KR20220119307A - Sterilization device harmless to human body - Google Patents

Abstract

The sterilization apparatus according to an embodiment of the present invention may combine a flat lamp and an LED lighting device in which at least one light source emitting ultraviolet light including a wavelength of 222 nm is disposed in an inner region, and the light emitting surface of the lamp It includes a filter that is coated or laminated on the 230 to 270 nm wavelength.

Description

Sterilization device harmless to human body

The present invention relates to a sterilization device, and more specifically, it absorbs a trace amount of ultraviolet rays in the 230 to 265 nm region that can be generated in a lamp with a wavelength of 207 to 222 nm of microplasma to make it non-toxic, thereby removing and sterilizing bacteria and viruses that are harmless to the human body. It relates to an apparatus, a sterilization lamp, and a sterilization method.

A technique for sterilizing by irradiating ultraviolet rays is known. For example, it is known that DNA exhibits the highest absorption characteristic in the vicinity of a wavelength of 260 nm. A low pressure mercury lamp shows a high emission spectrum in the vicinity of 254 nm wavelength. For this reason, the technique of performing sterilization using a mercury lamp is widely used. However, it is known that there is a risk of affecting the human body when the human body is irradiated with ultraviolet rays in such a wavelength band.

The skin is divided into three parts from the part closer to the surface: the epidermis, the dermis, and the subcutaneous tissue in its deepest part. . When ultraviolet rays with a wavelength of 254 nm are irradiated to the human body, they pass through the stratum corneum, reach the granular layer, the stratum corneum, and in some cases the basal layer, where they are absorbed by the DNA of cells existing in these layers. As a result, there is a problem that can cause skin cancer.

Japanese Patent No. 6025756

The technical problem to be solved by the present invention is to provide a sterilization device and a sterilization lamp harmless to the human body.

In order to solve the above technical problem, a sterilization apparatus according to an embodiment of the present invention includes a flat lamp in which at least one light source emitting ultraviolet rays is disposed in an inner region; a filter coated or laminated on the light emitting surface of the lamp to filter a wavelength of 230 to 270 nm; and a front electrode layer and a rear electrode layer bonded to the upper and lower portions of the lamp to supply power to the lamp, wherein the front electrode layer has a hole through which the light of the lamp passes.

In addition, the filter may include a nano-phosphor for converting the light of the 230 to 270 nm wavelength into light of another wavelength.

In addition, the nanophosphor may convert the light having a wavelength of 230 to 270 nm into light having a wavelength of 550 nm.

In addition, the nanophosphor may include LaPO4:Ce.Tb.

In addition, the at least one light source emitting ultraviolet light may be a 222 nm KrCl excimer light source.

In addition, the lamp may have a conductive line formed in an edge region, and may be in contact with the conductive line of the front electrode layer and the rear electrode layer to supply power.

In addition, it further includes a housing in which a handle part that can be gripped by a user is formed, wherein the front electrode layer and the rear electrode layer are configured to supply power to the lamp when the inclination of the emitting surface with the ground exceeds 75 degrees. can be blocked

In addition, a tilt sensor for measuring the inclination of the ramp; And when the slope measured by the inclination sensor exceeds 75 degrees, it may further include a power cutoff unit for cutting off the power supply to the lamp.

In addition, one electrode layer of the front electrode layer and the rear electrode layer may be a (+) electrode, and the other electrode layer may be a bactericidal lamp having a (-) electrode.

In addition, a counter for counting time from the time when power is applied to the conductive line may be further included, and if the time of the counter is 10 seconds or more, the power supply to the lamp may be cut off.

In addition, the filter may block light having a wavelength of 230 to 265 nm.

In order to solve the above technical problem, a germicidal lamp according to another embodiment of the present invention includes an ultraviolet light source; and a filter for filtering a wavelength of 230 to 270 nm emitted from the ultraviolet light source.

In addition, the filter may include a nano-phosphor for converting the light of the 230 to 270 nm wavelength into light of another wavelength.

In addition, the nanophosphor may include LaPO4:Ce.Tb.

In addition, it may include an absorption filter by the Sn and Al vacuum deposition.

In addition, the ultraviolet light source may be a 222 nm KrCl excimer lamp.

