Toxicity target reduction device

Abstract

This invention provides a means to reliably decompose, inactivate, and / or kill toxic targets in a short time using a simple structure, and to continue reducing toxic targets over a long period of time. [Solution] The toxic substance reduction device comprises a substrate that is transparent to electromagnetic waves, an electromagnetic wave emission unit disposed in the internal space of the substrate that emits electromagnetic waves, a reflector provided on the substrate surrounding the electromagnetic wave emission unit that transmits the thermal rays of electromagnetic waves to the outside of the substrate and emits them, while also amplifying the amount of ultraviolet light by reflecting ultraviolet light back and forth to create a high-density, high-dose ultraviolet region, a housing that houses the electromagnetic wave emission unit and the substrate and is equipped with an intake port and an exhaust port, and a blower that introduces outside air from the intake port, passes it through the ultraviolet region, and discharges the air from which the toxic substance has been reduced to the outside through the exhaust port.

Description

Technical Field

[0001] The present invention relates to a device for reducing or eliminating a target of toxicity by decomposing, inactivating, and / or killing the target of toxicity.

Background Art

[0002] Conventionally, treatments such as sterilization using ultraviolet rays and inactivation of viruses have been performed. For example, a portable ultraviolet sterilization device in which an ultraviolet lamp is disposed in a case for storing medical instruments is known (see, for example, Patent Document 1). Such an ultraviolet sterilization device has a metal case (stainless steel plate, iron plate or copper plate with a chrome-plated surface, etc.) so that the inner surface of the case reflects ultraviolet rays.

[0003] Further, Patent Document 2 discloses a sterilization device that takes in air inside a housing and discharges sterilized air, and in the internal space of the housing, an ultraviolet lamp and a reflecting portion formed in a cylindrical shape so as to surround the ultraviolet lamp are disposed to reflect ultraviolet rays irradiated from the ultraviolet lamp.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The devices described in the aforementioned Patent Documents 1 and 2 amplify ultraviolet light by reflecting it, but because the reflectivity of the reflective surface itself is low, it is impossible to obtain a high amount of ultraviolet light. In order to reliably sterilize or inactivate viruses, it is necessary to irradiate with ultraviolet light for tens of seconds to several tens of seconds, which is very time-consuming. Furthermore, if the ultraviolet lamp is kept lit for an extended period, the temperature inside the device rises, which can easily lead to malfunctions such as the ultraviolet lamp failing to light up or a decrease in the amount of ultraviolet light being emitted.

[0006] This invention was made through the diligent research of the inventors in view of the above-mentioned problems, and aims to provide a means for reliably decomposing, inactivating, and / or killing toxic targets in a short time with a simple structure, and for continuously reducing toxic targets over a long period of time. [Means for solving the problem]

[0007] A toxicity elimination device according to one aspect of the present invention is characterized by comprising: a substrate that is transparent to electromagnetic waves; an electromagnetic wave emission unit disposed in the internal space of the substrate and emitting the electromagnetic waves; a reflector provided on the substrate surrounding the electromagnetic wave emission unit, which transmits the heat rays of the electromagnetic waves and emits them to the outside of the substrate, and also reflects the ultraviolet rays of the electromagnetic waves back and forth to amplify the amount of ultraviolet rays and create a high-density, high-dose ultraviolet region in the internal space; a housing that houses the electromagnetic wave emission unit and the substrate and is equipped with an intake port and an exhaust port; and a blower that introduces outside air from the intake port of the housing, passes it through the ultraviolet region, and discharges the air from which the toxicity elimination has been eliminated to the outside from the exhaust port of the housing.

[0008] Furthermore, the toxic substance mitigation device is characterized in that the heat rays are visible light and infrared rays.

[0009] Furthermore, the toxic substance reduction device is characterized in that the toxic substance is not only pathogenic microorganisms but also harmful molecules that have volatilized into the air.

[0010] Furthermore, the toxic substance reduction device is characterized by comprising an anti-fouling member that protects the surfaces of the reflector and the electromagnetic wave emission part, and prevents foreign matter or dirt from adhering to them.

