KR102552161B1 - Sterilizer using LED - Google Patents

Abstract

The present invention sterilizes germs and viruses using visible light of a wavelength of 405 nm that is harmless to the human body emitted from LEDs, and can effectively disinfect the space as well as the surface of an object. It is to provide an LED sterilizer capable of increasing the sterilization distance and sterilization power by using a lens and at the same time increasing the diffusivity of light by attaching a light diffusion film to the surface of the lens and preventing the glare of light emitted from the LED.

Description

LED Sterilizer {Sterilizer using LED}

The present invention relates to an LED sterilizer, and more particularly, to sterilize germs and viruses using visible light of a wavelength of 405 nm harmless to the human body, thereby effectively sterilizing the space as well as the surface of an object. It's about the sterilizer.

Biological causes that cause human diseases, such as bacteria, viruses, and fungi, are always present around us, and they are the most common in the recent coronavirus infection (COVID-19) following SARS and MERS. As you can see, it can pose a great threat to humans at any time. Accordingly, the need for sterilization and/or disinfection (hereinafter collectively referred to as 'sterilization') is increasing in the living space in which we live, and accordingly, an ultraviolet (UV) sterilizer is used to prevent various bacterial infections. Various types of sterilization products have been released, including

The ultraviolet sterilizer utilizes the sterilization function of ultraviolet rays. It is a method of sterilizing objects to be sterilized inside a certain space where an ultraviolet lamp is installed and irradiating ultraviolet rays to sterilize them. Since it is short, it is mainly used in a narrow space.

Korean Patent Registration No. 2189229 "Laser sterilizer for duct using UV-C LED" uses UV-C with a wavelength of 100 to 280 nm, which is known to have the best sterilization effect among ultraviolet rays, to sterilize the inside of the duct. However, although wavelengths around 265 nm are most effective in sterilizing viruses and bacteria, there is a problem that excessive exposure to the human body causes burns, skin cancer or cataracts, and also generates ozone gas that is harmful to the respiratory system by exciting oxygen in the air. . Therefore, there is a problem that the sterilizer is unsuitable for use in a living space where people live rather than in a duct.

U.S. Patent Registration No. 10894104 "Surface or space sterilizer using LED" is composed of a hollow inner transparent tube and an outer transparent tube in the form of a double tube, a substrate is installed between the double tubes, and a surface facing outward from the substrate LED is mounted to project light to the outside of the outer transparent tube to sterilize the space, and the vertical ventilation hole formed in the hollow of the inner transparent tube acts as an air-blow passage. It is configured to do so, and the air introduced from the outside at the lower part of the inner transparent tube and the outer transparent tube is discharged to the upper part through the vertical ventilation hole by operating the circulator, and the substrate installed between the inner transparent tube and the outer transparent tube An ultraviolet lamp is installed on the side facing the inside, and ultraviolet rays generated from the ultraviolet lamp are projected through a plurality of holes formed in the inner transparent tube to sterilize air passing through the vertical ventilation hole. However, the above patent has the following problems.

First, the body of the sterilizer is composed of a double tube of an inner transparent tube and an outer transparent tube, and a substrate is installed between the double tubes, an LED and an ultraviolet lamp are installed on the substrate, and a filter and a circulator are installed to circulate air. The configured structure is too complex, and if there is a problem with any one LED, UV lamp, or circulator, the entire structure must be disassembled and repaired, so there is a problem in maintenance.

Second, since LED generates a lot of heat during lighting, the most important thing in LED is a heat dissipation means for cooling the generated heat. Since there is no heat dissipation means that can release the heat generated while generating light from the LED, it cannot be used for a long time, and there are many problems such as easy failure of the LED or UV lamp due to heat.

Third, since only the convex lens is used to diverge the light emitted from the LED, the convex lens serves to collect the light, and since the light generated from the LED does not diffuse, glare occurs when a person looks at the sterilizer, so people live or work There is a problem in using it in a living space or office.

