JP6995418B1 - UV sterilizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently sterilize an object to be sterilized even with a relatively low output ultraviolet irradiation function without causing an increase in size of an apparatus and a complicated structure. SOLUTION: The ultraviolet sterilizer 10 has a tubular main body 11 having at least one end opened in the length direction and an opening for receiving a vehicle handrail 12 inside, and an inner wall surface of the main body 11. 11B or a vehicle handrail 12 is provided with an ultraviolet irradiation unit 13 that irradiates ultraviolet rays, and the main body portion 11 has an outer peripheral surface 11A and has a tubular outer peripheral portion formed of a material that transmits ultraviolet rays. It has a tubular inner peripheral portion 112 provided inside the outer peripheral portion 111 in the radial direction of the main body portion 11, and ultraviolet rays irradiating the inner peripheral portion 112 are directed toward the inner wall surface 11B of the outer peripheral portion 111. The ultraviolet irradiation unit 13 is provided in the direction of traveling forward, and the ultraviolet irradiation unit 13 has an irradiation output in which the ultraviolet rays pass through the inside of the outer peripheral portion 111 and reach the outer peripheral surface 11A. [Selection diagram] Fig. 2

Description

The present invention relates to an ultraviolet sterilizer, and more particularly to a technique for disinfecting an object.

There is concern about the existence of viruses and fungi that adversely affect the human body, and contact infection is one of the infection routes of viruses and fungi. Therefore, if the infection by this route can be stopped, the infection can be prevented. It is desirable to take infection prevention measures from this point of view for railroad vehicle railings that are touched by an unspecified number of people.

The following Patent Documents 1 to 3 describe a structure in which an ultraviolet sterilizer for irradiating ultraviolet rays from the surface of the handrail surface of an escalator handrail belt is provided. Patent Document 4 below describes a configuration in which a wiping cloth containing a disinfectant solution is provided at the delivery port of the handrail on the handrail of an escalator and a trabeta (moving walkway), and an ultraviolet sterilizing tube is provided at the same time. ..

Utility Model Registration No. 3262661 Japanese Patent No. 6412231 Japanese Patent Publication No. 2005-523860 Japanese Unexamined Patent Publication No. 11-116173

Ultraviolet rays have the effect of killing bacteria and viruses, but as described in Patent Documents 1 to 4, when the surface of the object to be sterilized (the part touched by human hands) is directly irradiated with ultraviolet rays, the ultraviolet rays are used. The ultraviolet sterilizer must be placed at a position facing the object to be sterilized, which leads to an increase in the size of the device and a complicated structure. For this reason, for example, it is difficult in design to arrange an ultraviolet sterilizer near the surface of a railing of a railroad vehicle and directly irradiate the surface with ultraviolet rays. Further, if the ultraviolet sterilizer is arranged at a position far away from the object to be sterilized, a relatively high-output ultraviolet ray irradiation function is required to secure a sufficient sterilization effect.

The present invention has been made in view of the above circumstances, and it is possible to sufficiently sterilize an object to be sterilized even with a relatively low output ultraviolet irradiation function without inviting an increase in size of the apparatus and complication of the structure. The purpose is to do.

In the ultraviolet sterilizer according to one aspect of the present invention, the outer peripheral surface is a contact surface that a human hand touches, at least one end in the length direction is opened, and an opening for receiving a rod-shaped member is formed inside. A tubular main body portion and an ultraviolet irradiation portion attached to the main body portion and irradiating ultraviolet rays are provided, and the main body portion has a tubular outer peripheral surface formed of a material having the outer peripheral surface and transmitting ultraviolet rays. It has a portion and a tubular inner peripheral portion provided inside the outer peripheral portion in the radial direction of the main body portion, and ultraviolet rays irradiating the inner peripheral portion travel toward the inner wall surface of the outer peripheral portion. The ultraviolet irradiation unit is provided in a facing direction, and the ultraviolet irradiation unit has an irradiation output in which ultraviolet rays pass through the inside of the outer peripheral portion and reach the outer peripheral surface.

According to the present invention, the ultraviolet rays are radiated from the inside of the outer peripheral surface to be sterilized, not from the outside, so that the ultraviolet rays are brought close to the outer peripheral surface inside the main body. It is possible to dispose the irradiation unit. This makes it possible to sufficiently sterilize the part touched by human hands even with a relatively low output ultraviolet irradiation function without causing the device to become large and complicated in structure.

It is a schematic diagram which shows an example of the interior structure of the railroad vehicle equipped with the handrail for a vehicle which has the ultraviolet sterilization apparatus which concerns on 1st Embodiment of this invention. (A) is a transmission perspective view showing an ultraviolet sterilizer and a handrail portion for a vehicle according to the first embodiment, and (B) is a sectional view taken along line BB shown in (A). It is a figure which shows the arrangement example of the ultraviolet irradiation part. (A) is a transmission perspective view showing an ultraviolet sterilizer and a handrail portion for a vehicle according to a second embodiment, and (B) is a sectional view taken along line BB shown in (A). It is a figure which shows the 1st Embodiment of the ultraviolet sterilizing apparatus which has a peculiar structure, (A) shows the 1st embodiment of the ultraviolet sterilizing apparatus which has a peculiar structure, and the cross section in line BB shown in FIG. It is a figure, (B) is a figure which partially showed the cross section in line CC in (A), and is the figure which shows the state which the outer peripheral part changed to colored by the irradiation with ultraviolet rays, (C) is a figure which showed. It is a figure which showed the cross section by the CC line in (A) partially, and is the figure which shows the state of the outer peripheral part which was touched by a human hand and was partially discolored by the heat of the hand. It is a figure which shows the 2nd embodiment of the ultraviolet sterilizing apparatus which has a peculiar structure, (A) shows the 2nd embodiment of the ultraviolet sterilizing apparatus which has a peculiar structure, and the cross section in line BB shown in FIG. It is a figure, (B) is the figure which partially showed the cross section in the DD line in (A), and is the figure which shows the state which the liquid crystal blind device does not transmit ultraviolet rays, (C) is (A). It is a figure which partially showed the cross section in the DD line in), and is the figure which shows the state which the liquid crystal blind device transmits ultraviolet rays. It is a figure which shows the degree of reflection of the ultraviolet ray incident on the outer peripheral surface of the outer peripheral part in the ultraviolet sterilizer which concerns on 3rd Embodiment. (A) is a diagram showing the degree of reflection of ultraviolet rays incident on the outer peripheral surface of the outer peripheral portion of the ultraviolet sterilizer according to the fourth embodiment, and (B) is a diagram showing the degree of reflection of ultraviolet rays incident on the outer peripheral surface of the ultraviolet sterilizer according to the fourth embodiment. It is a figure which shows the degree of reflection of the ultraviolet ray which is incident on the outer peripheral surface of the outer peripheral part when the inner wall is bent. It is sectional drawing in line BB shown in FIG. 2 which shows the 5th Embodiment of the ultraviolet sterilizing apparatus which has a peculiar structure. FIG. 9A is a diagram partially showing a cross section taken along the line EE in FIG. 9A. FIG. 5 is a diagram showing another example of a state in which the main body is viewed from the outside of the side in the fifth embodiment of the ultraviolet sterilizer having a unique configuration. It is a figure which shows the state when a person grasps the outer peripheral part of the main body part from the outer peripheral side, and presses the ultraviolet sterilizer by the side sectional view. It is a figure which shows the state which the main body part was seen from the outside of the side in the 6th Embodiment of the ultraviolet sterilizer. It is a figure which shows the 6th Embodiment of the ultraviolet sterilization apparatus in the side sectional view which the person manually grasped and pressed the outer peripheral part of the main body part from the outer peripheral side. It is a figure which shows the state which the main body part was seen from the outside of the side in the 7th Embodiment which is a further embodiment of the 5th Embodiment of the ultraviolet sterilizer. It is a figure which shows the 7th Embodiment of the ultraviolet sterilization apparatus in the side sectional view which the person grasped and pressed the outer peripheral part of the main body part from the outer peripheral side by hand. It is a figure which shows the state which the main body part was seen from the outside of the side in the 8th Embodiment of the ultraviolet sterilizer. It is a figure which shows the state which the main body part was seen from the outside of the side in the 8th Embodiment of the ultraviolet sterilizer. It is a figure which shows the 8th Embodiment of the ultraviolet sterilization apparatus in the side sectional view which the person has grasped and pressed the outer peripheral part of the main body part from the outer peripheral side by hand.

