JP2021029582A - Ultraviolet irradiation device and method of using the same - Google Patents

Abstract

To achieve an ultraviolet irradiation device with a high bactericidal effect.SOLUTION: The ultraviolet irradiation device includes a light emitting element, at least one electronic component, a light guide plate, a base material, and wiring. The light emitting element has a light emitting surface that emits ultraviolet rays having a wavelength of 150 to 300 nm. The light guide plate has a light emitting surface that intersects an end surface in the thickness direction, and guides the ultraviolet rays emitted to the end surface to emit light from the light emitting surface. In the base material, the light emitting element is embedded so that an electrode and the light emitting surface are exposed, and at least one electronic component is embedded so that an electrode is exposed. The wiring is formed on the surface of the base material and connects the electrode of the light emitting element to the electrode of the at least one electronic component. The light guide plate is supported by the base material so that the end surface is in contact with the light emitting surface.SELECTED DRAWING: Figure 4

Description

The present technology relates to an ultraviolet irradiation device and a method of using the same.

Currently, there are about 150 million tons of plastic waste in the world's oceans, and it is estimated that at least 8 million tons of new plastic waste is flowing into it annually. Such plastic waste (for example, PET bottles, food containers, etc.) is difficult to decompose in the natural world and remains in the environment semi-permanently, which has a great impact on the marine environment, living things, and ecosystems. In recent years, the reduction has become an urgent issue worldwide.

PET bottles are one of the causes of plastic waste. The recycling rate and weight reduction rate of PET bottles are improving. However, the measures for reuse of PET bottles necessary for further reduction of waste are limited due to concerns about the outbreak of bacteria, microorganisms, molds, etc. in PET bottles and the hygienic safety due to reproduction. It is only progressing within a certain range.

On the other hand, ultraviolet rays having a wavelength range of 150 to 300 nm (hereinafter, also referred to as “deep ultraviolet rays”) have a high bactericidal ability of destroying bacterial DNA and inactivating the bacteria. Therefore, irradiation with deep ultraviolet rays is attracting attention as an alternative to conventional sterilization methods such as boiling and chlorine disinfection, which are costly, have an environmental burden, or are harmful to the human body.

Japanese Unexamined Patent Publication No. 2017-21256 (Patent Document 1) discloses a water server that sterilizes drinking water stored in a bottle using deep ultraviolet rays. The water server can efficiently irradiate the air containing the bacteria introduced into the bottle and the interface between the air and the drinking water existing in the bottle with ultraviolet rays to supply sterilized drinking water. However, there is a problem that the bactericidal effect is limited to the air and bacteria on the surface of the water and does not reach the inside of the water. In addition, water servers are large and inconvenient to carry.

As a countermeasure against such a problem that cannot be carried, Japanese Patent Application Laid-Open No. 2017-170342 (Patent Document 2) discloses a sterilizer that can be attached to the mouthpiece (doorway / exit of a beverage) of a PET bottle. The sterilizer sterilizes a beverage passing through a mouthpiece by irradiating it with ultraviolet rays when entering or exiting the beverage (for example, when drinking the beverage).

Japanese Unexamined Patent Publication No. 2004-196370 (Patent Document 3) discloses a cap that is attached to the mouth of a PET bottle and has an ultraviolet light emitting element. By irradiating ultraviolet rays from the ultraviolet light emitting element, the area around the mouth of the PET bottle is sterilized.

Japanese Unexamined Patent Publication No. 2017-21256 JP-A-2017-170342 Japanese Unexamined Patent Publication No. 2004-196370

In the sterilizer disclosed in Patent Document 2, the irradiation time of ultraviolet rays is limited to an extremely short time when the beverage passes through the doorway. Therefore, the bactericidal effect is not sufficient.

With the cap disclosed in Patent Document 3, the reach of ultraviolet rays is limited to the vicinity of the mouth, and the bactericidal effect on beverages inside the PET bottle is not sufficient.

The present disclosure has focused on the above problems, and an object of the present disclosure is to provide an ultraviolet irradiation device having a high bactericidal effect and a method of using the same.

The ultraviolet irradiation device of an example of the present disclosure includes a light emitting element, at least one electronic component, a light guide plate, a base material, and wiring. The light emitting element has a light emitting surface that emits ultraviolet rays having a wavelength of 150 to 300 nm. At least one electronic component controls the operation of the light emitting element. The light guide plate has a light emitting surface that intersects the end face in the thickness direction, and guides ultraviolet rays radiated to the end face to emit the ultraviolet rays from the light emitting surface. In the base material, the light emitting element is embedded so that the electrode and the light emitting surface are exposed, and at least one electronic component is embedded so that the electrode is exposed. The wiring is formed on the surface of the base material and connects the electrode of the light emitting element and the electrode of at least one electronic component. The light guide plate is supported by the base material so that the end face is in contact with the light emitting surface.

According to this disclosure, the end face of the light guide plate is in contact with the light emitting surface of the light emitting element. As a result, the ultraviolet rays emitted from the light emitting element are transmitted into the light guide plate with high efficiency. The ultraviolet rays transmitted into the light guide plate are emitted from the light emitting surfaces intersecting in the thickness direction of the light guide plate. As a result, ultraviolet rays can be irradiated over a wide range. As a result, it is possible to realize an ultraviolet irradiation device having a high bactericidal effect.

Another example of the ultraviolet irradiation device of the present disclosure includes a light emitting element, at least one electronic component, a light guide plate, and wiring. The light emitting element has a light emitting surface that emits ultraviolet rays having a wavelength of 150 to 300 nm. At least one electronic component controls the operation of the light emitting element. The light guide plate embeds a light emitting element and at least one electronic component so that the electrodes are exposed. The wiring is formed on the surface of the light guide plate and connects the electrode of the light emitting element and the electrode of at least one electronic component. The light emitting surface of the light emitting element is located in the light guide plate. The light guide plate guides ultraviolet rays emitted from the light emitting surface and emits them from the light emitting surfaces intersecting in the thickness direction.

Even with this disclosure, the ultraviolet rays emitted from the light emitting element are transmitted into the light guide plate with high efficiency. The ultraviolet rays transmitted into the light guide plate are emitted from the light emitting surfaces intersecting in the thickness direction of the light guide plate. As a result, ultraviolet rays can be irradiated over a wide range. As a result, it is possible to realize an ultraviolet irradiation device having a high bactericidal effect.

In the above disclosure, the material of the light guide plate is either a polymer of an acrylic acid ester, a polymer of a methacrylic acid ester, or a copolymer of tetrafluoroethylene and perfluoroalkoxyethylene. Alternatively, the material of the light guide plate may be quartz glass.

In the above disclosure, the ultraviolet irradiation device has a shape extending in the longitudinal direction. At least part of the wiring intersects a virtual plane that contains at least part of the light emitting surface. The virtual plane is orthogonal to the longitudinal direction.

It is conceivable that an excessive force is applied to the ultraviolet irradiation device from the outside, causing breakage near the boundary between the light emitting element and the light guide plate on the base material. According to the above disclosure, when a break occurs near the boundary between the light emitting element and the light guide plate in the base material, the wiring intersecting the virtual plane is broken. As a result, the power supply to the light emitting element is cut off, and the irradiation of deep ultraviolet rays from the light emitting element is stopped. As a result, even if the base material is broken, it is possible to prevent the deep ultraviolet rays from being directly irradiated to the outside.

In the above disclosure, at least one electronic component controls the light emitting element so as to emit light intermittently. According to this disclosure, the power consumption of the ultraviolet irradiation device can be reduced.

