WO2021075496A1

WO2021075496A1 - Ultraviolet ray irradiation device, ultraviolet ray irradiation system, ultraviolet ray irradiation method, and simulation method

Info

Publication number: WO2021075496A1
Application number: PCT/JP2020/038913
Authority: WO
Inventors: 謹秀五関; 弘和梅景; 淳史長尾; 川端　隆司; 敦司大霜
Original assignee: サンエナジー株式会社
Priority date: 2019-10-17
Filing date: 2020-10-15
Publication date: 2021-04-22
Also published as: JPWO2021075496A1

Abstract

Provided are an ultraviolet ray irradiation system and an ultraviolet ray irradiation method that enable an efficient disinfection process in a short time period while safety is prioritized and that enable ultraviolet ray irradiation at an arbitrarily defined timing in an arbitrarily defined disinfection target region.　An ultraviolet ray irradiation device 100 has: an ultraviolet ray emission means 101 capable of outputting an ultraviolet ray including a predetermined main wavelength; and a cutoff means 105 that has at least a part thereof disposed to oppose the ultraviolet ray emission means 101 and that cuts off at least a part of the ultraviolet ray, wherein the cutoff means 105 is configured to be switchable between a cutoff state of the ultraviolet ray and a non-cutoff state thereof.

Description

Ultraviolet irradiation device, ultraviolet irradiation system, ultraviolet irradiation method and simulation method

The present invention relates to an ultraviolet irradiation device, an ultraviolet irradiation system, an ultraviolet irradiation method, and a simulation method for sterilizing and sterilizing indoors and the like.

In medical facilities and commercial complexes, as measures against bacteria and viruses to prevent infection, measures centered on spraying various chemical disinfectants and wiping methods are being taken, but as measures against bacteria and viruses. There is no choice but to rely on people and drug sprayers, and while it takes time to work and labor such as drug management, many accidents due to infection are reported every year, so a simple and easy alternative technology is required.

Light with a wavelength in the short wavelength (near ultraviolet) region (UVC region) of ultraviolet rays (ultraviolet light) destroys bacteria by directly destroying the deoxyribonucleic acid (DNA) of the bacteria (bacteria) by the energy (light energy). It is known to have the ability to inactivate and have a high bactericidal effect that does not produce resistant bacteria.

For this reason, ultraviolet lamps (sterilization lamps) capable of outputting light (ultraviolet rays) with wavelengths in the UVC range have been developed and commercialized, and manufacturing plants mainly in the medical / nursing care sites, water and sewage purification, and food fields. It has been used as a method for simply and effectively preventing infection, improving the environment such as water and air, and ensuring food safety.

Specifically, in the past, as a countermeasure against bacteria and viruses that floated and fell indoors, an ultraviolet light source light that can be easily installed on a wall or ceiling and outputs ultraviolet rays with a wavelength in the UVC range, and a portable air purifier. Products with a similar ultraviolet light source built into the machine unit are commercially available.

By the way, ultraviolet rays with wavelengths in the UVC region are especially dangerous when they are applied to the human body. For this reason, conventional devices (ultraviolet light sources for sterilization) perform sterilization treatment by irradiating in an unmanned state (see, for example, Patent Document 1), and indirectly so as to avoid the human body when irradiating in a manned state. Those that are irradiated and sterilized (see, for example, Patent Document 2) are generally used.

In sterilization with an ultraviolet light source light, the ultraviolet light source light is generally turned on at the timing of the sterilization process and turned off when the sterilization process is not performed (in the case of a manned person). Is switching.

Japanese Unexamined Patent Publication No. 10-248759 Jikkenhei 5-20717

However, there is a limit to efficient sterilization in a manned space with all conventional devices. Specifically, an apparatus that irradiates ultraviolet rays in an unmanned state to perform sterilization treatment cannot be operated during a manned period. Further, in a device that indirectly irradiates ultraviolet rays to perform sterilization treatment, even if the device is capable of irradiating ultraviolet rays within a predetermined range during an unmanned period, the ultraviolet irradiation range is unmanned in the case of manned. Since the direction is limited, there is a problem that it is difficult to sterilize the air in a manned space (for example, indoors) at all times.

When the ultraviolet light source lamp is a low-pressure mercury lamp, it takes a certain amount of time (about several minutes) from the off (off) state to output light having sufficient energy to be sterilized. Needs. For example, in a hospital, etc., when another patient uses the same space after examining and treating a patient infected with a (strongly infectious) virus in a doctor's office or operating room, the hospital staff such as the other patient or doctor Sterilization of the space is desired to prevent secondary infection with. However, if it takes a long time to start sterilization with an ultraviolet light source lamp, there is a problem that the waiting time of the patient becomes long.

Furthermore, for example, when a temporary sterilization target area (for example, a temporary medical tent) is required in the event of a disaster, etc., it is immediately applied to the sterilization target area unintentionally provided at an arbitrary location. It was very difficult (almost impossible).

In addition, the conventional portable air purifier unit only purifies the air that has passed through the unit, and cannot efficiently irradiate an unmanned room with ultraviolet rays. Further, when the air purifier unit is carried into a temporary tent for medical use, for example, even if the air inside the temporary tent can be purified to some extent, the contaminated air leaking to the outside of the temporary tent There is no countermeasure and there is a problem in terms of safety.

In view of such circumstances, the present invention enables efficient sterilization treatment in a short time while giving priority to safety, and also enables irradiation of ultraviolet rays in an arbitrary sterilization target area at an arbitrary timing. It is intended to provide an irradiation device, an ultraviolet irradiation system, an ultraviolet irradiation method, and a simulation method.

The present invention has an ultraviolet light emitting means capable of outputting ultraviolet rays including a predetermined main wavelength, and a blocking means in which at least a part thereof is arranged to face the ultraviolet light emitting means to block at least a part of the ultraviolet rays. The present invention relates to an ultraviolet irradiation device characterized in that the ultraviolet blocking state can be switched between a blocking state and a non-blocking state by the blocking means.

Further, the present invention is an ultraviolet irradiation system having the above-mentioned ultraviolet irradiation device and irradiating the target area with the ultraviolet rays, wherein the target area is a region partitioned by the partitioning means. It depends on the irradiation system.

Further, the present invention is provided separately from the ultraviolet light emitting means capable of outputting ultraviolet rays containing a predetermined main wavelength with respect to the target region, the flow path through which the air in the target region passes, and the ultraviolet light emitting means. The present invention relates to an ultraviolet irradiation system, which comprises other ultraviolet light emitting means capable of outputting ultraviolet rays including a predetermined main wavelength to the air passing through the flow path.

Further, the present invention is based on the ultraviolet light emitting means capable of outputting ultraviolet rays containing a predetermined main wavelength to the target area and the irradiation state of the ultraviolet rays output from the ultraviolet light emitting means, and the degree of cleaning in the target area. Alternatively, the present invention relates to an ultraviolet irradiation system characterized by having an estimation means for estimating irradiation conditions necessary for cleaning the target area.

Further, the present invention is an ultraviolet irradiation method for irradiating a target region with ultraviolet rays having a main wavelength of a sterilization region, the step of arranging an ultraviolet irradiation device capable of outputting the ultraviolet rays in the target region, and the ultraviolet irradiation device. The present invention relates to an ultraviolet irradiation method characterized by having a step of switching between a blocked state and a non-blocked state of ultraviolet rays by a blocking means.

Further, the present invention comprises the step of outputting ultraviolet rays containing a predetermined main wavelength to the target region from the ultraviolet light emitting means, and the other ultraviolet light emitting means provided in the flow path through which the air in the target region passes. The present invention relates to an ultraviolet irradiation method characterized by having a step of outputting ultraviolet rays containing a predetermined main wavelength to air passing through the flow path.

Further, in the present invention, based on the step of outputting ultraviolet rays including a predetermined main wavelength from the ultraviolet light emitting means to the target area and the irradiation state of the output ultraviolet rays, the degree of cleanliness in the target area or the degree of cleanliness in the target area is determined by the estimation means. The present invention relates to an ultraviolet irradiation method, which comprises a step of estimating an ultraviolet irradiation condition necessary for cleaning the target area.

Further, the present invention is a simulation method in the case of outputting ultraviolet rays containing a predetermined main wavelength to a target region from an ultraviolet light emitting means, the step of accepting an input of a condition, and the simulation means based on the above conditions. It relates to a simulation method characterized by having a step of simulating the irradiation conditions of ultraviolet rays necessary for cleaning the target area.

According to the present invention, an ultraviolet irradiation device / ultraviolet rays that enables efficient sterilization treatment in a short time while giving priority to safety and can irradiate ultraviolet rays in an arbitrary sterilization target area at an arbitrary timing. It can exert an excellent effect that it can provide an irradiation system, an ultraviolet irradiation method, and a simulation method.

It is a top view which shows the outline of the structure of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a side view which shows the outline of the structure of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a top view which shows the outline of the structure of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a block diagram which shows an example of the circuit which performs the drive control of the ultraviolet irradiation system which concerns on embodiment of this invention. (A) It is a graph which shows the relationship between the output wavelength distribution of the UV lamp provided in the ultraviolet irradiation system which concerns on embodiment of this invention, and the UV absorption rate of DNA, and (B) the relationship between the UV absorption rate of DNA and the sterilization rate by UV. It is a graph which shows. It is a table which shows the list of the amount of light energy required for inactivation by UV for each bacterial species. It is a schematic diagram which shows the switching of the blocking state and the non-blocking state in the ultraviolet irradiation system which concerns on embodiment of this invention. It is a schematic diagram which shows the switching of the blocking state and the non-blocking state in the ultraviolet irradiation system which concerns on embodiment of this invention. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A) schematic diagram, (B) top view of the ultraviolet irradiation apparatus. It is a figure which shows the outline of the ultraviolet irradiation apparatus which concerns on embodiment of this invention, is (A) front view, (B) top view. It is a perspective view which shows the outline of the ultraviolet irradiation apparatus which concerns on embodiment of this invention. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A) top view, (B) perspective view. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A)-(C) side view, (D) top view. It is a side view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a side view which shows the outline of the structure of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a top view which shows the outline of the structure of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A) top view, (B) perspective view. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A) top view, (B) side view, (C) side view. It is a top view which shows the outline of the structure of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a top view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a side view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a side view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a side view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A) front view, (B) perspective view. It is a perspective view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a perspective view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a side view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A) perspective view, (B) perspective view, (C) perspective view, (D) side view, (E) side view. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A) block diagram, (B) plan view, (C) plan view, (D) plan view. It is a perspective view which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention. It is a figure which shows the outline of the ultraviolet irradiation system which concerns on embodiment of this invention, is (A) side view, (B) side view, (C) block diagram, (D) schematic view.

Hereinafter, embodiments of the ultraviolet irradiation system 200 and the ultraviolet irradiation device 100 according to the present invention will be described with reference to FIGS. 1 to 31. In this drawing and each of the following drawings, some configurations will be omitted as appropriate to simplify the drawings. Further, in this figure and each subsequent drawing, the size, shape, thickness, etc. of the member are exaggerated as appropriate. Further, regarding each component constituting the ultraviolet irradiation system 200 and the ultraviolet irradiation device 100, the same component is indicated by the same reference numeral in each embodiment, and detailed description thereof will be omitted.

<Ultraviolet irradiation device and ultraviolet irradiation system>
<First Embodiment>
FIG. 1 is a top view (plan view) showing an outline of the ultraviolet irradiation system 200 of the embodiment. The ultraviolet irradiation system 200 of the present embodiment is a system in which an ultraviolet irradiation device 100 is arranged in a target area S and the target area S is irradiated with ultraviolet rays including a predetermined main wavelength.

The details of the ultraviolet irradiation device 100 will be described later, but here, as an example, it is a portable type (structure having portability) and can output (irradiate) ultraviolet rays having a wavelength in the sterilization region.

The target area S refers to an area to be sterilized / purified by the ultraviolet irradiation device 100, and as an example, refers to an area at least partially partitioned from another area by the partitioning means 150. Here, the partitioning means 150 is, for example, a means for subsequently partitioning at least a part of a certain space (for example, outdoors, shelter, etc.), and is a (medical) tent, a dome (air dome), a partition, or a partition. ) And so on. That is, as an example, the target area S refers to an inner area in which a part of a certain space (for example, outdoors, shelter, etc.) is subsequently partitioned by the partitioning means 150.

To give a specific example, in the event of an emergency such as a disaster, in order to deal with and treat victims, people requiring rescue, people to be treated (patients), etc., treatment outdoors (places other than medical facilities) and medical facilities If necessary, the partitioning means 150 is arranged in a place (corridor, lobby, etc.) other than the room (operating room) to partition the target area S.

The target area S of the present embodiment is a specific or unspecified one or more human beings (victims, people requiring rescue, treatment target persons (patients), etc., medical workers who deal with them, treatments, etc.) Hereinafter, these persons may be collectively referred to as “target persons”).

As shown in FIG. 3A, in the ultraviolet irradiation system 200 of the present embodiment, the ultraviolet irradiation device 100 is arranged inside the target area S partitioned by the partition means 150. For example, the target area S is partitioned at an arbitrary timing and an arbitrary range (shape) as needed, and the ultraviolet irradiation device 100 is carried into the target area S from the outside. Alternatively, it is stored (installed) in advance in the target area S (for example, indoors), and is moved / installed at a predetermined position as needed.

Further, as shown in FIG. 6B, in the ultraviolet irradiation system 200 of the present embodiment, the ultraviolet irradiation device 100 may form a part of the partition means 150. When the target area S is partitioned by the partitioning means 150, the ultraviolet irradiation device 100 is installed as a part thereof.

In this way, in the ultraviolet irradiation system 200, the ultraviolet irradiation device 100 irradiates the target area S with ultraviolet rays having a wavelength of the sterilization region to sterilize and purify the air in the target area S and / or to the target area S. Sterilizes and purifies the surface of existing articles and the human body of the target person.

The "section" by the section means 150 is continuously surrounded by the section means 150 as shown in FIGS. (A) and (B), and there is no portion communicating with the outside of the target area S (completely). It may be in a closed state (or almost completely), or a part (a part such as a top surface or a side surface) is opened, and the target area S is shown in FIGS. There may be a part that communicates with the outside of the.

Further, the partitioning means 150 may be an existing wall, and the target area S may be indoors or the like.

Further, in the example of FIG. 1, one ultraviolet irradiation device 100 is arranged in one target area S, but a plurality of ultraviolet irradiation devices 100 may be arranged in one target area S (in each of the following figures). Is the same).

<Ultraviolet irradiation device>
2 and 3 are diagrams showing an outline of the ultraviolet irradiation device 100 (100A) in the ultraviolet irradiation system 200 of the present embodiment. 2 and 3 are schematic views showing a state in which the ultraviolet irradiation device 100 is arranged in the target area S, and FIGS. 2 (A) and 3 (D) show the state of the ultraviolet irradiation device 100 in a manned state. 2 (B) and 2 (C) are side schematic views showing a state of the ultraviolet irradiation device 100 in an unmanned state. Further, FIG. 3 (A) is a top schematic view corresponding to FIGS. 2 (A) and 2 (D) showing the state of the ultraviolet irradiation device 100 in a manned state, and FIGS. 3 (B) and 3 (C). Is a top view showing a state of the ultraviolet irradiation device 100 in an unmanned state. FIG. 3B corresponds to FIG. 2B, and FIG. 3C corresponds to FIG. 2C. Further, FIG. 4 is a block diagram showing an example of a circuit configuration for driving and controlling the ultraviolet irradiation device 100.

With reference to FIGS. 2 and 3, the ultraviolet irradiation device 100 of the present embodiment is portable (has portable) as an example, and has an ultraviolet light emitting means 101, a blocking means 105, and a covering means 103. .. That is, the ultraviolet irradiation device 100 is not fixed so as not to be movable in the target region S, but the ultraviolet light emitting means 101, the cover means 103, and the blocking means 105 are unitized and integrally (independently) movable. To. The ultraviolet irradiation device 100 is configured to be able to switch between a blocking state and a non-blocking state of ultraviolet rays by physically moving the blocking means 105 and / or selecting the blocking means 105 by controlling the material. Material control here refers to physical control and / or chemical control.

The ultraviolet irradiation device 100 has a leg portion 123 as an example, and exhibits a stand-alone (partition, partition) type that can stand alone and move to an arbitrary position. The ultraviolet irradiation device 100 is not limited to the striking type, and may be, for example, a hanging type or a leaning type on a wall surface or the like. Further, the ultraviolet irradiation device 100 is not limited to the portable type, and may have a configuration (installation type) of being mounted and fixed in the target area S (for example, a wall surface or the like).

The blocking means 105 of this example is configured to be movable relative to the ultraviolet light emitting means 101, for example. Specifically, as shown in FIGS. 2 (A) and 2 (D), at least a part of the ultraviolet light can be moved so as to face the ultraviolet light emitting means 101, and the ultraviolet rays (shown by a broken line in the same figure for convenience). ) Can be blocked (this state is called "blocked state"). Further, as shown in FIGS. 2B and 2C, the blocking means 105 can be moved to a state of retracting from the front of the ultraviolet light emitting means 101, and the blocking means 105 is said to be movable without blocking at least a part of the ultraviolet rays. The target area S is configured to be able to irradiate ultraviolet rays (this state is referred to as a "non-blocking state"), and in the non-blocking state of ultraviolet rays, the space, equipment, etc. in the target area S are sterilized.

Further, the cover means 103 can be arranged to face the ultraviolet light emitting means 101 and form an air flow path 107 (see FIG. 2D) with the ultraviolet light emitting means 101. That is, in the ultraviolet irradiation device 100 of this example, the ultraviolet light emitting means 101 and the cover means 103 are unitized and integrally movable.

Here, as the definition of the direction in the present embodiment, the first direction H is the horizontal direction, the second direction V is the vertical direction, and the third direction D is the horizontal direction and the direction perpendicular to the vertical direction. For example, when the partition means 150 is erected in the vertical direction with respect to the floor (ground) so as to form a wall surface, the first direction H is the width direction of the wall surface, and the second direction V is the height of the wall surface. It is a vertical direction, and the third direction D is a direction parallel to the floor surface.

In the description of this embodiment, the "bacteria" to be sterilized is a general term for bacteria (bacteria, microorganisms, virus cells) that are mainly harmful to the human body (animal), and "sterilization" by ultraviolet rays is light energy. By acting on the deoxyribonucleic acid (hereinafter referred to as "DNA") itself of the bacterium, it is defined as an inactivated state in which the bacterium does not grow any further, and is defined as a sterilization treatment of less than ^10-6. ..

The ultraviolet light emitting means 101 is a means capable of outputting ultraviolet rays (UV: ultraviolet) having a predetermined main wavelength. More specifically, it is possible to output light with a short wavelength (near ultraviolet light) in ultraviolet light (ultraviolet light), especially light with a wavelength in the UVC region, and this light energy directly destroys the deoxyribonucleic acid (DNA) of bacteria (bacteria). It has a UV light source that has the ability to inactivate bacteria by doing so.

The ultraviolet light emitting means 101 of the present embodiment has, for example, a third direction D (in which the UV light source is at least substantially perpendicular to the surface of the base material B on the surface of the surface of the surface base material B such as a wall surface, a panel material, or a plate material). A plurality of ultraviolet rays are provided so as to be able to output (exit) ultraviolet light in the direction of the broken line in the figure), and each of them is arranged at a predetermined interval.

The UV light source is, for example, a straight tube type low-pressure mercury lamp (low-pressure UV lamp) LP, and a discharge lamp (metal) that utilizes the light emission of arc discharge in mercury vapor whose internal pressure (mercury vapor pressure) during lighting is 100 Pa or less. Steam discharge lamp). The main wavelength of the light output by the low-pressure mercury lamp (low-pressure UV lamp) LP is, for example, 250 nm to 260 nm, preferably 253 nm to 255 nm, and more preferably 253.5 nm to 254 nm (for example, 253. 7 nm).

Further, the low-pressure mercury lamp LP is provided with an inhibitory means (not shown) that inhibits the production of ozone at least in front of the emission direction of ultraviolet rays. The inhibiting means is, for example, a lamp bulb of a low-pressure mercury lamp LP made of ozoneless quartz glass that blocks light having a wavelength of 200 nm or less (a part thereof, an optical component). Of the ultraviolet rays, far ultraviolet rays having a wavelength of 184.9 nm cause a reaction between oxygen in the air and generate ozone. The low-pressure mercury lamp LP of the present embodiment cuts light (light component) having a wavelength of 184.9 nm, which produces ozone, among the ultraviolet rays emitted by transmitting the blocking means (a lamp valve made of quartz glass).

Further, a condensing means (not shown) for condensing the irradiation direction of ultraviolet rays in a predetermined direction may be provided around or in the vicinity of the low-pressure mercury lamp LP. The light collecting means is a member having a light focusing (focusing) function, such as a reflector, a screen, or a lens.

The ultraviolet light emitting means 101 of the present embodiment is light in the UVC region whose output wavelength is a short wavelength of ultraviolet light, and inactivates bacteria by directly destroying the DNA of the bacteria by the light energy. Any UV light source having the ability to emit light may be used, and for example, instead of the low-pressure mercury lamp LP, a UV lamp of an LED (light emerging diode) may be used.

A typical light source that can output ultraviolet rays other than mercury lamps is a UV-LED that can obtain light in the ultraviolet region without mercury. Among these UV-LEDs, the UV-LED light source, which has a emission line from the UVC region to the UVB region, particularly 260 nm to 285 nm and can output light of a single wavelength, has good luminous efficiency and is difficult to reduce the illuminance, and has a long life. It is designed and matches the output of light having a wavelength in the UVC region, which is the sterilization wavelength region. That is, since a high bactericidal effect can be obtained even with a UV-LED light source, as an embodiment of the present invention, a UV-LED may be used instead of the low-pressure mercury lamp LP as a light source for outputting light having a wavelength in the sterilization wavelength region. good. In the case of UV-LEDs, the individual UV-LEDs may be arranged linearly so as to be a linear light source, or the individual UV-LEDs may be arranged in a matrix so as to be a surface light source. Good.

It is desirable that the ultraviolet light emitting means 101 in this example secures a sufficient area so that the area of irradiation of the target area S with ultraviolet rays is as large as possible. For example, the second direction (height direction) V is the partitioning means. It is desirable that the height is close to 150. In the first direction (width direction) H, for example, one ultraviolet light emitting means 101 may have a large length in the width direction, or a plurality of ultraviolet light emitting means 101 (ultraviolet irradiation device 100). May be arranged in the width direction. Further, it is desirable that the UV lamp LPs such as the low-pressure mercury lamp and the UV-LED are arranged evenly (as uniformly and evenly as possible) on the base material B.

The blocking means 105 is a means for blocking at least a part of the ultraviolet rays output by the ultraviolet light emitting means 101 that are harmful to the human body, and at least a part of the blocking means 105 can be arranged to face the ultraviolet emitting means 101. Specifically, the blocking means 105 of the present embodiment blocks at least ultraviolet rays in the sterilization wavelength region (UVC region), and more specifically, for example, UVC region and UVB region (wavelengths other than the allowable reference value for the human body). Blocks ultraviolet rays in the region) (hereinafter, the same applies to all the blocking means 105 including the blocking means 105 described simply as "blocking the ultraviolet rays (of the wavelength) in the UVC region" in the present embodiment).

As an example, the cover means 103 is a transparent member (glass, resin, etc.) capable of transmitting light (ultraviolet rays) having a wavelength of at least the sterilization wavelength region (UVC region), as shown in FIG. 2 (A). Further, the cover means 103 of this example is provided so as to superimpose the blocking means 105 for blocking ultraviolet rays in the sterilization wavelength region (UVC region). The blocking means 105 in this case is, for example, a plate-shaped panel or filter that cuts light (ultraviolet rays) having a wavelength in at least the UVC region.

Further, the blocking means 105 of the present embodiment may be included in the covering means 103, for example, being integrally configured with the covering means 103. In this case, the cover means 103 is, for example, a transparent member (for example, UV cut glass) such as glass containing a UV cut material (blocking means 105) that blocks ultraviolet rays in the sterilization wavelength region (UVC region), or a UV cut film. It is a transparent member that has been pasted.

The ultraviolet light emitting means 101 of the ultraviolet irradiation device 100 of the present embodiment continuously irradiates ultraviolet rays forward (in the direction of ultraviolet emission) during normal operation (during operation, after the power is turned on). Then, the blocking means 105 emits light having a wavelength in the sterilization wavelength region (UVC region) in front of the covering means 103 (in the ultraviolet emitting direction) among the ultraviolet rays emitted (output) by the ultraviolet emitting means 101. It is configured to be able to switch between a blocking state for blocking and a non-blocking state for emitting light in front of the cover means 103.

The switching between the blocking state and the non-blocking state of ultraviolet rays has a wavelength in the UVC region by moving the blocking means 105 relative to the ultraviolet emitting means 101 (for example, the physical relative movement of the blocking means 105). Switch between UV blocking and non-blocking states. Hereinafter, the "ultraviolet rays blocked (cut) by the blocking means 105 (covering means 103)" are at least ultraviolet rays having a wavelength in the sterilization wavelength region (UVC region), more specifically, a wavelength in the UVC region and a wavelength in the UVB region. Of these, it shall mean ultraviolet rays with wavelengths that are harmful to the human body.

Specifically, when the cover means 103 transmits ultraviolet rays having a wavelength in the UVC region and is provided with a blocking means (such as a UV cut film) 105 that blocks ultraviolet rays having a wavelength in the UVC region, the blocking state is provided. Then, as shown in FIG. 6A, the cover means 103 and the blocking means 105 are arranged in front of the ultraviolet light emitting means 101 (in the direction of emitting ultraviolet rays), and the ultraviolet rays pass through the cover means 103 and are in front (target area). Blocks the irradiation of S).

On the other hand, in the non-blocking state, as shown in FIG. 3B, at least the blocking means 105 is moved relative to the ultraviolet emitting means 101 so as to retract from the front of the ultraviolet emitting means 101, and the ultraviolet rays (cover). It is allowed to be directly irradiated in front of the cover means 103 (target area S) (through the means 103).

Further, when the cover means 103 is a UV cut glass or the like that cuts ultraviolet rays having a wavelength in the UVC region (including the blocking means 105), in the blocking state, as shown in FIG. ) Is arranged in front of the ultraviolet light emitting means 101 (in the direction of emitting ultraviolet rays) to block ultraviolet rays from passing through the cover means 103 and being irradiated to the front (target region S).

