shielding member 41 is located on the opposite side of the light-shielding member 42 from the side where the opening 17 is open, and is located on the inner side of the housing 2. Note that in one example, in the light-shielding module 40B, the light-shielding member 41 may be attached to the light-shielding member 42 from the side where the opening 17 is open, and the light-shielding member 42 may be located on the inner side of the housing 2 with respect to the light-shielding member 41. However, in this case as well, the light-shielding module 40B is disposed with its height direction aligned with the opening direction of the opening 17.

[0070] In one example, in a light-shielding module 40B placed in the opening 17, the light-shielding member 42 is attached to the light-shielding member 41 from the side where the opening 17 is open. In this case, the opening surface of the opening 17 passes through the base plate portions 55 of each of the multiple light-shielding pieces 46 of the light-shielding member 42. In the light-shielding module 40B, the inclined plate portions 56 of the multiple light-shielding pieces 46 and the multiple light-shielding pieces 45 of the light-shielding member 41 are located on the inner side of the housing 2 with respect to the opening surface of the opening 17. In another example, in a light-shielding module 40B placed in the opening 17, the light-shielding member 41 is attached to the light-shielding member 42 from the side where the opening 17 is open. In this case, the opening surface of the opening 17 passes through the base plate portions 51 of each of the multiple light-shielding pieces 45 of the light-shielding member 41. In the light-shielding module 40B, the inclined plate portions 52 of the plurality of light-shielding pieces 45 and the plurality of light-shielding pieces 46 of the light-shielding member 42 are located on the inner side of the housing 2 with respect to the opening surface of the opening 17.

[0071] 3, light-shielding module 40A is disposed in opening 16 or between opening 16 and the ultraviolet light source with a first side (arrow W1 side) in the width direction aligned or substantially aligned with a side closer to opening 17 in the arrangement direction of openings 16, 17. In this case, light-shielding module (first light-shielding module) 40A disposed in opening (first opening) 16 is configured such that, in each of a plurality of light-shielding pieces 45 of light-shielding member 41 (a light-shielding member located on the exterior side of housing 2), inclined plate portion 52 is located on the side where adjacent opening (second opening) 17 is located relative to base plate portion 51, and in each of a plurality of light-shielding pieces 46 of light-shielding member 42 (a light-shielding member located on the interior side of housing 2), inclined plate portion 56 is located on the side where adjacent opening (second opening) 17 is located relative to base plate portion 55. That is, the wind passing through opening 17 flows out of housing 2 in the opposite direction to opening 16 (or flows into housing 2 from the opposite direction to opening 16).

[0072] In the light-shielding module 40A, the connection end Eb1 of each base plate portion 51 of the light-shielding piece portion 45 is located closer to the opening 17 than the non-connection end Ea1, and the connection end Eb2 of each base plate portion 55 of the light-shielding piece portion 46 is located closer to the opening 17 than the non-connection end Ea2. Due to this configuration, in one of the light-shielding members 41, 42 of the light-shielding module 40A, which is located on the side where the opening 16 is opened, the inclined plate portion 52 of each light-shielding piece portion 45 is inclined with respect to the opening plane of the opening 16 at an inclination located farther from the opening (second opening) 17 as the portion closer to the opening (first opening) 16 opens.

[0073] 3, light-shielding module 40B is disposed in opening 17 or between opening 17 and the ultraviolet light source in a position where a first side (arrow W1 side) in the width direction coincides with or substantially coincides with a side closer to opening 16 in the arrangement direction of openings 16, 17. In this case, in light-shielding module (second light-shielding module) 40B disposed in opening (second opening) 17, in each of the plurality of light-shielding pieces 45 of light-shielding member 41 (light-shielding member located on the exterior side of housing 2), the inclined plate portion 52 is located on the side where the adjacent opening (first opening) 16 is located relative to the base plate portion 51, and in each of the plurality of light-shielding pieces 46 of light-shielding member 42 (light-shielding member located on the interior side of housing 2), the inclined plate portion 56 is located on the side where the adjacent opening (first opening) 16 is located relative to the base plate portion 55. That is, the wind passing through opening 16 flows out of housing 2 in the opposite direction to opening 17 (or flows into housing 2 from the opposite direction to opening 17).