In the above disclosure, the thermal conductivity of the substrate is 1 W / mK or more. According to this disclosure, the heat generated by the light emitting element and at least one electronic component is efficiently dissipated through the substrate.

In the above disclosure, the light guide plate has a shape extending in the longitudinal direction. At least one electronic component is embedded in the light guide plate on one end side in the longitudinal direction. The light emitting element is embedded in the light guide plate on the other end side in the longitudinal direction. The light emitting surface faces the light emitting surface.

According to this disclosure, when the ultraviolet irradiation device is inserted into the beverage container with the other end in the longitudinal direction of the light guide plate at the head, the light emitting element is located deep in the beverage container. Since the light emitting surface of the light emitting element faces the light emitting surface of the light guide plate, high illuminance ultraviolet rays are irradiated in the vicinity of the light emitting element. As a result, even if the amount of the beverage in the beverage container is reduced, the beverage is efficiently irradiated with deep ultraviolet rays, and the bactericidal effect can be enhanced.

In one example of the present disclosure, the method of using the ultraviolet irradiation device is a step of inserting the ultraviolet irradiation device from an insertion port formed in the beverage container containing the beverage so that the light emitting surface is immersed in the beverage. And a step of energizing the light emitting element and emitting ultraviolet rays from the light emitting surface to the beverage.

According to this disclosure, since the ultraviolet rays can be irradiated from the wide light emitting surface of the light guide plate, the ultraviolet rays having a sufficient dose for sterilization reach a wide range in the beverage container. As a result, the bactericidal effect is enhanced.

In the above disclosure, at least one electronic component includes a switch. The switch has an operation unit that accepts an operation from the outside, and switches whether or not to supply electric power to the light emitting element according to the operation to the operation unit. The step of inserting the ultraviolet irradiation device includes a step of starting the supply of electric power to the light emitting element by bringing the operation unit into contact with the beverage container.

According to this disclosure, when the ultraviolet irradiation device is inserted into the beverage container, the power supply to the light emitting element is automatically started. As a result, the time and effort of the user's operation can be saved.

The beverage container includes a container body having an opening and a cap capable of opening and closing the opening. The outlet is formed in the container body or cap.

According to the present disclosure, it is possible to provide an ultraviolet irradiation device having a high bactericidal effect.

It is a front view which shows typically the ultraviolet irradiation apparatus which concerns on Embodiment 1. It is a rear view of the ultraviolet irradiation apparatus shown in FIG. It is a rear view when the protective film is omitted from the ultraviolet irradiation apparatus shown in FIG. It is a vertical cross-sectional view taken along the line IV-IV of FIG. It is sectional drawing which shows an example of a light guide plate. It is a figure which shows an example of the electronic circuit provided in the ultraviolet irradiation apparatus. It is a figure explaining the process of the first half in the manufacturing method of the ultraviolet irradiation apparatus which concerns on Embodiment 1. FIG. It is a figure explaining the latter half process in the manufacturing method of the ultraviolet irradiation apparatus which concerns on Embodiment 1. FIG. It is a front view of the beverage container which attached the ultraviolet irradiation apparatus according to the 1st usage method. It is a top view of the beverage container which attached the ultraviolet irradiation apparatus according to the 1st usage method. It is a vertical sectional view of a beverage container. It is a vertical cross-sectional view which shows the method of attaching the ultraviolet irradiation apparatus to a beverage container. It is a side view of the beverage container which attached the ultraviolet irradiation apparatus according to the 1st usage method. It is a top view of the beverage container which attached the ultraviolet irradiation apparatus according to the 2nd usage method. It is a vertical sectional view of the cap to which the ultraviolet irradiation device was attached according to the second usage method. It is a rear view of the ultraviolet irradiation apparatus which concerns on Embodiment 2. It is a vertical cross-sectional view of the ultraviolet irradiation apparatus shown in FIG. It is a rear view of the ultraviolet irradiation apparatus which concerns on Embodiment 3. It is a vertical cross-sectional view of the ultraviolet irradiation apparatus shown in FIG. It is a figure which shows an example of the usage method of the ultraviolet irradiation apparatus which concerns on a modification.

Hereinafter, embodiments relating to one aspect of the present invention will be described with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals and the description thereof will not be repeated. In the present specification, the notation in the form of "A to B" means the upper and lower limits of the range (that is, A or more and B or less), and when the unit is not described in A and the unit is described only in B, A The unit of and the unit of B are the same.

[Embodiment 1]
(Structure of UV irradiation device)
The structure of the ultraviolet irradiation device according to the first embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a front view schematically showing an ultraviolet irradiation device according to the first embodiment. FIG. 2 is a rear view of the ultraviolet irradiation device shown in FIG. FIG. 3 is a rear view when the protective film is omitted from the ultraviolet irradiation device shown in FIG. FIG. 4 is a vertical cross-sectional view taken along the line IV-IV of FIG.

As shown in FIGS. 1 to 4, the ultraviolet irradiation device 1 has a plate shape extended in the longitudinal direction (vertical direction). The size of the ultraviolet irradiation device 1 is not particularly limited, but is, for example, 10 × 100 × 1.5 mm. The ultraviolet irradiation device 1 includes a light emitting element 10 (see FIGS. 3 and 4), at least one electronic component, a light guide plate 20, a base material 30, a wiring 40 (see FIGS. 3 and 4), and a protective film 50 (see FIGS. 3 and 4). (See FIGS. 2 and 4).

The light emitting element 10 is an LED (Light Emitting Diode) that irradiates ultraviolet rays (deep ultraviolet rays) having a wavelength of 150 to 300 nm. For example, the light emitting element 10 is a rectangular parallelepiped having a wavelength of 3.5 × 3.5 × 1.2 mm and emits deep ultraviolet rays having a wavelength of 265 nm at an output of 50 mW. The light emitting element 10 irradiates deep ultraviolet rays from the light emitting surface 10b (see FIGS. 3 and 4). The average traveling direction of the deep ultraviolet rays emitted from the light emitting surface 10b is the normal direction of the light emitting surface 10b (hereinafter, referred to as "light emitting direction 60"). Electrodes 10a (see FIG. 3) are formed on the other surface of the light emitting element 10.

At least one electronic component is a component for controlling the operation of the light emitting element 10. As shown in FIGS. 3 and 4, at least one electronic component includes, for example, a battery 11, a switch 12, an IC chip 13, and a chip component 14. The chip component 14 is, for example, a resistor, a capacitor, a diode, or the like. Although three chip components 14 are shown in FIG. 3, only one of them is designated by the reference numeral “14”.

The battery 11, the switch 12, the IC chip 13, and the chip component 14 have electrodes 11a, 12a, 13a, and 14a, respectively. Although each component has a plurality of electrodes, only one of the plurality of electrodes is designated by a reference numeral in FIG. Further, the switch 12 has a button 12b that accepts an operation from the outside, and switches whether or not to supply electric power to the light emitting element 10 according to the operation of the button 12b. The button 12b is located at one end 1a (upper end) in the longitudinal direction of the ultraviolet irradiation device 1.

The light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14 are arranged on the one end 1a side in the longitudinal direction of the ultraviolet irradiation device 1.

The light guide plate 20 is made of a material that transmits deep ultraviolet rays and guides the deep ultraviolet rays. The material that transmits deep ultraviolet rays is a material that has a transmittance of 50% or more of deep ultraviolet rays when the thickness is 2 mm. Materials that transmit deep ultraviolet rays include, for example, a polymer of an acrylic acid ester, a polymer of a methacrylate ester (for example, polymethyl methacrylate resin (PMMA)), and a copolymer of tetrafluoroethylene and perfluoroalkoxy ethylene (for example). For example, polytetrafluoroethylene (PFA)), quartz glass can be adopted. The light guide plate 20 is arranged on the other end 1b side in the longitudinal direction of the ultraviolet irradiation device 1.