In addition, the filter may block light having a wavelength of 230 to 265 nm.

In addition, the ultraviolet light source, a 222 nm KrCl excimer lamp light source; and an LED light source.

According to embodiments of the present invention, it is possible to provide a sterilization device and a sterilization lamp that are harmless to the human body while killing viruses and bacteria.

1 shows a sterilization apparatus according to an embodiment of the present invention.
2 to 9 are views for explaining a sterilization apparatus according to an embodiment of the present invention.
10 to 16 show an embodiment of a sterilization device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical spirit of the present invention is not limited to some embodiments described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components may be selected between the embodiments. It can be used by combining or substituted with

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention pertains, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art.

In addition, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "at least one (or one or more) of A and (and) B, C", it is combined with A, B, C It may include one or more of all possible combinations.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and are not limited to the essence, order, or order of the component by the term.

And, when it is described that a component is 'connected', 'coupled', or 'connected' to another component, the component is directly 'connected', 'coupled', or 'connected' to the other component. In addition to the case, it may include a case of 'connected', 'coupled', or 'connected' by another element between the element and the other element.

In addition, when it is described as being formed or disposed on "above (above)" or "below (below)" of each component, "above (above)" or "below (below)" means that two components are directly connected to each other. It includes not only the case of contact, but also the case where one or more other components are formed or disposed between two components. In addition, when expressed as "upper (upper)" or "lower (lower)", the meaning of not only an upper direction but also a lower direction based on one component may be included.

1 is a perspective view of a sterilizing apparatus according to an embodiment of the present invention, and FIG. 2 is a side view of the sterilizing apparatus according to an embodiment of the present invention.

The sterilization apparatus 100 according to an embodiment of the present invention is composed of a lamp 110 and a filter 140, a front electrode layer 120, a rear electrode layer 130, a power cutoff unit (not shown) or a tilt sensor ( Not shown) and the like may be further included.

The lamp 110 includes at least one light source 111 emitting ultraviolet rays, and the light source 111 is disposed in the inner region. Sterilization or sterilization is performed using the emitted ultraviolet rays. The lamp 110 is formed in a planar shape to emit light. A uniform sterilization area can be realized through surface light emission. The shape of the lamp may be a rectangle or a circle, and may be formed in various shapes such as a square column or a cylinder.

In order to kill viruses, bacteria, etc., a lamp 110 emitting ultraviolet rays is formed. Here, the lamp 110 may emit ultraviolet rays having a wavelength of 200 to 230 nm. The lamp 110 may be an excimer lamp (microplasma lamp) using KrCl as a luminescent gas. In addition, the lamp may be various lamps emitting ultraviolet rays.

Halogen gas (fluorine, chlorine, etc.) and dilute gas (krypton, xenon, etc.) combine by high voltage discharge or the like to form excimer molecules. When excimer molecules decay, they emit ultraviolet light, which is used by excimer lasers. Excimer lamp is a technology that induces molecular dissociation of internal gas by forming a high-voltage electric field in a quartz tube filled with a combination of inert gas and halogen gas, and emits a single wavelength in the UV-C region. Accordingly, irradiation treatment of a desired wavelength is possible. In addition, it has a light intensity corresponding to that of the existing UV-C low pressure lamp, so it is easy to apply to the actual food sterilization process. Among the various wavelengths, the light of 222 nm wavelength of KrCl gas shows high sterilization efficiency. Light with a wavelength of 222 nm has a sterilizing effect that removes viruses, bacteria, and spores. The KrCl excimer light source emits ultraviolet light having a peak at a wavelength of 222 nm. In this case, not only light of a wavelength around 222 nm but also light of a wavelength of 230 nm or more is emitted.

Light having a wavelength of 230 to 270 nm is toxic, and when irradiated to the human body, has a harmful effect on the human body, such as causing skin cancer. The skin is divided into three parts: the epidermis, the dermis, and the subcutaneous tissue in its deepest part from the part closest to the surface, and the epidermis is, in order from the part closer to the surface, the stratum corneum, the granular cell layer, and the stratum corneum. It is divided into four layers: a spinous layer and a basal layer. Although light with a wavelength of 222 nm cannot penetrate the stratum corneum even when irradiated to the human body, light with a wavelength of 230 nm or more, for example, 254 nm, passes through the stratum corneum and reaches the granular layer, the stratum corneum, and in some cases the basal layer, and these layers It is absorbed into the DNA of the cells present inside, and this can cause skin cancer, etc. When light of a wavelength of 230 to 270 nm is irradiated to the eye, it may cause keratitis and the like. Therefore, it is necessary to remove a trace amount of light with a wavelength of 230 to 270 nm emitted from the KrCl exima lamp.

