JP2006068420A - Ultraviolet sterilizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultraviolet sterilizer which can efficiently transmit a stable ultraviolet ray even to the skin surface at any section and irradiate the skin surface with the stable ultraviolet ray without waste even when the light source of an ultraviolet emitter and sun light are at any distant position and even to the skin surface at any section, and sterilizes and deodorizes utilizing a photocatalytic action of a titanium oxide at the section. <P>SOLUTION: A holding tool held between toes, an insole placed on the foot bottom and a footrest for putting the foot on are formed with a resin body having light guiding properties. The light emitted from the ultraviolet emitter or the light collected at a light receiving part is transmitted by a light guide cable. The light transmitted by the light guide cable is made incident to the resin body, reflected and diffused. The foot bottom or a part between toes is irradiated with a part or whole of the diffused light. A titanium oxide membrane is disposed at a section touching the foot bottom and between toes, and the photocatalytic reaction by the titanium oxide is made to occur by absorbing an ultraviolet component applied to the section, thereby the skin surface in contact is sterilized and deodorized by a strong oxidation and reduction reaction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultraviolet sterilizer that sterilizes and deodorizes between the soles of the feet and the toes using a photocatalytic reaction by ultraviolet rays.

  Conventionally, the area between the ankle and the sole of the foot and the toes is less likely to be exposed to sunlight, so it is usually easy to get steamed, and one in 10 people in Japan that causes ringworm bacteria to grow on the skin and become athlete's foot Yes. As a treatment, it is possible to sterilize with sunlight from the ankles under sunlight, but the direct sunlight does not hit directly between the soles or toes of the feet. The effect that appears is not obtained.

  In addition, devices for irradiating with ultraviolet lamps have been commercialized. However, in this configuration, since the entire sole of the foot is not exposed to light, the effect of treatment is uneven. Moreover, since the wavelength of the ultraviolet rays is harmful to the skin, it could not be irradiated for a long time.

  Japanese Laid-Open Patent Publication No. 2001-120591 has been proposed as a publicly known gazette, but even in this configuration, when the toes are forcibly spread, the angle of the gap between each finger is slightly shifted in a fan shape. Even if sunlight strikes between the toes, sunlight does not strike between the other toes, so treatment (treatment) between each finger cannot be performed at the same time. In addition, the sun is constantly moving, and in order to irradiate the affected area for a predetermined time, the fingertip must always be directed toward the sun.

JP 2001-120591 A

  The present invention has been made in view of the above-mentioned problems, and it is possible to efficiently provide stable ultraviolet light to the skin surface in any position where the light source of the ultraviolet light emitter and the light of the sun are separated from each other. It is to provide an ultraviolet sterilizer that can propagate and irradiate well without waste and is sterilized and deodorized by utilizing the photocatalytic action of titanium oxide at the site.

In order to solve the above-mentioned problems, the present invention utilizes the light-guiding property (propagation and reflection property) of the light-transmitting resin. Reflecting and diffusing repeatedly on the inner surface of the body, so that the light diffused and diffused reaches any shape of the resin body, so a light-guiding resin body sandwiched between the toes and the sole of the foot By forming the insole and the footrest on which the foot is placed, stable light can be irradiated to the skin surface that is in contact with the footrest.
In addition, the light emitted from the ultraviolet light emitter of the light emitting unit and the light collected by the light receiving unit are propagated through the light guide cable, so that the light guide cable can be bent freely and the light incident from one end is totally reflected in the light guide cable. Since the light is emitted from the other end while being repeated, the propagated light is incident on the inside of the resin to be reflected and diffused, and part or all of the diffused light is placed between the sole of the foot or the toes. It can be irradiated. In addition, a titanium oxide film is provided at the part of the resin body that is in contact with the sole of the foot and between the toes to absorb the ultraviolet rays irradiated at the part, causing a photocatalytic reaction with titanium oxide, and its strong redox By the reaction, the skin surface that touches the part is sterilized and deodorized.