[0074] In the light-shielding module 40B, the connection end Eb1 of each base plate portion 51 of the light-shielding piece portion 45 is located closer to the opening 16 than the non-connection end Ea1, and the connection end Eb2 of each base plate portion 55 of the light-shielding piece portion 46 is located closer to the opening 16 than the non-connection end Ea2. Due to this configuration, in one of the light-shielding members 41, 42 of the light-shielding module 40B, which is located on the side where the opening 16 is opened, the inclined plate portion 56 of each light-shielding piece portion 46 is inclined with respect to the opening plane of the opening 17 at an inclination located farther from the opening (first opening) 16 as it approaches the opening (second opening) 17.

[0075] By configuring and arranging the light-blocking modules 40A and 40B as described above, the air flow passing through opening 16 is less likely to interfere with the air flow passing through opening 17, and the air flow passing through opening 17 is less likely to interfere with the air flow passing through opening 16.

[0076] 3, the light-shielding module 40A is arranged in a position where the light-shielding member 42 is located inside the housing 2, and the light-shielding module 40B is arranged in a position where the light-shielding member 41 is located inside the housing 2. When two light-shielding modules 40A and 40B are arranged as in the example of FIG. 3, the position of the light-shielding module 40 may be changed from the position of the light-shielding module 40A to the position of the light-shielding module 40B by rotating the entire light-shielding module 40 by 180° or approximately 180° around a virtual axis along the depth direction, such as the axis η2 (see FIG. 4). With such a configuration, the light-shielding modules 40A and 40B can be formed from common members, which reduces manufacturing costs.

[0077] Furthermore, in another preferable example, similarly to the above-described example, the light-shielding module 40A is arranged in an orientation where its first side in the width direction (arrow W1 side) coincides with or substantially coincides with the side (opening 17 side) closer to the opening 17 in the arrangement direction of the openings 16, 17, and the light-shielding module 40B is arranged in an orientation where its first side in the width direction (arrow W1 side) coincides with or substantially coincides with the side (opening 16 side) closer to the opening 16 in the arrangement direction of the openings 16, 17. However, in this example, both the light-shielding modules 40A and 40B are arranged in an orientation where the light-shielding member 42 is located inside the housing 2, or both the light-shielding modules 40A and 40B are arranged in an orientation where the light-shielding member 41 is located inside the housing 2. When two shading modules 40A and 40B are arranged in the posture shown in this example, the posture of shading module 40A can be changed to the posture of shading module 40B by rotating the entire shading module 40 by 180° or approximately 180° around a virtual axis along the height direction, such as axis η3 (see Figure 4).

[0078] As described above, in the embodiments, the light-shielding member 41 has a plurality of light-shielding pieces 45 arranged in the width direction with gaps therebetween, and the light-shielding member 42 has a plurality of light-shielding pieces 46 arranged in the width direction with gaps therebetween. The light-shielding member 42 is attached to the light-shielding member 41 from one side in the height direction with the light-shielding pieces 46 not in contact with the light-shielding pieces 45. In each of the light-shielding pieces 45, 46, the base plate portion (51; 55) extends from the non-connection end (Ea1; Ea2) to the connection end (Eb1; Eb2) toward the first side (arrow W1 side) along the width direction, and the inclined plate portion (52; 56) is connected to the connection end (Eb1; Eb2) of the base plate portion (51; 55) while bending inward in the height direction. In each of the light-shielding pieces 45, 46, the inclined plate portions (52; 56) are inclined with respect to the height direction such that the more inward the portion in the height direction, the closer to the first side in the width direction.

