TWM633992U - Antimicrobial button - Google Patents

Abstract

An Antimicrobial button comprising a light guide plate, an ultraviolet light-emitting element, an ultraviolet reflecting plate and a spacing element is provided. The light guide plate includes an outer surface, an inner surface and a lateral surface. The outer surface and the inner surface are disposed in opposite. The lateral surface is located between and connected the outer surface and the inner surface. The ultraviolet light-emitting element is disposed adjacent to the lateral surface of the light guide plate. The ultraviolet reflecting plate is disposed adjacent to the inner surface of the light guide plate. The spacing element is disposed between the light guide plate and the ultraviolet reflecting plate to form a spacing between the light guide plate and the ultraviolet reflecting plate.

Description

Antimicrobial Buttons

This creation is about an antimicrobial button, specifically, this creation is about an antimicrobial button with a gap.

In recent years, with the development of the epidemic, more and more attention has been paid to the hygiene and safety of items in contact with public spaces. Among them, various buttons are items that people often come into contact with, especially elevator buttons are items with high contact frequency. People often touch the elevator buttons because they take the elevator. Therefore, the elevator buttons are often attached to the elevator buttons by microorganisms such as viruses and germs due to manual contact. When the next person touches the elevator button, it is easy to cause contact transmission, making the microorganisms attach to the hands of the next person. This allows microorganisms to spread between human hands and elevator buttons. Therefore, how to improve the design of the elevator keys, so that the elevator keys can achieve the antimicrobial function, and avoid the spread of microorganisms such as viruses and germs on the elevator keys, is a problem that those skilled in the art are eager to solve.

One purpose of the invention is to provide an antimicrobial button. An ultraviolet light-emitting element is arranged on the side of the light guide plate, and an ultraviolet light reflecting plate is arranged on the inner surface of the adjacent light guide plate, and the ultraviolet light is reflected back and forth in the light guide plate by using total reflection, thereby forming a light film on the outer surface of the light guide plate, kill all Microorganisms that come into contact with the outer surface of the light guide. The anti-microbial button uses the outer surface of the light guide plate as the position where human hands touch, so microorganisms such as viruses and germs cannot survive when they touch the outer surface of the light guide plate, achieving the anti-microbial effect.

An embodiment of the present invention provides an anti-microbial button, which includes a light guide plate, an ultraviolet light emitting element, an ultraviolet light reflecting plate, and a spacer. The light guide plate has an outer surface, an inner surface and a side surface, the outer surface and the inner surface are arranged opposite to each other, the side surface is located between the outer surface and the inner surface, and the side surface is connected to the outer surface and the inner surface. The ultraviolet luminous element is arranged adjacent to the side of the light guide plate. The ultraviolet light reflecting plate is arranged adjacent to the inner surface of the light guide plate. The spacer is arranged between the light guide plate and the ultraviolet light reflection plate, forming a gap between the light guide plate and the ultraviolet light reflection plate.

Compared with the conventional technology, the anti-microbial button of this creation utilizes the ultraviolet light-emitting parts, the ultraviolet light reflector and the total reflection effect, so that the ultraviolet light is reflected back and forth in the light guide plate, and a light film is formed on the outer surface of the light guide plate, which can kill bacteria. Microorganisms attached to the outer surface of the dead light guide surface. Moreover, most of the ultraviolet light is gathered on the outer surface of the light guide plate, which can reduce the ultraviolet light from irradiating the human body and avoid the damage caused by ultraviolet light to the human body. Therefore, the anti-microbial button of this creation can not only kill microorganisms, but also meet safety regulations , can be used for a long time without causing harm to the human body. In addition, a spacer is provided between the inner surface of the light guide plate and the ultraviolet light reflection plate, so that a gap is formed between the light guide plate and the ultraviolet light reflection plate, and the total reflection effect at the inner surface of the light guide plate is increased, thereby increasing the overall reflectivity , to reduce the loss of ultraviolet light, so it can maintain a good antimicrobial effect.

