Ultraviolet irradiation device and ultraviolet light shielding unit

Abstract

An ultraviolet ray irradiation device of the present invention comprises: a sterilization chamber housing 100 that has an insertion port 120 for inserting a hand wearing a glove G into a sterilization chamber; an ultraviolet irradiation unit that irradiates the inside of the sterilization chamber with ultraviolet rays; ultraviolet light-shielding elastic bodies 210, 220 that are provided to cross the insertion direction of the hand wearing the glove G and can be penetrated by the hand wearing the glove G; and a frame body 230 that supports the peripheral edges of the ultraviolet light-shielding elastic bodies 210, 220, wherein the ultraviolet light-shielding bodies 210, 220 have a plurality of cuts formed along a plurality of radially extending lines, a plurality of elastic pieces 211, 221 are formed between the cuts, and the plurality of cuts formed in the ultraviolet light shielding bodies 210, 220 are attached to the frame body 230 so as to have a "deviation.　The ultraviolet ray irradiation device is a device that further improve safety by surely preventing the outside of the device from being irradiated with the ultraviolet rays when an operator inserts a glove into the ultraviolet ray irradiation device.

Description

Technical Field

[0001] The present invention relates to an ultraviolet irradiation device and an ultraviolet light shielding unit.

Background Art

[0002] Since sterilization by ultraviolet rays can achieve high effects on a wide range of viruses and bacteria such as norovirus, Salmonella, and O157, ultraviolet irradiation devices using ultraviolet rays have attracted attention in the food industry and the medical field.

[0003] Although ultraviolet rays can achieve high effects on a wide range of viruses and bacteria, on the other hand, it is also known that when operators and surrounding operators are irradiated with ultraviolet rays, it will have an adverse impact on the operators and surrounding operators. For this reason, it is important that the ultraviolet rays irradiated in the sterilization chamber formed in the sterilization chamber housing do not have an adverse impact on the operator and surrounding operators, and a highly safe ultraviolet irradiation device considering this point has also been proposed (see, for example, Patent Document 1).

[0004] FIG. 19 is a perspective view for explaining an ultraviolet irradiation device 900 described in Patent Document 1. As shown in FIG. 19, the ultraviolet irradiation device 900 described in Patent Document 1 includes a sterilization chamber housing 920 having an insertion port 910 into which a hand wearing a glove G is inserted, an ultraviolet irradiation lamp 930 that irradiates ultraviolet rays into the sterilization chamber 921 formed in the sterilization chamber housing 920, a sleeve-shaped guide portion 940 that extends in a direction from the edge of the insertion port 910 toward the inside of the sterilization chamber 921 to guide the insertion of the hand wearing the glove and shields ultraviolet rays, and an ultraviolet light shielding plate 950 that covers the front and side surfaces of the insertion port 910.

[0005] Note that the ultraviolet irradiation device 900 described in Patent Document 1 is a type of ultraviolet irradiation device in which a hand wearing a glove G is inserted from top to bottom. However, in the ultraviolet irradiation device 900 described in Patent Document 1, a type of ultraviolet irradiation device in which a hand wearing a glove G is inserted from bottom to top is also described.

[0006] The ultraviolet irradiation device 900 described in Patent Document 1 is an ultraviolet irradiation device that irradiates ultraviolet rays onto a glove G worn on an operator's hand to sterilize the surface of the glove G. That is, when a hand wearing the glove G worn on the operator's hand is inserted into the sterilization chamber 921 from the insertion port 910, the ultraviolet irradiation lamp 930 lights up in the sterilization chamber 921, and the surface of the glove G is irradiated with ultraviolet rays. Thereby, the surface of the glove G can be sterilized.

[0007] Also, as described above, the ultraviolet irradiation device 900 described in Patent Document 1 has a sleeve-shaped guide portion 940 and an ultraviolet light shielding plate 950. Therefore, it is possible to suppress the ultraviolet rays irradiated into the sterilization chamber 921 from being irradiated onto the operator who is currently performing sterilization and the surrounding operators. Thus, it can be said that the ultraviolet irradiation device 900 described in Patent Document 1 is a highly safe ultraviolet irradiation device in which the ultraviolet rays irradiated into the sterilization chamber 921 do not have an adverse effect on the operator who is currently performing sterilization and the surrounding operators.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0009] As described above, although the ultraviolet irradiation device 900 described in Patent Document 1 is a highly safe ultraviolet irradiation device, the development of an ultraviolet irradiation device with even higher safety is also desired. Here, if the ultraviolet rays can be surely blocked so that the ultraviolet rays do not leak out from the insertion port, it is possible to surely prevent the workers who are currently performing sterilization and the surrounding workers from being irradiated with ultraviolet rays. Therefore, in order to make the ultraviolet irradiation device have even higher safety, when the worker inserts the glove into the ultraviolet irradiation device, it becomes an issue to surely prevent the ultraviolet rays from being irradiated outside the sterilization chamber.

[0010] In particular, depending on the content of the work performed by the worker, etc., the worker may use short gloves that cannot cover the wrists and elbows, and may not be able to wear arm covers or the like that cover the wrists and elbows. In such a case, the wrists and elbows of the worker are exposed, that is, in a bare state, and the hand wearing the glove G is inserted into the sterilization chamber 921 from the insertion port 910. In such a case, the wrists and elbows of the worker will be located outside the insertion port. However, if the ultraviolet rays leak out from the ultraviolet irradiation device to the outside, the leaked ultraviolet rays may also irradiate the wrists and elbows. In order to be able to handle such a case, it is important to surely prevent the ultraviolet rays from being irradiated outside the ultraviolet irradiation device.

[0011] The present invention has been made in view of the above circumstances, and in an ultraviolet irradiation device that irradiates ultraviolet rays to a glove made of an ultraviolet non-permeable material worn on the hand of a worker to sterilize the surface of the glove, when the worker inserts the glove into the ultraviolet irradiation device, it is an object to surely prevent the ultraviolet rays from being irradiated outside the ultraviolet irradiation device and provide an ultraviolet irradiation device with even higher safety. Also, when the worker inserts the glove into the ultraviolet irradiation device, it is an object to surely prevent the ultraviolet rays from being irradiated outside the ultraviolet irradiation device and provide an ultraviolet light shielding unit that facilitates the maintenance of the ultraviolet irradiation device.

Means for Solving the Problems

[0012] [1] The ultraviolet irradiation device of the present invention is an ultraviolet irradiation device that irradiates ultraviolet rays onto gloves made of an ultraviolet non-transmissive material worn on the hands of an operator to sterilize the surface of the gloves. It includes an ultraviolet light-shielding member that shields the ultraviolet rays, a sterilization chamber housing that has a sterilization chamber inside and an insertion port for inserting the hand wearing the gloves into the sterilization chamber, an ultraviolet irradiation unit that is disposed inside the sterilization chamber housing and irradiates the sterilization chamber with ultraviolet rays, a thin plate-like member having ultraviolet non-transmittance and elasticity, which is provided so as to cross the insertion direction when inserting the hand wearing the gloves from the insertion port into the sterilization chamber, and is an ultraviolet light-shielding elastic body through which the hand wearing the gloves G can penetrate, and a frame provided along the peripheral edge of the insertion port, which supports the peripheral edges of the plurality of ultraviolet light-shielding elastic bodies stacked on top of each other, thereby attaching each ultraviolet light-shielding elastic body. The ultraviolet light-shielding elastic body has a plurality of cuts formed along a plurality of lines that radially extend from a predetermined position on the plate surface of the ultraviolet light-shielding elastic body toward the peripheral edge of the ultraviolet light-shielding elastic body. Between each of the plurality of cuts, a plurality of elastic pieces are formed, where the tip portion located on the side of the predetermined position becomes a free end that is free to move in the front-back direction of the ultraviolet light-shielding elastic body. Each ultraviolet light-shielding elastic body attached to the frame is attached to the frame such that the plurality of cuts formed in at least one of the ultraviolet light-shielding elastic bodies among the plurality of ultraviolet light-shielding elastic bodies has a "shift" along the plate surface with respect to the plurality of cuts of the other ultraviolet light-shielding elastic bodies.

[0013] [2] In the ultraviolet irradiation device of the present invention, it is preferable that each ultraviolet light-shielding elastic body attached to the frame is composed of ultraviolet light-shielding elastic bodies having the same number of cuts formed.

[0014] [3] In the ultraviolet irradiation device of the present invention, it is preferable that among the ultraviolet light-shielding elastic bodies attached to the frame, there are ultraviolet light-shielding elastic bodies having different numbers of cuts formed.

[0015] [4] In the ultraviolet irradiation device of the present invention, each ultraviolet light shielding elastic body attached to the frame body is preferably composed of an ultraviolet light shielding elastic body in which the positions where the tip portions of the plurality of elastic pieces formed on each ultraviolet light shielding elastic body gather are the same positions in each ultraviolet light shielding elastic body.

[0016] [5] In the ultraviolet irradiation device of the present invention, it is also preferable that among the ultraviolet light shielding elastic bodies attached to the frame body, there are ultraviolet light shielding elastic bodies in which the positions where the tip portions of the plurality of elastic pieces formed on each ultraviolet light shielding elastic body gather are positions separated in the radial direction in each ultraviolet light shielding elastic body.

[0017] [6] In the ultraviolet irradiation device of the present invention, it is preferable that irregularities exist on the plate surface of at least one of the facing ultraviolet light shielding elastic bodies among the ultraviolet light shielding elastic bodies attached to the frame body.

[0018] [7] In the ultraviolet irradiation device of the present invention, each ultraviolet light shielding elastic body attached to the frame body is preferably laminated in a state where the respective ultraviolet light shielding elastic bodies are close to each other or in contact with each other.

[0019] [8] In the ultraviolet irradiation device of the present invention, it is also preferable that each ultraviolet light shielding elastic body attached to the frame body is laminated in a state where the respective ultraviolet light shielding elastic bodies are separated from each other at a predetermined interval.

[0020] [9] In the ultraviolet irradiation device of the present invention, it is preferable that a space portion surrounded by the tip portions is formed at the positions of the tip portions of the plurality of elastic pieces.

[0021]

[10] In the ultraviolet irradiation device of the present invention, it is preferable that the frame body has antibacterial properties.

[0022]

[11] In the ultraviolet irradiation device of the present invention, an optical path control unit is further provided, which is arranged inside the sterilization chamber housing and combines a plurality of optical path control plates that control the optical path of ultraviolet rays by reflecting or absorbing ultraviolet rays in a louver shape. Preferably, the optical path control unit blocks the ultraviolet rays heading toward the insertion port.

[0023]

[12] In the ultraviolet irradiation device of the present invention, the ultraviolet irradiation device preferably includes a plurality of the ultraviolet irradiation units, and the optical path control unit is preferably arranged for each of the ultraviolet irradiation units.

[0024]

[13] In the ultraviolet irradiation device of the present invention, in the optical path control unit, it is preferable that the optical path control plate that is longer on the side closer to the insertion port is arranged.

[0025]

[14] In the ultraviolet irradiation device of the present invention, in the optical path control unit, it is preferable that the ends of the plurality of the optical path control plates on the side far from the ultraviolet irradiation unit are arranged so as to be aligned on a plane parallel to the direction in which the hand wearing the glove is inserted.

[0026]

[15] In the ultraviolet irradiation device of the present invention, in the optical path control unit, it is preferable that the surface on the side closer to the insertion port of at least one of the optical path control plates is configured to absorb ultraviolet rays.

[0027]

[16] In the ultraviolet irradiation device of the present invention, the ultraviolet irradiation device is preferably arranged inside the sterilization chamber housing and further includes a reflection member for reflecting the ultraviolet rays emitted from the ultraviolet irradiation unit to the side of the optical path control unit on the side opposite to the corresponding optical path control unit.

[0028]

[17] In the ultraviolet irradiation device of the present invention, at the end of the optical path control plate on the side close to the hand wearing the glove, processing or treatment is preferably performed to suppress damage to the glove when it comes into contact with the glove.

[0029]

[18] In the ultraviolet irradiation device of the present invention, the ultraviolet irradiation device further includes a human presence sensor that detects the presence of a human around it, and a sterilization chamber sensor that detects that the glove has been inserted into the sterilization chamber. When the human presence sensor does not detect the presence of a human, ultraviolet rays are irradiated onto the sterilization chamber. When the human presence sensor detects the presence of a human and the sterilization chamber sensor does not detect that the glove has been inserted into the sterilization chamber, the irradiation of ultraviolet rays onto the sterilization chamber is interrupted. When the human presence sensor detects the presence of a human and the sterilization chamber sensor detects that the glove has been inserted into the sterilization chamber, it is preferable to resume the irradiation of ultraviolet rays onto the sterilization chamber.