[0011] Furthermore, the toxic substance elimination device is characterized by being disposed within the housing and having a leakage prevention unit that prevents the ultraviolet light from leaking outside the device.

[0012] Furthermore, the toxic substance reduction device is provided in a part of the housing and is characterized by having a viewing section that allows the illumination of the electromagnetic wave emission section to be visually confirmed.

[0013] Furthermore, the toxic substance reduction device is characterized in that the reflector has a reflective layer consisting of a multilayer film in which thin films of materials with different refractive indices are alternately stacked.

[0014] Furthermore, the toxic substance reduction device is characterized in that the reflective layer is formed by a dielectric multilayer film in which a dielectric material is deposited in multiple layers.

[0015] Furthermore, the toxic substance reduction device is characterized in that the thickness of each layer of the dielectric multilayer film is set to an integer multiple of 1 / 4 of the wavelength of ultraviolet light.

[0016] Furthermore, the toxicity reduction device is characterized in that the reflectance of the reflective layer of the reflector is set to 98% or more, and the amplification factor of the cumulative ultraviolet energy in the internal space is set to 50 times or more.

[0017] Furthermore, the toxic substance reduction device is characterized in that the reflective layer is a cold mirror that reflects ultraviolet light. [Effects of the Invention]

[0018] According to the present invention, a simple structure can reliably decompose, inactivate, and / or kill toxic targets in a short time, thereby reducing their effectiveness, and can also continue to reduce toxic targets over a long period of time. [Brief explanation of the drawing]

[0019] [Figure 1] This is a perspective view showing the ultraviolet amplification device of the present embodiment. [Figure 2] This is a diagram showing an example of the arrangement position of the reflective layer. [Figure 3] This is a schematic diagram showing the reflection of ultraviolet rays, the transmission of infrared rays and visible light by a reflector. [Figure 4] This is a cross-sectional view of a toxicity target elimination device equipped with an ultraviolet amplification device. [Figure 5] This is a diagram showing the flow direction of air passing through the toxicity target elimination device. [Figure 6] This is a schematic diagram showing the reflection of infrared rays and visible light, and the transmission of ultraviolet rays by a reflector.

Embodiment for Carrying out the Invention

[0020] The electromagnetic wave amplification device equipped with the reflector of the present invention will be described below. The electromagnetic wave amplification device has an electromagnetic wave emission source that emits electromagnetic waves of a specific wavelength, a reflector that reflects the electromagnetic waves of the specific wavelength, etc., and is a device that amplifies electromagnetic waves within the internal space defined by the reflector.

[0021] [[ID=३०]]Specifically, the ultraviolet amplification device 1 as an electromagnetic wave amplification device will be described with reference to FIG. 1. FIG. 1 is a perspective view showing the ultraviolet amplification device 1 of the present embodiment. The ultraviolet amplification device 1 has an ultraviolet emission unit 2 (electromagnetic wave emission source) that is long and emits ultraviolet rays radially, an ultraviolet reflector 4 (reflector), etc. The ultraviolet amplification device 1 also includes a control unit, an operation unit, a power supply unit, etc. that are not shown, and performs ultraviolet irradiation, etc. according to an input operation detected by the operation unit.

[0022] The ultraviolet emission unit 2 decomposes, inactivates, disinfects, sterilizes, bactericidalizes, sterilizes, etc. a toxicity target that is a target by ultraviolet rays. The ultraviolet emission unit 2 has an ultraviolet light source such as a germicidal lamp, an ultraviolet lamp, an ultraviolet LED, etc., forms a long straight tube shape, and emits ultraviolet rays substantially radially when viewed in the axial direction. Note that the shape of the ultraviolet emission unit 2 is not limited to a straight tube shape, and can be set to, for example, a bulb shape, a ring shape, a curved shape, etc.

[0023] The ultraviolet light emitted by the ultraviolet emission unit 2 preferably has a wavelength of about 100 to 400 nm, and is more preferably set to around 250 to 270 nm. Of course, the ultraviolet light may also be near-ultraviolet light (UV-C), far-ultraviolet light (wavelength 10 to 200 nm), extreme ultraviolet light (wavelength 10 to 121 nm), etc., with a wavelength of less than 260 nm, as long as it can at least neutralize the toxic substance. It may also be near-ultraviolet light (UV-A, UV-B) with a wavelength exceeding 300 nm.