Hereinafter, the ultraviolet sterilizer according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing an example of an interior structure of a railroad vehicle provided with a handrail for a vehicle, which has the ultraviolet sterilizer according to the first embodiment.

The railcar 1 includes a stool 2, an interior bar 3 extending in the front-rear direction of the railcar 1 above the stool 2, a hanging strap 4 attached to the interior bar 3, and a vehicle extending vertically from the floor surface 5. A handrail 12 and an ultraviolet sterilizer 10 are provided. The ultraviolet sterilizer 10 includes a main body portion 11 having an outer peripheral surface 11A with which a human hand comes into contact. The vehicle handrail 12 is a rod-shaped member (for example, a stainless steel strut) that extends vertically from the floor surface 5 and supports the main body 11. Hereinafter, the vehicle handrail 12 is an example of a rod-shaped member within the scope of the claims.

2 (A) is a transmission perspective view showing an ultraviolet sterilizer 10 and a vehicle handrail 12 portion according to the first embodiment, and FIG. 2 (B) is a line BB shown in FIG. 2 (A). It is a cross-sectional view.

The ultraviolet sterilizer 10 includes a main body portion 11 and an ultraviolet irradiation unit 13 that irradiates ultraviolet rays. The main body 11 has a cylindrical shape in which the outer peripheral surface 11A is a contact surface that a human hand touches, and at least one end in the length direction is open. In the present embodiment, the main body portion 11 has a shape in which both ends in the length direction are open. By opening one end or both ends in the length direction of the main body 11 in this way, the opened portion is used as the opening 11C, and the handrail 12 for a vehicle, which is a rod-shaped member, is inside from the opening 11C. It is accepted. The ultraviolet sterilizer 10 may be attached to the vehicle handrail 12, for example, before the ultraviolet sterilizer 10 is arranged and fixed on the railroad vehicle 1. Make sure to keep it attached. Alternatively, the ultraviolet sterilizer 10 is divided into a plurality of parts by cutting in the length direction so as to form a crescent-shaped side view when viewed from the length direction, and each of the divided parts is arranged in the railroad vehicle 1. The ultraviolet sterilizer 10 may be attached to the vehicle handrail 12 by attaching one to the outer periphery of the vehicle handrail 12 to complete the ultraviolet sterilizer 10.

The main body 11 is made of a member (for example, acrylic, quartz, or fluorite) made of a material that transmits ultraviolet rays. The main body 11 has a cavity extending in the length direction. The main body 11 is arranged so as to wrap the vehicle handrail 12. The main body portion 11 includes an outer peripheral portion 111 and an inner peripheral portion 112. The outer peripheral portion 111 is a tubular member having an outer peripheral surface 11A and formed of a material that transmits ultraviolet rays. The inner peripheral portion 112 is a tubular member provided inside the outer peripheral portion 111 in the radial direction of the main body portion 11. The outer peripheral portion 111 and the inner peripheral portion 112 are formed of the above-mentioned member made of a material that transmits ultraviolet rays.

The ultraviolet irradiation unit 13 is, for example, an ultraviolet LED (Light emitting diode), and as shown in FIG. 3, the ultraviolet irradiation unit 13 is arranged so as to irradiate ultraviolet rays toward one of the length directions D1 of the vehicle handrail 12. It includes one irradiation unit 131 and a second irradiation unit 132 arranged so as to irradiate ultraviolet rays in the opposite direction. Further, as shown in FIGS. 2A and 2B, the first irradiation unit 131 and the second irradiation unit 132 face each other in the irradiation direction in the length direction to generate a pair relationship, and the inner circumference thereof. It is provided inside the portion 112. The ultraviolet irradiation unit 13 has an irradiation output in which ultraviolet rays pass through the inside of the outer peripheral portion 111 and reach the outer peripheral surface 11A of the outer peripheral portion 111. A plurality of spaces for including the pair of the first irradiation unit 131 and the second irradiation unit 132 are provided inside the inner peripheral portion 112, and the pair of the first irradiation unit 131 and the second irradiation unit 132 are each provided. It is stored in the space. That is, the inner peripheral portion 112 functions as an ultraviolet irradiation module.

Further, the ultraviolet irradiation unit 13 is arranged at a plurality of positions in the circumferential direction inside the inner peripheral portion 112, respectively. In the present embodiment, the ultraviolet irradiation unit 13 shows a form in which the ultraviolet irradiation unit 13 is arranged at a plurality of positions in the entire area of the inner peripheral portion 112 in the circumferential direction. That is, the first irradiation unit 131 and the second irradiation unit 132 that generate a paired relationship are arranged over the entire area of the inner peripheral portion 112 in the circumferential direction. In the present embodiment, the first irradiation unit 131 and the second irradiation unit 132 that generate a pair relationship are provided on the inner peripheral portion 112 at a plurality of positions in the length direction of the main body portion 11, respectively. .. The first irradiation unit 131 and the second irradiation unit 132 can secure a long distance for irradiating ultraviolet rays in terms of their performance, and if other conditions described later can be satisfied, a pair of first irradiation units in the length direction thereof. It is also possible to provide only 131 and the second irradiation unit 132. For the ultraviolet irradiation unit 13 (first irradiation unit 131, second irradiation unit 132), a bullet-shaped LED having a hemispherical top can be applied, and further, a cylindrical LED in which ultraviolet rays spread over a wider range than this. Is desirable.

The ultraviolet irradiation unit 13 may be attached to the inner peripheral portion 112 by (1) directly attaching the ultraviolet irradiation unit 13 to a storage portion consisting of a space formed inside the inner peripheral portion 112, or (2) an ultraviolet irradiation unit 13. (The substrate has a shape that follows the shape of the inner peripheral portion 112 in the circumferential direction. The substrate is not shown), and the outer circumference of this substrate is the surface on which the ultraviolet irradiation portion 13 is arranged. It is attached to the storage portion so as to be arranged on the inner peripheral portion 112 so as to face the inner wall surface 11B of the portion 111. Although the electrical wiring from the ultraviolet irradiation unit 13 is not particularly shown, it is assumed that the electrical wiring connected to the ultraviolet irradiation unit 13 is connected to the power supply.

Next, the ultraviolet sterilizer 20 according to the second embodiment will be described. 4 (A) is a transmission perspective view showing the ultraviolet sterilizer 20 and the vehicle handrail 12 portion according to the second embodiment, and FIG. 4 (B) is a line BB shown in FIG. 4 (A). It is a cross-sectional view. In the second embodiment, the description of the same configuration as that of the first embodiment will be omitted.

The ultraviolet sterilizer 20 includes a main body portion 11 and an ultraviolet irradiation unit 23 that surface-irradiates ultraviolet rays. The main body 11 has the same configuration as the ultraviolet sterilizer 10 according to the first embodiment.

The ultraviolet irradiation unit 23 is, for example, a surface irradiation type ultraviolet LED. The ultraviolet irradiation unit 23 is arranged at a plurality of positions in the circumferential direction inside the inner peripheral portion 112 in a direction of irradiating the ultraviolet rays toward the inner wall surface 21B side of the outer peripheral portion 111. In the present embodiment, the ultraviolet irradiation unit 23 shows a form in which the ultraviolet irradiation unit 23 is arranged at a plurality of positions in the entire area of the inner peripheral portion 112 in the circumferential direction. That is, the ultraviolet irradiation unit 23 is arranged over the entire area of the inner peripheral portion 112 in the circumferential direction. In the present embodiment, the ultraviolet irradiation unit 23 is provided on the inner peripheral portion 112 at a plurality of positions also in the length direction of the main body portion 11. The ultraviolet irradiation unit 23 has an irradiation output in which ultraviolet rays pass through the inside of the outer peripheral portion 111 and reach the outer peripheral surface 21A of the outer peripheral portion 111.

