JP2019216831A - Ultraviolet irradiation device - Google Patents

Abstract

To provide a new ultraviolet irradiation device having a high bactericidal effect.SOLUTION: An ultraviolet irradiation device 10 comprises: a housing 14 having an opening 12; an ultraviolet generation part provided in the housing 14 and emitting ultraviolet; a wind generation part 18 provided in the housing 14 and generating wind in the housing. The opening 12 is provided so as to arrange an object to be irradiated with the ultraviolet; the ultraviolet generation part is arranged so as to emit the ultraviolet toward the opening 12; and the wind generation part 18 is constituted so as to generate the wind touching the object to be irradiated.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ultraviolet irradiation device.

  Prevention of infectious diseases such as viruses is a very important issue in hospital rooms and nursing homes such as hospitals and nursing homes. For this reason, disinfection work using a chemical solution is common, but it is necessary to close the disinfection place during the work, and it is necessary to remove the chemical solution, so that the work load is large. On the other hand, as a sterilization method using no chemical solution, a sterilization apparatus using an ultraviolet lamp has been devised (see Patent Document 1).

JP-A-6-63108

  However, sterilization by ultraviolet rays requires that ultraviolet rays be irradiated to viruses and the like. Therefore, for example, in the case of a carpet-like floor having an uneven surface, the bactericidal effect of ultraviolet rays on the virus existing in the shadow of the raised portion is significantly reduced.

  The present invention has been made in view of these problems, and one of its exemplary purposes is to provide a new ultraviolet irradiation device having a high sterilizing effect.

  In order to solve the above problem, an ultraviolet irradiation device according to an embodiment of the present invention includes a housing having an opening, an ultraviolet light generator that is provided inside the housing, and emits ultraviolet light, And a wind generator that generates wind in the housing. The opening is provided so that an irradiation target to be irradiated with ultraviolet light is arranged, the ultraviolet light generation unit is arranged to irradiate ultraviolet light toward the opening, and the wind generation unit is It is configured to generate a wind that strikes.

  For example, when the object to be irradiated with ultraviolet rays is a brushed fabric such as a carpet, the ultraviolet rays may not directly reach viruses, bacteria, microorganisms, etc. (hereinafter, referred to as “viruses”) entering the gaps. is there. According to this aspect, by irradiating the irradiation target arranged in the opening with the wind, the sterilization target such as a virus attached to the irradiation target moves, and the target is present in a place where the ultraviolet rays have not reached before. UV light can be applied to the virus. As a result, an ultraviolet irradiation device having a high sterilizing effect can be realized.

  The opening may be formed so as to be closed by the irradiation target. Accordingly, it is possible to suppress the virus attached to the irradiation target from being scattered outside from the opening by the wind.

  The inner wall of the housing surrounding the opening may have a reflecting portion that reflects ultraviolet light toward the opening. Thus, the irradiation target is irradiated with the ultraviolet light without waste.

  The inner wall of the housing may be coated with titanium oxide. Thereby, deodorization and virus sterilization can be performed more efficiently.

  The wind generator may include a fan and a wind direction changing mechanism that changes the direction of the wind generated by the fan. Thus, the wind can be uniformly applied to a wide range of the irradiation target.

  The ultraviolet generator may emit ultraviolet light having a peak wavelength in the range of 250 to 300 nm. This can inactivate the virus and suppress the irradiation target from being deteriorated by ultraviolet rays.

  The housing may be provided between the opening and the ultraviolet ray generating section, a sterilization chamber for sterilizing the virus separated from the irradiation target with ultraviolet rays when the wind generated by the wind generation section hits the irradiation target with ultraviolet rays. . Thereby, the virus separated from the irradiation target can be efficiently sterilized.

  The housing is provided with a spare chamber in a region opposite to the side where the opening of the sterilizing chamber is located, and the wind generator is provided in a partition section separating the sterilizing chamber and the spare chamber. May have a preliminary ultraviolet ray generating section for irradiating the virus flowing from the sterilizing chamber via the wind generating section with ultraviolet rays. Thereby, the virus that has flowed into the spare chamber can be sterilized.

  The reserve chamber may be configured to be at a positive pressure with respect to the sterilization chamber. This makes it difficult for the virus to enter the spare room from the sterilization room, and the virus can be efficiently sterilized in the sterilization room.

  Note that any combination of the above-described components and any conversion of the expression of the present invention among methods, apparatuses, systems, and the like are also effective as embodiments of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the ultraviolet irradiation apparatus with a high sterilization effect can be implement | achieved.

It is sectional drawing of the schematic structure of the ultraviolet irradiation apparatus which concerns on this Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. Further, the dimensional ratio of each component in each drawing does not always match the dimensional ratio of an actual ultraviolet irradiation device. Further, the configuration described below is an exemplification, and does not limit the scope of the present invention in any way.