[0024] The ultraviolet reflector 4 has an annular cross-sectional shape and a substantially cylindrical shape with its axis parallel to the longitudinal direction of the ultraviolet emission part 2, and surrounds the ultraviolet emission part 2 with its inner circumferential surface. That is, the ultraviolet reflector 4 forms an inner space surrounded by its inner circumferential surface, and the ultraviolet emission part 2 is arranged in this inner space. The position of the ultraviolet emission part 2 in the inner space can be set as appropriate, but here it is assumed to be placed in the center of the inner space.

[0025] The ultraviolet reflector 4 is constructed by providing a reflective layer 6 on a substrate 5 containing a material that is transparent to visible light and infrared rays. The substrate 5 can be formed from one or more transparent materials selected from, for example, resin materials such as acrylic, polycarbonate, and polyvinyl chloride, or glass-based materials. Alternatively, the substrate 5 may be constructed by adding metal materials, ceramic materials such as ceramics, hydraulic materials such as cement, carbon materials, etc., to the transparent material.

[0026] The reflective layer 6 is configured to be transparent to visible light and infrared rays, and reflective to ultraviolet rays. The reflective layer 6 may be, for example, a cold mirror that reflects ultraviolet rays. Such a reflective layer 6 can be formed, for example, by a dielectric multilayer film obtained by depositing a dielectric material in multiple layers on a substrate 5. Alternatively, the reflective layer 6 may be provided by attaching a thin plate to which a cold mirror has been deposited to the substrate 5, or by placing it inside the substrate 5. In this case, the thin plate is made of a material that is transparent to visible light and infrared rays.

[0027] A dielectric multilayer film is a film that can be constructed by alternately stacking dielectric thin films of high refractive index materials and dielectric thin films of low refractive index materials. Examples of high refractive index materials include titanium dioxide (TiO2), aluminum oxide (AL2O3), and zirconium oxide (ZrO2). Examples of low refractive index materials include silicon dioxide (SiO2), zinc peroxide (ZnO2), and magnesium fluoride (MgF2).

[0028] The reflective layer 6 is arranged over the entire area of ​​the surface of the ultraviolet reflector 4 facing the ultraviolet emitter 2 so as to be able to reflect almost all of the ultraviolet rays irradiated from the ultraviolet emitter 2. Of course, the location of the reflective layer 6 can be set as appropriate, and for example, it can be provided intermittently along the axial and / or circumferential directions on the inner circumferential surface of the ultraviolet reflector 4.

[0029] The thickness of the reflective layer 6 can be set as appropriate, but when formed by a multilayer film, the thickness of each layer can be set to an integer multiple of 1 / 4 of the wavelength of the ultraviolet light to be reflected (an odd or even multiple of 1 / 4 of the wavelength of ultraviolet light). Specifically, if the wavelength of the ultraviolet light to be reflected is set to 253.7 nm, the thickness of each layer can be set to 63.4 nm (i.e., 1x 1 / 4 of the wavelength), 126.8 nm (i.e., 2x 1 / 4 of the wavelength), 190.3 nm (3x 1 / 4 of the wavelength), etc. Of course, when the reflective layer 6 is formed by a multilayer film, the film thickness per layer may be a so-called thick film of several tens of micrometers, a so-called thin film of several micrometers, or a so-called ultrathin film of a few nanometers or less.

[0030] Furthermore, the ultraviolet reflector 4 is formed to surround the ultraviolet emission section 2 by having a substantially endless cross-section, and the reflective layer 6 is arranged on the inner circumferential surface (inner surface) so that ultraviolet light is reflected inward in a higher order, i.e., repeatedly many times (see Figure 2(a)). Of course, as shown in Figure 2(b), the reflective layer 6 may also be arranged on the outer circumferential surface (outer surface) of the substrate 5 to reflect ultraviolet light that has passed through the substrate 5 inward.