FIG. 5 is a cross-sectional view showing an example of the light guide plate. As shown in FIG. 5, the light guide plate 20 has a light emitting surface 20a, a back surface 20b, and an end surface 20c.

The light emitting surface 20a is a surface that is guided inside the light guide plate 20 and emits light whose optical path has been changed by the optical path changing unit 21 described later. The light emitting surface 20a constitutes a front surface which is one of two planes orthogonal to the thickness direction. The back surface 20b is a surface parallel to the light emitting surface 20a, and is a surface on which the optical path changing portion 21 described later is arranged.

The light incident on the light guide plate 20 from the end surface 20c is totally reflected by the light emitting surface 20a or the back surface 20b and travels in the light guide plate 20. However, as shown in FIG. 5, a plurality of optical path changing portions 21 are formed on the back surface 20b inside the light guide plate 20. The optical path changing unit 21 changes the optical path of the light traveling in the light guide plate 20 and emits the light from the light emitting surface 20a. As a result, the light incident from the end surface 20c is emitted from the light emitting surface 20a.

As shown in FIGS. 3 and 4, the base material 30 supports a light emitting element 10, a battery 11, a switch 12, an IC chip 13, a chip component 14, and a light guide plate 20. The base material 30 is made of resin. The base material 30 is preferably made of a resin that does not transmit deep ultraviolet rays. The resin that does not transmit deep ultraviolet rays is a material having a transmittance of 0% for deep ultraviolet rays when the thickness is 2 mm. Further, the base material 30 is preferably composed of a resin having a thermal conductivity of 1 W / mK or more. That is, the thermal conductivity of the base material 30 is preferably 1 W / mK or more. For example, the base material 30 is made of white polycarbonate (PC). The thermal conductivity of white polycarbonate is 1.7 W / mK.

The base material 30 exemplified in FIGS. 1 to 4 has a plate shape extended in the longitudinal direction (vertical direction), and has two planes orthogonal to the thickness direction, a front surface 30a and a back surface 30b. A recess 30c having the same shape as the light guide plate 20 is formed on the front surface 30a.

The base material 30 supports these components by embedding a light emitting element 10, a battery 11, a switch 12, an IC chip 13 and a chip component 14 so that the electrodes 10a to 14a are exposed on the back surface 30b, respectively. The base material 30 is made of a resin having a thermal conductivity of 1 W / mK or more, such as white polycarbonate, and is based on the heat generated by the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14. Heat is dissipated through the material 30.

The surfaces of the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14 on which the electrodes 10a to 14a are formed are flush with the back surface 30b of the base material 30.

The light emitting element 10 is embedded in the base material 30 so that the light emitting surface 10b is exposed on the side surface of the recess 30c. As a result, the light emitting element 10 can emit deep ultraviolet rays from the light emitting surface 10b toward the recess 30c.

The switch 12 is embedded in the base material 30 so that the button 12b is exposed. As a result, the user can operate the button 12b.

The light guide plate 20 is fitted (stacked) in the recess 30c of the base material 30 so that the end surface 20c is in contact with the light emitting surface 10b of the light emitting element 10. As a result, as shown in FIG. 4, the deep ultraviolet rays 70 emitted from the light emitting surface 10b of the light emitting element 10 enter the light guide plate 20 from the end surface 20c, travel through the light guide plate 20, and then the light guide plate 20. It emits light from the light emitting surface 20a. As a result, the deep ultraviolet rays 70 can be irradiated over a wide range.

The wiring 40 is formed on the back surface 30b of the base material 30, and is electrically connected to any of the electrodes 10a to 14a of the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14. As a result, when the button 12b of the switch 12 is operated, electric power is supplied to the light emitting element 10, and the light emitting element 10 irradiates deep ultraviolet rays.

As described above, the back surface 30b of the base material 30 is on the same plane as the surfaces on which the electrodes 10a to 14a of the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are formed. Therefore, the wiring 40 is easily formed by injecting silver (Ag) ink, for example, by using an inkjet printing method. The inkjet printing method is a printing method in which ink is ejected from a nozzle and particulate ink is deposited on the surface to be ejected. The wiring 40 may be made of a material other than Ag, or may be formed by another method, and the thickness and thickness of the wiring are not particularly limited.

The wiring 40 includes wirings 40a and 40b (see FIG. 3) connected to the electrode 10a of the light emitting element 10. The wirings 40a and 40b are formed so as to intersect the virtual plane 45 including the light emitting surface 10b of the light emitting element 10. The virtual plane 45 is orthogonal to the longitudinal direction of the ultraviolet irradiation device 1. When an excessive force is applied to the ultraviolet irradiation device 1 from the outside, the ultraviolet irradiation device 1 may break along a plane orthogonal to the longitudinal direction. In particular, breakage is likely to occur near the boundary between the light emitting element 10 and the light guide plate 20 on the base material 30. When the base material 30 is broken and the light emitting surface 10b of the light emitting element 10 is exposed, there is a possibility that deep ultraviolet rays affecting the human body are directly irradiated to the outside. However, since the wirings 40a and 40b are formed so as to intersect the virtual plane 45, the wirings 40a and 40b are disconnected when a break occurs in the vicinity of the boundary between the light emitting element 10 and the light guide plate 20 in the base material 30. As a result, the power supply to the light emitting element 10 is cut off, and the irradiation of deep ultraviolet rays from the light emitting element 10 is stopped. As a result, even if the base material 30 is broken, it is possible to prevent the deep ultraviolet rays that affect the human body from being directly irradiated to the outside.

The protective film 50 is formed on the back surface 30b of the base material 30 so as to cover the light emitting element 10, the battery 11, the switch 12, the IC chip 13, the chip component 14, and the wiring 40. The protective film 50 is composed of, for example, an insulating resin coating material kneaded with a silver-based inorganic antibacterial agent, and is formed by applying the resin coating material on the back surface 30b. The thickness of the protective film 50 is, for example, about 0.1 mm. The protective film 50 protects the light emitting element 10, the battery 11, the switch 12, the IC chip 13, the chip component 14, and the wiring 40 from water, dust, and the like contained in the external environment.

(Electronic circuit)
FIG. 6 is a diagram showing an example of an electronic circuit provided in the ultraviolet irradiation device. The electronic circuit 100 illustrated in FIG. 6 is realized by a light emitting element 10, a battery 11, a switch 12, an IC chip 13, a chip component 14, and wiring 40. As shown in FIG. 6, the electronic circuit 100 includes a power supply 101, a circuit connection unit 102, a timer 103, a lighting control unit 104, and an LED 105.

The power supply 101 is composed of a battery 11 and supplies electric power. The circuit connection portion 102 is composed of a switch 12. The circuit connection unit 102 is connected between the power supply 101 and the lighting control unit 104, and switches the power supply from the power supply 101 to the lighting control unit 104 on and off.

The timer 103 and the lighting control unit 104 are composed of an IC chip 13. When the lighting control unit 104 receives the power supply from the power supply 101 by the circuit connection unit 102, the lighting control unit 104 controls the LED 105 so as to emit light intermittently by using the count value of the timer 103. For example, when the power supply from the power supply 101 is started, the lighting control unit 104 causes the LED 105 to emit light for 60 seconds and then emits the LED 105 for 30 seconds at 5-minute intervals. As a result, the power consumption of the power supply 101 can be suppressed.

The LED 105 is composed of a light emitting element 10 and irradiates deep ultraviolet rays having a wavelength of 150 to 300 nm.