Fourth, there is a problem that a separate fixing means is required to fix the board floating in the air because the board to mount the LED must be installed in the space formed between the inner transparent tube and the outer transparent tube.

The present invention has been devised to solve the above problems, and an object of the present invention is to sterilize bacteria and viruses using visible light of a wavelength of 405 nm harmless to the human body emitted from LEDs to clean the surface of objects as well as space. It can effectively sterilize bacteria, increase the sterilization distance and sterilization power by using a convex lens or spot lens, and at the same time, attach a light diffusion film to the surface of the lens to increase the diffusivity of light and reduce the amount of light emitted from the LED. It is to provide an LED sterilizer capable of preventing glare.

The LED sterilizer according to the present invention is made of aluminum, has a certain length, and has a columnar body in which a hollow part is formed; a PCB substrate attached to an outer surface of the body and having LED chips mounted on one surface at regular intervals; a lens that is attached to each part of the PCB substrate where each LED chip is mounted and focuses light emitted from the LED chip; It is coupled to the body and includes a transparent cover positioned in front of the lens attached to the PCB board, and the LED chip is of two types having different VF (Forward Voltage) values, and is mounted on the PCB board. The two types of LED chips are characterized in that they are alternately arranged.

Preferably, the lens is a spot lens or a convex lens, and a light diffusion film for diffusing the focused light is further attached to the front surface of the lens.

Preferably, one type of the LED chip is an LED having a wavelength of 405 nm, and the other type is an LED having a wavelength of 405 nm and having a color temperature of 4,000 to 6,000K.

Preferably, the viewing angle of the first lens attached to the portion where the LED chip having a wavelength of 405 nm is mounted is the first lens attached to the portion where the LED chip having a wavelength of 405 nm and a color temperature of 4,000 to 6,000K is mounted. 2 Use a lens that is smaller than the viewing angle of the lens.

Preferably, the body, a body of a rectangular shape in which a hollow part (中空部) is formed; a substrate attachment portion provided with a concave portion having a certain width and a certain depth over the entire length of the outer circumferential surface of the main body; It is composed of a corner portion formed between the substrate attachment portion and the substrate attachment portion disposed adjacent to each other, the PCB substrate is attached to the substrate attachment portion, and the transparent cover is inserted and coupled from the front of the substrate attachment portion, and the main body And the surface facing the outside of the transparent cover and the corner portion form a single square shape, a cap is coupled to the upper end of the body, and a pedestal is further provided at the lower end of the body, so that the sterilizer is placed on the pedestal will be installed vertically.

Preferably, the body is formed so that one side is open so that the cross section is 'c' shape; It is composed of a board attachment portion inserted and coupled to close the open surface of the main body, a PCB board is attached to the board attachment portion, and the transparent cover is inserted and coupled from the front of the board attachment portion, and the main body and The surface of the transparent cover forms a single square shape, a cap is coupled to one end of the body, and a blocking plate is coupled to the other end of the body, and the rear surface of the body is hung on the wall. It is configured to be able to

The LED sterilizer according to the present invention is configured by attaching a PCB substrate on which an LED chip is mounted to the surface of a body made of aluminum serving as a heat sink, and has a simple structure and can effectively dissipate heat generated from the LED. In addition, since a convex lens or spot lens is attached to each LED chip, the sterilization distance and sterilization power can be increased, so that one sterilizer can sterilize a wide space to reduce damage caused by bacteria or viruses. Since the light diffusion film is attached to the surface, it can prevent the glare of the light emitted by the LED by increasing the diffusivity of light, and it sterilizes germs and viruses using harmless wavelengths of visible light to the human body. It can be used very usefully for living spaces such as cafes, hospitals, etc. In addition, since two types of LED chips with different VF (Forward Voltage) values are alternately arranged on the PCB board, it is possible to adjust the distance, intensity, range, etc. of sterilization and disinfection power.