On the other hand, in the non-blocking state, as shown in FIG. 3C, at least a part of the cover means 103 is moved relative to the ultraviolet light emitting means 101 so as to be retracted from the front of the ultraviolet light emitting means 101, and the ultraviolet rays are emitted. Allows the target area S to be irradiated with.

As described above, the ultraviolet irradiation device 100 of the present embodiment is configured so that the blocking means 105 can switch between the blocking state and the non-blocking state while the ultraviolet light emitting means 101 outputs the ultraviolet rays. With such a configuration, the target area S can be sterilized efficiently in a short time.

The UV lamp LP switches between operation and non-operation of the sterilization process depending on whether it is on (lit) or off (off). However, it takes a predetermined time from the state in which the UV lamp LP is off (turned off) to reach the output for obtaining a sufficient sterilizing ability, and this time becomes longer as the off state is longer.

Specifically, when the UV lamp LP is a low-pressure mercury lamp, it depends on the lighting (temperature) environment in which the UV lamp LP is used, but as an example, dozens of UV lamp LPs have been turned off (turned off) last time. If about a minute has passed, it takes about 1 minute to reach the output (peak output) where sufficient sterilization ability can be obtained after the UV lamp LP is turned on (lit), and the previous UV lamp LP is turned off (turned off). If about 24 hours have passed since the UV lamp was turned on, it takes about 2 to 3 minutes to reach the output (peak output) at which sufficient sterilization ability can be obtained after the UV lamp LP is turned on (lights up). When the LP is completely cooled (for example, when several hours to 24 hours or more have passed since the last time the UV lamp LP was turned off (turned off)), after the UV lamp LP is turned on (lit). It takes about 5 minutes to reach the output (peak output) at which sufficient sterilizing ability can be obtained.

Further, when the UV lamp LP is a low-pressure mercury lamp in particular, its luminous efficiency depends on the vapor pressure of mercury (evaporation temperature 48 ° C.) enclosed inside, so that the vapor pressure is not stable or in a high temperature environment. In such cases, there is a problem that the output characteristics are not stable, such as variations in the time required to reach a predetermined output.

That is, if the ultraviolet light emitting means 101 is turned off (turned off) during the period when the sterilization treatment is not performed, it may take time to reach a predetermined output or the time may vary when the sterilization treatment is desired. become. Specifically, for example, in a hospital or the like, when a patient infected with a (strongly infectious) virus is examined and treated in the target area S and then another patient uses the same target area S, the other patient. In order to prevent secondary infection to hospital staff such as doctors and doctors, it is desirable to sterilize the target area S (space) every time the patient's treatment is completed. However, if it takes a long time to start sterilization with an ultraviolet light source lamp (the time is not stable), there is a problem that the waiting time until the next patient enters the room becomes long.

Therefore, in the present embodiment, the ultraviolet light emitting means 101 is started to emit light in advance (for example, before the start of use of the target area S) before the target area S is sterilized (FIG. 2 (A)) and sterilized. When treatment is not necessary (when sterilization cannot be performed, such as when manned), ultraviolet rays harmful to the human body are blocked by the blocking means 105 (FIG. 2 (A)). Then, when sterilization treatment is required (unmanned), the blocking means 105 (covering means 103) is opened, and the ultraviolet light emitting means 101 is retracted from the front to instantly switch from the blocking state to the non-blocking state (FIG. B), Fig. (C)). In this case, a sufficient time has passed since the ultraviolet light emitting means 101 was turned on (lit), and a sufficient output for the sterilization process was obtained. Further, in the ultraviolet light emitting means 101, the UV lamp LP is (evenly) arranged in a large area such as the same as the wall surface. Therefore, as soon as the blocking means 105 (covering means 103) is opened, the entire target region S can be directly irradiated with ultraviolet rays.

If the UV lamp is a UV-LED, the output can be reached to 100% immediately when the lamp is lit, so it is possible to control immediate lighting and immediate extinguishing, which is different from the low mercury lamp.

Here, it is preferable that at least a part of the cover means 103 is arranged to face the ultraviolet light emitting means 101, and preferably at least a part of the cover means 103 has an opening. For example, as shown in FIG. 2D, at least a part of the cover means 103 is arranged to face the ultraviolet light emitting means 101, and an air flow path 107 can be formed between the cover means 103 and the ultraviolet light emitting means 101. That is, the cover means 103 has openings at one end and the other end (in this example, the upper end and the lower end of the second direction (height (vertical) direction) V) to be open ends, whereby the height direction V The air flow path 107 is formed in the air.

For example, the cover means 103 has a front cover portion 103F and a side cover portion 103S continuous thereto so as to have a U shape in a top view as shown in FIG. More specifically, the ultraviolet light emitting means 101 is arranged in a substantially vertical surface (for example, a surface substantially perpendicular to the floor surface) in the target area S, and the front cover portion 103F is the ultraviolet light emitting means 101 and the first. They are separated by a predetermined distance D1 in the three directions D, and are arranged to face each other in a substantially vertical plane different from this. The distance D1 between the ultraviolet light emitting means 101 and the front cover portion 103F is such that natural convection of air generated by the heat generated by the ultraviolet light emitting means 101 is possible (necessary and sufficient), and is about 100 mm to 200 mm as an example.

The side cover portion 103S is continuously provided at both ends of the front cover portion 103F in the first direction (width direction) H so as to integrally cover the ultraviolet light emitting means 101 with the front cover portion 103F.

That is, the cover means 103 (front cover portion 103F and side cover portion 103S) forms a substantially rectangular parallelepiped shape together with the ultraviolet light emitting means 101, and the upper end portion and the lower end portion thereof are open, so that the ultraviolet light emitting means 101 and the cover means 103 In the region partitioned by the above (the region between the cover means 103 and the ultraviolet light emitting means 101), a flow path 107 through which air can flow is formed. Then, the ultraviolet irradiation device 100 continuously emits ultraviolet rays from the ultraviolet light emitting means 101 during operation (during operation).

As shown in FIG. 2D, the air in the flow path 107 is heated by the light emitted from the ultraviolet light emitting means 101 and rises. The distance D1 between the ultraviolet light emitting means 101 and the front cover portion 103F is such that natural convection of air generated by the heat generated by the ultraviolet light emitting means 101 is possible (a degree that does not hinder natural convection and a degree necessary and sufficient for natural convection).

That is, in a state where the flow path 107 partitioned by the cover means 103 and the ultraviolet light emitting means 101 is formed (the state in which the ultraviolet light emitting means 101 is covered by the cover means 103), ultraviolet rays are emitted into the air flowing in from the lower end side thereof. Is irradiated and can flow out from the upper end side of the flow path 107, and due to natural convection, indoor (contaminated) air enters the flow path 107 from the lower end of the flow path 107 and is sterilized by the ultraviolet light emitting means 101. The generated air flows out from the upper end of the flow path 107 to the target region S.

In this way, the ultraviolet irradiation device 100 takes in the air in the target region S, irradiates it with ultraviolet rays, sterilizes it, and discharges it without using a separate driving means for artificial and mechanical air circulation. , Clean air after sterilization can be circulated in the target area S. Hereinafter, the process of circulating clean air by sterilizing the air taken in by the ultraviolet irradiation device 100 and releasing it by natural convection is referred to as "circulation sterilization (treatment)".

If the cover means 103 is configured to constantly cover the ultraviolet light emitting means 101 and the blocking state and the non-blocking state are switched by opening and closing the blocking means 105, the UV emitting state can be in the non-blocking state. Can also be circulated and sterilized.

On the other hand, in the case of a configuration in which the ultraviolet ray blocking state and the non-blocking state are switched by opening and closing the cover means 103 including the blocking means 105, circulation sterilization can be performed in the blocking state.

<Operation example of UV irradiation device and UV irradiation system>
A specific operation example of the ultraviolet irradiation device 100 and the ultraviolet irradiation system 200 will be further described with reference to FIGS. 2 and 3. As an example, the blocking means 105 is opened so as to cover the front surface of the ultraviolet light emitting means 101 along the surface direction of the front cover portion 103F (FIGS. 2 (A), 2 (D), 3 (A)). It is assumed that the state (FIG. 2 (B), FIG. 2 (C), FIG. 3 (B), FIG. 3 (C)) can be moved (opened and closed).

The ultraviolet irradiation device 100 is driven by the drive control means 109 as an example. The drive control means 109 is, for example, a drive power supply and a control unit, and controls the irradiation / non-irradiation of ultraviolet rays by the ultraviolet light emitting means 101, and the ultraviolet ray blocking state and the non-blocking state by the blocking means 105 (covering means 103). Controls switching, etc. Further, the drive control means 109 also includes an operation control breaker, a lighting control timer, a sensor related to drive control, a signal processing means from the sensor, and the like.

The drive power supply is connected to the power supply of the target area S, etc., and a plurality of low-voltage mercury lamp LPs are synchronized, or each of them is efficiently turned on / off individually. Further, the control unit includes a control circuit composed of a CPU, RAM, ROM, and the like, and executes various controls. The CPU is a so-called central processing unit, and various programs including a control program for turning on / off the low-pressure mercury lamp LP are executed to realize various functions. The RAM is used as a work area of the CPU. The ROM stores the basic OS and programs executed by the CPU.

In addition to being driven by the drive control means 109, the ultraviolet light emitting means 101 manually controls the irradiation / non-irradiation of ultraviolet rays, and the blocking means 105 (covering means 103) controls switching between the blocking state and the non-blocking state of ultraviolet rays. Etc. can also be performed. Further, at least a part of the drive by the drive control means 109 (for example, control of ultraviolet irradiation / non-irradiation by the ultraviolet light emitting means 101, and switching between the ultraviolet blocking state and the non-blocking state by the blocking means 105 (covering means 103)). At least a part of control etc.) may be performed manually.

When the blocking means 105 is moved (closed) so as to cover the ultraviolet light emitting means 101 as shown in FIGS. 2 (A), 2 (D), and 3 (A), the ultraviolet rays output from the ultraviolet light emitting means 101 ( Ultraviolet rays in the sterilization wavelength region (UVC region) (indicated by a broken line) do not pass through the cover means 103 (front cover portion 103F), and are in a blocking state in which they do not progress (reach) to the front (target region S).

On the other hand, as shown in FIGS. 2 (B), 3 (C), 3 (B) or 3 (C), the blocking means 105 is moved (opened) so that the ultraviolet light emitting means 101 appears (or is exposed). ), The ultraviolet rays (ultraviolet rays in the sterilization wavelength region (UVC region)) output from the ultraviolet light emitting means 101 (transmitted through the cover means 103 (front cover portion 103F)) are in front of the front cover portion 103F (target region S). ) Will be in a non-blocking state.

Here, in the configurations shown in FIGS. 2 (B) and 3 (B), it is assumed that the cover means 103 is fixed to the ultraviolet light emitting means 101 (it does not move relatively) and can transmit ultraviolet rays. The blocking means 105 is configured to be movable relative to not only the ultraviolet light emitting means 101 but also the covering means 103, so that the blocking state and the non-blocking state can be switched.

On the other hand, in FIGS. 2C and 3C, the front cover portion 103F and the blocking means 105 are integrally provided, and the front cover portion 103F itself also serves as the blocking means 105. Specifically, for example, a panel-shaped blocking means 105 may be integrally provided so as to be superimposed on at least the front cover portion 103F of the cover means 103, or at least the inside of the front cover portion 103F of the cover means 103. For example, a panel-shaped blocking means 105 may be provided (built-in). Alternatively, the material of the front cover portion 103F may contain (mix) or apply a blocking means 105 such as an ultraviolet ray blocking material. In this case, the front cover portion 103F (blocking means 105) is configured to be movable (open / close) between a state of covering the front surface of the ultraviolet light emitting means 101 and a state of opening.

In the configurations shown in FIGS. 2 (C) and 3 (C), when the front cover portion 103F (blocking means 105) is moved (opened) so that the ultraviolet light emitting means 101 appears (or is exposed), the ultraviolet light emitting means 101 The ultraviolet rays output from the above are in a non-blocking state in which they travel (reach) forward (target area S). On the other hand, when the front cover portion 103F (blocking means 105) is moved (closed) so as to cover the ultraviolet light emitting means 101 as shown in FIGS. 2 (A) and 3 (A), the output is output from the ultraviolet light emitting means 101. Ultraviolet rays do not pass through the front cover portion 103F and do not travel (reach) to the front (target area S), resulting in a blocking state.

Irradiation of ultraviolet rays (wavelengths in the UVC region) that can be sterilized is generally harmful to the human body. In the ultraviolet irradiation device 100 of the present embodiment, when the target area S is manned, the ultraviolet rays are blocked by the blocking means 105, and harmful ultraviolet rays proceed (reach) to the target area S (manned area). To prevent.

On the other hand, when the target area S is unmanned, the blocking means 105 is opened, the target area S is irradiated with ultraviolet rays in a non-blocking state, and the entire target area S is sterilized. In this sterilization treatment, not only objects such as furniture, walls, floors and ceilings existing in the target area S, but also the air in the target area S can be sterilized.

Further, when the flow path 107 is formed by the cover means 103 and the ultraviolet light emitting means 101, the air in the flow path 107 is sterilized and the clean air (sterilized air) is circulated by natural convection (circulation sterilization). Is possible.

That is, as shown in FIGS. 2 (A), 2 (B), 3 (D), 3 (A), and 3 (B), at least the front cover portion 103F (which can transmit ultraviolet rays) is In the configuration that always covers the ultraviolet light emitting means 101, since the flow path 107 is formed even in the non-blocking state in which the target area S is unmanned and the blocking means 105 is opened, the target area S is directly irradiated with ultraviolet rays. As a result, the air in the target region S can be sterilized, and at the same time, the air in the flow path 107 can be sterilized and clean air can be circulated in the target region S. When the blocking means 105 is closed when the target region S is manned or the like, the target region S is blocked from being irradiated with ultraviolet rays, but the air in the flow path 107 is sterilized and the target region S is sterilized. Clean air can be circulated in S.

On the other hand, as shown in FIGS. 2C and 3C, in the configuration in which the cover means 103 also serves as the blocking means 105, the flow path is in the non-blocking state in which the target area S is unmanned and the blocking means 105 is opened. Although 107 is not formed, the air in the target region S can be sterilized by directly irradiating the target region S with ultraviolet rays. When the blocking means 105 (front cover portion 103F) is closed when the target region S is manned, the irradiation of ultraviolet rays to the target region S is blocked, but the air in the flow path 107 is blocked. Can be sterilized and clean air can be circulated in the target area S.

As described above, in the ultraviolet irradiation system 200 of the present embodiment, the target area S can be appropriately partitioned by the partitioning means 150, and the portable ultraviolet irradiation device 100 can be arranged (carried in) in the target area S. That is, even in the target area S where the sterilization device or the like is not provided, the ultraviolet irradiation device 100 can be arranged as needed and can be moved as appropriate, and the layout can be easily changed.

Then, when the target area S is unmanned due to the opening of the blocking means 105, the ultraviolet rays from the ultraviolet light emitting means 101 to the target area S are instantly unblocked, and the target area S is directly irradiated with the ultraviolet rays over a wide range ( Further, the inside of the target region S can be efficiently sterilized (by circulating the sterilized air through the flow path 107).

When the target area S is manned, the blocking means 105 is closed to block the ultraviolet rays from the ultraviolet light emitting means 101 to the target area S (while maintaining the light emission), while avoiding the influence of the ultraviolet rays on the human body. Also, the sterilized air can be circulated through the flow path 107 to safely sterilize the inside of the target region S. That is, even in the state where ultraviolet rays are blocked, the air sucked into the flow path 107 is sterilized by the ultraviolet light emitting means 101, the temperature rises due to heat generation, and the air flows out from the upper part by natural convection to circulate clean air. (Circulation sterilization is possible). In addition, since no mechanical or artificial air circulation means is used, the air is continuously sterilized without disturbing the air flow even during use (working) in the target area S (indoors, etc.). The number of bacteria in the target area S can be reduced.

The portable type is not limited to the illustrated configuration, and may be, for example, a stationary type on the floor or the like, or a hanging type from the ceiling or a wall.

FIG. 4 is a block diagram showing an example of a circuit included in the drive control means 109 of the ultraviolet irradiation device 100 according to the embodiment of the present invention. In this example, the case where six UV lamps (for example, low-pressure mercury lamps) LP1 to LP6 are made to emit light is illustrated as an example, but the number is not limited to this.

The ultraviolet irradiation device 100 is provided with an AC power plug capable of supplying electricity from a power source in the target area S (for example, a household or commercial power source), and has a circuit configuration capable of supplying power to the regulated power supply unit 210. There is. The stabilized power supply unit 210 includes ballasts EB1 to EB6 capable of constantly and stably lighting the UV lamps LP1 to LP6, and UV lamps LP1 to LP6 are connected to the ballasts EB1 to EB6, respectively. Further, the wiring is arranged by the most suitable cable connectors for the UV lamps LP1 to LP6, and the circuit configuration is such that the power supply can be efficiently supplied to the ballasts EB1 to EB6.

Further, the drive control means 109 may be able to individually control the lighting / extinguishing of a plurality of UV lamps LP (for each lamp). Thereby, the plurality of UV lamps LP can be turned on, blinked, and turned off by an arbitrarily set method, for example, the plurality of UV lamps LP are turned on sequentially, rotated in a circle, or individually randomly turned on. By doing so, it is possible to irradiate the target region S with no shadow (non-irradiated portion) evenly when irradiating with ultraviolet rays (it is possible to minimize the shadow blocking the ultraviolet rays).

<Bacterial inactivation treatment by UV irradiation>
Here, inactivation of bacteria by ultraviolet irradiation will be described with reference to FIGS. 5 and 6.

Of the light radiation, the radiation of light with a wavelength shorter than 380 nm is regarded as ultraviolet radiation, and it is known that it exerts various actions on substances and living things. The characteristic of light is that the shorter the wavelength, the stronger the light energy (kJ / mol), and especially in the UVC region (100 nm to 280 nm) of ultraviolet rays, it becomes possible to decompose nucleic acid molecules and proteins of living organisms.

On the other hand, it is said that a single bond between carbons does not absorb light having a wavelength longer than 230 nm and a chemical change cannot be obtained, and a change in nucleic acid requires absorption of photons into a double bond contained in the nucleic acid. The principle of microbial inactivation is that light energy peaked at a wavelength of 260 nm is absorbed by DNA and ribonucleic acid (hereinafter "RNA") bases that control genetic information in the cell nucleus of living organisms. This occurs when thymine and the like dimerize and cannot replicate further during cell division.

For this reason, ultraviolet (UV) lamps that can output light in the ultraviolet short wavelength UVC region are used for sterilization (inactivation of bacterial and viral cells) to improve hygiene management mainly in food and medical industry applications. ) As a light source that can efficiently perform), food, packaging, film, water treatment and space adhering bacteria (bacteria adhering to walls, floors, doors, installation equipment, etc.), floating bacteria (falling with bacteria floating in space) It is widely used in fields such as sterilization of bacteria (including falling bacteria) inside.

The ultraviolet light emitting means 101 of the present embodiment uses a mercury lamp (low pressure mercury lamp LP) containing mercury in a discharge tube as an example of an ultraviolet lamp capable of outputting light in the UVC region.

FIG. 5 is a diagram showing a state of DNA inactivation by ultraviolet rays, and FIG. 5 (A) is a diagram in which an ultraviolet (UV) absorption curve of DNA is superimposed on an output wavelength (spectral spectrum) distribution of a low-pressure mercury lamp LP. is there. The UV absorption curve is a relative value of the UV absorption rate of DNA according to the UV wavelength when the absorption rate (spectral sensitivity) of DNA at a UV wavelength of 260 nm is 100, and the vertical axis of FIG. It is a relative value of the rate, and the horizontal axis is the UV wavelength. Further, FIG. 3B is a UV absorption curve (solid line) of DNA and a bactericidal action curve (broken line) by UV. The bactericidal action curve is a relative value of the sterilization rate of DNA according to the UV wavelength when the sterilization (inactivation) rate of DNA at a UV wavelength of 260 nm is 100, and the vertical axis of FIG. It is a relative value, and the horizontal axis is the UV wavelength [nm].

As shown in FIG. 3A, the low-pressure mercury lamp LP can obtain light having a emission line of 253.7 nm emitted when an electron is collided with mercury in a discharge tube as a main wavelength. Then, it spans a wavelength region centered on a spectrum of 260 nm, which is absorbed by biological DNA (as well as RNA). Further, as already described, the bactericidal action by ultraviolet radiation is caused by damaging the DNA, but as shown in FIG. 3B, the bactericidal action curve showing the bactericidal action is the UV absorption curve of DNA. Almost match. This is because the pyrimidine groups that are continuous in the DNA are dimerized by absorbing light in this wavelength region, the genetic code is impaired, and the cells lose their differentiation performance and are inactivated.

That is, advanced disinfection (cell inactivation) treatment can be performed by efficiently irradiating the target bacteria with light having a wavelength of 253.7 nm output from the low-pressure mercury lamp LP.

Fluorescent lamps use this 253.7 nm wavelength light by applying it to a phosphor coated on the inner wall of the arc tube glass to convert it into visible light and use it as illumination, but in the case of germicidal lamps, it has a short wavelength of ultraviolet rays. UV-transmissive glass capable of efficiently transmitting light and quartz glass having higher transparency are used. There is a high-pressure mercury lamp (sometimes called a medium-pressure mercury lamp for industrial use) that is mainly used as a street lamp because it has high brightness in the same type of mercury lamp, but at the same time it emits a lot of heat rays. Therefore, in the present embodiment, a low-pressure mercury lamp LP capable of suppressing heat rays and efficiently obtaining light having a wavelength of 253.7 nm is adopted as the light source of the ultraviolet light emitting means 101.

In addition, UV light with a wavelength of 184.9 nm causes a reaction between oxygen to generate ozone, which may cause deterioration of members and adverse effects on the human body. Therefore, in order to inhibit the generation of ozone due to the ultraviolet rays irradiated into the air from the low-pressure mercury lamp LP, the low-pressure mercury lamp LP of the present embodiment cuts light (light component) having a wavelength of 184.9 nm. Provide a means of inhibiting that can be achieved. Specifically, the inhibiting means is a quartz glass lamp bulb.

The sterilization (inactivation) treatment of bacteria by UV has the disadvantage that it cannot be treated unless it is exposed to a specified amount of light, but on the other hand, it does not generate resistant bacteria that are problematic in sterilization treatment methods such as chemicals and heat. It has the advantage of being able to effectively treat bacteria.

In the figure (A), the low-pressure mercury lamp LP also outputs a small amount of light (light component) having a wavelength of 310 nm or more, but the absorption rate of DNA of any wavelength of light is about 5% or less. Therefore, it can be almost ignored from the viewpoint of bactericidal action.

Here, the UV irradiation amount required for inactivating the bacteria (bactericidal action by ultraviolet rays) is the integrated light amount (integrated irradiation amount, exposure amount) of the light in the sterilization wavelength band given to the DNA of the bacteria (cells) [J / cm. ² ] (Determined by the following (Equation 1).

Integrated light intensity [J / cm ² ] = UV illuminance [W / cm ² ] x irradiation time [sec] (Equation 1)

UV radiation intensity (UV intensity) is expressed as UV illuminance per fixed area. Although W / m ² is used as the unit, mW / cm ² or μW / cm ² is practically used because the unit becomes large. The value obtained by multiplying the radiation intensity (UV illuminance) of this UV by the irradiation time (for example, several seconds) is the integrated light amount (exposure amount) [J / cm ² (mJ / cm ^2, μJ / cm ² )].

The sterilization treatment with ultraviolet rays is effective against all bacteria, but since the resistance (susceptibility) of ultraviolet rays differs depending on the bacterial species, the required amount of ultraviolet irradiation is determined for each sterilization target bacterium based on the sterilization treatment index. ..

FIG. 6 is a table showing an example of the integrated light amount required to inactivate 99.9% or more when irradiated with UV of 267 nm to 287 nm for each type of bacteria (Source: International Illuminating Engineering Institute of Lighting (IES) Writing Handbook). Is.

With reference to the figure, for example, the cumulative amount of light (cumulative ultraviolet irradiation amount) required to sterilize influenza virus by 99.9% or more is 10500 [μJ / cm ² ], which is a food sterilization standard index of Bacillus subtilis. The cumulative amount of light required to sterilize the mycelial spores by 99.9% or more is 33200 [μJ / cm ² ]. That is, based on these index values, the integrated light amount of the low-pressure mercury lamp LP is set according to the bacteria to be sterilized.

In the present embodiment, in the non-blocking state, ultraviolet rays in the sterilization wavelength region are directly irradiated from the ultraviolet light emitting means 101 to the airborne bacteria and adherent bacteria in the target region S (via the cover means 103), and therefore in the target region S. Can be efficiently sterilized and purified.

<How to switch the blocking means>
Next, a method of switching the blocking means 105 will be described with reference to FIGS. 7 and 8. 7 and 8 are schematic views showing an example of a method of switching the blocking means 105, and are perspective views showing the ultraviolet light emitting means 101 and the blocking means 105 portion extracted. As already described, the blocking means 105 may be a separate body from the covering means 103, or may be integrated with the covering means 103. Further, the cover means 103 may not be provided, and the flow path 107 may not be formed.

As shown in FIG. 7, the ultraviolet irradiation device 100 of the present embodiment moves (retracts) the blocking means 105 relative to the ultraviolet emitting means 101, and is in a state of blocking ultraviolet rays (FIG. 7A). , The non-blocking state ((B) in the figure) can be switched. The blocking means 105 is a means for cutting ultraviolet light (light having a wavelength in at least the UVC region) and transmitting visible light. In this example, the case where the blocking means 105 is formed in the form of one panel is shown.

That is, as shown in FIG. 3A, when the blocking means 105 is closed to cover the front surface of the ultraviolet light emitting means 101, ultraviolet light (light having a wavelength in at least the UVC region) is blocked by the blocking means 105. However, other light (ultraviolet light having little influence on the human body (light having a wavelength other than the UVC region (a part of the UVB region)) is transmitted through the blocking means 105.

On the other hand, as shown in FIG. 3B, when the blocking means 105 is opened (retracted) so that the front surface of the ultraviolet light emitting means 101 is exposed (appearing), ultraviolet light (at least the wavelength in the UVC region) is exposed. Light) is emitted forward.

FIG. 8 is a perspective view showing another example of switching between the blocked state and the non-blocked state by the blocking means 105. The blocking means 105 is not limited to a single panel shape as shown in FIG. 6, and may be composed of a combination of parts 105P that are divided into a plurality of parts and can be individually moved. The part 105P is configured to be capable of parallel (slide) movement as shown in FIG. (B) and rotation (swing) as shown in FIG. 3C, for example, with respect to the ultraviolet light emitting means 101.