(Manufacturing method of ultraviolet irradiation device)
Next, a method of manufacturing the ultraviolet irradiation device 1 will be described with reference to FIGS. 7 and 8. FIG. 7 is a diagram illustrating the first half step in the method for manufacturing the ultraviolet irradiation device according to the first embodiment. FIG. 8 is a diagram illustrating a latter half step in the method for manufacturing the ultraviolet irradiation device according to the first embodiment.

(First step)
As shown in FIG. 7A, the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are temporarily fixed by being attached to the temporary fixing sheet 80 with an adhesive (not shown). At this time, the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14 are attached to the temporary fixing sheet 80 so that the electrodes are in contact with the temporary fixing sheet 80. The arrangement of the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 is predetermined.

As the material of the temporary fixing sheet 80, for example, polyethylene terephthalate (PET) or the like can be adopted. The temporary fixing sheet 80 is preferably made of a material capable of transmitting ultraviolet rays for the reason described later.

Temporary fixing is performed, for example, by using an ultraviolet curable adhesive (not shown) applied to one surface of the temporary fixing sheet 80. For example, an ultraviolet curable adhesive (for example, GL-3005H manufactured by Glulab Co., Ltd.) is applied to a temporary fixing sheet 80 made of PET having a thickness of 50 μm to a thickness of 2 to 3 μm. This coating may be performed by using a method such as an inkjet printing method. After that, the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14 are installed at predetermined positions. ^{Then, the adhesive is cured by irradiating, for example, ultraviolet rays having a strength of 3000 mJ / cm 2} from the surface of the temporary fixing sheet 80 to which the adhesive is not applied, and the light emitting element 10, the battery 11, the switch 12, and the IC chip 13 And the chip component 14 is temporarily fixed to the temporary fixing sheet 80.

(Second step)
Next, as shown in FIG. 7B, the temporary fixing sheet 80 is arranged in the molding die 90. FIG. 7B shows a vertical cross-sectional view of the molding die 90. The molding die 90 is composed of an upper die 91 and a lower die 92, and a space 93 is formed between the upper die 91 and the lower die 92. The mold 90 is prefabricated so that the shape of the space 93 matches the shape of the base material 30. Specifically, a convex portion 94 having a shape corresponding to the concave portion 30c of the base material 30 is formed on the surface of the upper mold 91 on the lower mold 92 side.

The temporary fixing sheet 80 is arranged in the molding die 90 so that the surface on the side where the light emitting element 10 or the like is not attached is in contact with the flat inner surface of the lower die 92. The light emitting surface 10b of the light emitting element 10 is in contact with the side surface of the convex portion 94 of the upper die 91. Further, the button 12b of the switch 12 is inserted into the recess formed on the side surface of the upper mold 91.

The molten resin is injected into the space 93 in the molding die 90 by an injection molding method. The conditions for injection molding are appropriately selected according to the resin material. For example, when white polycarbonate (PC) is used, injection molding is performed at an injection resin temperature of 270 ° C. and an injection pressure of 100 MPa.

The resin injected into the space 93 is filled so as to surround the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14. However, since the light emitting surface 10b of the light emitting element 10 is in contact with the side surface of the convex portion 94 of the upper die 91, the resin does not flow into the portion of the light emitting surface 10b that is in contact with the side surface of the convex portion 94. Further, since the button 12b of the switch 12 is inserted into the recess formed on the side surface of the upper mold 91, the resin does not flow into the button 12b either.

(Third step)
By curing the resin injection-molded in the space 93 in the second step, the base material 30 in which the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are embedded is molded. As shown in FIG. 7 (c), the base material 30 is taken out from the mold 90. In FIG. 7C, a plan view is shown in the upper row, a vertical sectional view is shown in the middle row, and a bottom view is shown in the lower row.

The temporary fixing sheet 80 is deformed by the temperature of the resin at the time of injection molding and peels off from the base material 30. The thickness of the temporary fixing sheet 80 is smaller than the thickness of the base material 30. Therefore, in the base material 30, the step between the surface that was in contact with the temporary fixing sheet 80 and the surface that is not in contact with the temporary fixing sheet 80 is so small that it can be ignored.

When the temporary fixing sheet 80 is peeled off from the base material 30, the portion of the back surface 30b of the base material 30 that has been in contact with the temporary fixing sheet 80 is exposed. As described above, in the first step, the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are attached to the temporary fixing sheet 80 so that the electrodes come into contact with the temporary fixing sheet 80. Therefore, the electrodes 10a to 14a of the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are exposed on the back surface 30b of the base material 30. Since the surfaces of the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14 on which the electrodes were formed were in contact with the temporary fixing sheet 80, they were continuous with the back surface 30b of the base material 30 and were the same as the back surface 30b. It will be on a plane.

Since the convex portion 94 is formed on the upper mold 91, the concave portion 30c is formed on the front surface 30a of the base material 30. Since the light emitting surface 10b of the light emitting element 10 is in contact with the side surface of the convex portion 94, it is exposed on the side surface of the concave portion 30c.

Since the button 12b of the switch 12 was inserted into the recess of the upper die 91, it protrudes from the base material 30.

(4th step)
As shown in FIG. 8A, the light guide plate 20 is fitted into the recess 30c of the base material 30. In FIG. 8A, a plan view is shown in the upper row, and a vertical sectional view is shown in the lower row. The light guide plate 20 is arranged so that the end surface 20c is in contact with the light emitting surface 10b of the light emitting element 10 and the back surface 20b is in contact with the bottom surface of the recess 30c. As a result, the light emitting surface 20a of the light guide plate 20 is exposed to the front surface 30a of the base material 30.

(Fifth step)
As shown in FIG. 8B, a wiring 40 connected to any of the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the electrodes 10a to 14a of the chip component 14 on the back surface 30b of the base material 30. To form. In FIG. 8B, a plan view is shown in the upper row, and a vertical sectional view is shown in the lower row.

The wiring 40 is formed by, for example, a printing method. Specifically, a method of injecting a conductive material (for example, silver ink or the like) with an inkjet printer or the like for printing, a method of using an aerosol, a method of printing a silver paste with a dispenser or the like, or the like may be used.

The wirings 40a and 40b formed in the vicinity of the light emitting element 10 are formed so as to bypass the virtual plane 45 including the light emitting surface 10b of the light emitting element 10.

(6th step)
As shown in FIG. 8C, a protective film 50 is formed on the back surface 30b of the base material 30 so as to cover the light emitting element 10, the battery 11, the switch 12, the IC chip 13, the chip component 14, and the wiring 40. .. FIG. 8 (c) shows a vertical sectional view.

The protective film 50 is formed, for example, by applying a resin coating material on the back surface 30b to a thickness of about 0.1 mm. The resin coating material is applied by using a known technique such as an inkjet printing method, a method using an aerosol, or a method of printing with a dispenser or the like.

By forming the protective film 50, the light emitting element 10, the battery 11, the switch 12, the IC chip 13, the chip component 14, and the wiring 40 are protected from the external environment.

(How to use the UV irradiation device)
(First usage)
A first method of using the ultraviolet irradiation device 1 will be described with reference to FIGS. 9 to 13. FIG. 9 is a front view of a beverage container to which an ultraviolet irradiation device is attached according to the first usage method. FIG. 10 is a plan view of a beverage container to which an ultraviolet irradiation device is attached according to the first usage method. FIG. 11 is a vertical cross-sectional view of the beverage container. FIG. 12 is a vertical cross-sectional view showing a method of attaching an ultraviolet irradiation device to a beverage container. FIG. 13 is a side view of a beverage container to which an ultraviolet irradiation device is attached according to the first usage method.