[0031] The method for forming the above-mentioned ultraviolet reflector 4 can be set as appropriate. For example, it may be formed by providing a reflective layer 6 on the inside and / or outside of a pre-formed cylindrical base body 5, or it may be formed by providing a reflective layer 6 on a plate-shaped base body 5 and bending the base body 5 into a cylindrical shape. When providing a reflective layer 6 on the outer surface of a cylindrical base body 5, the base body 5 should be made of a material that also transmits ultraviolet light. This makes it possible to reflect ultraviolet light that passes through from inside the cylinder inward by the reflective layer 6 provided on the outer surface, thereby increasing the ultraviolet light density inside the cylinder.

[0032] Figure 3 is a schematic diagram showing the reflection of ultraviolet light and the transmission of infrared and visible light by the reflector. The ultraviolet amplification device 1 can create a high-density, high-dose ultraviolet region inside the ultraviolet reflector 4. That is, of the electromagnetic waves emitted from the ultraviolet emission unit 2, the ultraviolet light is reflected radially inward toward the ultraviolet emission unit 2 by the reflective layer 6. The ultraviolet light reflected toward the ultraviolet emission unit 2 is then transmitted (passed through) the ultraviolet emission unit 2 and reflected again radially inward by the reflective layer 6 on the extension line. Therefore, the ultraviolet light is reflected multiple times, preferably many times (more than a dozen times), and preferably very many times (more than a hundred times) by the reflective layer 6, as if going back and forth along the radial direction.

[0033] On the other hand, of the electromagnetic waves emitted from the ultraviolet emission section 2, visible light and infrared light pass through the reflective layer 6 and the substrate 5, as shown by the dotted lines in Figure 3. That is, visible light and infrared light are emitted to the outside of the ultraviolet reflector 4.

[0034] The cumulative ultraviolet irradiation energy when ultraviolet light is reflected by the ultraviolet reflector 4 will be explained using the case of using a cold mirror as an example. Here, the reflectivity of ultraviolet light by the cold mirror is assumed to be 99%. This corresponds to a 1% decrease in the amount of photons when ultraviolet light is reflected by the cold mirror compared to before reflection. Therefore, the residual photon rate (100% when the number of reflections is 0) decreases cumulatively, becoming 99% when the ultraviolet light is reflected by the cold mirror once, 98.01% when the number of reflections is 2, and approximately 97.03% when the number of reflections is 3.

[0035] The following formula assumes an ultraviolet reflectance of 99% (a 1% reduction in photons during reflection) and calculates the cumulative ultraviolet irradiation energy when ultraviolet light is reflected an infinite number of times.

number

number

[0036] This yields a value of 100 for the cumulative ultraviolet energy up to an infinite number of ultraviolet reflections. This indicates that, if the ultraviolet irradiation energy from a single irradiation is set to 1, the cumulative ultraviolet irradiation energy is approximately 100 times that amount.

[0037] Therefore, a high-dose ultraviolet region approximately 100 times greater than the amount of ultraviolet energy emitted from the ultraviolet emission unit 2 is created in the internal space of the ultraviolet reflector 4. As a result, the toxic target located in the gap between the inner surface of the ultraviolet reflector 4 and the ultraviolet emission unit 2 can be irradiated with a much higher dose of ultraviolet radiation than when ultraviolet radiation is irradiated without reflection. Consequently, the toxic target can be reliably reduced in a very short time (e.g., less than 0.05 seconds) with a virus inactivation rate of 99.9999% or more.

[0038] Furthermore, among the electromagnetic waves emitted from the ultraviolet emission unit 2, visible light and infrared rays, which are heat rays that cause a temperature rise, pass through the ultraviolet reflector 4. This suppresses the rise in the internal temperature of the ultraviolet reflector 4, and even though the ultraviolet emission unit 2 is highly temperature-dependent, it is possible to suppress the decrease in ultraviolet emission output due to the temperature rise, enabling stable operation for a long period of time.