Specifically, as shown in FIG. 3B, the blocking means 105 is divided into a plurality of parts in the vertical direction (height direction) V, and the strip-shaped parts 105P in the vertical direction are horizontally (width direction) H. It can be slid to. In this case, in the blocked state shown in FIG. (A), the front surface of the ultraviolet light emitting means 101 is covered, and in the non-blocked state, as shown in FIG. It can be opened to the left and right. The parts 105P that slide to the left and right may be one each, but by dividing each of the left and right into a plurality of parts, the blocking means 105 can be compactly stacked even in the open state.

Further, as shown in FIG. 6C, the blocking means 105 is divided into a plurality of pieces in the horizontal direction (width direction) H, and the angle of the strip-shaped part (louver) 105P can be changed in the horizontal direction. The plurality of parts 105P can be rotated (swinged) in a blind shape (grating shape) around a rotation shaft RR provided along the width direction, for example. In this case, in the blocked state shown in FIG. (A), the front surface of the ultraviolet light emitting means 101 is covered, and in the non-blocked state, as shown in FIG. it can.

In the present embodiment, it is desirable to irradiate a wide area without blocking ultraviolet rays when the blocking means 105 is opened. In this case, in the case of a blind shape as shown in FIG. 3C, a part of the ultraviolet rays may be blocked by the part 105P, so it is desirable to have a configuration in which the front in the irradiation direction is fully opened as shown in FIG.

Not limited to this example, for example, the blocking means 105 may be divided in the vertical direction as shown in FIG. 3C, or may be divided in a matrix. Further, the blocking means 105 may be configured in a curtain shape so that it can be opened and closed.

The movement (opening / closing) of the blocking means 105 may be automatically controlled by, for example, a drive control means 109 (not shown), or may be manually controlled.

FIG. 9 is a diagram showing an example of an ultraviolet irradiation system 200 using an ultraviolet irradiation device 100. FIG. 9A is a schematic view of the ultraviolet irradiation system 200, and FIG. 9B is a top view showing the ultraviolet irradiation device 100.

As shown in FIG. 6A, for example, the ultraviolet irradiation system 200 can arrange the ultraviolet irradiation device 100 (100A) at an arbitrary place in the target area S, and here, it is arranged in the target area S. A plurality of beds BDs are arranged so as to partition each other. In this way, the ultraviolet irradiation device 100 can also be used as a partition. That is, when the target area S is partitioned by the partitioning means 150 and used for, for example, a temporary medical / nursing room, the air can be circulated and sterilized while protecting the privacy of the simultaneous residents of the target area S.

Further, in that case, the ultraviolet irradiation device 100 is moved near the place of concern where bacteria or viruses are generated in the room, and the blocking means 105 is opened to expose the ultraviolet emitting means 101 (in a non-blocking state). Therefore, the light from the UV lamp LP can be directly and evenly irradiated to the irradiated portion in an instant and wide range to perform the sterilization treatment.

With reference to FIG. 3B, in the ultraviolet irradiation device 100, for example, a support frame (frame body) 121 is provided on the outer periphery, and a base material B provided with the ultraviolet light emitting means 101 is fixed to the support frame 121. Specifically, the ultraviolet light emitting means 101 arranges low-pressure mercury lamps LP on both sides of the panel (plate) -shaped base material B, and blocks the blocking means 105 and the covering means 103 on both sides so as to cover the ultraviolet light emitting means 101, respectively. It is provided. That is, a plurality of UV lamp LPs are provided on the first surface Sf1 of the base material B, and the blocking means 105 and the covering means 103 are arranged so as to face and cover the first surface Sf1. Further, a plurality of low-pressure mercury lamps LPs are provided on the second surface Sf2 of the base material B, and the blocking means 105 and the covering means 103 are arranged so as to face and cover the second surface Sf2. With such a configuration, the ultraviolet irradiation device 100 can irradiate ultraviolet rays from both the first surface Sf1 side and the second surface Sf2 side.

Although not shown, the blocking means 105 is configured to be movable (open / close) relative to the ultraviolet light emitting means 101, for example, as shown in FIG. Since the ultraviolet light emitting means 101 is the same as the above example, the description thereof will be omitted, but the ultraviolet light emitting means 101 is constantly emitting light during normal operation, and the ultraviolet light is not blocked by opening and closing the blocking means 105. The cutoff state can be switched.

The UV lamp LP is not arranged on the first surface Sf1 and the second surface Sf2 of the base material B, respectively, but is shared by the frame-shaped base material B on the first surface Sf1 and the second surface Sf2. The structure may be such that the UV lamp LP is arranged. For example, in the case where a plurality of UV lamp LPs are hung on the frame-shaped base material B in a ladder shape, each UV lamp LP is shared by the first surface Sf1 and the second surface Sf2 of the base material B. Can be done.

The upper end and the lower end of the base material B are opened, and an air inlet IN and an air outlet OUT are arranged, respectively. An air flow path 107 is formed in a region partitioned by the cover means 103 and the base material B (ultraviolet light emitting means 101). In this example, the cover means 103 is configured to be immovable with respect to the ultraviolet light emitting means 101, and the air flow path 107 by the cover means 103 and the ultraviolet light emitting means 101 is always formed. That is, the air flow path 107 is always formed on both the first surface Sf1 side and the second surface Sf2 side of the base material B, regardless of whether it is in a blocked state or a non-blocked state.

In addition, a leg portion 123 is provided at the lower end portion. The leg portion 123 supports the ultraviolet irradiation device 100 on the floor surface or the like so as to be self-supporting, and prevents the flow path 107 (air inlet IN) on the lower end side from being blocked by the floor surface (flow path 107). It is provided to allow the inflow of air from the lower end side), and is not limited to the shape shown in the figure.

Further, it is preferable to provide casters 125 or the like on the legs 123 in order to facilitate movement. Further, the legs 123 or casters 125 may be provided with a lock mechanism (not shown) that can be fixed / movable.

In the ultraviolet irradiation device 100, the ultraviolet rays harmful to the human body are blocked by the blocking means 105 in the blocking state.

Further, during normal operation in which ultraviolet rays are emitted, indoor air is always taken into the flow path 107 from the air inlet IN at the lower end of the cover means 103 (whether in a blocked state or a non-blocked state). The air is sterilized by irradiating it with ultraviolet rays by the ultraviolet light emitting means 101. The air in the flow path 107 is heated by the heat of the ultraviolet light emitting means 101, which causes natural convection, and is returned to the room as sterilized air from the outlet OUT at the upper end of the cover means 103, and this is repeated. (Circulation sterilization).

Therefore, for example, even when the ultraviolet irradiation device 100 is arranged at a position away from the inside of the target area S (partitioning means 150), which also serves as a partition as shown in the figure, sterilization by ultraviolet irradiation and sterilization by ultraviolet irradiation can be performed efficiently. Air circulation sterilization can be performed.

The blocking means 105 is composed of a single plate-like body (film, curtain) or the like on each of the first surface Sf1 side and the second surface Sf2 side, and is removable from the cover means 103. You may.

Further, also in this example, the cover means 103 and the blocking means 105 may be integrally configured so that the cover means 103 can be moved (opened and closed) relative to the ultraviolet light emitting means 101. In that case, air circulation sterilization can be performed only in the blocked state, and in the non-blocked state, ultraviolet rays can be instantaneously and widely irradiated toward the target region S.

10 is a view showing a modified example of the ultraviolet irradiation device 100 shown in FIG. 9, where FIG. 10 (A) is a front view and FIG. 10 (B) is a top view. The ultraviolet irradiation device 100 of the present invention circulates clean air in the flow path 107 by utilizing natural convection of air. Therefore, as shown in FIG. 6A, the UV lamp LPs arranged linearly (or straight tube type) may be arranged so that the longitudinal direction faces substantially the vertical direction (height direction) V. This makes it possible to further promote the rise of air in the flow path 107. The arrangement of the UV lamp LP is not limited to the ultraviolet irradiation device 100 of this example, and can be applied to all the ultraviolet irradiation devices 100 described in the present embodiment.

With reference to FIG. 9 again, the ultraviolet irradiation device 100 further includes an engaging means 161 capable of engaging with other members. Here, the other member is a partitioning means 150 or another ultraviolet irradiation device 100. FIG. 9 illustrates a case where two ultraviolet irradiation devices 100 are engaged by the engaging means 161.

For example, the engaging means 161 is provided at both ends of the support frame 121 (or the base material B), and other members (partition means 150, another ultraviolet irradiation device 100, or other members) can be detachably engaged with each other. To do. The term "engagement" as used herein refers to any state in which the two parties can be detached (disengaged) and temporarily and integrally fastened, such as fixing, supporting, connecting, connecting, fixing, and hooking.

The engaging means 161 is composed of, for example, a magnet, and is connected to a metal portion of another member or an engaging means 161 (for example, a magnet) provided on the other member.

The engaging means 161 is not limited to a magnet, but is a means for engaging by a physical uneven shape or the like, a means for hooking a hook such as a string-like member on a fastener such as a hook, and the like for engaging. May be good.

Further, the engaging means 161 not only engages the two on the same surface, but also enables engagement in a bent state, for example, the two can be arranged in a substantially L shape in a top view. ..

Another example of the ultraviolet irradiation device 100 of the present embodiment will be described with reference to FIG. The figure is a perspective view which shows another example of an ultraviolet irradiation apparatus 100.

As shown in FIG. 11A, the ultraviolet irradiation device 100 (100A) covers both surfaces (first surface Sf1, second surface Sf2) of the base material B (frame body 121 in this case), respectively. 103 and a blocking means 105 separate from the 103 are provided. The cover means 103 is fixed to, for example, the base material B, and only the blocking means 105 is configured to be movable relative to the base material B (cover means 103).

As shown in FIG. 3B, the base material B (frame body 121) is hollow and has ultraviolet light emitting means 101 in which a plurality of UV lamp LPs are fixed. That is, the cover means 103 is fixed to both surfaces (first surface Sf1, second surface Sf2) of one (common) ultraviolet light emitting means 101, and the blocking means 105 is provided so as to cover the cover means 103. There is. The blocking means 105 is configured to be open to the base material B (covering means 103) or removable from the base material B, for example.

Air inlet IN and air outlet OUT are provided at the upper end and the lower end of the base material B (frame body 121), respectively, and are partitioned by the cover means 103 and the base material B (ultraviolet light emitting means 101) of the frame body. An air flow path 107 is formed in the region.

Further, the base material B is provided with an operation control breaker 109A, a lighting control timer 109B, and the like as a part of the drive control means 109.

As a result, in the blocked state ((A) in the figure), air is sucked in from the inlet IN, sterilized by irradiating with ultraviolet rays, and discharged from the outlet OUT. By repeating this, circulation sterilization can be performed. On the other hand, it blocks ultraviolet rays that are harmful to the human body. Further, in the non-blocking state (FIG. (B)), the target region S can be directly irradiated with ultraviolet rays by opening the blocking means 105 or separating and removing the blocking means 105 while performing circulation sterilization.

In this example as well, the engaging means 161 is provided on both sides of the base material B (frame body 121), and for example, the ultraviolet irradiation device 100 having the same shape can be connected in the width direction H. The blocking means 105 may be engaged with the engaging means 161 so that the blocking means 105 can be opened to the base material B (opening in a double door shape) with the engaging means 161 as an axis.

Further, for example, a take-in means (fan or the like) 170 for taking air into the flow path 107 may be provided at the lower end of the base material B as an auxiliary.

Further, also in this example, the cover means 103 and the blocking means 105 may be integrally provided (in that case, the cover means 103 is also configured to be openable (removable) with respect to the base material B).

12 and 13 are views showing another example of the ultraviolet irradiation system 200 of the present invention, and is an example in which the ultraviolet irradiation device 100 constitutes a part of the partition means 150. FIG. 12A is a top view of the ultraviolet irradiation system 200, and FIG. 12B is a perspective view of the ultraviolet irradiation system 200. 13 (A) to 13 (C) are side schematic views of the ultraviolet irradiation system 200, and FIG. 13 (D) is an upper surface.

The ultraviolet irradiation system 200 has a portable ultraviolet irradiation device 100 that irradiates the target area S partitioned by the partition means 150 with ultraviolet rays. As shown in the figure, in this example, the partition means 150 includes an ultraviolet irradiation device 100 (ultraviolet irradiation unit 150B) that is independently movablely unitized. That is, the partition means 150 is configured to include at least the ultraviolet irradiation unit 150B, and in this example, includes the partition unit 150A and the ultraviolet irradiation unit 150B.

The partition unit 150A simply has a function of a partition, and for example, the frame body is provided with the above-mentioned engaging means 161. The ultraviolet irradiation unit 150B has the same configuration as the above-mentioned ultraviolet irradiation device 100, but is configured to be engageable with the partition unit 150A by the engaging means 161. Further, the partition unit 150A and the ultraviolet irradiation unit 150B have, for example, the same size or the length (shape) in the width direction H and / or the height direction V as shown in FIGS. (A) and (B). It is preferable that it is composed of a uniform unified standard. Here, the ultraviolet irradiation device 100 which can be engaged with the partition unit 150A by the engaging means 161 and whose shape and size are configured in the same standard (unified size) as the partition unit 150A is particularly referred to as an ultraviolet irradiation unit 150B. However, each of the above-mentioned ultraviolet irradiation devices 100 and the ultraviolet irradiation unit 150B has the same configuration, and may be replaced for the sake of description in the present specification.

The partition unit 150A also has the same engaging means 161 as the ultraviolet irradiation unit 150B. The same members (partition means 150), that is, the partition units 150A and the ultraviolet irradiation units 150B can be engaged with each other by the engaging means 161. That is, the target area S is defined by continuously connecting (engaging) them. In other words, the partition unit 150A and the ultraviolet irradiation unit 150B function as a part of the partition means 150.

Further, the engaging position of the ultraviolet irradiation unit 150B and the number of partition units 150A are not limited to those shown in the figure and can be arbitrarily selected. For example, one or more ultraviolet irradiation units 150B and a plurality of partition units can be selected. It is also possible to partition the target area S by 150A.

Further, a door unit 150C (also included in the partition means 150) having a door function for entering and exiting may be partially engaged. The door unit 150C also has an engaging means 161 to engage with it.

In such a case, it is preferable to provide the movable plate 151 shown in FIG. 6B at the upper end of each partition means 150 (partition unit 150A or ultraviolet irradiation unit 150B). The movable plate 151 is a plate-like body that is also erected along the erection direction (height direction V) of the partition means 150, and is configured to be expandable and contractible in the height direction V as shown by an arrow a.

Further, the movable plate 151 may be configured to be rotatable about the rotation shaft 152 provided along the upper side of each partition means 150 as shown by an arrow b.

Further, the movable plate 151 may be configured to be rotatable around a rotation shaft 153 provided along the side side of each partition means 150 as shown by an arrow c.

The movable mode of the movable plate 151 is at least one of arrows a to c, and these may be combined. By arbitrarily moving the movable plate 151, the upper surface of the target area S can be covered to some extent, and the degree of shielding between the target area S where bacteria increase and the outside of the target area S can be increased. The movable mode of the movable plate 151 is not limited to any of the arrows a to c, and may be a configuration that can move relative to the partition means 150.

Although not shown, the movable plate 151 may be provided at the lower end of each partition means 150.

In this way, the ultraviolet irradiation system 200 is composed of a set (assembly) of a partition unit 150A and an ultraviolet irradiation unit 150B (and a door unit 150C) whose shape and the like are standardized and which can be connected by a common engaging means 161. As a result, the target area S can be easily and simply sterilized and washed by simply introducing one set of the ultraviolet irradiation system 200.

Further, by connecting a plurality of ultraviolet irradiation units 150B to arbitrary positions, it is possible to irradiate the target region S with ultraviolet rays from multiple directions, so that the ultraviolet irradiation effect can be enhanced.

Since the partition unit 150A itself has a shielding effect on bacteria, the bactericidal effect of the target area S of the ultraviolet irradiation system 200 will be maintained for a while. Therefore, it can be an effective means to temporarily isolate infected persons and those suspected of being infected, and to prevent the spread of infection by simply setting up a temporary room for medical examination. Further, the partition unit 150A may be subjected to antibacterial treatment or the like in advance.

Note that all the partitioning means 150 may be configured by the ultraviolet irradiation unit 150B.

Further, as shown in FIG. 13, a sheet material (cover material) 155 capable of covering all the partitioning means 150 in a state where the target area S is partitioned after the partitioning means 150 is engaged may be provided. .. Specifically, FIG. 13A shows a sheet material 155, which has a substantially cubic shape with an open bottom surface BT. The size of the sheet material 155 is slightly larger than the size of the partition means 150 for partitioning the target area S. Then, as shown in FIG. 13 (B), by covering the partition means 150 with the sheet material 155 from above, the target area S and the target area S as shown in FIGS. The degree of shielding from the outside (sealing degree) can be further increased.

Further, the sheet material 155 may have a substantially rectangular shape that can cover only the upper surface portion of the open target area S.

Another example of the ultraviolet irradiation system 200 of the present invention will be described with reference to FIG. The figure is a side view of the ultraviolet irradiation system 200.

The ultraviolet irradiation system 200 may include an exhaust means 181 that discharges at least a part of the air flowing out from the flow path 107 of the ultraviolet irradiation device 100 (ultraviolet irradiation unit 150B) to the outside of the target region S.

In this case, it is more preferable to have the air supply (intake) means 182 for introducing the air outside the target area S into the target area S.

FIG. (A) is a side schematic view conceptually showing the same ultraviolet irradiation system 200 as in FIG. 12, but in this case, the target area S is covered with the partition means 150 or the ceiling portion is also shown in the figure. As shown in 13, it is assumed that the space is covered with the sheet material 155 and is partitioned as a substantially closed space. The same applies when the target area S is partitioned by the partitioning means 150 (partitioning unit 150A) and the ultraviolet irradiation device 100 is arranged inside the target area S.

The ultraviolet irradiation system 200 includes, for example, an independent exhaust means 181 and an air supply means 182 for each target area S. The exhaust means 181 is an exhaust passage 181A, an exhaust fan 181B, or the like, and is connected to the outlet (upper end portion in this example) of the flow path 107 of the ultraviolet irradiation unit 150B. The exhaust means 181 may include an air conditioner (not shown), an appropriate filter such as HEPA, a duct, or the like. The air supply means 182 is an air supply (intake) path 182A or the like, and may include an exhaust fan (not shown) or an appropriate filter.

Further, it is preferable that the target area S and the outside thereof are controlled so as to have different pressures. Here, as an example, a case is shown in which the target area S is managed so as to have a negative pressure and the outside thereof has a negative pressure (negative pressure is managed inside the target area S). When accepting a carrier patient such as an infectious disease in the target area S for treatment, etc., the target area S is isolated by applying negative pressure to contain pathogens (infectious bacteria, viruses), etc. The spread of pollution can be effectively prevented. In addition, it is possible to prevent unnecessary polluted air from entering from the outside.

The contaminated air in the target area S is sterilized and purified by passing through the flow path 107 of the ultraviolet irradiation unit 150B as shown by the alternate long and short dash line, and is discharged into the target area S and circulated (circulated sterilized). Ru). When the target person such as a patient or a medical worker is absent, the blocking means 105 of the ultraviolet irradiation unit 150B is opened to directly irradiate the target area S with ultraviolet rays (indicated by a broken line) to create a space or the like. Sterilize adherent bacteria, floating bacteria (including falling bacteria), etc.

Then, a part of the purified and sterilized air (clean air) CA that has passed through the flow path 107 is discharged to the outside via the exhaust means 181. The connecting portion between the exhaust means 181 and the ultraviolet irradiation unit 150B is provided with appropriate measures to ensure that only clean air CA can pass through the exhaust means 181 (in the figure below). Same in the example). Appropriate measures include, for example, installation of a known tubular air sterilizer. For example, the tubular air sterilizer is equipped with a fan for sending air of about 1? / Hr on one side of the cylinder, and has a structure in which one straight UV lamp is lit inside the cylinder. The air that has passed through can be almost completely sterilized. As a result, it is possible to suppress the leakage of bacteria (contaminated air) in the target area S to the outside.

The figure (B) and the figure (C) exemplify the case where the partition means 150 is an air dome. That is, in the ultraviolet irradiation system 200, the ultraviolet irradiation device 100 is arranged in the target area S partitioned by the air dome (partitioning means) 150, and external air is taken into the target area S in the same manner as in FIG. The air supply means 182 and the exhaust means 181 that passes through the flow path 107 and discharges clean air CA to the outside are provided.

As shown in FIG. 3B, the air dome 150 constitutes a ceiling and a wall (and a floor) by, for example, a double wall structure of an inner wall 150D and an outer wall 150E. Then, by keeping the gap space GS between the inner wall 150D and the outer wall 150E under the condition of positive pressure rather than the target area S, the target area S is managed by negative pressure. The air flow and the mechanism of sterilization / purification (circulation sterilization) are the same as in Fig. (A).

A gap space GS is secured between the inner wall 150D and the outer wall 150E by, for example, supporting means (not shown) at predetermined intervals, and the pressure in the gap space GS is secured by the air supply / exhaust (intake / exhaust) means 183 for the air dome 150. Is controlled and managed. Further, by adopting the double wall structure, even if either the inner wall 150D or the outer wall 150E is damaged, the risk that the contaminated air in the target area S is immediately scattered to the outside can be reduced. ..

The figure (C) is an example of a single wall structure of the air dome 150. In this case as well, the ultraviolet irradiation device 100 is arranged in the target area S partitioned by the air dome 150, and the air supply means 182 that takes in the external air into the target area S and the flow path 107 are the same as in FIG. 181 is provided with an exhaust means 181 for discharging clean air CA to the outside through the above.

Also, in this case, it is an example of positive pressure management of the target area S. The mechanism of air flow and sterilization / purification (circulation sterilization) is the same as in FIG. 6A, except that the inside of the target area S is controlled by positive pressure.

For example, when a patient with weak resistance is accommodated in the target area S, the inside of the target area S can be positively pressured and used as a sterile hospital room in order to protect (reversely isolate) the patient from contamination outside the target area S. In the hospital, the pressure in the hospital room environment room is controlled and managed (negative pressure control, positive pressure control) according to the medical condition, but the ultraviolet irradiation system 200 of the present embodiment has both negative pressure control and positive pressure control. It is possible.

The air flow shown in the figure, control of sterilization / purification treatment (degree of sterilization / purification), pressure control, etc. (environmental control) are performed by exhaust means 181, air supply means 182, and air supply / exhaust (intake / exhaust) means. 183 and other sensors such as pressure and temperature (not shown) are controlled by a drive control means (not shown) for environmental control. In addition, some manual control may be performed.

<Ultraviolet irradiation method>
An example of the ultraviolet irradiation method (flow of sterilization / purification treatment) by the ultraviolet irradiation system 200 shown in FIG. 14 will be described.

In the event of a disaster, etc., when it becomes necessary to urgently treat victims, injured persons, carriers of infectious diseases, etc. at places other than specialized facilities such as existing hospitals, any location at any time In, the target area S is partitioned by the partitioning means 150 (tent, air dome, partition, etc.), and the ultraviolet irradiation device 100 is arranged in the target area S. Alternatively, the target area S is partitioned by the partitioning means 150 including at least the partition unit 150A and the ultraviolet irradiation unit 150B. Alternatively, the ultraviolet irradiation device 100 is carried (arranged) into a predetermined room (area partitioned by the partitioning means 150 such as a wall) that can be the target area S.

When the target area S is manned, the blocking means 105 of the ultraviolet irradiation device 100 (ultraviolet irradiation unit 150B, the same applies hereinafter) is closed, and the power of the ultraviolet light emitting means 101 is turned on (lighted). Although light is emitted from the ultraviolet light emitting means 101, the ultraviolet rays are blocked by closing the blocking means 105, and the ultraviolet rays are prevented from being directly irradiated to the target region S (human body).

On the other hand, the air flowing through the flow path 107 provided inside the ultraviolet irradiation device 100 is irradiated with ultraviolet rays to sterilize and purify the air, and the air (clean air) CA sterilized and purified by natural convection. Is discharged from the ultraviolet irradiation device 100 to the target area S.

Further, the target area S is continuously taken in the outside air by the air supply means 182, and a part of the purified and sterilized air (clean air) CA that has passed through the flow path 107 is exhausted by the exhaust means 181. It is discharged to the outside through.

Then, when the target area S becomes unmanned, the blocking means 105 is opened to put the ultraviolet rays in a non-blocking state. The ultraviolet light emitting means 101 has been continuously lit (without turning off) from the start of operation in a state where the ultraviolet irradiation system 200 is operating (operating) normally, in order to obtain sufficient sterilizing ability. The output has been reached. That is, at the same time as opening the blocking means 105, the target region S can be directly irradiated with ultraviolet rays having a sufficient bactericidal ability. As a result, the inside of the target area S can be efficiently sterilized and cleaned.

When the target area S becomes manned again, the blocking means 105 is closed while the ultraviolet light emitting means 101 continues to emit light, and the irradiation of the target area S of ultraviolet rays is blocked.

The blocking state / non-blocking state is controlled by the blocking means 105 automatically by the drive control means 109 and / or manually by the person in charge by operating a predetermined operating means (not shown) or the like.

As described above, according to the ultraviolet irradiation device 100 of the present embodiment, the clean air after sterilization is constantly circulated even when the target area S is manned (even when unmanned) by circulation sterilization. Can be made to. Moreover, since it is a portable type, it can be easily installed and removed at any timing and layout, and can also be used as a partition. Therefore, for example, when it is desired to clean the air at an arbitrary timing in a room where a plurality of people are accommodated (target area S), or when there is a patient with strong infectivity in a hospital, a temporary tent, or other facility, it is appropriate. , Can be installed and easily removed when not in use.

By setting the non-blocking state when necessary, it is possible to directly irradiate a large amount of ultraviolet rays from the ultraviolet light emitting means 101 in all directions without generating a shadow of irradiation. Therefore, as an example, the survival rate of bacteria (the number of surviving bacteria / the number of initial bacteria) can be reduced to 1/10 (the killing rate of bacteria is, for example, 99.9%) in a few minutes. In addition, by repeatedly sterilizing the bacteria before they grow (again), the room can be returned to a clean area before contamination, which is highly effective in suppressing infection.

