JP7410322B2 - passenger conveyor - Google Patents

Description

The present invention relates to passenger conveyors such as escalators and moving walkways, and more particularly to sterilization of moving handrails. Here, there is a concept that "sterilization" excludes viruses, but in this specification, "sterilization" does not exclude viruses from its target.

As background technology in this technical field, a handrail belt sterilizer described in Japanese Patent Application Publication No. 2019-52021 (Patent Document 1) is known. The handrail belt sterilizing device of Patent Document 1 is provided inside a skirt guard of a passenger conveyor, and includes a sterilizing section that sterilizes the surface of the handrail belt running inside the skirt guard, and a notification that notifies information based on the sterilization performed by the sterilizing section. a control unit that acquires operation speed information of the passenger conveyor and controls sterilization by the sterilization unit and notification by the notification unit for each operation speed, and a timer that acquires a time based on sterilization by the sterilization unit. (See summary). Further, Patent Document 1 describes that the sterilization section includes a deep ultraviolet LED module, and the deep ultraviolet LED module performs sterilization by irradiating the surface of the handrail belt with ultraviolet light (see paragraph 0019). Further, in Patent Document 1, in addition to a sterilization unit that irradiates the surface of the handrail belt (the surface on which passengers place their hands) with ultraviolet rays, a sterilization unit that irradiates ultraviolet rays is provided on both sides of the handrail belt, and three sterilization units are provided. It is stated that it may be arranged so as to surround the handrail belt (see paragraph 0027 and FIG. 3).

JP 2019-52021 Publication

In the handrail belt sterilization device of Patent Document 1, in addition to the position facing the surface of the moving handrail, so that the ultraviolet rays are directly irradiated from the deep ultraviolet LED module to the surface and both sides of the handrail belt (hereinafter referred to as moving handrail). , deep ultraviolet LED modules are arranged at two opposing positions on each side. In this case, a large space is required around the moving handrail in which to arrange the deep ultraviolet LED module. In the present invention, the light source is not limited to a deep ultraviolet LED, but will be described as an ultraviolet light emitting unit that emits ultraviolet light.

An object of the present invention is to arrange an ultraviolet light emitting unit in a small space around a movable handrail and to be able to irradiate a wide range of the movable handrail with ultraviolet light.

In order to achieve the above object, the passenger conveyor of the present invention includes:
A step board that is driven in circulation, a movable handrail that is disposed on the side of the step board and is driven in circulation , and a sterilization device that sterilizes the movable handrail ,
The sterilization device includes an ultraviolet light emitting part that emits ultraviolet light, a support that supports the ultraviolet light emitting part, and a reflective surface that reflects the ultraviolet light,
The ultraviolet light emitting unit is arranged at a position facing the upper surface of the moving handrail,
The support body has one side as a support surface that faces the upper surface of the movable handrail and supports the ultraviolet light emitting part, and extends from both ends of the support surface in the width direction of the movable handrail to both sides of the movable handrail. and another side part provided with the
In the passenger conveyor , the reflective surface is provided on the other side surface of the support and is disposed on the side of the moving handrail,
When the support surface is the first side surface, the support body includes a second side surface,
a second side surface extending from the first side surface in a direction perpendicular to the top surface of the moving handrail;
The second side surface is connected to the end opposite to the first side surface, and the end opposite to the second side surface moves more than the side surface of the movable handrail. a third side portion located on the center side in the width direction of the handrail and extending to wrap around below the movable handrail;
a fourth side surface connected to an end of the third side surface opposite to the second side surface and extending to a side opposite to the third side surface;
The two fourth side parts provided separately at both ends of the first side face in the width direction of the movable handrail are arranged such that the end opposite to the third side face has a gap. is,
The size of the gap is larger than the distance between the upper surface and the lower surface of the moving handrail .

