JP3232763U - UV sterilizer and light source module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultraviolet sterilizing device having improved safety against deep ultraviolet rays. SOLUTION: An ultraviolet sterilizing device 10 has a shielding property against deep ultraviolet light 54 and houses a box body 12 in which an object to be sterilized can be taken in and out, and a depth that radiates deep ultraviolet light 54 into an internal space 24 of the box body 12. An ultraviolet light source, a high-intensity visible light LED that radiates visible light 55 into the internal space 24 of the box body 12, and a high-intensity visible light LED that radiates visible light 55 when radiating deep ultraviolet light 54 from a deep-ultraviolet light source. It has a control device 14 to perform. [Selection diagram] FIG. 1A

Description

The present invention is to improve the safety against deep ultraviolet rays with respect to the ultraviolet sterilizing device using deep ultraviolet rays and the light source module that can be used for the ultraviolet sterilizing device.

Various ultraviolet sterilizing devices (referring to sterilizing, sterilizing, and inactivating viruses or bacteria) using deep ultraviolet rays (UV-C, invisible light having a wavelength of 200 nm to 280 nm) have been proposed. For example, in Patent Document 1, a deep ultraviolet LED is installed inside the box, and an object to be sterilized such as a medical device is housed in the box so that it can be taken in and out, and sterilized by deep ultraviolet rays radiated from the deep ultraviolet LED. An ultraviolet sterilizer that sterilizes an object is described.

Deep UV rays are invisible to the human eye, where they can damage the human eye and skin. For this reason, the user may be injured in the eyes and skin without noticing that he / she is exposed to deep ultraviolet rays. Therefore, in the ultraviolet sterilizer of Patent Document 1, a safety switch for detecting the opening and closing of the lid of the box body is provided so that the deep ultraviolet LED does not irradiate from deep ultraviolet rays when the lid is in the open state. In addition, a first visible light source is installed outside the box so that visible light is emitted from the first visible light source only when deep ultraviolet rays are emitted from the deep ultraviolet LED, and the deep ultraviolet LED emits visible light. The user is notified that deep ultraviolet rays are being emitted. Further, a second visible light source is installed outside the box so that visible light is radiated from the second visible light source only when the box is closed, so that the box is closed. I am trying to notify the user of this.

JP-A-2018-175506

In the ultraviolet sterilizing device described in Patent Document 1, a first visible light source is installed outside the box body, and visible light is radiated from the first visible light source only when deep ultraviolet rays are radiated from the deep ultraviolet LED. This is done to notify the user that deep ultraviolet rays are being emitted from the deep ultraviolet LED. However, in this case, the user needs to understand the meaning of lighting the first visible light source installed outside the box as knowledge in advance, and it is a risk avoidance measure for children and those who use it without reading the instruction manual. Is not enough.

The present invention solves the above-mentioned problems, and provides an ultraviolet sterilizer having improved safety against deep ultraviolet rays and a light source module that can be used for the ultraviolet sterilizer.

The ultraviolet sterilizing device of the present invention has a shielding property against deep ultraviolet rays between the internal space and the external space, and stores the sterilizing object in and out of the box body and the deep ultraviolet rays in the internal space of the box body. A deep ultraviolet light source that radiates, a high-intensity visible light LED that radiates visible light into the internal space of the box body, and the visible from the high-intensity visible light LED when the deep ultraviolet light is radiated from the deep ultraviolet light source. It has a control device that emits light. According to this, since the visible light from the high-intensity visible light LED makes the human eye feel dazzling, the user can unknowingly keep his eyes away from the visible light, and as a result, the eyes are also seen from deep ultraviolet rays. (So to speak, the deep ultraviolet light is simulated by a high-intensity visible light LED to make the user avoid the deep ultraviolet light), and the danger due to the deep ultraviolet light can be avoided. The brightness of the visible light emitted by one high-intensity visible light LED is, for example, the brightness of 1000 millicandelas or more and the luminous flux of 0.1 lumen or more, preferably the luminous flux of 2500 millicandelas or more and the luminous flux. The luminous flux can be set to 0.24 lumens or more, more preferably 5000 millicandelas or more and the luminous flux 0.48 lumens or more, and more preferably the light intensity 8000 millicandelas or more and the luminous flux 0.76 lumens or more. Further, the number of high-intensity visible light LEDs used in one ultraviolet sterilizer is dazzling to the human eye depending on the volume of the box of the ultraviolet sterilizer and the brightness of the high-intensity visible light LED used. It can be set to an appropriate number that is convenient for making the person feel the sensation.

In the ultraviolet sterilization device of the present invention, the deep ultraviolet light source can be, for example, a deep ultraviolet LED. Unlike other ultraviolet light sources, the light emitted by the deep ultraviolet LED contains almost no visible light component, so even if the deep ultraviolet LED is on (lit), it is possible for the human eye to recognize that it is on. It is difficult and the risk is high. Therefore, the usefulness of this device is particularly high when a deep ultraviolet LED is used as the deep ultraviolet light source.

In the ultraviolet sterilization device of the present invention, it is possible that the light source module in which the deep ultraviolet LED and the high-intensity visible light LED are mounted side by side on a common base is arranged in the internal space of the box body. .. According to this, the ultraviolet sterilization device of the present invention can be easily manufactured by arranging the light source module in which the deep ultraviolet LED and the high-intensity visible light LED are mounted side by side on the base in the internal space of the box body. ..