<Second Embodiment>
15 to 21 are views for explaining an example of the second embodiment of the ultraviolet irradiation system 200. FIG. 15 is a side view showing an outline of another example of the ultraviolet irradiation system 200 of the present embodiment. 15 (A) and 15 (D) are side schematic views showing the state of the ultraviolet irradiation system 200 in the blocked state, and FIGS. 15 (B) and 15 (C) are the ultraviolet irradiation system 200 in the non-blocked state. It is a side view which shows the state.

As shown in FIG. 15, the ultraviolet irradiation system 200 of the present embodiment may include the ultraviolet reflecting means 250.

The ultraviolet reflecting means 250 is a means having a mirror surface (mirror surface) 250A that reflects the ultraviolet rays emitted (emitting) by the ultraviolet emitting means 101. In the ultraviolet reflecting means 250, for example, the entire surface of the surface facing the target region S is a mirror surface 250A. Further, in the ultraviolet reflecting means 250, at least the mirror surface 250A is movable relative to the ultraviolet emitting means 101. Here, as an example, a case where the ultraviolet reflecting means 250 is a portable type (for example, a self-supporting strut type) like the ultraviolet irradiation device 100 will be described. The ultraviolet reflecting means 250 can be moved to an arbitrary place, that is, can be moved relative to the ultraviolet light emitting means 101. Specifically, for example, the ultraviolet reflecting means 250 has a substantially rectangular frame body 250C and leg portions 250D that support the frame body 250C so as to stand upright, and one surface of the frame body 250C (a surface facing the target area S). Is provided with a mirror surface 250A that is relatively movable with respect to the frame body 250C.

For example, the ultraviolet reflecting means 250 is arranged at a position where the mirror surface 250A faces the target region S and can reflect the ultraviolet rays emitted by the ultraviolet emitting means 101 (in the example of FIG. 15, the position faces the ultraviolet emitting means 101). ..

As shown in FIGS. (B) and (C), the ultraviolet irradiation system 200 is in a non-blocking state when the target area S is unmanned. In the non-blocking state, the blocking means 105 is opened, the target region S is irradiated with ultraviolet rays, and the entire target region S is sterilized. In this sterilization treatment, not only objects such as furniture, walls, floors and ceilings existing in the target area S, but also the air in the target area S can be sterilized.

In addition, in the non-blocking state, the ultraviolet rays emitted from the ultraviolet light emitting means 101 to the target area S are reflected by the ultraviolet reflecting means 250 (mirror surface 250A) and are irradiated to the target area S again.
As a result, the amount of ultraviolet rays irradiated into the target area S increases. In addition, the area where ultraviolet rays do not reach can be reduced, and the bactericidal effect can be enhanced.

That is, the ultraviolet rays that can be used for sterilization are electromagnetic waves, and the directivity is only straight in the direction of irradiation. Therefore, for example, as shown by a thick broken line arrow (arrow from right to left) in FIGS. 15 (B) and 15 (C), there is an obstacle (such as a chair in this example) in the target area S. As a result, ultraviolet rays are blocked, and on the opposite side (back side of the obstacle), there is a region behind the obstacle where the ultraviolet rays do not reach (hereinafter, this region is referred to as an "ultraviolet non-reachable region"). Conventionally, there has been a problem that a sufficient bactericidal effect cannot be obtained in such a region where ultraviolet rays do not reach.

However, in the present embodiment, ultraviolet rays can be reflected by the ultraviolet reflecting means 250. More specifically, in the example shown in FIG. 15, the mirror surface 250A is arranged to face the light emitting surface of the ultraviolet light emitting means 101, but in reality, the mirror surface 250A is arranged with respect to the light emitting surface of the ultraviolet light emitting means 101. By arranging them at an angle (rather than parallel), it is possible to reflect ultraviolet rays in different (arbitrary) directions. That is, even if there is a region where the ultraviolet rays emitted from the ultraviolet light emitting means 101 do not reach (ultraviolet non-reachable region), the mirror surface 250A is appropriately moved so as to reflect the ultraviolet rays to the ultraviolet non-reachable region in advance. Ultraviolet rays can also be applied to non-ultraviolet areas (for example, as shown by the thick dashed arrow from left to right). Therefore, it is possible to irradiate ultraviolet rays from substantially multiple directions, and the sterilization ability can be greatly enhanced.

As described above, according to the second embodiment, since the ultraviolet reflecting means 250 can reflect the ultraviolet rays in an arbitrary direction, the target region S can be irradiated with the ultraviolet rays from multiple directions, and the ultraviolet non-reachable region is formed. It can be significantly reduced and the bactericidal effect can be enhanced.

Further, as in the first embodiment, since the flow path 107 is formed by the cover means 103 and the ultraviolet light emitting means 101, the air in the flow path 107 is sterilized and the clean air (sterilized air) by natural convection is used. Circulation (circulation sterilization) is possible.

If the ultraviolet irradiation device 100 and / or the ultraviolet reflecting means 250 is a portable type, the configuration is not limited to the one shown in the figure, and for example, it is a stationary type on a floor or the like, or is hung from a ceiling or a wall. It may be a mold or the like.

Further, the ultraviolet irradiation device 100 may be installed on a wall or the like in the target area S (indoor), for example. Further, the ultraviolet reflecting means 250 may be installed on a wall or the like in the target area S (indoor), and the mirror surface 250A may be configured to be movable relative to the ultraviolet light emitting means 101.

Another example of the ultraviolet irradiation system 200 of the present embodiment will be described with reference to FIG. FIG. 16 is a top view showing an outline of the ultraviolet irradiation system 200.

The target area S of the ultraviolet irradiation system 200 is the same as that of the first embodiment, and may be an existing area such as an indoor area, or an area partitioned from another area by the partitioning means 150 as needed. It may be.

As shown in FIG. 3A, in the ultraviolet irradiation system 200 of the present embodiment, the ultraviolet irradiation device 100 is arranged inside the target area S partitioned by the partition means 150. Further, the ultraviolet reflecting means 250 is also carried into the target area S from the outside. Alternatively, it is stored (installed) in advance in the target area S, and is moved / installed at a predetermined position as needed. That is, in the case of the ultraviolet irradiation system 200 shown in the figure, it is desirable that both the ultraviolet irradiation device 100 and the ultraviolet reflecting means 250 are not a wall-mounted type but a portable type (a configuration having portability).

Further, as shown in FIG. 6B, in the ultraviolet irradiation system 200 of the present embodiment, the ultraviolet irradiation device 100 and / or the ultraviolet reflecting means 250 may form a part of the partition means 150. When the target area S is partitioned by the partitioning means 150, the ultraviolet irradiation device 100 and / or the ultraviolet reflecting means 250 is installed as a part thereof. The partitioning means 150 is the same as that in the first embodiment.

In this way, in the ultraviolet irradiation system 200, the ultraviolet irradiation device 100 irradiates the target area S with ultraviolet rays having a wavelength of the sterilization region to sterilize and purify the air in the target area S and / or to the target area S. Sterilizes and purifies the surface of existing articles and the human body of the target person. Further, when the ultraviolet irradiation device 100 irradiates the target region S with ultraviolet rays, the ultraviolet reflecting means 250 reflects the ultraviolet rays.

Further, in the examples of FIGS. 15 and 16, one ultraviolet irradiation device 100 / and / or ultraviolet reflection means 250 are arranged in one target area S, but a plurality of ultraviolet irradiation devices 100 / and / or ultraviolet irradiation devices 100 / and are arranged in one target area S. Alternatively, the ultraviolet reflecting means 250 may be arranged (the same applies to each of the following figures). By arranging the plurality of ultraviolet reflecting means 250 at appropriate distances, it is possible to reflect ultraviolet rays in more directions. Further, the number of the ultraviolet irradiation device 100 and the ultraviolet reflecting means 250 does not have to be the same.

FIG. 17 is a diagram showing a specific example of the ultraviolet irradiation system 200 shown in FIG. 16, exemplifying a case where the ultraviolet irradiation device 100 constitutes a part of the partition means 150. FIG. 17A is a top view of the ultraviolet irradiation system 200, and FIG. 17B is a perspective view of the ultraviolet irradiation system 200.

The ultraviolet irradiation system 200 includes an ultraviolet irradiation device 100 that irradiates the target area S partitioned by the partition means 150 with ultraviolet rays, and an ultraviolet reflecting means 250 that reflects the ultraviolet rays. For example, the ultraviolet irradiation device 100 is not fixed so as not to be movable in the target area S, but can be moved integrally (independently) by unitizing the ultraviolet light emitting means 101, the covering means 103, and the blocking means 105. It is configured as a portable type. The ultraviolet reflecting means 250 has, for example, at least a mirror surface 250A, and is configured to be a portable type that can move independently (alone).

As shown in the figure, in this example, the partition means 150 is an ultraviolet irradiation device 100 (ultraviolet irradiation unit 150B) that is independently movable and unitized, and an ultraviolet reflection means 250 that is independently movable and unitized (ultraviolet irradiation unit 150B). UV reflection unit 150M) and included. That is, the partition means 150 includes at least an ultraviolet irradiation unit 150B and an ultraviolet reflection unit 150M, and in this example, includes a partition unit 150A, an ultraviolet irradiation unit 150B, and an ultraviolet reflection unit 150M.

The ultraviolet irradiation unit 150B has the same configuration as the above-mentioned ultraviolet irradiation device 100 (100A), but further includes an engaging means 161 capable of engaging with other members. Here, the other members are a partitioning means 150, another ultraviolet irradiation unit 150B (ultraviolet irradiation device 100), an ultraviolet reflection unit 150M (ultraviolet reflection means 250), and further other members.

The engaging means 161 of the ultraviolet irradiation unit 150B is provided at both ends of the support frame 121 (or the base material B), and other members are detachably engaged with each other.

The ultraviolet reflecting unit 150M has the same configuration as the above-mentioned ultraviolet reflecting means 250, but includes an engaging means 161 capable of engaging with other members. The engaging means 161 of the ultraviolet reflection unit 150M is provided at both ends of the frame body 250C, for example.

With such a configuration, the partition unit 150A, the ultraviolet irradiation unit 150B, and the ultraviolet reflection unit 150M are configured to be engaged with each other or with other members by the engaging means 161.

Further, each partition means 150 (partition unit 150A, ultraviolet irradiation unit 150B, and ultraviolet reflection unit 150M) has, for example, the same size or width direction H and / or as shown in FIGS. (A) and (B). It is preferable that it is configured by a unified standard in which the length (shape) of V in the height direction is uniform. Here, the ultraviolet irradiation device 100 which can be engaged with the partition unit 150A by the engaging means 161 and whose shape and size are configured in the same standard (unified size) as the partition unit 150A is particularly the ultraviolet irradiation unit 150B and the ultraviolet rays. Although the reflecting means 250 is separately referred to as an ultraviolet reflecting unit 150M, each of the above-mentioned ultraviolet irradiation devices 100 and the ultraviolet irradiation unit 150B has the same configuration, and the ultraviolet reflecting means 250 and the ultraviolet reflecting unit 150M have the same configuration. Therefore, for the sake of description in the present specification, the ultraviolet irradiation device 100 and the ultraviolet irradiation unit 150B may be replaced, and the ultraviolet reflecting means 250 may be replaced with the ultraviolet reflecting unit 150M.

The same members (partition means 150), that is, partition units 150A, ultraviolet irradiation units 150B, and ultraviolet reflection units 150M can be engaged with each other by the engaging means 161. That is, the target area S is defined by continuously connecting (engaging) them. In other words, the partition unit 150A, the ultraviolet irradiation unit 150B and the ultraviolet reflection unit 150M function as a part of the partition means 150.

In this example, the ultraviolet reflection unit 150M is engaged with the opposite position of the ultraviolet irradiation unit 150B, but the engagement positions and the number of engagements including the partition unit 150A are not limited to those shown in the figure. It can be arbitrarily selected, and for example, the target area S can be partitioned by one or a plurality of ultraviolet irradiation units 150B, a plurality of ultraviolet reflection units 150M, and the like.

Further, as shown in the figure, a door unit 150C (also included in the partition means 150) having a door function for entering and exiting may be partially engaged.

In such a case, the movable plate 151 shown in FIG. 6B may be provided at the upper end of each partition means 150 (partition unit 150A, ultraviolet irradiation unit 150B, ultraviolet reflection unit 150M, (and door unit 150C)). ..

The movable mode of the movable plate 151 is at least one of arrows a to c, and these may be combined. Although not shown, the movable plate 151 may be provided at the lower end of each partition means 150.

Further, at least one of the movable plates 151 (for example, the movable plate 151 such as the partition unit 150A and the ultraviolet reflecting unit 150M) is provided with a mirror surface 250A on the surface facing the target region S (the movable plate 151 is also an ultraviolet reflecting means). 250) is even more desirable.

In this way, the ultraviolet irradiation system 200 is set (assembled) of a partition unit 150A, an ultraviolet irradiation unit 150B, and an ultraviolet reflection unit 150M (and a door unit 150C) whose shape and the like are standardized and can be connected by a common engaging means 161. ), The target area S can be appropriately partitioned by the partitioning means 150 only by introducing one set of the ultraviolet irradiation system 200, and the target area S can be easily and simply sterilized and washed.

In addition, the layout of the target area S and the layout of the ultraviolet irradiation unit 150B and the ultraviolet reflection unit 150M can be easily changed.

Further, by connecting the plurality of ultraviolet irradiation units 150B and the ultraviolet reflection unit 150M at arbitrary positions, it is possible to irradiate the target region S with ultraviolet rays from multiple directions, so that the effect of irradiating ultraviolet rays can be enhanced. it can.

Further, although not shown, when the target area S as shown in FIG. 17 is configured, all the partitioning means are in a state where the target area S is partitioned after engaging the partitioning means 150 as in FIG. A sheet material (cover material) 155 capable of covering 150 may be provided. In this case, the surface of the sheet material 155 facing the target region S may be a mirror surface 250A (for example, in the form of a film) (the sheet material 155 may also be the ultraviolet reflecting means 250).

18 and 19 are still diagrams showing other examples of the present embodiment. 18A and 18B are schematic views of the inside of the target area S, where FIG. 18A is a top view and FIGS. 18B and 18C are side views. Further, FIG. 19 is a schematic top view of the target area S.

The ultraviolet irradiation system 200 of the present embodiment may include a plurality of ultraviolet reflecting means 250 in one target area S.

FIG. 18 is an example of a configuration in which ultraviolet rays are efficiently reflected and the target area S can be irradiated with ultraviolet rays from multiple directions. By arranging a plurality of ultraviolet reflecting means 250 as shown in FIG. 3A, it is possible to irradiate ultraviolet rays from substantially all directions. Here, the ultraviolet reflecting means 250 is, for example, a portable type (for example, an imposition type) like the ultraviolet irradiation device 100, in which the entire surface of the surface facing the target region S is a (one) mirror surface 250A. is there. More specifically, by arranging the plurality of ultraviolet reflecting means 250 so that their mirror surfaces 250A are not parallel to the light emitting surface of the ultraviolet light emitting means 101 (the surface of the base material B) but at a certain angle. , It is possible to reflect ultraviolet rays in different (arbitrary) directions. That is, even if an ultraviolet non-reachable region of ultraviolet rays emitted from the ultraviolet light emitting means 101 is generated, by appropriately moving the mirror surface 250A so as to reflect the ultraviolet rays to the ultraviolet non-reachable region in advance, the ultraviolet non-reachable region is reached. Can also reflect (irradiate) ultraviolet rays. Therefore, it is possible to irradiate ultraviolet rays from substantially multiple directions, and it is possible to efficiently sterilize a wide area.

FIG. 3B is an example of the ultraviolet reflecting means 250 provided with

mirror surfaces

250A and 250B that can move relative to the ultraviolet emitting means 101. The ultraviolet reflecting means 250 has a substantially rectangular frame body 250C and legs 250D that support the frame body 250C so as to stand upright, and the frame body 250C is on one surface of the frame body 250C (the surface facing the target area S). Mirror surfaces 250A and 250B that can move relative to each other are provided. Here, as an example, the mirror surface 250A has a plurality of strip-shaped parts (louvers) along the width direction, and each louver is independent about the rotation axis RR provided along the width direction. It can be arbitrarily moved (swinged) and can be changed to an arbitrary angle with respect to the surface of the frame body 250C. As the configuration and movable mode of the mirror surface 250A, the same configuration and movable mode as the blocking means 105 described with reference to FIG. 8 can be applied.

The figure (B) illustrates a configuration in which the mirror surface 250A is divided into strips in the horizontal direction, but the configuration may be divided into strips in the vertical direction or a configuration in which the mirror surface 250A is divided into a matrix. Further, a plate-shaped mirror surface 250B may be provided above the frame body 250C. The mirror surface 250B is movable in the same manner as the movable plate 151 shown in FIG. 17, for example. In these cases, the movement (opening and closing) of the ultraviolet reflecting means 250 (mirror surfaces 250A, 250B) is performed, for example, by electrical (electronic) control or manual operation by a drive control means 109 (not shown here). Thereby, the reflection direction can be easily changed as appropriate.

Further, as shown in FIG. 6C, the upper mirror surface 250B may have a curved structure.

In this example, the case where the mirror surface 250A divided into one frame body 250C is provided is illustrated, but one movable (plane) mirror surface 250A may be provided on one frame body 250C. .. The planar mirror surface 250A is attached so as to be rotatable (swinging) around a rotation axis along at least one side of the substantially rectangular frame body 250C, for example. Thereby, the reflection direction can be easily changed as appropriate.

Alternatively, for example, by providing a windable mirror surface 250A near the upper side or one side side of the frame body 250C and adjusting the pull-out amount in the downward or other side side direction, the range of the mirror surface 250A can be appropriately adjusted. It may be configured to be changeable.

Further, in the figure (B), the ultraviolet reflecting means 250 may be fixed to the wall surface of the target area S or the like, or may be a portable type. For example, the ultraviolet reflecting means 250 may be portable and may be configured to be movable relative to the ultraviolet emitting means 101 (regardless of whether the ultraviolet reflecting means 250 is portable or stationary). ) At least the mirror surface 250A may be configured to be relatively movable with respect to the ultraviolet light emitting means 101 as shown in FIG.

The mirror surface 250A is not limited to the configuration of opening and closing by the louver shown in FIG. 8B, but is configured to move (open and close) in the same manner as the blocking means 105 described with reference to FIG. May be good.

FIG. 19 is another example of the case where a plurality of ultraviolet reflecting means 250 (ultraviolet reflecting unit 150M) are arranged in one target area S. Here, the ultraviolet reflecting means 250 is, for example, a portable type (for example, an imposition type) like the ultraviolet irradiation device 100, in which the entire surface of the surface facing the target region S is a (one) mirror surface 250A. is there. The same applies even if the ultraviolet irradiation device 100 in the figure is replaced with the ultraviolet irradiation unit 150B, the ultraviolet reflecting means 250 is replaced with the ultraviolet reflecting unit 150M, and the partitioning means 150 is replaced with the partition unit 150A. The configuration of the ultraviolet reflecting means 250 (ultraviolet reflecting unit 150M, the same applies hereinafter) is the same as any of the above.

The ultraviolet irradiation device 100 and the ultraviolet reflecting means 250 are configured to be engaged with each other by the engaging means 161.

In FIG. 6A, one ultraviolet irradiation device 100 is arranged along one side wall (side surface) of the target area S partitioned by the partitioning means 150 (partitioning unit 150A), and the ultraviolet reflecting means are respectively on both sides thereof. This is an example in which 250 is engaged. By appropriately changing the angle of reflection of ultraviolet rays by the mirror surface 250A of the ultraviolet reflection means 250, the target region S can be irradiated with ultraviolet rays to be sterilized and purified.

FIG. 3B is an example in which the ultraviolet irradiation unit 150B and the ultraviolet reflection unit 150M are engaged with each other to partition the target area S. The partition unit 150A (and / or the door unit 150C) may be included in a part thereof. By appropriately changing the angle of reflection of ultraviolet rays by the mirror surface 250A of the ultraviolet reflection unit 150M, the target region S can be irradiated with ultraviolet rays to be sterilized and purified.

FIG. 3C is an example in which one ultraviolet irradiation device 100 is arranged near the center of the target area S, and two ultraviolet reflecting means 250 are engaged with each of the two ultraviolet irradiation devices 100. In this case, the ultraviolet irradiation device 100 has a configuration capable of irradiating both sides of the ultraviolet rays as shown in FIGS. 9 to 11, for example. By appropriately changing the angle of reflection of ultraviolet rays by the mirror surface 250A of the ultraviolet reflection means 250, the target region S can be irradiated with ultraviolet rays to be sterilized and purified.

The ultraviolet irradiation device 100 and the ultraviolet reflecting means 250 also function as partitions that further partition the inside of the target area S.

In FIG. 3D, one ultraviolet irradiation device 100 is arranged along one side wall (side surface) of the target area S partitioned by the partition means 150 and one side wall (side surface) facing the side wall (side surface). This is an example in which the ultraviolet reflecting means 250 are engaged on both sides thereof. By appropriately changing the angle of reflection of ultraviolet rays by the mirror surface 250A of the ultraviolet reflection means 250, the target region S can be irradiated with ultraviolet rays to be sterilized and purified.

In this example, the case where the ultraviolet reflecting means 250 is engaged with each side of each ultraviolet irradiation device 100 so as to be openable and closable in a double-sided manner is shown, but only one side of the ultraviolet irradiation device 100 is shown. It may be configured to engage with.

In this way, by arranging the ultraviolet reflecting means 250 at an appropriate position where the ultraviolet rays output from the ultraviolet irradiation device 100 can be reflected, the ultraviolet rays are efficiently reflected and the target region S is irradiated with the ultraviolet rays from multiple directions. It will be possible. Further, by arranging a plurality of ultraviolet reflecting means 250, it is possible to irradiate ultraviolet rays from substantially all directions.

Further, the ultraviolet reflection means 250 is not limited to the state shown in the figure, and the reflection angle of the ultraviolet rays emitted from the ultraviolet irradiation device 100 can be arbitrarily changed.

FIG. 20 is a top view showing another example of the ultraviolet irradiation device 100 and the ultraviolet reflecting means 250. The ultraviolet reflecting means 250 may be provided integrally with the ultraviolet irradiation device 100, for example. The ultraviolet irradiation device 100 (100B) of this example has a door 180 that can be opened and closed so as to cover or open the front surface of the ultraviolet light emitting means 101, and the door 180 is provided with the ultraviolet reflecting means 250 (mirror surface 250A). ..

For example, the support frame 121 (base material B) supports the UV lamp LP, and the cover means 103 is fixed to the support frame 121 so as to cover the front surface thereof. The door 180 is provided so as to further cover the cover means 103. That is, the rotating shafts 167 are arranged at both ends of the support frame 121 in the width direction H, and one end of the connecting member 168 is rotatably connected around the rotating shaft 167A. Further, a rotating shaft 167B is also provided at the other end of the connecting member 168, and one end of the door 180 is rotatably connected around the rotating shaft. As a result, the door 180 is configured to be rotatable around the

rotation shafts

167A and 167B (so-called double door opening is possible) as shown by the solid arrow in FIG.

And, as shown in the figure, the door 180 has a two-layer structure in which the ultraviolet reflecting means 250 (or the mirror surface 250A, hereinafter the same in the figure) and the blocking means 105 are superimposed. The ultraviolet reflecting means 250 is provided on the surface (inside) facing the target area S with the door 180 open, and the blocking means 105 is provided on the back side (outside) thereof. That is, the ultraviolet reflecting means 250 is provided integrally with the ultraviolet irradiating device 100, and more specifically, the blocking means 105.

According to such a configuration, when the target area S is unmanned, by opening the door 180 at an arbitrary angle, the ultraviolet rays emitted by the ultraviolet light emitting means 101 are emitted in an arbitrary direction as shown in FIG. Can be reflected.

On the other hand, as shown in FIG. 3B, when the door 180 is closed, the front of the ultraviolet light emitting means 101 is completely covered by the door 180, and the target area is covered by the blocking means 105 provided on the door 180. Irradiation of ultraviolet rays to S is blocked.

Further, in the closed state, the ultraviolet reflecting means 250 provided inside the door 180 faces the ultraviolet light emitting means 101. That is, since the ultraviolet rays emitted from the ultraviolet light emitting means 101 are reflected, the amount of ultraviolet rays irradiated to the flow path 107 can be improved (doubled). Therefore, the efficiency of circulation sterilization can be significantly improved.

A wide range of motion of the door 180 can be secured by rotatably supporting the connecting member 168 with the rotating shaft 167A, but the connecting member 168 is fixed (non-rotatably) to the support frame (frame body) 121. You may be.

Further, the door 180 is not limited to the configuration in which the door 180 is connected to the frame 121 by the (dedicated) connecting member 168. For example, the door 180 is configured separately from the frame 121, that is, is connected to the above-mentioned ultraviolet irradiation device 100 (ultraviolet irradiation unit 150B) (shown in FIGS. 1 to 19) by the engaging means 161. There may be.

Further, the engagement is not limited to the engagement by the engaging means 161. One or a plurality of the above-mentioned ultraviolet irradiation devices 100 (ultraviolet irradiation unit 150B) may be configured by the ultraviolet irradiation device 100B shown in FIG.

As in this example, the blocking means 105 and the ultraviolet reflecting means 250 (mirror surface 250A) may be provided in an overlapping manner, or both may be integrally movable relative to the ultraviolet emitting means 101. .. In that case, the shape of the door 180 is not limited, and for example, it may be configured so that it can be wound and stored above or below the frame body 121, and can be opened and closed in the vertical direction in a shutter shape or a roll (curtain) shape.

Further, in the configuration in which the blocking means 105 and the ultraviolet reflecting means 250 (mirror surface 250A) are superposed, the blocking means 105 and the ultraviolet reflecting means 250 may be individually movable relative to the ultraviolet emitting means 101. .. Further, at least one of the blocking means 105 and the ultraviolet reflecting means 250 may be configured in a plurality of divided shapes (for example, a louver) as shown in FIGS. 8 (C) and / or 18 (B). ..

FIG. 21 is a diagram showing another example of the ultraviolet irradiation system 200 using the ultraviolet irradiation device 100, and is a schematic view of an example in which the ultraviolet reflecting means 250 are arranged in the ultraviolet irradiation system 200 described with reference to FIG. Is.

FIG. 21 (A) is an example of a case where the ultraviolet irradiation system 200 includes an exhaust means 181 and an air supply means 182. FIG. 3B is an example of a case where the partitioning means 150 is a double-walled air dome, and FIG. 3C is an example of a case where the partitioning means 150 is a single-walled air dome.