  The ultraviolet sterilization apparatus of the present invention can efficiently propagate without waste with one or a plurality of light guide cables that bend stable light, regardless of the position where the light source and sunlight are separated from each other. By forming the holder, insole, and footrest, which are sandwiched between them, with a light-guiding resin body, the light incident on the resin body is reflected and diffused on the inner surface to reach the details inside the resin body The skin surface in any part and the skin surface in a plurality of parts can be propagated and irradiated with stable light without unevenness and waste. Therefore, sterilization and deodorization treatment using photocatalytic action can be performed at any site or a plurality of sites at the same time, and very efficient treatment can be performed.

Embodiments of the present invention will be described with reference to the drawings. Ultraviolet rays are classified into UV-A (320 to 400 nm), UV-B (280 to 320 nm), and UV-C (280 nm or less) depending on the wavelength. Here, UV-C is absorbed by the ozone layer and the atmosphere, and UV-B is absorbed when passing through the window glass and resin. UV-A, which is called near-ultraviolet rays, is completely harmless to human skin, but has the property of penetrating through window glass and resin to reach the deep part of the skin, and has a sterilizing and deodorizing effect on bacteria. When the titanium oxide (TiO ₂ ) film, which is a photocatalyst, is irradiated with this near-ultraviolet light having a wavelength of 300 to 380 nm, the ultraviolet light is absorbed and excited by the photoelectric effect to generate electrons and holes. These electrons and holes combine with oxygen and moisture in the air on the surface of the photocatalyst to cause an oxidation-reduction reaction, thereby generating active oxygen species O ₂ ⁻ , O ⁻ , and OH. The generated active oxygen has an extremely strong oxidizing power, sterilizes bacteria and viruses by oxidative decomposition, and has a deodorizing and deodorizing action.

  In the present invention, the affected part between the soles of the feet and the toes is sterilized and deodorized by utilizing the photocatalytic reaction of the titanium oxide by ultraviolet rays.

  FIG. 1 and FIG. 2 show an embodiment in which the present invention is applied to a holding tool that is held between toes. In FIG. 1 (a), each holder 1 is entirely formed of a transparent acrylic resin, and one side surface thereof is formed into a curved portion 1a in an arch shape, as shown in FIG. 4 (a). When held, the curved portion 1a is formed so that it fits exactly in the gap between the fingers. In the housing 3a of the light emitting unit 3, as shown in FIG. 1 (f), an ultraviolet LED 4A and a battery of a power source 11 for emitting light are provided. Then, by connecting the wiring 15 to the circuit shown in FIG. 7A, the ultraviolet LED 4A can be made to emit light by opening / closing the switch 10 (push button operation). Here, the ultraviolet LED 4A is provided with a light emitting region having a wavelength of 300 to 380 nm in which titanium oxide causes a photocatalytic reaction in the near ultraviolet region. As shown in FIG. 1 (g), the light emitted from the ultraviolet LED 4A is incident on the light receiving surfaces 2b, 2b of the respective light guide cables 2 facing each other, and the incident light is as shown in FIG. 1 (h). Further, the light propagates in one direction while repeating total reflection in the light guide cable 2.

  Examples of the light guide cable 2 can be an optical fiber, and examples of the optical fiber include a quartz fiber, a glass fiber, a plastic fiber, and the like, among which the plastic fiber is most easily implemented. In the structure, the core 2c is formed of an acrylic resin, and the periphery thereof is formed of a clad 2d with a fluorine-based resin. In a large-diameter fiber, the cross-sectional area of 96% is a core portion that propagates light. In the plastic fiber, light propagates while totally reflecting on two types of interfaces having different refractive indexes. Therefore, the light incident from one end can be propagated with almost no attenuation or loss. As another implementation structure of the light guide cable 2, for example, a tube having a mirror-finished inner surface can be used.