[0030]

[19] The ultraviolet ray shielding unit of the present invention is detachably attached to a sterilization chamber housing of an ultraviolet irradiation device that irradiates ultraviolet rays to sterilize the surface of gloves made of an ultraviolet ray non-permeable material worn on the hands of an operator, and when the operator inserts the gloves into the ultraviolet irradiation device, it is an ultraviolet ray shielding unit that prevents the ultraviolet rays from being irradiated outside the ultraviolet irradiation device. The ultraviolet irradiation device includes a sterilization chamber housing that is an ultraviolet ray shielding member for shielding the ultraviolet rays, has a sterilization chamber inside, and has an insertion port for inserting a hand wearing the gloves into the sterilization chamber, and an ultraviolet irradiation unit disposed inside the sterilization chamber housing for irradiating the sterilization chamber with ultraviolet rays. The ultraviolet ray shielding unit is a thin plate-like member having ultraviolet ray non-permeability and elasticity, and is provided so as to cross the insertion direction when inserting a hand wearing the gloves into the sterilization chamber through the insertion port. It includes an elastic body for shielding ultraviolet rays through which a hand wearing the gloves G can pass through, and a frame body provided along the peripheral edge of the insertion port for supporting the peripheral edges of the plurality of elastic bodies for shielding ultraviolet rays in a state where the plurality of elastic bodies for shielding ultraviolet rays are laminated, and the elastic body for shielding ultraviolet rays has a plurality of cuts formed along a plurality of lines extending radially from a predetermined position on the plate surface of the elastic body for shielding ultraviolet rays toward the peripheral edge of the elastic body for shielding ultraviolet rays. Between each of the plurality of cuts, a plurality of elastic pieces are formed, and the tip portions located on the side of the predetermined position are free ends that are free to move in the front-back direction of the elastic body for shielding ultraviolet rays. Each elastic body for shielding ultraviolet rays attached to the frame body is attached to the frame body such that the plurality of cuts formed in at least one of the elastic bodies for shielding ultraviolet rays have a "shift" along the plate surface with respect to the plurality of cuts of the other elastic bodies for shielding ultraviolet rays.

Advantages of the Invention

[0031] According to the ultraviolet irradiation device of the present invention, in an ultraviolet irradiation device that irradiates ultraviolet rays onto gloves made of an ultraviolet non-permeable material worn on the hands of an operator to sterilize the surface of the gloves, when the operator inserts the gloves into the ultraviolet irradiation device, it is possible to surely prevent the ultraviolet rays from being irradiated outside the ultraviolet irradiation device, and provide an ultraviolet irradiation device with further improved safety.

[0032] According to the ultraviolet light shielding unit of the present invention, when an operator inserts gloves into the ultraviolet irradiation device, it is possible to surely prevent the ultraviolet rays from being irradiated outside the ultraviolet irradiation device and provide an ultraviolet light shielding unit that facilitates the maintenance of the ultraviolet irradiation device. In addition, it is preferable that the ultraviolet light shielding unit of the present invention also has each feature described in [2] to

[10] of the above-described ultraviolet irradiation device of the present invention.

Brief Description of the Drawings

[0033]

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Figure 19

BEST MODE FOR CARRYING OUT THE INVENTION

[0034] Hereinafter, the ultraviolet irradiation device of the present invention and the ultraviolet light shielding unit of the present invention will be described based on the following embodiments. Note that the structures shown in the respective figures for explaining each embodiment are schematic diagrams, and the display of dimensions and angles is not necessarily in accordance with reality.

[0035] [Embodiment 1] First, the configuration of the ultraviolet irradiation device 10A according to Embodiment 1 will be described with reference to FIGS. 1 to 7. As shown in FIGS. 1 to 7, the ultraviolet irradiation device 10A according to Embodiment 1 has a sterilization chamber 110 inside and a sterilization chamber housing 100 having an insertion port 120 for inserting a hand wearing a glove G into the sterilization chamber 110. An ultraviolet irradiation lamp 130 disposed inside the sterilization chamber housing 100 for irradiating the sterilization chamber 110 with ultraviolet rays, a display unit 150 provided on the front surface of the sterilization chamber housing 100, a support column 160 for supporting the sterilization chamber housing 100 so as to be movable up and down along the z-axis, and elastic bodies 210 and 220 for ultraviolet light shielding provided so as to cross the insertion direction when inserting a hand wearing a glove G from the insertion port 120 into the sterilization chamber 110 and having cut lines C through which a hand wearing a glove G can pass through, and a frame body 230 provided along the peripheral edge portion 120a of the insertion port 120 for fixing the peripheral edge portions 210a and 220a of the elastic bodies 210 and 220 for ultraviolet light shielding.

[0036] Note that the ultraviolet irradiation lamp 130 is composed of a plurality of ultraviolet irradiation lamps. Therefore, in the following description, the "ultraviolet irradiation lamp 130" may be referred to as "a plurality of ultraviolet irradiation lamps 130" or simply "the ultraviolet irradiation lamp 130". Also, the elastic bodies 210 and 220 for ultraviolet light shielding and the frame body 230 will be described in detail later.

[0037] In addition, the ultraviolet irradiation device 10A according to Embodiment 1 includes a bare skin detection unit 310 as an insertion depth detection unit that detects that a hand wearing the glove G has been inserted to a predetermined depth in the sterilization chamber 110. The bare skin detection unit 310 can use, for example, an infrared sensor. The infrared sensor used in the ultraviolet irradiation device 10A according to Embodiment 1 detects infrared rays having a wavelength emitted from an object having the same temperature as the human bare skin temperature among the infrared rays received when a hand wearing the glove G is inserted into the insertion port 120. Thereby, the bare skin detection unit 310 can detect the exposed bare skin. Details of this bare skin detection unit 310 will be described later.

[0038] Incidentally, the ultraviolet irradiation device 10A according to Embodiment 1 is of a type in which a hand wearing the glove G is inserted into the sterilization chamber 110 from the bottom upward (see FIG. 1). For this reason, the insertion port 120 is provided on the lower surface side of the sterilization chamber housing 100 (see FIG. 2). Further, two insertion ports 120 are provided corresponding to the left and right hands. When these two insertion ports are described together, they may be referred to as "a pair of insertion ports 120". When inserting a hand wearing the glove G into the sterilization chamber 110, it is assumed that the palms of the left and right hands of the operator W are inserted into the sterilization chamber 110 with the palms facing the side of the face of the operator W.

[0039] The glove G is a glove made of an ultraviolet non-permeable material, and is formed, for example, from a rubber material such as nitrile or latex, or a thermoplastic resin containing an ultraviolet blocking substance such as titanium oxide. It is assumed that this glove G is short enough to cover from the fingertips to the wrists of the operator. For this reason, when the operator W wears work clothes with short sleeves, when the glove G is worn on the hand of the operator W, the wrists of the operator W are covered by the glove G, but the area Wa of the arm of the operator W that is not covered by the glove G is in a state where the skin is exposed.

[0040] In the glove G, the portion covering the wrist of the operator W is referred to as "the wrist portion Ga of the glove G". Further, the area Wa of the arm of the operator W that is not covered by the glove G is referred to as "the bare skin area Wa immediately below the wrist portion Ga of the glove G" or simply "the bare skin area Wa".

[0041] Hereinafter, the main components of the ultraviolet irradiation device 10A according to Embodiment 1 will be sequentially described in detail. First, the sterilization chamber housing 100 will be described with reference to FIGS. 1 and 2.

[0042] The sterilization chamber housing 100 is formed of an ultraviolet light-shielding member that shields ultraviolet light, such as a metal plate. On the front surface of the sterilization chamber housing 100 (the surface facing the face of the operator W), two slits S1 and S2 are formed at a predetermined interval (see FIG. 1). A translucent acrylic plate or the like that has been processed to block ultraviolet light, such as by smoke processing, is fitted into these two slits S1 and S2.

[0043] Thereby, when the operator W inserts a hand wearing the glove G into the sterilization chamber 110, the operator can visually confirm whether the hand wearing the glove G has been inserted to a predetermined depth in the sterilization chamber 110 without being affected by ultraviolet light. Note that the state of being inserted to a predetermined depth in the sterilization chamber 110 means a state of being inserted to a depth at which proper sterilization is possible in the sterilization chamber 110.

[0044] Further, the sterilization chamber housing 100 includes a sterilization chamber housing member 170 that forms one surface of the sterilization chamber housing 100, and the above-described insertion port 120 is formed in the sterilization chamber housing member 170. In the ultraviolet irradiation device 10A according to Embodiment 1, since the insertion port 120 is provided on the lower surface side of the sterilization chamber housing 100, the sterilization chamber housing member 170 forms a part of the bottom surface of the sterilization chamber housing 100. Note that the bare skin detection unit 310 is provided in the sterilization chamber housing member 170.

[0045] Incidentally, the plurality of ultraviolet irradiation lamps 130 disposed inside the sterilization chamber housing 100 are mercury lamps that emit ultraviolet rays with a wavelength of 185 nm to 280 nm. The plurality of ultraviolet irradiation lamps 130 are installed in parallel with the inner wall surface 110a on the upper surface side of the sterilization chamber 110, and the individual ultraviolet irradiation lamps 130 are arranged in parallel at a predetermined interval. Further, the plurality of ultraviolet irradiation lamps 130 are spanned across substantially the entire width direction (x-axis direction) inside the sterilization chamber 110. Further, a protective sheet 131 made of an ultraviolet-transmissive material is provided so as to cover the entire plurality of ultraviolet irradiation lamps 130.

[0046] The protective sheet 131 is configured to prevent fragments of the ultraviolet irradiation lamp 130 from scattering into the sterilization chamber 110 even if the ultraviolet irradiation lamp 130 is damaged. Although not shown, a protective net may be provided on the front side of the protective sheet 131. Also, although not shown, corrugated aluminum foil as a reflector is attached to each inner wall surface of the sterilization chamber housing 100, and the ultraviolet rays irradiated in the direction from the ultraviolet irradiation lamp 130 toward each inner wall surface of the sterilization chamber 110 are scattered while being reflected.

[0047] Subsequently, the ultraviolet ray shielding elastic bodies 210, 220 and the frame body 230 will be described in detail with reference to FIGS. 3 to 5.

[0048] FIG. 3 is a diagram showing the ultraviolet ray shielding elastic bodies 210, 220 used in the ultraviolet irradiation device 10A according to Embodiment 1. FIG. 3(a) is a plan view of the ultraviolet ray shielding elastic body 210, and FIG. 3(b) is a plan view of the ultraviolet ray shielding elastic body 220. In the following description, the ultraviolet ray shielding elastic body 210 may be described as the first ultraviolet ray shielding elastic body 210, and the ultraviolet ray shielding elastic body 220 may be described as the second ultraviolet ray shielding elastic body 220. Also, when referring to both the first ultraviolet ray shielding elastic body 210 and the second ultraviolet ray shielding elastic body 220, it may be denoted as the ultraviolet ray shielding elastic bodies 210, 220 or each ultraviolet ray shielding elastic body 210, 220.

[0049] In the ultraviolet irradiation device 10A according to Embodiment 1, the first ultraviolet light-shielding elastic body 210 and the second ultraviolet light-shielding elastic body 220 are the same and have the same shape and the same size. The ultraviolet light-shielding elastic bodies 210 and 220 are thin plate-like members having ultraviolet non-transmittance and elasticity, and have a circular planar shape. Also, for the ultraviolet light-shielding elastic bodies 210 and 220, synthetic rubber such as silicone rubber, natural rubber, synthetic resin, etc. can be used. Further, it is preferable that the first ultraviolet light-shielding elastic body 210 and the second ultraviolet light-shielding elastic body 220 have antibacterial properties on the plate surface, for example, by performing antibacterial treatment on the plate surface. In particular, it is preferable that the plate surface on the side that comes into contact with the hand wearing the glove G has antibacterial properties.

[0050] The ultraviolet light-shielding elastic bodies 210 and 220 have a diameter D of about 110 mm to 150 mm and a thickness t of about 0.5 mm to 3 mm. Also, a plurality of cuts C are formed along a line extending radially from a predetermined position on the plate surface of the ultraviolet light-shielding elastic bodies 210 and 220 (the center Po of the ultraviolet light-shielding elastic bodies 210 and 220) toward the peripheral edges 210a and 220a of the ultraviolet light-shielding elastic bodies 210 and 220. Note that the cuts C do not reach the peripheral edges 210a and 220a of the ultraviolet light-shielding elastic bodies 210 and 220 respectively.

[0051] In the ultraviolet irradiation device 10A according to Embodiment 1, there are 10 cuts C formed in each of the ultraviolet light-shielding elastic bodies 210 and 220. These 10 cuts are formed by dividing 360 degrees into 10 equal parts, and the angle formed with the adjacent cut C is 36 degrees. As a result, in the first ultraviolet light-shielding elastic body 210, 10 "wedge-shaped" elastic pieces 211 with a thin tip are formed between each cut C. Similarly, in the second ultraviolet light-shielding elastic body 220, 10 "wedge-shaped" elastic pieces 221 with a thin tip are formed between each cut C.