  FIG. 1 is a sectional view of a schematic configuration of the ultraviolet irradiation device according to the present embodiment. An ultraviolet irradiation device 10 shown in FIG. 1 includes a housing 14 having an opening 12, a grip portion 15 provided in the housing 14, and an ultraviolet generator that is provided inside the housing 14 and emits ultraviolet light L. , A plurality of LEDs 16, and a wind generator 18 that is provided inside the housing 14 and generates wind in the housing. The ultraviolet irradiation device 10 can easily perform sterilization by ultraviolet irradiation when the user grips the holding unit 15 and moves to a floor, a bed, furniture, or the like to be sterilized.

  The opening 12 is provided so that the carpet 20 as an irradiation target to which the ultraviolet light L is irradiated is arranged. Each of the plurality of LEDs 16 arranged in an array is arranged so as to emit ultraviolet light L toward the opening 12. This makes it possible to irradiate the carpet 20 with ultraviolet light with less unevenness. The small wind generator 18 is configured to generate a wind that hits the carpet 20.

  When the irradiation target of the ultraviolet light L is a raised material (pile 20a) such as the carpet 20, there is an area where the ultraviolet light L does not directly reach the virus entering the gap. Therefore, the ultraviolet irradiation device 10 according to the present embodiment applies the wind W to the carpet 20 disposed in the opening 12, so that a sterilization target such as a virus attached to the carpet 20 moves, It is possible to irradiate the virus L even to a virus that has been out of reach of the ultraviolet light L until then. As a result, an ultraviolet irradiation device 10 having a high sterilizing effect can be realized.

  The opening 12 is formed such that the peripheral end face 14 a is flat over the entire circumference so as to be closed by the carpet 20. In addition, the end surface 14a is formed of an elastic contact member that easily follows the shape of the irradiation target so that the virus inside the housing does not leak out when the housing 14 is pressed against the carpet 20. Good. The contact member is, for example, a flexible filter or rubber that does not allow a virus to pass but allows air to pass. Thereby, it is possible to suppress the virus attached to the carpet 20 from scattering from the opening 12 to the outside due to the wind W.

  The inner wall 14 b of the housing 14 surrounding the opening 12 has a reflecting portion 14 c that reflects the ultraviolet light L toward the opening 12. The reflection portion 14c is preferably, for example, one obtained by electrolytically polishing the surface of pure aluminum (JIS 1000 series). The reflecting section 14c configured as described above can efficiently reflect ultraviolet rays, and thus the ultraviolet rays are radiated to the irradiation target without waste.

  The inner wall 14b of the housing 14 may be coated with titanium oxide. Since titanium oxide generates active oxygen upon irradiation with ultraviolet light, it can more efficiently deodorize and kill viruses.

  The wind generator 18 includes a fan and a wind direction changing mechanism that changes the direction of the wind generated by the fan. The wind direction changing mechanism is, for example, a swing mechanism of a fan or a louver mechanism of an air conditioner. Thereby, the wind W can be uniformly applied to a wide range of the carpet 20. The direction of the fan is preferably such that it blows directly onto the carpet 20 from above. Further, the wind generated by the wind generator 18 is preferably a swirling flow directed directly to the carpet 20. Thereby, the pile 20a itself can be moved, and the virus which exists in the root part of the pile 20a where ultraviolet rays cannot directly reach can be sterilized.

  The LED 16 according to the present embodiment emits ultraviolet light having a peak wavelength in the range of 250 to 300 nm, preferably in the range of 260 to 290 nm. Generally, ultraviolet rays having a short wavelength are effective for inactivating viruses, but ultraviolet rays having a short wavelength may deteriorate organic substances such as resins and fibers. Therefore, by using the LED 16 having a peak wavelength in the range of 250 to 300 nm, the virus can be inactivated and the carpet 20 can be prevented from being deteriorated by ultraviolet rays.

  The casing 14 is provided between the opening 12 and the LED 16, a germicidal chamber 22 for sterilizing the virus separated from the carpet 20 (pile 20 a) with the ultraviolet light L by the wind W generated by the wind generator 18 hitting the carpet 20. Is provided. Thereby, the virus separated from the carpet 20 can be efficiently sterilized.

  The housing 14 is provided with a spare chamber 24 in a region of the sterilizing chamber 22 opposite to the side where the opening 12 is located. The wind generator 18 is provided on a partition 26 that separates the sterilization chamber 22 and the preliminary chamber 24. In the preliminary chamber 24, a preliminary LED 28 for irradiating the virus flowing from the sterilization chamber 22 via the wind generator 18 with ultraviolet light is provided in the partition wall 30.

