JP2024046213A - Shading and air handling equipment - Google Patents

Abstract

[Problem] To provide a shading device and air treatment device that can improve air ventilation efficiency while ensuring shading properties. [Solution] A shading device 25 is provided with a shading member 40 in which a plurality of grooves 42 are provided in the circumferential direction on a substantially circular metal plate, extending from a central mounting portion 41 to the outer diameter side, and a plurality of shading blades 43 are provided in the circumferential direction between the plurality of grooves 42 and connected to the mounting portion 41, and the plurality of shading blades 43 are cut and raised obliquely from the mounting portion 41 in the circumferential direction. Two shading members 40 are assembled via the mounting portion 41 so that the positions of the grooves 42 and the shading blades 43 are staggered. [Selected Figure] Figure 4

Description

Embodiments of the present invention relate to a shading device and an air treatment device.

BACKGROUND ART Conventionally, a light shielding device is known in which a plurality of plate-shaped light shielding members bent at a predetermined angle through the apex portion are arranged facing in the same direction to ensure air permeability and light shielding performance.

When this shading device configuration is combined with a fan and air is blown through the shading device, there are areas where the swirling air flow caused by the rotation of the fan does not match the opening direction between adjacent shading members, reducing the efficiency of air passage.

Japanese Utility Model Application Publication No. 6-43498

The problem that this invention aims to solve is to provide a shading device and air treatment device that can improve the air ventilation efficiency while ensuring shading properties.

In the light shielding device of the embodiment, a plurality of grooves extending from the central mounting portion to the outer diameter side are provided in the circumferential direction in a substantially circular sheet metal, and the light shielding wing portions connected to the mounting portion are provided between the plurality of grooves in the circumferential direction. A plurality of light-shielding members are provided, and a plurality of light-shielding wing portions are cut and raised diagonally from the mounting portion with respect to the circumferential direction. The two light shielding members are assembled via the attachment portions so that the positions of the grooves and the light shielding wing portions are staggered.

The light blocking device of the embodiment is expected to improve air ventilation efficiency while ensuring light blocking properties.

1 is a perspective view of an air treatment device according to one embodiment; FIG. It is a sectional view of the air treatment device same as the above. FIG. 2 is a perspective view of a shading device used in the air treatment device. It is an exploded perspective view of the light shielding device same as the above. FIG. It is a top view of the light shielding device same as the above. FIG. 4 is a development view of the light blocking member of the light blocking device. It is an enlarged perspective view of a part of light shielding member of the light shielding device same as the above.

Hereinafter, one embodiment will be described with reference to the drawings.

Note that the air treatment device in the following embodiments performs any one of air treatment such as sterilization, sterilization, sterilization, sterilization, deodorization, and deodorization on the air flowing inside the air treatment device using a predetermined method. This is a device that performs In the following, the processing of the air processing device will be described as a sterilization process, but the sterilization process can be replaced with a sterilization process, a sterilization process, a sterilization process, a deodorization process, a deodorization process, and the like. Furthermore, the air processing function hereinafter refers to any of the functions of sterilization, disinfection, sterilization, sterilization, deodorization, and deodorization. Further, the predetermined method here includes light irradiation, photocatalyst, and the like. Light irradiation refers to irradiation with light having a wavelength in the UV-C region, UV-B region, UV-A region, visible light region, infrared region, or the like. Photocatalysts are activated enzymes and OH radicals that are generated by irradiating light (ultraviolet light or visible light) to a photocatalyst such as titanium oxide installed inside an air treatment device, which can reduce bacteria floating in the air. This refers to suppressing the activities of viruses and odor sources, as well as decomposing them into water and carbon dioxide.

Figures 1 to 3 show an air treatment device 10. This air treatment device 10 is a downlight type that is installed in a semi-embedded state in an embedding hole 12 formed in a ceiling board 11, which is an installation member, and has an air treatment function and a lighting function.

The air treatment device 10 comprises a housing 14, which is the main body of the device that is installed on the ceiling board 11, a processing unit 15 that is removably attached from the underside of the housing 14, and a power supply unit 16 that is attached to the outside of the housing 14.

The housing 14 is made of metal and includes a cylindrical main body 17 that is closed on the top side and open on the bottom side, and an annular flange 18 that protrudes from the bottom end of the main body 17 to the outside. A number of fins 19 are provided radially on the underside of the annular flange 18. The main body 17 is inserted into the embedding hole 12, the flange 18 is abutted against the underside of the ceiling board 11, and the ceiling board 11 is sandwiched between the main body 17 and the flange 18 by a number of mounting springs 20 attached to the outer surface of the main body 17, thereby mounting the air treatment device 10 to the ceiling board 11.