[0052] The ten elastic pieces 211 of the first ultraviolet ray-shielding elastic body 210 (which may also be referred to as each elastic piece 211) have an end portion 211a on the center Po side (referred to as the tip portion 211a) that is a free end with free movement in the front-back direction of the first ultraviolet ray-shielding elastic body 210. Similarly, for the ten elastic pieces 221 of the second ultraviolet ray-shielding elastic body 220 (which may also be referred to as each elastic piece 221), the end portion 221a on the center Po side (referred to as the tip portion 221a) is a free end with free movement in the front-back direction of the second ultraviolet ray-shielding elastic body 220.

[0053] Further, each elastic piece 211 of the first ultraviolet ray-shielding elastic body 210 has a pointed portion at the tip that is notched, and the tip portion 211a has a rounded shape. Thus, since the pointed portions at the tips of the elastic pieces 211 of the first ultraviolet ray-shielding elastic body 210 are notched, at the position where the tip portions 211a of the elastic pieces 211 of the first ultraviolet ray-shielding elastic body 210, that is, the position where the tip portions 211a converge, a space portion (through hole) 211b surrounded by the respective tip portions 211a is formed.

[0054] Similarly, for the second ultraviolet ray-shielding elastic body 220, the pointed portions at the tips are notched, and the tip portion 221a has a rounded shape. Thus, since the pointed portions at the tips of the elastic pieces 221 of the second ultraviolet ray-shielding elastic body 220 are notched, at the position where the tip portions 221a of the elastic pieces 221 of the second ultraviolet ray-shielding elastic body 220 converge, a space portion (through hole) 221b surrounded by the respective tip portions 221a is formed.

[0055] Note that the centers of the space portion 211b surrounded by the tip portions 211a of each elastic piece 211 and the space portion 221b surrounded by the tip portions 221a of each elastic piece 221 coincide with the center Po of the ultraviolet ray-shielding elastic bodies 210 and 220. The ultraviolet ray-shielding elastic bodies 210 and 220 configured in this way are attached to the frame body 230 in a stacked state (see FIG. 4).

[0056] FIG. 4 is a view showing a state in which the ultraviolet-ray shielding elastic bodies 210 and 220 are attached to the frame body 230 in a laminated state. FIG. 4(a) is a plan view seen from the side of the first ultraviolet-ray shielding elastic body 210, and FIG. 4(b) is a cross-sectional view taken along the line x-x of FIG. 4(a). Note that the ultraviolet-ray shielding unit 20 can be constituted by the ultraviolet-ray shielding elastic bodies 210 and 220 and the frame body 230.

[0057] As shown in FIG. 4, the ultraviolet-ray shielding elastic bodies 210 and 220 are supported by receiving grooves 231 and 232 provided on the inner peripheral surface of the frame body 230 at their respective peripheral edges 210a and 210b. Thereby, the ultraviolet-ray shielding elastic bodies 210 and 220 are in a state of being attached to the frame body 230. Note that the frame body 230 preferably has antibacterial properties. To achieve this, antibacterial processing may be performed on the surface of the frame body 230, or a material with high antibacterial properties such as copper may be used as the material of the frame body 230.

[0058] When attaching the ultraviolet-ray shielding elastic bodies 210 and 220 to the frame body 230, the peripheral edges 210a and 220a are supported by the receiving grooves 231 and 232 of the frame body 230 such that the cut C formed in the ultraviolet-ray shielding elastic bodies 210 and 220 has a "shift" along the plate surface of the ultraviolet-ray shielding elastic bodies 210 and 220. In other words, when the ultraviolet-ray shielding elastic bodies 210 and 220 are viewed in a plane, the peripheral edges 210a and 220a are supported by the receiving grooves 231 and 232 of the frame body 230 so that the cut C of the first ultraviolet-ray shielding elastic body 210 does not coincide with the cut C of the second ultraviolet-ray shielding elastic body 220.

[0059] In this case, since the cut C of the ultraviolet-ray shielding elastic bodies 210 and 220 is formed at an angle of 36 degrees, for example, as shown in FIG. 4(a), the cut C (the cut C shown by the solid line) of the first ultraviolet-ray shielding elastic body 210 and the cut C (the cut C shown by the broken line) of the second ultraviolet-ray shielding elastic body 220 are such that the first ultraviolet-ray shielding elastic body 210 and the second ultraviolet-ray shielding elastic body 220 are supported by the receiving grooves 231 and 232 of the frame body 230 with a "shift" of 18 degrees each.

[0060] Incidentally, the "displacement" between the cut C of the first ultraviolet-ray shielding elastic body 210 and the cut C of the second ultraviolet-ray shielding elastic body 220 is 18 degrees in FIG. 4, but it is not limited to 18 degrees. However, since it is preferable that the "displacement" between the cut C of the first ultraviolet-ray shielding elastic body 210 and the cut C of the second ultraviolet-ray shielding elastic body 220 is larger, it is set to 18 degrees here so as to be the maximum "displacement".

[0061] Also, in the ultraviolet-ray irradiation device 10A according to Embodiment 1, the first ultraviolet-ray shielding elastic body 210 and the second ultraviolet-ray shielding elastic body 220 are laminated in a state of being close to each other. The interval d (interval along the z-axis) between the first ultraviolet-ray shielding elastic body 210 and the second ultraviolet-ray shielding elastic body 220 is a slight interval (for example, about 1 mm to 5 mm), but this interval is not particularly limited and can be set to an appropriate optimum interval, and the first ultraviolet-ray shielding elastic body 210 and the second ultraviolet-ray shielding elastic body 220 may be in contact with each other. By laminating the first ultraviolet-ray shielding elastic body 210 and the second ultraviolet-ray shielding elastic body 220 in a state of being close to each other or in contact with each other, the size of the ultraviolet-ray irradiation device 10A in the height direction (the insertion direction of the hand wearing the glove G) can be reduced.

[0062] As described above, by supporting the peripheral portions 210a and 220a of the ultraviolet-ray shielding elastic bodies 210 and 220 by the frame body 230, the ultraviolet-ray shielding elastic bodies 210 and 220 are attached to the frame body 230. Here, when attaching the ultraviolet-ray shielding elastic bodies 210 and 220 to the frame body 230, the peripheral portions 210a and 220a of the ultraviolet-ray shielding elastic bodies 210 and 220 may be adhered to the receiving grooves 231 and 232 of the frame body 230 with an adhesive or the like, or may have a structure that allows attachment and detachment.

[0063] When the elastic bodies 210 and 220 for ultraviolet light shielding are detachable from the frame body 230, it is preferable that the elastic bodies 210 and 220 for ultraviolet light shielding can be easily inserted and cannot be easily pulled out after being inserted. For example, elastic protrusions are provided on the surfaces of the peripheral portions 210a and 220a of the elastic bodies 210 and 220 for ultraviolet light shielding, and the receiving grooves 231 and 232 of the frame body 230 have concave portions with which the protrusions engage. Note that the attachment structure of the elastic bodies 210 and 220 for ultraviolet light shielding to the frame body 230 is not particularly limited, and various structures can be adopted.

[0064] FIG. 5 is a plan view of the ultraviolet irradiation device 10A according to Embodiment 1 as viewed from below along the z-axis. As shown in FIG. 5, when the ultraviolet irradiation device 10A according to Embodiment 1 is viewed from below along the z-axis, two second elastic bodies 220 for ultraviolet light shielding attached to the frame body 230 are arranged side by side with a predetermined interval corresponding to the left and right hands of the operator W. Note that the interval between the two second elastic bodies 220 for ultraviolet light shielding is not particularly limited, but it is preferably set to an interval at which it is easy for the operator to insert the left and right hands in a natural state.

[0065] Since the elastic bodies 210 and 220 for ultraviolet light shielding are attached to the frame body 230 as shown in FIGS. 4 and 5, when a hand wearing the glove G is inserted through the insertion port 120 (see FIG. 2) located at the lower end of the sterilization chamber housing 100 (see FIGS. 1 and 2), the hand wearing the glove G can penetrate through the respective elastic pieces 221 of the second elastic body 220 for ultraviolet light shielding and the respective elastic pieces 211 of the first elastic body 210 for ultraviolet light shielding. Note that when performing such an operation, the operator W preferably inserts the hand wearing the glove G in a "pinched" manner.

[0066] FIG. 6 is a view showing a state in which a hand wearing the glove G has penetrated through the respective elastic pieces 221 of the second ultraviolet ray shielding elastic body 220 and the respective elastic pieces 211 of the first ultraviolet ray shielding elastic body 210. In FIG. 6, the left hand of the operator W is shown. The respective elastic pieces 211, 221 of the ultraviolet ray shielding elastic bodies 210, 220 have the respective tip portions 211a, 221a of the respective elastic pieces 211, 221 as free ends. For this reason, the hand wearing the glove G can penetrate through the respective elastic pieces 221 of the second ultraviolet ray shielding elastic body 220 and the respective elastic pieces 211 of the first ultraviolet ray shielding elastic body 210, respectively.

[0067] Specifically, when the hand wearing the glove G is inserted from the insertion port 120 located at the lower end of the sterilization chamber housing 100, the respective elastic pieces 221, 211 are bent upward (the advancing direction of the hand wearing the glove G) along with the movement of the hand wearing the glove G, and are kept in close contact with the surface of the glove G by the restoring force that tries to return to the original state. Then, when the hand wearing the glove G is further advanced upward, as shown in FIG. 6, the hand wearing the glove G penetrates through the ultraviolet ray shielding elastic bodies 210, 220. After that, when the hand wearing the glove G is inserted to a predetermined depth in the sterilization chamber 110 (a state where it is inserted to a depth at which proper sterilization is possible in the sterilization chamber 110), the respective elastic pieces 211, 221 of each ultraviolet ray shielding elastic body surround the periphery of the wrist portion Ga of the glove G in a state of being in close contact with the wrist portion Ga of the glove G.

[0068] At this time, the cut C of the first ultraviolet ray shielding elastic body 210 and the cut C of the second ultraviolet ray shielding elastic body 220 are present at positions shifted by 18 degrees from each other. For this reason, the respective elastic pieces 221 of the second ultraviolet ray shielding elastic body 220 are present at the positions of the respective cuts C of the first ultraviolet ray shielding elastic body 210, and the respective elastic pieces 211 of the first ultraviolet ray shielding elastic body 210 are present at the positions of the respective cuts C of the second ultraviolet ray shielding elastic body 220.

[0069] Therefore, the wrist part Ga of the glove G is covered without any gaps by the respective elastic pieces 211 of the first ultraviolet ray shielding elastic body 210 and the respective elastic pieces 221 of the second ultraviolet ray shielding elastic body 220. As a result, the ultraviolet rays emitted by the ultraviolet ray irradiation lamp 130 can be surely shielded, and it is possible to surely prevent the ultraviolet rays from irradiating the rear side (the bare skin area Wa of the left hand of the operator W) than the ultraviolet ray shielding elastic bodies 210 and 220.

[0070] Here, the left hand of the operator W has been described, but the same applies to the right hand. That is, the wrist part Ga of the glove G worn on the right hand of the operator W is covered without any gaps by the respective elastic pieces 211 of the first ultraviolet ray shielding elastic body 210 and the respective elastic pieces 221 of the second ultraviolet ray shielding elastic body 220. As a result, the ultraviolet rays emitted by the ultraviolet ray irradiation lamp 130 can be surely shielded, and it is possible to surely prevent the ultraviolet rays from irradiating the rear side (the bare skin area Wa of the right hand of the operator W) than the ultraviolet ray shielding elastic bodies 210 and 220.

[0071] Subsequently, the bare skin detection unit 310 as the insertion depth detection unit will be described. The bare skin detection unit 310 is provided at a position where it can detect the bare skin area Wa directly below the wrist part Ga of the glove G when the hand wearing the glove G is inserted to a predetermined depth in the sterilization chamber 110 (for example, the state shown in FIG. 6). Specifically, the bare skin detection unit 310 is attached to the peripheral edge 120a of the pair of insertion ports 120 formed in the sterilization chamber housing member 170 at positions closer to the entrance side of the insertion port 120 than the ultraviolet ray shielding elastic bodies 210 and 220. When the bare skin detection unit 310 detects the bare skin area Wa directly below the wrist part Ga of the glove G, it outputs a bare skin detection signal as an insertion depth detection signal.

[0072] By attaching the bare skin detection unit 310 to the position described above, when the hand wearing the glove G is inserted to a predetermined depth in the sterilization chamber 110 (see Fig. 6), the bare skin detection unit 310 detects the bare skin area Wa directly below the wrist portion Ga of the glove G and outputs a bare skin detection signal. Note that the state where the hand wearing the glove G is "inserted to a predetermined depth in the sterilization chamber 110" means that, as described above, the hand wearing the glove G is inserted to a depth at which proper sterilization is possible within the sterilization chamber 110. Therefore, when a bare skin detection signal is output from the bare skin detection unit 310, it indicates that the hand wearing the glove G is inserted to a depth at which proper sterilization is possible in the sterilization chamber 110.