[0079] With this configuration, by forming the inclined plate portions 52 of the light-shielding pieces 45 by cutting and raising them in one plate member, a plurality of light-shielding pieces 45 are formed, and the light-shielding member 41 is formed. Also, by forming the inclined plate portions 56 of the light-shielding pieces 46 by cutting and raising them in one plate member, a plurality of light-shielding pieces 46 are formed, and the light-shielding member 42 is formed. Then, by attaching the light-shielding member 42 to the light-shielding member 41, the light-shielding module 40 is formed. Therefore, the light-shielding module 40 is formed from two plate members, and the configuration is simplified. By simplifying the configuration of the light-shielding module 40, the effort, cost, etc. required for manufacturing the light-shielding module 40 are reduced.

[0080] Fig. 7 shows an example of a situation in which ultraviolet light is incident on the light-shielding module 40 in the embodiment etc. Fig. 7 shows a cross section of a portion of the light-shielding module 40 that is perpendicular or substantially perpendicular to the depth direction. In the example shown in Fig. 7, the light-shielding member 42 is disposed on the inner side of the housing 2 in the light-shielding module 40, and ultraviolet light is incident on the light-shielding module 40 from the side in the height direction where the light-shielding member 42 is located.

[0081] 7, a portion of the ultraviolet light incident on the light-shielding module 40 is blocked by the light-shielding piece 46 of the light-shielding member 42 (arrow A1), and does not pass through the light-shielding member 42. Furthermore, a portion of the ultraviolet light incident on the light-shielding module 40 passes through the gaps between adjacent light-shielding piece 46 in the light-shielding member 42 (arrow A2). However, in the embodiment and the like, since the light-shielding module 40 has the configuration described above, the ultraviolet light that passes through the gaps between the light-shielding piece 46 is more likely to be blocked by the light-shielding piece 45 of the light-shielding member 41, and is less likely to pass through the light-shielding member 41. Therefore, a configuration in which ultraviolet light is appropriately blocked in the light-shielding module 40 is realized.

[0082] Furthermore, even when the light-shielding member 41 is disposed on the interior side of the housing 2 and ultraviolet light is incident on the light-shielding module 40 from the side in the height direction where the light-shielding member 41 is located, the ultraviolet light is appropriately blocked in the light-shielding module 40, similar to the example in FIG. 7 . As described above, in the embodiments etc., the ultraviolet light from the ultraviolet light source 32 etc. is appropriately blocked in the light-shielding module 40. Therefore, the ultraviolet light is appropriately prevented from being emitted to the outside of the housing 2 through each of the openings 16 and 17. Therefore, in the embodiments etc., it is possible to provide a light-shielding module that appropriately blocks ultraviolet light etc. while simplifying the configuration.

[0083] Furthermore, in the embodiments and the like, in two adjacent light-shielding pieces 45α, 45β and a light-shielding piece 46γ located between the light-shielding pieces 45α, 45β, when an imaginary line ε1 is defined connecting the non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45α located on the first side of the light-shielding pieces 45α, 45β and the non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46γ, the imaginary line ε1 passes through the inclined plate portion 52 of the light-shielding piece 45β located on the second side of the light-shielding pieces 45α, 45β. With this configuration, it becomes even more difficult for light such as ultraviolet light to pass through the light-shielding module 40, and the light-shielding module 40 can more appropriately block ultraviolet light.

[0084] Furthermore, in the embodiments and the like, in addition to blocking light as described above, a sufficient gap can be provided between the light blocking members 41, 42, resulting in a configuration that does not block the flow of air passing through the light blocking module 40. As a result, the air flow formed by the air treatment device 1 is not blocked by the light blocking module 40, and air and the like can pass through the light blocking module 40 appropriately.

[0085] In a preferred example of the embodiments, the aforementioned imaginary line ε1 passes through an intersection Pb1 between the base plate edge surface 63 and the base plate outer surface 62 at the non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45α, and passes through an intersection Pa2 between the base plate edge surface 67 and the base plate inner surface 65 at the non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46γ. The imaginary line ε1 connecting the intersection Pb1 of the base plate portion 51 of the light-shielding piece 45α and the intersection Pa2 of the base plate portion 55 of the light-shielding piece 46γ passes through the inclined plate portion 52 of the light-shielding piece 45β. With this configuration, it becomes even more difficult for light such as ultraviolet light to pass through the light-shielding module 40, and the light-shielding module 40 more appropriately blocks ultraviolet light.