[0039] Generally, materials with UV reflectivity that can be used include metal materials such as aluminum and stainless steel. The reflectivity for ultraviolet light in the wavelength range of 250-270 nm is approximately 46% for aluminum and approximately 26% for stainless steel. Therefore, the cumulative UV energy obtained by a reflective layer using aluminum is approximately 1.85 times greater. The cumulative UV energy obtained by a reflective layer using stainless steel is approximately 1.35 times greater.

[0040] Therefore, while it is extremely difficult to create a high-dose ultraviolet region using commonly used materials such as aluminum and stainless steel that have ultraviolet reflectivity, the ultraviolet amplification device 1 of this embodiment can obtain cumulative ultraviolet energy at a much higher magnification, making it possible to create a highly dense, high-dose ultraviolet space with extremely low power consumption.

[0041] Furthermore, the reflector 4 only needs to have a shape that surrounds at least the ultraviolet emission part 2, and its cross-sectional shape may be circular, elliptical, oblong, rectangular, polygonal, star-shaped, Reuleaux polygonal, or a shape that includes a parabola in part.

[0042] Furthermore, the reflector 4 is not limited to a cylindrical shape, but may also be in the shape of a box or the like, which can be sealed inside with a lid or the like. By making it a box shape, it is possible to sterilize or inactivate toxic substances attached to the items stored inside.

[0043] Furthermore, while the reflectance of the reflective layer 6 was set to 99%, the reflectance is of course not limited to this. However, a decrease in reflectance reduces the amplification factor of the cumulative ultraviolet energy. Therefore, it is preferable to set the reflectance to 80% or higher and the amplification factor of the cumulative ultraviolet energy to 5 times or higher, more preferably to set the reflectance to 90% or higher and the amplification factor to 10 times or higher, and more preferably to set the reflectance to 98% or higher and the amplification factor to 50 times or higher. Possible means of forming a reflective layer with these reflectances include applying an ultraviolet-reflective paint (for example, a paint containing particulate silica (SiO2), alumina (Al2O3), etc.).

[0044] Furthermore, the region where the reflective layer 6 is formed only needs to be located at a position that reflects ultraviolet light repeatedly in a high order. For example, the reflective layer may be scattered on the inner and / or outer surface of the substrate 5 such that the reflective layer is located at a point opposite to the direction of reflection of ultraviolet light from the reflective layer that reflects ultraviolet light emitted from the ultraviolet light emission part.

[0045] Next, a toxic substance reduction device equipped with the ultraviolet amplification device of the present invention will be described. Figure 4 is a cross-sectional view of a toxic substance reduction device 10 equipped with the ultraviolet amplification device 1. The toxic substance reduction device 10 is equipped with the ultraviolet amplification device 1 of the present invention, a blower 14, etc., inside a roughly cylindrical housing 12. Outside air is introduced through an intake port formed in the housing 12, passes through the ultraviolet amplification device 1, and is discharged from an outlet, thereby reducing toxic substances contained in the air.

[0046] The housing 12 has two openings, each of which is either an inlet 16 or an outlet 18. These openings are spaced apart along the longitudinal direction of the housing 12, with the inlet 16 at the top and the outlet 18 in the middle. The housing 12 may also have a visible section formed on the entire housing 12 or on part thereof, which allows the illumination of the ultraviolet emission unit 2 to be seen. That is, the housing 12 can have a visible section made of a transparent material through which electromagnetic waves (i.e., visible light and infrared rays) emitted from the ultraviolet emission unit 2 and transmitted through the reflector 4 can pass. If the entire housing 12 is made of a transparent material, the entire housing 12 will function as a visible section that can transmit visible light. Alternatively, a part of the housing 12 can be opened in a window shape, and a visible section made of a transparent material can be provided in the opening, making the illumination of the ultraviolet emission unit 2 visible through the visible light transmitted through the visible section.

[0047] As the blower 14, axial flow fans (propeller fans), mixed flow fans, centrifugal fans (multi-blade fans, sirocco fans, radial fans, plate fans, turbo fans, limit load fans, airfoil fans, etc.), centrifugal axial flow fans, vortex flow fans, transverse flow fans (cross-flow fans, etc.) can be used.