  The light emitted from the end face of the light guide cable 2 and entering the holder 1 is transmitted through the convex surface of the inner surface of the curved portion 1a formed in the holder 1 and reflected by the surface. As shown in FIG. 1 (b), the light divided into light and repeatedly reflected and diffused in the holder 1, and as a result, the light that has become uniform to some extent is transferred from the inside of the holder 1 to the outside. Irradiated. As shown in FIG. 1 (c), a titanium oxide film 5 is coated (coated) on the portion of the toe that contacts the skin surface and absorbs light (ultraviolet rays) irradiated at that portion. As a result, a photocatalytic reaction occurs. As a typical bacterium that propagates between the toes, there is a ringworm, called athlete's foot, which is most easily propagated at the base between the toes. Therefore, when the surface of the titanium oxide film 5 is brought into contact with the skin surface of the base and the portion is irradiated with near ultraviolet rays, a redox reaction of the photocatalyst takes place and propagates to the skin in contact with the irradiated portion. Sterilizes ringworm and treats (treats) athlete's foot. The photocatalytic reaction is sufficiently absorbed even in weak light and reacts to have a strong bactericidal power. Appropriate moisture is required for the photocatalytic reaction, but there is always appropriate moisture (such as sweat) on the skin surface, and sufficient photocatalytic reaction is performed. FIG. 1 (d) shows a case where the side surface or bottom surface of the holder 1 on which the titanium oxide film 5 is not coated is mirror-finished by aluminum vapor deposition or the like. Since the light is totally reflected on the surface, the light can be condensed and irradiated in the direction of the base of the toe with the structure.

  As shown in actual use in FIG. 4 (a), light is applied to the skin surface between each finger with each holder 1 of this embodiment being sandwiched between the toes of each foot. The above-mentioned photocatalytic action by near ultraviolet rays sterilizes by active oxygen generated by bacteria on the skin surface contacting each finger, and at the same time, deodorization and deodorization are performed. In addition, tubing is given by the tube 2e so that each light guide cable 2 may not vary. Here, since the light-transmitting acrylic resin body has a light transmittance of 90 to 92%, the light incident on the holder 1 can be efficiently irradiated onto the skin surface between the toes. The material for forming the holder 1 may be a light-transmitting translucent material, but is most preferably a transparent material. Besides acrylic resin, polystyrene, polycarbonate, poly-4-methyl-1-pentene, polyethersulfone. , Polyarylate, acrylonitrile styrene, polyetherimide, polyethylene and the like. Moreover, you may implement by transparent HIPS, transparent ABS, impact-resistant acrylic, etc. which mix | blended the rubber | gum which consists of rubber particles smaller than the wavelength of light, or a transparent resin and the same refractive index. The method of coating the titanium oxide film 5 also includes a high-temperature baking type in which the titanium oxide sol is sprayed and baked at a high temperature, or a coating agent that is applied at a drying temperature from room temperature to 120 ° C. Can be carried out by spray coating method, spin coating method, dip coating method, sol-gel method or the like. The titanium oxide film 5 can be made into a transparent film. Alternatively, the surface of the holder 1 may be coated with an inorganic primer, and the titanium oxide film 5 may be coated thereon. Further, the titanium oxide film 5 can be coated by sputtering or CVD.

  FIG. 1E shows a configuration of an embodiment in which the holder 1 and the light guide cable 2 can be inserted and removed, and the light guide cable 2 is inserted and connected to the insertion portion 1 b provided in the holder 1. A valve port 1c is screwed at the inlet of the insertion portion 1b, and a convex portion 2a formed on the surface of the light guide cable 2 is screwed into the valve port 1c while being pushed from the inside of the bulb 12. With this configuration, the holder 1 having an appropriate size can be inserted and removed or can be inserted and removed for cleaning. And in this structure, the holder 1 and the light guide cable 2 can be used in the state fixed firmly. As another implementation configuration, the holder 1 and the light guide cable 2 may be integrated. Alternatively, four light guide cables 2 for the left foot and four light guide cables 2 for the right foot may be provided in the same housing 3a to receive light. Alternatively, each of the light guide cables 2 may be configured to be provided with one ultraviolet LED 4A facing each other on the light receiving surface 2b.