In the ultraviolet sterilization device of the present invention, the box body has a metal plate on the wall surface, the light source module has a metal plate on the base, and the metal plate on the base is on the wall surface of the box body. It may have a configuration in which the light source module is fixed to the metal plate and attached to the box body. According to this, the heat generated by the deep ultraviolet LED and the high-intensity visible light LED can be dissipated from the metal plate of the base of the light source module to the metal plate of the wall surface of the box body.

In the ultraviolet sterilization device of the present invention, the light source modules may be arranged on the wall surfaces facing each other in the box, for example. According to this, the sterilization target can be sterilized by irradiating the object to be sterilized with deep ultraviolet rays from both sides (front and back or top and bottom or left and right).

The light source module of the present invention has a configuration in which a deep ultraviolet LED and a high-intensity visible light LED are mounted side by side on a common base. According to this, by lighting the deep ultraviolet LED and the high-intensity visible light LED at the same time, the deep ultraviolet rays can be simulated and visualized by the high-intensity visible light LED light, and the danger due to the deep ultraviolet rays can be avoided.

In the light source module of the present invention, the base has a metal substrate having a function as a mirror surface reflector and a heat radiating plate, and the deep ultraviolet LED and the high-intensity visible light LED are mounted on the metal substrate. can do. According to this, the metal substrate is not limited to the function of mounting the deep ultraviolet LED and the high-intensity visible light LED, and can function as a mirror surface reflecting plate and a heat radiating plate for the deep ultraviolet LED and the high-intensity visible light LED. ..

In the light source module of the present invention, the deep ultraviolet LED and the high-intensity visible light LED can be mounted on a common printed circuit board, and the printed circuit board can be mounted on the metal substrate. According to this, by mounting the deep ultraviolet LED and the high-intensity visible light LED on a common printed substrate, the light source module can be easily assembled and the light source module can be compactly configured.

In the light source module of the present invention, the metal substrate may have a base portion and blade portions that rise diagonally on both sides of the base portion, and the printed circuit board may be mounted on the base portion. According to this, the metal substrate has a printed substrate mounted on the base, and the blades reflect deep ultraviolet rays emitted from the deep ultraviolet LED and high-intensity visible light emitted from the high-intensity visible light LED, and the deep ultraviolet LED. And the heat generated by the high-intensity visible light LED can be radiated.

In the light source module of the present invention, the printed circuit board comprises a series connection circuit in which a plurality of the deep ultraviolet LEDs are connected in series and a series connection circuit in which a plurality of the high-intensity visible light LEDs are connected in series. can do. According to this, when the power supply device is configured separately from the light source module, the light source module and the power supply device can be connected with a small number of power supply cables.

The light source module of the present invention may have a configuration in which the high-intensity visible light LEDs are arranged adjacent to each other on both sides of the deep ultraviolet LED. According to this, deep ultraviolet light is radiated from a position between at least two places where high-intensity visible light is emitted. Therefore, whenever the user sees the light source position of deep ultraviolet light, the light source position of high-intensity visible light is always emitted. At the same time, the user can feel the glare of high-intensity visible light and unknowingly keep his eyes away from deep ultraviolet light.

In the light source module of the present invention, the high-intensity visible light LED can be configured by, for example, a high-intensity blue LED. According to this, since blue light (blue light) tends to make the human eye feel dazzling, the effect of the present invention can be particularly enhanced by using the high-luminance blue LED as the high-luminance visible light LED.

It is a figure which shows the embodiment of the ultraviolet sterilizing apparatus by this invention, and is the perspective view which shows the appearance structure of the ultraviolet sterilizing apparatus with the door closed. It is a perspective view which shows the appearance structure of the ultraviolet sterilization apparatus of FIG. 1A in a state where a door is opened. It is a top view which shows the appearance structure of the light source module in FIG. 1 (A-B). It is a front view which shows the appearance structure of the light source module in FIG. 1 (A-B). It is a side view which shows the appearance structure of the light source module in FIG. 1 (A-B). FIG. 2 (A to C) is a diagram illustrating a heat dissipation route of heat generated by a deep ultraviolet LED and a high-intensity visible light LED in the state of FIG. 1 in which the light source module is fixed to the box body. It is a circuit diagram of the circuit constructed on the printed circuit board of FIG. 2 (A to C). It is a schematic front view which shows the arrangement example 1 of the light source module in the box body of FIG. 1 (A-B). It is a schematic front view which shows the arrangement example 2 of the light source module in the box body of FIG. 1 (A-B). It is a schematic front view which shows the arrangement example 3 of the light source module in the box body of FIG. 1 (A-B). It is a schematic front view which shows the arrangement example 4 of the light source module in the box body of FIG. 1 (A-B). It is a block diagram which shows the control system configuration of the ultraviolet sterilization apparatus of FIG. 1 (A-B). It is a figure which shows the arrangement example of the operation elements and the display | display in the operation panel of the power supply / control device box of FIG. 1 (A-B). It is a flowchart which shows the control content by the control part of FIG.

An embodiment of this device will be described. First, the mechanical configuration of the ultraviolet sterilizer according to this device will be described. 1A and 1B show the appearance configuration of the ultraviolet sterilizer 10 according to the present invention. The ultraviolet sterilizer 10 is configured as a movable stationary type. It can also be configured as a fixed installation type that is fastened to a wall surface, ceiling, etc. with screws, magnets, double-sided tape, or the like. FIG. 1A shows a state in which the door 16 is closed, and FIG. 1B shows a state in which the door 16 is opened. The ultraviolet sterilizer 10 is configured to be suitable for sterilizing clothing and the like. The ultraviolet sterilizer 10 has a metal box body 12 and a power supply and control device box 14. The box body 12 is configured in a locker shape for accommodating clothes so that they can be taken in and out. That is, the box body 12 has a vertically long rectangular parallelepiped shape as a whole, and the opening 18 on the front surface can be opened and closed by the door 16 attached to the front surface. In this example, the dimensions of the box body 12 are such that the depth dimension is larger than the width dimension and the height dimension is larger than the depth dimension. Specifically, the outer dimensions of the box body 12 can be set to a height of 120 cm, a depth of 46 cm, a width of 30 cm, and the like, and the volume of the internal space 24 thereof can be set to about 150 to 160 liters. The size of the box body 12 can be appropriately set according to the size of the sterilization target object and the number of sterilization target objects to be sterilized at the same time.