The filter 140 is coated or laminated on the light exit surface of the lamp 110 to filter wavelengths of 230 to 270 nm. The filter 140 is formed on the surface of the lamp 110 and filters 230 to 270 nm wavelength emitted from the lamp 110 to prevent light of a wavelength harmful to the human body from being emitted to the outside. As shown in FIG. 3 , the filter 140 may be laminated in a planar shape on the light emitting surface of the lamp 110 , and is transparent or semi-transparent so that light having a wavelength of 200 to 230 nm is transmitted. In this way, sterilization is possible using light having a wavelength of 200 to 230 nm that has passed through the filter 140 . In particular, it is possible to sterilize by removing viruses, bacteria, spores, etc. using light of a wavelength of 222 nm.

The filter 140 may convert or absorb light having a wavelength of 230 to 270 nm into light of another wavelength in order to prevent light having a wavelength of 230 to 270 nm from being emitted through the filter 140 . Alternatively, it can be reflected. The filter 140 may include a nanophosphor that converts light having a wavelength of 230 to 270 nm into light having a different wavelength. Here, the nanophosphor may convert the light having a wavelength of 230 to 270 nm into light having a wavelength of 550 nm. As shown in FIG. 4 , the nanophosphor included in the filter 140 may be a nanofluorescent material that converts a wavelength 410 of 230 to 270 nm into a wavelength 420 of 550 nm. The nanophosphor may include LaPO4:Ce.Tb. Here, LaPO4:Ce.Tb is the chemical structure of the nanophosphor, and LaPO4:Ce.Tb has characteristics of absorbing light of a wavelength of 230 to 270 nm and emitting light of a wavelength of 550 nm. That is, it converts toxic light with a wavelength of 230 to 270 nm into light with a wavelength of 550 nm that is harmless to the human body.

The nanophosphor may be formed of particles of a predetermined size, and may be mixed with a polymer material such as urethane, resin, or resin to form the filter 140 . The nanophosphor may be formed in a particle size of 0.1 to 5 nm or less. Alternatively, the nano-phosphor may be stacked on or below the polymer layer including the polymer material. In this case, it may be formed to a thickness of 0.1 to 20 nm, and may be formed in a planar shape by a lamination method such as coating. It goes without saying that the particle size, mixing ratio, or thickness of the nanophosphor may be variously formed with a size, ratio, or thickness for converting light having a wavelength of 230 to 270 nm into light of another wavelength.

(옴스트롱) 이거나, 0.0001 내지 20

일 수 있다. 알루미늄 박막층의 두께는 0.1 내지 30

이거나, 그 이상일 수 있다. 여기서, 박막 코팅을 형성하는 알루미늄 및 주석의 혼합비 내지 알루미늄 박막층 및 주석 박막층의 두께는 230 내지 265 nm 파장의 빛을 차단하는 혼합비 내지 두께로 다양하게 형성될 수 있음은 당연하다.The filter 140 may include a thin film coating that blocks light in a predetermined range. In addition to or together with a method of converting a wavelength of light using a nanophosphor, it is possible to block light of a specific wavelength. Here, the thin film coating may be a thin film including aluminum (Al) and tin (Sn) that blocks light having a wavelength of 230 to 265 nm. In this case, the thin film coating may be formed by mixing aluminum and tin to form a thin film or an aluminum thin film layer and a tin thin film layer. When aluminum and tin are mixed, the proportion of tin may be 0.01 to 40%, or 0.01 to 20%. The remaining ratio may be aluminum or may further include other additives and the like. When the aluminum thin film layer and the tin thin film layer are formed, each thin film layer may be formed in a planar shape, and the tin thin film layer may be formed on the aluminum thin film layer, or the aluminum thin film layer may be formed on the tin thin film layer. Alternatively, one or more tin thin film layers and one or more aluminum thin film layers may be sequentially formed. The thickness of the tin thin film layer is 0.1 to 30

(Angstroms) or 0.0001 to 20

can be The thickness of the aluminum thin film layer is 0.1 to 30

It could be this, or more. Here, it is natural that the mixing ratio of aluminum and tin forming the thin film coating to the thickness of the aluminum thin film layer and the tin thin film layer may be variously formed in a mixing ratio or thickness that blocks light of a wavelength of 230 to 265 nm.