10, 10a, 10b, 10c: Anti-microbial keys

20: Anti-microbial button

100: UV luminescent parts

110: Auxiliary UV luminescent parts

120: UV sensor

130: Visible light emitting parts

200: light guide plate

210: side

212: First side area

214:Second side area

220: inner surface

230: outer surface

300: UV reflector

400: spacer

410: Gap

500: elastic element

510: Press sensor

600: shell

610: The first accommodation space

620: Second storage space

700: UV reflective layer

D: Spacing

The illustrations attached to this creation are as follows:

Fig. 1 is a side view cross-sectional schematic diagram of an antimicrobial button according to an embodiment of the present invention.

FIG. 2 is a top cross-sectional schematic view of an antimicrobial button according to an embodiment of the present invention.

FIG. 3 is a three-dimensional schematic diagram of an antimicrobial button according to an embodiment of the present invention.

FIG. 4A is a schematic cross-sectional side view of an antimicrobial button according to another embodiment of the present invention.

FIG. 4B is a schematic cross-sectional side view of an antimicrobial button according to another embodiment of the present invention.

FIG. 4C is a schematic cross-sectional side view of an antimicrobial button according to another embodiment of the present invention.

FIG. 5 is a schematic cross-sectional side view of an antimicrobial button according to another embodiment of the present invention.

In the various embodiments of the present invention, the terminology used herein is for the purpose of describing particular embodiments only, and is not limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms including "at least one" unless the content clearly dictates otherwise. As used herein, the term "a" includes any and all combinations of one or more of the associated listed items.

In the various embodiments of the present invention, the terms "upper", "lower", "left", "right", "front" or "rear" are used herein to describe the relationship of one element to another element and are used for illustration only. The orientation presented in the diagram does not limit its actual location. The devices in the figures are not intended to limit the orientation or orientation of their elements due to inversion of the device.

Fig. 1 is a side view cross-sectional schematic view of an antimicrobial button according to an embodiment of the present invention. As shown in FIG. 1 , the antimicrobial button 10 at least includes an ultraviolet light emitting element 100 , a light guide plate 200 , an ultraviolet light reflecting plate 300 and a spacer 400 . The antimicrobial button 10 is suitable for resisting and killing microorganisms, so that the antimicrobial button 10 can achieve the effect of reducing viruses or bacteria, and even achieve the purpose of being virus-free or sterile. As is well known to those skilled in the art, the microorganisms referred to here refer to the complete and incomplete structures of various tiny organisms, such as various viruses (virus), mycoplasma (mycoplasma), chlamydia (Chlamydia), rickettsia (Rickettsia), bacteria, fungus, mold, phycomycete, Actinobacteria, protozoa, prokaryotes and eukaryotes, etc. , and its incomplete partial structures, such as deoxyribose nucleic acid (deoxyribonucleic acid; DNA), ribonucleic acid (ribonucleic acid; RNA), protein (protein), mitochondria (mitochondrion), cell membrane (cell membrane), etc., above For example only, but not limitation. The characteristics of ultraviolet light are used to destroy the complete and incomplete structure of microorganisms, so as to achieve the effect of killing, attenuating and disinfecting.

As well known to those skilled in the art, the ultraviolet light (Ultraviolet light; UV) referred to here refers to electromagnetic waves with a wavelength between 10 nanometers (nanometer; nm) and 400 nm, and an appropriate wavelength of ultraviolet light can be selected according to product requirements. For example, the wavelength of short-wave ultraviolet light (UVC) can be selected between 100nm and 280nm, which is suitable for killing microorganisms and has a good disinfection effect. If the product structure design allows, and the power of the ultraviolet light emitting element 100 is strong enough and has good reflection conditions, you can also choose medium-wave ultraviolet (UVB) with a wavelength of 280nm to 315nm, or even long-wave ultraviolet light with a wavelength of 315nm to 400nm. light (UVA). The above are examples only, and can be adjusted according to product requirements, but are not limited thereto.