The beverage container 200 exemplified in FIGS. 9 to 13 is a PET bottle made of polyethylene terephthalate (PET), and includes a cap 210 and a container body 220.

The container body 220 has a bottomed substantially cylindrical shape. An opening 225 (see FIG. 11) is formed in the upper part of the container body 220. The cap 210 can open and close the opening 225.

An attachment portion 230 for attaching the ultraviolet irradiation device 1 is formed on the upper portion of the side wall of the container body 220. As shown in FIG. 10, the mounting portion 230 is recessed inward from the surrounding side wall. As shown in FIG. 11, a step is formed between the mounting portion 230 and the side wall of the container body 220 below the mounting portion 230.

The lower wall 231 of the mounting portion 230 has a rectangular shape in a plan view, and has a size similar to the cross-sectional shape when the ultraviolet irradiation device 1 is cut in a plane orthogonal to the longitudinal direction thereof. Not shown or perforations are formed around the lower wall 231. The cut or perforation is formed, for example, by half-cut processing. The perforations may be formed by all-cut processing. In this case, a sealing film is provided so as to cover the perforations in order to prevent the beverage from leaking from the perforations formed by the entire cutting process.

As shown in FIG. 12, the user makes the other end 1b (the end on the side where the light guide plate 20 is arranged) of the ultraviolet irradiation device 1 in the longitudinal direction abuts on the lower wall 231 of the mounting portion 230, and cuts or cuts. The lower wall 231 is broken along the perforation. As a result, an insertion port 232 for inserting the ultraviolet irradiation device 1 into the container body 220 is formed. The user inserts the ultraviolet irradiation device 1 into the insertion port 232 formed in the container body 220. At this time, the user inserts the ultraviolet irradiation device 1 into the container main body 220 with the other end 1b (the end on the side where the light guide plate 20 is arranged) as the head.

As shown in FIGS. 9 and 13, when the other end 1b of the ultraviolet irradiation device 1 reaches the vicinity of the bottom of the container body 220, the ultraviolet irradiation is performed so that the entire light guide plate 20 is located inside the container body 220. The size of the device 1 is pre-designed. Further, as shown in FIG. 9, when the other end 1b of the ultraviolet irradiation device 1 reaches the vicinity of the bottom of the container body 220, the one end 1a of the ultraviolet irradiation device 1 is located outside the container body 220. , The size of the ultraviolet irradiation device 1 is designed in advance. The user inserts the ultraviolet irradiation device 1 into the container body 220 until the other end 1b reaches the bottom of the container body 220, and then operates the button 12b of the switch 12 arranged on the one end 1a. At this time, as shown in FIG. 13, the light emitting surface 20a of the light guide plate 20 of the ultraviolet irradiation device 1 is immersed in the beverage L in the container main body 220. The light emitting element 10 is energized according to the operation corresponding to the button 12b, and the deep ultraviolet rays 70 emitted from the light emitting element 10 are guided into the light guide plate 20 and irradiated toward the beverage from the wide light emitting surface 20a. .. That is, the deep ultraviolet rays 70 are irradiated over a wide range in the container body 220. As a result, deep ultraviolet rays can easily reach the beverage L located farther than the light emitting element 10, and the bactericidal effect of the beverage is enhanced.

The ultraviolet irradiation device 1 is arranged near the side wall of the container body 220. Therefore, there is a possibility that deep ultraviolet rays having sufficient strength for sterilization do not reach the beverage L located in the region far from the ultraviolet irradiation device 1 in the container main body 220. However, since the beverage L in the container body 220 flows according to the user's carrying of the beverage container 200, the entire beverage in the container body 220 can be sterilized.

Polyethylene terephthalate, which is the material of the beverage container 200, does not transmit deep ultraviolet rays. Further, as the material of the base material 30, a resin (for example, white polycarbonate) that does not transmit deep ultraviolet rays is used. As a result, it is possible to prevent the deep ultraviolet rays irradiated in the container body 220 from leaking to the outside.

As shown in FIG. 10, when the ultraviolet irradiation device 1 is inserted into the insertion port 232 formed in the attachment portion 230 of the container body 220, one end 1a of the ultraviolet irradiation device 1 fits in the attachment portion 230. Therefore, the ultraviolet irradiation device 1 does not interfere with the use of the beverage container 200.

After drinking the beverage, the user may remove the ultraviolet irradiation device 1 from the container body 220 and discard the beverage container 200. The user can attach the ultraviolet irradiation device 1 to another beverage container 200 and use it again.

(Second usage)
A second method of using the ultraviolet irradiation device 1 will be described with reference to FIGS. 14 and 15. FIG. 14 is a plan view of a beverage container to which an ultraviolet irradiation device is attached according to the second usage method. FIG. 15 is a vertical cross-sectional view of a cap to which an ultraviolet irradiation device is attached according to the second usage method.

As shown in FIGS. 14 and 15, the ultraviolet irradiation device 1 is inserted into an insertion port 211 provided in the cap 210. Only the end of the ultraviolet irradiation device 1 on the one end 1a side protrudes above the cap 210. By attaching the cap 210 to the container body 220, the light guide plate 20 of the ultraviolet irradiation device 1 is immersed in the beverage in the container body 220. By operating the button 12b of the switch 12 provided on one end 1a of the ultraviolet irradiation device 1 protruding above the cap 210, the user can irradiate the beverage with deep ultraviolet rays and sterilize the beverage.

(Action / effect)
As described above, the ultraviolet irradiation device 1 according to the first embodiment includes the light emitting element 10 and at least one electronic component (battery 11, switch 12, IC chip 13 and chip component 14) for controlling the operation of the light emitting element 10. ), The light guide plate 20, the base material 30, and the wiring 40. The light emitting element 10 has a light emitting surface 10b that emits ultraviolet rays having a wavelength of 150 to 300 nm. The light guide plate 20 has an end face 20c and a light emitting surface 20a intersecting in the thickness direction, and guides ultraviolet rays irradiated to the end face 20c to emit light from the light emitting surface 20a. In the base material 30, the light emitting element 10 is embedded so that the electrodes 10a and the light emitting surface 10b are exposed, and the battery 11, the switch 12, the IC chip 13 and the chip component 14 are embedded so that the electrodes 11a to 14a are exposed. The wiring 40 is formed on the back surface 30b of the base material 30, and connects the electrodes 10a of the light emitting element 10 with the electrodes 11a to 14a of the battery 11, the switch 12, the IC chip 13, and the chip component 14. The light guide plate 20 is supported by the base material 30 so that the end surface 20c is in contact with the light emitting surface 10b.

According to the above configuration, the end surface 20c of the light guide plate 20 is in contact with the light emitting surface 10b of the light emitting element 10. As a result, the ultraviolet rays emitted from the light emitting element 10 are transmitted into the light guide plate 10 with high efficiency. The ultraviolet rays transmitted into the light guide plate 10 are emitted from the light emitting surface 20a intersecting the thickness direction of the light guide plate 20. As a result, ultraviolet rays can be irradiated over a wide range. As a result, it is possible to realize an ultraviolet irradiation device having a high bactericidal effect.

Further, the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are embedded in the base material 30. Therefore, the ultraviolet irradiation device 1 can be made smaller and thinner. As a result, the ultraviolet irradiation device 1 becomes easy to carry.

Further, by making the surface on which the electrodes of the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are formed flush with the base material 30, on the surface of the base material 30, these components can be formed. There is no unevenness due to it. Therefore, a protective film 50 that protects these parts from moisture, water, dust, etc. can be provided by a simple method.