[0073] Next, the control device 400 will be described with reference to Fig. 7. The control device 400 controls the entire ultraviolet irradiation device 10A according to Embodiment 1. Here, however, the control related to the description of the ultraviolet irradiation device 10A according to Embodiment 1 will be described. In this case, as shown in Fig. 7, the control performed by the control device 400 includes on / off control of the ultraviolet irradiation lamp 130 and control for displaying on the display unit 150 whether or not the hand wearing the glove G is inserted to a predetermined depth in the sterilization chamber 110. Note that these controls are performed based on the bare skin detection signal output from the bare skin detection unit 310.

[0074] That is, when the hand wearing the glove G is in the state shown in Fig. 6, the bare skin detection unit 310 detects the bare skin area Wa, and the bare skin detection signal is sent to the control device 400. Based on the bare skin detection signal sent from the bare skin detection unit 310, the control device 400 sends a signal indicating that the hand wearing the glove G is inserted to a predetermined depth (depth at which proper sterilization is possible) in the sterilization chamber 110 to the display unit 150.

[0075] In the display unit 150, a display is made indicating that the hand wearing the glove G is inserted to a predetermined depth (a depth at which proper sterilization is possible) of the sterilization chamber 110. As an example of the display performed by the display unit 150, for example, a blue lamp is lit or an audible notification is made. Thereby, the operator W can know that the hand wearing the glove G is inserted to a depth at which proper sterilization is possible. Further, the operator W can visually observe the state in which the hand wearing the glove G enters the sterilization chamber 110 through the slits S1 and S2 (see FIG. 1). Note that it is preferable that the operator W opens each finger after inserting the hand wearing the glove G into the sterilization chamber 110.

[0076] In this way, in a state where the hand wearing the glove G is inserted to a predetermined depth (a depth at which proper sterilization is possible) of the sterilization chamber 110, the control device 400 turns on the ultraviolet irradiation lamp 130. By turning on the ultraviolet irradiation lamp 130, the surface of the glove G can be sterilized. At this time, as shown in FIG. 6, the wrist portion Ga of the glove G is covered without a gap by the respective elastic pieces 211 of the first ultraviolet light shielding elastic body 210 and the respective elastic pieces 221 of the second ultraviolet light shielding elastic body 220.

[0077] Thereby, the ultraviolet rays emitted by the ultraviolet irradiation lamp 130 can be surely shielded, and it can be surely prevented that the ultraviolet rays are irradiated to the rear side (the bare skin area Wa of the left hand of the operator W) than the ultraviolet light shielding elastic bodies 210 and 220. Further, it is possible to surely prevent not only the operator who is currently performing sterilization but also the operators around the operator W from being irradiated with ultraviolet rays. Thereafter, the control device 400 turns off the ultraviolet irradiation lamp 130.

[0078] Incidentally, it is preferable that the control device 400 performs control to preheat the ultraviolet irradiation lamp 130 before lighting it. In this case, a worker detection unit (not shown) that detects the presence of the worker W who intends to perform sterilization at the current time in front of the ultraviolet irradiation device 10A according to the first embodiment is provided on the front surface of the sterilization chamber housing 100. When the worker W faces the sterilization chamber housing 100 (see FIG. 2), the worker detection unit detects the presence of the worker W, and the ultraviolet irradiation lamp 130 is preheated using the time (for example, about 2 seconds) from the time when the worker W is detected until the bare skin detection unit 310 detects the bare skin area Wa.

[0079] In this way, by performing preheating for about 2 seconds before lighting the ultraviolet irradiation lamp 130, the rise time when lighting the ultraviolet irradiation lamp 130 can be shortened. As a result, an efficient sterilization operation becomes possible, and the long life of the ultraviolet irradiation lamp 130 can also be achieved.

[0080] As described above, in the ultraviolet irradiation device 10A according to the first embodiment, when the hand wearing the glove G is inserted from the insertion port 120 into each elastic piece 221 of the second ultraviolet light shielding elastic body, the hand wearing the glove G passes through each elastic piece 221 of the second ultraviolet light shielding elastic body 220 and each elastic piece 211 of the first ultraviolet light shielding elastic body 210. Then, when the hand wearing the glove G is inserted to a predetermined depth in the sterilization chamber 110, each elastic piece 211, 221 of the ultraviolet light shielding elastic bodies 210, 220 surrounds the periphery of the wrist portion Ga of the glove G in a state where each elastic piece 211, 221 is in close contact with the wrist portion Ga of the glove G.

[0081] At this time, since the cut C of the first ultraviolet ray-shielding elastomer 210 and the cut C of the second ultraviolet ray-shielding elastomer 220 are located at positions shifted by 18 degrees from each other, at the position of the cut C of the first ultraviolet ray-shielding elastomer 210, each elastic piece 221 of the second ultraviolet ray-shielding elastomer 220 exists, and at the cut C of the second ultraviolet ray-shielding elastomer 220, each elastic piece 211 of the first ultraviolet ray-shielding elastomer 210 exists. Thereby, the ultraviolet rays emitted by the ultraviolet ray irradiation lamp 130 can be surely shielded, and it is possible to surely prevent the ultraviolet rays from being irradiated to the rear side (the bare skin area Wa of the operator W's left hand) than the ultraviolet ray-shielding elastomers 210 and 220.

[0082] [Embodiment 2] Subsequently, the ultraviolet ray irradiation device 10B according to Embodiment 2 will be described. Since the external configuration of the ultraviolet ray irradiation device 10B according to Embodiment 2 is the same as that of the ultraviolet ray irradiation device 10A according to Embodiment 1, when it is necessary to describe the external configuration of the ultraviolet ray irradiation device 10B according to Embodiment 2, it will be described with reference to FIG. 1. Further, since the cross-sectional view of the ultraviolet ray irradiation device 10A shown in FIG. 1 can also be used as the cross-sectional view of the ultraviolet ray irradiation device 10B according to Embodiment 2, when it is necessary to describe the cross-sectional configuration of the ultraviolet ray irradiation device 10B according to Embodiment 2, it will be described with reference to FIG. 2.

[0083] The difference between the ultraviolet ray irradiation device 10B according to Embodiment 2 and the ultraviolet ray irradiation device 10A according to Embodiment 1 is the ultraviolet ray-shielding elastomer. The planar shapes of the first ultraviolet ray-shielding elastomer (referred to as the first ultraviolet ray-shielding elastomer 250) and the second ultraviolet ray-shielding elastomer (referred to as the second ultraviolet ray-shielding elastomer 260) used in the ultraviolet ray irradiation device 10B according to Embodiment 2 are oval. Note that also in the ultraviolet ray irradiation device 10B according to Embodiment 2, when referring to both the first ultraviolet ray-shielding elastomer 250 and the second ultraviolet ray-shielding elastomer 260, they may be denoted as the ultraviolet ray-shielding elastomers 250, 260 or each ultraviolet ray-shielding elastomer 250, 260.

[0084] FIG. 8 is a diagram for explaining a first ultraviolet light shielding elastic body 250 and a second ultraviolet light shielding elastic body 260 used in the ultraviolet irradiation device 10B according to Embodiment 2. FIG. 8(a) is a plan view showing the first ultraviolet light shielding elastic body 250, FIG. 8(b) is a plan view showing the second ultraviolet light shielding elastic body 260, and FIG. 8(c) is a plan view showing a state in which the first ultraviolet light shielding elastic body 250 and the second ultraviolet light shielding elastic body 260 are laminated and attached to the frame body 230.

[0085] The long diameter D1 of the ultraviolet light shielding elastic bodies 250 and 260 is about 120 mm to 180 mm, the short diameter D2 is about 100 mm to 140 mm, and the thickness is about 0.5 mm to 3 mm. However, the sizes of the ultraviolet light shielding elastic bodies 250 and 260 are not limited to such sizes.

[0086] As shown in FIG. 8(a), in the first ultraviolet light shielding elastic body 250, a plurality of cuts C are formed along a line extending radially from a predetermined position of the first ultraviolet light shielding elastic body 250 (the center Po of the first ultraviolet light shielding elastic body 250) toward the peripheral edge 250a of the first ultraviolet light shielding elastic body 250. Note that the cuts C do not reach the peripheral edge 250a.

[0087] As shown in FIG. 8(b), in the second ultraviolet light shielding elastic body 260, a plurality of cuts C are formed along a plurality of lines extending radially from a predetermined position of the second ultraviolet light shielding elastic body 260 (the center Po of the second ultraviolet light shielding elastic body 260) toward the peripheral edge 260a of the second ultraviolet light shielding elastic body 260. Also in the second ultraviolet light shielding elastic body 260, the cuts C do not reach the peripheral edge 260a.

[0088] Further, the elastic bodies 250 and 260 for ultraviolet light shielding are the same as the elastic bodies 210 and 220 for ultraviolet light shielding described in Embodiment 1. It is assumed that there are 10 cuts C, and the angle formed by adjacent cuts C is 36 degrees. Therefore, in the first elastic body 250 for ultraviolet light shielding, 10 "wedge-shaped" elastic pieces 251 with a thin tip are formed between each pair of cuts C. Similarly, in the second elastic body 260 for ultraviolet light shielding, 10 "wedge-shaped" elastic pieces 261 with a thin tip are formed between each pair of cuts C. In the elastic bodies 250 and 260 for ultraviolet light shielding, the length of each cut C is determined according to the distance to the peripheral portions 250a and 260a. That is, the longer the distance from the center Po to the peripheral portions 250a and 260a, the longer the length of each cut C.

[0089] For the 10 elastic pieces 251 of the first elastic body 250 for ultraviolet light shielding (sometimes referred to as each elastic piece 251), the end portion 251a on the center Po side (referred to as the tip portion 251a) is the free end. Similarly, for the 10 elastic pieces 261 of the second elastic body 260 for ultraviolet light shielding (sometimes referred to as each elastic piece 261), the end portion 261a on the center Po side (referred to as the tip portion 261a) is the free end.

[0090] Further, the tip of each elastic piece 251 of the first elastic body 250 for ultraviolet light shielding is notched, and the tip portion 251a has a rounded shape. Thus, since the tip of each elastic piece 251 of the first elastic body 250 for ultraviolet light shielding is notched, a space portion (through hole) 251b surrounded by the respective tip portions 251a is formed at the position where the respective tip portions 251a of each elastic piece 251 of the first elastic body 250 for ultraviolet light shielding gather.

[0091] Similarly, for the second UV-blocking elastomer 260, each elastic piece 261 of the second UV-blocking elastomer 260 has a notched sharp tip portion, and the tip portion 261a has a rounded shape. Thus, since each elastic piece 261 of the second UV-blocking elastomer 260 has a notched sharp tip portion, a space portion (through hole) 261b surrounded by each of the tip portions 261a of each elastic piece 261 of the second UV-blocking elastomer 260 is formed at the position where the tip portions 261a of each elastic piece 261 of the second UV-blocking elastomer 260 converge.

[0092] Note that the centers of the space portion 251b surrounded by each tip portion 251a of each elastic piece 251 and the space portion 261b surrounded by each tip portion 261a of each elastic piece 261 coincide with the center Po of the UV-blocking elastomers 250 and 260. The UV-blocking elastomers 250 and 260 configured as described above are attached to the frame body 230 in a state of being laminated on the frame body 230 (see Fig. 8(c)). Also in this case, the UV-blocking unit 20 can be configured by the UV-blocking elastomers 250 and 260 and the frame body 230.

[0093] In the UV irradiation device 10B according to the second embodiment, since the UV-blocking elastomers 250 and 260 are elliptical instead of circular, when attaching the UV-blocking elastomers 250 and 260 to the frame body 230, the attachment positions of the UV-blocking elastomers 250 and 260 with respect to the frame body 230 are limited. Therefore, it is necessary to form each cut C so that the cut C of the first UV-blocking elastomer 250 and the cut C of the second UV-blocking elastomer 260 do not coincide (are in shifted positions). In this case, the cut C of the first UV-blocking elastomer 250 and the cut C of the second UV-blocking elastomer 260 are formed with a 18-degree shift from each other.

[0094] Thereby, when attaching the first UV-blocking elastomer 250 and the second UV-blocking elastomer 260 to the frame body 230 in a laminated state, as shown in Fig. 8(c), the cut C (the cut C shown by the solid line) of the first UV-blocking elastomer 250 and the cut C (the cut C shown by the broken line) of the second UV-blocking elastomer 260 exist at positions having a 18-degree shift.