[0048] Furthermore, a leak prevention section 20 is provided inside the housing 12 to prevent leakage of ultraviolet light to the toxicity reduction device 10. The shape of the leak prevention section 20 can be set as appropriate, as long as it has a shape that blocks ultraviolet light while ensuring airflow gaps. For example, a honeycomb structure or a structure in which multiple slats inclined in the axial direction are arranged in parallel can be used. The leak prevention section 20 can also be placed between the ultraviolet reflector 4 and the intake port 14.

[0049] With this toxic substance elimination device 10, by incorporating an ultraviolet amplification device 1, it is possible to take in outside air and radiate a high dose of ultraviolet light to toxic substances in the air, thereby eliminating the toxic substances. That is, as shown in Figure 5, when the blower 14 is driven, the air drawn in through the intake port 16 passes through the space surrounded by the inner surface of the base body 5 (ultraviolet reflector 4) and is discharged to the outside from the discharge section 18. At this time, as the air passes through the high-density ultraviolet region created by the ultraviolet amplification device 1, a high dose of ultraviolet light is irradiated onto the toxic substances contained in the air, and as a result the toxic substances can be eliminated. Moreover, as described above, the dose in the high-density ultraviolet region is amplified to about 100 times that of the ultraviolet light irradiated from the ultraviolet emission section 2, so toxic substances such as bacteria and viruses that have passed through the ultraviolet amplification device 1 can be reliably decomposed, inactivated and / or killed, thereby eliminating them.

[0050] Furthermore, as a means of ensuring safety by preventing objects from entering the interior from the opening or people from peeking inside, a human detection sensor or an object detection sensor may be provided to turn off the ultraviolet light emitter or stop the operation of the fan (flow generation unit 30) when a person or object is detected.

[0051] Furthermore, the ultraviolet amplification device 1 may be equipped with an anti-fouling member to protect the surfaces of the ultraviolet emission section 2 and the ultraviolet reflector 4 and prevent foreign matter and dirt such as dust and grime from adhering to them. The anti-fouling member is made of an ultraviolet-transmitting material and has a substantially cylindrical shape, and may be provided in a circular manner along the inner circumferential surface of the ultraviolet reflector 4, or in a circular manner along the outer circumferential surface of the ultraviolet emission section 2. The ultraviolet-transmitting material used to form the anti-fouling member may be glass, quartz (SiO2), sapphire (Al2O3), amorphous fluororesins such as PTFE, acrylic resins, etc.

[0052] Furthermore, the ultraviolet emission unit 2 installed within the ultraviolet reflector 4 is not limited to one unit, but may be installed in multiple units. Increasing the number of units increases the cumulative ultraviolet energy, thus shortening the time required to neutralize toxic substances. This allows for an increase in the amount of air flowing from the blower 14 of the toxic substance neutralization device 10, thereby improving the neutralization efficiency of toxic substances within a predetermined range.

[0053] Furthermore, the ultraviolet amplification device of the present invention is not limited to use for reducing toxic substances in the air, but can also be used for toxic substances in fluids. Here, "fluid" is a concept that includes gases, liquids, and powders, and "toxic substances" are pathogenic microorganisms such as bacteria and viruses, as well as substances containing harmful molecules such as formaldehyde, sulfur dioxide, nitrite, and odor components, which are toxic to the human body and move with the fluid.

[0054] Therefore, ultraviolet amplification devices can be used by mounting, embedding, incorporating, or combining them with various devices and equipment. Such devices and equipment can be used in any system where fluid can flow inside, such as air conditioners, electric fans, circulators, air purifiers, humidifiers, dehumidifiers, ventilation fans, vacuum cleaners, circulation pumps, mist showers (sprayers), exhaust systems, plants, septic tanks, piping, and connecting members for connecting pipes. Furthermore, the number and placement of ultraviolet amplification devices can be set as appropriate. For example, multiple ultraviolet amplification devices may be placed in the middle of a fluid flow path.

