WO2022131056A1

WO2022131056A1 - Ultraviolet sterilization device

Info

Publication number: WO2022131056A1
Application number: PCT/JP2021/044746
Authority: WO
Inventors: 文男前迫; 岳郎松本; 直也金久保
Original assignee: 株式会社トップ
Priority date: 2020-12-14
Filing date: 2021-12-06
Publication date: 2022-06-23
Also published as: JPWO2022131056A1; TW202228795A

Abstract

Provided is an ultraviolet sterilization device which can be easily used. An ultraviolet sterilization device 1 comprises: a base 10; a cylindrical air introducing member 20 one end of which in the axis direction is attachably/detachably connected to the base 10; an air blower 30 that is disposed on the base 10 and generates an air current inside the air introducing member 20; and a light source 40 that is fixed to the base 10 so as to be disposed inside the air introducing member 20 and emits ultraviolet rays.

Description

UV sterilizer

The present invention relates to an ultraviolet sterilizer that sterilizes by irradiation with ultraviolet rays.

Conventionally, for example, in the medical field, an ultraviolet sterilizer that kills or inactivates harmful bacteria, viruses, etc. by irradiation with ultraviolet rays from an ultraviolet lamp or the like is widely used. Such an ultraviolet sterilizer includes an irradiation sterilization type that directly irradiates indoor walls and equipment with ultraviolet rays (irradiation sterilization) and an air sterilization that irradiates the air circulated in the room with ultraviolet rays (air). There are two types of air sterilization type that perform sterilization).

Of these, the irradiation sterilization type has a risk of exposing the human body to the irradiated ultraviolet rays, so it requires careful handling, such as being limited to indoor use that is off limits. On the other hand, the air sterilization type can be used even in a room with people by shielding a light source such as an ultraviolet lamp, but the sterilization effect is limited to bacteria and viruses floating in the air. It has become.

On the other hand, the present applicant has proposed a combined type ultraviolet sterilizer that can be used as both an irradiation sterilization type and an air sterilization type (see Patent Document 1). According to the combined type ultraviolet sterilizer, irradiation sterilization and air sterilization can be used properly depending on the time and the case, so that sterilization can be performed efficiently.

Japanese Patent No. 4574799

However, the ultraviolet sterilizer described in Patent Document 1 is provided with a light-shielding door that opens and closes, and is provided with a plurality of ultraviolet lamps, so that the apparatus configuration is relatively large and complicated. Therefore, there has been a demand for an ultraviolet sterilizer that has a compact and simple device configuration and can be used more easily.

In view of such circumstances, the present invention is intended to provide an ultraviolet sterilizer that can be easily used.

The ultraviolet sterilizer of the present invention has a base, a cylindrical air guide member whose one end in the axial direction is detachably connected to the base, and an air flow arranged in the base and airflow in the air guide member. It is characterized by comprising a blower to be generated and a light source fixed to the base so as to be arranged in the air guide member and to irradiate ultraviolet rays.

According to the ultraviolet sterilization device of the present invention, it is possible to switch between irradiation sterilization and air sterilization with a simple mechanism of a removable tubular air guide member, so that the device can be compactly and simply configured, and can be carried and handled. It is possible to facilitate the installation and to prevent the installation location from being limited. That is, it is possible to realize an ultraviolet sterilizer that can be used more easily.

Further, it is preferable that the ultraviolet sterilizer of the present invention is provided with a detection switch for detecting the attachment / detachment of the air guide member.

According to this, in switching between irradiation sterilization and air sterilization, it is possible to eliminate the need for operations other than the removal of the air guide member, so that handling can be facilitated. Further, since it is possible to detect the careless removal of the air guide member in air sterilization by utilizing the detection switch and prevent the leakage of ultraviolet rays, it is possible to achieve both convenience and safety.

Further, in the ultraviolet sterilizer of the present invention, it is preferable that the air guide member is connected to the upper part of the base.

According to this, it is possible to reduce the installation space of the device, so that the degree of freedom of the installation location can be further increased. Further, since it is possible to generate an air flow in the vertical direction in air sterilization, it is possible to efficiently circulate the air in the room and efficiently perform air sterilization in spite of its compact and simple structure.

Further, in the ultraviolet sterilizer of the present invention, it is preferable that the blower has a rotating impeller and is arranged in a state where the rotation center of the impeller is aligned with the axis of the air guide member.

According to this, both the fluidity of air in the air guide member and the space efficiency in the device can be improved. That is, air sterilization can be efficiently performed even though the structure is compact and simple.

Further, in the ultraviolet sterilizer of the present invention, the impeller has a hub and a plurality of blades provided on the outer peripheral surface of the hub, and the light source of the impeller is more than the maximum outer diameter portion of the hub. It is preferable that it is arranged so as to be located on the rotation center side.

According to this, it is possible to prevent the flow of air in the air guide member from being obstructed by the light source, so that air sterilization can be performed efficiently.