1 is a perspective view showing a stand-type sterilizer according to the present invention.
2 is a view for explaining the structure of the sterilizer shown in FIG. 1;
FIG. 3 is an exploded view of the sterilizer shown in FIG. 1; FIG.
4 is a perspective view illustrating a wall-mounted sterilizer.
FIG. 5 is an exploded view of FIG. 4 .

The biggest technical feature of the LED sterilizer according to the present invention is to effectively disinfect the space as well as the surface of the object by using visible light of a wavelength harmless to the human body generated from LED chips of different types with different VF values, The convex lens or spot lens is used to increase the sterilization distance and sterilization power, and the light diffusion film is attached to the surface of the lens to increase the diffusivity of the light emitted from the LED and to prevent glare.

In general, UV-C with a wavelength of 100 to 280 nm is known to have the best sterilization and sterilization effect on bacteria and viruses, but since it has adverse effects on human eyes and skin, sterilization and sterilization using UV-C In order to do this, sterilization and sterilization must be carried out in a space where there are no people or animals. On the other hand, UV-B with a wavelength of 280 to 320 nm or UV-A with a wavelength of 320 to 400 nm also has some sterilizing power, but has a harmful effect on the human body because it is in the ultraviolet range. Therefore, in the present invention, an LED that generates a specific wavelength of 400 to 410 nm in a narrow band even at a wavelength of 400 to 480 nm that is harmless to the human body and has sterilization and sterilization power as well as a wavelength of visible light is used, and among them, a central wavelength of 405 nm is used.

The sterilizer 10 according to the present invention sterilizes a surface or space using light generated from an LED, and sterilizes bacteria and viruses by using visible light of a wavelength of 405 nm harmless to the human body. It can be used very usefully in various spaces such as living spaces such as hospitals, office spaces, and living spaces. The sterilizer 10 has a basic configuration of a columnar body 11, a PCB substrate 13 on which an LED chip 131 is mounted, a lens 132 for concentrating light, and a transparent cover 15. It is configured to include, and can irradiate LED light in a specific direction or all directions.

First, the stand type sterilizer 10 will be described with reference to FIGS. 1 to 3 . The body 11 is made of aluminum, has a certain length, and has a hollow column shape, and the planar shape of the column can be made of a polygon such as a triangle or a quadrangle or a circle. Since the body 11 is made of aluminum material having good thermal conductivity, it is possible to quickly dissipate heat generated while generating light from the LED. In the present invention, the rectangular body shown in the accompanying drawings is described as an embodiment, but it is not necessarily limited to the rectangular shape, and the shape can be changed without any technical difficulties and is equally applied to bodies of various shapes. make it clear in advance The sterilizer 10 using the rectangular body 11 can irradiate light from one side to four sides because LEDs can be disposed on each side of the rectangular shape.

The PCB substrate 13 is attached to the outer surface of the body 11, and on one side, circuits and components for operating the sterilizer are mounted, as well as a plurality of LED chips 131 are mounted at equal intervals, and the LED chips ( 131), each lens 132 is mounted. In addition, one of the technical features of the present invention is that the LED chip 131 may use the same type of chip, but different types of chips are used. One type is an LED having no color temperature and having a wavelength of 405 nm (hereinafter referred to as 'first LED'), and the other type is an LED having a wavelength of 405 nm and having a color temperature of 4,000 to 6,000K (hereinafter referred to as 'second LED'). ') is.

A forward voltage (VF) value refers to a voltage for driving an LED, and the first LED and the second LED use different VF values. The first LED has a low VF value (about 3.6V) and emits only purple color and has no lighting effect, and the second LED has a high VF value (about 6.2V) and emits various colors and has a lighting effect. The second LED connects two 405nm narrowband chips in series or parallel, and then coats one chip with a yellow phosphor to use it as a '405nm-based white LED', and various colors depending on the phosphor coated. will get Two types of LED chips mounted on the PCB substrate 13 are alternately disposed. Since the first LED and the second LED are used in various fields and are not characteristic configurations unique to the present invention, a detailed description thereof will be omitted. In order to drive the LED, an LED driving converter must be provided, and a substrate (not shown) on which the LED driving converter is mounted is preferably installed in the hollow part 113 of the body 11.