  FIG. 4B shows a supporter 9 for fixing each holder 1. The supporter 9 can be attached to the tip of the foot by engaging the supporter 9 with a hook-and-loop fastener (registered trademark: Velcro). By providing this supporter 9, each holder 1 can be fixed in close contact with the base of the toe.

  FIG. 4C shows an embodiment in which walking can be performed while being held between the toes. The light emitting unit 3 or the light receiving unit 6 is attached to the ankle with a band, and the light propagated through each light guide cable 2 is incident from the upper surface of each holder 1 and can be implemented. The holder 1 is made of a soft vinyl chloride resin made of a soft material, so that a sense of discomfort between toes can be eased. With this configuration, it is possible to walk with the holder 1 held between the toes of each foot, which is very functional.

FIG. 2 shows another embodiment of the holder 1. The holder 1 as a whole is formed of a transparent ionomer resin having elasticity, sandwiching portions 1d and 1d sandwiched between adjacent fingers are formed on both sides, and a curved portion 1a coated with a titanium oxide film 5 is formed at the front center. . When the holder 1 is worn between the toes, the holder 1 can always be held and held by the holding portions 1d and 1d, and can be attached without feeling uncomfortable. The embodiment of FIG. 2A can be worn between the thumb and index finger, and FIG. 2B can be worn between the index finger, middle finger, ring finger, and little finger.
FIG. 2 (c) shows a configuration that can be worn at a time between five fingers, and the holder 1 is integrally formed by a connecting portion 1A. The photocatalytic reaction is not effective unless the titanium oxide film 5 is in contact with the skin surface. However, with the configuration of this embodiment, the titanium oxide film 5 can always be in contact with the skin surface, and the portion is sufficient. Sterilization and deodorizing effect can be obtained. 1 and 2 may be provided with a rubber string or a string, and one of the strings may be fixed and pulled around the ankle or the instep of the foot. Further, as another implementation configuration, the surface of the titanium oxide film 5 of the holder 1 can be expanded and the surface area can be increased.

  FIG. 3 shows a configuration in which sunlight or light from a fluorescent lamp is collected and the light is incident on each light guide cable 2 to propagate. At the center of the light receiving portion 6 formed in a hemispherical shape with acrylic resin or the like, the light receiving surfaces 2b, 2b of each light guide cable 2 are provided facing upward, and the external light condensed there is placed in each light guide cable 2. It can be made incident. The incident light can propagate while totally reflecting in the core 2c of each light guide cable 2, and can enter the holder 1 as in the previous embodiment. The photocatalytic reaction is caused by the ultraviolet component of the light. The irradiated site can be sterilized and deodorized as in the previous embodiment. In addition, as a structure which condenses light, for example, the light condensed with the convex lens may enter into each light-receiving surface 2b, and the light condensed with the concave mirror may enter into each light-receiving surface 2b. . In the configuration of this embodiment, the maintenance cost is zero and it can be used semipermanently.

  The configuration shown in FIGS. 1 to 4 can also be used for treatment of hallux valgus. With the configuration of the present invention, the three effects of treatment of hallux valgus, athlete's foot treatment, deodorization and deodorization of toes are provided. Obtainable.