The ultraviolet irradiation device 1 has a shape extended in the longitudinal direction. The wiring 40 preferably includes wirings 40a and 40b that intersect the virtual plane 45 including the light emitting surface 10b. The virtual plane 45 is orthogonal to the longitudinal direction of the ultraviolet irradiation device 1.

It is conceivable that an excessive force is applied to the ultraviolet irradiation device 1 from the outside, causing breakage in the vicinity of the boundary between the light emitting element 10 and the light guide plate 20 in the base material 30. When the base material 30 is broken and the light emitting surface 10b of the light emitting element 10 is exposed, there is a possibility that deep ultraviolet rays affecting the human body are directly irradiated to the outside. However, according to the above configuration, when a break occurs near the boundary between the light emitting element 10 and the light guide plate 20 on the base material 30, the wirings 40a and 40b intersecting the virtual plane 45 are disconnected. As a result, the power supply to the light emitting element 10 is cut off, and the irradiation of deep ultraviolet rays from the light emitting element 10 is stopped. As a result, even if the base material 30 is broken, it is possible to prevent the deep ultraviolet rays that affect the human body from being directly irradiated to the outside.

It is preferable that the IC chip 13 controls the light emitting element 10 so as to emit light intermittently. As a result, the power consumption of the ultraviolet irradiation device 1 can be reduced.

The thermal conductivity of the base material 30 is preferably 1 W / mK or more. As a result, the heat generated by the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 is dissipated through the base material 30.

The method of using the ultraviolet irradiation device 1 includes the following steps (A) and (B).
Step (A): Ultraviolet rays so that the light emitting surface 20a of the light guide plate 20 is immersed in the beverage from the insertion port (insertion port 232 in FIG. 12 or the insertion port 211 shown in FIG. 15) formed in the beverage container 200. Insert the irradiation device 1.
Step (B): By operating the button 12b of the switch 12, the light emitting element 10 is energized, and ultraviolet rays are emitted from the light emitting surface 20a of the light guide plate 20 to the beverage.

According to the above usage method, the ultraviolet irradiation device 1 is directly incorporated into a beverage container 200 such as a PET bottle. Therefore, the beverage container 200, which is convenient to carry, can be used as a simple beverage storage bottle.

Furthermore, since the beverage is sterilized using ultraviolet rays, it is possible to prevent impurities from being mixed into the beverage container 200.

Further, since the ultraviolet rays can be irradiated from the wide light emitting surface 20a of the light guide plate 20, the ultraviolet rays having a sufficient dose for sterilization reach in a wide range in the beverage container 200. As a result, the bactericidal effect is enhanced.

Even if there is a region in the beverage container where only low-dose ultraviolet rays reach, the entire beverage can be sterilized by the flow of the beverage in the beverage container 200 when the beverage container 200 is carried. ..

[Embodiment 2]
The ultraviolet irradiation device 1 according to the first embodiment includes a light guide plate 20, a light emitting element 10, a battery 11, a switch 12, an IC chip 13, and a base material 30 in which a chip component 14 is embedded as separate members. However, in the ultraviolet irradiation device according to the second embodiment, the light emitting element 10, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are embedded in the light guide plate. As a result, the base material 30 can be omitted, and the number of parts is reduced.

FIG. 16 is a rear view of the ultraviolet irradiation device according to the second embodiment. FIG. 17 is a vertical cross-sectional view of the ultraviolet irradiation device shown in FIG. In FIG. 16, the protective film 50 is not shown.

As shown in FIGS. 16 and 17, the ultraviolet irradiation device 2 according to the second embodiment includes a light guide plate 25 instead of the light guide plate 20 and the base material 30 as compared with the ultraviolet irradiation device 1 of the first embodiment. It differs in that.

The light guide plate 25 is made of a material that transmits deep ultraviolet rays. The light guide plate 25 is formed, for example, by using the same injection molding method as the base material 30 of the first embodiment. Therefore, the material of the light guide plate 25 is, for example, a polymer of an acrylic acid ester, a polymer of a methacrylate ester (for example, polymethyl methacrylate resin (PMMA)), or a copolymer of ethylene tetrafluoride and perfluoroalkoxy ethylene. A resin such as (eg, polytetrafluoroethylene (PFA)).

The light guide plate 25 has a plate shape extended in the longitudinal direction (vertical direction). The size of the light guide plate 25 is not particularly limited, but is appropriately set according to the size of the beverage container to which the ultraviolet irradiation device 2 is attached. For example, the size of the light guide plate 25 is 10 × 100 × 1.5 mm.

As shown in FIG. 17, the light guide plate 25 has a front surface 25a and a back surface 25b. The front surface 25a is one of two planes orthogonal to the thickness direction. The back surface 25b is a surface parallel to the front surface 25a.

The light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14 are embedded in the light guide plate 25 so that the electrodes 10a to 14a are exposed on the back surface 25b. The wiring 40 is formed on the back surface 25b of the light guide plate 25, and is electrically connected to any of the electrodes 10a to 14a of the light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14. The protective film 50 is formed on the back surface 25b of the light guide plate 25 so as to cover the light emitting element 10, the battery 11, the switch 12, the IC chip 13, the chip component 14, and the wiring 40.

The light emitting element 10, the battery 11, the switch 12, the IC chip 13, and the chip component 14 are embedded in the light guide plate 25 on one end 25c (upper end) side in the longitudinal direction.

The light emitting surface 10b of the light emitting element 10 is located in the light guide plate 25 so as to face the other end 25d in the longitudinal direction of the light guide plate 25. Therefore, the deep ultraviolet rays emitted from the light emitting surface 10b in the light emitting direction 60 (the normal direction of the light emitting surface 10b) immediately travel in the light guide plate 25. That is, deep ultraviolet rays can be transmitted to the light guide plate 25 with a small transmission loss.

On the back surface 25b of the light guide plate 25, a plurality of optical path changing portions (not shown) are formed in a region 25e on the other end 25d side of the light emitting surface 10b of the light emitting element 10. Similar to the optical path changing portion 21 shown in FIG. 5, the plurality of optical path changing portions formed on the back surface 25b change the optical path of the deep ultraviolet rays traveling in the light guide plate 25 and emit them from the front surface 25a. That is, the region of the front surface 25a facing the region 25e of the back surface 25b constitutes a light emitting surface.

As described above, the ultraviolet irradiation device 2 according to the second embodiment includes the light guide plate 25 instead of the light guide plate 20 and the base material 30 as compared with the ultraviolet irradiation device 1 according to the first embodiment. The light guide plate 25 embeds a light emitting element 10, a battery 11, a switch 12, an IC chip 13, and a chip component 14 so that the electrodes 10a to 14a are exposed. The wiring 40 is formed on the back surface 25b of the light guide plate 25, and connects the electrodes 10a of the light emitting element 10 with the electrodes 11a to 14a of the battery 11, the switch 12, the IC chip 13, and the chip component 14. The light emitting surface 10b of the light emitting element 10 is located in the light guide plate 25. The light guide plate 25 guides ultraviolet rays emitted from the light emitting surface 10b and emits them from the front surface 25a (light emitting surface) intersecting in the thickness direction.

Even with the above configuration, the ultraviolet rays emitted from the light emitting element 10 are transmitted into the light guide plate 25 with high efficiency. The ultraviolet rays transmitted into the light guide plate 25 are emitted from the front surface 25a of the light guide plate 25 that intersects in the thickness direction. As a result, ultraviolet rays can be irradiated over a wide range. As a result, it is possible to realize an ultraviolet irradiation device having a high bactericidal effect.