In the figure, as an example, a configuration in which the opposition-shaped ultraviolet reflecting means 250 is arranged in the target area S is shown, but the ultraviolet reflecting means 250 is the inner surface (target area S) of the partitioning means 150 (tent, air dome, etc.). It may be provided on at least a part of the inner wall surface facing the surface). In that case, for example, a plate-shaped or sheet-shaped mirror surface 250A may be suspended or attached (movably relative to the ultraviolet light emitting means 101). Further, at least a part of the inner surface of the partition means 150 (for example, a part of the material of the tent or the air dome) may be processed so as to have a mirror surface 250A. It is preferable that the ultraviolet reflecting means 250 can move at least the mirror surface 250A relative to the ultraviolet emitting means 101. In that case, for example, the ultraviolet reflecting means 250 is fixedly arranged (in the partition means 150 or the like) and the ultraviolet irradiating device. The configuration may be such that the 100 is portable and movable.

An example of the ultraviolet irradiation method (flow of sterilization / purification treatment) in the ultraviolet irradiation system 200 shown in FIG. 21 is the same as the method described with reference to FIG. 14, but according to the present embodiment, the ultraviolet light emitting means 101 The emitted ultraviolet rays can be reflected in any direction by the ultraviolet reflecting means 250. As a result, the inside of the target area S can be efficiently sterilized and cleaned.

The blocking / non-blocking state control by the blocking means 105 and / or the movement control of the ultraviolet reflecting means 250 (mirror surface 250A) are automatically performed by the drive control means 109 and / or a predetermined operating means by the person in charge. It is manually performed by an operation (not shown) or the like.

Even when the ultraviolet irradiation device 100 shown in FIGS. 9 to 11 is used as the ultraviolet irradiation system 200, the ultraviolet reflecting means 250 capable of reflecting ultraviolet rays can be arranged in the target area S. In these cases, a plurality of ultraviolet rays are reflected so that the ultraviolet rays can be reflected on both sides (first surface Sf1 side and second surface Sf2 side) of the ultraviolet irradiation device 100 corresponding to the ultraviolet light emitting means 101. It is preferable to arrange the means 250.

<Other examples of UV irradiation equipment>
FIG. 22 is a side view conceptually showing still another example of the ultraviolet irradiation device 100. In the above-mentioned ultraviolet irradiation device 100 (100C), the blocking means 105 shows a configuration in which a physical member is moved relative to the ultraviolet emitting means 101 to switch between a blocking state and a non-blocking state. However, the present invention is not limited to this, and the blocking means 105 is a physicochemical material, and may be configured to switch between a blocking state and a non-blocking state by electrically controlling the material.

Alternatively, the blocking means 105 may be a certain material, and may be configured to switch between a blocking state and a non-blocking state of ultraviolet rays by physical control and / or chemical control of the material.

For example, as shown in the figure, the selection means 171 capable of selecting the transmission / non-transmission of ultraviolet rays (in a predetermined pattern) on the front surface of the ultraviolet light emitting means 101 in which the ultraviolet light source LP of the sterilization region is arranged on the base material B. To place. The selection means 171 is, for example, an electronic (electrical) shutter in which an electrode, a polarizing plate (layer), a light distribution layer, a liquid crystal, and the like are combined like a liquid crystal panel.

Further, in front of the selection means 171, a switching means 173A in which the material of the blocking means 105 is selectively arranged (in a predetermined pattern) is arranged.

Then, by electrically (electronically) controlling the selection means 171, the ultraviolet ray blocking state and the non-blocking state may be controlled.

Further, for example, the blocking means 105 can be repeatedly generated (appeared) / extinguished (evacuated) by, for example, physical control of the material (for example, ejection or suction) or chemical control (chemical reaction). It may be a form of means. The generation (appearance) of the gaseous blocking means 105 causes the ultraviolet rays to be blocked, and the extinction (evacuation) causes the non-blocking state.

In all the above-described embodiments, the leg portion 123 (leg portion 250D, caster 125) may be configured to be movable or foldable in order to improve the ease of storage.

Further, at least one of the movable plates 151 (for example, the movable plate 151 such as the partition unit 150A and the ultraviolet reflection unit 150M) may be provided with a mirror surface 250A on the surface facing the target region S (the movable plate 151 is ultraviolet rays). Reflective means 250).

Further, when the target area S is manned, it is advisable to provide a motion sensor in order to prevent accidentally irradiating ultraviolet rays harmful to the human body. When the drive control means 109 detects a manned person by the motion sensor, the drive control means 109 automatically stops (turns off) the light emission of the ultraviolet light emitting means 101. As the motion sensor, for example, a sensor capable of detecting a 240 ° region that largely covers the ultraviolet irradiation region can be used.

The motion sensor constantly detects whether the room is manned or unmanned, and transmits the detection result to the drive control means 109. Further, although not shown, the ultraviolet irradiation device 100 controls the power supply, the lighting / extinguishing of the ultraviolet light emitting means 101 (selective lighting / extinguishing of an arbitrary UV lamp LP), the ultraviolet irradiation intensity control, and the covering means 103. It has a controller (not shown) that can manually input signals such as opening / closing control of UV rays.

The drive control means 109 controls the lighting / extinguishing of the power supply, the ultraviolet light emitting means 101, the ultraviolet irradiation intensity control, the cover means 103 and / or the blocking means based on the signal from the motion sensor and the controller of the ultraviolet irradiation device 100. The opening / closing control of 105 is performed. As described above, for example, in the drive control means 109, the ultraviolet light emitting means 101 always lights the UV lamp LP during normal operation, and the blocking means 105 blocks and does not block the ultraviolet rays to the target region S. Can be switched. However, when the drive control means 109 detects a manned person with a motion sensor or the like, the UV lamp LP is turned off (and / or the irradiation intensity of ultraviolet rays is reduced, or the blocking means 105 is turned off, giving the highest priority to safety. It is configured to be closed).

Further, for example, when shifting from the ultraviolet ray blocking state to the non-blocking state, it is necessary to evacuate the personnel in the target area S to the outside of the target area S. Therefore, it is preferable to provide a timer or the like that can set the evacuation time from the time when the operation time of the UV lamp LP is set to the start of lighting to an arbitrary time.

In addition, it is preferable to provide an emergency stop button that instantly stops the light emission of the UV lamp LP by a simple operation of the operation means manually by the worker (for example, one push of a button).

Further, the cover means 103 may be manually opened and closed, in which case it is preferable to provide an open / close detection sensor for detecting the open / close of the cover means 103. The open / close detection sensor is interlocked with the motion sensor, for example, and when the open / close detection sensor detects the opening of the cover means 103, the detection signal of the motion sensor is transmitted to the drive control means 109 and the output of the ultraviolet light emitting means 101 is stopped. (Turns off).

As described above, in the above-described embodiment, the case where the ultraviolet light emitting means 101 is provided on a substantially vertical surface has been described as an example, but it may be provided on an inclined surface or a horizontal surface. That is, the openings serving as the air inlet IN and the air outlet OUT are not limited to above and below the vertical direction V of the ultraviolet irradiation device 100, but may be provided on the left and right. When the ultraviolet light emitting means 101 is provided on a horizontal surface, an airflow control means (circulator or the like) that promotes the uptake of air in the target region S and the discharge of air after sterilization may be provided.

Further, in the above-described embodiment, the area partitioned by the partitioning means 150 has been described as an example of the target area S, but the partitioning means 150 may not be arranged. That is, for example, in the event of a disaster or the like, the ultraviolet irradiation device 100 of the present embodiment may be installed as needed in the outdoors where the partition means 150 does not partition. In this case, the reachable range of the ultraviolet rays emitted from the ultraviolet irradiation device 100 is the target area S of the present embodiment.

Further, the ultraviolet reflecting means 250 may be installed on a wall of the target area S or the like, and the mirror surface 250A may be configured to be movable relative to the ultraviolet light emitting means 101.

Further, the ultraviolet irradiation device 100 may have means (conversion means, not shown) for converting the wavelength of the light output by the ultraviolet light emitting means 101. The conversion means is, for example, a means for converting ultraviolet light into visible light, or a means for cutting at least all the light in the sterilization region (UVC wavelength region) and at the same time transmitting only visible light to the surface.

Specifically, the conversion means is, for example, a means for adhering or containing a phosphor, and the phosphor is, for example, a material having high stability over time capable of converting ultraviolet rays into visible light. It is a kind of material such as certain calcium halophosphate and rare earth phosphors. As the conversion means, for example, a filter in which the fluorescent material is dispersed as a coating liquid and applied (coated) to the plate material is adopted so that the fluorescent material can be coated uniformly and without gaps so that it is mainly used as a coating material on the inner surface of the fluorescent lamp bulb. it can.

By providing such a conversion means, the visible light transmitted through the conversion means and the cover means 103 (a transparent member capable of transmitting visible light) can be used as illumination in the target area S. Further, the conversion means may also use the blocking means 105.

Note that the above-mentioned ultraviolet irradiation device 100 may be configured so that the cover means 103 is not provided (circulation sterilization is not performed) and only the blocking state and the non-blocking state can be switched by the blocking means 105.

The configuration of the ultraviolet irradiation system 200 according to the embodiment of the present invention described above can be implemented in appropriate combinations. As an example, the ultraviolet irradiation device 100 (ultraviolet irradiation unit 150B) constituting the ultraviolet irradiation system 200 shown in FIGS. 12, 14, 17, 19, 19 and the like is irradiated with ultraviolet rays having the door 180 shown in FIG. 20. It may be configured by the device 100B.

In the conventional sterilization device using ultraviolet irradiation, light distribution is emphasized in consideration of safety to the human body, and the UV irradiation area is limited to a part of the room, causing an unirradiated area and sterilizing the entire room. Was incomplete. Further, in the case of a manned person, the irradiation of ultraviolet rays was stopped (the UV lamp was turned off), and the UV lamp was turned on when necessary. In this case, since it takes a predetermined time to output ultraviolet rays having the light energy required for the sterilization process, it is not possible to respond instantly when sterilization is required, and the human body enters the sterilization target space. (For example, in the case of sterilization in a doctor's office or the like, the patient's waiting time for entering the room becomes long), which is insufficient in terms of operation.

On the other hand, in the ultraviolet irradiation system 200 of the present invention, the ultraviolet light emitting means 101 (always) irradiates ultraviolet rays during normal operation, and in the case of a manned person, the blocking means 105 moves (opens and closes) the manned area. Switch between the non-blocking state and the blocking state of ultraviolet rays to.

Further, when the sterilization treatment is performed while maintaining the output from the ultraviolet light emitting means 101 (lighting of the UV lamp) during normal operation, the effective ultraviolet shielding area of the ultraviolet blocking surface is minimized in a very short time. While minimizing the ultraviolet non-reachable area, the entire area of the target area S can be irradiated with ultraviolet rays, and the number of bacteria in the target area S can be reduced within the permissible standard in a short time.

That is, when the sterilization treatment is performed, the ultraviolet irradiation region can be totally collectively irradiated to the target region S without being limited to, for example, an unmanned region, and is also effective for the sterilization treatment. It is possible to irradiate instantly with a peak output of light energy. With such a configuration, the infection source of the target area S can be efficiently treated in a short time.

Specifically, the target region S is irradiated with ultraviolet rays having a sterilizing wavelength over the entire surface (irradiation with most UV lamp LPs exposed), and the bacteria are killed all at once in a short time (1 to 2 minutes). be able to. After the bacteria (source of infection) are killed by this sterilization treatment, a clean state can be maintained for 1 to 2 hours (without continuing the sterilization treatment).

As a result, when the permissible number of bacteria in the target area S to be used is exceeded, the number of bacteria in the target area S can be quickly reduced within the permissible number. Further, when there is a possibility that a bacterial species that should not be mixed in the target area S to be used is mixed, the bacterial species can be sterilized quickly.

In addition to this, even in the case of manned by forming the flow path 107 with the cover means 103 and the ultraviolet light emitting means 101, the air passing through the flow path 107 is sterilized by irradiating the air with ultraviolet rays, and by natural convection. , Clean air can be slowly raised to the vicinity of the ceiling as an updraft without power and discharged. As a result, clean air spreads to the target area S as a downward flow without significantly disturbing the laminar flow of the target area S (room). For this reason, it is difficult for particles and the like that serve as a hotbed of bacteria to accumulate, and the number of bacteria can be reduced as long as the bacteria correspond to the bacteria that are dusted and generated from workers (operators, etc.) in the target area S. Even when the sterilization treatment by full-scale irradiation is not performed, the effect of suppressing the number of bacteria can be obtained.

Further, since the waiting time when the sterilization treatment is performed (the waiting time until the UV lamp LP becomes an effective output for the sterilization treatment) can be reduced, the bacteria in the target area S are particularly when the sterilization treatment is frequently performed. It is possible to minimize the resource input and the decrease in turnover rate for the number control work.

Further, the ultraviolet irradiation system 200 of the present embodiment does not only purify only the taken-in air, but also circulates the purified air to the target area S and circulates the purified air to the outside of the target area S. Can be discharged.

Ultraviolet rays that can be used for sterilization are electromagnetic waves, and since the directivity is only straight in the direction of irradiation, the sterilization back surface cannot obtain a sterilization effect if there is an obstacle, but in this embodiment, portable ultraviolet rays. Since the irradiation device is used, it is possible to move to an arbitrary place (a place without obstacles) as appropriate.

Further, by engaging the plurality of ultraviolet irradiation devices 100 with the engaging means, it is possible to irradiate ultraviolet rays from other directions.

Further, by providing the ultraviolet reflecting means 250 that reflects ultraviolet rays at an appropriate position, it is possible to irradiate the target region S with ultraviolet rays from substantially all directions. That is, the ultraviolet non-reachable region is reduced as much as possible, and efficient sterilization and purification treatment becomes possible.

In the above embodiment, the case where the ultraviolet irradiation device 10 is a self-supporting opposition type is illustrated, but the ultraviolet irradiation device 10 is attached and fixed to the wall surface of the target area S (for example, a partitioned space such as a room). It may be configured to be.

Further, the above-mentioned (portable) partitioning means 150 is not indispensable, and the target area S is a predetermined space partitioned by a wall or a partition, or a space (indoor) in a building such as a medical facility or a commercial complex. Alternatively, it may be a tent provided outdoors, a space inside a booth, or a space in a predetermined area outdoors.

<Third Embodiment>
The ultraviolet irradiation device 100 (100D) of the third embodiment of the present invention will be described with reference to FIG. 23. FIG. 23 is a schematic view showing a side surface of the ultraviolet irradiation device 100 (100D) of the third embodiment when it is installed in the target area S. In this example, the target area S is a room partitioned by a wall or the like, and shows a case where the ultraviolet irradiation device 100 (100D) is attached to a wall surface (partitioning means) or the like.

The ultraviolet irradiation device 100 (100D) of the third embodiment includes an ultraviolet light emitting means 101, a cover means 103, and a conversion means 131.

Since the ultraviolet light emitting means 101 is the same as that of the first embodiment, the description thereof will be omitted. Further, the cover means 103 is arranged to face the ultraviolet light emitting means 101 so as to form an air flow path 107 with the ultraviolet light emitting means 101. Further, as an example, as in the first embodiment, the cover means 103 includes a blocking means 105 that blocks at least a part of the ultraviolet rays (light having a wavelength in the UVC region) emitted by the ultraviolet emitting means 101.

And the ultraviolet irradiation device 100D of the third embodiment has a conversion means 131 in addition to this. The conversion means 131 is a means for converting the wavelength of light output by the ultraviolet light emitting means 101, and specifically, a means for converting ultraviolet light into visible light, or at least light in a sterilization region (UVC wavelength region) (UVC wavelength region). Light of 400 nm or less) is a means for cutting all and at the same time transmitting only visible light. The conversion means 131 is configured so that its valid state and invalid state can be switched.

Specifically, the conversion means 131 is, for example, a means for adhering or containing a phosphor, and the phosphor is, for example, a material having a high stability over time capable of converting ultraviolet rays into visible light. It is a material of the kind such as calcium halophosphate and rare earth phosphors. The conversion means 131 is, for example, a filter in which the phosphor material is dispersed as a coating liquid and coated (coated) on a plate material so that the fluorescent lamp material can be coated uniformly and without gaps so that it is mainly used as a coating material on the inner surface of a fluorescent lamp bulb. Can be adopted.

Further, the conversion means 131 may also serve as the blocking means 105. In that case, for example, at least light in the sterilization region (UVC wavelength region) (light having a wavelength of 400 nm or less, which is an ultraviolet wavelength region harmful to the human body). ) Can be applied to the surface of a UV cut filter that cuts all, or a filter (visible light conversion filter) containing a fluorescent substance in the UV cut filter can be adopted. When the conversion means 131 also serves as the blocking means 105, the covering means 103 may not include the blocking means 105. On the other hand, when the conversion means 131 is not sufficient to block the ultraviolet light of 400 nm or less, the cover means 103 is configured to include the above-mentioned blocking means 105.

Further, as already described, the cover means 103 is a transparent member capable of transmitting visible light, and the visible light transmitted through the conversion means 131 is also transmitted through the cover means 103 and used as illumination in the target area S. be able to.

Here, as an example, the blocking means 105 and the converting means 131 are integrally configured with, for example, the covering means 103. On the other hand, the cover means 103 is configured to be movable relative to the ultraviolet light emitting means 101, and the state can be changed between the effective state and the invalid state of the cover means 103.

That is, the ultraviolet irradiation device 100 (100D) of this example is configured so that the ultraviolet blocking state and the non-blocking state can be switched, and the conversion means 131 is effective in the blocking state.

Specifically, FIG. 3A shows a state in which the cover means 103 is in an effective state, that is, a state in which ultraviolet rays are blocked. For example, when the room S is manned, as shown in FIG. 6A, the cover means 103 is closed so as to cover the front surface of the ultraviolet light emitting means 101, and the conversion means 131 is closed with the ultraviolet rays (small) of the ultraviolet light emitting means 101. It is arranged in the light emitting direction (front) in the light emitting direction (broken line) (the front of the ultraviolet light emitting means 101 is covered with the converting means 131). As a result, the ultraviolet light emitted by the ultraviolet light emitting means 101 (light having a wavelength in at least the UVC region) is converted into visible light (large broken line) by the converting means 131, and the target region S is irradiated with visible light (shown by the large broken line). .. Further, ultraviolet rays effective for the human body are blocked by the blocking means 105.

In this embodiment, as an example of the conversion means 131, a visible light conversion filter coated with a material for converting ultraviolet light into visible light is adopted. Further, the blocking means 105 has a configuration included (also used) in the cover means 103, but it does not have to be used in combination.

The ultraviolet rays output from the ultraviolet light emitting means 101 come into contact with the converting means 131 and are transmitted, so that only visible light can be transmitted. Further, all the light in the ultraviolet wavelength region harmful to the human body is cut by the blocking means 105, and the covering means 103 can radiate only visible light. That is, the ultraviolet irradiation device 100 can function as an illumination or a shining wall, and can provide a bright work environment with a high interior quality without a sense of discomfort even indoors.

FIG. 3B is a diagram showing an invalid state of the cover means 103, that is, a non-blocking state of ultraviolet rays. When the room S is unmanned, the conversion means 131 is retracted from the ultraviolet light emitting direction (front) of the ultraviolet light emitting means 101 (opening the front of the ultraviolet light emitting means 101) as shown in FIG. Then, the irradiation of the target area S with visible light is stopped. In this example, the cover means 103 always covers the front of the ultraviolet light emitting means 101, and even when the irradiation of visible light is stopped due to the evacuation of the conversion means 131, the ultraviolet rays harmful to the human body are covered by the cover means 103. It is blocked by (blocking means 105), and the target area S is not irradiated. As the switching method for opening and closing the cover means 103 in this case, the same configuration as the switching method for opening and closing the blocking means 105 of the first embodiment can be adopted.

When the blocking means 105 is not included in the covering means 103 and the conversion means 131 and the blocking means 105 are also used, the target is in the invalid state (retracted state) of the conversion means 131 shown in FIG. Since the region S is irradiated with harmful ultraviolet rays, for example, it is advisable to provide a motion sensor or the like to stop the light emission of the ultraviolet light emitting means 101 when a manned person is detected. As already described, the ultraviolet light emitting means 101 keeps the UV lamp LP lit at all times in normal operation, and the blocking means 105 can switch between the blocking state and the non-blocking state of the ultraviolet rays to the target region S. When a manned person is detected by a motion sensor or the like, the UV lamp LP is turned off with the highest priority given to safety.

As the opening / closing switching method of the conversion means 131, the same configuration as the opening / closing switching method of the blocking means 105 described in the first embodiment can be adopted. Further, the conversion means 131 may be always arranged in front of the ultraviolet light emitting means 101 without switching the opening and closing, and may be configured to always convert the ultraviolet light into visible light during the light emission of the ultraviolet light emitting means 101.

The switching of opening and closing of the conversion means 131 may be automatically controlled by, for example, a switching means (not shown), or may be manually controlled.

As described above, the ultraviolet irradiation device 100D according to the third embodiment sterilizes the air in the flow path composed of the cover means 103 and the ultraviolet light emitting means 101, and repeatedly takes in, sterilizes, and releases the air by natural convection. It can also be used as a flat lighting device that irradiates the room (target area S) with visible light that has become harmless to the human body while performing circulation sterilization.

In this example, as shown in FIG. 23, the case where the ultraviolet irradiation device 100D is immovably fixed to the wall surface or the like in the room is shown, but the present invention is not limited to this, and the ultraviolet light emitting means 101 is similar to the second embodiment. And the cover means 103 may be configured as a portable type that is integrally movable. Since the portable configuration is the same as that of the first embodiment, the description thereof will be omitted.

Further, the conversion means 131 is configured to also serve as the blocking means 105, the cover means 103 is integrally fixed to the ultraviolet light emitting means 101 and always covers the cover means 103, and the conversion means 131 is the cover means 103 (ultraviolet light emitting means 101). It may be configured to be relatively movable with respect to the opening and closing.

Note that FIG. 23 shows a state in which the cover means 103 and the ultraviolet light emitting means 101 are separated from each other to form the flow path 107. In this case, circulation sterilization is also possible via the flow path 107 in the state of blocking ultraviolet rays shown in FIG. However, the configuration may be such that the flow path 107 (a flow path capable of natural convection) is not formed. That is, the cover means 103 may not be provided, and the conversion means 131 and the blocking means 105 may be arranged to face the ultraviolet light emitting means 101. In this case, the conversion means 131 and the blocking means 105 may be arranged so as to always face the ultraviolet light emitting means 101 (relative movement is not possible), or the conversion means 131 and the blocking means 105 may be arranged so as to face the ultraviolet light emitting means 101. It may be configured to be relatively movable with respect to.

Further, FIG. 23 shows a state in which the ultraviolet irradiation device 100D is fixed to the wall surface or the like of the target area S (indoor), but the present invention is not limited to this, and the ultraviolet light emitting means 101 and the cover means 103 as in the second embodiment. And may be a portable type that can be moved integrally.

Hereinafter, an example of the ultraviolet irradiation system 200 of the present embodiment will be described.

24 and 25 are schematic views showing an example of the case where the ultraviolet irradiation device 100 of the present embodiment is provided on the wall surface of the room (target area S). FIG. 24 (A) is a front view, FIG. 24 (B) is a perspective view in a blocked state, and FIG. 25 is a perspective view in a non-blocked state.

As shown in FIG. 24 (A), the ultraviolet irradiation device 100 of this example is arranged on the entire wall surface of one room (target area S), and for example, the ultraviolet light emitting means 101, the cover means 103, and the upper louver (feathers). Plate) 111A, lower louver 111B, motion sensor 113, drive control means 119, and the like.

The ultraviolet light emitting means 101 is provided so as to be embedded in the wall surface, and the cover means 103 (front cover portion 103F) is arranged in front of the ultraviolet light emitting means 101 at a predetermined distance. The front cover portion 103F is provided, for example, in a sliding door (shoji) type that covers the ultraviolet light emitting means 101. In this example, two ultraviolet irradiation devices 100 are arranged side by side, and each ultraviolet irradiation device 100 is provided with two sliding door type cover means 103. The cover means 103 (front cover portion 103F) is configured to be slidable in the width direction H (left-right direction in the drawing) relative to the ultraviolet light emitting means 101.

In the ultraviolet irradiation device 100, the air flow path 107 may be configured by the cover means 103 and the ultraviolet light emitting means 101, and the side cover portion 103S in this example may also be used as a wall surface.

Further, in this example, the cover means 103 and the conversion means 131 are integrally provided, and the conversion means 131 also serves as the blocking means 105. That is, the conversion means 131 and the blocking means 105 are configured to be integrally openable and closable as the cover means 103 is opened and closed.

The conversion means 131 is, for example, a plate-shaped filter, and for example, the back surface of the UV cut filter (the surface irradiated with the ultraviolet rays emitted from the ultraviolet light emitting means 101) is converted into visible light. It is a visible light conversion filter coated with a material (fluorescent paint) for this purpose.

The cover means (front cover portion 103F) is configured to be capable of transmitting visible light, and the ultraviolet rays output from the ultraviolet light emitting means 101 come into contact with the conversion means 131 and are transmitted to the ultraviolet wavelength region harmful to the human body. All the light having a wavelength of 400 nm or less is cut by this filter plate and at the same time converted into visible light, and is irradiated to the front (indoor) as visible light only from the covering means 103. That is, the ultraviolet irradiation device 100 can function as an illumination or a shining wall, and can provide a bright work environment with a high interior quality without a sense of discomfort even indoors. The blocking means 105 and the converting means 131 may be configured separately.

In this case, in the ultraviolet blocking state, as shown on the left side of the figure (A), the two sliding door type covering means 103 (and the converting means 131) are closed to cover the front of the ultraviolet emitting means 101, and the ultraviolet rays are emitted. The light emitting means 101 is not exposed. As a result, the irradiation of the target region S (indoor) with the ultraviolet rays is blocked while the light emission from the ultraviolet light emitting means 101 is continued.

On the other hand, in the non-blocking state of ultraviolet rays, as shown on the right side of the figure (A), one of the sliding door type cover means 103 (and the conversion means 131) is opened so as to overlap the other, and the ultraviolet light emitting means 101 is exposed. It will be in the state of.

In this example, the cover means 103 stacked on top of each other covers the front of a part of the ultraviolet light emitting means 101 even in the non-blocking state, but in the non-blocking state, the ultraviolet light emitting means 101 Almost the entire surface may be exposed. For example, by providing storage areas for the cover means 103 on both outer sides (inside the wall surface, etc.) of the ultraviolet irradiation device 100 in the width direction H, or by making the cover means 103 foldable, substantially the entire surface of the ultraviolet light emitting means 101 can be covered. Can be exposed.