  FIG. 5 shows a configuration of an embodiment in which the present invention is implemented on the insole 7. In FIG. 5 (a), the entire insole 7 is formed of a transparent ethylene vinyl acetate copolymer, and when the sole is placed on the upper surface of the insole 7, the foot is in contact with the skin surface of the sole. The recess 7a is formed in accordance with the shape of the back of the film, and the titanium oxide film 5 is coated (coated) on the portion, and the light guide cable 2 is inserted into the rear end of the insole 7. With this configuration, light enters the insole 7 from the light guide cable 2, and the incident light can be irradiated with near-ultraviolet light on the skin surface in the entire sole of the foot while repeating reflection and diffusion in the insole 7. . Here, the thickness of the insole 7 is desirably 3 mm or more in order to provide sufficient light guiding properties. Recently, a technology for irradiating the entire surface of the display with uniform light has been established due to the progress of the light guide technology of the display of the mobile phone. By forming fine reflection grooves, reflection dots, prisms, and the like, light incident on the resin can be appropriately diffused to irradiate the entire sole of the foot with uniform light. FIG. 5B shows another embodiment in which four light guide cables 2 are inserted into the insole 7 and provided. With this configuration, the entire sole can be irradiated with more uniform light. In the configuration of the insole 7 of the present invention, the entire bottom surface thereof may be mirror-finished by, for example, aluminum vapor deposition, or may be configured to have a high white reflectance.

  In FIG. 5C, protrusions 7b,... 7b sandwiched between the toes are integrally formed on the surface of the insole 7, and the titanium oxide film 5 is coated (coated) on the side surfaces of the protrusions 7b. It is provided. In this configuration, the projections 7b,... 7b are formed at positions that fit between the toes of each foot, so that light incident from the light guide cable 2 in the insole 7 is reflected and diffused to be in the projections 7b. And the light is irradiated from the side surface of each projection 7b to the outside. The light irradiates a portion of the toe that contacts the skin surface, and can also sterilize and deodorize by causing a photocatalytic reaction at that portion. Therefore, according to the configuration of the present embodiment, treatment can be performed by simultaneously irradiating between the sole of the foot and the toe with the same light source. The bottom surface of the protrusion 2 is preferably formed in a conical shape as shown in FIG. 5E so that a large amount of light can enter. FIG. 5 (d) shows a cross-sectional view of the configuration of this embodiment, and FIG. 5 (f) shows a state where the foot is actually placed on the insole 7. As in the present embodiment, the light emitting unit 3 or the light receiving unit 6 is attached to the ankle with a band and fixed, so that the insole 7 can be walked in a state where it is laid on the sole of the foot. Further, as shown in the figure, a supporter 9 may be provided so that it can be fitted to the sole of the foot so that it can be worn on the back side of the foot. In the structure of this example, a sufficient photocatalytic reaction occurs even in low light, so the strong oxidative power generated by the photocatalytic reaction disinfects bacteria that grow on the skin between the soles of the feet and the toes, and simultaneously eliminates them. Odor is also deodorized. The structure of the insole 7 of the present invention does not deteriorate the photocatalytic effect no matter how many times it is washed. In addition, you may comprise so that an adhesive sheet may be provided in the back surface of the insole 7 of a present Example, and it may affix on the upper surface of footwear, such as a sandal, with the adhesive sheet. Further, the exposed surface of the insole 7 can be configured by a half mirror, and the inner surface can be configured to totally reflect light. Further, the insole 7 and the light guide cable 2 may be configured as an integral structure.