FIG. 2 is a top cross-sectional schematic view of an antimicrobial button according to an embodiment of the present invention. FIG. 3 is a three-dimensional schematic diagram of an antimicrobial button according to an embodiment of the present invention. Please refer to FIG. 1 to FIG. 3 , the ultraviolet luminous element 100 is only shown as an example, and does not represent its shape or size. The ultraviolet light emitting element 100 is a light emitting element capable of emitting ultraviolet light in the aforementioned wavelength range. For example, ultraviolet light-emitting diodes (ultraviolet light-emitting diodes; UV-LEDs) may have a smaller volume and are suitable for products with a smaller accommodating space. The ultraviolet light emitting element 100 is not limited to one, and may also include at least one ultraviolet light emitting element, or include one or more arrangements of ultraviolet light emitting elements. For example, a plurality of ultraviolet light-emitting diodes arranged in a ring can provide sufficient power and a sufficient dose of ultraviolet light in a limited area to kill kill microorganisms and disinfect. If the accommodation space permits, an ultraviolet external electrode fluorescent lamp (External Electrode Fluorescent Lamp; EEFL) or an ultraviolet cold cathode tube (Cold Cathode Fluorescent Lamp; CCFL) can also be used instead. The above is only an example, and those skilled in the art can adjust the replacement according to product requirements, but is not limited thereto.

Please refer to FIG. 1 to FIG. 3 , the light guide plate 200 is used for guiding the ultraviolet light emitted by the ultraviolet light emitting element 100 . The light guide plate 200 has a side surface 210 , an inner surface 220 and an outer surface 230 . The outer surface 230 is opposite to the inner surface 220 and is located on the upper and lower surfaces of the light guide plate 200 . The side surface 210 is located between the outer surface 230 and the inner surface 220 , and the side surface 210 of the light guide plate 200 connects the outer surface 230 and the inner surface 220 . The light guide plate 200 in FIG. 2 and FIG. 3 is, for example, represented by a circular light guide plate. The light guide plate 200 can also be designed as a square, triangle, rectangle, rhombus, pentagon, hexagon, oval, etc. according to product requirements. The above is just an example, and those skilled in the art can make adjustments according to product requirements, but is not limited thereto. The light guide plate 200 is a component with a high refractive index relative to the surrounding air, so as to increase the effect of total reflection and reduce excessive scattering of ultraviolet light. The material of the light guide plate 200 includes transparent ceramic material, transparent glass material, transparent plastic material and combinations thereof. Transparent ceramic materials such as transparent silicon oxide (such as quartz), transparent silicon nitride, transparent aluminum oxide (such as corundum), transparent aluminum nitride, etc., or a combination of the above materials, but not limited thereto. Transparent glass materials are, for example, transparent quartz glass (Quartz glass), tempered glass (Tempered glass), borosilicate glass (Borosilicate Glass), soda lime glass (Soda Lime Glass), lead glass, etc., or a combination of the above materials, but not limited to this. Transparent plastic materials such as transparent silicone (Silicone), polydimethylsiloxane (polydimethylsiloxane; PDMS), polydiphenylsiloxane (polydiphenylsiloxane; PDPS), epoxy resin (Epoxy Resin), etc., or the above materials combination, but not limited to this. The above is only an example, and those skilled in the art can adjust the replacement according to product requirements, but is not limited thereto.

As shown in FIG. 1 and FIG. 2 , the ultraviolet luminous element 100 is disposed adjacent to the side surface 210 of the light guide plate 200 , and the side surface 210 is the light incident surface of the light guide plate 200 . into the light guide plate 200. The side surface 210 of the light guide plate 200 can be further divided into a first side area 212 and a second side area 214 . The first side area 212 can be used for light transmission of the light-emitting element or the sensing element, and the second side area 214 can be used for ultraviolet light reflection. If the ultraviolet light emitting element 100 is an ultraviolet light emitting diode, because the volume is quite small, it can be directly close to the first side area 212 of the side surface 210, and can even be directly packaged and fixed on the side surface 210, so that the ultraviolet light emitting element 100 emits Most of the ultraviolet light is injected into the light guide plate 200 to reduce light loss.