[0095] FIG. 9 is a plan view of the ultraviolet irradiation device 10B according to Embodiment 2 as viewed from below along the z-axis. As shown in FIG. 9, when the sterilization chamber housing 100 is viewed from below along the z-axis, two second ultraviolet light shielding elastic bodies 260 attached to the frame body 230 are arranged side by side with a predetermined interval corresponding to the left and right hands of the operator. The interval between the two second ultraviolet light shielding elastic bodies 260 is not particularly limited, but it is preferably set to an interval at which the operator W can easily insert the left and right hands in a natural state.

[0096] Also in the ultraviolet irradiation device 10B according to Embodiment 2, similar to the ultraviolet irradiation device 10A according to Embodiment 1, a hand wearing the glove G can penetrate each elastic piece 251, 261 of the ultraviolet light shielding elastic bodies 250, 260 (see FIG. 6). Then, when the hand wearing the glove G is inserted to a predetermined depth in the sterilization chamber 110, each elastic piece 251, 261 of the ultraviolet light shielding elastic bodies 250, 260 surrounds the periphery of the wrist portion Ga of the glove G in a state of being in close contact with the wrist portion Ga of the glove G.

[0097] At this time, since the cut C of the first ultraviolet light shielding elastic body 250 and the cut C of the second ultraviolet light shielding elastic body 260 are located at positions shifted by 18 degrees from each other, each elastic piece 251 of the second ultraviolet light shielding elastic body 260 exists at the position of the cut C of the first ultraviolet light shielding elastic body 250, and each elastic piece 261 of the first ultraviolet light shielding elastic body 250 exists at the cut C of the second ultraviolet light shielding elastic body 260. Thereby, also in the ultraviolet irradiation device 10B according to Embodiment 2, similar to the ultraviolet irradiation device 10A according to Embodiment 1, the ultraviolet rays emitted from the ultraviolet irradiation lamp 130 can be surely shielded, and it can be surely prevented that the ultraviolet rays are irradiated to the rear side (the bare skin area Wa of the left hand of the operator W) than the ultraviolet light shielding elastic bodies 250, 260.

[0098] Further, in the ultraviolet irradiation device 10B according to the second embodiment, since the ultraviolet light shielding elastic bodies 250 and 260 are oval, each elastic piece 251 and 261 into which the hand wearing the glove G is inserted is long in the lateral direction (the direction along the x-axis). Therefore, each operator W does not need to be conscious of "pinching" the hand when inserting the hand wearing the glove G, and can insert the hand wearing the glove G in a natural form.

[0099] [Modification of the ultraviolet irradiation device 10B according to the second embodiment] FIG. 10 is a diagram showing a first ultraviolet light shielding elastic body 270 and a second ultraviolet light shielding elastic body 280 used in a modification of the ultraviolet irradiation device 10B according to the second embodiment. FIG. 10(a) is a plan view showing the first ultraviolet light shielding elastic body 270, FIG. 10(b) is a plan view showing the second ultraviolet light shielding elastic body 280, and FIG. 10(c) is a plan view showing a state in which the first ultraviolet light shielding elastic body 270 and the second ultraviolet light shielding elastic body 280 are laminated and attached to the frame body 230.

[0100] In the ultraviolet irradiation device 10B according to the second embodiment described above, as shown in FIG. 8(c), the position where the tip portions 251a of the elastic pieces 251 of the first ultraviolet light shielding elastic body 250 gather (the position where the space portion 251b is formed), and the position where the tip portions 261a of the elastic pieces 261 of the second ultraviolet light shielding elastic body 260 gather (the position where the space portion 261b is formed) are both at the same position (the center Po of the ultraviolet light shielding elastic bodies 250 and 260).

[0101] On the other hand, in a modification of the ultraviolet irradiation device 10B according to the second embodiment, as shown in FIG. 10, the position where the tip portions 271a of the elastic pieces 271 of the first ultraviolet light shielding elastic body 270 gather (the position of the space portion 271b surrounded by the tip portions 271a), and the position where the tip portions 281a of the elastic pieces 281 of the second ultraviolet light shielding elastic body 280 gather (the position of the space portion 281b surrounded by the tip portions 281a) are at positions separated along the major axis of the ultraviolet light shielding elastic bodies 270 and 280.

[0102] That is, when the center of the space portion 271b surrounded by each tip portion 271a is P1 and the center of the space portion 281b surrounded by each tip portion 281a is P2, the center P1 of the space portion 271b and the center P2 of the space portion 281b are located at positions separated along the major axes of the ultraviolet ray shielding elastic bodies 270 and 280, respectively. Note that the distance between the center P1 of the space portion 271b and the center P2 of the space portion 281b is preferably about 3 mm to 20 mm. In a modified example of the ultraviolet ray irradiation device 10B according to the second embodiment, as shown in FIGS. 10(a) and 10(b), the cut C of the first ultraviolet ray shielding elastic body 270 and the cut C of the second ultraviolet ray shielding elastic body 280 are formed without a 18-degree shift from each other.

[0103] As described above, in the modified example of the ultraviolet ray irradiation device 10B according to the second embodiment, the position where the tip portions 271a of the elastic pieces 271 of the first ultraviolet ray shielding elastic body 270 gather (the position of the space portion 271b surrounded by the tip portions 271a) and the position where the tip portions 281a of the elastic pieces 281 of the second ultraviolet ray shielding elastic body 280 gather (the position of the space portion 281b surrounded by the tip portions 281a) are located at positions separated along the major axes of the ultraviolet ray shielding elastic bodies 270 and 280. However, similar to the ultraviolet ray irradiation device 10B according to the second embodiment, a hand wearing the glove G can penetrate the elastic pieces 271 and 281 formed between adjacent cuts C.

[0104] Therefore, similar to the ultraviolet ray irradiation device 10B according to the second embodiment, when a hand wearing the glove G is inserted to a predetermined depth in the sterilization chamber 110, each of the elastic pieces 271 and 281 of the ultraviolet ray shielding elastic bodies 270 and 280 will surround the periphery of the wrist portion Ga of the glove G in a state of being in close contact with the wrist portion Ga of the glove G.

[0105] Incidentally, in this case, although there are a plurality of intersection points Cr where the cut C of the first ultraviolet ray shielding elastic body 270 and the cut C of the second ultraviolet ray shielding elastic body 280 intersect (see Fig. 10(c)), by further laminating a third ultraviolet ray shielding elastic body having an elastic piece capable of covering the intersection point Cr, the ultraviolet rays emitted by the ultraviolet irradiation lamp 130 can be surely shielded.

[0106] Fig. 11 is a diagram showing an example in which a third ultraviolet ray shielding elastic body having an elastic piece capable of covering the intersection point Cr is further laminated. As shown in Fig. 11, with respect to the cut C (the cut C shown by the solid line) of the ten elastic pieces 271 of the first ultraviolet ray shielding elastic body 270, for example, a third ultraviolet ray shielding elastic body 290 having ten elastic pieces 291 formed by a cut C (the cut C shown by the dashed-dotted line) shifted by 18 degrees is laminated on the first ultraviolet ray shielding elastic body 270. Thereby, since each elastic piece 291 (the elastic piece 291 formed by the cut C shown by the dashed-dotted line) of the third ultraviolet ray shielding elastic body 290 covers the intersection point Cr, the ultraviolet rays emitted by the ultraviolet irradiation lamp 130 can be surely shielded. Incidentally, the center of the space portion 291b of the third ultraviolet ray shielding elastic body 290 is at the same position as the center P1 of the space portion 271b of the first ultraviolet ray shielding elastic body 270.

[0107] Note that the configuration in which the position where the tip portions 271a of the respective elastic pieces 271 of the first ultraviolet ray shielding elastic body 270 gather and the position where the tip portions 281a of the respective elastic pieces 281 of the second ultraviolet ray shielding elastic body 280 gather are located at positions separated along the major axis of the ultraviolet ray shielding elastic bodies 270 and 280 can also be applied to the ultraviolet irradiation device 10A according to Embodiment 1.

[0108] [Embodiment 3] Fig. 12 is a diagram shown for explaining the ultraviolet irradiation device 10C according to Embodiment 3. The ultraviolet irradiation device 10C according to Embodiment 3 is different from the ultraviolet irradiation device 10A according to Embodiment 1 described above in the interval between the first ultraviolet ray shielding elastic body 210 and the second ultraviolet ray shielding elastic body 220 when the first ultraviolet ray shielding elastic body 210 and the second ultraviolet ray shielding elastic body 220 are attached to the frame body 230.

[0109] That is, in the ultraviolet irradiation device 10A according to Embodiment 1, the first ultraviolet light shielding elastic body 210 and the second ultraviolet light shielding elastic body 220 were attached to the frame body 230 in a state of being close to each other. However, in the ultraviolet irradiation device 10C according to Embodiment 3, the first ultraviolet light shielding elastic body 210 and the second ultraviolet light shielding elastic body 220 are attached to the frame body 230 in a state of being separated from each other with a predetermined interval.

[0110] Specifically, the "predetermined interval" here means that when the hand wearing the glove G penetrates through the second ultraviolet light shielding elastic body 220 and the first ultraviolet light shielding elastic body 210, and each elastic piece 221 of the second ultraviolet light shielding elastic body 220 is in a state of being pushed and bent upward, it is preferable that the pushed and bent elastic pieces 221 do not contact or slightly contact the elastic pieces 211 of the first ultraviolet light shielding elastic body 210 (see Fig. 12).

[0111] In the ultraviolet irradiation device 10C according to Embodiment 3, since the interval between the first ultraviolet light shielding elastic body 210 and the second ultraviolet light shielding elastic body 220 is set in this way, when the hand wearing the glove G penetrates through the second ultraviolet light shielding elastic body 220, each elastic piece 221 of the second ultraviolet light shielding elastic body 220 does not contact or slightly contacts the elastic pieces 211 of the first ultraviolet light shielding elastic body 210. For this reason, there is no overlap between each elastic piece 221 of the second ultraviolet light shielding elastic body 220 and each elastic piece 211 of the first ultraviolet light shielding elastic body 210, or even if there is an overlap, the overlapping part is in a narrow range.

[0112] As a result, it becomes difficult for each elastic piece 221 of the second ultraviolet ray shielding elastic body 220 and each elastic piece 211 of the first ultraviolet ray shielding elastic body 210 to interfere with each other. Thereby, for example, it is possible to prevent a situation in which each elastic piece 221 of the second ultraviolet ray shielding elastic body 220 and each elastic piece 211 of the first ultraviolet ray shielding elastic body 210 are in close contact and difficult to separate. As a result, it becomes easy to insert the hand wearing the glove G, and it also becomes easy to pull out the inserted hand (the hand wearing the glove G), and the insertion and removal of the hand wearing the glove G into the sterilization chamber 110 can be smoothly performed.

[0113] Note that the configuration in which the first ultraviolet ray shielding elastic body 210 and the second ultraviolet ray shielding elastic body 220 are attached to the frame body 230 in a state of being separated from each other by a predetermined interval can also be applied to the ultraviolet ray irradiation device 10B according to the second embodiment and a modified example of the ultraviolet ray irradiation device 10B according to the second embodiment.

[0114] [Embodiment of Ultraviolet Ray Shielding Unit] Subsequently, the ultraviolet ray shielding unit of the present invention will be described based on the following embodiments. Here, the ultraviolet ray shielding unit 20 according to the embodiment will be described with reference to FIGS. 2 and 4 used in the description of the ultraviolet ray irradiation device 10A according to the above-described first embodiment.

[0115] As shown in FIGS. 2 and 4, the ultraviolet ray shielding unit 20 according to the embodiment includes a first ultraviolet ray shielding elastic body 210, a second ultraviolet ray shielding elastic body 220, and a frame body 230. The ultraviolet ray shielding unit 20 configured in this way is detachable (attachable and detachable) to the sterilization chamber housing 100.

[0116] In the ultraviolet irradiation device 10A according to the first embodiment, the sterilization chamber housing 100 is provided with a sterilization chamber housing member 170 (see FIGS. 2, 5, and 6). Therefore, the frame body 230 is made detachable from the sterilization chamber housing member 170. In this way, if the frame body 230, which is one of the components of the ultraviolet light shielding unit 20, is made detachable from the sterilization chamber housing member 170, the ultraviolet light shielding unit 20 can be made detachable from the sterilization chamber housing member 170. Note that the fact that the ultraviolet light shielding unit 20 according to the embodiment is detachable from the sterilization chamber housing member 170 means that it is detachable from the sterilization chamber housing 100.

[0117] When attaching the ultraviolet light shielding unit 20 to the sterilization chamber housing member 170, the frame body 230 to which the first ultraviolet light shielding elastic body 210 and the second ultraviolet light shielding elastic body 220 are attached is inserted into the sterilization chamber housing 100 from below the sterilization chamber housing 100, and the frame body 230 is fixed by fixing means (not shown) such as screws. Also, when removing the ultraviolet light shielding unit 20 from the sterilization chamber housing member 170, the fixing means such as screws that fix the frame body 230 are removed, and the ultraviolet light shielding unit 20 is pulled out downward. Thereby, the ultraviolet light shielding unit 20 can be easily attached to and detached from the sterilization chamber housing 100.