[0086] Furthermore, in the embodiments and the like, in two adjacent light-shielding pieces 46α, 46β and a light-shielding piece 45γ located between the light-shielding pieces 46α, 46β, when an imaginary line ε2 is defined connecting the non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46α located on the first side of the light-shielding pieces 46α, 46β and the non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45γ, the imaginary line ε2 passes through the inclined plate portion 56 of the light-shielding piece 46β located on the second side of the light-shielding pieces 46α, 46β. With this configuration, it becomes even more difficult for light such as ultraviolet light to pass through the light-shielding module 40, and the light-shielding module 40 can more appropriately block ultraviolet light.

[0087] Furthermore, in a preferred example of the embodiments, the aforementioned imaginary line ε2 passes through an intersection Pb2 between the base plate edge surface 67 and the base plate outer surface 66 at the non-connected end Ea2 of the base plate portion 55 of the light-shielding piece 46α, and passes through an intersection Pa1 between the base plate edge surface 63 and the base plate inner surface 61 at the non-connected end Ea1 of the base plate portion 51 of the light-shielding piece 45γ. The imaginary line ε2 connecting the intersection Pb2 of the base plate portion 55 of the light-shielding piece 46α and the intersection Pa1 of the base plate portion 51 of the light-shielding piece 45γ passes through the inclined plate portion 56 of the light-shielding piece 46β. With this configuration, it becomes even more difficult for light such as ultraviolet light to pass through the light-shielding module 40, and the light-shielding module 40 more appropriately blocks ultraviolet light.

[0088] FIG. 8 illustrates an example of a situation in which air flows through the light-shielding module 40 in the embodiment. In FIG. 8, a portion of the light-shielding module 40 is shown in a cross section perpendicular or substantially perpendicular to the depth direction. In the example illustrated in FIG. 8, air flows in from the side of the light-shielding module 40 where the light-shielding member 41 is located in the height direction, and air flows out to the side of the light-shielding module 40 where the light-shielding member 42 is located in the height direction. The situation illustrated in FIG. 8 occurs when the light-shielding member 42 is located inside the housing 2 and the light-shielding module 40 is disposed between the opening (corresponding one of 16 and 17) that serves as an inlet or the inlet and the ultraviolet light source. The situation illustrated in FIG. 8 also occurs when the light-shielding member 41 is located inside the housing 2 and the light-shielding module 40 is disposed between the opening (corresponding one of 16 and 17) that serves as an outlet or the outlet and the ultraviolet light source.

[0089] In the example shown in FIG. 8 , air flows into the light-shielding module 40 through each of the gaps between the light-shielding pieces 45 of the light-shielding member 41. In the light-shielding module 40, the air flowing in through each of the gaps between the light-shielding pieces 45 is divided into a divided flow F1 flowing toward a first widthwise side and a divided flow F2 flowing toward a second widthwise side. The divided flow F1 then merges with the divided flow F2 of air flowing in through a gap adjacent to the first side, and then flows out of the light-shielding module 40 through a corresponding one of the gaps between the light-shielding pieces 46 of the light-shielding member 42 (arrow F3). The divided flow F2 then merges with the divided flow F1 of air flowing in through a gap adjacent to the second side, and then flows out of the light-shielding module 40 through a corresponding one of the gaps between the light-shielding pieces 46 of the light-shielding member 42 (arrow F3).

[0090] Here, two adjacent light-shielding pieces 45α and 45β and a light-shielding piece 46γ located between the light-shielding pieces 45α and 45β are defined as described above. Air flowing in through the gap between the light-shielding pieces 45α and 45β is divided into two streams F1 and F2 as described above. The stream F1 passes between the inclined plate portion 52 of the light-shielding piece 45α and the non-connected end Ec2 of the inclined plate portion 56 of the light-shielding piece 46γ and merges with the stream F2 of air flowing in through the gap between the light-shielding piece 45 adjacent to the first side of the light-shielding piece 45α and the light-shielding piece 45α. After merging with the stream F2 of air flowing in through the gap adjacent to the first side, the stream F1 passes through the gap between the light-shielding piece 46 adjacent to the first side of the light-shielding piece 46γ and the light-shielding piece 46γ, and flows out of the light-shielding module 40.