As shown in FIG. 1 to FIG. 3 , the ultraviolet reflector 300 is disposed adjacent to the inner surface 220 of the light guide plate 200 to reflect the ultraviolet light emitted from the inner surface 220 of the light guide plate 200 back into the light guide plate 200 . The ultraviolet light is reflected back and forth between the side surface 210 , the inner surface 220 and the outer surface 230 , which can increase the energy density of the ultraviolet light in the light guide plate 200 . The material of the ultraviolet light reflecting plate 300 includes metal materials, ceramic materials, plastic materials and combinations thereof. The metal material is, for example, stainless steel, brass, silver, chromium, aluminum, nickel, copper, tin, titanium, gold, platinum, etc., or a combination of the above materials, but is not limited thereto. Ceramic materials such as titanium oxide, aluminum oxide, aluminum nitride, etc., or a combination of the above materials, but not limited thereto. Plastic materials such as polytetrafluoroethylene (PTFE), inks, dyes, pigments, paints, etc., or a combination of the above materials, but not limited thereto. The ultraviolet reflector 300 can be a single layer or a multi-layer stack to increase the reflectivity, and also can be a high-low-high-low-high reflectivity stack to further increase the reflection effect. In addition, the surface of the ultraviolet light reflecting plate 300 facing the light guide plate 200 can form the pattern required by the button, as shown in Figure 2 and Figure 3, only the "door opening" pattern of the elevator button is used as an example, and the pattern can be adjusted according to the product use requirements . For example, numbers, close doors, extension keys, call keys, etc. can also be formed, but not limited thereto. In addition, if the antimicrobial button 10 is applied to other products, such as electronic products, home appliances or machine The buttons of the desk can also modify the pattern according to the product requirements. This is well known to those skilled in the art, so it will not be repeated here.

As shown in FIGS. 1 to 3 , the outer surface 230 of the light guide plate 200 is exposed to the air, and the side surface 210 is located between the outer surface 230 and the inner surface 220 . The light guide plate 200 is usually made of a material with a high ultraviolet refractive index (refractive index), for example, the ultraviolet light refractive index of the light guide plate 200 is between 1.2 and 3.5, but not limited thereto, so as to increase the critical angle of total reflection of ultraviolet light (Critical angle). For example, the refractive index n1 of ultraviolet light of the light guide plate 200 is 1.5, the refractive index n2 of air is 1.0, and the critical angle is about 41.5 degrees, which can achieve a considerable effect of total reflection and reduce the direct emission of ultraviolet light from the light guide plate 200 . Most of the ultraviolet light is reflected inside the light guide plate 200, and most of the ultraviolet light near the outer surface 230 is parallel to the outer surface 230, forming an extremely thin light film, or called an evanescent wave (Evanescent wave), which can kill Microorganisms attached to the outer surface 230 can achieve a disinfection effect without causing harm to human hands. The outer surface 230 of the light guide plate 200 is a position frequently touched by human hands, so the microorganisms attached to the outer surface 230 of the light guide plate 200 due to human hand contact can also be killed and disinfected in a short time, preventing the microorganisms from spreading to the next user . Since the ultraviolet light only forms a light film on the outer surface 230 of the light guide plate 200 and does not directly irradiate the user, the antimicrobial button 10 of the present invention can be used for a long time, and it does not need to be closed even when touched by human hands, so it can achieve comprehensive protection. Disinfection effect. In addition, the side surface 210 can also be designed as a curved surface (not shown), such as a convex curved surface or a concave curved surface, which can adjust the reflection of ultraviolet light into the light guide plate 200 or close to the outer surface 230 .