The ultraviolet irradiation unit 23 can be attached to the inner peripheral portion 112 by (1) directly attaching the ultraviolet irradiation unit 23 to the storage portion formed inside the inner peripheral portion 112, or (2) attaching the ultraviolet irradiation unit 23 on the substrate. (The substrate has a shape that follows the shape of the inner peripheral portion 112 in the circumferential direction. The substrate is not shown), and the surface on which the ultraviolet irradiation portion 23 is arranged is the outer peripheral portion 111. It is attached to the storage portion so as to be arranged on the inner peripheral portion 112 so as to face the inner wall surface 21B. Although the electrical wiring from the ultraviolet irradiation unit 23 is not particularly shown, it is assumed that the electrical wiring connected to the ultraviolet irradiation unit 23 is connected to the power supply.

According to the second embodiment, the outer peripheral surface 21A of the main body 21 to be sterilized is irradiated with ultraviolet rays not from the outside of the main body 21 but from the inner wall surface 21B. Therefore, the distance between the ultraviolet irradiation unit 23 and the sterilization target is close to only the thickness of the main body portion 21, and the ultraviolet irradiation unit 23 can be arranged at a position closer to the sterilization target. The distance to the irradiation unit 23 can be shortened as compared with the conventional case. Further, since the ultraviolet irradiation unit 23 is arranged inside the main body portion 21, a complicated structure is not required for the arrangement of the ultraviolet irradiation unit 23. As a result, in the ultraviolet sterilizer 20 according to the above-described embodiment, the outer peripheral surface 21A, which is a part touched by human hands, is provided even with a relatively low output ultraviolet irradiation function without causing the device to become large and complicated in structure. , It becomes possible to sufficiently sterilize.

Further, in the first or second embodiment, the main body 11 included in the ultraviolet sterilizer 10 and the main body 21 included in the ultraviolet sterilizer 20 are tubular, and the handrail 12 for a vehicle is cylindrical. However, instead of this, the vehicle handrail 12 may be formed into a prismatic shape, and the main body portion 11 may be similarly made into a prismatic shape so as to match the outer diameter of the vehicle handrail 12.

Next, an embodiment of the ultraviolet sterilizer 100 having a more unique configuration will be described on the premise of the structure shown by the ultraviolet sterilizers 10 and 20 according to the first or second embodiment. FIG. 5 is a diagram showing a first embodiment of an ultraviolet sterilizer 100 having a unique configuration. 5 (A) is a cross-sectional view taken along the line BB shown in FIG. 2, showing a first embodiment of the ultraviolet sterilizer 100 having a unique configuration, and FIG. 5 (B) is a cross-sectional view taken along the line CC in (A). It is a figure which partially showed the cross section in (C), and is the figure which shows the state which the outer peripheral part 111 changed to a color by being irradiated with ultraviolet rays, (C) is the figure which partially showed the cross section in line (C) in (A). It is a figure which showed the state of the outer peripheral part 111 which was touched by a human hand and was partially discolored by the heat of the hand.

The first embodiment of the ultraviolet sterilizer 100 having a unique configuration may have any of the structures of the ultraviolet sterilizers 10 and 20 according to the first or second embodiment, but the ultraviolet rays according to the first embodiment. The case where the structure of the sterilizer 10 is provided will be described as an example.

As shown in FIG. 5A, the first embodiment of the ultraviolet sterilizer 100 having a unique configuration includes the configuration of the ultraviolet sterilizer 10 according to the first embodiment, and further, a photochromic dye is provided on the outer peripheral portion 111. Spiropyran or spiro-based compound (hereinafter, simply referred to as a photochromic dye) Pg is contained. The outer peripheral portion 111 is made of the above-mentioned tubular member made of acrylic, quartz, fluorite or the like, and is filled (coated with the surface) with the photochromic dye Pg. Then, the ultraviolet irradiation unit 13 irradiates the ultraviolet rays to reach the outer peripheral surface 11A from the inner wall surface 11B side of the outer peripheral portion 111 through the inside of the outer peripheral portion 111.

When the outer peripheral portion 111 is irradiated with ultraviolet rays by the ultraviolet irradiation portion 13, the photochromic dye Pg in the outer peripheral portion 111 is colored by isomerization (ring-opening body) of the merocyanine body (here, as shown in FIG. 5B). , Black). Therefore, the entire outer peripheral portion 111 including the outer peripheral surface 11A is sterilized by ultraviolet rays, but the ultraviolet rays transmitted through the outer peripheral portion 111 are blocked by the colored merocyanine body (ring-opening body) and the outer peripheral surface of the outer peripheral portion 111 is blocked. It does not pass outside of 11A and stops at the outer peripheral surface 11A.

Further, when the outer peripheral portion 111, which has been changed to colored by ultraviolet irradiation in this way, is touched by a human hand on the outer peripheral surface 11A and the heat (about 35 to 40 ° C.) of the hand is transferred, the hands come into contact with each other. During the period, as shown in FIG. 5C, the photochromic dye Pg of the portion P1 heated by the touched finger returns to the original merocyanine form (closed ring form) and is decolorized. Therefore, in the portion P1 of the photochromic dye Pg that has returned to the original merocyanine body (closed ring body) in the outer peripheral portion 111, the phenomenon that the ultraviolet rays are blocked by the merocyanine body does not occur, so that the ultraviolet rays irradiated by the ultraviolet irradiation unit 13 do not occur. Is in a state of passing through the inside of the outer peripheral portion 111 and passing outside the outer peripheral surface 11A. Here, since the outer peripheral surface 11A is touched by a human hand, the ultraviolet rays are blocked by the human hand on the outer peripheral surface 11A. Therefore, the ultraviolet rays emitted by the ultraviolet irradiation unit 13 reach the outer peripheral surface 11A and sterilize the outer peripheral portion 111 and the hand portion of the person in contact with the outer peripheral surface, but are not emitted to the periphery of the ultraviolet sterilizer 100. do not have.

As described above, according to the first embodiment of the ultraviolet sterilizer 100 having a unique configuration, the outer peripheral portion 111 and the contact with the outer peripheral portion 111 due to the ultraviolet rays emitted from the ultraviolet irradiation unit 13 without emitting the ultraviolet rays to the periphery of the ultraviolet sterilizer 100. It can effectively sterilize the hands of the person doing it.

Next, a second embodiment of the ultraviolet sterilizer 100 having a more unique configuration will be described on the premise of the structure shown by the ultraviolet sterilizers 10 and 20 according to the first or second embodiment. FIG. 6 is a diagram showing a second embodiment of the ultraviolet sterilizer 100 having a unique configuration. 6 (A) is a cross-sectional view taken along the line BB shown in FIG. 2, showing a second embodiment of the ultraviolet sterilizer 100 having a unique configuration, and FIG. 6 (B) is a line DD in (A). It is a figure which partially showed the cross section in (C), the figure which shows the state which the liquid crystal blind device does not transmit ultraviolet rays, (C) is the figure which partially showed the cross section by DD line in (A). It is a figure which shows the state which the liquid crystal blind device transmits ultraviolet rays.

The ultraviolet sterilizer 100 according to the second embodiment may have any of the structures of the ultraviolet sterilizers 10 and 20 according to the first or second embodiment, but the ultraviolet sterilizer 10 according to the first embodiment. The case of having a structure will be described as an example. However, the structure of the outer peripheral portion 111 is different from the structure of the ultraviolet sterilizers 10 and 20 according to the first or second embodiment.