[Embodiment 3]
The ultraviolet irradiation device according to the third embodiment is a modification of the second embodiment. The ultraviolet irradiation device according to the third embodiment will be described with reference to FIGS. 18 and 19. FIG. 18 is a rear view of the ultraviolet irradiation device according to the third embodiment. FIG. 19 is a vertical cross-sectional view of the ultraviolet irradiation device shown in FIG. In FIG. 18, the protective film 50 is not shown.

As shown in FIGS. 18 and 19, in the ultraviolet irradiation device 3 according to the third embodiment, the battery 11, the switch 12, the IC chip 13 and the chip component 14 are embedded in the light guide plate 25 on one end 25c side in the longitudinal direction. Will be done.

The light emitting element 10 is embedded in the light guide plate 25 on the other end 25d side in the longitudinal direction. In the light emitting element 10 provided in the ultraviolet irradiation device 3, the light emitting surface 10b is located on the back side of the surface on which the electrode 10a is formed. Therefore, the light emitting surface 10b faces the front surface 25a of the light guide plate 25.

A part of the deep ultraviolet rays 70 emitted from the light emitting surface 10b of the light emitting element 10 in the light emitting direction 60 is emitted to the outside without being reflected by the front surface 25a of the light guide plate 25. The rest of the deep ultraviolet rays 70 emitted from the light emitting surface 10b in the light emitting direction 60 is reflected by the front surface 25a of the light guide plate 25 and travels in the light guide plate 10 (see the broken line arrow 61 in FIG. 19). Similar to the second embodiment, a plurality of optical path changing portions are formed in the region 25e on the other end 25d side of the back surface 25b of the light guide plate 25. Therefore, the deep ultraviolet rays 70 are emitted to the outside from the region of the front surface 25a of the light guide plate 25 facing the region 25e of the back surface 25b. However, since the light emitting surface 10b faces the front surface 25a of the light guide plate 25, the amount of deep ultraviolet rays 70 emitted from the front surface 25a increases as it approaches the light emitting element 10.

The ultraviolet irradiation device 3 is inserted into the beverage container with the other end 25d at the head. As a result, the light emitting element 10 arranged on the other end 25d side becomes closer to the bottom in the beverage container. As a result, even if the amount of the beverage in the beverage container is reduced, the beverage is efficiently irradiated with deep ultraviolet rays, and the bactericidal effect can be enhanced.

As shown in FIG. 19, the protective film 50 is formed on the back surface 25b of the light guide plate 25 so as to cover the light emitting element 10, the battery 11, the switch 12, the IC chip 13, the chip component 14, and the wiring 40. The battery 11, the switch 12, the IC chip 13, and the chip component 14 are arranged on the one end 25c side of the light guide plate 25, and the light emitting element 10 is arranged on the other end 25d side of the light guide plate 25. Therefore, the protective film 50 is formed so as to cover most of the back surface 25b of the light guide plate 25. The protective film 50 is preferably composed of a resin coating material in which an inorganic material (for example, alumina or the like) is kneaded. As a result, the protective film 50 has an action of reflecting deep ultraviolet rays. As a result, leakage of deep ultraviolet rays from the back surface 25b of the light guide plate 25 can be suppressed.

[Modification example]
In the above description, the switch 12 is arranged so that the button 12b projects upward from the upper end surface of the ultraviolet irradiation device. However, the arrangement position of the switch 12 is not limited to this. For example, the switch 12 may be arranged so that the button 12b projects laterally from the side end surface of the ultraviolet irradiation device.

FIG. 20 is a diagram showing an example of how to use the ultraviolet irradiation device according to the modified example. In the ultraviolet irradiation device 1 illustrated in FIG. 20, the switch 12 is arranged so that the button 12b projects laterally from the side end surface of the ultraviolet irradiation device 1. The attachment portion 230 of the container body 220 to which the ultraviolet irradiation device 1 is attached is provided with a convex portion 233 that contacts the button 12b. As a result, the user can start supplying electric power to the light emitting element 10 by bringing the button 12b into contact with the container body 220 in which the insertion port 232 is formed.

Although FIG. 20 shows an example in which the container body 220 and the button 12b are brought into contact with each other, when the ultraviolet irradiation device is inserted into the cap 210 as shown in FIGS. 14 and 15, the cap 210 and the button 12b are used. May start supplying electric power to the light emitting element 10.

In the above description, the ultraviolet irradiation device including the light emitting element 10 having a rectangular parallelepiped shape has been described. When the light emitting element 10 has a rectangular parallelepiped shape, the light emitting surface 10b has a planar shape. However, the shape of the light emitting element 10 is not particularly limited. For example, the light emitting element 10 may have a dome-shaped light emitting surface 10b. Even when the light emitting element 10 has such a non-planar light emitting surface 10b, it includes at least a part of the light emitting surface 10b and intersects a virtual plane orthogonal to the longitudinal direction of the ultraviolet irradiation device. At least a part of the wiring 40 may be formed. When an excessive force is applied from the outside to the ultraviolet irradiation device having a shape extending in the longitudinal direction, the ultraviolet irradiation device may break along a plane orthogonal to the longitudinal direction. When the light emitting surface 10b of the light emitting element 10 is exposed by the breakage, deep ultraviolet rays affecting the human body can be directly irradiated to the outside. However, since at least a part of the wiring 40 is formed so as to include at least a part of the light emitting surface 10b and intersect with a virtual plane orthogonal to the longitudinal direction of the ultraviolet irradiation device, the light emitting element 10 is simultaneously subjected to the breakage. Power supply is cut off. Therefore, it is possible to prevent deep ultraviolet rays from being directly irradiated to the outside from the light emitting surface 10b.

The battery 11 may be a rechargeable battery. That is, the battery 11 has a charging terminal and stores the electric power input to the charging terminal. In this case, the battery 11 is embedded in the base material 30 or the light guide plate 25 so that the charging terminals are exposed. As a result, the user can charge the battery 11 using the charging terminal when the amount of electricity stored in the battery 11 decreases.

[Additional Notes]
As described below, the present embodiment includes the following disclosures.

(Structure 1)
Ultraviolet irradiation device (1)
A light emitting element (10) having a light emitting surface (10b) that emits ultraviolet rays having a wavelength of 150 to 300 nm,
At least one electronic component (11 to 14) for controlling the operation of the light emitting element (10), and
A light guide plate (20) having an end surface (20c) and a light emitting surface (20a) intersecting in the thickness direction, and guiding the ultraviolet rays irradiated to the end surface (20c) to be emitted from the light emitting surface (20a). When,
The light emitting element (10) is embedded so that the electrode (10a) and the light emitting surface (10b) are exposed, and at least one electronic component (11 to 14) is provided so that the electrodes (11a to 14a) are exposed. The base material (30) to be buried and
Wiring formed on the surface of the base material (30) and connecting the electrodes (10a) of the light emitting element (10) and the electrodes (11a to 14a) of the at least one electronic component (11 to 14). (40, 40a, 40b)
The light guide plate (20) is an ultraviolet irradiation device (1) in which the end surface (20c) is supported by the base material (30) so as to be in contact with the light emitting surface (10b).

(Structure 2)
It is an ultraviolet irradiation device (2, 3)
A light emitting element (10) having a light emitting surface (10b) that emits ultraviolet rays having a wavelength of 150 to 300 nm,
At least one electronic component (11 to 14) for controlling the operation of the light emitting element (10), and
A light guide plate (25) in which the light emitting element (10) and at least one electronic component (11 to 14) are embedded so that the electrodes (10a to 14a) are exposed.
Wiring formed on the surface of the light guide plate (25) and connecting the electrodes (10a) of the light emitting element (10) and the electrodes (11a to 14a) of the at least one electronic component (11 to 14). With (40)
The light emitting surface (10b) is located in the light guide plate (25).
The light guide plate (25) is an ultraviolet irradiation device (2, 3) that guides the ultraviolet rays emitted from the light emitting surface (10b) and emits them from a light emitting surface (25a) intersecting in the thickness direction.