Further, in the ultraviolet sterilizer of the present invention, it is preferable to provide a wind guide duct provided on the base, communicating with the inside of the air guide member, and opening on the side surface of the base.

According to this, for example, it is possible to efficiently suck air from the side of the device and discharge it upward, so that the air in the room can be efficiently circulated. Further, when the air duct is opened on the bottom surface of the base, a plurality of legs having a certain height are required, whereas by opening the air duct on the side surface of the base, the bottom of the base is opened. Since it is possible to increase the degree of freedom in the configuration of the above, it is possible to improve the stability at the time of installation and to prevent the installation location from being limited.

Further, in the ultraviolet sterilizer of the present invention, it is preferable that the air guide duct is opened on two opposite sides of the base.

According to this, it is possible to suck air more efficiently from the side of the device, so that the air in the room can be circulated efficiently. Further, since the path of the air guide duct can be configured two-dimensionally, the space efficiency in the base can be improved, and the device can be configured more compactly and simply.

Further, in the ultraviolet sterilizer of the present invention, it is preferable to include a louver member which is arranged at the other end in the axial direction of the air guide member and has a plurality of blade plates inclined with respect to the axial center of the air guide member.

According to this, although it has a simple structure, it is possible to prevent the leakage of ultraviolet rays from the air guide member without obstructing the flow of air, so that both convenience and safety can be achieved. .. In addition, since the axial end of the air guide member, which is the air discharge port or suction port, can be placed at a position where it can be seen by people around, the device can be compactly configured and installed at the installation location. Can be prevented from being limited.

Further, in the ultraviolet sterilizer of the present invention, it is preferable that a plurality of the louver members having the same shape are provided, and the louver members are arranged in a posture in which the tilting directions of the louvers are different between the louver members adjacent to each other. ..

According to this, it is possible to more reliably prevent the leakage of ultraviolet rays from the air guide member while suppressing the increase in manufacturing cost, so that both convenience and safety can be achieved.

Further, in the ultraviolet sterilizer of the present invention, it is preferable to have a motion sensor arranged on the base and detecting the presence of surrounding people.

According to this, it is possible to automatically stop the irradiation of ultraviolet rays when there is a person in the vicinity in the irradiation sterilization, so that both convenience and safety can be achieved.

According to the ultraviolet sterilizer of the present invention, it can exert an excellent effect that it can be easily used.

A is a front view of the ultraviolet sterilizer according to the embodiment of the present invention. B is a right side view of the ultraviolet sterilizer. A is a plan view of the ultraviolet sterilizer. B is a bottom view of the ultraviolet sterilizer. A is a sectional view taken along line II of FIG. 2A. B is a sectional view taken along line II-II of FIG. 2A. It is a front view which showed the state which the wind guide member was separated from the base. It is sectional drawing which showed the louver part disassembled.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In each figure, some parts are omitted or simplified.

FIG. 1A is a front view of the ultraviolet sterilizer 1 according to the embodiment of the present invention, and FIG. 1B is a right side view of the ultraviolet sterilizer 1. 2A is a plan view of the ultraviolet sterilizer 1, and FIG. 2B is a bottom view of the ultraviolet sterilizer 1. 3A is a sectional view taken along line I-I of FIG. 2A, and FIG. 3B is a sectional view taken along line II-II of FIG. 2A.

As shown in these figures, the ultraviolet sterilizer 1 includes a quadrangular pyramid-shaped base 10, a cylindrical air guide member 20 detachably connected to the upper part of the base 10, and the inside of the base 10. The blower 30 arranged in the base 10, the ultraviolet lamp 40 fixed to the base 10 so as to be placed in the air guide member 20, the power supply unit 50 placed in the base 10, and the base 10 placed in the base 10. The control unit 60 is provided.

The ultraviolet sterilizer 1 of the present embodiment has an air sterilization mode (air sterilization mode) in which the air introduced into the air guide member 20 by the blower 30 is irradiated with ultraviolet rays from the ultraviolet lamp 40, and the air guide member 20 is mounted from a base. It is configured to be operable in two modes of an irradiation sterilization mode (irradiation sterilization mode) in which ultraviolet rays are directly irradiated from the ultraviolet lamp 40 to the walls and equipment in the room after being removed. In the present embodiment, the air sterilization mode is a mode that operates continuously for a maximum of 8 hours, and the irradiation sterilization mode is a mode that operates for a preset irradiation time (operating time).

The base 10 is a part that accommodates or supports each part of the ultraviolet sterilizer 1. The base 10 is formed into a quadrangular pyramid-shaped box body by combining a plurality of members made of an appropriate resin. An operation switch 11 for the user to operate the ultraviolet sterilizer 1 is provided on the front surface 10a of the base 10.