As shown in FIG. 6A, the ultraviolet sterilizer 100 according to the second embodiment is provided with the configuration of the ultraviolet sterilizer 10 according to the first embodiment, and is further determined in advance on the outer peripheral surface 11A of the outer peripheral portion 111. A capacitance type capacitance sensor Sn is provided in the designated area. The predetermined area is the entire area or a part of the outer peripheral surface 11A defined as the area touched by a human hand. Here, a predetermined area will be described as the entire area. The capacitance sensor Sn used in this embodiment is transparent. Further, the capacitance sensor Sn is a part of the outer peripheral portion 111, and the outer peripheral surface of the capacitance sensor Sn forms the outer peripheral surface 11A of the outer peripheral portion 111.

Further, a liquid crystal blind device 50 is provided on the outer peripheral portion 111 so as to cover the entire area in the circumferential direction thereof. The liquid crystal blind device 50 has, for example, a structure in which a liquid crystal layer is sandwiched between two glass substrates with transparent electrodes. The liquid crystal blind device 50 controls the transmission amount of light by combining the orientation of the liquid crystal molecules in the liquid crystal layer and the polarization directions of the two polarizing plates to switch between transmission and non-transmission of ultraviolet rays.

The outer peripheral portion 111 is provided with the capacitance sensor Sn superimposed on (outside) the liquid crystal blind device 50. The capacitance sensor Sn is an existing capacitance sensor, and when a human hand comes into contact with the outer peripheral surface 11A, the switch for the contacted region portion is turned on, and the human hand touches the outer peripheral surface 11A. When is not in contact, the switch for the non-contact portion is turned off, and an on signal and an off signal indicating switch on / off for each of these regions are output to the liquid crystal blind device 50.

When the liquid crystal blind device 50 receives an on signal from the capacitance sensor Sn, the liquid crystal blind device 50 transmits ultraviolet rays to the region portion targeted by the on signal, and when the off signal is received from the capacitance sensor Sn, the liquid crystal blind device 50 transmits ultraviolet rays. The region portion that is the target of the off signal is operated so as not to transmit ultraviolet rays.

As a result, in the ultraviolet sterilizer 100 according to the second embodiment, the outer peripheral portion 111 is irradiated with ultraviolet rays by the ultraviolet irradiation unit 13, and the human hand does not touch the outer peripheral surface 11A, and the capacitance sensor Sn. When the off signal is output to the liquid crystal blind device 50, as shown in FIG. 6B, the liquid crystal blind device 50 does not transmit ultraviolet rays to the region portion targeted by the off signal.

Further, in the ultraviolet sterilizer 100 according to the second embodiment, in a state where the outer peripheral portion 111 is irradiated with ultraviolet rays by the ultraviolet irradiation unit 13, a human hand touches the outer peripheral surface 11A, and the capacitance sensor Sn is activated. When the on signal is output to the liquid crystal blind device 50, as shown in FIG. 6C, the liquid crystal blind device 50 transmits ultraviolet rays to the region portion targeted by the on signal.

As described above, when the liquid crystal blind device 50 transmits ultraviolet rays only to the region portion targeted by the on-signal, the ultraviolet rays emitted by the ultraviolet irradiation unit 13 from the inner wall surface 11B side of the outer peripheral portion 111 are the outer peripheral surface 11A. Make it pass outside. Here, since the human hand is in contact with the portion of the outer peripheral surface 11A that is the target of the ON signal, the ultraviolet rays are blocked by the human hand outside the outer peripheral surface 11A. Therefore, the ultraviolet rays emitted by the ultraviolet irradiation unit 13 sterilize the outer peripheral portion 111 and its outer peripheral surface 11A (including the capacitance sensor Sn) and the hand portion of the person in contact with the outer peripheral portion 111, but the ultraviolet sterilizer 100 There is no irradiation around the area.

That is, according to the second embodiment of the ultraviolet sterilizer 100 having a unique configuration, the outer peripheral portion 111 and its outer peripheral surface are irradiated by the ultraviolet rays emitted from the ultraviolet irradiation unit 13 without emitting ultraviolet rays to the periphery of the ultraviolet sterilizer 100. It is possible to effectively sterilize 11A (including the capacitance sensor Sn) and the hand portion of a person who is in contact with the 11A.

Next, a third embodiment of the ultraviolet sterilizer 100 having a more unique configuration will be described on the premise of the structure shown by the ultraviolet sterilizer 10 according to the first embodiment. The ultraviolet sterilizer 100 according to the third embodiment has the structure of the ultraviolet sterilizer 10 according to the first embodiment.

In the ultraviolet sterilizer 100 according to the third embodiment, as shown in FIG. 7, the angle θ of the ultraviolet rays transmitted through the inner peripheral portion 112 and the outer peripheral portion 111 and incident on the outer peripheral surface 11A by the irradiation by the ultraviolet irradiation unit 13 is set. The ultraviolet rays incident on the outer peripheral surface 11A are set to have a critical angle θc or more that causes total reflection.

Therefore, according to the ultraviolet sterilizer 100 according to the third embodiment, the outer peripheral surface 11A can be sterilized without passing through the outer peripheral surface 11A and emitting ultraviolet rays to the periphery of the ultraviolet sterilizer 100.

In the ultraviolet sterilizing apparatus 100 according to the third embodiment, the ultraviolet rays emitted from the first irradiation unit 131 and the second irradiation unit 132 of the ultraviolet irradiation unit 13 stabilize the angle θ of the ultraviolet rays incident on the outer peripheral surface 11A. In order to make the critical angle θc or more, a light beam having high parallelism between ultraviolet rays is created by passing through a convex lens, and the ultraviolet irradiation direction from the first irradiation unit 131 and the second irradiation unit 132 is limited to a certain direction. It is desirable to make the incident angle of the ultraviolet rays on the outer peripheral surface 11A by the light rays constant by directing the light rays toward the outer peripheral portion 111. The same applies to the fourth embodiment shown below.

As described above, according to the ultraviolet sterilizers 10, 20, 100, the outer peripheral surface 11A of the main body 11 to be sterilized is irradiated with ultraviolet rays not from the outside of the main body 11 but from the inner wall surface 11B. Ru. Therefore, the distance between the ultraviolet irradiation unit 13 and the sterilization target is close to only the thickness of the main body portion 11, and the ultraviolet irradiation unit 13 can be arranged at a position closer to the sterilization target. The distance to the irradiation unit 13 can be shortened as compared with the conventional case. Further, since the ultraviolet irradiation unit 13 is arranged inside the main body portion 11, a complicated structure is not required for the arrangement of the ultraviolet irradiation unit 13. As a result, in the ultraviolet sterilizers 10, 20, and 100 according to the above-described embodiment, the ultraviolet irradiation function having a relatively low output is a part that can be touched by human hands without causing the device to become large in size and complicated in structure. The outer peripheral surface 11A can be sufficiently sterilized.

Next, a fourth embodiment of the ultraviolet sterilizer 100 having a more unique configuration will be described on the premise of the structure shown in the third embodiment of the ultraviolet sterilizer 100. In the description of the ultraviolet sterilizer 100 according to the fourth embodiment, a structure different from that of the third embodiment of the ultraviolet sterilizer 100 will be described.

In the ultraviolet sterilizer 100 according to the fourth embodiment, the outer peripheral portion 111 is made of a flexible material such as silicone gel or acrylamide gel.

As shown in FIG. 8A, the ultraviolet irradiation unit 13 is provided inside the inner peripheral portion 112, passes through the inner peripheral portion 112, and reaches the outer peripheral surface 11A of the outer peripheral portion 111. Further, the angle θ of the ultraviolet rays incident on the outer peripheral surface 11A of the outer peripheral surface 111 by the irradiation by the ultraviolet irradiation unit 13 is set to be equal to or greater than the critical angle θc at which the ultraviolet rays incident on the outer peripheral surface 11A cause total reflection. Here, it is assumed that ultraviolet rays cause total internal reflection from the "critical angle". That is, in the ultraviolet sterilizer 100 according to the fourth embodiment, the angle θ of the ultraviolet rays incident on the outer peripheral surface 11A of the outer peripheral surface 111 is equal to or more than the critical angle θc at which the ultraviolet rays incident on the outer peripheral surface 11A cause total reflection. The unit 13 is used.