[0091] Furthermore, diverted air flow F2 flowing in through the gap between the light-shielding pieces 45α and 45β passes between the non-connected end Ec1 of the inclined plate portion 52 of the light-shielding piece 45β and the inclined plate portion 56 of the light-shielding piece 46γ, and merges with diverted air flow F1 flowing in through the gap between the light-shielding piece 45 adjacent to the second side of the light-shielding piece 45β and the light-shielding piece 45β. After merging with diverted air flow F1 flowing in through the gap adjacent to the second side, diverted air flow F2 flows out of the light-shielding module 40 through the gap between the light-shielding piece 46 adjacent to the second side of the light-shielding piece 46γ and the light-shielding piece 46γ. Therefore, air flowing in from the side where the light-shielding member 41 is located passes through the light-shielding module 40 appropriately and flows out to the side where the light-shielding member 42 is located.

[0092] Furthermore, even when air flows into the light-shielding module 40 from the side where the light-shielding member 42 is located, the air passes through the light-shielding module 40 appropriately, similar to the example in FIG. 8 . Note that the situation in which air flows into the light-shielding module 40 from the side where the light-shielding member 42 is located occurs when the light-shielding member 41 is located inside the housing 2 and the light-shielding module 40 is disposed between an opening (corresponding one of 16 and 17) that serves as an inlet or the inlet and the ultraviolet light source. Also, even when the light-shielding member 42 is located inside the housing 2 and the light-shielding module 40 is disposed between an opening (corresponding one of 16 and 17) that serves as an outlet or the outlet and the ultraviolet light source, the situation in which air flows into the light-shielding module 40 from the side where the light-shielding member 42 is located occurs. As described above, in the embodiment and the like, air passes through the light-shielding module 40 appropriately, and blockage of the air flow due to the light-shielding module 40 is effectively suppressed.

[0093] Furthermore, during use of the air treatment device 1, impurities such as dust may accumulate inside the light-shielding module 40. In some situations, impurities Q1 may accumulate inside the light-shielding module 40 between the inclined plate portion 52 of the light-shielding piece 45α and the inclined plate portion 56 of the light-shielding piece 46γ (see FIG. 8 ). In this case, the impurities Q1 prevent the diverted air flow F1 that flows in through the gap between the light-shielding piece 45α and the inclined plate portion 56 of the light-shielding piece 46γ from passing between the inclined plate portion 52 of the light-shielding piece 45α and the inclined plate portion 56 of the light-shielding piece 46γ. However, in the embodiment and the like, because air flows through the light-shielding module 40 as described above, the impurities Q1 are removed by the diverted air flow F2 that flows in through the gap between the light-shielding piece 45 adjacent to the first side of the light-shielding piece 45α and the light-shielding piece 45α.

[0094] In another situation, impurities Q2 accumulate inside the light-shielding module 40 between the inclined plate portion 52 of the light-shielding piece 45β and the inclined plate portion 56 of the light-shielding piece 46γ (see FIG. 8). In this case, the impurities Q2 make it difficult for the diverted flow F2 of air that flows in through the gap between the light-shielding pieces 45α and 45β to pass between the inclined plate portion 52 of the light-shielding piece 45β and the inclined plate portion 56 of the light-shielding piece 46γ. However, in the embodiment and the like, because air flows through the light-shielding module 40 as described above, the impurities Q2 are peeled off by the diverted flow F1 of air that flows in through the gap between the light-shielding piece 45 adjacent to the second side of the light-shielding piece 45β and the light-shielding piece 45β.

[0095] As described above, in the embodiments, even if impurities such as dust accumulate inside the light-shielding module 40, the accumulated impurities are properly peeled off. Therefore, the flow of air passing through the light-shielding module 40 is less affected by the impurities accumulated in the light-shielding module 40, and obstruction of the air flow due to the impurities accumulated in the light-shielding module 40 is effectively suppressed. Therefore, air passes through the light-shielding module 40 properly, and the flow of air passing through the light-shielding module 40 is properly formed.