FIG. 6 shows the present invention configured with a plate-like footrest 8 made of a light-guiding resin material. In FIG. 6 (a), the footrest 8 is made of acrylic resin, and a recess 8a is formed on the upper surface of the footrest 8 to be fitted to the sole of the foot, and a titanium oxide film 5 coating (coating) is provided on that portion. It is a configuration. The footrest 8 is fitted on the housing 3a of the light emitting unit 3 so that it can be inserted and removed. On the side of the footrest 8, an ultraviolet lamp 4B that is lit by the circuit shown in FIG. Provide. The ultraviolet lamp 4B is turned on after being converted into a high frequency voltage by the DC-AC inverter 14 from the DC power supply 11. It is desirable to turn on the ultraviolet lamp 4B at 365 nm at which the photocatalytic reaction becomes active. As shown in the figure, the light emitted from the ultraviolet lamp 4B enters the resin body from the side surface of the footrest 8 and can uniformly irradiate the entire sole of the foot while repeating reflection and diffusion in the resin body. . In the configuration of this embodiment, each light receiving surface 2b of the light guide cable 2 is provided above the ultraviolet lamp 4B so as to face the light source, and the light emitted from the ultraviolet lamp 4B is incident on each light receiving surface 2b. It is configured to propagate through the light guide cable 2 and enter each holder 1. As shown in FIG. 6 (c), in the configuration of the present embodiment, each holding tool 1 can be held between the toes with the foot placed on the surface of the footrest base 8, Simultaneously irradiate ultraviolet light between the back and toes to cause photocatalytic reaction by titanium oxide, and the skin surface of both parts can be sterilized and deodorized simultaneously. A reflecting mirror 13 is provided behind the ultraviolet lamp 4B so that light can be efficiently incident into the footrest 8, and the light emitted from the ultraviolet lamp 4B is collected by the reflecting mirror 13 and incident. It is configured to make it. FIG. 6D shows a configuration in which protrusions 8 b... 8 b that are sandwiched between the toes of each foot are provided integrally with the footrest 8 on the upper surface of the footrest 8. The side surface of each protrusion 8b is also coated with a titanium oxide film 5. In the configuration of this embodiment, the light incident from the side surface of the footrest 8 is also reflected and diffused in each protrusion 8b. Therefore, the photocatalytic reaction also occurs at the part contacting the toes between the toes, and the skin surface of both parts can be sterilized and deodorized at the same time. Note that the configuration of FIG. 6 may be provided with a timer, and the timer may be configured to automatically stop when a certain time has elapsed. Each protrusion 8b may be formed in a conical shape as shown in FIG. Further, the entire surface of the housing 3a on which the footrest 8 is placed may be mirror-finished. Further, the ultraviolet lamp 4B may be provided on the lower surface side of the footrest 8 and the light of the ultraviolet lamp 4B may be irradiated upward from the lower surface so that the light enters the footrest 8. Good. Also, as one treatment method for nail athlete's foot, it may be configured such that ultraviolet light emitted upward from the ultraviolet lamp 4B is collected and focused on the back side of the nail, and the focus is scanned in an appropriate region. You may comprise. In addition to the battery or the battery, the power source 11 can be implemented by using a commercial power source as an appropriate power source with an AC adapter.
Since the light from the fluorescent lamp also contains near-ultraviolet rays to some extent, the photocatalytic reaction occurs even under the fluorescent lamp, and the present invention can be carried out. Further, by attaching silver or copper metal to the surface of the titanium oxide film 5, a certain degree of bactericidal power can be obtained even in a dark place where light is weak.
As another embodiment of the ultraviolet sterilization apparatus of the present invention, a light-holding resin body that holds between the toes, an insole laid on the sole of the foot, and a footrest for placing the foot is formed in a hollow structure Then, the light guide cable 2 may be inserted into the space having the hollow structure to allow light to enter, and the light may be reflected and diffused by the hollow inner surface. Further, the present invention can be prepared for each size, for example, for adults and children, for men and for women, and the length of the light guide cable 2 can be prepared from several tens of centimeters to several meters. Further, since the glass material has light guiding properties, it can be implemented with the structure of the present invention.