Further, on the left and right sides of the operation switch 11, a plurality of status indicators 12a to 12c and status indicators 12d to 12g composed of LEDs are provided, respectively. The status display 12a displays that the battery is operating in the air sterilization mode, the status display 12b displays the status of the battery 52, and the status display 12c displays the occurrence of an abnormality. be.

Further, the status display 12d to 12g displays that the operation is in the irradiation sterilization mode for each irradiation time (operating time). Specifically, the status display 12d indicates that it is operating in the irradiation sterilization mode with an irradiation time of 10 minutes, and the status display 12e is operating in the irradiation sterilization mode with an irradiation time of 60 minutes. The status display 12f indicates that it is operating in the irradiation sterilization mode with an irradiation time of 180 minutes, and the status display 12g is operating in the irradiation sterilization mode with an irradiation time of 420 minutes. It indicates that there is something. In the present embodiment, the irradiation time of the irradiation sterilization mode is selected from 10 minutes, 60 minutes, 180 minutes, and 420 minutes.

Further, the front surface 10a and the back surface 10b of the base 10 are provided with an infrared receiving unit 13 for receiving an infrared signal from a remote control device (so-called remote controller) (not shown). The infrared receiving unit 13 has a known configuration and transmits an operation signal based on the received infrared signal to the control unit 60.

A motion sensor (pyroelectric infrared sensor) 14 for detecting the presence of surrounding people is provided on the front surface 10a, the right side surface 10c, and the left side surface 10d of the base 10, respectively. Three motion sensors 14 are evenly arranged around the vertical axis C1 of the base 10 at intervals of 120 ° so as to cover all directions around the base 10. The motion sensor 14 has a known configuration, detects when a person invades within a radius of about 5 m from the axis C1, and transmits a detection signal to the control unit 60.

The upper surface 10e of the base 10 is provided with two detection switches 15 for detecting the attachment / detachment of the air guide member 20. The detection switch 15 has a known configuration, is turned on by being pressed downward by the air guiding member 20 connected to the base 10, and is turned off by being released from the pressing by the air guiding member 20. It is configured to be. When both of the two detection switches 15 are ON, the control unit 60 determines that the air guide member 20 is connected to the base 10. Further, the control unit 60 determines that the air guiding member 20 has fallen off or has been removed from the base 10 when at least one of the two detection switches 15 is OFF.

A protective fence 16 for protecting the ultraviolet lamp 40 is also erected on the upper surface 10e of the base 10. The protective fence 16 is composed of four upright rod-shaped rod-shaped members 16a and a connecting member 16b for connecting each base end portion and each tip end portion of the four rod-shaped members 16a. Both the rod-shaped member 16a and the connecting member 16b are made of an appropriate metal (stainless steel in this embodiment) and are joined by welding.

Inside the base 10, a wind guide duct 17 for introducing air into the wind guide member 20 is provided. The air duct 17 is configured in an inverted T shape. Specifically, the air guide duct 17 has a horizontal portion 17a that opens continuously in the horizontal direction on the right side surface 10c and the left side surface 10d of the base 10 (that is, side surfaces that contradict each other), and above the central portion of the horizontal portion 17a. It is composed of a vertical portion 17b extending toward the surface and a protruding portion 17c extending further upward from the upper end of the vertical portion 17b and projecting from the upper surface 10e of the base 10. The air guide duct 17 communicates with the inside of the air guide member 20 via the protrusion 17c.

The cross-sectional shape of the air guide duct 17 is a horizontally long rectangular shape in the horizontal portion 17a and a square shape in the vertical portion 17b. Further, the cross-sectional shape of the protruding portion 17c is a circular shape having a diameter smaller than the widthwise dimension of the vertical portion 17b.

Inside the base 10, the control unit 60 is arranged on the front side of the air guide duct 17. Further, the power supply unit 50 is arranged on the back side of the air guide duct 17. A DC jack 51 to which an AC adapter (not shown) is connected is provided on the back surface 10b of the base 10. Further, inside the base 10, a battery accommodating unit 18 accommodating the battery 52 is provided adjacent to the power supply unit 50. A lid portion 10f1 that can be attached to and detached from the base 10 is provided on the bottom surface 10f of the base 10, and the battery 52 can be taken in and out by removing the lid portion 10f1.

In the present embodiment, by opening the air guide duct 17 on the right side surface 10c and the left side surface 10d, air is efficiently sucked from the side of the base 10 and discharged upward from the tip of the air guide member 20. It makes it possible to efficiently circulate the air in the room. Further, by configuring the air duct 17 in an inverted T shape having a two-dimensional path, various types including a relatively large battery 52 and the like are placed in front of and behind the air duct 17 (front side and back side). It is possible to arrange parts and improve the space efficiency in the base 10. Further, by opening the horizontal portion 17a at two places, the cross-sectional area of the horizontal portion 17a can be reduced and the base 10 can be made more compact.