In the filter 140 , a thin film coating may be formed on the polymer material layer including the nanophosphor particles. By using the nanophosphor and the thin film coating, it is possible to convert toxic light having a wavelength of 230 to 270 nm and block light having a wavelength of 230 to 265 nm. Nanophosphor converts toxic 230 to 270 nm wavelength light to other wavelengths and at the same time blocks light of 230 to 265 nm wavelength using thin film coating. Light can be safely blocked.

5 and 6 are graphs showing experimental results of a sterilizer to which a filter is applied.

5 is a comparison of the wavelength of the lamp to which the filter 140 is not applied and the wavelength when the filter 140 is applied. emitted Light having a wavelength of 230 to 270 nm is a trace amount compared to the total light, but may have a significant adverse effect on the human body. In contrast, when the filter is applied ( 520 ), it can be confirmed that the toxic light having a wavelength of 230 to 270 nm is blocked or reduced to a harmless level to the human body.

6 is a comparison between the case where the filter is applied and the case where only glass is applied. have.

The lamp 110 may include a light source emitting light of a different wavelength as well as a light source emitting ultraviolet light. It can perform both the functions of sterilization and illumination, including a light source that emits light of different wavelengths for lighting as well as ultraviolet for sterilization. In this case, it may include a light source emitting visible light to infrared light, and may include a light source such as LED. The light source for emitting ultraviolet light for sterilization and the light source for emitting light for illumination may be formed by being divided into regions. A light source emitting ultraviolet light may be disposed inside, and a light source emitting light for illumination may be disposed outside, or vice versa. Alternatively, a plurality of light sources may be disposed adjacent to each other without division of regions, or may be disposed in various other shapes.

The front electrode layer 120 is bonded to the upper portion of the lamp 110 , and the rear electrode layer 130 is bonded to the lower portion of the lamp 110 to supply power to the lamp. The front electrode layer 120 is formed on the lamp 110 in a direction in which light is emitted from the lamp 110 and is bonded to the lamp 110 . At this time, as shown in FIG. 7 , the electrode 121 is formed on the surface bonding to the lamp 110 , and may be bonded to the lamp 110 through the electrode 121 . In the front electrode layer 120 , a hole 122 through which the light of the lamp passes is formed so as not to interfere with the irradiation of light emitted from the lamp 110 .

The rear electrode layer 130 is formed under the lamp 110 in a direction opposite to the direction in which light is emitted from the lamp 110 and is bonded to the lamp 110 . In this case, the electrode 131 is formed on the surface to be bonded to the lamp 110 , and may be bonded to the lamp 110 through the electrode 131 . A hole may be formed in the rear electrode layer 130 to correspond to the front electrode layer 120 as well.

The front electrode layer 120 and the rear electrode layer may form a PCB substrate, and a connector to which power is supplied from the outside may be formed. By supplying power input through the connector to the lamp 110 through the electrodes 121 and 131, light for sterilization may be emitted to the outside.

When bonding the front electrode layer 120 and the rear electrode layer 130 to the lamp, when gold having a thickness of several micrometers is used as a printed electrode, a clamp is used because the welding method with gold or nanometal is not easy. Thus, an electrode can be formed, but productivity may be reduced. In order to increase productivity and stability of quality, an electrode may be formed using a gasket, which is a halogen-free material having excellent heat resistance, electrical conductivity, compressive resilience, and lead wettability. Through this, productivity and quality stability can be improved.