An air inlet IN is opened between the lower end of the front cover portion 103F and the floor surface, and the lower louver 111B is arranged in front of the air inlet IN. Similarly, an air outlet OUT is opened between the upper end portion of the front cover portion 103F and the ceiling, and the upper louver 111A is arranged in front of the air outlet OUT. It is preferable that the upper louver 111A and the lower louver 111B can be configured so that the angle of each louver (wing) can be changed (adjusted).

In this example, the upper louver 111A and the lower louver 111B may not be provided, and only the air inlet IN and the air outlet OUT may be provided.

The motion sensor 113 constantly detects whether the room is manned or unmanned, and transmits the detection result to the drive control means 109. Further, although not shown, the ultraviolet irradiation device 100 controls the power supply, the lighting / extinguishing of the ultraviolet light emitting means 101 (selective lighting / extinguishing of an arbitrary UV lamp LP), the ultraviolet irradiation intensity control, and the covering means 103. It has a controller (not shown) that can manually input signals such as opening / closing control of UV rays.

The drive control means 109 controls the power supply, the lighting / extinguishing of the ultraviolet light emitting means 101, the ultraviolet irradiation intensity control, the covering means 103 and / or cutoff based on the signals from the motion sensor 113 and the controller of the ultraviolet irradiation device 100. The opening / closing control of the means 105 is performed. As already described, the ultraviolet light emitting means 101 keeps the UV lamp LP lit at all times in normal operation, and the blocking means 105 can switch between the blocking state and the non-blocking state of the ultraviolet rays to the target region S. However, when the drive control means 109 detects a manned person by the motion sensor 113 or the like, the UV lamp LP is turned off (and / or the irradiation intensity of ultraviolet rays is reduced, or the blocking means 105 is given the highest priority on safety. Is closed).

In the blocking state shown on the left side of FIG. (A) and FIG. (B), the ultraviolet irradiation device 100 continues to emit light from the ultraviolet emitting means 101, but is harmful to the human body by the covering means 103 (blocking means 105). Irradiation of the target region S of ultraviolet rays is blocked. At the same time, the indoor air is taken into the flow path 107 from the lower louver 111B and irradiated with light by the ultraviolet light emitting means 101 to sterilize the air. The air in the flow path 107 is heated by the heat of the ultraviolet light emitting means 101 to generate natural convection, which is returned to the room as sterilized air from the upper louver 111A, and this is repeated (circulation sterilization). ..

Further, the conversion means 131 provided on the cover means 103 (front cover portion 103F) cuts at least a part of the ultraviolet wavelength (sterilization wavelength) output from the ultraviolet light emitting means 101 and converts it into visible light. To. As a result, when viewed from the outside (indoor) of the ultraviolet irradiation device 100, the entire surface of the cover means 103 (front cover portion 103F) can be used as illumination that emits visible light.

On the other hand, as shown in FIG. 25, in the non-blocking state of the ultraviolet irradiation device 100, the ultraviolet light in the sterilization wavelength region from the ultraviolet light emitting means 101 is in a state of peak output effective for sterilization by opening the cover means 103 (conversion means 131). The front (indoor) is instantly and widely irradiated. As a result, the light from the UV lamp LP, which has a high bactericidal effect, can be instantly and directly irradiated directly to the place where the adherent bacteria / airborne bacteria are present in the room to efficiently sterilize and purify.

Further, for example, as shown in FIG. 3B, when the motion sensor 113 detects a manned person in a non-blocking state, the drive control means 109 emits light from the ultraviolet light emitting means 101 or operates the ultraviolet irradiation device 100. To stop. Alternatively, when the motion sensor 113 detects a manned person in the non-blocking state, the drive control means 109 shifts to the blocking state in which the cover means 103 covers the ultraviolet light emitting means 101. As a result, it is possible to avoid irradiation with ultraviolet rays harmful to the human body.

Further, the cover means 103 may be manually opened and closed, in which case it is preferable to provide an open / close detection sensor for detecting the open / close of the cover means 103. The open / close detection sensor is interlocked with, for example, the motion sensor 113, and when the open / close detection sensor detects the opening of the cover means 103, the detection signal of the motion sensor 113 is transmitted to the drive control means 109, and the output of the ultraviolet light emitting means 101 is output. It is good to stop (turn off).

The cover means 103 may be fixed in front of the ultraviolet light emitting means 101 so as not to be movable, the conversion means 131 may be configured as a sliding door type, and the cover means 103 and the ultraviolet light emitting means 101 may be slidably movable. In this case, since the flow path 107 is formed in both the blocked state and the non-blocked state, circulation sterilization can be performed at all times.

Further, the cover means 103 (front cover portion 103F) or the conversion means 131 may be configured to slide up and down or to switch between opening and closing as in the blocking means 105 of the first embodiment.

Further, it is advisable to incorporate a lighting control timer on the UV lamp lighting circuit of the drive control means 109. As a result, the power is stopped when the operation is performed for an arbitrarily set time, the arbitrary UV lamp LP is selectively turned on / off, or when the operation becomes unmanned after the operation for a predetermined time (after sterilization treatment). It is possible to automate the operation, and it can be used for sterilizing the indoor space with ultraviolet rays and for lighting at the required place and at the required time.

Further, for example, a filter having a design (picture or pattern) rich in design may be laminated on the surface of the conversion means (visible light conversion filter) 131. This makes it possible to provide a lighting device that provides healing and leisure while performing space sterilization in medical and nursing facilities, commercial facilities, and the like.

FIG. 26 is a schematic view showing another example of the case where the ultraviolet irradiation device 100D of the present embodiment is configured to be self-supporting and portable. FIG. 26 (A) is a perspective view in a blocked state, and FIGS. (B) and FIG. 26 (C) are perspective views in a non-blocked state.

The ultraviolet irradiation device 10 is an impulsive type (self-supporting type) similar to the ultraviolet irradiation device 10 described with reference to FIG. 9, but for example, the cover means 103 is configured to include the blocking means 105, and the cover means 103 ( And the blocking means 105) is configured to be movable (open / close) relative to the ultraviolet emitting means 101. Further, the conversion means 131 may be provided in this configuration. Further, the conversion means 131 may also serve as the blocking means 105.

In the cutoff state shown in FIG. 3A, the ultraviolet irradiation device 100 is subjected to circulation sterilization that sterilizes the air in the flow path 107 as in the first embodiment.

Further, when the cover means 103 (front cover portion 103F) is provided with the conversion means 131, the light having the ultraviolet wavelength output from the ultraviolet light emitting means 101 is converted into visible light. As a result, when viewed from the outside (indoor) of the ultraviolet irradiation device 100, the entire surface of the cover means 103 (front cover portion 103F) can be used as illumination that emits visible light.

On the other hand, as shown in FIG. 3B, in the non-blocking state of the ultraviolet irradiation device 100, the cover means 103 slides to the left and right in the width direction H, and the ultraviolet light emitting means 101 is exposed. As a result, the ultraviolet light emitting means 101 irradiates the front (indoor) with ultraviolet rays in the sterilization wavelength region.

The cover means 103 may be fixed to the ultraviolet light emitting means 101 to cover the cover means 103 in the non-blocking state. Further, the blocking means 105 (converting means 131) may be configured to slide left and right (or up and down) relative to the ultraviolet light emitting means 101 and the cover means 103. The method of switching between the blocked state and the non-blocked state (the method of moving the cover means 103 (blocking means 105, conversion means 131)) is not limited to the one shown in the drawing, and various aspects described above can be adopted.

Further, also in this case, as shown in FIG. 6C, a motion sensor 113 is provided to detect manned and unmanned, and when manned is detected, the drive control means 109 stops the light emission of the ultraviolet light emitting means 101 ( It should be turned off). Alternatively, when the motion sensor 113 detects a manned person in the non-blocking state, the drive control means 109 may shift to the blocking state in which the cover means 103 covers the ultraviolet light emitting means 101.

Further, the cover means 103 may be manually opened and closed, in which case it is preferable to provide an open / close detection sensor for detecting the open / close of the cover means 103. That is, when the open / close detection sensor detects the opening of the cover means 103, the signal is transmitted to the drive control means 109, and the output of the ultraviolet light emitting means 101 may be stopped (turned off).

<Fourth Embodiment>
A fourth embodiment of the present invention will be described with reference to FIG. 27. FIG. 27 (A) is a side view showing an outline of the ultraviolet irradiation system 200 of the fourth embodiment, and FIG. 27 (B) is a side view showing an outline of the ultraviolet irradiation device 100 (100E).

The ultraviolet irradiation device 100 is, for example, an imposition type similar to that of the first embodiment, but here, as an example, a configuration without a cover means 103 and a blocking means 105 is shown. That is, the ultraviolet irradiation device 100 in this case can switch between irradiation of ultraviolet rays and non-irradiation (non-irradiation by extinguishing the ultraviolet light emitting means 101), and particularly when the target area S is unmanned, it is directly directed to the target area S. It is a UV direct irradiation type device that irradiates ultraviolet rays. The timing and irradiation time of ultraviolet irradiation and non-irradiation are controlled by, for example, a drive control means 109 or a motion sensor (not shown).

The ultraviolet irradiation system 200 of this example includes a bug filter 300 that is separate from the UV direct irradiation type ultraviolet irradiation device 100. The bug filter 300 is provided, for example, near the ceiling of the target area (inside the room) S, and is provided at one end (outlet end) of a flow path (duct) 130 through which air can flow in and out. For example, a fan (circulator) (not shown) is provided at the inlet end of the duct 130 so that air in the target area S (indoor) flows in. The bug filter removes at least physical particles contained in the air flowing into the duct 130 and discharges them to the target region S. Further, the physical particles are, for example, suspended particles, dead bacteria and pyrogens adsorbed on the suspended particles, and other dust and dirt, and the bug filter 300 of the present embodiment captures and removes these. Use one that has the possible level of performance. More specifically, as an example of the bug filter 300, it is assumed that it has a performance higher than that of a medium-performance air filter capable of capturing about 95% of particles larger than 1 μm.

In this ultraviolet irradiation system 200, the target area S is sterilized by ultraviolet light from the ultraviolet irradiation device 100, especially when there is no person. Further, the air in the target area S mainly circulates in the target area S, and the physical bug is removed by the bug filter 300. Thereby, for example, it can be realized in a simpler and lower cost than the system including the exhaust means 181 (and the air supply (intake) means 182) described with reference to FIG. For example, it is suitable when it is desired to temporarily and urgently clean the target area S (for example, a rescue tent) without a sterilization (purification) system. Further, since the air circulates in the target area S, the risk of contaminated air leaking to the outside can be minimized.

In the figure (A), the ultraviolet irradiation device 100 may have a cover means 103 that is arranged to face the ultraviolet light emitting means 101 and forms a flow path 107 with the ultraviolet light emitting means 101. In this case, for example, the cover means 103 may not have the blocking means 105, and may be configured to allow circulation sterilization in the flow path 107 of the ultraviolet irradiation device 100 in addition to the direct irradiation of ultraviolet rays.

FIG. 3B is a side view showing another example of the ultraviolet irradiation device 100 (100E). The ultraviolet irradiation device 100E is, for example, an imposition type, and may be integrally provided with a bug filter 300. In this example, the ultraviolet irradiation device 100 includes a cover means 103 that forms a flow path 107 with the ultraviolet light emitting means 101, and the bag filter 300 is attached to the outlet of the flow path 107, that is, at the upper part of the ultraviolet irradiation device 100, for example. Be done.

When the ultraviolet irradiation device 100E is not in use (when it is off), the bag filter 300 can be accommodated on, for example, the back surface (the back surface of the ultraviolet light emitting means 101) as shown by the broken line, and when the ultraviolet irradiation device 100E is operating. , The sterilized air passing through the flow path 107 is sucked in, the physical bug is removed, and the clean air is discharged to the target region S.

The ultraviolet irradiation device 100E is, for example, a UV direct irradiation type device that has a covering means 103 but no blocking means 105, and particularly irradiates the target area S with ultraviolet rays directly when the target area S is unmanned. is there. It is not necessary to provide the cover means 103.

Further, for example, it is preferable to provide a fan (circulator or the like) 302 that further promotes the intake or discharge of air into the flow path 107.

Although the ultraviolet irradiation device 100 (100E) shown in FIG. 27 does not include the blocking means 105, a state switching means (not shown) capable of changing the emission state of the ultraviolet light emitting means 101 may be provided. The state switching means is, for example, a direction changing means capable of changing the irradiation direction and irradiation amount of ultraviolet rays in front of the ultraviolet light emitting means 101. The direction changing means is, for example, a louver or an opening / closing window.

The state switching means (direction changing means) may have a configuration capable of blocking at least a part of ultraviolet rays, and in that sense, the blocking means 105 is also included in the state switching means.

Further, the ultraviolet irradiation device 100 is not limited to the stationary type (self-supporting type), but may be a tower type or a self-propelled type.

<Fifth Embodiment>
The ultraviolet irradiation device 100 (100F, 100G) and the ultraviolet irradiation system 200 (200F) according to the fifth embodiment of the present invention will be described with reference to FIGS. 28 and 29.

FIG. 28 is a schematic view of the ultraviolet irradiation system 200 (200F). FIG. (A) is an overall schematic view of the ultraviolet irradiation system 200 (200F), and FIG. (B) is an external view showing an example of the configuration of the first ultraviolet irradiation device 100F, FIG. FIG. (D) is an external view showing an example of the configuration of the second ultraviolet irradiation device 100G, and FIG. (E) is an external view showing a modified example of the second ultraviolet irradiation device 100G.

As shown in FIG. 6A, the ultraviolet irradiation system 200 (200F) includes a first ultraviolet irradiation device 100F capable of outputting ultraviolet rays including a predetermined main wavelength with respect to the target region S, and air in the target region S. It has a flow path 107G through which the ultraviolet rays pass, and a second ultraviolet irradiation device 100G provided separately from the first ultraviolet irradiation device 100F.

As shown in FIG. 3B, the first ultraviolet irradiation device 100F has a first ultraviolet light emitting means 101F. The first ultraviolet light emitting means 101F is, for example, a straight tube type low-pressure mercury lamp LP similar to the first embodiment, and is attached to the base material B (support portion) so as to be in an upright state in the longitudinal direction. The base material B has, for example, a substantially semi-cylindrical shape that covers from the back surface portion to the side surface portion of the first ultraviolet light emitting means 101F, and the leg portion 123 is attached to the base material B. That is, the first ultraviolet irradiation device 100F is configured to be self-supporting and movable.

The first ultraviolet irradiation device 100F has a state switching means 225 that can change the emission state of ultraviolet rays by covering at least a part of the first ultraviolet light emitting means 101F. In this example, the state switching means 225 is a movable body that can move relative to the first ultraviolet light emitting means 101F. Specifically, for example, a door member that can be opened and closed, a shade (louver) that can adjust the angle, and the like. is there. The state switching means (movable body) 225 can adjust the emission direction and emission angle (angle of the emission region) of ultraviolet rays by moving (opening and closing) with respect to the first ultraviolet light emitting means 101F. By closing the state switching means 225, for example, the first ultraviolet light emitting means 101F, the side surface portion and the front surface portion thereof are covered with, for example, a substantially semi-cylindrical shape. Further, by opening (opening) the state switching means 225, the side surface portion and the front surface portion of the first ultraviolet light emitting means 101F are partially exposed according to the degree (opening angle). In the portion covered with the state switching means 225, the emission direction and the emission amount of ultraviolet rays are regulated, and ultraviolet rays are emitted from the opening (open) portion. The state switching means 225 is not limited to the illustrated example as long as the state of emitting ultraviolet rays can be changed.

The first ultraviolet irradiation device 100F of the present embodiment operates, for example, when the target area S is unmanned, and after the power is turned on, the first ultraviolet light emitting means 101F constantly emits light, and the target area S. Ultraviolet rays can be directly irradiated to S. The irradiation direction and irradiation amount of ultraviolet rays can be controlled by the state switching means 225. That is, the state switching means 225 can be said to be the blocking means 105 in the direction in which the emission of ultraviolet rays is restricted. In this example, the state switching means 225 is configured so that the irradiation direction and / or irradiation angle of ultraviolet rays can be arbitrarily set and adjusted. As an example, the state switching means 225 is provided with an ultraviolet reflecting means 250 on its inner surface (the inner surface is a mirror surface 250A).

The first ultraviolet irradiation device 100F is configured to independently irradiate ultraviolet rays only in a specific direction of the target area S, and the ultraviolet irradiation system 200F has at least one first ultraviolet irradiation device 100F in a certain target area S. Deploy. More preferably, the ultraviolet irradiation system 200F arranges a plurality of first ultraviolet irradiation devices 100F in a certain target area S in a dispersed manner (separated from each other). When a plurality of first ultraviolet irradiation devices 100F are arranged, the irradiation of each ultraviolet ray is not blocked by obstacles, and the target area S from multiple directions, particularly the area where the ultraviolet ray is to be irradiated (for example, the position of the patient's bed). Etc.), and the position of the first ultraviolet irradiation device 100F and the mode of each state switching means 225 are appropriately adjusted.

In the figure (A), as an example, four first ultraviolet irradiation devices 100F are arranged at four corners of a substantially rectangular target area S (for example, indoors). The first ultraviolet irradiation device 100F has a slim and lightweight configuration in which, for example, one straight tube type low-pressure mercury lamp LP is supported in an upright state (vertical type). Therefore, the arrangement can be easily changed, and even when a plurality of units are distributed and arranged, they can be arranged in a small space without getting in the way. Further, it is preferable to provide a handle 129 or the like because the handleability is improved. It is even better to provide a fall prevention means.

In this example, the case where the first ultraviolet light emitting means 101F is composed of one low-pressure mercury lamp LP is illustrated. For example, a plurality of low-pressure mercury lamp LPs are arranged so that their longitudinal directions are aligned on a straight line. You may. Further, in the case of UV-LED which is a point light source, a plurality of (point light sources) may be arranged linearly.

Further, the first ultraviolet irradiation device 100F has a communication means 126 and various sensors. The various sensors include a motion sensor 128 that detects that the target area S is manned, and the state of another first ultraviolet irradiation device 100F arranged in the same target area S (for example, the emission direction of ultraviolet rays). At least the state detection sensor 127 to detect is included.

Further, although not shown, the first ultraviolet irradiation device 100F is also provided with operating means (touch panel, operation buttons, etc.), a timer, and the like. Further, a fan or the like for circulating air may be provided. Further, the first ultraviolet irradiation device 100 is not limited to the stationary type as shown in the figure, and may be a self-propelled type.

The ultraviolet irradiation system 200F further has a second ultraviolet irradiation device 100G (Fig. (A)). With reference to FIGS. (C) and (D), the second ultraviolet irradiation device 100G is provided separately from the flow path 137 through which the air in the target region S passes and the first ultraviolet light emitting means 101F. It has a second ultraviolet light emitting means 101G capable of outputting ultraviolet rays including a predetermined main wavelength to air passing through the flow path 137. The second ultraviolet light emitting means 101G is, for example, a straight tube type low pressure mercury lamp LP similar to the first embodiment. That is, the second ultraviolet irradiation device 100G is separate from the first ultraviolet irradiation device 100F, and in this example, it is installed near the ceiling of the target area S.

As an example, the second ultraviolet irradiation device 100G has a tubular flow path 137 containing (for example, one) second ultraviolet light emitting means 101G. For example, the second ultraviolet light emitting means 101G constantly irradiates ultraviolet rays when the second ultraviolet irradiation device 100G is in operation (when the power is turned on). The flow path 137 is made of, for example, a material that blocks the ultraviolet rays from leaking to the outside at all times.

For example, a fan 302 is provided at one end (inflow port IN) of the flow path 137, and a bug filter 300 is provided at the other end (outlet outlet). Air in the target region S flows in the flow path 137 from the inflow port IN to the outflow port OUT in the direction of the arrow in the figure (D). Then, in the middle of the distribution, the bacteria contained in the air are inactivated by irradiating the ultraviolet rays from the second ultraviolet light emitting means 101G. In addition, the bug filter 300 captures physical particles and expels clean air. That is, the second ultraviolet irradiation device 100G functions in the same manner as the flow path 107 of the first embodiment, and performs circulation sterilization that sucks contaminated air, purifies it, and discharges it. The bug filter 300 is the same as that described in the fourth embodiment, and has a performance higher than that of the medium performance air filter. However, in the present embodiment, circulation sterilization is performed in which the airborne bacteria are inactivated by ultraviolet rays while passing air through the flow path 137. Therefore, in order to efficiently perform circulation sterilization, it is desirable that the filter has a mesh size that does not hinder the flow of air (low pressure loss), and is appropriately selected in balance with cleanliness. Further, the filter material may be mixed with, adhered to or filled with a material having a catalytic effect of decomposition of organic substances by light (for example, copper, silver, titanium oxide, etc.).

As shown in FIG. 6C, one end (inlet end) of the flow path 137 is connected to, for example, one end of the duct 130. It is preferable that the second ultraviolet irradiation device 100G is provided near the ceiling in the center of the target area S, for example, because clean air is supplied to the entire target area S. On the other hand, it is desirable that the air pollution degree is highest around the patient (for example, near the bed), and the polluted air is not diffused so much. Therefore, for example, an intake port 132 with a fan is provided near the patient (for example, near the head of the bed), and the intake port 132 and the second ultraviolet irradiation device 100G are connected by a duct 130. As a result, the contaminated air in the vicinity of the patient is sucked in through the intake port 132 and the duct 130, and is cleaned and discharged in the second ultraviolet irradiation device 100G near the ceiling. As a result, normal air can be evenly diffused in the target region S, and circulation sterilization can be performed efficiently.

As described above, the ultraviolet irradiation system 200F of the present embodiment has the first ultraviolet irradiation device 100F that directly irradiates the target region S with ultraviolet rays, and the (contaminated) air passing through the flow path 137. It is used in combination with a second ultraviolet irradiation device 100G that irradiates and purifies ultraviolet rays. Hereinafter, a device that directly irradiates the target area S with ultraviolet rays (here, the first ultraviolet irradiation device 100F) is referred to as a direct irradiation type (direct sterilization type) ultraviolet irradiation device, and is contained in the flow path 137 (contamination). An indirect irradiation type (joint sterilization type) ultraviolet irradiation device may be used to refer to a device that takes in (the) air, irradiates it with ultraviolet rays, purifies it, and discharges it, that is, circulates sterilization (here, the second ultraviolet irradiation device 100G). is there.

An example of the operation of the ultraviolet irradiation system 200F will be described. The first ultraviolet irradiation device (direct irradiation type ultraviolet irradiation device) 100F operates in principle when the target area S is unmanned, and efficiently sterilizes the target area S. For example, if the target area S is a room in a ward, it is possible to directly irradiate ultraviolet rays after discharge, or if it is an operating room, before and after surgery (for example, 30 minutes in time). Efficient sterilization in a short time. There is a predetermined correlation between the bactericidal effect (curve showing survival rate) of bacteria (adherent bacteria, airborne bacteria, etc.) in the target area S and the illuminance of ultraviolet rays (cumulative illuminance), and the bacteria in the target area S are predetermined. Direct irradiation is stopped when the cumulative illuminance drops to the level of.

The first ultraviolet irradiation device 100F stops its operation when the presence of a person is detected by the motion sensor 128. Further, each first ultraviolet irradiation device 100F has at least an ultraviolet light receiving sensor as a state detection sensor 127. The light receiving sensor 127 detects the state of ultraviolet rays reaching itself from the first ultraviolet irradiation device 100F other than itself, and feeds it back to the drive control means 109 via the communication means 126 or the like.

Although the first ultraviolet irradiation device 100F of this example does not have the flow path 107, the flow path 107 may be formed by the cover means 103 as in the first embodiment (also used as an indirect irradiation type ultraviolet irradiation device). May be). However, the first ultraviolet irradiation device 100F of the present embodiment can be easily moved to an arbitrary position by having a lightweight, slim, and simple configuration. Therefore, the first ultraviolet irradiation device 100F may not be provided with the covering means 103 or the like, and may have the minimum necessary configuration as a direct irradiation type ultraviolet irradiation device as shown in FIG. One first ultraviolet irradiation device 100F has, for example, a weight and size that can be easily carried even by a weak adult (for example, an old man or a woman) and a handle 129 that facilitates handling. desirable.

The second ultraviolet irradiation device (indirect irradiation type ultraviolet irradiation device) 100G is not limited to the unmanned / manned target area S, and always operates independently of the first ultraviolet irradiation device 100F to purify the air in the target area S. Perform circulation sterilization. That is, at the same time as the operation of the first ultraviolet irradiation device 100F is started, the second ultraviolet irradiation device 100G is also started to operate, the cumulative illuminance from the first ultraviolet irradiation device 100F reaches a predetermined value, and the first ultraviolet irradiation device 100F operates. Even after the stop, the operation of the second ultraviolet irradiation device 100G is continued.

For example, if there is an inpatient in a ward or the like, or if the target area S is manned such as in an operating room during surgery and the first ultraviolet irradiation device 100F is inoperable, the patient can be affected by the second ultraviolet irradiation device 100G. It is possible to efficiently remove the bacteria contained in the exhaled breath, the bacteria adsorbed on the mist generated by the surgeon, and the airborne bacteria attached to the workers who enter and leave the room.

Note that the flow path 137 of the second ultraviolet irradiation device 100G may be configured so that the surface facing the target area S can be opened, and in the case of an unmanned person, the target area S may be directly irradiated with ultraviolet rays.

Further, the bug filter 300 of the second ultraviolet irradiation device 100G can be accommodated between the second ultraviolet irradiation device 100G and the ceiling (especially when not in use), as shown by a broken line in FIG. 27 (B). May be good. Further, although it is not necessary to provide the bug filter 300, it is preferable to provide the bug filter 300 because the sterilizing ability is enhanced. The second ultraviolet irradiation device 100G may be configured so that its installation position can be moved by, for example, expansion and contraction or deformation of the duct 130. Further, a plurality of second ultraviolet irradiation devices 100G may be provided. Further, the positions of the second ultraviolet irradiation device 100G and / or the intake port 132 may be changed by expanding / contracting or deforming the duct 130. By doing so, it is possible to create a desirable circulation sterilization air flow in the target region S by expanding and contracting and deforming the duct 130.