(A) Perspective view of one embodiment of the present invention (b) Longitudinal sectional view of one embodiment of the present invention (c) (d) Side view of one embodiment of the present invention (e) (f) 1 of the present invention Longitudinal sectional view of the embodiment (g) Longitudinal sectional view of the embodiment of the present invention viewed from the XY direction (h) Longitudinal sectional view of the embodiment of the present invention (A) (b) (c) Perspective view of one embodiment of the present invention 1 is a perspective view of an embodiment of the present invention. (A) (b) Front view of partial cross section of one embodiment of the present invention (c) Side view of one embodiment of the present invention (A) (b) (c) Perspective view of one embodiment of the present invention (d) Longitudinal sectional view of one embodiment of the present invention (e) Perspective view of a portion of one embodiment of the present invention (f) The present invention Side view of a partial cross section of one embodiment of (A) Front view of one embodiment of the present invention (b) Longitudinal sectional view and partial side view of one embodiment of the present invention (c) Longitudinal sectional view of one embodiment of the present invention and side view with feet (D) Front view of one embodiment of the present invention (A) (b) Circuit diagram of one embodiment of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Holding tool 1A: Connection part 1a: Bending part 1b: Insertion part 1c: Valve port 1d: Holding part 2: Light guide cable 2a: Convex part 2b: Light-receiving surface 2c: Core 2d: Clad 2e: Tube 3: Light emitting part 3a : Case 4: Ultraviolet light emitter 4A: Ultraviolet LED
4B: UV lamp 5: Titanium oxide film 6: Light receiving portion 7: Insole 7a: Recess 7b: Protrusion 8: Footrest 8a: Recess 8b: Protrusion 9: Supporter 10: Switch 11: Power supply 12: Valve 13: Reflection Mirror 14: DC-AC inverter 15: Wiring

Claims (5)

The holder (1) sandwiched between the toes is formed of a light guide resin body, and a titanium oxide film (5) is provided on a portion of the holder (1) that contacts the skin surface of the foot, A light emitting section (3) having an ultraviolet light emitter (4) and a light guide cable (2) for propagating light emitted from the ultraviolet light emitter (4) are connected to or integrated with the holder (1); The propagating light is incident on the holder (1), and the incident light is reflected and diffused in the resin body to irradiate the skin surface between the toes. UV sterilizer that sterilizes and deodorizes the skin surface that comes into contact by photocatalytic reaction. The holder (1) sandwiched between the toes is formed of a light guide resin body, and a titanium oxide film (5) is provided on a portion of the holder (1) that contacts the skin surface of the foot, A light receiving part (6) for collecting light and a light guide cable (2) for propagating light received by the light receiving part (6) are connected to or integrated with the holder (1), and the propagating light is provided. The light is incident on the holder (1), and the incident light is reflected and diffused in the resin body to irradiate the skin surface between the toes. Ultraviolet sterilizer that sterilizes and deodorizes the facing skin. An insole (7) on which the sole of the foot is placed is formed of a light-guiding resin body, a titanium oxide film (5) is provided on a portion of the insole (7) that contacts the skin surface of the foot, and an ultraviolet light emitter (4 And a light guide cable (2) for propagating light emitted from the ultraviolet light emitter (4) is connected to or integrated with the insole (7), and the propagating light is insole (7) The surface of the skin that is incident on the skin, is reflected and diffused in the resin body, and is applied to the skin surface of the sole of the foot, and the skin surface that comes into contact with the photocatalytic reaction of ultraviolet rays and titanium oxide irradiated at the site UV sterilizer that sterilizes and removes odors. The insole (7) on which the sole of the foot is placed is formed of a light guide resin body, and a titanium oxide film (5) is provided on a part of the insole (7) that contacts the skin surface of the foot to collect light. A light receiving unit (6) and a light guide cable (2) for propagating light received by the light receiving unit (6) are connected to or integrated with the insole (7), and the propagating light is provided in the insole (7). The incident light is reflected and diffused in the resin body to irradiate the skin surface of the sole of the foot, and sterilization and deodorization of the skin surface that comes into contact with the photocatalytic reaction of ultraviolet rays and titanium oxide irradiated at the site. UV sterilizer that is designed to be used. A footrest (8) on which a foot is placed is formed of a light-guiding resin body, a titanium oxide film (5) is provided on a portion of the footrest (8) that contacts the skin surface of the foot, and an ultraviolet light emitter The footrest (8) is detachably provided on the light emitting section (3) having (4), and the light emitted from the ultraviolet light emitter (4) is incident from the side surface of the footrest (8), The incident light is reflected and diffused in the resin body to irradiate the skin surface of the sole of the foot, and the surface of the skin that comes into contact with the photocatalytic reaction of ultraviolet rays and titanium oxide irradiated at the site is sterilized and deodorized. UV sterilizer.

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