The lamp 110 may have a light source formed therein, and a conductive line may be formed in an edge region surrounding the light source. The light source may be formed in a shape such as a circle or a rectangle, and the conductive line may also be formed in various shapes such as a circle or a rectangle in the edge region. The conductive line is a conductive line and may be formed by coating a metal or a conductive material. The electrode 121 of the front electrode layer 120 and the electrode 131 of the rear electrode layer 130 may be in contact with the conductive line to supply power. The electrode 121 of the front electrode layer 120 and the electrode 131 of the rear electrode layer 130 are positioned at positions corresponding to the positions of the conductive lines as shown in FIG. can be formed.

One electrode of the electrode 121 of the front electrode layer 120 and the electrode 131 of the rear electrode layer 130 may be a (+) electrode, and the other electrode may be a (-) electrode. By allowing a high-voltage current to flow through the (+) electrode and the (-) electrode, power may be supplied to the lamp 110 through a conductive line positioned between the (+) electrode and the (-) electrode.

Alternatively, only one of the front electrode layer and the rear electrode layer may be formed to supply power to the lamp.

The sterilization apparatus according to an embodiment of the present invention may be formed as a portable device. At this time, the portable sterilizer 200 according to an embodiment of the present invention may further include a housing 210 in which a handle 220 that can be gripped by a user is formed. The housing 210 may include one or more holes 211 through which an ultraviolet light source is formed and light is emitted.

The housing may be formed in various shapes, such as a luminaire shape, in addition to the shape shown in FIG. 8 . It may have a cylindrical shape, a hook may be formed so as to be installed on the ceiling, and a roller may be formed so that the position can be adjusted. In addition, the angle adjusting unit may be formed to change the light irradiation direction, or the height adjusting unit may be formed to adjust the height.

The portable sterilizer 200 may be held by a user and freely irradiated with sterilizing light. When the sterilization device is located at the upper part, such as a light fixture, sterilization may be insufficient or not performed at a location where the path of light does not reach due to the straight line of ultraviolet rays. By forming the sterilization device as a portable device having a handle, sterilization can be efficiently performed by scanning the chair or even a corner with the portable sterilization device 200 .

At this time, although the filter 140 removes light of a wavelength harmful to the human body, it is preferable not to directly irradiate the human body for a long time. To this end, the front electrode layer 120 and the rear electrode layer 130 may block power supply to the lamp 110 when the inclination of the emission surface with the ground exceeds 75 degrees. In order to prevent being irradiated to a person, when the inclination exceeds 75 degrees rather than in the downward direction, which is the ground direction, or when the emission surface is directed upward, the power supply is cut off to prevent light emission, thereby increasing safety.

In order to check the degree of inclination, when the inclination sensor for measuring the inclination of the lamp 110 and the inclination measured by the inclination sensor exceeds 75 degrees, it may further include a power cutoff unit for cutting off the power supply to the lamp. have. Here, the inclination sensor may be a gyro sensor, or may be another sensor capable of measuring a degree of inclination. When the inclination exceeds 75 degrees according to the sensing value of the inclination sensor, the power cutoff unit cuts off the power supply to the lamp 110 . The power cut-off unit may be composed of a switch such as a relay. The switch may be an electrically operated electrical switch. Alternatively, when the ramp 110 faces the ground, the electrode is connected to the conductive line by gravity, and when the slope of the ramp 110 exceeds 75 degrees, the downward force is reduced, and the electrode is spaced apart from the conductive line. It may be a physical switch formed of a spring that operates as much as possible.

In addition, a counter for counting time from the time when power is applied to the conductive line may be further included, and if the time of the counter is 10 seconds or more, the power supply to the lamp may be cut off. Power is supplied to operate only for a time necessary for sterilization, and when a preset time elapses after power is supplied, the power supply to the lamp may be cut off. The time to cut off the power may be set between 10 and 30 seconds.

The sterilization device according to an embodiment of the present invention is formed of a sterilization lamp, and can be applied to various devices. A germicidal lamp according to an embodiment of the present invention includes an ultraviolet light source and a filter for filtering 230 to 270 nm wavelength emitted from the ultraviolet light source. The filter may include a nanophosphor that converts the light of the 230 to 270 nm wavelength into light of another wavelength, and the ultraviolet light source may be a 222 nm KrCl excimer lamp.

In this way, the formed sterilization lamp can be applied to all means of transportation, such as a vehicle interior light. In the case of a vehicle, it can be installed on the ceiling, start before departure, sterilize for 10-20 seconds, and automatically flash. In addition, it can be applied to a chair, a device that scans and sterilizes corners, a device for removing viruses in preparation for biological warfare by a soldier's portable, and a luminaire installed inside a ship's cabin and a tank.