The processing unit 15 comprises a frame 22 that opens upward and downward, a fan 23 disposed on the upper side of the frame 22, an ultraviolet ray irradiation section 24 (shown in FIG. 3) disposed inside the frame 22, a shading device 25 disposed at the lower opening of the frame 22, a photocatalyst section 26 (shown in FIG. 3) disposed on the shading device 25 opposite the ultraviolet ray irradiation section 24, and a visible light irradiation section 27 (shown in FIG. 2) disposed on the lower side of the frame 22.

The frame body 22 is made of metal, and includes a cylindrical tube portion 30 that opens upward and downward, and an ultraviolet irradiation unit provided at the center of the upper surface of the tube portion 30 via a plurality of support portions 31 from the tube portion 30. It includes a mounting part 32, a light shielding device housing part 33 provided in the lower opening of the cylinder part 30, and a flange part 34 protruding around the cylinder part 30.

When the frame body 22 is attached to the housing 14, a ventilation passage 35 that communicates with the inside of the frame body 22 through the fan 23 is formed between the outer peripheral surface of the tube portion 30 of the frame body 22 and the upper surface of the flange portion 34, and the inner peripheral surface of the main body portion 17 of the housing 14 and the lower surface of the flange portion 34. The opening on the lower surface of the frame body 22 is an intake port 36 that draws air into the ventilation passage 35, and the outer peripheral side between the flange portions 18 and 34 is an exhaust port 37 that exhausts air from the ventilation passage 35. Fins 19 are arranged radially in the exhaust port 37.

Further, the fan 23 is attached to a fan pedestal 38, and is attached to the upper part of the frame 22 by this fan pedestal 38. The fan 23 is a centrifugal fan, and by rotation of an impeller, sucks in air from a suction port 23a on the bottom side communicating with the inside of the frame 22, and exhausts air from a discharge port 23b on the outer peripheral side that communicates with the ventilation path 35. do. In the fan 23, the impeller rotates counterclockwise in a plan view, and a counterclockwise swirling flow is generated in the flow of air sucked in from within the frame body 22.

The ultraviolet irradiating unit 24 is attached to the underside of the ultraviolet irradiating unit mounting portion 32 of the frame body 22, and irradiates light downward into the inside of the frame body 22. The ultraviolet irradiating unit 24 has a light-emitting element, and the light-emitting element uses a first LED (sterilizing LED) that emits ultraviolet light with a UV-C wavelength component with a peak wavelength of 300 nm or less for sterilizing air, preferably with a wavelength component of 260 to 280 nm, and a second LED (photocatalyst LED) that emits light with a wavelength component of at least 360 nm to 420 nm in the UV-A or visible range for exciting the photocatalyst supported on the photocatalyst unit 26. The wavelength of the light emitted by the first LED (sterilizing LED) is shorter than the wavelength of the light emitted by the second LED (photocatalyst LED).

Further, the light shielding device 25 is disposed in the light shielding device accommodating portion 33 of the lower opening of the frame 22 to ensure ventilation and prevent ultraviolet rays from leaking to the outside from the lower opening of the frame 22.

As shown in FIGS. 2 to 7, the light shielding device 25 is constructed by overlapping two light shielding members 40 made of metal. The light shielding member 40 includes a first light shielding member 40a and a second light shielding member 40b having a shape that is vertically inverted with respect to the shape of the first light shielding member 40a.

The light shielding member 40 is formed from a substantially circular metal plate S as shown in FIG. 8 (developed view of the light shielding member 40). The metal plate S has a mounting portion 41 in the center, a number of grooves 42 extending from the mounting portion 41 to the outer diameter side, and a number of light shielding blades 43 connected to the mounting portion 41 are provided between the grooves 42 in the circumferential direction.

A plurality of light shielding wings 43 are cut and raised diagonally from the mounting portion 41 with respect to the circumferential direction, and are formed in the shape of the light shielding member 40 . As shown in FIG. 5, the first light shielding member 40a has a plurality of light shielding wings 43 bent upward from the mounting part 41, and the second light shielding member 40b has a plurality of light shielding wings 43 bent downward from the mounting part 41. It is bent into. Therefore, the first light shielding member 40a and the second light shielding member 40b are formed using the same sheet metal S and have shapes that are reversed in the vertical direction.