Here, the box body 12 is made of a stainless steel plate having a mirror gloss on the six surfaces constituting the rectangular parallelepiped. That is, the outer peripheral edges of the six stainless steel plates are bent to form each surface, and the five surfaces excluding the door 16 are connected to each other by using rivets or screws to assemble into a rectangular parallelepiped shape. .. Since the bent portion of each surface functions as a frame (framework), the rectangular parallelepiped shape is firmly maintained. The door 16 is attached to the front opening 18 on the five assembled surfaces so as to be openable and closable with two upper and lower hinges 20. The box body 12 is made with such a structure. If a stainless steel plate with a thickness of about 0.5 mm is used as the material for the six surfaces of the box body 12, the overall weight of the box body 12 can be reduced, and the box body 12 can be easily moved by human power. it can. Since the stainless steel plate has a shielding property against deep ultraviolet rays in the thickness direction thereof, the box body 12 has a shielding property against deep ultraviolet rays between the internal space 24 and the external space 19. A handle 22 for opening the door 16 is attached to the front surface of the door 16. At the opening 18, abutting plates 21 (FIG. 1B) made of an iron flat plate rod-shaped member, which abuts the back surface of the door 16 when the door 16 is closed and stops the door 16 at a position where the door 16 is just closed, are up and down. It is installed extending in the direction. A magnet 23 (FIG. 1B) is attached to the back surface of the door 16. The state of FIG. 1A with the door 16 closed is held by the magnet 23 being attracted to the abutting plate 21. The door 16 can be easily opened to the state shown in FIG. 1B by pulling the handle 22 with a hand from this state.

A door open / close sensor 25 such as a micro switch for detecting the open state and the closed state of the door 16 is installed in the opening 18 of the box body 12. The signal line 27 of the door open / close sensor 25 is drawn out from the grommet with a film (not shown) on the back surface of the box body 12 into the external space 19 of the box body 12 and connected to the power supply and control device box 14. Legs 26 are attached to the four corners of the lower surface of the box body 12. The box body 12 can be used by landing on the floor with the legs 26 and being placed on the floor in an independent state. The power supply and control device box 14 is placed on the top plate of the box body 12, and is fixed on the top plate with screws, double-sided tape, or the like. The power supply cable 28 pulled out from the power supply and control device box 14 is inserted into the internal space 24 of the box body 12 from the grommet with a film on the back surface of the box body 12, and is a light source installed in the internal space 24 of the box body 12. It is connected to the module 30.

At the upper part of the internal space 24 of the box body 12, hanger hooks 34 made of metal pipes are installed in a horizontal posture with both ends fixedly supported on two surfaces facing each other in the width direction of the box body 12. .. A hanger on which clothing or the like, which is a sterilization target, is hung is hung on the hanger hook 34. In the internal space 24, a metal drainboard 36 is detachably installed at an appropriate height position in a horizontal posture. The drainboard 36 is used to place small items such as gloves when sterilizing the small items. A plurality of light source modules 30 are housed in the internal space 24 of the box body 12. In the example of FIGS. 1 (A, B), two light source modules 30 are housed in the internal space 24, and one of the light source modules 30 is fixedly installed on the bottom surface 38 of the internal space 24 with screws or the like, and the remaining one. The light source module 30 of the stand is fixedly installed on the ceiling surface 40 of the internal space 24 with screws or the like. The number of light source modules 30 accommodated in one ultraviolet sterilizer 10 can be appropriately set according to the size of the box body 12 (volume of the internal space 24), the shape of the internal space 24, and the like.

The configuration of the light source module 30 will be described. 2A, 2B, and 2C show the external configuration of the light source module 30. 2A is a plan view, FIG. 2B is a front view, and FIG. 2C is a side view. The light source module 30 has a configuration in which a printed circuit board 44 is mounted on a metal substrate 42 (base). Here, the metal substrate 42 is formed by bending a rectangular stainless steel plate having a mirror gloss. That is, the metal substrate 42 is formed in a shape that is bent at about 45 degrees (see FIG. 2C) by two bending lines extending in parallel in the longitudinal direction at the central portion of the surface in the lateral direction. As a result, the metal substrate 42 stands up at the same angle (that is, about 45 degrees in this case) diagonally upward from both ends in the width direction of the elongated rectangular base portion 42a in the central portion in the lateral direction (that is, inclined to each other). Two blade portions 42b and 42b (the angle formed by each other is about 90 degrees) are configured. The base portion 42a and the two blade portions 42b, 42b are formed in an inverted Fuji shape (inverted trapezoidal shape) as a whole in a side view (FIG. 2C).