In addition, it can be applied to a place requiring sterilization in an operating room after surgery, such as a hospital. For example, when a corona patient occurs in a nursing home (hospital) used by the elderly with weakened immune function, orthopedic surgery, oriental medicine hospital, operating room in a general hospital, emergency room, etc., it becomes difficult to treat the next emergency patient. It can be applied where removal is urgent. In addition, it can be installed in government offices such as ward offices, community centers, civil service offices, public health centers, temporary medical centers, etc., and can be installed in places where a large number of people gather, such as Jeongseon Casino, karaoke, cruise ship cabins, and churches.

9 is an actual embodiment of the lamp 910, the front electrode layer 920, and the rear electrode layer 930. The lamp 910 is formed in a planar shape so as to emit surface light, and the front electrode layer 920 and the rear electrode layer 930. ), a hole may be formed so that light can be emitted. In addition, a coupling portion may be formed at one corner so that the lamp 910, the front electrode layer 920, and the rear electrode layer 930 can be firmly coupled. The light source or the conductive line of the lamp may not be formed at the position of the coupling part.

The sterilization device according to an embodiment of the present invention may be provided as a single device covered with a housing. As shown in Fig. 10, it is implemented as a rectangular device to which two germicidal lamps are applied, or as a portable germicidal lamp in which a handle is formed as shown in Figs. can be formed. In addition, as shown in FIG. 13 , it may be formed in a bulb shape, or may be formed in a down light shape as shown in FIG. 14 . In addition, as shown in FIG. 15 , it may be formed in various lamp shapes such as a raceway to perform sterilization.

The sterilization apparatus according to an embodiment of the present invention may include an LED as a light source in addition to the ultraviolet lamp for sterilization. Here, the LED may be a light source for lighting. Through this, it is possible to provide a sterilization and lighting function by emitting light using an ultraviolet light source and an LED light source. At this time, in order to prevent interference with the light intensity of the lamp for sterilization of the light emitted from the LED light source, the temperature of the LED color may be applicable in a range of 2800K to 6000. For example, 3000K, 4000K, 5400K, etc. may be applied. The brightness of the LED may be 800 ~ 1000Lm so as not to interfere with the ultraviolet light source including 222nm. For example, an LED with a brightness of 8W can be used in 800-1000Lm. In the case of forming an LED with an LED color temperature of 3000K, 4000K, and 5400K with a 222 nm microplasma lamp at an LED brightness of 900 lm and 1000 lm, it can be confirmed that the intensity of the 222 nm microplasma lamp is not affected within the error range. , through this, it can be confirmed that the sterilization function does not fall even if the LED for lighting is formed together.

When the LED light source is included in the lamp, the LED light source may be arranged in an SMD type at the edge of the lamp, and the 222 nm plasma lamp may be arranged at the center of each lamp or at an appropriate distance from the LED light source. As shown in Figure 16, a 222nm plasma lamp is formed in the center, and an LED light source can be arranged at the edge. Alternatively, the LED light source may be placed in the center, the 222 nm plasma lamp may be placed on the edge, and the LED light source may be placed in various positions.

In addition to the LED light source, various light sources such as a halogen light source may be included. In this case, it may be formed to have characteristics of light that does not interfere with the ultraviolet light source including 222 nm.

The results of verifying the removal performance of the corona (COVID-19) virus by applying a filter filtering a wavelength of 230 to 270 nm to a 222 nm KrCl excimer lamp in the sterilization apparatus according to an embodiment of the present invention are as follows. The light irradiation distance was 4 cm, and the irradiation time was 10 seconds, 20 seconds, 30 seconds, 1 minute, 2 minutes, 5 minutes, and 10 minutes. Each of the stock solutions, 10-1, 10-2, 10-3, 10-4, 10-5, and 10-6 were diluted and inoculated. Vero cells were observed for 5 days after inoculation in a 60 to 70% 96 well plate, and the effect of reducing the virus concentration was examined compared to the control group. To determine the degree of virus suppression, the virus titer is calculated using the Kaerber and Reed method by repeating the experiment 3 times, and the virus culture medium is collected after cellular degeneration is observed to isolate the virus nucleic acid, and real-time PCR using the Corona Virus Precision Diagnosis Kit was carried out.