Please refer to FIG. 1 to FIG. 3 , a spacer 400 is provided between the light guide plate 200 and the ultraviolet light reflection plate 300, so that a gap 410 is formed between the light guide plate 200 and the ultraviolet light reflection plate 300, and the environment in the gap 410 is accommodated. Air, forming a layer of air. The gap 410 has a distance D, which is the distance between the light guide plate 200 and the ultraviolet light reflecting plate 300. The distance D can be adjusted according to the design requirements, for example, it is 0.001 millimeter (mm) to 5mm, but not limited thereto. For example, the distance D of the gap 410 is 0.5 mm to 5 mm, and the spacer 400 can use a washer, an annular spacer, etc., but not limited thereto. The material of the spacer 400 can be common materials such as plastic and rubber, for example. If the distance D of the gap 410 is 0.001 mm to 0.5 mm, then it may be considered to use a curable photoresist material to form the required curable photoresist pattern on the ultraviolet light reflecting plate 300 by inkjet, screen printing or exposure, and then The light guide plate 200 is contact-bonded on the curable photoresist pattern, and then the curable photoresist pattern is completely cured by photo-curing or thermal curing to form the required spacers 400 . The above are examples only, and those skilled in the art can perform equivalent substitutions according to requirements, so details are not repeated here.

Since the air layer gap 410 is added between the light guide plate 200 and the ultraviolet light reflection plate 300 , the critical angle of total reflection of the light guide plate 200 can be increased. For example, if the refractive index n1 of the ultraviolet light of the light guide plate 200 is 1.5, the refractive index n3 of the ultraviolet light reflecting plate 300 is 1.2, and the refractive index n2 of an air layer added between them is 1.0. The inner surface 220 of the light guide plate 200 is in contact with the air layer instead of the ultraviolet light reflector 300 , so the critical angle of total reflection of the light guide plate 200 increases, and the total reflected ultraviolet light in the light guide plate 200 increases relatively. In addition, the air layer in the gap 410 allows the ultraviolet light emitted from the inner surface 220 of the light guide plate 200 to be incident on the ultraviolet light reflection plate 300 at a relatively large incident angle, thereby increasing the reflection ratio of the ultraviolet light reflection plate 300 to ultraviolet light and reducing the The ultraviolet light is absorbed by the ultraviolet light reflecting plate 300 , or the proportion that passes through the ultraviolet light reflecting plate 300 . In this way, the proportion of the ultraviolet light reflected by the ultraviolet light reflecting plate 300 back to the inner surface 220 of the light guide plate 200 is relatively increased.

Please refer to FIG. 1 to FIG. 3 , the antimicrobial button 10 further includes a casing 600 for accommodating the aforementioned components. The light guide plate 200 , the ultraviolet light emitting element 100 , the ultraviolet light reflector 300 and the spacer 400 are all disposed in the housing 600 , and only the outer surface 230 of the light guide plate 200 is exposed. The shape of the housing 600 can be designed with reference to the shape of the light guide plate 200 , which is only circular for example, or can be designed as a square, etc., and will not be repeated here. The housing 600 can be made of materials with sufficient rigidity and reflectivity, such as stainless steel, brass, aluminum alloy, magnesium alloy, titanium Alloys, etc., if non-metallic materials are used, such as plastics, glass, ceramics, wood, etc., can also be coated on the surface of the accommodating space and the surface of the substrate, so as to increase the reflectivity near the side 210 of the light guide plate 200 and increase The ultraviolet light is reflected back into the light guide plate 200, which is an aesthetic choice for the user. The housing 600 has a first accommodating space 610 located on the side 210 of the light guide plate 200 for accommodating the ultraviolet light emitting element 100 . If the first accommodating space 610 of the housing 600 permits, a reflector (not shown) can also be provided in the first accommodating space 610, so that the ultraviolet light emitting element 100 is arranged between the reflector and the side 210 to increase the ultraviolet radiation. Into the effect of the side surface 210 of the light guide plate 200. In addition, the housing 600 is also designed with a second accommodating space 620 located under the ultraviolet light reflecting plate 300 . An elastic element 500 may be provided between the ultraviolet light reflecting plate 300 and the bottom of the housing 600 , such as a spring or the like, but not limited thereto. When the user presses the outer surface 230 of the light guide plate 200 of the anti-microbial button 10 , the elastic element 500 can provide feedback of the pressing, allowing the user to confirm that the pressing action has been completed.