The first light shielding member 40a and the second light shielding member 40b have the inclination directions of the light shielding blades 43 opposite to each other. The inclination direction of the light shielding blades 43 of the upper first light shielding member 40a is such that the direction in which air flows from between the light shielding blades 43 toward the fan 23 coincides with the direction of the swirling flow that draws in air as the fan 23 rotates.

The mounting portion 41 is formed into a star shape having a plurality of substantially triangular connecting portions 44 around which each light shielding wing portion 43 is connected.

The mounting portion 41 has one central hole 45 in the center and multiple mounting holes 46 on the periphery. The first light-shielding member 40a and the second light-shielding member 40b are combined and connected using the mounting holes 46 on the periphery.

The number of attachment holes 46 in the peripheral portion is smaller than the number of light shielding wings 43 and is an even number, for example eight. In this case, the attachment holes 46 are arranged at positions shifted by 45 degrees with the center hole 45 as the center. Here, as shown in FIG. 3, if every other mounting hole 46 arranged in the circumferential direction is a first mounting hole 46a and a second mounting hole 46b, the first light shielding member 40a and the second light shielding member When the member 40b is assembled so that the first mounting holes 46a and the second mounting holes 46b match each other, the first light shielding member 40a and the second light shielding member 40b will close the groove 42 and light shielding. The positions of the wing portions 43 are the same in plan view, which is the direction in which the first light shielding member 40a and the second light shielding member 40b are combined, and light leaks from the groove portion 42. This is because the first light shielding member 40a and the second light shielding member 40b are formed using the same sheet metal S and have shapes that are reversed in the vertical direction.

When the first light-shielding member 40a and the second light-shielding member 40b are combined with the first mounting hole 46a and the second mounting hole 46b being different from each other and shifted in angle by a predetermined number of mounting holes 46, as shown in FIG. 7, the positions of the groove portion 42 and the light-shielding blade portion 43 of the first light-shielding member 40a and the second light-shielding member 40b are staggered in a plan view, and the groove portion 42 is covered by the light-shielding blade portion 43, thereby providing light-shielding properties.

The light-shielding blade portion 43 is flat and formed in a fan shape with a wider outer diameter side than the width at the center where it is connected to the connecting portion 44 of the mounting portion 41.

FIG. 9 shows a part of the second light shielding member 40b. A light-shielding wing portion 43 is bent from one side of the connecting portion 44 of the central attachment portion 41 to the lower surface side via a bending portion 47. The bent portion 47 is provided at a position away from the connecting portion 44 adjacent to the connecting portion 44 where the bent portion 47 is bent. Thereby, the light shielding wing portion 43 can be bent at a predetermined angle via the bending portion 47 without affecting the adjacent connecting portion 44.

A protruding portion 48 is provided at a position opposite the bending portion 47, protruding in a direction away from the bending portion 47. This protruding portion 48 allows the folding machine that folds the light-shielding blade portion 43 to grasp and fold the area including the protruding portion 48, ensuring a gripping margin for the folding machine and ensuring reliable folding.

A cutout portion 49 is provided opposite to the protrusion portion 48 of the adjacent light shielding wing portion 43 . By bending the bending part 47 at the side position of this notch part 49, the first edge 43a side where the protruding part 48 of the light-shielding wing part 43 is provided protrudes toward the lower surface side of the attachment part 41, and the light-shielding wing part A second edge 43 b of the portion 43 opposite to the first edge 43 a and provided with a notch 49 protrudes toward the upper surface side of the attachment portion 41 . The second edge 43b projects beyond the position of the bent portion 47 via the notch 49 to the side opposite to the first edge 43a.

A chamfered portion 50 is provided on the outer diameter side of the first edge portion 43a of the light-shielding blade portion 43.

The first light-shielding member 40a has the same structure as the second light-shielding member 40b, except that the light-shielding blade portion 43 is bent upward.

The two light-shielding members 40 are assembled via the mounting portion 41 so that the grooves 42 and the light-shielding blades 43 of the two light-shielding members 40 are staggered. Furthermore, the light-shielding blades 43 of the light-shielding members 40 protrude from one side and the other side of the mounting portion 41, so that the light-shielding blades 43 of the assembled two light-shielding members 40 overlap when viewed from the outer diameter direction, as shown in FIG. 6.

As shown in Figures 2 and 3, a central light shielding member 51 is disposed on the central mounting portion 41 of the light shielding device 25. The light shielding device 25 is assembled integrally by screwing the screws that pass through the mounting holes 46 of the two light shielding members 40 into this central light shielding member 51.