Here, when a person grasps the outer peripheral surface 11A of the outer peripheral portion 111 by hand and a pressure is applied to the outer peripheral surface 11A, the outer peripheral portion 111 has flexibility, so that the outer peripheral surface 11A of the outer peripheral portion 111 is shown in FIG. 8 (B). ), It bends toward the inner peripheral portion 112. At this time, the angle of incidence of the ultraviolet rays on the outer peripheral surface 11A changes from the angle θ before bending to the angle θ1 after bending, and there is a portion where both angles have a relationship of θ> θ1. Therefore, if the angle θ1 after bending is less than the critical angle θc, the ultraviolet rays pass through the outer peripheral surface 11A and head toward the outside of the outer peripheral portion 111. As a result, the ultraviolet rays emitted by the ultraviolet irradiation unit 13 reach the outer peripheral surface 11A and sterilize the outer peripheral portion 111 and the hand portion of the person in contact with the outer peripheral surface 111. However, since the outer peripheral surface 11A of the bent portion is touched by a human hand, the ultraviolet rays are blocked by the human hand on the outer peripheral surface 11A. Therefore, the ultraviolet rays emitted by the ultraviolet irradiation unit 13 reach the outer peripheral surface 11A and sterilize the outer peripheral portion 111 and the hand portion of the person in contact with the outer peripheral surface, but are not emitted to the periphery of the ultraviolet sterilizer 100. Very few.

Therefore, according to the fourth embodiment of the ultraviolet sterilizer 100 having a unique configuration, the ultraviolet irradiating unit 13 comes into contact with the outer peripheral portion 111 without emitting ultraviolet rays to the periphery of the ultraviolet sterilizer 100. It can effectively sterilize the hands of the person who is suffering from UV rays.

Next, the ultraviolet sterilizer 10A, which is the fifth embodiment of the ultraviolet sterilizer 100 and has a more unique configuration, will be described on the premise of the structure shown in the third embodiment of the ultraviolet sterilizer 100. Hereinafter, the difference between the ultraviolet sterilizer 10A and the ultraviolet sterilizer 100 according to the fourth embodiment will be described.

The ultraviolet sterilizer 10A has a different configuration of the main body 11 from the third embodiment of the ultraviolet sterilizer 100. In the ultraviolet sterilizer 10A, the main body 11 is configured such that both ends in the length direction are opened and the handrail 12 for a vehicle, which is a rod-shaped member, can be received from the opened opening to the inside. Similar to the third embodiment of the ultraviolet sterilizer 100, but in the ultraviolet sterilizer 10A, as shown in FIGS. 9A and 9B, the main body portion 11 includes an outer peripheral portion 113, a spacer 114, and an inner peripheral portion 112. It is different from the third embodiment of the ultraviolet sterilizer 100 in that it is composed of. In each embodiment, in order to show the structure of the ultraviolet sterilizer in an easy-to-understand manner in all the figures, the size of each part of the device is illustrated as a size different from the actual size. In particular, in FIGS. 9A and 9B and thereafter, in order to clearly show the structure of the third embodiment of the ultraviolet sterilizer 100, the relative size of each member is shown in a size different from the actual size.

The outer peripheral portion 113 is a tubular member made of a flexible material, for example, PET or the like. The outer peripheral portion 113 preferably has a thickness that can be bent by pressing from the outside, for example, a thickness of 0.1 to 0.6 mm. The outer peripheral portion 113 may be made of a silicone gel, an acrylamide gel, or the like, as long as the strength capable of bending can be secured. In the present embodiment, the thickness of the outer peripheral portion 113 is assumed to be 0.2 mm. As described above, the inner peripheral portion 112 is a tubular member made of a member made of a material that transmits ultraviolet rays (for example, acrylic, quartz, or fluorite).

The outer peripheral portion 113 is attached to the wall surface 112B of the inner peripheral portion 112 via the spacer 114. That is, the outer peripheral portion 113 has a cylindrical shape having a diameter larger than that of the inner peripheral portion 112. The outer peripheral portion 113 is formed by the spacer 114 at a position separated from the wall surface 112B of the inner peripheral portion 112 by a certain distance, and covers the outer side of the inner peripheral portion 112 in a shape along the outer peripheral portion of the inner peripheral portion 112. That is, a spacer 114 is interposed between the inner wall surface 113A of the outer peripheral portion 113 and the wall surface 112B of the inner peripheral portion 112, and the spacer 114 causes the inner wall 113A of the outer peripheral portion 113 and the wall surface 112B of the inner peripheral portion 112 to be interposed. A space S is provided between the two members so that the distance between the two members is a certain distance.

The spacer 114 is formed of a member made of a material that does not transmit ultraviolet rays, for example, a synthetic resin or the like. The spacer 114 may be formed of a material whose side surface portion facing the ultraviolet irradiation portion 13 does not transmit ultraviolet rays. For example, the spacer 114 may be made of acrylic, quartz, fluorite, or the like, and may be provided with a light-shielding layer made of a material that blocks ultraviolet rays on the side surface portion. The height h of the spacer 114 is, for example, the above-mentioned constant distance, and the above-mentioned constant distance is, for example, 0.05 to 0.1 mm, most preferably 0.07 mm. In this embodiment, the constant distance is 0.07 mm. Further, the spacer 114 is, for example, (i) a columnar shape having a length of 1 to 2 mm and a diameter of 1 to 2 mm, or (ii) a length of a columnar shape having a length of 1 to 2 mm and viewed from the radial direction of the outer peripheral portion 111. The diagonal line in cross-sectional view is a square pillar with a diameter of 1 to 2 mm.

Here, the spacer 114 is, for example,
As shown in FIG. 10, the spacer 114 has a ring shape that surrounds the wall surface of the inner peripheral portion 112 on the outer peripheral portion 113 side in the circumferential direction. The spacer 114 has a ring shape having a height h at a certain distance as a width. The spacers 114 are provided at a plurality of positions in the length direction of the main body 11. For example, the rectangular region Sq formed by being sandwiched between two spacers 114 adjacent to each other in the direction is set to a size that at least a region larger than a predetermined area as the area of the abdomen of the thumb of a general person can be accommodated. Rectangle. Thereby, for example, when a person manually grasps and presses the outer peripheral portion 113 of the main body portion 11 from the outer peripheral side, the rectangular region Sq portion of the outer peripheral portion 113 can be bent in the inner peripheral portion 112 direction. .. In this case, the rectangular region Sq preferably has, for example, a width of the main body 11 in the length direction of 3 cm, and the length in the direction orthogonal to the length direction is the diameter of the ring-shaped spacer 114. In the first irradiation unit 131 and the second irradiation unit 132 facing each other of the ultraviolet irradiation unit 13, two spacers 114 are always arranged between the first irradiation unit 131 and the second irradiation unit 132 in the length direction. It is provided at.

Further, as shown in FIG. 9B, the inner peripheral portion 112 is provided with an accommodating portion 1121 formed of recesses recessed in the radial direction (thickness direction) of the inner peripheral portion 112. In the side view shown in FIG. 9B, the accommodating portion 1121 exposes a part of the ultraviolet irradiation portion of the ultraviolet irradiation unit 13 to the space S, and further, a part of the accommodating portion 1121 enters the outer peripheral portion 113 in the thickness direction of the outer peripheral portion 113. Then, the ultraviolet irradiation unit 13 is accommodated. This makes it possible for the ultraviolet irradiation unit 13 to irradiate the inside of the outer peripheral portion 113 with ultraviolet rays.

Then, the first irradiation unit 131 and the second irradiation unit 132 of the ultraviolet irradiation unit 13 irradiate the ultraviolet rays traveling in the outer peripheral portion 113 in parallel with the outer peripheral surface 11A of the outer peripheral portion 113 in the side view shown in FIG. 9B. .. The parallel ultraviolet rays may be irradiated by the function of the ultraviolet irradiation unit 13, or the ultraviolet rays may be irradiated in the parallel direction by using the convex lens 116. In this embodiment, an example using the convex lens 116 will be described. That is, in the fifth embodiment of the ultraviolet sterilizer 100, the ultraviolet irradiation unit 13 capable of irradiating the ultraviolet rays in the parallel direction in this way is used.