Further, for example, when the air guide duct 17 is linearly configured and opened at the bottom surface 10f, it is necessary to provide a plurality of legs for separating the bottom surface 10f from the floor surface, so that the contact area with the floor surface becomes large. It may decrease and the equipment may become unstable and the installation location may be limited. In the present embodiment, the air guide duct 17 is opened on the right side surface 10c and the left side surface 10d so that the bottom surface 10f can be configured in a substantially planar shape, thereby increasing the contact area with the floor surface. Improves stability during installation.

In the air sterilization mode, the air guide member 20 guides the air from the air guide duct 17 upward and covers the ultraviolet lamp 40 to prevent people present in the vicinity from being exposed to ultraviolet rays. Is for. The air guide member 20 includes a cylindrical tubular portion 21, a skirt portion 22 provided on one end side (base 10 side) of the tubular portion 21 in the axial direction, and the other end side (tip) of the tubular portion 21 in the axial direction. It is composed of a louver portion 23 provided on the side).

Further, the air guide member 20 is erected on the upper part of the base 10 in a state where its own axis C2 is substantially aligned with the axis C1 of the base 10. In the present embodiment, by arranging the air guide member 20 in this way, the required installation space is reduced, and the efficient circulation of the indoor air by generating the air flow in the vertical direction is possible.

The tubular portion 21 is made of an appropriate metal (aluminum alloy in this embodiment), and the inner peripheral surface 21a reflects ultraviolet rays from the ultraviolet lamp 40 to prevent bacteria and the like in the air flowing in the air guiding member 20. It is configured to be efficiently killed or inactivated. By forming the tubular portion 21 from an appropriate metal, mirror surface treatment of the inner peripheral surface 21a and the like are omitted, and cost reduction is realized. Further, in the present embodiment, the tubular portion 21 is made of an aluminum alloy to reduce the weight of the air guiding member 20 and facilitate the attachment / detachment to / from the base 10.

The skirt portion 22 is a funnel-shaped member made of an appropriate resin, and the cylindrical tip portion 22a is connected to the tubular portion 21 by being internally placed in the tubular portion 21. Further, the outer peripheral surface 22b of the skirt portion 22 is configured to be smoothly continuous with the surface of the base 10, and the design is improved by enhancing the sense of unity between the base 10 and the air guide member 20. ..

On the inner peripheral surface 22c of the skirt portion 22, an annular contact surface 22d that abuts on the tip surface 17c1 of the protruding portion 17c of the air guide duct 17 and an annular detection protrusion 22e that abuts on the detection switch 15 are provided. It is provided. Further, an annular outer peripheral wall 22f is provided on the outer peripheral side of the detection projection 22e. The outer surface 22f1 of the outer peripheral wall 22f is provided with two engaged projections 22g that engage with the two engaging projections 19 of the base 10.

FIG. 4 is a front view showing a state in which the air guide member 20 is separated from the base 10. The engaging protrusion 19 is formed in a square columnar shape, and is provided on the inner peripheral surface 10e2 of the recessed portion 10e1 having a circular shape in a plan view on the upper surface 10e of the base 10. Further, the engaged protrusions 22g extend from the inner peripheral surface 22c of the skirt portion 22 toward the downward side in the axial direction along the outer peripheral wall 22f, and from the tip end portion of the axial direction portion 22g1 to the outer peripheral wall 22f. It is configured in an L-shape consisting of a circumferential portion 22g2 extending in the circumferential direction clockwise along the plan view. The engaging protrusion 19 and the engaged protrusion 22g are in an engaged state when the circumferential portion 22g2 of the engaged protrusion 22g is arranged below the engaging protrusion 19.

To connect the air guiding member 20 to the base 10, first, the ultraviolet lamp 40 and the protective fence 16 are accommodated inside, and the air guiding member 20 is brought close to the upper surface 10e of the base 10 from above, and the engaging protrusion 19 is formed. The wind guide member 20 is placed on the base 10 in a rotational posture around the axis C2 where the engaged protrusion 22g and the engaged protrusion 22g do not interfere with each other. As a result, the contact surface 22d comes into contact with the tip surface 17c1 of the protrusion 17c, and the air guide duct 17 and the inside of the cylinder 21 communicate with each other. Further, the detection switch 15 is pressed by the detection protrusion 22e to be turned on.

Next, the air guide member 20 is rotated clockwise in a plan view to engage the engaging protrusion 19 with the engaged protrusion 22g. As a result, the wind guide member 20 is connected to the upper surface 10e of the base 10 in a state where it does not easily fall off. Further, the detection switch 15 is maintained in the ON state. The outer peripheral surface 22b of the skirt portion 22 and the upper surface 10e of the base 10 have a rotational posture in which the engaged projection 22g and the engaging projection 19 are in a state immediately before starting engagement, and the engaged projection 22g. Indicators 22h, 10g1 and 10g2 indicating the direction of rotation in which the engagement protrusion 19 is engaged are engraved.