[0118] Here, the case where the ultraviolet light shielding unit 20 includes the first ultraviolet light shielding elastic body 210, the second ultraviolet light shielding elastic body 220, and the frame body 230 has been exemplified, but the sterilization chamber housing member 170 can also be included in the ultraviolet light shielding unit 20. In this case, the sterilization chamber housing member 170 may be made detachable from the sterilization chamber housing 100. In this case, the sterilization chamber housing member 170 is provided with a bare skin detection unit 310 as an insertion depth detection unit. Therefore, when the sterilization chamber housing member 170 is removed from the sterilization chamber housing 100, the bare skin detection unit 310 is also removed, but if the bare skin detection unit 310 is made detachable from the sterilization chamber housing member 170, when replacing the ultraviolet light shielding unit 20, the bare skin detection unit 310 can be attached to the sterilization chamber housing member 170 of the new ultraviolet light shielding unit 20.

[0119] As described above, since the ultraviolet light shielding unit 20 is detachable from the sterilization chamber housing 100, when the elastic bodies 210 and 220 for ultraviolet light shielding deteriorate or are damaged, it is possible to replace the entire ultraviolet light shielding unit 20. This facilitates the maintenance of the ultraviolet irradiation device 10A.

[0120] Here, the ultraviolet light shielding unit 20 has been described with reference to FIGS. 2 and 4 used in the description of the ultraviolet irradiation device 10A according to the above-described Embodiment 1. However, also in the ultraviolet irradiation device 10B according to Embodiment 2 and in a modified example of the ultraviolet irradiation device 10B according to Embodiment 2, the ultraviolet light shielding unit 20 can be configured by the first elastic bodies 250 and 270 for ultraviolet light shielding, the second elastic bodies 260 and 280 for ultraviolet light shielding, and the frame body 230. Further, also in the ultraviolet irradiation device 10C according to Embodiment 3, the ultraviolet light shielding unit 20 can be configured by the first elastic body 210 for ultraviolet light shielding, the second elastic body 220 for ultraviolet light shielding, and the frame body 230. Note that in each of the ultraviolet light shielding units 20 of the ultraviolet irradiation device 10B according to Embodiment 2, the modified example of the ultraviolet irradiation device 10B according to Embodiment 2, and the ultraviolet irradiation device 10C according to Embodiment 3, the ultraviolet light shielding unit 20 can include the sterilization chamber housing member 170.

[0121] Also, the above-described ultraviolet light shielding unit 20 was inserted and fixed inside the sterilization chamber housing 100, but the present invention is not limited to this. For example, it may be attached to the lower end of the sterilization chamber housing 100.

[0122] [Embodiment 4] FIG. 13 is a diagram showing the ultraviolet irradiation device 10D according to Embodiment 4 for explanation. FIG. 13 is a cross-sectional view seen from the same viewpoint as FIG. 2. FIG. 14 is a diagram showing the optical path control unit 510 in Embodiment 4 for explanation. It can also be said that FIG. 14 is an enlarged cross-sectional view showing the ultraviolet irradiation lamp 130, the optical path control unit 510, and the reflection member 520 in FIG. 13. The broken line in FIG. 14 indicates the optical path of the ultraviolet light emitted from the ultraviolet irradiation lamp 130.

[0123] The ultraviolet irradiation device 10D according to Embodiment 4 basically has the same configuration as the ultraviolet irradiation device 10A according to Embodiment 1, but is different from the ultraviolet irradiation device 10A according to Embodiment 1 in that it includes an optical path control unit 510 and a reflection member 520 (see FIGS. 13 and 14). Along with this, the ultraviolet irradiation device 10D includes a sterilization chamber housing 102 having a larger internal space (extended in the y-axis direction) than the sterilization chamber housing 100 in Embodiment 1 and a sterilization chamber housing member 172 having a shape corresponding to the sterilization chamber housing 102.

[0124] The optical path control unit 510 is disposed inside the sterilization chamber housing 100 and is a combination of a plurality of optical path control plates 512a to 512e that control the optical path of ultraviolet rays by reflecting or absorbing ultraviolet rays in a louver shape (parallel plate shape). The optical path control unit 510 blocks the ultraviolet rays heading toward the insertion port 120. The optical path control unit 510 is arranged for each ultraviolet irradiation lamp 130 (that is, in a one-to-one correspondence with the ultraviolet irradiation lamp 130). The optical path control plates 512a to 512e are made of members that block ultraviolet rays, such as flat metal plates.

[0125] In the optical path control unit 510, the longer optical path control plates are arranged closer to the insertion port 120 side. In the optical path control unit 510, the longest optical path control plate 512a is arranged closest to the insertion port 120 side (the lower side of the paper in FIGS. 13 and 14), and as the distance from the insertion port 120 increases, the shorter optical path control plates 512b to 512e are arranged in sequence. In the optical path control unit 510, the end portions of the plurality of optical path control plates 512a to 512e on the side far from the ultraviolet irradiation lamp 130 are arranged so as to be aligned on a plane parallel to the direction in which a hand wearing the glove G is inserted (the z-axis direction in the ultraviolet irradiation device 10D in FIG. 13). For this reason, in cross-sectional views such as FIGS. 13 and 14, the ultraviolet irradiation lamp 130 side of the optical path control unit 510 appears to be shifted stepwise.

[0126] In the optical path control unit 510, the surface on the side closer to the insertion port 120 of the optical path control plate 512a arranged on the side closest to the insertion port 120 is configured to absorb ultraviolet rays. Also, in the optical path control unit 510, for the optical path control plates 512b to 512e other than the optical path control plate 512a arranged on the side closest to the insertion port 120, the surface on the side closer to the insertion port 120 is also configured to absorb ultraviolet rays. The said configuration can be realized, for example, by surface treatment or application of a paint containing a substance that absorbs ultraviolet rays. In the ultraviolet irradiation device 10D, an ultraviolet absorption layer 513 is formed on the surface on the side closer to the insertion port 120 of the optical path control plates 512a to 512e. Note that the surfaces of the optical path control plates 512a to 512e on the side farther from the insertion port 120 are configured to reflect ultraviolet rays.

[0127] Due to the presence of the optical path control unit 510, among the ultraviolet rays emitted by the ultraviolet irradiation lamp 130, the ultraviolet rays that do not contact the optical path control plates 512a to 512e (for example, refer to the optical path U1 in FIG. 14) and the ultraviolet rays that contact only the surfaces of the optical path control plates 512a to 512e on the side farther from the insertion port 120 (for example, refer to the optical path U2 in FIG. 14) will be irradiated toward the sterilization chamber 110. On the other hand, the ultraviolet rays emitted by the ultraviolet irradiation lamp 130 toward the insertion port 120 side (for example, refer to the optical path U3 in FIG. 14) are blocked (absorbed by the ultraviolet absorption layer 513) by the optical path control plates 512a to 512e.

[0128] Note that the optical path control unit 510 is not arranged to cover all of the side closer to the hand wearing the glove G of the ultraviolet irradiation lamp 130, and no optical path control plate is arranged in a part on the side farther from the insertion port 120. This is because the ultraviolet rays passing through the position where no optical path control plate is arranged do not directly go toward the insertion port 120. When it is desired to make the directions of irradiating ultraviolet rays more uniform, an additional optical path control plate may be arranged on the side farther from the insertion port 120 of the optical path control plate 512e.

[0129] At the end of the optical path control plates 512a to 512e that is close to the hand wearing the glove G, there is a process or treatment for suppressing damage to the glove G when it comes into contact with the glove G. Examples of such a process or treatment include chamfering and rounding. Also, a paint may be applied for the purpose of reducing friction or the like.

[0130] The reflecting member 520 is disposed inside the sterilization chamber housing 100, and reflects the ultraviolet rays emitted from the ultraviolet irradiation lamp 130 to the opposite side of the corresponding optical path control unit 510 toward the optical path control unit 510 side. The reflecting member 520 has a so-called reflector shape, and reflects the ultraviolet rays emitted from the ultraviolet irradiation lamp 130 toward the opening side (see, for example, the optical path U4 in FIG. 14). In the ultraviolet irradiation device 10D, the reflecting member 520 and the optical path control plate 512a that is closest to the insertion port 120 among the optical path control plates 512a to 512e constituting the optical path control unit 510 are in contact with each other on the insertion port 120 side of the corresponding ultraviolet irradiation lamp 130. Note that the reflecting member 520 and the optical path control plate 512a may be continuous (that is, the reflecting member 520 and the optical path control plate 512a may be a single member). By adopting such a configuration, it is possible to reduce or prevent leakage of ultraviolet rays from between the reflecting member 520 and the optical path control plate 512a. The reflecting member 520 is made of a member capable of reflecting ultraviolet rays, such as a curved metal plate.

[0131] The sterilization chamber housing 102 and the sterilization chamber housing member 172 have the same configuration as the sterilization chamber housing 100 and the sterilization chamber housing member 172 in Embodiment 1 except for the shape, and the difference in shape does not affect the effects of the invention, so detailed descriptions thereof are omitted. Note that the reason for using the sterilization chamber housing 102 with a large internal space in the ultraviolet irradiation device 10D including the optical path control unit 510 is to make the drawings easier to understand. This does not mean that an ultraviolet irradiation device including an optical path control unit is always larger than an ultraviolet irradiation device not including an optical path control unit.

[0132] Note that the ultraviolet irradiation device 10D does not include the protective sheet 131, unlike the ultraviolet irradiation device 10A according to the first embodiment. The ultraviolet irradiation device 10D may include a protective sheet having a shape corresponding to the presence of the optical path control unit 510.

[0133] The ultraviolet irradiation device 10D according to the fourth embodiment is different from the ultraviolet irradiation device 10D according to the first embodiment in that it includes the optical path control unit 510 and the reflection member 520. However, since it includes the ultraviolet-blocking elastic bodies 210 and 220, when the operator W inserts the glove G into the ultraviolet irradiation device 10D, similar to the ultraviolet irradiation device 10A according to the first embodiment, it surely prevents ultraviolet rays from being irradiated outside the ultraviolet irradiation device 10D, resulting in an ultraviolet irradiation device with further improved safety.

[0134] Further, according to the ultraviolet irradiation device 10D according to the fourth embodiment, since it includes the optical path control unit 510 which blocks the ultraviolet rays heading towards the insertion port 120, when the operator W inserts the glove G into the ultraviolet irradiation device 10D, it can more surely prevent ultraviolet rays from being irradiated outside the ultraviolet irradiation device 10D, making it possible to further improve the safety.

[0135] Also, according to the ultraviolet irradiation device 10D according to the fourth embodiment, since the optical path control unit 510 also blocks the ultraviolet rays heading towards the ultraviolet-blocking elastic bodies 210 and 220, it is possible to suppress the deterioration of the ultraviolet-blocking elastic bodies 210 and 220 due to ultraviolet rays.

[0136] Moreover, according to the ultraviolet irradiation device 10D according to the fourth embodiment, since it is arranged for each ultraviolet irradiation lamp 130, even when the number of ultraviolet irradiation lamps 130 is increased to increase the light amount, it is possible to block the ultraviolet rays heading towards the insertion port 120.

[0137] Furthermore, according to the ultraviolet irradiation device 10D according to the fourth embodiment, since the optical path control plates that are longer are arranged closer to the insertion port 120, it is possible to reduce the materials required to configure the optical path control unit 510.

[0138] Further, according to the ultraviolet irradiation device 10D according to Embodiment 4, since the end portions of the plurality of optical path control plates 512a to 512e on the side far from the ultraviolet irradiation lamp 130 are arranged so as to be aligned on a plane parallel to the direction in which the hand wearing the glove G is inserted, it is possible to suppress damage to the glove G when the glove G comes into contact with the plurality of optical path control plates 512a to 512e.

[0139] Further, according to the ultraviolet irradiation device 10D according to Embodiment 4, since the surface of the optical path control plate 512a on the side closer to the insertion port 120, which is arranged on the side closest to the insertion port 120, is configured to absorb ultraviolet rays, it is possible to absorb the ultraviolet rays from the ultraviolet irradiation lamp 130 existing on the insertion port 120 side of the optical path control unit 510.

[0140] Further, according to the ultraviolet irradiation device 10D according to Embodiment 4, for the optical path control plates 512b to 512e other than the optical path control plate 512a as well, since the surface on the side closer to the insertion port 120 is configured to absorb ultraviolet rays, it is possible to absorb the ultraviolet rays that may be directed toward the insertion port 120 among the ultraviolet rays passing through the optical path control unit 510.

[0141] Further, according to the ultraviolet irradiation device 10D according to Embodiment 4, since it further includes a reflection member 520, it is possible to reduce the ultraviolet rays that are wasted.