Further, as shown in FIG. 3E, the second ultraviolet irradiation device 100G is configured to be self-supporting (portable) by providing a leg portion 223 like the first ultraviolet irradiation device 100F, and the intake port 132 and the like. Contaminated air may be sucked in directly from the inlet IN and discharged from the outlet OUT through the bag filter 300 without passing through the duct 130. By doing so, it can be placed and moved on a floor surface or the like near the patient. Further, the second ultraviolet irradiation device 100G may be self-propelled.

A second ultraviolet irradiation device 100G may be provided instead of (or in addition to) the flow path (duct) 130 (and the bug filter 300) shown in FIG. 27 (A) of the fourth embodiment.

The irradiation state estimation means 202 in the ultraviolet irradiation system 200F will be described with reference to FIG. 29. FIG. (A) is a schematic block diagram showing a part of the system configuration of the ultraviolet irradiation system 200F (mainly the irradiation state estimation means 202) extracted, and FIG. 3B is a schematic top view of the ultraviolet irradiation system 200F. , FIG. 3B is an example of displaying the estimation result of the irradiation state estimation means 202.

With reference to FIG. 6A, the ultraviolet irradiation system 200F has an information processing device 201 that controls the system in an integrated manner. The information processing device 201 is, for example, a personal computer (PC) or a mobile terminal (smartphone, tablet terminal, etc.). In the information processing device 201, the drive control means 109 controls the drive of the first ultraviolet irradiation device 100F and the second ultraviolet irradiation device 100G via the communication means 126 or the like. Further, the detection results of the motion sensor 128 and the state detection sensor 127 of the first ultraviolet irradiation device 100F are fed back to various controls by the drive control means 109. Here, the drive control means 109 may have a part or all of the functions of the drive control means 109 built in each ultraviolet irradiation device 100F, which illustrates the case where the drive control means 109 is included in the information processing device 201.

The ultraviolet irradiation system 200F includes an irradiation state estimation means 202 that estimates the degree of cleanliness in the target area S based on the irradiation state of ultraviolet rays output from the first ultraviolet irradiation device 100F. The irradiation state estimation means 202 cooperates with the state detection sensor (light receiving sensor) 127 and the drive control means 109 to objectively recognize (visually recognize) the irradiation state of invisible ultraviolet light, for example, ultraviolet rays. This is a function built into the information processing device 201 of the irradiation system 200F in terms of hardware and / or software.

As already described, in the ultraviolet irradiation system 200F, a plurality of (for example, at least three) first ultraviolet light emitting devices (direct irradiation type ultraviolet irradiation devices) 100F are arranged in one target area S. Each of the plurality of first ultraviolet light emitting devices 100F is a state detection sensor capable of detecting ultraviolet rays (for example, detecting illuminance) emitted by at least one other (corresponding) other first ultraviolet light emitting device 100F. It has (light receiving sensor) 127 and communication means 126 capable of transmitting and receiving the detection result of the light receiving sensor 127. It also has an illuminometer (not shown).

The detection result of the light receiving sensor 127 is transmitted to the drive control means 109 (irradiation state estimation means 202) via the communication means 126 means. From the detection result of each first ultraviolet light emitting device 100F by the irradiation state estimation means 202, the drive control means 109 has the highest degree of contamination in the target area S and is required to have a reliable and high level of sterilization (area of interest). The illuminance of ultraviolet rays with respect to S0) is estimated, visualized (visualized), and output to the output means 203 of the information processing apparatus 201. The output means 203 is a display means as an example.

For example, as shown in FIG. 3B, a certain first ultraviolet irradiation device 100F and another first ultraviolet irradiation device 100F are arranged on the diagonal line of the target region S, and ultraviolet rays are emitted in their own directions. In the case where it is configured to be irradiated, if the light receiving sensor 127 of one first ultraviolet irradiation device 100F cannot detect the irradiation of ultraviolet rays, the other first ultraviolet irradiation device 100F is not irradiated or is not irradiated. It is suspected that the irradiation direction is extremely inappropriate, or that an ultraviolet non-reachable region is generated due to the presence of obstacles or the like. The irradiation state estimation means 202 appropriately grasps (monitors) the ultraviolet irradiation state of each first ultraviolet irradiation device 100F from the detection result of the light receiving sensor 127, and estimates the current irradiation state. The irradiation state estimation means 202 also visualizes the estimation result as shown in FIG. 3C, for example, and outputs the estimation result to the display means 203. In addition to the display by the display means 203, an output (notification) by voice or the like may be used (instead of). Further, the irradiation state estimation means 202 records the estimation result in the predetermined storage means 204.

FIGS. (C) and (D) are examples of the current irradiation state estimated by the irradiation state estimation means 202 and displayed on the display means 203. Here, it is an estimation example of the irradiation state when four first ultraviolet irradiation devices 100F are arranged at the four corners of the rectangular target area S. For example, each of the first ultraviolet irradiation devices 100F is a first ultraviolet light emitting means. It is assumed that the irradiation is set at an irradiation angle of 90 degrees around 101F. In the figure, the hatching shows the area irradiated with ultraviolet rays, which is an effective area. Further, the overlapping portion of the hatching (here, the central region) is the region where the illuminance is estimated to be the highest due to the overlapping of ultraviolet rays. The irradiation state estimating means 202 displays, for example, a region estimated to have the highest illuminance due to the overlap of ultraviolet rays (a region where hatching overlaps) by changing the display mode thereof from the effective area.

Further, as shown in FIG. 6D, it is desirable to visualize the effective area and the ultraviolet non-reachable area such as behind the equipment EQ as different display modes. In this example, the effective area is indicated by a broken line, and the ultraviolet non-reachable area is indicated by a cross as a "check area required".

In this case, if the irradiation state estimating means 202 can detect the illuminance (intensity) of the ultraviolet rays emitted from three or more points (at least three units), the degree of attenuation due to the distance of the ultraviolet rays and the spread of irradiation (state switching means). The illuminance (irradiation intensity) can be estimated from the degree of attenuation (spreading due to the opening angle of 225).

Further, the irradiation state estimation means 202 calculates the irradiation conditions (irradiation angle, irradiation direction (irradiation position), illuminance, etc.) of the first ultraviolet irradiation device 100F, respectively, so that appropriate irradiation is performed according to the estimation result. The drive control means 109 controls to automatically adjust the ultraviolet irradiation state of each first ultraviolet irradiation device 100F based on the calculated irradiation conditions.

In the present embodiment, the first ultraviolet irradiation device 100F that strongly directly irradiates the target region S with ultraviolet rays is made smaller and lighter, and a plurality of first ultraviolet irradiation devices 100F can be dispersed and arranged at arbitrary positions. The degree of freedom can be increased. Further, since the plurality of first ultraviolet irradiation devices 100F can mutually detect the irradiation state of ultraviolet rays and feed back to the drive control means 109 to control the irradiation state, the region not irradiated with ultraviolet rays can be reduced as much as possible. , It becomes possible to irradiate the region (region of interest S0) with the highest pollution state in the target region S with ultraviolet rays from substantially all directions. This enables efficient sterilization treatment. In addition, in order to maintain an appropriate state as the target area S and the area of interest S0, the drive control means 109 has a configuration in which the irradiation conditions of ultraviolet rays by the plurality of first ultraviolet irradiation devices 100F can be individually (independently) controlled. It is good to set it to.

Further, since the irradiation state can be visualized, it becomes easy to grasp the degree of irradiation in the target area S (particularly the area of interest S0). By visualizing the irradiation state, for example, based on the degree of overlap of the ultraviolet irradiation regions, the illuminance at least in the region of interest S0 satisfies the reference value (value required for sterilization management) capable of effective sterilization (and (Estimated) etc. can be easily grasped. This makes it possible to increase the reliability of the ultraviolet irradiation system 200F.

Further, for example, the position itself of the first ultraviolet irradiation device 100F becomes unfavorable due to the occurrence of an unintended obstacle, and the improvement is insufficient by the automatic control of the irradiation state by the drive control means 109. It is also possible to manually move the first ultraviolet irradiation device 100F to an appropriate position based on the irradiation state (the operation of the first ultraviolet irradiation device 100F is stopped).

FIG. 30 is a schematic diagram illustrating another example of the fifth embodiment. As shown in the figure, the surrounding means 260 may be arranged in the target area S. The surrounding means 260 is, for example, a booth, a tent, a capsule, or the like, and is configured to be able to three-dimensionally cover a predetermined space except for the intake unit 260I and the exhaust unit 260O. In this example, the intake unit 260I is provided at the lower end of the surrounding means 260. Further, the intake port 132 connected to the second ultraviolet irradiation device 100G and a part of the duct 130 connected to the intake port 132 are inside the surrounding means 260, and the rest of the duct 130 and the second ultraviolet irradiation device 100G are outside the surrounding means 260. It is in. That is, in this example, the intake port 132, the duct 130, and the second ultraviolet irradiation device 100G serve as an exhaust unit 260O that discharges the contaminated air in the surrounding means 260 to the outside of the surrounding means 260. By appropriately adjusting the inflow amount from the intake unit 260I and the exhaust amount from the exhaust unit 260O, the inside of the surrounding means 260 can be controlled to a negative pressure or a positive pressure.

In this configuration, for example, the siege means 260 may be composed of a material that blocks ultraviolet rays radiated from the first ultraviolet irradiation device 100F toward the siege means 260 so as not to pass through the inside of the siege means 260. For example, if the patient needs to be managed under negative or positive pressure, it is housed inside the siege means 260. The air in the surrounding means 260 is taken in from the intake unit 260I, sterilized and purified through the intake port 132, the duct 130, and the second ultraviolet irradiation device 100G, and discharged to the outside. On the other hand, the area outside the siege means 260, which is the flow line of the medical staff, also needs to be sterilized, but in general, the unmanned time is longer than the manned time. That is, the patient is housed inside the siege means 260 by forming the siege means 260 with an ultraviolet blocking material or by superimposing the siege means 260 on the blocking means 105 of the above-described embodiment (for example, a blocking means that constantly blocks ultraviolet rays). The outside of the siege means 260, which is a movement line during unmanned hours, can be efficiently sterilized by direct irradiation of ultraviolet rays from the first ultraviolet irradiation device 100F.

Further, the surrounding means 260 may be provided with a blocking means 105 capable of switching between a blocking state and a non-blocking state of ultraviolet rays (overlapping). When the patient is being accommodated, the ultraviolet rays are blocked, and when the patient is replaced, the ultraviolet rays are not blocked. As a result, in the non-blocking state, the ultraviolet rays directly irradiated from the first ultraviolet irradiation device 100F can be transmitted to the inside of the surrounding means 260, and the inside of the surrounding means 260 can also be sterilized more efficiently.

If the inside of the siege means 260 is unmanned, the first ultraviolet irradiation device 100F may be moved inside the siege means 260 to sterilize it.

Negative pressure or positive pressure of the target area S may be controlled without providing the siege means 260. That is, when the target area S is indoors or the like, the intake unit 260I is provided in a part of the target area S. The intake port 132 and a part of the duct 130 connected to the intake port 132 are arranged in the target area S, and the rest of the duct 130 and the second ultraviolet irradiation device 100G are arranged outside the target area S. By controlling the inflow amount of air from the intake unit 260I and the exhaust amount from the second ultraviolet irradiation device 100G serving as the exhaust unit 260O, the entire target region S can be controlled to negative pressure or positive pressure.

Since adherent bacteria are difficult to move, direct irradiation can be used for efficient sterilization in a short time as long as the area where ultraviolet rays do not reach (non-irradiation) is not generated. On the other hand, since airborne bacteria move, it is difficult to sterilize them with a conventionally known self-propelled (robot type) direct irradiation type ultraviolet irradiation device or the like. Circulation sterilization by indirect irradiation of the present embodiment is effective for such airborne bacteria. In circulation sterilization, the larger the flow rate of the circulating air, the higher the sterilization effect. Therefore, it is desirable to increase the amount of air taken into the indirect irradiation type ultraviolet irradiation device as much as possible. However, when the amount of air taken in is increased in the ultraviolet irradiation device device in which the direct irradiation type ultraviolet irradiation device and the indirect irradiation type ultraviolet irradiation device are integrated, for example, as described in the first embodiment, the direct irradiation type ultraviolet device The size of the product is also simply increased. Further, in the case of, for example, an imposition type ultraviolet irradiation device 100 as in the first embodiment, the direction of direct irradiation is limited to substantially one direction (direction perpendicular to the surface of the opposition). That is, in order to eliminate the region not irradiated with ultraviolet rays as much as possible, irradiation from multiple directions is desirable, and the efficiency is deteriorated as direct irradiation.

Therefore, in the present embodiment, the direct irradiation type ultraviolet irradiation device and the indirect irradiation type ultraviolet irradiation device are separated, and the configuration is suitable for each irradiation method. In particular, by arranging a plurality of direct irradiation type ultraviolet irradiation devices (first ultraviolet irradiation device 100F) dispersed in the target region S, the region not irradiated with ultraviolet rays can be reduced as much as possible.

Further, by separating the first ultraviolet irradiation device 100F and the second ultraviolet irradiation device 100G, the flow rate of air for circulation sterilization can be increased particularly in the second ultraviolet irradiation device 100G. That is, since the flow rate of the circulating air can be increased without the restriction of the direct irradiation type ultraviolet irradiation device (first ultraviolet irradiation device 100F), the effect of circulation sterilization can be enhanced, and the ability to suppress airborne bacteria is enhanced. be able to.

Further, the second ultraviolet irradiation device 100G provided with the duct 130 can easily manage the positive pressure or the negative pressure in the target area S or the surrounding means 260.

In the case of a configuration in which the duct 130 is provided, the second ultraviolet light emitting means 101G may be provided in the duct 130. Long-term sterilization is possible in the long air flow path 137.

<Sixth Embodiment>
The ultraviolet irradiation device 100 (100H, 100g) and the ultraviolet irradiation system 200 (200H) according to the sixth embodiment of the present invention will be described with reference to FIG. 31. FIG. 31 is a schematic diagram showing an example of the ultraviolet irradiation system 200 (200H), FIG. 31A is a schematic diagram of the entire ultraviolet irradiation system 200 (200H), and FIG. 31B is an ultraviolet irradiation device 100 (B). A schematic diagram of 100H), FIG. 6C is a block diagram of an ultraviolet irradiation system 200 (200H), and FIG. 6D is a schematic diagram illustrating a part of the functions of the sixth embodiment.

The sixth embodiment is also an ultraviolet irradiation system 200 (200H) in which a direct irradiation type ultraviolet irradiation device (first ultraviolet irradiation device 100H) and an indirect irradiation type ultraviolet irradiation device (second ultraviolet irradiation device 100G) are used in combination. The difference from the fifth embodiment is that the first ultraviolet irradiation device 100H, which is a direct irradiation type ultraviolet irradiation device, is above the target area S (for example, the top surface (ceiling) SR of the target area S (indoor) or the upper part of the wall surface). Etc.). By providing the first ultraviolet irradiation device 100H above the target area S, it is possible to further reduce the area not irradiated with ultraviolet rays as compared with the case where the first ultraviolet irradiation device 100H is arranged below the target area S (for example, the floor surface or the like). Hereinafter, the parts different from the fifth embodiment will be mainly described, and the other configurations will be the same as those of the fifth embodiment.

At least one unit, preferably a plurality of units, of the first ultraviolet irradiation device 100H are attached to, for example, the top surface SR of one target area S. In this example, as the first ultraviolet light emitting means 101H of the first ultraviolet irradiation device 100H, even one lamp can irradiate in multiple directions, and as a light source having a shape similar to a point light source, for example, a spiral low-pressure mercury lamp LP is adopted. .. In this example, the case of a spiral low-pressure mercury lamp LP will be described, but a straight tube type low-pressure mercury lamp LP may be used. Further, the first ultraviolet light emitting means 101H may be a UV-LED. The low-pressure mercury lamp LP and UV-LED emit ultraviolet rays having a predetermined main wavelength, as in the case of the first embodiment.

Further, the support frame (support) 121 is an umbrella type (bowl type) that covers the side surface and the back surface except for a part of the spiral low-pressure mercury lamp LP (for example, the surface side facing the target area S), and is a lamp shade. Also serves as. Further, in this example, it is preferable that the support 121 also serves as an ultraviolet reflecting plate, and an ultraviolet reflecting means 250 is provided on the inner surface thereof (the mirror surface is 250A).

Further, a part of the low-pressure mercury lamp LP (for example, the surface side facing the target region S) has a state switching means 225 capable of changing the emission state of ultraviolet rays. In this example, the state switching means (movable body) 225 is the same as that of the fifth embodiment except that the support 121 is not provided and is configured to cover the surface facing the target area S. For example, a door and a shade. A louver or the like is attached to the support 121 and is configured to be movable (open / close) with respect to the first ultraviolet light emitting means 101H. The portion covered with the support 121 and the state switching means 225 is restricted in the emission direction and the amount of ultraviolet rays emitted, and the ultraviolet rays are emitted from the opening (open) portion of the state switching means 225.

Further, at least one unit, preferably a plurality of units of the first ultraviolet irradiation device 100H, is configured to be movable to an appropriate position. Specifically, for example, a rail 501 is attached to the top surface SR of the target region S, a slider 502 is fixed to the support 121 of the first ultraviolet irradiation device 100H, and the slider 502 is movably engaged with the rail 501. As a result, the first ultraviolet irradiation device 100H is configured to be movable at an arbitrary position along the rail 501. It is desirable that the movement of the first ultraviolet irradiation device 100H is controlled by the remote controller 270 by an infrared method, a wireless method, or the like.

To irradiate the target area S (particularly the area of interest S0 indicated by the broken line) evenly (avoiding the occurrence of non-ultraviolet areas due to obstacles) from above (top surface SR). Irradiation is the most efficient. In the present embodiment, the first ultraviolet irradiation device 100H for direct irradiation is provided on the top surface SR and is movable, so that the sterilization efficiency at the time of direct irradiation can be improved.

The movement of the first ultraviolet irradiation device 100H is not limited to the movement of sliding on the rail 501, and as shown in FIG. 3B, the support 121 (low pressure mercury) with respect to the rail 501 (top surface SR of the target region S). It also includes movement (swing) that changes the angle of the lamp LP). For example, in the case of a spiral low-pressure mercury lamp LP, the irradiation direction and irradiation amount of ultraviolet rays can be easily controlled by changing (adjusting) the angle of the support 121 with respect to the rail 501 (top surface SR of the target area S). is there. In this case, for example, in order to visually confirm the angle of the support 121, it is preferable to provide a guide (scale) for grasping the angle on the outer surface of the support 121. Further, the operation (opening / closing) of the state switching means 225 may be controlled by the remote controller 270. Further, the angle may be changed stepwise by a predetermined amount (for example, in increments of 15 °), or may be arbitrarily changed.

The second ultraviolet irradiation device 100G is, for example, the self-supporting second ultraviolet irradiation device 100G shown in FIG. 28 (E) in the fifth embodiment. In this case, at least one, preferably a plurality (for example, four) second ultraviolet irradiation devices 100G are arranged in one target area S. Since the second ultraviolet irradiation device 100G is constantly operated (operated), it is not expected to move as frequently as the first ultraviolet irradiation device 100H, but for example, the weight is reduced to such that an adult can easily move by one person. Is preferable.

With reference to FIG. 3C, the ultraviolet irradiation system 200H of the present embodiment provides an irradiation state estimation means 202 for estimating the irradiation conditions of ultraviolet rays required for cleaning by the first ultraviolet irradiation device 100 in the target area S. Have. In the sixth embodiment, for example, an illuminance meter 350 (see FIG. 3A) is arranged in the target area S, and a measurement point P having the target area S (for example, a measurement point in the area of interest S0 shown by a broken line). Illuminance (sometimes referred to as ultraviolet intensity or ultraviolet irradiation intensity) can be measured. Then, the irradiation state estimation means 202 is sterilized by the first ultraviolet irradiation device 100H based on, for example, the measurement result of the ilometer 350 (measured value of the ultraviolet irradiation intensity) and the cleanliness (required sterilization level) required for the target area S. The ultraviolet irradiation time (required irradiation time) required for the above is estimated and output (displayed on the display means 203 or the like). A specific example of the estimation method by the irradiation state estimation means 202 will be described later.

The estimation result is fed back to, for example, the drive control means 109, whereby the irradiation state (including the position and angle) of each first ultraviolet irradiation device 100H can be controlled. Further, the user of the ultraviolet irradiation system 200H controls the remote controller 270 based on the output (displayed) estimation result or arbitrarily as appropriate, and the irradiation state (including the position and angle) of each first ultraviolet irradiation device 100H. The operation of the second ultraviolet irradiation device 100G can be controlled.

Further, the ultraviolet irradiation system 200H estimates the ultraviolet irradiation conditions required for cleaning by the first ultraviolet irradiation device 100 in the target area S based on the input conditions, and objectively visualizes (visually approves) the simulation. It has means 205. The simulation means 205 is, for example, a function incorporated in the information processing device 201 of the ultraviolet irradiation system 200H in terms of hardware and / or software.

The simulation means 205 is described from, for example, ultraviolet irradiation conditions (capacity of the first ultraviolet light emitting means 101H (specifically, ultraviolet irradiation intensity at a reference position, reference UV intensity (illumination)), and the first ultraviolet light emitting means 101H. The ultraviolet intensity of the measurement point P is estimated based on the distance to the measurement point, etc.), and the required irradiation time is estimated according to the estimated ultraviolet intensity and the required sterilization level of the target area S. Since the required irradiation time varies depending on the irradiation conditions of ultraviolet rays and the required sterilization level, it is possible to simulate the cleanliness due to these fluctuations.

An example of a method of estimating the required irradiation time by the irradiation state estimation means 202 and the simulation means 205 will be described with reference to FIG. 31 (D). It should be noted that each numerical value here is only an example for explaining the method of estimating the required irradiation time.

First, the estimation (simulation) method of the simulation means 205 will be described. For example, as shown in FIG. 6A, at the measurement point P when two first ultraviolet light emitting means 101H (101H_A, 101H_B) are provided on the top surface SR of a certain target region S (indoor). An example of estimating the ultraviolet intensity and the required irradiation time will be described. The first ultraviolet light emitting means 101H (101H_A, 101H_B) is, for example, a low-pressure mercury lamp LP.

For example, the measurement point P is vertically below the first ultraviolet light emitting means 101H_A, and the two are separated by a distance L1. Further, the first ultraviolet light emitting means 101H_A and the first ultraviolet light emitting means 101H_B are separated by a distance LH in the horizontal direction. Further, the reference UV illuminance of the first ultraviolet light emitting means 101H_A (low pressure mercury lamp LP) and the first ultraviolet light emitting means 101H_B (low pressure mercury lamp LP) is set to X. ^{The reference UV irradiance here is, for example, the illuminance (ultraviolet irradiation intensity) [μW / cm 2} ] at one point 1 m away from the light source (low-pressure mercury lamp LP) in the ultraviolet emission direction. Then, the ultraviolet irradiation intensity at a certain measurement point P is inversely proportional to the square of the distance from the light source.

_{That is, the theoretical illuminance E A} ′ [μW / cm ² ] of the first ultraviolet light emitting means 101H_A at the measurement point P is represented by the following (Equation 2).

E _A '= X / L1 ² (Equation 2)
here,
X: Reference UV illuminance of the first ultraviolet light emitting means 101H_A [μW / cm ² ]
L1: Distance [m] between the first ultraviolet light emitting means 101H_A and the measurement point P.

Further, the illuminance _{E B} theoretical first ultraviolet light emitting means 101H_B at the measurement point P '[μW / cm ^2] is represented by the following equation (3).

_{^{E B '= X / L2 2}} = X / (L1 2 + LH 2) ( Equation 3)
here,
X: Reference UV illuminance of the first ultraviolet light emitting means 101H_B [μW / cm ² ]
L2: Distance [m] between the first ultraviolet light emitting means 101H_B and the measurement point P
L1: Distance [m] between the first ultraviolet light emitting means 101H_A and the measurement point P.
LH: Distance between the first ultraviolet light emitting means 101H_A and 101H_B [m]

Further, since the actual ultraviolet irradiation intensity changes depending on the shape of the reflector (here, the support 121) and the secondary reflection in the target region S, it is corrected by each correction coefficient. That is, the illuminance _{E A} of the first ultraviolet light emitting means 101H_A at the measurement point P [μW / cm ^2] the following equation (4) is illuminance _{E B} of the first ultraviolet light emitting means 101H_B at the measurement point P [μW / ^cm 2] Is represented by the following (Equation 5).

E _A = E _A '× C × K (Equation 4)
_{_{E B = E B '× C}} × K ( Equation 5)
here,
E _A ': illuminance theoretical first ultraviolet light emitting means 101H_A [μW / ^cm 2]
E _B ': illuminance theoretical first ultraviolet light emitting means 101H_B [μW / ^cm 2]
C: Correction coefficient based on the shape of the reflector K: Correction coefficient based on secondary reflection

^{Further, the total (total illuminance) E [μW / cm 2} ] of the illuminance (ultraviolet irradiation intensity) by the two first ultraviolet light emitting means 101H_A and 101H_B at the measurement point P is represented by the following (Equation 6).

E = E _A + E _B (Equation 6)
here,
E _A: intensity of first ultraviolet light emitting means 101H_A at the measurement point P [μW / ^cm 2]
E _B: intensity of first ultraviolet light emitting means 101H_B at the measurement point P [μW / ^cm 2]

In this example, a calculation example using two first ultraviolet light emitting means 101H (101H_A, 101H_B) is shown, but when the number of the first ultraviolet light emitting means 101H increases (for example, the first ultraviolet light emitting means 101H_C, 101H_D ... If the like increases), each first ultraviolet light emitting means 101H_C, 101H_D ... in accordance with the distance L3, L4 ... to the measurement point P from (equation 3) by illuminance theoretical Ec', _{E D} '... It is calculated, (equation 4) and (5) as well as calculated illuminance Ec, the E D _..., and calculates the sum illuminance E by (equation 6).

Then, assuming that the amount of ultraviolet irradiation required to inactivate the bacteria to be sterilized is W [μW · sec / cm ² ], the above-mentioned first ultraviolet light emitting means 101H_A and 101H_B of the bacteria to be measured at the measurement point P. The cumulative irradiation time of ultraviolet rays required for inactivation (required irradiation time T [sec]) is represented by the following (Equation 7).