The light shielding device 25 is accommodated in the light shielding device accommodating portion 33 of the frame body 22 and is held by a lens, which will be described later, of the visible light irradiation unit 27 attached to the lower surface side of the frame body 22. At this time, the chamfered part 50 of the first light shielding member 40a on the upper side comes into linear contact with the upper surface side of the light shielding device housing part 33, and the chamfered part 50 of the second light shielding member 40b on the lower side irradiates visible light. The light shielding device 25 is stably held by linearly abutting the lens of the portion 27, which will be described later.

As shown in FIG. 3, the photocatalyst unit 26 is disposed on the central light shielding member 51 and faces the lower side of the ultraviolet ray irradiation unit 24. The photocatalyst unit 26 is supported by a support on which a photocatalyst such as titanium oxide is held and coated, and when it receives ultraviolet rays or visible light with a wavelength component of at least 360 nm to 420 nm of UV-A from the ultraviolet ray irradiation unit 24, it generates active enzymes and OH radicals, and the generated active enzymes and OH radicals break down odor components in the air to deodorize and eliminate odors, and suppress viral activity.

The visible light irradiation unit 27 also includes an annular light source module 54 attached to the lower surface side of the flange portion 34 of the frame body 22 and a transparent light source module 54 attached to the lower surface side of the flange portion 34 of the frame body 22 covering the light source module 54. The lens 55 is a light cover.

The light source module 54 includes a substrate that is annular or divided into several parts and assembled into a ring, and a number of light-emitting elements that emit visible light and are mounted on the substrate.

The lens 55 is optically transparent and is formed in an annular shape with an opening 56 in the center. The opening 56 of the lens 55 is smaller in diameter than the bottom opening of the light blocking device housing portion 33 of the frame body 22, and a support portion 57 that supports the light blocking device 25 arranged in the light blocking device housing portion 33 of the frame body 22 is provided on the edge of the opening 56. The opening 56 of the lens 55, together with the bottom opening of the light blocking device housing portion 33 of the frame body 22, constitutes the air intake 36.

The power supply unit 16 is disposed on the side of the main body 17 together with a terminal block 61 by a mounting member 60 attached to the top surface of the main body 17 of the housing 14. The power supply unit 16 is wired and connected to the terminal block 61, and receives power supplied by a power line connected to the terminal block 61. The power supply unit 16 includes a fan power supply unit that rotates the fan 23, an ultraviolet light power supply unit that turns on the ultraviolet light irradiation unit 24, and a visible light power supply unit that turns on the visible light irradiation unit. The power supply unit 16 may be a separate type that is not fixed to the housing 14 and is electrically connected by a cable.

Next, the operation of the air treatment device 10 will be explained.

As the fan 23 rotates, external air is sucked into the lower surface of the fan 23 from the intake port 36 through the light shielding device 25 and the inside of the frame 22, and ventilation between the casing 14 and the frame 22 is generated from the outer periphery of the fan 23. The air is exhausted to the outside from the exhaust port 37 through the passage 35.

The inside of the frame 22 is irradiated with light in the ultraviolet region from the ultraviolet irradiation unit 24, and the air passing through the inside of the frame 22 is irradiated with the light in the ultraviolet region to be sterilized.

The light in the ultraviolet region from the ultraviolet irradiation section 24 is also irradiated onto the opposing photocatalyst section 26 . The photocatalyst section 26 generates active enzymes and OH radicals by being irradiated with visible light or light in the ultraviolet region of the UV-A wavelength component of at least 360 nm to 420 nm irradiated from the ultraviolet irradiation section 24. The activated enzymes and OH radicals decompose odor components in the air, deodorize and deodorize them, and suppress the activity of viruses.

By lighting the visible light irradiation section 27, visible light is irradiated downward.

In addition, in the light shielding device 25, the two light shielding members 40 are combined in a plan view so that the positions of the grooves 42 and the light shielding blades 43 are staggered, ensuring light shielding properties and ventilation. That is, in the two light shielding members 40, the second edge 43b of the upper first light shielding member 40a is positioned between the first edge 43a of the upper first light shielding member 40a and the first edge 43a of the lower second light shielding member 40b, so that light cannot pass through the two light shielding members 40 in a straight line, ensuring light shielding properties. In addition, the light shielding blades 43 of the two light shielding members 40 are staggered to ensure air circulation.

Furthermore, the inclination direction of the light shielding blades 43 of the upper first light shielding member 40a located on the fan 23 side is the direction in which the air flows from between the light shielding blades 43 toward the fan 23, and the direction in which air flows through the rotation of the fan 23. Since the direction of the suction swirl flow matches, the air flowing out from between the light shielding blades 43 of the first light shielding member 40a flows smoothly to the fan 23, and the air is sterilized and deodorized per unit time. Your abilities will improve.