[0096] In one example of the embodiments, the two light-shielding members 41, 42 in the light-shielding module 40 are formed to have the same or approximately the same shape. This allows the light-shielding members 41, 42 to be formed using the same manufacturing method before being attached to each other. This further simplifies the configuration of the light-shielding module 40, and further reduces the effort, cost, and the like required for manufacturing the light-shielding module 40.

[0097] In one example of the embodiments, the openings 16, 17 are formed side by side in the housing 2 toward the same side with respect to each other. In the opening (first opening) 16 or in the light-shielding module (first light-shielding module) 40A disposed between the ultraviolet light source and the opening 16, the inclined plate portion (52; 56) of each of the light-shielding pieces 45, 46 is located on the side where the opening (second opening) 17 is located with respect to the base plate portion (51; 55). Therefore, in the light-shielding member (corresponding one of 41, 42) located on the side where the opening 16 is opened in the light-shielding module 40A, the inclined plate portion (52; 56) of each of the light-shielding pieces (45; 46) is inclined with respect to the opening plane of the opening 16 at an inclination located farther from the opening (second opening) 17 as the portion closer to the opening (first opening) 16 opens.

[0098] With the above-described configuration, when opening 16 serves as an inlet, air is easily introduced into the interior of housing 2 through opening 16 from an area in environmental space 21, etc., on the opposite side to the side where opening 17 is located. This effectively prevents air immediately after being discharged into environmental space 21, etc. through opening 17 from being introduced into the interior of housing 2 through opening 16. Furthermore, when opening 16 serves as an outlet, air is easily discharged from the interior of housing 2 through opening 16 to an area in environmental space 21, etc., on the opposite side to the side where opening 17 is located. This effectively prevents air immediately after being discharged into environmental space 21, etc. through opening 16 from being introduced into the interior of housing 2 through opening 17.

[0099] In the embodiments and the like, in one example in which the openings 16, 17 are formed side by side in the housing 2 toward the same side with respect to each other, the light-shielding module 40B is disposed at the opening (second opening) 17 or between the ultraviolet light source and the opening 17. In the light-shielding module (second light-shielding module) 40B, the inclined plate portions (52; 56) of each of the light-shielding pieces 45, 46 are located on the side where the opening (first opening) 16 is located with respect to the base plate portions (51; 55). Therefore, in the light-shielding member (corresponding one of 41, 42) located on the side where the opening 17 is opened in the light-shielding module 40B, the inclined plate portions (52; 56) of each of the light-shielding pieces (45; 46) are inclined with respect to the opening plane of the opening 17 at an inclination located farther from the opening (first opening) 16 as the opening (second opening) 17 opens.

[0100] With the above-described configuration, when opening 17 serves as an inlet, air is easily introduced into the housing 2 through opening 17 from an area in the environmental space 21, etc., on the opposite side to the side where opening 16 is located. This effectively prevents air immediately after being discharged into the environmental space 21, etc. through opening 16 from being introduced into the housing 2 through opening 17. When opening 17 serves as an outlet, air is easily discharged from the housing 2 through opening 17 to an area in the environmental space 21, etc., on the opposite side to the side where opening 16 is located. This effectively prevents air immediately after being discharged into the environmental space 21, etc. through opening 17 from being introduced into the housing 2 through opening 16.

[0101] According to at least one of these embodiments, in the light-shielding module, the first light-shielding member and the second light-shielding member each have a plurality of first light-shielding pieces and a plurality of second light-shielding pieces aligned in the width direction, and the second light-shielding member is attached to the first light-shielding member from one side in the height direction with the second light-shielding pieces not in contact with the first light-shielding pieces. In each of the first light-shielding pieces and the second light-shielding piece, the base plate extends from the non-connected end to the connected end toward the first side along the width direction, and the inclined plate connected to the connected end of the base plate is inclined relative to the height direction, with the inclination being such that the more inward the height is, the closer to the first side in the width direction. This makes it possible to provide a light-shielding module that appropriately blocks ultraviolet light and the like while simplifying the configuration, and an air treatment device including the light-shielding module.