[0142] Further, according to the ultraviolet irradiation device 10D according to Embodiment 4, since the end portions of the optical path control plates 512a to 512e on the side close to the hand wearing the glove G are processed or treated to suppress damage to the glove G when it comes into contact with the glove G, it is possible to suppress damage to the glove G when the glove G comes into contact with the plurality of optical path control plates 512a to 512e.

[0143] Note that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention. For example, the following modifications can also be made.

[0144] (1) At the terminal end of the cut C of each ultraviolet ray-shielding elastic body in each of the above-described embodiments (for example, the end portion on the peripheral edge side of each ultraviolet ray-shielding elastic body), a space portion (for example, the space portions 211b and 221b in Embodiment 1) may be formed so that a slight constriction is formed at the root side end portion (the end portion on the side opposite to the tip end portion that becomes the free end) of the elastic piece formed between the cuts C. Here, the first ultraviolet ray-shielding elastic body 210 will be described as an example.

[0145] FIG. 15 is a view showing an example in which a slight constriction is formed at the root side end portion (the end portion on the side opposite to each tip end portion 211a that becomes the free end) of each elastic piece 211 formed between the cuts C. In the example shown in FIG. 15, a circular space portion 216 is formed at the terminal end of the cut C of the ultraviolet ray-shielding elastic body 210 (the end portion on the peripheral edge 210a side of the ultraviolet ray-shielding elastic body 210). As a result, a slight constriction is formed at the root side end portion (the end portion on the side opposite to the tip end portion 211a that becomes the free end) of each elastic piece 211 formed between the cuts C. Note that the shape of the space portion 216 is not limited to a circular shape, and can be various shapes such as an elliptical shape and a quadrangular shape. The shape and size of the space portion are preferably such that the space portions are unlikely to overlap when the ultraviolet ray-shielding elastic bodies are laminated.

[0146] As shown in FIG. 15, by forming a slight constriction at the root side end portion (the end portion on the side opposite to the tip end portion 211a that becomes the free end) of each elastic piece 211 formed between the cuts C, each elastic piece 211 becomes more easily bendable. As a result, when inserting and piercing through the hand wearing the glove G, the piercing of the hand wearing the glove G becomes easy, and the pulling out of the pierced hand (the hand wearing the glove G) also becomes easy.

[0147] In FIG. 15, the first ultraviolet ray-shielding elastic body 210 has been described as an example, but the second ultraviolet ray-shielding elastic body 220 can be similarly implemented. Also, the first ultraviolet ray-shielding elastic bodies 250 and 270 and the second ultraviolet ray-shielding elastic bodies 260 and 280 used in Embodiment 2 and its modified examples can be similarly implemented.

[0148] (2) In each of the above embodiments, the plurality of cuts C formed in each ultraviolet light-shielding elastic body are straight cuts, but they are not limited to being straight, and may be curved. Also, in each of the above embodiments, the number of cuts was 10, but it is not limited to 10, and the angle between adjacent cuts is not necessarily constant. These will be described below as modified examples of the cut C.

[0149] FIG. 16 is shown for explaining a modified example of the cut C. FIGS. 16(a) and 16(b) are diagrams showing an example when the cut C is a curve, FIG. 16(c) is a diagram showing the case when the number of cuts C is other than 10 (for example, 14), and FIG. 16(d) illustrates the case where the angle between adjacent cuts C is not constant. In FIG. 16, the cut C of the first ultraviolet light-shielding elastic body 210 is illustrated, but the same can be implemented for the second ultraviolet light-shielding elastic body 220. Also, the same can be implemented for the first ultraviolet light-shielding elastic bodies 250 and 270 and the second ultraviolet light-shielding elastic bodies 260 and 280 used in Embodiment 2 and its modified examples.

[0150] Note that FIGS. 16(a) and 16(b) show that the cut C is a curve. In this way, even when the cut C is a curve, it is included in the "plurality of cuts formed along a line extending radially from a predetermined position of the ultraviolet light-shielding elastic body toward the peripheral edge of the ultraviolet light-shielding elastic body".

[0151] Even if the cut C formed in each ultraviolet light-shielding elastic body is the cut C shown in FIGS. 16(a) to 16(d), the ultraviolet irradiation device described in each of the above embodiments can be configured. Note that the ultraviolet light-shielding elastic bodies having the cuts C shown in FIGS. 16(a) to 16(d) may be appropriately combined and used.

[0152] (3) In each of the above embodiments, the case where a space portion surrounded by the respective tip portions is formed at the position where the respective tip portions of the respective elastic pieces of each ultraviolet light shielding elastic body are gathered has been exemplified, but the space portion may not be formed.

[0153] For example, regarding the first ultraviolet light shielding elastic body 210, a space portion 211b surrounded by the respective tip portions 211a is formed at the position where the respective tip portions 211a of the respective elastic pieces 211 of the first ultraviolet light shielding elastic body 210 are gathered, but the space portion 211b may not be formed. That is, the position where the tip portions 211a of the respective elastic pieces 211 are gathered may be the center Po of the ultraviolet light shielding elastic body 210. This can be similarly implemented in the second ultraviolet light shielding elastic body 220. Further, it can be similarly implemented in the first ultraviolet light shielding elastic bodies 250 and 270 and the second ultraviolet light shielding elastic bodies 260 and 280 used in Embodiment 2 and its modified examples.

[0154] (4) In each of the above embodiments, the case where the plate surfaces of the ultraviolet light shielding elastic bodies 210, 220, 250, 260, 270, 280 are smooth surfaces has been exemplified, but unevenness may exist on the plate surfaces. In particular, when laminating in a state where two ultraviolet light shielding elastic bodies are in contact, unevenness on the plate surfaces (mainly the plate surfaces of the respective elastic pieces) of each ultraviolet light shielding elastic body can prevent problems such as the two ultraviolet light shielding elastic bodies adhering tightly and being difficult to separate.

[0155] That is, if the plate surfaces of two ultraviolet light shielding elastic bodies (for example, the first ultraviolet light shielding elastic body 210 and the second ultraviolet light shielding elastic body 220) are smooth surfaces, depending on the material of the ultraviolet light shielding elastic body, when the first ultraviolet light shielding elastic body 210 and the second ultraviolet light shielding elastic body 220 are laminated in a contact state, the first ultraviolet light shielding elastic body 210 and the second ultraviolet light shielding elastic body 220 may adhere tightly and be difficult to separate.

[0156] When the first ultraviolet-ray shielding elastic body 210 and the second ultraviolet-ray shielding elastic body 220 are in close contact and difficult to separate, there may be a problem that the piercing operation when piercing the hand wearing the glove G and the pulling operation when pulling out the pierced hand (the hand wearing the glove G) cannot be performed smoothly. However, the presence of unevenness on the plate surface of at least one of the ultraviolet-ray shielding elastic bodies can prevent the occurrence of such problems. The unevenness present on the plate surface is not particularly limited, and examples thereof include a plurality of fine protrusions and corrugated unevenness.

[0157] (5) In each of the above embodiments, the ultraviolet-ray shielding elastic body is exemplified by the case of using two ultraviolet-ray shielding elastic bodies, i.e., the first ultraviolet-ray shielding elastic body (for example, the first ultraviolet-ray shielding elastic body 210) and the second ultraviolet-ray shielding elastic body (for example, the second ultraviolet-ray shielding elastic body 220). However, the number of ultraviolet-ray shielding elastic bodies is not limited to two, and three or more may be used.

[0158] When the number of ultraviolet-ray shielding elastic bodies is three or more, when three or more ultraviolet-ray shielding elastic bodies are stacked, at least one of the cuts of at least one of the three or more ultraviolet-ray shielding elastic bodies has a "shift" along the plate surface of each ultraviolet-ray shielding elastic body with respect to the plurality of cuts of the other ultraviolet-ray shielding elastic bodies, and is attached to the frame body.

[0159] Thus, in the ultraviolet-ray irradiation device of the present invention, each ultraviolet-ray shielding elastic body attached to the frame body is attached to the frame body such that a plurality of cuts formed in at least one of the ultraviolet-ray shielding elastic bodies have a "shift" along the plate surface of each ultraviolet-ray shielding elastic body with respect to the plurality of cuts of the other ultraviolet-ray shielding elastic bodies. It is more preferable that the cuts of all the ultraviolet-ray shielding elastic bodies of three or more ultraviolet-ray shielding elastic bodies have a "shift" along the plate surface of each ultraviolet-ray shielding elastic body and are attached to the frame body.

[0160] (6) The insertion depth detection unit that detects that the hand wearing the glove G has been inserted to a predetermined depth in the sterilization chamber 110 was the bare skin detection unit 310 in each of the above embodiments, but is not limited thereto. For example, when an operator identifier for identifying individual operators is attached to the gloves used by individual operators, an operator identifier detection unit that detects the operator identifier can also be used as the insertion depth detection unit. In addition to these, various modifications of the insertion depth detection unit are possible. Modification examples of the insertion depth detection unit are shown in (a) to (d) below.

[0161] (a) In the first modification example of the insertion depth detection unit, an insertion restricting unit (not shown) that restricts the insertion depth of the hand wearing the glove G is provided in the sterilization chamber 110, and a touch sensor is provided in the insertion restricting unit. Then, a touch sensor detects that a predetermined portion (for example, the tip of any one of the five fingers or the crotch formed between two adjacent fingers) of the hand wearing the glove G has touched the insertion restricting unit, and outputs an insertion depth detection signal.

[0162] (b) In the second modification example of the insertion depth detection unit, a camera (not shown) is installed in the sterilization chamber 110, and when the hand wearing the glove G is inserted into the sterilization chamber 110, the hand wearing the glove G is photographed by the camera. Then, based on the photographed image taken by the camera, it is detected that the hand wearing the glove G has been inserted to a predetermined depth in the sterilization chamber 110, and an insertion depth detection signal is output.

[0163] (c) In the third modification example of the insertion depth detection unit, a light emitting element and a light receiving element (not shown) are arranged opposite to each other at a predetermined position in the sterilization chamber 110. Then, based on the signal from the light receiving element, it is detected that a predetermined portion (for example, the tip of any one of the five fingers) of the hand wearing the glove G has blocked the light from the light emitting element, and an insertion depth detection signal indicating that the hand wearing the glove G has been inserted to a predetermined depth in the sterilization chamber 110 is output.

[0164] (d) In Embodiment 1, it is also possible to selectively combine the bare skin detection unit 310 described above, the operator identifier detection unit, the first modification of the insertion depth detection unit in (a) above, the second modification of the insertion depth detection unit in (b) above, and the third modification of the insertion depth detection unit in (c) above.

[0165] (7) In each of the above embodiments, the glove G has been described as a short type of glove that covers from the fingertips to the wrist of the operator W, but it is not limited to this, and it may be a long type of glove that can cover from the fingertips of the operator W to a portion near the elbow. Also, the glove G and the arm cover may be used in combination. When the glove G and the arm cover are used in combination, at least one of the operator identifier detection unit and the insertion depth detection units shown in (a) to (c) described in (7) above may be used.

[0166] (8) Each of the ultraviolet irradiation devices 10A, 10B (including modifications), 10C, 10D shown in each of the above embodiments was of a type in which the hand wearing the glove G is inserted into the sterilization chamber 110 from below upward. However, like the ultraviolet irradiation device described in the background art section above (see FIG. 19), it may be of a type in which the hand wearing the glove G is inserted from above downward. Also, although not shown, it may be an ultraviolet irradiation device of a type in which the hand wearing the glove G is inserted in an obliquely upward direction, an obliquely downward direction, or a horizontal direction.

[0167] (9) In the ultraviolet irradiation device 10D shown in the above-described Embodiment 4, the plurality of optical path control plates 512a to 512e in the optical path control unit 510 are arranged such that the ends on the side far from the ultraviolet irradiation lamp 130 are aligned on a plane parallel to the direction in which the hand wearing the glove G is inserted. However, the present invention is not limited to this. FIG. 17 is a diagram (a cross-sectional view corresponding to FIG. 13) shown for explaining the ultraviolet irradiation device 10E according to Modification 1. In the optical path control unit 530 of the ultraviolet irradiation device 10E, the plurality of the optical path control plates (reference signs not shown) are arranged such that the ends on the side close to the ultraviolet irradiation lamp 130 are aligned on a plane perpendicular to the main surface of the optical path control plate. Therefore, in a cross-sectional view as shown in FIG. 17, the side of the optical path control unit 530 opposite to the ultraviolet irradiation lamp 130 appears to be stepped. Note that the "main surface of the optical path control plate" in this specification refers to the surface having the largest area among the surfaces of the optical path control plate. By adopting such a configuration, it is possible to facilitate the control of the optical path by bringing the optical path control plate and the ultraviolet irradiation lamp 130 closer to each other as a whole.