As described above, in the light shielding device 25 of the present embodiment, a plurality of grooves 42 extending from the central mounting portion 41 to the outer diameter side are provided in the substantially circular sheet metal S in the circumferential direction, and between these grooves 42. A plurality of light shielding blades 43 connected to the mounting part 41 are provided in the circumferential direction, and the plurality of light shielding blades 43 are formed by using two light shielding members 40 cut and raised diagonally from the mounting part 41 with respect to the circumferential direction. The two light shielding members 40 are assembled via the attachment portions 41 so that the grooves 42 and the light shielding wing portions 43 of the two light shielding members 40 are in alternate positions. Can improve ventilation efficiency.

Furthermore, since the light-shielding wings 43 of the light-shielding member 40 are protruded from one side and the other side of the attachment part 41, the light-shielding wings 43 of the two combined light-shielding members 40 overlap when viewed from the outer diameter direction. By wrapping, the light shielding device 25 can be made thinner.

Furthermore, even if two light-shielding members 40 are formed using the same metal plate S in a shape that is inverted in the vertical direction, the positions of the grooves 42 and light-shielding blades 43 of the two light-shielding members 40 can be staggered by combining the two light-shielding members 40 with an angle shifted by a specified number of mounting holes 46.

In addition, in the air treatment device 10, the air circulated within the housing 14 can be treated by irradiating it with ultraviolet light through the shading device 25 by rotating the fan 23, and the shading device 25 can prevent ultraviolet light from leaking to the outside.

In addition, the air treatment device 10 can treat the air circulating inside the housing 14 by irradiating it with ultraviolet light through the shading device 25, and the shading device 25 can prevent this ultraviolet light from leaking to the outside.

Furthermore, by providing a photocatalyst section 26 inside the housing 14 that is irradiated with light from the ultraviolet irradiation section 24, it is possible to decompose odorous components in the air to deodorize and eliminate odors, and suppress viral activity.

In addition, light can be irradiated onto the air drawn into the housing 14 through the light blocking device 25 from the central air intake 36 of the annular visible light irradiation unit 27.

The air treatment device 10 is not limited to being combined with a downlight type lighting fixture, but may be combined with other types of lighting fixtures, or may be combined with a device dedicated to air treatment that does not have a lighting function.

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

REFERENCE SIGNS LIST 10 Air treatment device 14 Housing 23 Fan 24 Ultraviolet ray irradiation section 25 Light shielding device 26 Photocatalyst section 27 Visible light irradiation section 36 Air intake 40 Light shielding member 41 Mounting section 42 Groove section 43 Light shielding blade section 46 Mounting hole S Metal plate

Claims (6)

A light-shielding member is provided in a substantially circular metal plate, in which a plurality of grooves are provided in the circumferential direction from a central mounting portion to an outer diameter side, and a plurality of light-shielding blades are provided in the circumferential direction between the plurality of grooves and connected to the mounting portion, and the plurality of light-shielding blades are cut and raised obliquely from the mounting portion in the circumferential direction,
A light-shielding device, characterized in that the two light-shielding members are assembled via the mounting portion so that the positions of the groove portions and the light-shielding blade portions are staggered. The light shielding device according to claim 1, wherein the light shielding wing portion protrudes from one side of the mounting portion and from the other side opposite to the mounting portion. The mounting portion has a plurality of mounting holes along the circumferential direction,
A claim characterized in that the two light shielding members are assembled with their angles shifted by a predetermined number of the mounting holes, so that the positions of the groove portion and the light shielding wing portion of the two light shielding members are staggered. Item 1. The light shielding device according to item 1. With the casing;
a fan that circulates external air within the housing;
an ultraviolet irradiation unit that irradiates the air circulated within the housing with at least light in the ultraviolet region;
The light shielding device according to any one of claims 1 to 3, which is disposed in a circulation path of air circulated within the housing;
An air treatment device comprising: The air treatment device according to claim 4, further comprising a photocatalyst section that is disposed within the housing and is irradiated with light from the ultraviolet irradiation section. a visible light irradiation unit that is provided in an annular shape having an air intake port at the center and that irradiates visible light;
The light blocking device is disposed at the air intake,
The air treatment device according to claim 4, wherein the ultraviolet irradiating unit irradiates light onto air that has passed through the light blocking device from the air intake port.

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