To remove the air guide member 20 from the base 10, the air guide member 20 is rotated counterclockwise in a plan view to disengage the engagement protrusion 19 and the engaged protrusion 22 g, and then the air guide member 20 is removed. Is separated from the base 10.

As described above, in the present embodiment, the air guide member 20 can be attached to and detached from the base 10 very easily. Further, in the present embodiment, since the protective fence 16 is provided to prevent the wind guide member 20 from colliding with the ultraviolet lamp 40 at the time of attachment / detachment, the attachment / detachment of the air guide member 20 becomes easier. ing. Needless to say, the protective fence 16 protects the ultraviolet lamp 40 from any collision even when the wind guide member 20 is separated from the base.

The louver portion 23 prevents the leakage of ultraviolet rays from the air guiding member 20 while allowing air to flow out from the air guiding member 20. FIG. 5 is a cross-sectional view showing the louver portion 23 in an exploded manner. In the present embodiment, the louver portion 23 is configured by arranging and combining three louver members 24 having the same shape in the axial direction.

The louver member 24 is a stepped cylindrical member made of an appropriate resin, and has a small diameter portion 24a having a small inner and outer diameter, a large diameter portion 24b having a larger inner and outer diameter than the small diameter portion 24a, and a smaller diameter portion 24a. It is composed of a plurality of louvers 24c provided so as to span the inside. The outer diameter of the small diameter portion 24a and the inner diameter of the large diameter portion 24b are configured to be aligned with each other, and the small diameter portion 24a of one louver member 24 is inserted into the large diameter portion 24b of the other louver member 24. This makes it possible to connect the two louver members 24. The small diameter portion 24a is also configured to be internally inserted by being inserted into the tubular portion 21.

The blade plate 24c is a plate-shaped member arranged so as to be inclined with respect to the axis C2 of the air guide member 20, and a plurality of (four in this embodiment) are arranged with respect to the axis C2 and the bridging direction. By arranging in the orthogonal direction, it is configured to block ultraviolet rays while allowing the flow of air. In the present embodiment, further, by providing a plate-shaped shielding plate 24d arranged substantially perpendicular to the axis C2 at one side end in the arrangement direction of the feather plates 24c, the fluidity of air and the shielding property of ultraviolet rays are further provided. Is being adjusted.

In the present embodiment, the positioning groove 24e is provided on the outer peripheral surface 24a1 of the small diameter portion 24a, and the positioning protrusion 24f accommodated in the positioning groove 24e is provided on the inner peripheral surface 24b1 of the large diameter portion 24b. The positioning groove 24e and the positioning protrusion 24f are provided at positions opposite to each other with respect to the axis C2. Therefore, when the two louver members 24 are connected, the blade plates 24c of both are oriented in opposite directions.

In the present embodiment, by making the inclination directions of the blades 24c of the louver members 24 connected to each other different in this way, the shielding property of ultraviolet rays is enhanced and the safety is improved. Further, by making the louver members 24 members of the same shape that can be connected to each other, a plurality of rows of blade plates 24c are laminated in the axial direction to further improve the shielding property of ultraviolet rays, while reducing the number of required molds. , It is possible to reduce the manufacturing cost.

Note that the different ways of tilting are not limited to the opposite, and may be different, for example, different by 90 ° around the axis C2 in a plan view. Needless to say, the number of louver members 24 constituting the louver portion 23 is not limited to three.

The blower 30 is for generating an air flow in the air guiding member 20. Specifically, the blower 30 sucks the outside air into the air guide duct 17 and sends it into the air guide member 20 to discharge it from the louver portion 23 to the outside. The blower 30 of the present embodiment is an axial flow fan, and is arranged in the vertical portion 17b of the air guide duct 17 as shown in FIGS. 3A and 3B. The blower 30 is composed of a frame 31 fixed to the air guide duct 17, a motor 32 fixed to the frame 31, and an impeller 33 driven by the motor 32 to rotate. Further, the impeller 33 is composed of a cylindrical or cylindrical hub 33a connected to the motor 32, and a plurality of blades 33b provided on the outer peripheral surface 33a1 of the hub 33a.

In the present embodiment, the blower 30 is arranged in the vertical portion 17b of the air guide duct 17, and the rotation center C3 of the impeller 33 is substantially aligned with the axis C2 of the air guide member 20 to send the blower 30. It is possible to efficiently flow air in the air guide member 20. Further, the blower 30 can be arranged directly under the ultraviolet lamp 40, and the horizontal portion 17a of the air guide duct 17 can be arranged below the blower 30 to improve the space efficiency in the base 10.

The ultraviolet lamp 40 has a known configuration and is a light source that generates ultraviolet rays by discharging in a glass tube 41 filled with mercury vapor. As shown in FIGS. 3A and 3B, a support member 42 is provided directly above the blower 30 in the vertical portion 17b of the air guide duct 17 so as to be bridged in the vertical portion 17b, and the ultraviolet lamp 40 is the ultraviolet lamp 40. It is fixed to the support member 42.