The lens 132 is attached to each LED chip 131 mounted on the PCB substrate 13 and serves to focus the light emitted from the LED chip, and depending on the lens used, the light emitted from the LED chip 131 The distance, range, and intensity of the sterilization and sterilization power of light can be adjusted. Each lens has a different viewing angle. For example, a spot lens with a good ability to focus light has a viewing angle of 25 degrees, 40 degrees, 60 degrees, 120 degrees, etc., and a convex lens is manufactured with a viewing angle of 45 degrees, 60 degrees, 90 degrees, etc., and of course, the viewing angle may be manufactured at other angles.

In order to ensure effective sterilization power, sterilization distance, and sterilization area of the sterilizer, the viewing angle of the first LED should be smaller than that of the second LED. Because, long-distance sterilization is performed by the first LED having a narrow lens viewing angle, and short-distance sterilization is performed by the second LED having a wide lens viewing angle. For example, it is preferable that the viewing angle of the first LED is 25 degrees to 40 degrees and the viewing angle of the second LED is 60 degrees to 120 degrees. When the angle of view of the lens narrows, the irradiation radius and area decrease, but instead of the reduced angle, radiant flux (radiant energy propagating through space in unit time) increases and the reach of the radiant flux becomes longer.

The reason for using the lens is to increase the sterilization distance and sterilization power. The lens 132 uses a spot lens or a convex lens, and the spot lens can further increase the sterilization distance and sterilization power. However, since the spot lens is good at concentrating light, the light emitted from the LED is too strong, causing severe glare. To reduce such glare, light diffusion is performed to diffuse the focused light on the front surface of the lens. It is preferable to attach a film to increase light diffusivity, and one of the important technical features of the present invention is that a light diffusing film is attached to the surface of a lens used to increase light diffusivity and reduce glare.

The transparent cover 15 is coupled to the body 11 and positioned in front of the lens 132 attached to the PCB substrate 13 to cover the PCB substrate 13 and the lens 132 so as not to be exposed to the outside. As a configuration, the material of the transparent cover 15 should have good light diffusing performance, and it is preferable to use transparent polycarbonate (PC) or transparent acrylic.

In the drawings, a body for irradiating light to three surfaces is shown, but the body may be manufactured to emit light on one surface or all four surfaces. This will be described with reference to FIG. 3 . The body 11 includes a rectangular main body 111 having a hollow part 113 formed therein, and a concave portion having a certain width and a certain depth over the entire length on three side surfaces of the main body 111. ) is provided and formed, and a corner portion 114 formed between the substrate attachment portion 112 and the substrate attachment portion 112 disposed adjacent to each other.

A PCB substrate 13 on which LEDs are mounted is attached to the substrate attachment portion 112, and a substrate on which an LED driving converter is mounted is mounted inside the hollow part 113. Since the corner part 114 is located at the corner part of the square shape, the surface is exposed to the outside and also serves to dissipate heat generated from the LED. In order to irradiate light only on one side, the substrate attachment portion 112 is formed on only one side, and in order to irradiate light on four sides, the substrate attachment portion 112 needs to be formed on four sides. You will be able to do it easily and without difficulty.

The PCB substrate 13 is attached to the board attachment part 112, and the transparent cover 15 is inserted and coupled from the front of the board attachment part 112, and the main body 111 and the transparent cover 15 and the corner part The outward facing surface of (114) forms a square shape. A cap 17 is coupled to the top of the body 11, and a stand 20 is provided at the bottom of the body 11, so that the sterilizer 10 is installed vertically on the top of the stand 20. It is used as a stand type sterilizer. The stand type is convenient because it can be used while moving the location where the sterilizer 10 is placed.