According to the present invention, it is possible to arrange the ultraviolet light emitting unit in a small space around the movable handrail and to be able to irradiate a wide range of the movable handrail with ultraviolet light. Thereby, the degree of freedom in designing the passenger conveyor can be improved.

Problems, configurations, and effects other than those described above will be made clear by the following description of the embodiments.

1 is a side view schematically showing the structure of an embodiment of a passenger conveyor according to the present invention. FIG. 2 is a side view showing the vicinity of a step drive device and a moving handrail drive device for a passenger conveyor according to the present invention. It is a figure which shows the cross section (width direction cross section) perpendicular|vertical to the moving direction of a moving handrail. It is a figure which shows a sterilization device, and is a figure which shows the cross section (width direction cross section) perpendicular|vertical to the moving direction of a moving handrail. It is a figure which shows a sterilization device, and is a figure which shows the cross section perpendicular|vertical to the width direction (movement direction cross section) of a moving handrail. It is a figure which shows an example of the irradiation state of ultraviolet rays to the moving handrail in the sterilization apparatus of a present Example. It is a figure which shows the example of a change of a sterilization apparatus, and is a figure which shows the cross section (width direction cross section) perpendicular|vertical to the moving direction of a moving handrail. 4A is an enlarged cross-sectional view in the width direction of the side surface 102Sa of the moving rail 102 in FIG. 4A. FIG.

An embodiment of the passenger conveyor according to the present invention will be described below.

The passenger conveyor of this embodiment includes an escalator installed between different floors and a moving walkway installed horizontally or with a gentle inclination angle. There are some differences in the names of the components of escalators and moving walkways. For example, the "steps" of an escalator are called "pallets" on a moving walkway. In this embodiment, the "steps" of the escalator and the "pallets" of the moving walkway will be referred to as "treadboards" for explanation.

An escalator will be described below as an example of a passenger conveyor. If there is a difference in the names of components other than treads between the escalator and the moving walkway, the names for the escalator will be adopted and explained.

The configuration of the passenger conveyor 100 according to this embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view schematically showing the structure of an embodiment of a passenger conveyor 100 according to the present invention. FIG. 2 is a side view showing the vicinity of the step drive device and the handrail drive device 12 of the passenger conveyor 100 according to the present invention.

In FIG. 1, a passenger conveyor 100 is provided with a plurality of step boards 101 that are connected in an endless manner and are driven to circulate between two entrances and exits 140 and 150. A movable handrail 102 is provided on the side of the footboard 101 (on both the left and right sides) and is driven to circulate. The movable handrail 102 is supported by balustrades 103 placed on the sides (on both left and right sides) of the footboard 101. The handrail 103 is erected on skirt guards 116 arranged on both the left and right sides of the footboard 101. When used by passengers, the footboard 101 and the moving handrail 102 move in synchronization.

In the moving direction (running direction) of the footboard 101, entrances and exits 140 and 150 are provided at both ends of the passenger conveyor 100. A device for driving the step board 101 and the movable handrail 102 is housed below the entrance/exit 140, 150, and the entrance/exit floorboards 104, 105 cover the upper part thereof. During descending operation, the step board 101 and the moving handrail 102 move from the entrance/exit 140 to the entrance/exit 150 while being exposed to the movement path. In this case, the entrance/exit 140 becomes a boarding entrance, and the entrance/exit 50 becomes an exit. During ascending operation, the treadle 101 and the moving handrail 102 move from the entrance/exit 150 to the entrance/exit 140 while being exposed to the movement path. In this case, the entrance/exit 150 becomes a boarding entrance, and the entrance/exit 140 becomes an exit.

In this embodiment, since the passenger conveyor 100 is explained using an escalator as an example, the entrance/exit 140 is configured as an upper entrance, and the entrance/exit 150 is configured as a lower entrance/exit. Furthermore, in the movable handrail 102, the side that moves while being exposed to the passenger passageway will be referred to as the outbound side movable handrail 102A, and the side that moves hidden inside the skirt guard 116 will be referred to as the return side movable handrail 102B. . In addition, in FIG. 1, a part of the return side moving handrail 102B is shown by a broken line.