The ultraviolet lamp 40 of the present embodiment includes an elongated cylindrical glass tube 41, and its own axis C4 guides air at a position where its own axis C4 is in the vicinity of the axis C2 of the air guide member 20. It is arranged in a posture substantially parallel to the axis C2 of the member 20. Further, the ultraviolet lamp 40 is arranged so as to be located on the rotation center C3 side of the impeller as a whole with respect to the maximum outer diameter portion of the hub 33a of the impeller 33. That is, the ultraviolet lamp 40 is arranged at a position and posture that does not obstruct the flow of air sent from the blower 30.

Further, the ultraviolet lamp 40 is arranged at a position where the entire range in the axial direction of the glass tube 41 from which the ultraviolet rays are radiated is covered by the inner peripheral surface 21a of the tubular portion 21 that reflects the ultraviolet rays, and is radiated from the glass tube 41. Approximately all of the emitted ultraviolet rays are reflected by the inner peripheral surface 21a of the tubular portion 21.

Thereby, in the present embodiment, the air is smoothly flowed around the ultraviolet lamp 40, and the radiated ultraviolet rays from the glass tube 41 and the reflected ultraviolet rays from the inner peripheral surface 21a of the tubular portion 21 are efficiently flowed to the flowing air. It is possible to irradiate. That is, it is possible to efficiently discharge sterilized air efficiently and circulate it indoors.

The power supply unit 50 has a known configuration and supplies electric power from the DC jack 51 or the battery 52 to each unit. Further, in the present embodiment, a secondary battery is adopted as the battery 52, and the power supply unit 50 charges the battery 52 with the electric power from the DC jack 51.

The control unit 60 has known configurations such as a CPU, ROM, and RAM, and controls each unit of the ultraviolet sterilizer 1 such as a blower 30, an ultraviolet lamp 40, a power supply unit 50, an infrared receiver 13, and a motion sensor 14. It works. The control unit 60 also includes a buzzer 61 that outputs a warning sound, and causes the buzzer 61 to output a warning sound in a predetermined manner when operating in the irradiation sterilization mode.

Next, the operation of the ultraviolet sterilizer 1 will be described.

First, the operation in the air sterilization mode will be explained. When the user operates the ultraviolet sterilizer 1 in the air sterilization mode, the operation switch is connected to the DC jack 51 with the AC adapter connected to the commercial power supply and the air guide member 20 connected to the base 10. Press and hold 11 for about 1 second. As a result, the control unit 60 is activated. In the air sterilization mode, which is premised on continuous operation for a long time, the ultraviolet sterilizer 1 operates only when power is supplied from the DC jack 51.

If the two detection switches 15 are both ON and the power is supplied from the DC jack 51, the control unit 60 rotates the impeller 33 of the blower 30 and turns on the ultraviolet lamp 40. The control unit 60 also turns on the state indicator 12a indicating that it is operating in the air sterilization mode, and measures the operation time. Further, if both of the detection switches 15 are in the ON state, the control unit 60 does not operate the motion sensor 14 or ignores the signal from the motion sensor 14 (disables the motion sensor 14). ..

When the operation switch 11 is briefly pressed, or when one of the two detection switches 15 is turned off (when the air guide member 20 is removed), the control unit 60 is operating in the air sterilization mode. When the power supply from the DC jack 51 is exhausted, or when 8 hours have passed after the start of the operation, the operation of the blower 30 is stopped, the ultraviolet lamp 40 is turned off, and the operation of the ultraviolet sterilizer 1 is stopped. Further, when the ultraviolet lamp 40 is turned off, the control unit 60 cumulatively stores the measured operating time as the lighting time of the ultraviolet lamp 40.

Next, the operation in the irradiation sterilization mode will be described. When operating the ultraviolet sterilizer 1 in the irradiation sterilization mode, the user presses and holds the operation switch 11 for about 1 second with the air guide member 20 removed from the base 10. As a result, the control unit 60 is activated. Since the irradiation sterilization mode is a mode that operates only for the irradiation time set at the beginning, the ultraviolet sterilization device 1 is also operated by supplying power from the battery 52.

If both of the two detection switches 15 are in the OFF state, the control unit 60 puts the ultraviolet sterilizer 1 in the standby state and starts measuring the standby time (1 minute). Further, the control unit 60 sets the irradiation time to 10 minutes and blinks the state display 12d indicating that the irradiation time is 10 minutes.

The user can switch the irradiation time setting by pressing the operation switch 11 during the standby state. When power is supplied from the DC jack 51, the control unit 60 sequentially switches the irradiation time setting from 10 minutes → 60 minutes → 180 minutes → 420 minutes → 10 minutes each time the operation switch 11 is pressed during the standby state. At the same time, the status indicators 12d to 12g that display each irradiation time are sequentially blinked. Further, when the power is supplied from the battery 52, the control unit 60 sequentially switches the irradiation time setting from 10 minutes → 60 minutes → 10 minutes each time the operation switch 11 is pressed during the standby state, and each irradiation time. The

status indicators

12d and 12e are blinked in sequence.