The base portion 42a has an elongated rectangular printed circuit board 44 mounted on the upper surface thereof by screwing along the longitudinal direction of the base portion 42a, and is fixedly attached to the inner peripheral surface (stainless steel plate) of the box body 12 on the lower surface thereof by screwing. To. As shown in FIG. 2B, the base portion 42a is formed with four screw-through holes 46 along its longitudinal direction and two screw-through holes 48 near both ends in the longitudinal direction. .. The screw-through hole 46 is a hole into which a screw 66 for screwing the printed circuit board 44 to the base portion 42a is inserted. The screw-through hole 48 is a hole for inserting a screw (not shown) for directly screwing the base portion 42a to the stainless steel plate constituting the box body 12. In the example of FIGS. 2A to 2C, the screw-through holes 48 for attaching the base portion 42a to the box body 12 are arranged only in the vicinity of both ends in the longitudinal direction of the base portion 42a, but the base portion 42a and the box body are arranged. In order to improve the adhesion of the 12 and enhance the heat dissipation, a screw-through hole 48 is also formed in the central portion in the longitudinal direction as necessary (a total of 3 to 4 screw-through holes 48 are provided). The base portion 42a can also be screwed to the box body 12. The blades 42b and 42b form a reflector and a heat sink. Since the base portion 42a is fixed to the inner peripheral surface of the stainless steel plate constituting the box body 12 in a close contact state by screwing, a heat dissipation effect from the base portion 42a to the box body 12 can be obtained.

In FIG. 3, the heat dissipation route 57 generated by the deep ultraviolet LED 50 and the high-intensity visible light LED 52 in the state of FIG. 1 in which the light source module 30 is fixed to the box body 12 is indicated by a thick arrow. Both the deep ultraviolet LED 50 and the high-intensity visible light LED 52 are turned on (lit), deep ultraviolet light 54 is emitted from the deep ultraviolet LED 50, and the high-intensity visible light LED 52 emits high-intensity visible light 55 (here, high-intensity blue as described later). When light) is emitted, the deep ultraviolet LED 50 and the high-intensity visible light LED 52 generate heat. Since this heat generation shortens the life of the deep ultraviolet LED 50 and the high-brightness visible light LED, it is necessary to dissipate heat. The heat generated from the deep ultraviolet LED 50 and the high-intensity visible light LED 52 is transferred to the base 42a of the metal substrate 42 via the printed circuit board 44 and the high thermal conductive insulating sheet 62 as shown by the heat dissipation route 57 in FIG. Heat is conducted from the base 42a to the two blades 42b, 42b and the stainless steel wall surface 37 of the box 12 (corresponding to the bottom surface 38, ceiling surface 40, side surface 41, etc. in FIGS. 1A and 1B). Is dissipated. This prevents the deep ultraviolet LED 50 and the high-brightness visible light LED from becoming hot.

The printed circuit board 44 is composed of a well-known high thermal conductive printed circuit board having heat resistance and high thermal conductivity (high heat dissipation). As shown in FIG. 2A, on the upper surface of the printed circuit board 44, two high-power deep ultraviolet LEDs 50 and each of the two deep ultraviolet LEDs 50 arranged at equal intervals adjacent to both sides of the deep ultraviolet LEDs 50. Two (four in total) high-intensity visible light LEDs 52 are arranged in a row along the longitudinal direction of the base 42a. The deep ultraviolet LED 50 and the deep ultraviolet LED 50 are installed on the printed circuit board 44 with their optical axes all oriented in the same direction (direction orthogonal to the surface of the printed circuit board 44). The intervals between the four high-intensity visible light LEDs 52 are evenly spaced. At one end of the printed circuit board 44, a power receiving side connector 58 that detachably connects the power feeding side connector 56 at one end of the power feeding cable 28 that supplies power to the two deep ultraviolet LEDs 50 and the four high-intensity visible light LEDs 52 is installed. Has been done. The power receiving side connector 60 at the other end of the power feeding cable 28 is detachably connected to the power supply terminal (not shown) of the power supply and control device box 14 (FIGS. 1A and 1B).

The printed circuit board 44 is attached to the base 42a with a high thermal conductive insulating sheet 62 (for example, 3M's Hypersoft heat radiating sheet 6510H) having heat resistance, high thermal conductivity (high heat dissipation), and high adhesion. As can be understood from FIG. 2B, this mounting is printed at four screw-through holes 46 formed in the base portion 42a and positions on both sides of each deep ultraviolet LED 50 (positions communicating with the screw-through holes 46). The four screw-through holes 64 formed through the substrate 44 and the insulating sheet are communicated with each other, and the screws 66 are inserted into the four screw-through holes 46 and 64 through the communication from the lower surface side of the base 42a, respectively. , The nut 68 is attached to the screw 66 protruding toward the upper surface side of the printed circuit board 44 and tightened. As a result, the printed circuit board 44 is attached to the base 42a of the metal substrate 42, and the printed circuit board 44, the highly thermally conductive insulating sheet 62, and the base 42a of the metal substrate 42 adhere to each other well in the vicinity of the deep ultraviolet LED 50 that emits the most heat. Therefore, it is possible to improve the heat dissipation of the deep ultraviolet LED 50 that emits high heat. In the example of FIGS. 2 (A to C), the light source module 30 is equipped with two deep ultraviolet LEDs 50, but instead, only one deep ultraviolet LED 50 is mounted in the center of the light source module 30. It can also be configured as such. Alternatively, a total of three deep ultraviolet LEDs 50 are arranged one by one between each other (three places) where four high-intensity visible light LEDs 52 are arranged, and all seven LEDs 52 and 50 are arranged at equal intervals. You can also do it.