[0102] 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 embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0103] 1...air treatment device, 2...housing, 16...opening (first opening), 17...opening (second opening), 31...fan, 32...ultraviolet light source, 33...photocatalyst module, 40...light-shielding module, 41...light-shielding member (first light-shielding member), 42...light-shielding member (second light-shielding member), 45...light-shielding piece portion (first light-shielding piece portion), 46...light-shielding piece portion (second light-shielding piece portion), 51, 55...base plate portion, 52...56...inclined plate portion, Ea1, Ea2...non-connected end, Eb1, Eb2...connected end.

Claims

1. a first light-shielding member including a plurality of first light-shielding pieces arranged in a width direction with gaps between them; a second light-shielding member that includes a plurality of second light-shielding pieces that are arranged in the width direction with gaps between them, and that is attached to the first light-shielding member from one side in a height direction that intersects with the width direction, with the plurality of second light-shielding pieces not in contact with the plurality of first light-shielding pieces; Equipped with Each of the plurality of first light-shielding pieces and the plurality of second light-shielding pieces is a base plate portion extending from the non-connection end to the connection end along the width direction toward the first side; an inclined plate portion that is connected to the connection end of the base plate portion in a state of being bent inward in the height direction, and that is inclined with respect to the height direction such that a portion closer to the inner side in the height direction is positioned toward the first side in the width direction; A light blocking module comprising:

2. the plurality of second light-shielding pieces are arranged to be shifted in the width direction with respect to the plurality of first light-shielding pieces, with one of the plurality of second light-shielding pieces being positioned between two adjacent ones of the plurality of first light-shielding pieces; In two adjacent first light-shielding pieces and a second light-shielding piece located between the two adjacent first light-shielding pieces, when a virtual line is defined connecting the non-connected end of one of the base plate parts located on the first side of the two first light-shielding pieces and the non-connected end of the base plate part of the second light-shielding piece, the virtual line passes through one of the inclined plate parts located on the second side opposite to the first side of the two first light-shielding pieces, The light blocking module of claim 1 .

3. the plurality of first light-shielding pieces are arranged to be shifted in the width direction with respect to the plurality of second light-shielding pieces, with one of the plurality of first light-shielding pieces being positioned between two adjacent ones of the plurality of second light-shielding pieces; In two adjacent second light-shielding pieces and a first light-shielding piece located between the two adjacent second light-shielding pieces, when a virtual line is defined connecting the non-connected end of one of the base plate parts located on the first side of the two second light-shielding pieces and the non-connected end of the base plate part of the first light-shielding piece, the virtual line passes through one of the inclined plate parts located on the second side opposite to the first side of the two second light-shielding pieces, The light blocking module of claim 1 .

4. The light-blocking module according to claim 1 , wherein the second light-blocking member is formed in the same shape as the first light-blocking member.

5. A light blocking module according to any one of claims 1 to 4; a housing having an opening to the outside; an ultraviolet light source that is disposed inside the housing and emits ultraviolet light by operating to emit light; Equipped with The air treatment device, wherein the shading module is positioned in the opening of the housing or inside the housing between the ultraviolet light source and the opening, with the height direction of the shading module aligned with the opening direction of the opening.

6. a first opening and a second opening that open toward the same side with respect to each other are formed side by side as the openings in the housing; the light-shielding module includes a first light-shielding module disposed between the ultraviolet light source and the first opening in the first opening or in the interior of the housing, and a second light-shielding module disposed between the ultraviolet light source and the second opening in the second opening or in the interior of the housing; In the first light-shielding module, the inclined plate portion is located on a side of the base plate portion where the second opening is located in each of the first light-shielding piece portion and the second light-shielding piece portion, In the second light-shielding module, the inclined plate portion is located on a side of the base plate portion where the first opening is located, in each of the first light-shielding piece portion and the second light-shielding piece portion.

6. The air treatment device of claim 5.

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