When the standby time has elapsed, the control unit 60 starts detecting surrounding people by the motion sensor 14 and turns on the ultraviolet lamp 40. The control unit 60 also lights a state display 12d to 12g that displays the set irradiation time to indicate that the state is operating in the irradiation sterilization mode, and also displays the irradiation time (operating time). ) Is started. Further, the control unit 60 controls the buzzer 61 while the ultraviolet lamp 40 is lit to output a warning sound periodically (for example, every 3 seconds).

While operating in the irradiation sterilization mode, the control unit 60 turns off the ultraviolet lamp 40 when it receives a human detection signal indicating that the presence of a person has been detected from the motion sensor 14. The control unit 60 turns off the ultraviolet lamp 40 while receiving the human detection signal from the motion sensor 14. After that, the control unit 60 turns on the ultraviolet lamp 40 again if the state of not receiving the human detection signal from the motion sensor 14 continues for 10 seconds.

When the set irradiation time has elapsed, the control unit 60 turns off the ultraviolet lamp 40, cumulatively stores the irradiation time (operating time) as the lighting time of the ultraviolet lamp 40, and then causes the ultraviolet sterilizer 1 to turn off the ultraviolet lamp 40. Stop the operation. In the present embodiment, the irradiation time is continuously measured even while the ultraviolet lamp 40 based on the human detection signal from the motion sensor 14 is turned off, but the irradiation time is measured while the ultraviolet lamp 40 based on the human detection signal is turned off. May be stopped. Further, in the present embodiment, the warning sound output from the buzzer 61 is continued even while the ultraviolet lamp 40 based on the person detection signal is turned off, but the type of the warning sound is different while the ultraviolet lamp 40 based on the person detection signal is turned off. You may let it.

Further, in the control unit 60, when the operation switch 11 is briefly pressed or the two detection switches 15 are both turned on before the set irradiation time elapses (the air guide member 20 is the base). (When placed on 10), the operation of the ultraviolet sterilizer 1 is stopped after memorizing the lighting time of the ultraviolet lamp 40 for the irradiation time up to that point. Normally, in these cases, the ultraviolet lamp 40 is already turned off based on the human detection signal from the motion sensor 14, but when it is lit, the control unit 60 first turns off the ultraviolet lamp 40.

In both the air sterilization mode and the irradiation sterilization mode, the control unit 60 blinks the status indicator 12b in red when the battery 52 is charged by the power supply from the DC jack 51, and the battery 52 is full. When charging, the status indicator 12b is turned on in green. Further, when power is not supplied from the DC jack 51, the control unit 60 determines the status indicator 12b when the voltage of the battery 52 is equal to or higher than a predetermined voltage (in this embodiment, a voltage capable of operating for 10 minutes in the irradiation sterilization mode). Is lit in green, and when the voltage of the battery 52 is less than a predetermined voltage, the status indicator 12b is lit in red.

Further, when the voltage of the battery 52 is less than a predetermined voltage when the power is not supplied from the DC jack 51, the control unit 60 irradiates the irradiation sterilization mode even if the operation switch 11 is pressed after the operation switch 11 is pressed and held. Makes the time unselectable and keeps the standby state.

When the control unit 60 detects an abnormality in each unit during operation, the control unit 60 lights the status display 12b and lights any of the

other status indicators

12a and 12c to 12g depending on the type of abnormality. Let me. That is, the control unit 60 notifies the user of the occurrence of an abnormality in a manner in which the type of abnormality can be discriminated by lighting the status indicators 12a to 12g in a predetermined combination.

Further, when the cumulative lighting time of the ultraviolet lamp 40 exceeds a predetermined useful time (for example, 6000 hours) at the time of activation, the control unit 60 blinks the status display 12b to replace the ultraviolet lamp 40. Notify you of what you need. The control unit 60 also resets the cumulative lighting time of the ultraviolet lamp 40 when the operation switch 11 is pressed and held for about 10 seconds after activation. Therefore, if the ultraviolet lamp 40 is replaced, the user needs to press and hold the operation switch 11 after activation to reset the cumulative lighting time.

Further, in the present embodiment, the same operation as the operation by pressing the operation switch 11 can be performed by a remote control device (not shown). In this case, the control unit 60 executes the above-mentioned various processes based on the operation signal received from the infrared receiver unit 13.

As described above, the ultraviolet sterilizer 1 of the present embodiment realizes switching between the air sterilization mode and the irradiation sterilization mode without requiring a complicated mechanism, so that the entire device is simply and compactly configured, so that it can be carried around. It is easy to handle and can be installed not only on the floor but also on the table, so the installation location is not limited. Furthermore, it automatically operates in the air sterilization mode when the air guide member 20 is connected, and automatically operates in the irradiation sterilization mode when the air guide member 20 is removed, so that it can be used extremely easily. It has become.