As the deep ultraviolet LED 50, for example, a high-power deep ultraviolet LED "ZEUBE265-1BB-TR" manufactured by Stanley Electric Co., Ltd. can be used. The deep ultraviolet rays emitted by the deep ultraviolet LED have a peak emission wavelength of 265 nm, a light output of 34 mW, and a directivity angle (half-value angle, half-angle) of 120 degrees. Since the light source module 30 of FIGS. 2 (A to C) is equipped with two deep ultraviolet LEDs 50, the total light output of the two deep ultraviolet LEDs 50 is 68 mW. The number of deep ultraviolet LEDs 50 mounted on one light source module 30 is not limited to two, and may be one or three or more.

As the high-intensity visible light LED 52, a high-intensity blue LED is used here. As the high-brightness blue LED, for example, a high-brightness 3 mm bullet-shaped blue LED "OSB56A3131A" manufactured by Optosupply can be used. This high-brightness blue LED has a main wavelength (dominant wavelength) of 470 nm, a luminous flux value (total luminous flux value) of 2.5 lumens, a luminous intensity of 8400 millicandelas, and a directional angle (half-value angle, half-angle) of 30 degrees. According to this high-intensity blue LED, a high-intensity blue light ray can be emitted to make the human eye feel dazzling. Since the light source module 30 of FIGS. 2 (A to C) is equipped with four high-intensity visible light LEDs 52, the total luminous flux value of all four high-intensity visible light LEDs 52 is 10 lumens. The number of high-intensity visible light LEDs 52 mounted on one light source module 30 is not limited to four, and may be one to three, or five or more.

The number of light source modules 30 installed in the box body 12 can be set in various ways, and the total value of the output of deep ultraviolet rays radiated in the box body 12 and high-intensity visible light are determined by the number of light source modules 30 installed. The total value of the luminous flux value of the visible light emitted by the LED 52 can be adjusted. The total luminous flux value of visible light emitted by the total high-intensity visible light LED 52 in the box 12 is, for example, 5 lumens or more, 10 lumens or more, or 20 lumens or more, or 50 lumens or more, or 100 lumens or more, or It can be set to 200 lumens or more. The number of deep ultraviolet LEDs 50 and high-intensity visible light LEDs 52 that can be mounted on one ultraviolet sterilizer 10 varies depending on the power supply and the power capacity of the control device box 14, but in the prototype, the deep ultraviolet LEDs 50 (light output 35 mW /). Minimum 1 (total light output 35 mW) to maximum 9 (total light output 315 mW), minimum 2 high-intensity visible light LEDs 52 (luminous flux value 2.5 lumens / piece) (total luminous flux 5) Lumens) to a maximum of 84 (total luminous flux value 210 lumens).

FIG. 4 shows a circuit diagram of a circuit configured on the printed circuit board 44. On the printed circuit board 44, a series connection circuit 51 of two deep ultraviolet LEDs 50 and a series connection circuit 53 of four high-intensity visible light LEDs 52 are respectively configured. Both the positive and negative terminals of the series connection circuits 51 and 53 are guided to the power receiving side connector 58 mounted on the printed circuit board 44.

An example of arrangement of the light source module 30 in the box body 12 is shown in FIGS. 5 (A to D) as a schematic view of the box body 12 as viewed from the front side. The arrangement example 1 of FIG. 5A is the arrangement of the light source module 30 shown in FIGS. 1 (A to B). That is, here, the two light source modules 30 are fixedly installed on the bottom surface 38 and the ceiling surface 40 (both of which are the exposed surfaces of the stainless steel plates constituting the box body 12) of the internal space 24 of the box body 12 with screws. ing. Assuming that the light output of one deep ultraviolet LED 50 is 35 mW and the luminous flux value of one high-intensity visible light LED 52 is 2.5 lumens, the total of the two light source modules 30 has four deep ultraviolet LEDs 50. Since there are eight high-intensity visible light LEDs 52, the light output of deep ultraviolet light is 140 mW, and the luminous flux value of blue light is 20 lumens. When sterilizing, the front door 16 of the box body 12 is opened, the hanger 72 on which the clothes 70 of the sterilization target is hung is inserted into the internal space 24, and the hanger 72 is hung on the hanger hook 34 and hung. , Close the door 16. In this state, the deep ultraviolet LED 50 and the high-intensity visible light LED 52 of the two light source modules 30 are all turned on at the same time (continuously lit for a predetermined set time) (the operation in the arrangement of FIGS. 5B to 5D described later is also the same). The deep ultraviolet rays 54 emitted from the deep ultraviolet LED 50 and the high-intensity blue light 55 emitted from the high-intensity visible light LED 52 are mirror-reflected by the two inclined blades 42b and 42b of the light source module 30, and the box body 12 The entire wall surface of the internal space 24 (bottom surface 38, ceiling surface 40, side surface 41, and other six surfaces, all of which are exposed surfaces of the stainless steel plate constituting the box body 12) is mirror-reflected. As a result, the clothing 70 is directly irradiated with the deep ultraviolet rays 54 emitted from the deep ultraviolet LED 50, or the mirror-reflected deep ultraviolet rays 54 are irradiated from all directions. As a result, the clothing 70 is sterilized.

In the arrangement example 2 of FIG. 5B, two light source modules 30 are fixedly installed on the side surface 41 of the internal space 24 of the box body 12 with screws. Even in this arrangement, the deep ultraviolet rays 54 emitted from the deep ultraviolet LED 50 and the high-intensity blue light 55 emitted from the high-intensity visible light LED 52 are mirror-reflected by the two blades 42b and 42b of the light source module 30 and also. Mirror reflection is performed on all six wall surfaces of the internal space 24 of the box body 12. As a result, the clothing 70 is directly irradiated with the deep ultraviolet rays 54 emitted from the deep ultraviolet LED 50, or the mirror-reflected deep ultraviolet rays 54 are irradiated from all directions. As a result, the clothing 70 is sterilized.