FIG. 4A is a schematic cross-sectional side view of an antimicrobial button according to another embodiment of the present invention. In this embodiment, it is similar to the foregoing embodiments in FIGS. 1 to 3 , and the same reference numerals can be referred to, but not limited. The antimicrobial button 10 a of the present invention can additionally be provided with an auxiliary ultraviolet light emitting element 110 , which is also disposed adjacent to the side surface 210 of the light guide plate 200 like the ultraviolet light emitting element 100 . Please refer to FIG. 2 and FIG. 4A, the auxiliary ultraviolet light emitting element 110 can be arranged at the relative position of the ultraviolet light emitting element 100, but it is not limited, so that the dose of ultraviolet light (mJ/cm2) can be increased under the condition of limited area, and the enhanced Antimicrobial effect.

FIG. 4B is a schematic cross-sectional side view of an antimicrobial button according to another embodiment of the present invention. In this embodiment, it is similar to the foregoing embodiments in FIGS. 1 to 3 , and the same reference numerals can be referred to, but not limited. The antimicrobial button 10 b of the present invention can additionally be provided with an ultraviolet light sensing element 120 adjacent to the side surface 210 of the light guide plate 200 . Please refer to FIG. 2 and FIG. 4B , the auxiliary ultraviolet light sensing element 120 can be disposed at a position opposite to the ultraviolet light emitting element 100 , but not limited, so that the intensity of ultraviolet light can be monitored at any time. necessary When the circuit is properly designed, the intensity of the ultraviolet light emitting element 100 can be adjusted by using the sensing result of the ultraviolet light sensing element 120 .

FIG. 4C is a schematic cross-sectional side view of an antimicrobial button according to another embodiment of the present invention. In this embodiment, it is similar to the foregoing embodiments in FIGS. 1 to 3 , and the same reference numerals can be referred to, but not limited. The antimicrobial button 10c of the present invention can additionally be provided with a visible light emitting element 130 adjacent to the side surface 210 of the light guide plate 200 . Please refer to FIG. 2 and FIG. 4C , the visible light emitting element 130 may be disposed at a position opposite to the ultraviolet light emitting element 100 , but it is not limited thereto. The visible light emitting element 130 emits visible light of various colors in the wavelength range of 380nm to 830nm visible to human eyes, such as white light, blue light, green light or red light, etc., but not limited thereto. The anti-microbial button 10c may also be provided with a sensing element for a pressing action, for example, the pressing sensing element 510 disposed in the second accommodating space 620 for sensing the pressing action of the user. In addition, the circuit can be properly designed to electrically connect the pressing sensing element 510 and the visible light emitting element 130. When the user presses and touches the pressing sensing element 510, the visible light emitting element 130 is turned on to give feedback to the user's pressing action and increase the user's pressing force. The confirmation and feeling of the button.

Please refer to FIG. 4A to FIG. 4C. If necessary, the auxiliary ultraviolet light emitting element 110, ultraviolet light sensing element 120 and visible light emitting element 130 of this invention can be partially or completely arranged in the anti-microbial button 10, and appropriate selection The setting position increases the choice and flexibility of product design.

FIG. 5 is a schematic cross-sectional side view of an antimicrobial button according to another embodiment of the present invention. In this embodiment, it is similar to the foregoing embodiments in FIGS. 1 to 3 , and the same reference numerals can be referred to, but not limited. The antimicrobial button 20 of the present invention can additionally be provided with an ultraviolet light reflective layer 700 . Please refer to FIG. 2 and FIG. 5 , the ultraviolet reflective layer 700 can be disposed on the second side region 214 of the side surface 210 of the light guide plate 200 . The first side region 212 of the side surface 210 of the light guide plate 200 is a light incident region for incident ultraviolet light emitted by the adjacent ultraviolet light emitting element 100 . The second side area 214 of the side 210 of the light guide plate 200 can be provided with an ultraviolet light reflective layer 700, to further strengthen the reflection of ultraviolet light in the light guide plate 200, reduce the loss of ultraviolet light, and increase the antimicrobial effect. The material of the ultraviolet reflective layer 700 includes metal materials, ceramic materials, plastic materials and combinations thereof. The metal material is, for example, silver, chromium, aluminum, nickel, copper, tin, titanium, gold, platinum, stainless steel, etc., or a combination of the above materials, but is not limited thereto. Ceramic materials such as titanium oxide, aluminum oxide, aluminum nitride, etc., or a combination of the above materials, but not limited thereto. Plastic materials such as polytetrafluoroethylene (PTFE), inks, dyes, pigments, paints, etc., or a combination of the above materials, but not limited thereto. The ultraviolet reflective layer 700 can be a single layer or a multi-layer stack to increase the reflectivity, and also can be a high-low-high-low-high reflectivity stack to further increase the reflective effect. The above is only an example, and those skilled in the art can adjust the replacement according to product requirements, but is not limited thereto.