Further, the ultraviolet sterilizer 1 detects the removal or dropout of the air guide member 20 in the air sterilization mode by the detection switch 15, and detects the entry of a person into the surroundings in the irradiation sterilization mode by the motion sensor 14, and the ultraviolet lamp 40. Because it turns off the light, it has both convenience and safety. In particular, since the detection switch 15 is also used as a switch for detecting switching between the air sterilization mode and the irradiation sterilization mode, both convenience and safety are achieved at a high level.

Although the embodiment of the present invention has been described above, the ultraviolet sterilizer of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. Of course.

For example, the shape and arrangement of each part of the ultraviolet sterilizer 1 is not limited to the shape and arrangement shown in the above-described embodiment, and various known shapes and arrangements can be adopted. Further, the flow direction of air in the ultraviolet sterilizer 1 may be in the opposite direction.

Further, the horizontal portion 17a of the air guide duct 17 may be provided so as to open on a side surface other than the right side surface 10c and the left side surface 10d, that is, on the front surface 10a and the back surface 10b. Further, the horizontal portion 17a may be formed in a cross shape in a plan view and may be opened on all side surfaces.

Further, the air guide member 20 may be connected to a portion other than the upper surface 10e of the base 10, and the tip end portion of the air guide member 20 is directed to, for example, laterally or diagonally upward. You may. Further, the air guide member 20 may be bent or curved, or may be bent or curved so that the air discharge direction (or suction direction) can be changed.

Further, the blower 30 may be of another type such as a blast fan or a centrifugal fan. Further, the blower 30 may be arranged in the horizontal portion 17a of the air guide duct 17, or a plurality of blowers 30 may be provided.

Further, the ultraviolet lamp 40 may be a light source of another type such as an ultraviolet LED, or a plurality of ultraviolet lamps 40 may be provided, in which case the ultraviolet lamp 40 is covered with one air guiding member 20. Alternatively, it may be individually covered with a plurality of air guiding members 20.

Further, the actions and effects shown in the above-described embodiments are merely a list of the most suitable actions and effects resulting from the present invention, and the actions and effects according to the present invention are not limited thereto.

1 UV sterilizer 10 base 10c right side of base 10d left side of base 14 motion sensor 15 detection switch 17 wind guide duct 20 wind guide member 24 louver member 24c blade plate 30 blower 33 impeller
33a Hub 33a1 Outer peripheral surface of the hub 33b Blade 40 Ultraviolet lamp C2 Axial center of the air guide member C3 Rotation center of the impeller

Claims

The base and
A cylindrical air guide member whose one end in the axial direction is detachably connected to the base,
A blower arranged on the base and generating an air flow in the air guide member,
An ultraviolet sterilizer comprising a light source fixed to the base so as to be arranged in the air guide member and irradiating the ultraviolet rays.
In the ultraviolet sterilizer according to claim 1,
An ultraviolet sterilizer comprising a detection switch for detecting the attachment / detachment of the air guide member.
In the ultraviolet sterilizer according to claim 1 or 2.
The ultraviolet sterilizer, wherein the air guide member is connected to the upper part of the base.
In the ultraviolet sterilizer according to any one of claims 1 to 3, the ultraviolet sterilizer
The blower is an ultraviolet sterilizer having a rotating impeller and being arranged in a state where the center of rotation of the impeller is aligned with the axis of the air guide member.
In the ultraviolet sterilizer according to claim 4,
The impeller has a hub and a plurality of blades provided on the outer peripheral surface of the hub.
The ultraviolet sterilizer is characterized in that the light source is arranged so as to be located on the rotation center side of the impeller with respect to the maximum outer diameter portion of the hub.
In the ultraviolet sterilizer according to any one of claims 1 to 5, the ultraviolet sterilizer
An ultraviolet sterilizer provided on the base, which communicates with the inside of the air guide member and includes an air guide duct which opens on the side surface of the base.
In the ultraviolet sterilizer according to claim 6,
The ultraviolet sterilizer is characterized in that the air duct is opened on two opposite sides of the base.
In the ultraviolet sterilizer according to any one of claims 1 to 7.
An ultraviolet sterilizer comprising a louver member arranged at the other end of the air guide member in the axial direction and having a plurality of blade plates inclined with respect to the axial center of the air guide member.
In the ultraviolet sterilizer according to claim 8,
A plurality of the louver members having the same shape are provided, and the louver members have the same shape.
The ultraviolet sterilizer is characterized in that the louver members are arranged in different postures in the tilting direction of the louver members of the louver members adjacent to each other.
In the ultraviolet sterilizer according to any one of claims 1 to 9, the ultraviolet sterilizer
An ultraviolet sterilizer that is arranged on the base and includes a motion sensor that detects the presence of people around.