In Arrangement Example 3 of FIG. 5C, four light source modules 30 are attached to the bottom surface 38 of the internal space 24 of the box body 12 and each corner of both side surfaces 41 and each corner of the ceiling surface 40 and both side surfaces 41 with screws. It is fixedly installed (for example, it is screwed with the blade portion 42b). Assuming that the light output of one deep ultraviolet LED 50 is 35 mW and the luminous flux value of one high-intensity visible light LED 52 is 2.5 lumens, the total of four light source modules 30 has eight deep ultraviolet LEDs 50. Since there are 16 high-intensity visible light LEDs 52, the light output of deep ultraviolet light is 280 mW, and the luminous flux value of blue light is 40 lumens. Even in this arrangement, the deep ultraviolet rays 54 emitted from the deep ultraviolet LED 50 and the high-intensity blue light 55 emitted from the high-intensity visible light LED 52 are mirror-reflected by the two blades 42b and 42b of the light source module 30 and also. Mirror reflection is performed on all six wall surfaces of the internal space 24 of the box body 12. As a result, the clothing 70 is directly irradiated with the deep ultraviolet rays 54 emitted from the deep ultraviolet LED 50, or the mirror-reflected deep ultraviolet rays 54 are irradiated from all directions. As a result, the clothing 70 is sterilized.

In the arrangement example 4 of FIG. 5D, four light source modules 30 are fixedly installed at two locations above and below the side surface 41 of the internal space 24 of the box body 12, respectively. Even in this arrangement, the deep ultraviolet rays 54 emitted from the deep ultraviolet LED 50 and the high-intensity blue light 55 emitted from the high-intensity visible light LED 52 are mirror-reflected by the two blades 42b and 42b of the light source module 30 and also. Mirror reflection is performed on all six wall surfaces of the internal space 24 of the box body 12. As a result, the clothing 70 is directly irradiated with the deep ultraviolet rays 54 emitted from the deep ultraviolet LED 50, or the mirror-reflected deep ultraviolet rays 54 are irradiated from all directions. As a result, the clothing 70 is sterilized.

FIG. 6 shows the control system configuration of the ultraviolet sterilizer 10. A power supply unit 74 and a control board 76 are housed in the power supply and control device box 14. The power supply unit 74 converts a 100V commercial AC voltage into a 24V DC voltage and supplies power to the control board 76. A control unit 78, an input circuit 80, and an output circuit 82 are mounted on the control board 76. The door open / close state detection signal of the door open / close sensor 25 and the operation signals of various controls 84 installed on the power supply and the operation panel of the control device box 14 are input to the input circuit 80. From the output circuit 82, the drive signal of various indicators (indicator lamp, alarm buzzer, etc.) 86 installed on the operation panel of the power supply and control device box 14 and the drive signal of the light source module 30 are output. The drive signal of the light source module 30 (the drive signal of the deep ultraviolet LED 50 and the high-intensity visible light LED 52) is output to all the light source modules 30 at the same time and in parallel. Further, as the drive signal of each light source module 30, the drive signal of the deep ultraviolet LED 50 and the drive signal of the high-intensity visible light LED 52 are output simultaneously and in parallel. Therefore, in one ultraviolet sterilizer 10, all the deep ultraviolet LEDs 50 and all the high-intensity visible light LEDs 52 of all the light source modules 30 are always turned on (on) and off (off) at the same time. The control unit 78 outputs a drive signal of the light source module 30 output from the output circuit 82 by a logic circuit based on the door open / close state detection signal of the door open / close sensor 25, the operation signal of various controls 84, and the time measurement signal of the internal timer. The output control of the drive signal of the indicators 86 is performed.

FIG. 7 shows an arrangement example of the controls and indicators (corresponding to the controls 84 and the indicators 86 in FIG. 6) on the operation panel of the power supply and control device box 14. The operation panel 88 on the front surface of the power supply and control device box 14 has a power supply switch 90 (rocker switch), a start switch 92 (automatic return pushbutton switch or membrane switch), and a stop switch 94 (automatic return pushbutton) as controls. Button switch or membrane switch) is installed. Above the power switch 90, a power-on lamp 91 that displays the power-on state in a small size with green light or the like is arranged adjacently. The operation surfaces of the start switch 92 and the stop switch 94 are color-coded to avoid confusion. Further, on the operation panel 88, an operating lamp 96 and a completion lamp 98 are installed as indicators. In order to avoid confusion between the operating lamp 96 and the completion lamp 98, for example, the operating lamp 96 is color-coded into a red lamp and the completion lamp 98 is color-coded into a green lamp. In addition, a buzzer 99 is installed in the power supply and control device box 14. The time (sterilization time) for continuously driving the deep ultraviolet LED 50 and the high-intensity visible light LED 52 is set to an arbitrary time of 1 minute to 10 minutes, for example, in 1-minute units with the power supply and the DIP switch in the control device box 14. be able to. However, it can also be configured so that the sterilization time can be set by operating a switch on the operation panel 88.

FIG. 8 shows a control flow by the control unit 78 of FIG. The operation of the ultraviolet sterilizer 10 will be described based on this flow. This control is designed so that the deep ultraviolet LED 50 and the high-intensity visible light LED 52 cannot be turned on unless the door 16 is closed (the on operation of the start switch 92 is not effective), and the safety against ultraviolet rays is basically safe. It is secured. In FIG. 8, the operating lamp 96 is displayed as a “red lamp” and the completion lamp 98 is displayed as a “green lamp”. When the power switch 90 is turned on (S1), the timer is reset to maintain the state in which the measurement of the sterilization time is stopped, and the drive of the deep ultraviolet LED 50 and the high-intensity visible light LED 52 is maintained in the stopped state. The operating lamp 96 and the completion lamp 98 are initially turned off (S2). The power-on lamp 91 lights up.