  Thus, the virus that has flowed into the spare chamber 24 can be sterilized. In addition, the ultraviolet rays L ′ emitted from the spare LED 28 irradiate the partition wall portion 26 and do not reach the carpet 20. Therefore, the wavelength of the ultraviolet light emitted from the spare LED 28 can be set without considering the deterioration of the carpet 20. In other words, it is possible to select a spare LED 28 that emits ultraviolet light having a wavelength shorter than the peak wavelength of the ultraviolet light L emitted by the LED 16 provided in the sterilization chamber 22 and having a higher effect by inactivating the virus. In this way, the virus can be reliably inactivated by irradiating the virus with the ultraviolet rays not only in the sterilization chamber 22 but also in the preliminary chamber 24.

  The preliminary chamber 24 is configured to be at a positive pressure with respect to the sterilization chamber 22. Specifically, the inside of the preliminary chamber 24 is maintained at a positive pressure with respect to the sterilization chamber 22 by a compressor (not shown). This makes it difficult for the virus to enter the preliminary chamber 24 from the sterilization chamber 22, and the virus can be efficiently sterilized in the sterilization chamber 22.

  A reflection member 26a made of aluminum is provided on the surface of the partition wall 26 on the sterilization chamber 22 side. A reflection member 26b made of aluminum is provided on the surface of the partition 26 on the side of the preliminary chamber 24. Note that the reflection member only needs to have a high reflectance of ultraviolet rays, and may be, for example, PTFE. Thereby, in the space of the sterilization room 22 and the spare room 24, the virus is efficiently irradiated with ultraviolet rays. In a region 32 of the partition 30 opposite to the side on which the spare LED 28 is mounted, a control unit 34 for controlling the operation of the wind generator 18 and turning on and off the LED 16 and the spare LED 28 is arranged.

(Modification)
The above-described ultraviolet irradiation device 10 is provided with a preliminary chamber 24 in addition to the sterilizing chamber 22, but may have a configuration without the preliminary chamber. In this case, if the wind generator 18 is arranged so as to generate convection in the sterilization chamber 22, there is no fear that air leaks from the sterilization chamber 22 to the outside.

  As described above, the present invention has been described with reference to the above-described embodiments. However, the present invention is not limited to the above-described embodiments, and may be obtained by appropriately combining or replacing the configurations of the embodiments. It is included in the present invention. Further, it is also possible to appropriately change the combination and the order of processing in the embodiment based on the knowledge of those skilled in the art, and to add modifications such as various design changes to the embodiment. The embodiments described above can also be included in the scope of the present invention.

  DESCRIPTION OF SYMBOLS 10 Ultraviolet irradiation device, 12 opening part, 14 housing | casing, 14a end surface, 14b inner wall, 14c reflection part, 16 LED, 18 wind generation part, 20 carpet, 20a pile, 22 sterilization room, 24 preliminary room, 26 partition part, 26a , 26b reflective member, 28 spare LED, 30 partition part.

Claims (9)

A housing having an opening;
An ultraviolet ray generator that is provided inside the housing and emits ultraviolet rays,
A wind generator that is provided inside the housing and generates wind in the housing,
The opening is provided so that an irradiation target to be irradiated with the ultraviolet light is arranged,
The ultraviolet light generator is arranged to irradiate ultraviolet light toward the opening,
The ultraviolet irradiation device, wherein the wind generator is configured to generate a wind hitting the irradiation target.   The ultraviolet irradiation device according to claim 1, wherein the opening is formed so as to be closed by the irradiation target.   3. The ultraviolet irradiation device according to claim 1, wherein an inner wall of the housing surrounding the opening has a reflecting portion that reflects the ultraviolet light toward the opening. 4.   The ultraviolet irradiation device according to claim 3, wherein an inner wall of the housing is coated with titanium oxide.   The ultraviolet irradiation device according to any one of claims 1 to 4, wherein the wind generator includes a fan and a wind direction changing mechanism that changes a direction of a wind generated by the fan.   The ultraviolet irradiation device according to any one of claims 1 to 5, wherein the ultraviolet light generator emits ultraviolet light having a peak wavelength in a range of 250 to 300 nm.   The casing has a sterilization chamber for sterilizing the virus separated from the irradiation target with the ultraviolet light by the wind generated by the wind generation unit hitting the irradiation target between the opening and the ultraviolet light generation unit. The ultraviolet irradiation device according to claim 1, wherein the ultraviolet irradiation device is provided. The housing is provided with a spare chamber in a region on the opposite side to the side where the opening of the sterilization chamber is located,
The wind generation unit is provided in a partition unit that separates the sterilization chamber and the preliminary chamber,
The ultraviolet irradiation device according to claim 7, wherein the preliminary chamber is provided with a preliminary ultraviolet ray generator that irradiates a virus flowing from the sterilization chamber via the wind generator with ultraviolet rays.   The ultraviolet irradiation device according to claim 8, wherein the preliminary chamber is configured to have a positive pressure with respect to the sterilization chamber.

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