In the present embodiment, the main body 11 is provided with a convex lens 116. The convex lens 116 is provided in front of the first irradiation unit 131 and the second irradiation unit 132 in which the first irradiation unit 131 and the second irradiation unit 132 of the ultraviolet irradiation unit 13 are in the direction of irradiating the ultraviolet rays. The ultraviolet rays emitted from the first irradiation unit 131 and the second irradiation unit 132 pass through the convex lens 116 to create a light ray parallel to the outer peripheral surface 11A of the outer peripheral portion 113 in the side view shown in FIG. 9B. The ultraviolet irradiation direction from the first irradiation unit 131 and the second irradiation unit 132 is limited to a fixed direction which is the length direction of the main body portion 11. As a result, as shown in FIG. 9B, the ultraviolet rays emitted from the first irradiation unit 131 and the second irradiation unit 132 of the ultraviolet irradiation unit 13 are applied to the outer peripheral surface 11A and the inner wall 113A of the outer peripheral portion 113 in the above-mentioned length direction. On the other hand, it advances in the outer peripheral portion 113 in parallel.

Subsequently, in the ultraviolet sterilizer 10A according to the fifth embodiment, a state when a person manually grasps and presses the outer peripheral portion 113 of the main body portion 11 from the outer peripheral side will be described. FIG. 11 is a side sectional view showing a state in which a person manually grasps and presses the outer peripheral portion 113 of the main body portion 11 from the outer peripheral side of the ultraviolet sterilizer 10A.

When the ultraviolet sterilizer 10A is not manually pressed by a person on the outer peripheral portion 113 of the main body portion 11 from the outer peripheral side, that is, when the outer peripheral portion 113 is not bent in the inner peripheral portion 112 direction, the ultraviolet irradiation unit 13 is the first. As shown in FIG. 9B, the ultraviolet rays emitted from the first irradiation unit 131 and the second irradiation unit 132 travel in the outer peripheral portion 113 in parallel with the outer peripheral portion 113 and the inner peripheral portion 112, so that the outer peripheral portion 113 is outer peripheral. When the surface 11A is in a flat state, it does not enter the outer peripheral surface 11A.

On the other hand, when the ultraviolet sterilizer 10A is pressed by a person by manually grasping the outer peripheral portion 113 of the main body portion 11 from the outer peripheral side, for example, the outer peripheral portion 113 is pressed by the finger portion of the hand. At this time, as shown in FIG. 11, the rectangular region Sq portion of the outer peripheral portion 113 bends and dents in the inner peripheral portion 112 direction. Further, due to the spacer 114, the space S between the inner wall 113A of the outer peripheral portion 113 and the wall surface 112B of the inner peripheral portion 112 is the above-mentioned constant distance which is the height h of the spacer 114. The amount of deflection d of is within the above-mentioned constant distance. The above constant distance is 0.07 mm as described above, but this numerical value is a general value of the distance obtained by adding the thickness of the stratum corneum to the groove depth of the fingerprint on the finger of a human hand, which is about 0.07 mm. It corresponds to that.

Therefore, the ultraviolet rays emitted from the ultraviolet irradiation unit 13 traveling parallel to the outer peripheral surface 11A of the outer peripheral portion 113 inside the outer peripheral portion 113 are incident on the outer peripheral portion 113 unless the outer peripheral portion 113 is bent. However, as shown in FIG. 11, the bending portion 113C of the rectangular region Sq portion formed by the above pressing is reached. At this time, the ultraviolet rays that have reached the flexible portion 113C are incident on the surface forming the flexible portion 113C at an angle smaller than the critical angle θc, and the ultraviolet rays are transmitted through the outer peripheral surface 11A forming the flexible portion 113C to the outer peripheral portion 113. It faces outward and reaches the finger pressing the outer peripheral portion 113. Therefore, the ultraviolet rays emitted by the ultraviolet irradiation unit 13 sterilize the outer peripheral surface 11A and the hand portion of the person in contact with the outer peripheral surface 11A. However, since the outer peripheral surface 11A of the flexible portion 113C is touched by a human hand, the ultraviolet rays transmitted through the outer peripheral surface 11A are blocked by the human hand on the outer peripheral surface 11A. Therefore, the ultraviolet rays transmitted through the outer peripheral surface 11A are rarely emitted to the periphery of the ultraviolet sterilizer 100.

When the ultraviolet rays that have reached the bending portion 113C are incident on the outer peripheral surface 11A of the outer peripheral portion 113 forming the bending portion 113C at an angle of a critical angle θc or more, they are totally reflected by the outer peripheral surface 11A of the bending portion 113C. Since the human finger touches the outer peripheral surface 11A portion where the ultraviolet rays are incident and the optical refractive index of the outer peripheral portion 113 and the human finger are close to each other, an evanescent field does not occur. Even if there is an outer peripheral surface 11A portion that is not touched by a human finger in the region of the flexible portion 113C where ultraviolet rays are totally reflected, and an evanescent field is generated in that portion, the generated evanescent field has a thickness of 100 to 150 nm or less. be. Then, on the relevant part, sebum stains from human fingers (sebum film, peeled stratum corneum, sweat, salt and urea remaining after the sweat has dried, etc.), and dust, dust, or makeup residue from the surrounding area. Etc. are attached, and these are much thicker than the thickness of the evanescent field. Therefore, it is impossible to sterilize in the evanescent field by the outer peripheral surface 11A in a state where sebum stains and the like are attached. Therefore, in the ultraviolet sterilizer 10A, the sterilization of the contact surface 11A and the hand portion of the person in contact with the contact surface 11A is performed not by the evanescent field but by the ultraviolet rays transmitted through the contact surface 11A.

As described above, according to the ultraviolet sterilizer 10A having a unique configuration, the ultraviolet rays emitted from the ultraviolet irradiation unit 13 come into contact with the outer peripheral surface 11A of the outer peripheral portion 113 touched by human hands, and further to the outer peripheral surface 11A. It can effectively sterilize the hand part of the person who is suffering from it. Here, when UVC254 nm is used as ultraviolet rays, the ultraviolet rays are transmitted to a depth of 0.06 to 0.1 mm from the surface of the human hand. Here, in the ultraviolet sterilizer 10A, since the height h of the spacer 114 and the above constant distance are 0.07 mm, the hand portion (fingers, etc.) of the person who enters the flexible portion 113C from the outside is up to 0.07 mm from the surface of the hand. It becomes a part of. Therefore, the ultraviolet rays that pass through the contact surface 11A of the flexible portion 113C and go outward to the outer peripheral portion 113 are considered to have a thickness of about 0.2 mm from the surface of the epidermis of the fingers of a human hand (generally, the epidermis of the skin is about 0.2 mm thick from the surface). The thickness of the fingerprint groove (generally about 0.05 mm) and the stratum corneum (thickness of about 0.02 mm from the surface of the skin), that is, the thickness of the stratum corneum from the surface in the deepest part of the fingerprint groove. It irradiates only the part up to the degree (0.05 + 0.02 = 0.07mm), and does not penetrate deeply from the surface of the human hand to the inside.

In this way, the ultraviolet rays transmitted through the outer peripheral surface 11A irradiate the stratum corneum in the epidermis of the human hand, but reach only from the surface of the skin to the stratum corneum, so that the surface of the human hand can be sterilized safely and reliably. .. The ultraviolet rays emitted from the ultraviolet irradiation unit 13 and traveling in the space S in parallel with the outer peripheral surface 11A of the outer peripheral portion 113 are refracted toward the inner peripheral portion 112 when they pass through the contact surface 11A of the flexible portion 113C. Therefore, it stays inside the hollow of the bent outer peripheral surface 11A and irradiates the surface (corner layer) of the human hand only in the hollow. Since the ultraviolet rays are blocked by human hands in the hollow, the emission of ultraviolet rays to the periphery of the ultraviolet sterilizer 10A is extremely small.