In this state, the open / closed state of the door 16 is detected (S3). Then, when the door is in the open state, the operating lamp 96 is continuously lit (S4), and the user can know that the door 16 is in the open state. When the door 16 is in the open state, even if the start switch 92 is turned on, the driving of the deep ultraviolet LED 50 and the high-intensity visible light LED 52 remains stopped, and the sterilization work is not started. When the door 16 is in the closed state, the operating lamp 96 remains off (S5), and the operation of the start switch 92 becomes effective. When the start switch 92 is pressed in this state (S6), the timer starts measuring the sterilization time, and the set sterilization time starts. With the start of the sterilization time, the deep ultraviolet LED 50 and the high-intensity visible light LED 52 are simultaneously turned on (continuously lit), and the operating lamp 96 blinks (S7). By blinking the operating lamp 96, the user can know that the sterilization work by deep ultraviolet rays is being performed. Even if the start switch 92 is pressed again during the sterilization work, it is ignored.

When the stop switch 94 is pressed during the sterilization work (S8), the measurement of the sterilization time by the timer is stopped, the deep ultraviolet LED 50 and the high-intensity visible light LED 52 are simultaneously turned off (turned off), and the sterilization work is stopped. At the same time, both the operating lamp 96 and the completion lamp 98 blink, and the buzzer 99 is continuously sounded (S9). By blinking both the operating lamp 96 and the completion lamp 98, the user can know that the sterilization work has been stopped. Further, when the buzzer 99 is continuously sounded, the user can also know by sound that the sterilization work has been stopped. After the stop switch 94 is pressed, the deep ultraviolet LED 50 and the high-intensity visible light LED 52 cannot be restarted by pressing the start switch 92 until the control is completed. The operating lamp 96 and the completion lamp 98 blink 5 times at 1-second intervals and then turn off. In addition, the buzzer 99 sounds continuously for 5 seconds and then stops sounding. The control ends after the operating lamp 96 and the completion lamp 98 go out and the buzzer 99 stops sounding (S10). When the start switch 92 is pressed after the control is completed, the control can be restarted from the beginning.

On the other hand, when the door 16 is opened during the sterilization work (S11), the measurement of the sterilization time by the timer is temporarily stopped, the deep ultraviolet LED 50 and the high-intensity visible light LED 52 are simultaneously turned off, and the sterilization work is temporarily stopped. At the same time, the operating lamp 96 is continuously lit, and the buzzer 99 is sounded intermittently at 0.5 second intervals (S12). The operating lamp 96 is continuously lit (the completion lamp 98 remains off), and the buzzer 99 is sounded intermittently at 0.5 second intervals, so that the user can use the door 16 by himself or someone during the sterilization work. You can know that you have opened. The sound of the buzzer 99 stops in about 10 seconds (or when the door 16 is closed before that, when the door 16 is closed). The operating lamp 96 remains lit continuously until the door 16 is closed. After that, when the door 16 is closed (S13), the measurement of the sterilization time by the timer is restarted from the paused count value, the deep ultraviolet LED 50 and the high-intensity visible light LED 52 are turned on at the same time, and the sterilization work is restarted. , The blinking of the operating lamp 96 is restarted (S14).

After that, when the sterilization work proceeds and the set sterilization time ends (S15), the measurement of the sterilization time by the timer is stopped, the deep ultraviolet LED 50 and the high-intensity visible light LED 52 are turned off, and the sterilization work is performed. finish. At the same time, the operating lamp 96 is turned off, the completion lamp 98 starts blinking, and the buzzer 99 is sounded intermittently in synchronization with the blinking of the completion lamp 98. The completion lamp 98 repeats blinking five times at 1-second intervals, and then is continuously lit. The buzzer 99 sounds intermittently five times and then stops sounding (S16). After that, when the door 16 is opened (S17), the completion lamp 98 ends continuous lighting and turns off (S18), and the control ends (S10). When the start switch 92 is pressed after the control is completed, the control can be started from the beginning.

As described above, according to the ultraviolet sterilizer 10, in normal operation, deep ultraviolet rays are radiated only when the door 16 is closed, and deep ultraviolet rays are not radiated when the door 16 is open. Safety is ensured. However, when the door open / close sensor 25 breaks down, or the user forcibly cancels the function of the door open / close sensor 25 (a state in which the closed state is detected even though the door 16 is in the open state). ) When the start switch 92 is pressed, or during the disinfection work, the door 16 is opened and the deep ultraviolet LED 50 and the high-intensity visible light LED 52 are turned off at the same time, and the user forcibly opens and closes the door while the disinfection work is temporarily stopped. When the function of the sensor 25 is canceled, a state in which the emission of deep ultraviolet rays is not stopped may occur even though the door 16 is in the open state. Further, in order to confirm the operation of the deep ultraviolet LED 50, a function that can forcibly turn on the deep ultraviolet LED 50 even when the door 16 is open may be installed. When the deep ultraviolet LED 50 is turned on (the high brightness visible light LED 52 is also turned on) with the door 16 open, the light sources of the deep ultraviolet LED 50 and the high brightness visible light LED 52 are directly or the inner wall surface of the box 12 or the blades of the light source module 30. It can be visually recognized through the opening 18 of the door 16 as an image reflected on the surface (both mirror surfaces) of the portion 42b. Even in such a case, the high-intensity visible light emitted from the high-intensity visible light LED 52 makes the user feel dazzling. Therefore, the user is unconsciously kept away from the visible light, resulting in a deep depth. It is possible to keep the eyes away from ultraviolet rays, and it is possible to avoid danger to the human body such as the eyes.