As a result of the first test, the virus removal rate is as follows.

As a result of the second test, the virus removal rate was as follows.

As a result of the third test, the virus removal rate was as follows.

As shown in the above results, it was confirmed that more than 99.99% of the corona virus was removed when irradiated for 1 minute or longer, 99.9% when irradiated for 30 seconds or more, and 90% or more when irradiated for 10 seconds.

As such, the sterilization apparatus according to the embodiment of the present invention has high sterilization ability and is harmless to the human body by removing wavelengths harmful to the human body. In addition, when formed in the form of a luminaire, it can be applied with LED lighting anywhere in a space with a ceiling, and when implemented as a portable device, sterilization is possible in more various locations.

A person of ordinary skill in the art related to this embodiment will understand that it can be implemented in a modified form within a range that does not deviate from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

100: sterilizer
110, 910: lamp
120, 920: front electrode layer
130, 930: back electrode layer
140: filter
121, 131: electrode

Claims (19)

a planar lamp in which at least one light source emitting ultraviolet light is disposed in the inner region;
a filter coated or laminated on the light emitting surface of the lamp to filter a wavelength of 230 to 270 nm;
and a front electrode layer and a rear electrode layer bonded to the upper and lower portions of the lamp to supply power to the lamp,
The front electrode layer is a sterilizer in which a hole through which the light of the lamp passes is formed. According to claim 1,
The filter is
A sterilization device comprising a nano-phosphor for converting the light of the 230 to 270 nm wavelength into light of another wavelength. 3. The method of claim 2,
The nano-phosphor is a sterilization device for converting the light of the 230 to 270 nm wavelength into light of a wavelength of 550 nm. 3. The method of claim 2,
The nanophosphor is a sterilization device comprising LaPO4:Ce.Tb. According to claim 1,
The filter is
A sterilization device comprising a filter that blocks the light of the 230 to 270 nm wavelength by deposition. 6. The method of claim 5,
The filter is
A sterilization device comprising a filter that blocks the light of the 230 to 270 nm wavelength by Sn and Al deposition. According to claim 1,
The at least one light source emitting ultraviolet light is a 222 nm KrCl excimer light source. According to claim 1,
The lamp has a conductive line formed in the edge region,
A sterilizer for supplying power by being in contact with the conductive line of the front electrode layer and the rear electrode layer. According to claim 1,
It further includes a housing in which a handle part that can be gripped by a user is formed,
The front electrode layer and the rear electrode layer,
When the inclination of the exit surface with the ground exceeds 75 degrees, the sterilization device cuts off the power supply to the lamp. According to claim 1,
a tilt sensor for measuring the inclination of the ramp; and
When the inclination measured by the inclination sensor exceeds 75 degrees, the sterilization apparatus further comprising a power cutoff unit for cutting off the power supply to the lamp. According to claim 1,
One electrode layer of the front electrode layer and the rear electrode layer is a (+) electrode, and the other is a (-) electrode. According to claim 1,
Further comprising a counter for counting the time from the time when power is applied to the lamp,
A sterilization device that cuts off the power supply to the lamp when the time of the counter is 10 seconds or more or an arbitrary set time. According to claim 1,
The filter is a sterilization device that blocks light of a wavelength of 230 to 265 nm. UV light source; and
A germicidal lamp comprising a filter for filtering 230 to 270 nm wavelength emitted from the ultraviolet light source. 15. The method of claim 14,
The filter is
A germicidal lamp comprising a nanophosphor for converting the light of the 230 to 270 nm wavelength into light of another wavelength. 16. The method of claim 15,
The nanophosphor is a germicidal lamp comprising LaPO4:Ce.Tb. 15. The method of claim 14,
The ultraviolet light source is a 222 nm KrCl excimer lamp, a germicidal lamp. 15. The method of claim 14,
The filter is a germicidal lamp that blocks light with a wavelength of 230 to 265 nm. 15. The method of claim 14,
The ultraviolet light source is
222 nm KrCl excimer lamp light source; and
Germicidal lamp with LED light source.

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