Further, as the sixth embodiment, in addition to the configuration of the fifth embodiment, the outer peripheral portion 113 of the ultraviolet sterilizer 10A may be filled (coated with the surface) with the above-mentioned photochromic dye Pg. FIG. 12 is a diagram showing a sixth embodiment of the ultraviolet sterilizer 10A. In the sixth embodiment, as shown in FIG. 12, the peripheral surface of the outer peripheral surface 11A of the outer peripheral surface 113 is coated with the substance M made of the photochromic dye Pg spiropyran or spirooxazine, and the peripheral surface of the outer peripheral surface 11A is the peripheral surface. Covered by substance M.

In the sixth embodiment, as shown in FIG. 13, when a person grasps and presses the outer peripheral portion 113 from the outer peripheral side by hand, the outer peripheral surface 11A is pressed by the finger portion of the hand, and the rectangular region Sq of the outer peripheral portion 113 is pressed. The portion bends and dents in the direction of the inner peripheral portion 112, but at this time, the photochromic dye Pg in the portion P1 heated by the touched finger returns to the original merocyanine body (closed ring body) and is decolorized. Therefore, when the ultraviolet rays traveling in the length direction of the main body portion 11 are irradiated into the outer peripheral portion 113 in parallel, the ultraviolet rays pass through the flexible portion of the outer peripheral portion 113 and reach the fingers of the person's hand. On the other hand, even in the bent portion, the photochromic dye Pg in the portion P2 not heated by the touched finger remains colored, so that the ultraviolet rays are emitted to the outside of the outer peripheral surface 11A (substance M) of the outer peripheral portion 113. The evanescent field does not occur because the ultraviolet rays do not reach the region that does not pass and is not touched by the human finger in the flexible portion.

Therefore, in the sixth embodiment, when a person manually grasps and presses the outer peripheral portion 113 of the main body portion 11 from the outer peripheral side and the outer peripheral portion 113 bends toward the inner peripheral portion 112 as described above, the bending occurs. Even if there is a region not touched by human hands in the portion 113C, since the region is not touched by human hands, the photochromic dye Pg is isomerized (ring-opened) of the merocyanin form. Since the color has changed to colored (black in this case), the ultraviolet rays are blocked by the colored merosinin body (ring-opened body) and do not reach the outer side of the outer peripheral surface 11A of the outer peripheral portion 113, and the outer peripheral surface 11A (the outer peripheral surface 11A). It stops at substance M). Therefore, even in the region where no human hand is present, the ultraviolet rays do not pass through the hands and are not emitted to the periphery of the ultraviolet sterilizer 10A. This makes it possible to more reliably prevent the situation where ultraviolet rays are emitted around the ultraviolet sterilizer 10A. Further, in the sixth embodiment, the ultraviolet rays are not prevented from being emitted to the outside due to the total reflection of the ultraviolet rays on the outer peripheral surface 11A, but the ultraviolet rays are not allowed to reach the outer peripheral surface 11A by coloring the photochromic dye Pg. Since the structure is designed to prevent ultraviolet rays from being emitted to the outside, even if water droplets or foreign matter adhere to the outer peripheral surface 11A, the ultraviolet rays are not totally reflected and are emitted to the periphery of the ultraviolet sterilizer 10A. Does not occur.

Subsequently, a seventh embodiment, which is a further embodiment of the fifth embodiment of the ultraviolet sterilizer 10A, will be described. FIG. 14 is a diagram showing a state in which the main body 11 is viewed from the outside of the side in the seventh embodiment of the ultraviolet sterilizer 10A. In the further embodiment, similarly to the fifth embodiment of the ultraviolet sterilizer 10A, the ultraviolet irradiation unit 13 is arranged on the inner peripheral portion 112 with a part of the outer peripheral portion 113 in the thickness direction of the outer peripheral portion 113. Will be done. Further, in the further embodiment, the light-shielding wall 51 is provided on the cross section of the outer peripheral portion 113 facing the ultraviolet irradiation portion 13. As shown in FIG. 14, the light-shielding wall 51 is a cross-sectional region of the outer peripheral portion 113 facing the ultraviolet irradiation portion 13, and the outer peripheral surface 11A of the outer peripheral portion 113 in the thickness direction of the outer peripheral portion 113 is on the inner peripheral portion 112 side. It is provided in a region other than the bending portion 113C (FIG. 15) and a region in which the bending portion 113C is inserted into the bending portion 113C up to half of the maximum bending amount in the thickness direction. The light-shielding wall 51 is made of a material (for example, synthetic resin) capable of blocking the ultraviolet rays emitted from the ultraviolet irradiation unit 13.

Further, also in the seventh embodiment, the spacer 114 has the same configuration as that of the fifth embodiment, and is made of a material (for example, synthetic resin) that does not transmit ultraviolet rays. The first irradiation unit 131 and the second irradiation unit 132 facing each other of the ultraviolet irradiation unit 13 are provided in a state where two spacers 114 are always arranged between the first irradiation unit 131 and the second irradiation unit 132 in the length direction. Be done.

The ultraviolet irradiation unit 13 irradiates the outer peripheral portion 113 with ultraviolet rays traveling in parallel in the length direction of the main body portion 11 through the region where the light-shielding wall 51 is not provided, so that the outer peripheral surface 11A of the outer peripheral portion 113 is inside. Ultraviolet rays are applied only to a part of the portion that bends toward the peripheral portion 112 in the thickness direction.

As a result, as shown in FIG. 15, ultraviolet rays can be irradiated only to a very shallow portion from the surface of the human hand touching the outer peripheral surface 11A of the flexible portion 113C, so that the surface of the human hand can be sterilized more safely. can do.

Further, an eighth embodiment as a further embodiment of the seventh embodiment of the ultraviolet sterilizer 10A will be described. FIG. 16 is a diagram showing a state in which the main body 11 is viewed from the outside of the side in a further embodiment of the seventh embodiment of the ultraviolet sterilizer 10A.

In the eighth embodiment, between the inner wall 113A of the outer peripheral portion 113 and the wall surface 112B of the inner peripheral portion 112, which are in front of the first irradiation unit 131 and the second irradiation unit 132 of the ultraviolet irradiation unit 13 in the ultraviolet irradiation direction. In the space S provided in the above space S, a light-shielding plate 60 for blocking ultraviolet rays emitted from the ultraviolet irradiation unit 13 is provided in close contact with the first irradiation unit 131 and the second irradiation unit 132, respectively. That is, the light-shielding plate 60 is provided in a portion where the first irradiation unit 131 and the second irradiation unit 132 emit ultraviolet rays toward the space S, and is directed toward the space S by the first irradiation unit 131 and the second irradiation unit 132. It functions to block the emission of ultraviolet rays.

Further, in the eighth embodiment, the configuration and arrangement of the spacer 114 are different from those in the seventh embodiment. In the eighth embodiment, the plurality of spacers 114 may be either a material that transmits ultraviolet rays or a material that does not transmit ultraviolet rays. As shown in FIG. 17, a plurality of the plurality of spacers 114 are provided on the wall surface 112B of the inner peripheral portion 112 at regular intervals (for example, 3 cm) when the main body portion 11 is viewed from the outside of the side. .. For example, the rectangular region Sq1 formed by the four spacers 114 is sized to accommodate at least a region larger than a predetermined area as the area of the abdomen of the thumb of a general person. Preferably, the rectangular area Sq1 is 9 cm ² having a side of 3 cm × 3 cm. Thereby, for example, when a person manually grasps and presses the outer peripheral portion 113 of the main body portion 11 from the outer peripheral side, the rectangular region Sq1 portion of the outer peripheral portion 113 can be bent in the inner peripheral portion 112 direction. ..

As a result, in the eighth embodiment, as shown in FIG. 18 , even if the spacer 114 is a material that transmits ultraviolet rays, a portion very shallow from the surface of the human hand touching the outer peripheral surface 11A of the flexible portion 113C. Ultraviolet rays can be irradiated only to the surface of the human hand, and the surface of the human hand can be sterilized more safely.