<< Modification example >>
The deep ultraviolet light source used in the ultraviolet sterilizer of the present invention is not limited to the deep ultraviolet LED. That is, a deep ultraviolet light source such as a fluorescent lamp type germicidal lamp, a mercury lamp, or an excimer lamp can also be used. Further, the ultraviolet sterilizer of the present invention is not limited to a device in which a deep ultraviolet light source and a high-intensity visible light LED are assembled as a light source module. Further, in the ultraviolet sterilizing device of the present invention, the high-intensity visible light LED is not limited to the high-intensity blue LED. Other colored visible light (visible light other than white such as red and purple) that makes the user feel dazzling or a high-intensity visible light LED that emits white light can also be used. Moreover, it is possible to mix a plurality of colors instead of a single color. Further, the ultraviolet sterilization device of the present invention can be configured to be used for sterilization of foods, medical supplies such as masks, medical instruments, metal products, plastic products and the like, in addition to clothing. Further, the light source module of the present invention can also be configured to be used for deep ultraviolet light applications (industrial applications, etc.) other than sterilization.

10 ... LED sterilizer, 12 ... box body, 14 ... power supply and control device box (control device), 16 ... door, 18 ... opening, 19 ... external space, 20 ... hinge, 21 ... abutt plate, 22 ... Handle, 23 ... magnet, 24 ... internal space, 25 ... door open / close sensor, 26 ... leg, 27 ... signal line, 28 ... power supply cable, 30 ... light source module, 34 ... hanger hanging, 36 ... 簀 子, 37 ... box Wall surface (bottom surface, ceiling surface, side surface, etc.), 38 ... bottom surface (wall surface) of internal space, 40 ... ceiling surface (wall surface) of internal space, 41 ... side surface (wall surface) of internal space, 42 ... metal substrate (base, base, Mirror reflector and heat dissipation plate), 42a ... base, 42b ... blades, 44 ... printed circuit board, 46 ... screw holes, 48 ... screw holes, 50 ... deep ultraviolet LEDs (deep ultraviolet light source), 51 ... deep ultraviolet LEDs Series connection circuit, 52 ... High brightness blue LED (high brightness visible light LED), 53 ... High brightness visible light LED series connection circuit, 54 ... Deep ultraviolet light, 55 ... High brightness blue light (high brightness visible light), 56 ... Power supply side connector, 57 ... Heat dissipation route, 58 ... Power receiving side connector, 60 ... Power receiving side connector, 62 ... High thermal conductivity insulating sheet, 64 ... Screw through hole, 66 ... Screw, 68 ... Nut, 70 ... Bactericidal object Clothing, 72 ... Hanger, 74 ... Power supply unit, 76 ... Control board, 78 ... Control unit, 80 ... Input circuit, 82 ... Output circuit, 84 ... Operators, 86 ... Indicators, 88 ... Operation panel, 90 ... power switch, 91 ... power on lamp, 92 ... start switch, 94 ... stop switch, 96 ... operating lamp, 98 ... completion lamp, 99 ... buzzer

Claims (11)

A box that has a shielding property against deep ultraviolet rays between the internal space and the external space and can accommodate the sterilized object in and out.
A deep ultraviolet light source that radiates deep ultraviolet rays into the internal space of the box body,
A high-intensity visible light LED that radiates visible light into the internal space of the box body,
An ultraviolet sterilizing device having a control device that radiates the visible light from the high-intensity visible light LED when the deep ultraviolet light is radiated from the deep ultraviolet light source. The ultraviolet sterilizer according to claim 1, wherein the deep ultraviolet light source is a deep ultraviolet LED. The ultraviolet sterilization apparatus according to claim 2, wherein a light source module in which the deep ultraviolet LED and the high-intensity visible light LED are mounted side by side on a common base is arranged in the internal space of the box body. The box body has a metal plate on the wall surface, and the light source module has a metal plate on the base, and the metal plate on the base is fixed to the metal plate on the wall surface of the box body to fix the light source. The ultraviolet sterilization apparatus according to claim 3, which has a configuration in which a module is attached to the box body. A light source module having a configuration in which a deep ultraviolet LED and a high-brightness visible light LED are mounted side by side on a common base. The light source module according to claim 5, wherein the base has a metal substrate having a function as a mirror surface reflector and a heat radiating plate, and the deep ultraviolet LED and the high-intensity visible light LED are mounted on the metal substrate. The light source module according to claim 6, wherein the deep ultraviolet LED and the high-intensity visible light LED are mounted on a common printed circuit board, and the printed circuit board is mounted on the metal substrate. The light source module according to claim 7, wherein the metal substrate has a base portion and blade portions that rise obliquely on both sides of the base portion, and the printed circuit board is mounted on the base portion. The light source according to claim 7 or 8, wherein the printed circuit board comprises a series connection circuit in which a plurality of deep ultraviolet LEDs are connected in series and a series connection circuit in which a plurality of high-intensity visible light LEDs are connected in series. module. The light source module according to any one of claims 5 to 9, wherein the high-intensity visible light LED is arranged adjacent to each other on both sides of the deep ultraviolet LED. The light source module according to any one of claims 4 to 10, wherein the high-intensity visible light LED is a high-intensity blue LED.

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