(Structure 3)
The material of the light guide plate (20, 25) is any one of a polymer of an acrylic acid ester, a polymer of a methacrylic acid ester, and a copolymer of tetrafluoroethylene and perfluoroalkoxyethylene. Alternatively, the ultraviolet irradiation device according to 2.

(Structure 4)
The ultraviolet irradiation device according to configuration 1, wherein the material of the light guide plate (20) is quartz glass.

(Structure 5)
The ultraviolet irradiation device (1 to 3) has a shape extended in the longitudinal direction.
At least a part (40a, 40b) of the wiring intersects a virtual plane (45) including at least a part of the light emitting surface (10b), and the virtual plane (45) is orthogonal to the longitudinal direction. The ultraviolet irradiation device according to any one of 1 to 4.

(Structure 6)
The ultraviolet irradiation device according to any one of configurations 1 to 5, wherein the at least one electronic component (11 to 14) controls the light emitting element so as to emit light intermittently.

(Structure 7)
The ultraviolet irradiation device according to configuration 1, wherein the base material (30) has a thermal conductivity of 1 W / mK or more.

(Structure 8)
The light guide plate (25) has a shape extended in the longitudinal direction.
The at least one electronic component (11 to 14) is embedded in the light guide plate (25) on one end (25c) side in the longitudinal direction.
The light emitting element (10) is embedded in the light guide plate (25) on the other end (25d) side in the longitudinal direction.
The ultraviolet irradiation device according to configuration 2, wherein the light emitting surface (10b) faces the light emitting surface (25a).

(Structure 9)
A method of using the ultraviolet irradiation device (1 to 3) according to any one of configurations 1 to 8.
The ultraviolet irradiation device (1 to) so that the light emitting surfaces (20a, 25a) are immersed in the beverage from the insertion port (21,232) formed in the beverage container (200) containing the beverage. 3) Inserting step and
A method of using an ultraviolet irradiation device, comprising a step of energizing the light emitting element (10) and emitting the ultraviolet rays from the light emitting surface to the beverage.

(Structure 10)
The at least one electronic component includes a switch (12).
The switch (12) has an operation unit (12b) that receives an operation from the outside, and switches whether or not to supply electric power to the light emitting element (10) in response to an operation on the operation unit (12b). ,
The step of inserting the ultraviolet irradiation device is
The method of using the ultraviolet irradiation device according to the configuration 9, which includes a step of starting the supply of electric power to the light emitting element (10) by bringing the operation unit (12b) into contact with the beverage container (200). ..

(Structure 11)
The beverage container (200) includes a container body (220) having an opening (225) formed therein, and a cap (210) capable of opening and closing the opening (225).
The method of using the ultraviolet irradiation device according to the configuration 9 or 10, wherein the insertion port (21,232) is formed in the container body (220) or the cap (210).

The embodiments disclosed this time should be considered to be exemplary in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1-3 UV irradiation device, 1a, 25c one end, 1b, 25d other end, 10 light emitting element, 10a to 14a electrodes, 10b light emitting surface, 11 batteries, 12 switches, 12b buttons, 13 IC chips, 14 chip parts, 20 , 25 light guide plate, 20a light emitting surface, 20b, 25b, 30b back surface, 20c end surface, 21 optical path changing part, 25a, 30a front surface, 25e region, 30 base material, 30c recess, 40, 40a, 40b wiring, 45 virtual plane , 50 protective film, 60 light emitting direction, 70 ultraviolet rays, 80 temporary fixing sheet, 90 molding mold, 91 upper mold, 92 lower mold, 93 space, 94, 233 convex part, 100 electronic circuit, 101 power supply, 102 circuit connection part, 103 timer, 104 lighting control unit, 105 LED, 200 beverage container, 210 cap, 211,232 insertion port, 220 container body, 225 opening, 230 mounting part, 231 lower wall, L beverage.

Claims (11)

It is an ultraviolet irradiation device
A light emitting element having a light emitting surface that emits ultraviolet rays having a wavelength of 150 to 300 nm,
At least one electronic component for controlling the operation of the light emitting element, and
A light guide plate having a light emitting surface intersecting with an end surface in the thickness direction and guiding the ultraviolet rays applied to the end surface to emit light from the light emitting surface.
A base material in which the light emitting element is embedded so that the electrode and the light emitting surface are exposed, and the at least one electronic component is embedded so that the electrode is exposed.
A wiring formed on the surface of the base material and connecting the electrode of the light emitting element and the electrode of at least one electronic component is provided.
The light guide plate is an ultraviolet irradiation device supported by the base material so that the end surface is in contact with the light emitting surface. It is an ultraviolet irradiation device
A light emitting element having a light emitting surface that emits ultraviolet rays having a wavelength of 150 to 300 nm,
At least one electronic component for controlling the operation of the light emitting element, and
A light guide plate in which the light emitting element and the at least one electronic component are embedded so that the electrodes are exposed.
A wiring formed on the surface of the light guide plate and connecting the electrode of the light emitting element and the electrode of at least one electronic component is provided.
The light emitting surface is located in the light guide plate and is located in the light guide plate.
The light guide plate is an ultraviolet irradiation device that guides the ultraviolet rays emitted from the light emitting surface and emits them from light emitting surfaces intersecting in the thickness direction. The material of the light guide plate is any one of a polymer of an acrylic acid ester, a polymer of a methacrylic acid ester, and a copolymer of tetrafluoroethylene and perfluoroalkoxyethylene, according to claim 1 or 2. UV irradiation device. The ultraviolet irradiation device according to claim 1, wherein the material of the light guide plate is quartz glass. The ultraviolet irradiation device has a shape extended in the longitudinal direction.
The ultraviolet irradiation according to any one of claims 1 to 4, wherein at least a part of the wiring intersects a virtual plane including at least a part of the light emitting surface, and the virtual plane is orthogonal to the longitudinal direction. apparatus. The ultraviolet irradiation device according to any one of claims 1 to 5, wherein the at least one electronic component controls the light emitting element so as to emit light intermittently. The ultraviolet irradiation device according to claim 1, wherein the base material has a thermal conductivity of 1 W / mK or more. The light guide plate has a shape extending in the longitudinal direction.
The at least one electronic component is embedded in the light guide plate on one end side in the longitudinal direction.
The light emitting element is embedded in the light guide plate on the other end side in the longitudinal direction.
The ultraviolet irradiation device according to claim 2, wherein the light emitting surface faces the light emitting surface. The method of using the ultraviolet irradiation device according to any one of claims 1 to 8.
A step of inserting the ultraviolet irradiation device so that the light emitting surface is immersed in the beverage from an insertion port formed in the beverage container containing the beverage.
A method of using an ultraviolet irradiation device, comprising a step of energizing the light emitting element and emitting the ultraviolet rays from the light emitting surface to the beverage. The at least one electronic component includes a switch.
The switch has an operation unit that accepts an operation from the outside, and switches the presence / absence of power supply to the light emitting element according to the operation to the operation unit.
The step of inserting the ultraviolet irradiation device is
The method for using an ultraviolet irradiation device according to claim 9, further comprising a step of starting the supply of electric power to the light emitting element by bringing the operation unit into contact with the beverage container. The beverage container includes a container body having an opening and a cap capable of opening and closing the opening.
The method of using the ultraviolet irradiation device according to claim 9 or 10, wherein the insertion port is formed in the container body or the cap.

Images