Next, the ultraviolet rays emitted by the ultraviolet irradiation units 13 and 23 will be described. Ultraviolet rays are classified into three types, UV-A (ultraviolet A wave), UV-B (ultraviolet B wave), and UV-C (ultraviolet C wave), depending on the length of the wavelength. Ultraviolet rays (UV-C) having a wavelength of 222 nm, which has a high sterilizing power, cause the least harm to humans.

In addition, when irradiated with ultraviolet rays (wavelength 222 nm or 254 nm) with an irradiation distance of 100 mm and an illuminance of 1 mW / cm ² , it takes time to reach the ultraviolet irradiation amount (3.5 mJ / cm ² ) required for virus inactivation (3.5 mJ / cm 2). The time required to inactivate the virus) was 6 seconds, according to the research results.

The time to reach the required irradiation amount (required irradiation amount) for inactivating the virus is inversely proportional to the illuminance of the ultraviolet rays, so if the illuminance is large, the time to reach the required irradiation amount will be shorter, and conversely, the illuminance will be higher. The smaller it is, the longer it takes to reach the required dose.

For example, when an attempt is made to sterilize an object to be sterilized using an ultraviolet irradiation unit whose specifications are an irradiation distance of 20 mm and an illuminance of 7 mW / cm ² , this illuminance is 7 times that of the above research result (1 mW / cm ² ). Therefore, when the distance to the sterilization target is 20 mm, which is the same as the specification, the ultraviolet irradiation amount reaches the required irradiation amount in 0.86 seconds (≈6 seconds × 1/7).

In each of the above embodiments, by the time the sterilized object is irradiated with ultraviolet rays, for example, the main body 11 made of acrylic (transmittance 10%) is transmitted, so that the illuminance of the ultraviolet rays is attenuated and the ultraviolet rays are present. When an attempt is made to sterilize an object to be sterilized 20 mm away by using an irradiation unit, the illuminance is attenuated to 0.7 mW / cm ² (≈7 × 10%).

From the above research results, it is known that the time required for virus inactivation with ultraviolet rays having an illuminance of 1 mW / cm ² is 6 seconds. In addition, the time to reach the required irradiation amount is inversely proportional to the illuminance, so when the illuminance is 0.7 mW / cm ² , the time required to inactivate the virus is 8.57 seconds (≈6 seconds / 0.7). Become. That is, when an attempt is made to sterilize an object to be sterilized 20 mm away by using the ultraviolet irradiation units 13 and 23, the time required for virus inactivation is about 8.57 seconds.

Therefore, in the present embodiment, when the main body 11 is made of acrylic, as an example, the ultraviolet irradiation units 13 and 23 having a wavelength of 222 nm or 254 nm, an irradiation distance of 20 mm, and an illuminance of 7 mW / cm ² are used. ..

When an attempt is made to sterilize an object to be sterilized 30 mm away by using ultraviolet irradiation units 13 and 23 having a wavelength of 222 nm or 254 nm, an irradiation distance of 20 mm, and an illuminance of 7 mW / cm ² , the light attenuation is reduced. According to the law, the illuminance is attenuated from 7 mW / cm ² to 3.11 mW / cm ² (≈7 × (20/30) ² ).

In each of the above embodiments, by the time the sterilized object is irradiated with ultraviolet rays, for example, the main body 11 made of acrylic (transmittance 10%) is transmitted, so that the illuminance of the ultraviolet rays is attenuated and the ultraviolet rays are present. When an attempt is made to sterilize an object to be sterilized at a distance of 30 mm using an irradiation unit, the illuminance is attenuated to 0.31 mW / cm ² (≈3.11 × 10%).

From the above research results, it is known that the time required for virus inactivation with ultraviolet rays having an illuminance of 1 mW / cm ² is 6 seconds. In addition, the time to reach the required irradiation amount is inversely proportional to the illuminance, so when the illuminance is 0.31 mW / cm ² , the time required to inactivate the virus is 19.35 seconds (≈6 seconds / 0.31). Become. That is, when an attempt is made to sterilize an object to be sterilized 30 mm away by using the ultraviolet irradiation unit 13, the time required for virus inactivation is about 19 seconds.

Further, in the above-described embodiment, the configuration and processing shown by the above-described embodiment with reference to FIGS. 1 to 18 are merely one embodiment of the present invention, and the present invention is not intended to be limited to the configuration and processing.

1 Railroad vehicle 10,100,10A UV sterilizer 111 Outer circumference 11 Main body 11A Outer surface 11B Inner wall surface 11C Opening 112 Inner circumference 12 Vehicle railing 13 UV irradiation unit 131 First irradiation unit 132 Second irradiation unit 20 UV sterilizer 21 Main body 21A Outer surface 21B Inner wall 23 UV irradiation part 50 Liquid crystal blind device 51 Light-shielding wall 60 Light-shielding plate Pg Photochromic dye Sn Electrostatic capacity sensor 113 Outer circumference 113C Flexion part 114 Spacer 116 Convex lens M Material S Space

Claims (2)

The outer peripheral surface is a contact surface that can be touched by human hands, and at least one end in the length direction is opened to form an opening for receiving a rod-shaped member inside, and a cylindrical main body portion.
It is equipped with an ultraviolet irradiation unit that is attached to the main body and irradiates ultraviolet rays.
The main body portion has a tubular outer peripheral portion formed of a material having the outer peripheral surface and transmitting ultraviolet rays, and a tubular inner peripheral portion provided inside the outer peripheral portion in the radial direction of the main body portion. And have
The ultraviolet irradiation portion is provided on the inner peripheral portion so that the ultraviolet rays to be irradiated travel toward the inner wall surface of the outer peripheral portion.
The ultraviolet irradiation unit has an irradiation output in which ultraviolet rays pass through the inside of the outer peripheral portion and reach the outer peripheral surface .
The outer peripheral portion is
It contains a substance consisting of the photochromic dye spiropyran or spirooxazine, becomes colored when irradiated with ultraviolet rays by the ultraviolet irradiation unit, and does not allow ultraviolet rays to pass outside the outer peripheral surface.
When a human hand touches the outer peripheral surface, the photochromic dye on the outer peripheral surface portion heated by the heat of the hand is decolorized, and the ultraviolet rays irradiated by the ultraviolet irradiation portion are transmitted through the outer peripheral portion. An ultraviolet sterilizer that passes through the outer peripheral surface . The outer peripheral surface is a contact surface that can be touched by human hands, and at least one end in the length direction is opened to form an opening for receiving a rod-shaped member inside, and a cylindrical main body portion.
It is equipped with an ultraviolet irradiation unit that is attached to the main body and irradiates ultraviolet rays.
The main body portion has a tubular outer peripheral portion formed of a material having the outer peripheral surface and transmitting ultraviolet rays, and a tubular inner peripheral portion provided inside the outer peripheral portion in the radial direction of the main body portion. And have
The ultraviolet irradiation portion is provided on the inner peripheral portion so that the ultraviolet rays to be irradiated travel toward the inner wall surface of the outer peripheral portion.
The ultraviolet irradiation unit has an irradiation output in which ultraviolet rays pass through the inside of the outer peripheral portion and reach the outer peripheral surface.
When a human hand comes into contact with the outer peripheral surface of the outer peripheral portion, the switch for the contacted region portion is turned on, and an on signal indicating that the switch is turned on for this region portion is output. However, when the outer peripheral surface is not in contact with a human hand, the switch is turned off for the portion that is not in contact with the outer peripheral surface, and a capacitance sensor that outputs an off signal indicating the switch off for this region is provided. ,
When the on signal is received from the capacitance sensor, the outer peripheral portion transmits ultraviolet rays to the region portion targeted by the on signal, and the off signal is received from the capacitance sensor. An ultraviolet sterilizing device provided with a liquid crystal blind device that does not transmit ultraviolet rays to the region portion that is the target of the off signal .

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