[0168] (10) The orientations of the optical path control units 510 and 530 and the reflecting member 520 in the above-described Embodiment 4 and Modification 1 are examples. FIG. 18 is a diagram (a cross-sectional view corresponding to FIG. 13) shown for explaining the ultraviolet irradiation device 10F according to Modification 2. For example, as shown in FIG. 18, the optical path control unit and the reflecting member may be inclined and arranged on the side opposite to the insertion port. Further, the orientations of the optical path control unit and the reflecting member may be different for each corresponding ultraviolet irradiation unit.

[0169] (11) In the above-described Embodiment 1, the control for preheating before turning on the ultraviolet irradiation lamp 130 has been described, but the present invention is not limited thereto. For example, the ultraviolet irradiation device according to the present invention further includes a human presence sensor that detects the presence of a human around, and a sterilization chamber sensor that detects that gloves have been inserted into the sterilization chamber. When the human presence sensor does not detect the presence of a human, ultraviolet rays are irradiated onto the sterilization chamber. When the human presence sensor detects the presence of a human and the sterilization chamber sensor does not detect that gloves have been inserted into the sterilization chamber, the irradiation of ultraviolet rays onto the sterilization chamber is interrupted. When the human presence sensor detects the presence of a human and the sterilization chamber sensor detects that the gloves have been inserted into the sterilization chamber, it is also preferable to resume the irradiation of ultraviolet rays onto the sterilization chamber. Note that, as the human presence sensor, the same one as the operator detection unit in Embodiment 1 (for example, an infrared sensor) can be used, and as the sterilization chamber sensor, the same one as the bare skin detection unit 310 in Embodiment 1 or the insertion depth detection unit described in the above (6) (for example, an infrared sensor or a camera) can be used, respectively. By adopting such a configuration, it is possible to increase safety and irradiate sufficient ultraviolet rays immediately after inserting the gloves.

[0170] (12) In the above-described embodiments and each modification, the ultraviolet irradiation unit, that is, the ultraviolet irradiation lamp 130 has been described as a mercury lamp, but of course this is merely an example. The ultraviolet irradiation unit may be any device that can emit ultraviolet rays, for example, it may be an ultraviolet light-emitting diode (UV LED).

[0171] (13) The shape of the reflecting member 520 in the ultraviolet irradiation devices 10D, 10E, and 10F according to the above-described Embodiment 4 and Modifications 1 and 2 is merely an example, and the present invention is not limited thereto. The reflecting member may have a shape other than the so-called reflector shape (for example, a flat plate shape). Further, the ultraviolet irradiation device of the present invention may not include a reflecting member even when it includes an optical path control unit.

Explanation of Reference Numerals

[0172] 10A, 10B, 10C, 10D, 10E, 10F ··· UV irradiation device, 20 ··· UV light shielding unit, 100, 102 ··· sterilization chamber housing, 110 ··· sterilization chamber, 120 ··· insertion port, 120a ··· peripheral edge of the insertion port 120, 130 ··· UV irradiation lamp (UV irradiation unit), 131 ··· protective sheet, 150 ··· display unit, 160 ··· support column, 170, 172 ··· sterilization chamber housing members, 210, 250, 270 ··· first UV light shielding elastic body, 210a, 250a, 270a ··· peripheral edge of the first UV light shielding elastic body, 220, 260, 280 ··· second UV light shielding elastic body, 220a, 260a, 280a ··· peripheral edge of the second UV light shielding elastic body, 211, 222, 251, 261, 271, 281, 291 ··· elastic pieces, 211a, 221a, 251a, 261a, 271a, 281a ··· tip portions (free ends), 211b, 221b, 251b, 261b, 271b, 281b ··· space portions (space portions formed at positions where the tip portions of the respective elastic pieces converge), 230 ··· frame body, 231, 232 ··· receiving grooves, 290 ··· third UV light shielding elastic body, 310 ··· bare skin detection unit (insertion depth detection unit), 400 ··· control device, 510, 530 ··· optical path control unit, 512a, 512b, 512c, 512d, 512e ··· optical path control plates, 513 ··· UV absorption layer, C ··· cut, Cr ··· intersection point, G ··· glove, Ga ··· wrist portion of the glove G, ID ··· operator identifier, W ··· operator, Wa ··· bare skin area

Claims

1. An ultraviolet irradiation device that irradiates ultraviolet rays onto gloves made of an ultraviolet non-permeable material worn on an operator's hand to sterilize the surface of the gloves, It consists of an ultraviolet light shielding member that shields the ultraviolet rays, has a sterilization chamber inside, and a sterilization chamber housing having an insertion port for inserting the hand wearing the gloves into the sterilization chamber, An ultraviolet irradiation unit disposed inside the sterilization chamber housing for irradiating the sterilization chamber with ultraviolet rays, It is a thin plate-like member having ultraviolet non-permeability and elasticity, provided so as to cross the insertion direction when inserting the hand wearing the gloves from the insertion port into the sterilization chamber, and is an ultraviolet light shielding elastic body through which the hand wearing the gloves can pass through, A frame provided along the peripheral edge of the insertion port, and the ultraviolet light shielding elastic bodies are attached by supporting the peripheral edges of the respective ultraviolet light shielding elastic bodies in a state where a plurality of the ultraviolet light shielding elastic bodies are laminated, and comprises, The ultraviolet light shielding elastic body, A plurality of cuts are formed along a plurality of lines radially extending from a predetermined position on the plate surface of the ultraviolet light shielding elastic body toward the peripheral edge of the ultraviolet light shielding elastic body. Between each of the plurality of cuts, a plurality of elastic pieces are formed, where the tip portion located on the side of the predetermined position is a free end that is free to move in the front-back direction of the ultraviolet light shielding elastic body, Each ultraviolet light shielding elastic body attached to the frame is attached to the frame such that the plurality of cuts formed in at least one of the ultraviolet light shielding elastic bodies have a "shift" along the plate surface with respect to the plurality of cuts of the other ultraviolet light shielding elastic bodies. An ultraviolet irradiation device characterized by this.

2. In the ultraviolet irradiation device according to Claim 1, Each ultraviolet light shielding elastic body attached to the frame is composed of ultraviolet light shielding elastic bodies in which the same number of cuts are formed. An ultraviolet irradiation device characterized by this.

3. In the ultraviolet irradiation device according to claim 1, Among the elastic bodies for ultraviolet light shielding attached to the frame body, there is an elastic body for ultraviolet light shielding in which different numbers of cuts are formed. The ultraviolet irradiation device is characterized by this.

4. In the ultraviolet irradiation device according to any one of claims 1 to 3, Each elastic body for ultraviolet light shielding attached to the frame body is composed of an elastic body for ultraviolet light shielding in which the positions where the tip portions of the plurality of elastic pieces formed in each elastic body for ultraviolet light shielding gather are present at the same position in each elastic body for ultraviolet light shielding. The ultraviolet irradiation device is characterized by this.

5. In the ultraviolet irradiation device according to any one of claims 1 to 3, Among the elastic bodies for ultraviolet light shielding attached to the frame body, there is an elastic body for ultraviolet light shielding in which the positions where the tip portions of the plurality of elastic pieces formed in each elastic body for ultraviolet light shielding gather are present at positions radially separated in each elastic body for ultraviolet light shielding. The ultraviolet irradiation device is characterized by this.

6. In the ultraviolet irradiation device according to any one of claims 1 to 5, On the plate surface of at least one of the elastic bodies for ultraviolet light shielding that face each other among the elastic bodies for ultraviolet light shielding attached to the frame body, irregularities are present. The ultraviolet irradiation device is characterized by this.

7. In the ultraviolet irradiation device according to any one of claims 1 to 6, Each elastic body for ultraviolet light shielding attached to the frame body is laminated in a state where the elastic bodies are close to each other or in contact with each other. The ultraviolet irradiation device is characterized by this.

8. In the ultraviolet irradiation device according to any one of claims 1 to 6, Each elastic body for ultraviolet light shielding attached to the frame body is laminated in a state where the elastic bodies are separated from each other at a predetermined interval. The ultraviolet irradiation device is characterized by this.

9. In the ultraviolet irradiation device according to any one of claims 1 to 8, An ultraviolet irradiation device, characterized in that a space portion surrounded by the tip portions is formed at the positions of the tip portions of the plurality of elastic pieces.

10. In the ultraviolet irradiation device according to any one of claims 1 to 9, An ultraviolet irradiation device, characterized in that the frame has antibacterial properties.

11. In the ultraviolet irradiation device according to any one of claims 1 to 10, Further provided with an optical path control unit in which a plurality of optical path control plates that control the optical path of ultraviolet rays by reflecting or absorbing ultraviolet rays are combined in a louver shape and arranged inside the sterilization chamber housing, The ultraviolet irradiation device, characterized in that the optical path control unit blocks ultraviolet rays heading toward the insertion port.

12. In the ultraviolet irradiation device according to claim 11, The ultraviolet irradiation device includes a plurality of the ultraviolet irradiation units, The ultraviolet irradiation device, characterized in that the optical path control unit is arranged for each of the ultraviolet irradiation units.

13. In the ultraviolet irradiation device according to claim 12, In the optical path control unit, the optical path control plate that is longer toward the side closer to the insertion port is arranged. The ultraviolet irradiation device is characterized by this.

14. In the ultraviolet irradiation device according to claim 13, In the optical path control unit, the plurality of optical path control plates are arranged such that the ends on the side far from the ultraviolet irradiation unit are aligned on a plane parallel to the direction in which the hand wearing the glove is inserted. The ultraviolet irradiation device is characterized by this.

15. In the ultraviolet irradiation device according to any one of claims 12 to 14, The ultraviolet irradiation device is characterized in that, in the optical path control unit, at least one surface of the optical path control plate near the insertion port is configured to absorb ultraviolet rays.

16. In the ultraviolet irradiation device according to any one of Claims 12 to 15, the ultraviolet irradiation device is disposed inside the sterilization chamber housing, and further includes a reflection member for reflecting ultraviolet rays emitted from the ultraviolet irradiation unit to the opposite side of the corresponding optical path control unit toward the optical path control unit side.

17. In the ultraviolet irradiation device according to any one of Claims 11 to 16, at an end of the optical path control plate on the side close to the hand wearing the glove, processing or treatment is performed to suppress damage to the glove when it comes into contact with the glove.

18. In the ultraviolet irradiation device according to any one of Claims 1 to 17, the ultraviolet irradiation device further includes a human presence sensor for detecting the presence of a human around, and a sterilization chamber sensor for detecting that the glove has been inserted into the sterilization chamber, when the human presence sensor does not detect the presence of a human, the sterilization chamber is irradiated with ultraviolet rays, when the human presence sensor detects the presence of a human and the sterilization chamber sensor does not detect that the glove has been inserted into the sterilization chamber, the irradiation of ultraviolet rays to the sterilization chamber is interrupted, when the human presence sensor detects the presence of a human and the sterilization chamber sensor detects that the glove has been inserted into the sterilization chamber, the irradiation of ultraviolet rays to the sterilization chamber is resumed.

19. An ultraviolet light shielding unit that is detachably attached to a sterilization chamber housing of an ultraviolet irradiation device that irradiates ultraviolet light to sterilize the surface of gloves made of an ultraviolet light non-permeable material worn on the operator's hand, and prevents the ultraviolet light from being irradiated outside the ultraviolet irradiation device when the operator inserts the gloves into the ultraviolet irradiation device. The ultraviolet irradiation device Comprises an ultraviolet light shielding member that shields the ultraviolet light, a sterilization chamber housing that has a sterilization chamber inside and an insertion port for inserting the hand wearing the gloves into the sterilization chamber, An ultraviolet irradiation unit disposed inside the sterilization chamber housing for irradiating the sterilization chamber with ultraviolet light, And is provided with The ultraviolet light shielding unit Is made of a thin plate-like member having ultraviolet light non-permeability and elasticity, and is provided so as to cross the insertion direction when inserting the hand wearing the gloves into the sterilization chamber from the insertion port. It is an ultraviolet light shielding elastic body through which the hand wearing the gloves G can pass through. A frame body provided along the peripheral edge of the insertion port, and each ultraviolet light shielding elastic body is attached by supporting the peripheral edge of each ultraviolet light shielding elastic body in a state where a plurality of the ultraviolet light shielding elastic bodies are laminated. And is provided with The ultraviolet light shielding elastic body A plurality of cuts are formed along a plurality of lines radially extending from a predetermined position on the plate surface of the ultraviolet light shielding elastic body toward the peripheral edge of the ultraviolet light shielding elastic body. Between each of the plurality of cuts, a plurality of elastic pieces are formed, and the tip portion located on the side of the predetermined position is a free end that can freely move in the front and back directions of the ultraviolet light shielding elastic body. Each ultraviolet light shielding elastic body attached to the frame body is attached to the frame body such that the plurality of cuts formed in at least one of the ultraviolet light shielding elastic bodies have a "shift" along the plate surface with respect to the plurality of cuts of the other ultraviolet light shielding elastic bodies. The ultraviolet light shielding unit is characterized by this.

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