[0055] Furthermore, devices equipped with ultraviolet amplification devices are not limited to those having a mechanism for fluid flow; they may also include devices configured so that at least the intake and discharge parts communicate with the outside in order to allow fluid to pass through. Examples of such devices include vehicle roofs, seat backs, seat headrests, plywood panels, tables, desks, chairs, walls, ceilings, elevators, etc. In particular, when using ultraviolet light emitters to reduce or eliminate toxic substances, they can be embedded and used in devices installed in spaces where people gather or where people tend to congregate.

[0056] Furthermore, although the present invention has been described using an ultraviolet amplification device as an example of an electromagnetic wave amplification device, it can also be used as an infrared amplification device to amplify infrared rays. Specifically, as shown in Figure 6, the infrared rays (and visible light) emitted from the electromagnetic wave emission section inside the cylinder formed by the substrate 5 are reflected inward by the reflective layer 6, and ultraviolet rays are transmitted through the substrate 5 and the reflective layer 6 to increase the infrared ray density inside the cylinder (and further amplify the visible light).

[0057] Of course, any electromagnetic wave that can be reflected by the reflective layer can be amplified by the electromagnetic wave amplification device of the present invention, even if it is an electromagnetic wave other than ultraviolet, infrared, and visible light. In this way, by reflecting electromagnetic waves of a specific wavelength range with a reflector, the electromagnetic wave amplification device can be used as a device that amplifies electromagnetic waves of that specific wavelength range. [Explanation of symbols]

[0058] 1...Electromagnetic wave amplifier, 2...Ultraviolet light emitter, 4...Reflector, 5...Substrate, 6...Reflective layer, 10...Toxic substance reduction device, 12...Housing, 14...Air blower

Claims

1. A substrate that is transparent to electromagnetic waves, An electromagnetic wave emission unit is disposed in the internal space of the above substrate and emits the above electromagnetic waves, A reflector is provided on the base surrounding the electromagnetic wave emission section, which transmits the heat rays of the electromagnetic waves and emits them to the outside of the base, and also reflects the ultraviolet rays of the electromagnetic waves back and forth to amplify the amount of ultraviolet rays, thereby creating a high-density, high-dose ultraviolet region in the internal space. A housing comprising the above-mentioned electromagnetic wave emission section and the above-mentioned base, and equipped with an intake port and an exhaust port, A blower that introduces outside air through the intake port of the above-mentioned housing, passes it through the ultraviolet region, and discharges the air, from which toxic substances have been reduced, to the outside through the exhaust port of the above-mentioned housing, A toxicity reduction device characterized by having the following features.

2. The toxic substance reduction device according to claim 1, characterized in that the heat rays are visible light and infrared rays.

3. The toxic target is characterized in that the toxic target is a pathogenic microorganism as well as harmful molecules that have volatilized into the air, as described in claim 1 or 2.

4. The toxic substance reduction device according to any one of claims 1 to 3, further comprising an anti-fouling member that protects the surface of the reflector and the electromagnetic wave emission part and prevents foreign matter or dirt from adhering to it.

5. The toxic substance reduction device according to any one of claims 1 to 4, characterized in that it is disposed in the housing and has a leakage prevention unit for preventing the ultraviolet light from leaking out of the device.

6. The toxic substance reduction device according to any one of claims 1 to 5, characterized in that it has a viewing section provided in a part of the housing, which allows the illumination of the electromagnetic wave emission section to be visually confirmed.

7. The toxic substance elimination device according to any one of claims 1 to 6, characterized in that the reflector has a reflective layer made of a multilayer film in which thin films of different refractive index materials are alternately stacked.

8. The toxic substance reduction device according to claim 7, characterized in that the reflective layer is formed by a dielectric multilayer film obtained by depositing a dielectric in multiple layers.

9. The toxic substance reduction device according to claim 8, characterized in that the thickness of each dielectric multilayer film is set to an integer multiple of 1 / 4 of the wavelength of ultraviolet light.

10. The toxic substance reduction device according to any one of claims 7 to 9, characterized in that the reflector has a reflectance of 98% or more of the reflective layer, and the amplification factor of the cumulative ultraviolet energy in the internal space is 50 times or more.

11. The toxic substance elimination device according to any one of claims 7 to 10, characterized in that the reflective layer is a cold mirror that reflects ultraviolet light.

Images