T = W / E (Equation 7)
here,
W: Ultraviolet irradiation amount required to inactivate the bacteria to be sterilized [μW · sec / cm ² ]
E: Illuminance by all first ultraviolet light emitting means 101H at the measurement point P [μW / cm ² ]

Here, the "required sterilization level" of the target area S described above is the degree of cleanliness required for the target area S, that is, the degree of inactivating the bacteria to be sterilized (degree of decrease in survival rate, sterilization rate). Degree. In the actual first ultraviolet light emitting means 101H (low pressure mercury lamp LP), the cumulative amount of ultraviolet rays (cumulative ultraviolet irradiation amount) [μJ / cm ² ] and the sterilization rate [%] (or survival rate [N] of a certain bacterium. / N ₀ ]) has a predetermined correlation. For example, FIG. 6 shows an example in which the cumulative ultraviolet irradiation amount (light energy amount) required for 99.9% inactivation (inactivation) of each of the major bacterial species was extracted from the correlation. According to FIG. 6, for example, in order to inactivate Bacillus subtilis (spores) by 99.9%, light energy (cumulative ultraviolet irradiation amount) of ^{33,200 μJ / cm 2 is required.} The required cumulative UV irradiation dose varies depending on the degree of inactivation (99.9%, 99.99%, 99.999% ...). The simulation means 205 (and the irradiation state estimation means 202) of the present embodiment has an equation (ultraviolet ray amount-sterilization rate relational expression) showing the correlation for each target bacterial species, and is required to be a bacterial species. The above-mentioned ultraviolet irradiation amount W is estimated based on the input of the degree of activation (sterilization rate) and the relational expression.

Then, the simulation means 205 calculates (estimates) the required irradiation time T from the total illuminance E (Equation 6) and the ultraviolet irradiation amount W based on the input required sterilization level by (Equation 7), and outputs the output means (for example, , Display means) Output (display) to 203 or the like.

The simulation procedure by the simulation means 205 is as follows. For example, the simulation means 205 accepts the input of the ultraviolet irradiation condition and the required sterilization level by the user. Specifically, the user inputs, for example, via an input means (such as a controller 270 or a touch display of a mobile terminal (not shown)). In the above example, the simulation means 205 has the reference UV intensity X of each first ultraviolet light emitting means 101H and the distances L1, L2, L3 ... (Or) from the reference UV intensity X of each first ultraviolet light emitting means 101H to the measurement point P. , The input of the horizontal distance LH (LH1, LH2 ...) From the first ultraviolet light emitting means 101H vertically above the measurement point P to each first ultraviolet light emitting means 101H is accepted. The user inputs, for example, the bacterial species to be sterilized and the required sterilization rate as the required sterilization level.

In detail, for example, "Bacillus subtilis (spore)" is input as the target bacterial species, and the required degree of sterilization (for example, "99.9%" as the sterilization rate) is input. The simulation means 205 that has received the input calculates the ^{ultraviolet irradiation amount W (for example, 33,200 μJ / cm 2} ) based on the above-mentioned ultraviolet amount-sterilization rate relational expression. Alternatively, for example, the sterilization rate may be roughly classified into levels 1, 2, 3, ..., And the sterilization rate may be displayed together with the bacterial species on the display means 203 or the like so that the user can select and input them. The simulation means 205 that has received the selection input calculates the ultraviolet irradiation amount W according to the level based on the ultraviolet amount-sterilization rate relational expression. Further, for example, when the required ultraviolet irradiation amount W (here, for example, 33,200 μJ / cm ² ) is known, this may be directly input.

Then, the simulation means 205 calculates the illuminance (total illuminance) E by all the first ultraviolet light emitting means 101H at the measurement point P based on (Equation 6). The correction coefficient C based on the shape of the reflector and the correction coefficient K based on the secondary reflection are based on the size and shape of the first ultraviolet irradiation device 100H and the target area S (indoor) adopted at the time of designing the ultraviolet irradiation system 200. The value is set in advance.
Further, the simulation means 205 calculates (estimates) the required irradiation time T from the result of (Equation 6) and the ultraviolet irradiation amount W based on the input required sterilization level by (Equation 7), and outputs the output means (for example, for example). Display means) Output (display) to 203 or the like.

The user refers to the required irradiation time T of the estimation result, and appropriately changes the irradiation conditions of ultraviolet rays, the required sterilization level, and the like. The simulation means 205 estimates the required irradiation time T again based on the changed input. The user can also change the correction coefficient C and / or the correction coefficient K based on the secondary reflection based on the shape of the reflector, and the simulation means 205 renews based on the changed correction coefficient C and / or the correction coefficient K. The required irradiation time T is estimated. In this way, the cleanliness of the target area S can be managed according to the required irradiation time T.

Further, the simulation means 205 may enable validation (validation processing of the estimation result).

For example, in a certain existing target area S, for example, at the time of the first operation (first after introduction) of the ultraviolet irradiation system 200H, the simulation is performed by the above method. Then, the illuminance is actually measured by the illuminometer 350 at the measurement point P, and the error between the measured value (measured illuminance) and the total illuminance E (Equation 6) at the measurement point P calculated (estimated) by the simulation means 205 is calculated. Calculate and obtain the error coefficient M. Then, the required irradiation time T [sec] is corrected based on the error coefficient M. The corrected required irradiation time Tc [sec] is represented by the following (Equation 8).

Tc = W / E × M (Equation 8)
here,
W: Ultraviolet irradiation amount required to inactivate the bacteria to be sterilized [μW · sec / cm ² ]
E: Illuminance by all first ultraviolet light emitting means 101H at the measurement point P [μW / cm ² ]
M: Error coefficient

After that, in the validated target area S, the required irradiation time is simulated by using (Equation 8) instead of the above (Equation 7).

Next, an example of a method of estimating the required irradiation time by the irradiation state estimation means 202 will be described. The irradiation state estimation means 202 estimates the required irradiation time based on the irradiation conditions in the actual target area S. That is, for example, in a certain existing target region S, the actual illuminance of the target measurement point P is measured by the illuminometer 350. The irradiation state estimation means 202 uses this measured value as the total illuminance E of the above (Equation 6), and calculates (estimates) the required irradiation time T in the same manner as the simulation means 205.

The estimation procedure by the irradiation state estimation means 202 is as follows. For example, the irradiation state estimation means 202 accepts the input of the required sterilization level by the user. The required sterilization level (and its input method are the same as in the case of the simulation means 205. The irradiation state estimating means 202 that has received the input of the required sterilization level sets the ultraviolet irradiation amount W according to the level as the ultraviolet amount-sterilization rate. Calculate based on the relational expression.

Then, the irradiation state estimating means 202 sets the measured value (measured value) by the illuminometer 350 as the total illuminance E of (Equation 6), and from this and the ultraviolet irradiation amount W based on the input required sterilization level, (Equation). The required irradiation time T is calculated (estimated) according to 7) and output (displayed) to the output means (for example, display means) 203 or the like. Alternatively, the achievement rate until the required irradiation time T is reached may be calculated (estimated) and output based on the accumulation of the ultraviolet irradiation time from the start of the operation of the latest first ultraviolet irradiation device 100H. ..

The user can refer to the required irradiation time T of the estimation result and grasp the time until the target area S reaches the required sterilization level.

The above example is an example, and the irradiation state estimation means 202 and / or the simulation means 205 may estimate (calculate) the required irradiation time T (Tc) by a method other than the above.

Further, the degree of cleaning by the second ultraviolet irradiation device 100G may be controlled. The degree of cleaning by the second ultraviolet irradiation device 100G is controlled, for example, in the second ultraviolet irradiation device 100G (for example, the bag filter 300), on the upstream side of the bag filter 300, or in the target area S, particularly in the region S of interest and This is performed based on the measurement results of the particle counter 351 (particle number measuring device) provided in the vicinity or the like (see FIG. 31 (A)).

The particles that become suspended particles in the target area S and the sources of bacteria adhering to the particles are mainly medical personnel such as doctors and nurses who are active in the target area S and devices brought into the target area S. .. Bacteria attached to suspended particles move randomly in the air as suspended bacteria by Brownian motion. When the target area S is irradiated with ultraviolet rays, such floating bacteria are less likely to be blocked by equipment or the like, and are often exposed to ultraviolet rays in a place close to the light source, so that they are much more than adherent bacteria. It loses the activity of the bacterium in a short time and dies. However, the debris of the dead bacteria may cause a patient or the like to generate heat as a pyrogen (pyrogeneous substance) and fall into a serious situation. Therefore, in an environment where cleanliness is controlled, such as an operating room or a bioclean room, the number of suspended particles is often controlled by a particle counter 351 as a means for preventing the generation of pyrogen.
That is, it is considered that the degree of increase or decrease of the airborne bacteria in the target region S can be grasped by measuring the number of airborne particles (including the debris of the suspended bacteria). Therefore, the number of particles in the target area S is measured by the particle counter 351 and the possibility of invasion of workers and devices into the target area S is managed according to the number of particles. Specifically, when the number of particles falls below a predetermined threshold value corresponding to the required sterilization level, it is determined that the target region S is safely ready for use for the purpose work such as diagnosis and treatment. Further, for example, when the number of particles exceeds a predetermined threshold value corresponding to the required sterilization level, the invasion into the target area S of the worker or the device which causes the derivation of the suspended particles is restricted.

As described above, the ultraviolet irradiation system 200H of the present embodiment is configured to be able to manage the cleanliness (cleaning state) of the target area S at any time. That is, the sterilized state of adherent bacteria by the direct irradiation type ultraviolet irradiation device (first ultraviolet irradiation device 100H) is managed by using the estimation result of the estimation means based on the ultraviolet irradiation conditions and the cumulative irradiation time (cumulative intensity) of the ultraviolet rays. ..

In addition, the sterilization state of airborne bacteria (degree of reduction of airborne bacteria) by the indirect irradiation type ultraviolet irradiation device (second ultraviolet irradiation device 100G) is managed. Here, the degree of reduction of airborne bacteria is estimated from, for example, the measurement result of the particle counter 351 that counts the number of particles in the air. In general, the bacteria to be sterilized in the present embodiment often adhere to particles in the air and float. Therefore, the approximate number of bacteria is predicted by measuring the number of particles with the particle counter 351. More specifically, the airborne bacteria are sterilized by circulation sterilization in the second ultraviolet irradiation device 100G, and the particles to which the airborne bacteria (after sterilization) adhere are captured by the bag filter 300. That is, if the amount of particles recovered by the bug filter 300 exceeds the inflow of airborne bacteria (particles) into the target area S, it is considered that the number of particles in the target area S decreases and the airborne bacteria also decrease.

In this way, the sterilized state of adherent bacteria by the direct irradiation type ultraviolet irradiation device (first ultraviolet irradiation device 100H) and the sterilized state of airborne bacteria by the indirect irradiation type ultraviolet irradiation device (second ultraviolet irradiation device 100G) (of the floating bacteria). The degree of decrease) is also managed to manage the cleanliness of the target area S.

The operation of the ultraviolet irradiation system 200H of this embodiment will be described in more detail. For example, first, before using the target area S (before entering the room of a medical worker or patient in the target area S, in the case of no person), the ultraviolet rays in the first ultraviolet irradiation device 100H by the simulation means 205 and / or the irradiation state estimation means. The irradiation time of direct irradiation, specifically, the required irradiation time T (Tc) capable of sterilizing the required sterilization level of a predetermined adherent bacterium is estimated, and the room is managed so as not to be able to enter the room before the completion of sterilization. Then, when the required irradiation time T (Tc) has elapsed, it is assumed that the sterilization of the attached bacteria is completed, and the information on the completion of the sterilization of the attached bacteria is notified (output). In addition, the operation of the first ultraviolet irradiation device 100H is stopped.

Furthermore, the state of cleaning by the second ultraviolet irradiation device 100G is managed. Specifically, the particle counter 351 is managed, and when the number of particles in the air (which has a correlation with the number of airborne bacteria) falls below a predetermined threshold value according to the required sterilization level, sterilization is completed (collection of airborne bacteria is completed). ) Information (output).

Then, when the sterilization of the adherent bacteria and the recovery of the airborne bacteria are completed, the target area S can be used (entry permission).

Further, while the target area S is in use (in the case of manned), the operation of the first ultraviolet irradiation device 100H is stopped, only the second ultraviolet irradiation device 100G is operated, and circulation sterilization (indirect irradiation of ultraviolet rays in the flow path is performed). ). In this case as well, the particle counter 351 is managed, and if the number of particles in the air (which has a correlation with the number of suspended bacteria) exceeds a predetermined threshold value according to the required sterilization level, that fact (that the contamination has progressed). It is desirable to notify (output) the information (alarm) of.

The degree of particle counting (how fine particles are counted) of the particle counter 351 is appropriately selected and adjusted according to the dust collection performance of the bug filter 300.

As described above, in the sixth embodiment (example shown in FIG. 31), the case where the indirect irradiation type ultraviolet irradiation device is the self-supporting second ultraviolet irradiation device 100G has been illustrated, but in the sixth embodiment, the fifth embodiment ( A second ultraviolet irradiation device 100G provided with a duct 130 for creating a desired flow path as shown in FIGS. 28 and 30) may be adopted. In this case, the second ultraviolet irradiation device 100G with the duct 130 has a configuration in which both the air inlet IN (intake port 132) and the outlet OUT (near the bug filter 300) are arranged in the target region S. May be good. Further, the inflow port IN (intake port 132) is arranged in the target area S, the outlet OUT (near the bug filter 300) is arranged outside the target area S, and the inflow amount and the outflow amount are controlled in the target area S. The pressure may be controllable (negative pressure and positive pressure can be controlled).

It is also desirable that the particle counter 351 be installed at all times. For example, when the second ultraviolet irradiation device 100G provided with the duct 130 is adopted, it is desirable to install the particle counter 351 inside the second ultraviolet irradiation device 100G which is an air flow path (inside the duct 130 or the second ultraviolet irradiation device 100G). ..

In the present embodiment, since the first ultraviolet irradiation device 100H is arranged on the top surface, the distance from, for example, a certain first ultraviolet irradiation device 100H to a predetermined position of the target area S (for example, a predetermined position on the floor surface) is relatively easy. Moreover, it can be calculated accurately, and the illuminance of the first ultraviolet irradiation device 100H can be calculated relatively easily and accurately (for example, as compared with the configuration of the fifth embodiment). That is, in the present embodiment, the simulation result by the simulation means 205 is also highly accurate.

As a result, for example, the bactericidal effect (cleanliness) of the target area S when the irradiation conditions of the first ultraviolet irradiation device 100H are changed can be easily grasped without actually unmanning the target area S. Direct irradiation by the first ultraviolet irradiation device 100H (in an unmanned state) can be efficiently performed.

In the present embodiment, the irradiation state estimation means 202 and the simulation means 205 can further increase the reliability of the ultraviolet irradiation system 200H, and enable safe and highly efficient sterilization treatment by simple operation.

The ultraviolet irradiation system 200F of the fifth embodiment may also be configured to include the simulation means 205.

As described above, also in this embodiment, the direct irradiation type ultraviolet irradiation device and the indirect irradiation type ultraviolet irradiation device are separated and have an appropriate configuration for each irradiation method. In particular, by arranging a large number of direct irradiation type ultraviolet irradiation devices (first ultraviolet irradiation device 100H) on the upper part (for example, the ceiling) of the target area S, the area where the ultraviolet rays are not irradiated is further than the case where the direct irradiation type ultraviolet irradiation device (first ultraviolet irradiation device 100H) is arranged on the floor surface, for example. Can be reduced.

Especially in this example, once the rail 501 is installed, the first ultraviolet irradiation device 100H can be easily increased or decreased. Further, unlike the case where the first ultraviolet irradiation device 100H is installed on the floor surface or the like, it can be said that there is almost no hindrance to daily work (life) due to the large number of installations. That is, it is also possible to install a large number of devices on the top surface of the target area S and directly irradiate by selecting only the required number of devices (the required number and the required position) during operation.

Further, the second ultraviolet irradiation device 100G, which is an indirect irradiation type ultraviolet irradiation device, can be configured to obtain a desired air flow rate (the flow rate of the circulating air can be increased without the limitation of the direct irradiation type ultraviolet irradiation device). , The effect of circulation sterilization can also be enhanced.

The first ultraviolet light emitting means 101H may be a planar light emitting body.

As described above, the ultraviolet irradiation system 200H of the present embodiment can obtain a high bactericidal effect even though it has a simple configuration. Further, the irradiation state estimation means 202 and the simulation means 205 can further improve the reliability of the ultraviolet irradiation system 200H, and enable effective and safe sterilization processing by a simple operation (for example, operation by a remote controller). .. That is, it is possible to introduce the ultraviolet irradiation system 200 inexpensively and safely even in a general household or a public facility other than a medical facility.

<Use of simulation means as a user interface>
According to this embodiment, since the bactericidal effect can be easily visualized by the simulation means 205, it is possible to make a highly convincing proposal even in the spread (sales, etc.) of the ultraviolet irradiation system 200, for example. For example, by preparing a user interface that can present a simulation result by a predetermined input on, for example, the website of a sales company of the ultraviolet irradiation system 200, the understanding and expectation of the user can be increased, and the ultraviolet irradiation system 200 becomes widespread (sales). Etc.).

Each configuration (detailed configuration) of the ultraviolet irradiation device 100 of each embodiment described so far can be appropriately selected and combined. Further, the ultraviolet irradiation system 200 can be constructed by appropriately selecting and combining the ultraviolet irradiation devices 100 of each embodiment.

In addition, the configurations that can be appropriately selected and combined in the ultraviolet irradiation device 100 and the ultraviolet irradiation system 200 of the present invention are listed as modification examples, including the description overlapping with the above.

The ultraviolet irradiation device 100 is either a portable type (self-supporting type, a striking type, a hanging type), a mounting type (wall or top surface, partly movable), or a self-propelled type.

The cover means 103 may be provided integrally with the ultraviolet light emitting means 101 and may be configured so as not to move (open or close) relative to the ultraviolet light emitting means 101.

The blocking means 105 and the converting means 131 may be integrally configured with, for example, the covering means 103. Further, the cover means 103 may also have a configuration in which the blocking means 105 is also used.

The ultraviolet irradiation device 100 has

air flow paths

107 and 137 in the device, and may or may not have

flow paths

107 and 137.

The ultraviolet irradiation device 100 may directly irradiate the target region S without blocking UV (without blocking means 105). In this case, the irradiation direction may be changed by the state switching means 225 (louver) or the like.

The ultraviolet irradiation device 100 may be capable of switching between a blocked state and a non-blocked state by the blocking means 105.

The ultraviolet irradiation device 100 may or may not have a flow path 130 with a bug filter 300.

The ultraviolet irradiation device 100 may or may not have an integrated bug filter 300.

The ultraviolet irradiation device 100 may or may not have the ultraviolet reflecting means 250 integrally.

The ultraviolet irradiation system 200 may or may not include a flow path 130 with a bug filter 300.

The bug filter 300 may be provided integrally with the ultraviolet irradiation device 100, or may be a separate body.

The target region S may be provided separately from the ultraviolet irradiation device capable of directly irradiating the ultraviolet rays, and may have another ultraviolet irradiation device capable of irradiating the air in the flow path 137 and the flow path 137 with the ultraviolet rays. It does not have to be present.

As described above, the ultraviolet irradiation system 200 of the present invention can be freely set up in any space, such as a medical institution, a general home, a company, etc., and can be set up immediately and intensively. Can be sterilized and purified. In addition, effective ultraviolet irradiation treatment (sterilization treatment, circulation sterilization treatment) can be performed on the target area S, and safe and effective airborne bacteria, adherent bacteria, and viruses can be suppressed and sterilized. Infection can be prevented.

Therefore, it can be expected to be widely used as a disaster and pandemic countermeasure system in disaster-stricken areas and underdeveloped medical countries.

It should be noted that the ultraviolet irradiation system of the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

The ultraviolet irradiation device 100 of the present invention can be used in the fields of industries related to medical treatment, health maintenance, and the like.

100 UV irradiation device
101 Ultraviolet light emitting means
103 Cover means 103F Front cover part 103S Side cover part 105 Blocking means 107 Flow path 109 Drive control means 121 Support frame (support body, frame body)
123 Leg 130 Duct (flow path)
131 Conversion means 132 Intake port 137 Flow path 150 Partitioning means 150M Ultraviolet reflecting means
161 Engagement means 180 Door

181A Exhaust passage

181B Exhaust fan 182A Air supply passage 200 Ultraviolet irradiation system 201 Information processing device 202 Irradiation state estimation means 205 Simulation means 225 State switching means 250 Ultraviolet reflection means
260 Envelopment means 300 Bug filter 350 Illuminance meter 351 Particle counter 501 Rail 502 Slider S Target area S0 Area of interest SR Top surface (ceiling)
LP low pressure mercury lamp

Claims

An ultraviolet light emitting means capable of outputting ultraviolet rays including a predetermined main wavelength, and
It has, at least a part of the blocking means, which is arranged to face the ultraviolet light emitting means and blocks at least a part of the ultraviolet rays.
The blocking means is configured to be able to switch between a blocking state of ultraviolet rays and a non-blocking state.
An ultraviolet irradiation device characterized by the fact that.
It is configured so that the blocking state and the non-blocking state can be switched by the physical movement of the blocking means and / or the selection of the blocking means by controlling the material.
The ultraviolet irradiation device according to claim 1, wherein the ultraviolet irradiation device is characterized in that.
A covering means capable of forming an air flow path with the ultraviolet light emitting means is provided.
The ultraviolet irradiation device according to claim 1 or 2.
The ultraviolet light emitting means irradiates the air flowing in from one end side of the flow path and flowing out from the other end side with the ultraviolet rays.
The ultraviolet irradiation device according to claim 3.
In a state where the ultraviolet rays are output by the ultraviolet light emitting means, the blocking means can be switched between the blocking state and the non-blocking state by moving the blocking means relative to the ultraviolet emitting means.
The ultraviolet irradiation device according to any one of claims 1 to 4.
The main wavelength is a wavelength in the sterilization region.
The blocking means blocks light having a wavelength in the sterilization region.
The ultraviolet irradiation device according to any one of claims 1 to 5.
The ultraviolet irradiation device is portable.
The ultraviolet irradiation device according to any one of claims 1 to 6, wherein the ultraviolet irradiation device is characterized.
The ultraviolet reflecting means capable of reflecting the ultraviolet rays is provided.
The ultraviolet irradiation device according to any one of claims 1 to 7.
Equipped with a bug filter,
The ultraviolet irradiation device according to any one of claims 1 to 8.
The ultraviolet irradiation device includes engaging means capable of engaging with other members.
The ultraviolet irradiation device according to any one of claims 1 to 9.
The other member is another ultraviolet irradiation device.
The ultraviolet irradiation device according to claim 10.
An ultraviolet irradiation system having the ultraviolet irradiation device according to any one of claims 1 to 11 and irradiating the target area with the ultraviolet rays.
The target area is an area partitioned by the partitioning means.
An ultraviolet irradiation system characterized by this.
The ultraviolet irradiation device constitutes at least a part of the partition means.
The ultraviolet irradiation system according to claim 12.
An exhaust means for exhausting at least a part of the air in the target area to the outside of the target area is provided.
The ultraviolet irradiation system according to claim 12 or 13.
An ultraviolet light emitting means capable of outputting ultraviolet rays containing a predetermined main wavelength with respect to a target region, and
The flow path through which the air in the target area passes and
It is provided separately from the ultraviolet light emitting means, and has another ultraviolet light emitting means capable of outputting ultraviolet rays including a predetermined main wavelength to air passing through the flow path.
An ultraviolet irradiation system characterized by this.
An ultraviolet light emitting means capable of outputting ultraviolet rays containing a predetermined main wavelength with respect to a target region, and
It has an estimation means for estimating the degree of cleanliness in the target area or the irradiation condition of the ultraviolet rays required for cleaning the target area based on the irradiation state of the ultraviolet rays output from the ultraviolet light emitting means.
An ultraviolet irradiation system characterized by this.
A simulation means for estimating the irradiation conditions of ultraviolet rays required for cleaning the target area based on the input conditions.
The ultraviolet irradiation system according to claim 16.
The ultraviolet light emitting means is arranged above the target area.
The ultraviolet irradiation system according to claim 16 or 17.
The flow path through which the air in the target area passes and
It is provided separately from the ultraviolet light emitting means, and has another ultraviolet light emitting means capable of outputting ultraviolet rays including a predetermined main wavelength to air passing through the flow path.
The ultraviolet irradiation system according to any one of claims 16 to 18.
A plurality of ultraviolet irradiation devices provided with the ultraviolet light emitting means are provided.
The ultraviolet irradiation system according to any one of claims 15 to 19.
At least one of the UV irradiators is configured to be movable.
20. The ultraviolet irradiation system according to claim 20.
It is an ultraviolet irradiation method that irradiates the target area with ultraviolet rays of the main wavelength of the sterilization area.
A step of arranging an ultraviolet irradiation device capable of outputting the ultraviolet rays in the target area, and
It has a step of switching between a blocked state and a non-blocked state of the ultraviolet ray by the blocking means of the ultraviolet irradiation device.
An ultraviolet irradiation method characterized by the fact that.
By physically moving the blocking means and / or by selecting the blocking means by controlling the material, there is a step of switching between the blocking state and the non-blocking state of the ultraviolet rays.
22. The ultraviolet irradiation method according to claim 22.
It has a step of irradiating at least a part of the ultraviolet rays to the air flowing through the flow path provided inside the ultraviolet irradiation device.
The ultraviolet irradiation method according to claim 22 or 23.
In the state where the ultraviolet rays are output, the air flowing through the flow path is irradiated with the ultraviolet rays, and the blocked state and the non-blocked state are switched.
The ultraviolet irradiation method according to claim 24.
A step of outputting ultraviolet rays containing a predetermined main wavelength from an ultraviolet light emitting means to a target area, and
A step of outputting ultraviolet rays containing a predetermined main wavelength to the air passing through the flow path from another ultraviolet light emitting means provided in the flow path through which the air in the target region passes.
An ultraviolet irradiation method characterized by having.
A step of outputting ultraviolet rays containing a predetermined main wavelength from an ultraviolet light emitting means to a target area, and
Based on the output ultraviolet irradiation state, there is a step of estimating the degree of cleaning in the target area or the ultraviolet irradiation conditions required for cleaning in the target area by an estimation means.
An ultraviolet irradiation method characterized by the fact that.
This is a simulation method in which ultraviolet rays containing a predetermined main wavelength are output from an ultraviolet light emitting means to a target region.
Steps to accept input of conditions and
Based on the above conditions, the simulation means includes a step of simulating the irradiation conditions of ultraviolet rays necessary for cleaning the target area.
A simulation method characterized by that.