To sum up, the anti-microbial button design of this creation utilizes the ultraviolet light-emitting parts, the ultraviolet light reflecting plate, and the total reflection effect of the light guide plate to make the ultraviolet light reflect back and forth in the light guide plate and form a light film on the outer surface of the light guide plate , can kill the microorganisms attached to the surface outside the light guide plate. Most of the ultraviolet light is gathered on the outer surface of the light guide plate to form an anti-microbial light film, and at the same time, it can reduce the ultraviolet light from irradiating the human body and prevent the ultraviolet light from harming the human body. Therefore, the antimicrobial button of the invention can not only kill microorganisms, but also meet safety regulations, and can be used for a long time without causing harm to the human body. In addition, a spacer is provided between the inner surface of the light guide plate and the ultraviolet light reflection plate, and a gap with an air layer is formed between the light guide plate and the ultraviolet light reflection plate, thereby increasing the criticality of total reflection at the inner surface of the light guide plate. Angle, increase the effect of total reflection in the light guide plate, reduce the light loss of ultraviolet light, and maintain the anti-microbial effect.

This creation has been described by the above-mentioned relevant embodiments, but the above-mentioned embodiments are only examples for implementing the present creation. It must be pointed out that the disclosed embodiments do not limit the scope of the invention. on the contrary Accordingly, modifications and equivalent arrangements included in the spirit and scope of the scope of the patent application are included in the scope of this creation.

10: Anti-microbial button

100: UV luminescent parts

200: light guide plate

210: side

220: inner surface

230: outer surface

300: UV reflector

400: spacer

410: Gap

500: elastic element

600: shell

610: The first accommodation space

620: Second storage space

Claims (10)

An antimicrobial key comprising: A light guide plate has an outer surface, an inner surface and a side surface, the outer surface is opposite to the inner surface, the side surface is located between the outer surface and the inner surface, and the side surface connects the outer surface and the inner surface ; an ultraviolet luminous element disposed adjacent to the side surface of the light guide plate; an ultraviolet light reflector disposed adjacent to the inner surface of the light guide plate; and A spacer is arranged between the light guide plate and the ultraviolet light reflection plate to form a gap between the light guide plate and the ultraviolet light reflection plate. The antimicrobial button according to claim 1, wherein the light guide plate includes an ultraviolet light guide plate. The antimicrobial button according to claim 1, wherein the material of the light guide plate includes transparent ceramic material, transparent glass material, transparent plastic material and combinations thereof. The antimicrobial button according to claim 1, wherein the ultraviolet light emitting element comprises an ultraviolet light emitting diode. The antimicrobial button according to claim 1, wherein the material of the ultraviolet light reflecting plate includes metal materials, ceramic materials, plastic materials and combinations thereof. The antimicrobial button according to claim 1 further includes a casing, the light guide plate, the ultraviolet light emitting element, the ultraviolet light reflecting plate and the spacer are arranged in the casing, and the outer surface of the light guide plate is exposed . The antimicrobial button according to Claim 6 further includes an elastic element disposed between the ultraviolet light reflecting plate and the casing. The antimicrobial button according to claim 1 further includes an ultraviolet light sensing element disposed adjacent to the side of the light guide plate. The antimicrobial button according to claim 1 further includes a visible light emitting element disposed adjacent to the side of the light guide plate. The antimicrobial button according to claim 1 further includes an ultraviolet light reflective layer disposed on a second side area of the side surface of the light guide plate.

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