4 and 5 show a wall-mounted sterilizer 30. The wall-mounted type is an embodiment that is used in a fixed position after being hung at a certain position, such as a wall, and is usefully used to irradiate light in one direction. The body 31 of the wall-mounted sterilizer includes a body 311 formed so that one side is open and the cross section is 'c' shape, and a substrate inserted and coupled to close the open side of the body 311 The attachment part 312 is provided, the PCB board 33 to which the LED chip and the lens are attached is attached to the board attachment part 312, and the transparent cover 35 is inserted from the front of the board attachment part 312 and combined. And, the surface of the main body 311 and the transparent cover 35 forms one square shape, and a cap 37 is coupled to one end of the body 31, and the body 31 A blocking plate 39 is coupled to the other end. The rear of the body 31 should be provided with a means such as a hook so that it can be hung or attached to a wall. Since the PCB substrate 33 to which the LED chip and the lens are attached is the same as that of the stand type, duplicate descriptions are omitted.

The sterilizer of the present invention may be operated by a user operating a button in a control unit (not shown), but the operation may be controlled with a remote control, and since such operation operation is universally used in various electrical and electronic products, a detailed description is not given. omit

The above description is illustrative of the present invention, and the embodiments disclosed in the specification are not intended to limit the technical idea of the present invention, but are for explanation. Various modifications and variations will be possible without departing from the technical idea of Therefore, the protection scope of the present invention should be construed by the matters described in the claims, and technical matters within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: sterilizer 11: body
111: main body 112: board attachment part
113: hollow part 114: corner part
13: PCB substrate 131: LED chip
132: lens 15: transparent cover
17: cap
20: pedestal
30: sterilizer 31: body
311: main body 312: board attachment part
33: PCB substrate 35: transparent cover
37: cap 39: blocking plate

Claims (6)

In a sterilizer for sterilizing a surface or space using light generated from an LED,
The sterilizer,
a columnar body made of aluminum material, having a certain length and having a hollow part formed therein;
a PCB substrate attached to an outer surface of the body and having LED chips mounted on one surface at regular intervals;
a lens that is attached to each part of the PCB substrate where each LED chip is mounted and focuses light emitted from the LED chip;
a transparent cover coupled to the body and located in front of the lens attached to the PCB substrate;
It is composed of,
Two types of LED chips having different VF (Forward Voltage) values are used, and two types of LED chips mounted on a PCB board are alternately arranged,
In the LED chip, one type is a first LED having a wavelength of 405 nm without a color temperature, and the other type is a second LED having a wavelength of 405 nm and a color temperature of 4,000 to 6,000K,
An LED sterilizer, characterized in that the viewing angle of the lens attached to the part where the first LED chip is mounted is smaller than the viewing angle of the lens attached to the part where the second LED chip is mounted.
According to claim 1,
The lens is a spot lens or a convex lens, and an LED sterilizer, characterized in that a light diffusion film for diffusing the focused light is further attached to the front surface of the lens.
delete delete The method of claim 1, wherein the body,
A body having a rectangular shape with a hollow part formed therein;
a substrate attachment portion provided with a concave portion having a certain width and a certain depth over the entire length of the outer circumferential surface of the main body;
a corner portion formed between the substrate attachment portion and the substrate attachment portion disposed adjacent to each other;
It is configured to include, the PCB board is attached to the board attachment portion, the transparent cover is inserted and coupled from the front of the board attachment portion, and the surface facing the outside of the main body, the transparent cover, and the corner portion has a single rectangular shape. will be achieved,
An LED sterilizer, characterized in that a cap is coupled to the upper end of the body, and a pedestal is further provided at the lower end of the body, so that the sterilizer is installed vertically on the upper part of the pedestal.
The method of claim 1, wherein the body,
A main body formed so that one side is open and the cross section is 'c'shape;
a substrate attachment portion inserted into and coupled to close the open surface of the main body;
It is configured to include, the PCB substrate is attached to the board attachment part, the transparent cover is inserted and coupled from the front of the board attachment part, and the surface of the main body and the transparent cover form one square shape,
An LED sterilizer, characterized in that a cap is coupled to one end of the body, a blocking plate is coupled to the other end of the body, and the rear surface of the body can be hung on the wall.

Images