Furthermore, a chain 106 that connects the footboard 101 endlessly is wound around sprockets 107 and 108. Furthermore, a tread drive device 111 having a tread motor 109 and a speed reducer 110 is provided at the bottom of the entrance/exit floorboard 104 . The tread drive device 111 drives the sprocket 108 via the drive chain 112, thereby driving the chain 106 and the tread 101.

The speed of the treadle 101 is constantly monitored by a treadle speed detection device 101a (see FIG. 2). The treadle speed detection device 101a can be configured, for example, by a rotary encoder attached to the shaft of the speed reducer 110. Speed information of the treadle 101 detected by the treadle speed detection device 101a is sent to the control device 113.

As shown in FIG. 2, a movable handrail drive device 115 including a movable handrail motor 114 is provided, and the movable handrail motor 114 is driven to cause the movable handrail drive device 115 to drive the movable handrail 102. In this embodiment, the movable handrail motor 114 is provided separately from the stepboard motor 109.

The handrail drive device 115 includes a handrail motor 114, a speed reducer 115a, a handrail drive chain 115b, a handrail drive roller 115c, and a pressure roller 115d. The movable handrail drive roller 15c and the pressure roller 15d are placed opposite to each other with the movable handrail 102 in between. The driving force by the moving handrail motor 114 is transmitted to the moving handrail drive roller 115c via the speed reducer 115a and the moving handrail drive chain 115b. The movable handrail 102 is driven by receiving the driving force from the movable handrail drive roller 115c.

The speed of the moving handrail 102 is constantly monitored by the moving handrail speed detection device 102a. The moving handrail speed detection device 102a is, for example, installed at a position adjacent to the moving handrail drive device 15, and includes a roller and an encoder that are in contact with the moving handrail 102. The speed of the moving handrail 102 is detected by detecting the rotation speed (rotation speed) of the roller. Speed information of the moving handrail 102 detected by the moving handrail speed detection device 102a is sent to the control device 113 (see FIG. 1).

The control device 113 of the passenger conveyor 100 uses the tread drive device 111 and the moving handrail drive device 115 to move the tread board based on the tread speed and the moving handrail speed detected by the tread speed detection device 101a and the moving handrail speed detection device 102a. 101 and the movable handrail 102 are controlled.

As shown in FIG. 1, the passenger conveyor 100 of this embodiment includes a sterilization device 10 that sterilizes a moving handrail 102. The sterilization device 10 is applied on the return side (moving handrail 102B) of the moving path of the moving handrail 102. For this purpose, the sterilization device 10 is arranged inside the skirt guard 116.

As shown in FIG. 2, the return side moving handrail 102B is a part of the moving handrail drive device 115 and the moving handrail speed detection device 102a, and the arrangement of the sterilization device 10 is restricted by each device. Therefore, the sterilization device 10 is arranged to avoid interference with the moving handrail drive device 115 and the moving handrail speed detection device 102a.

There is a concept that "sterilization" excludes viruses, but in this specification, "sterilization" does not exclude viruses from its target. The sterilization device 10 includes deep ultraviolet LEDs 11Aa and 11Ba (see FIG. 4A) that irradiate the moving handrail 102 with deep ultraviolet rays (UV-C). This embodiment does not limit the light source to one that emits deep ultraviolet rays, but is effective in a sterilization device that irradiates light onto the movable handrail 102 for sterilization. In the sterilization device 10 of this embodiment, it is preferable that the wavelength, intensity, and irradiation time of deep ultraviolet rays are appropriately set for viruses to inactivate the viruses.

Before explaining the sterilization device 10, the movable handrail 102 will be explained with reference to FIG. FIG. 3 is a diagram showing a cross section (width direction cross section) of the movable handrail 102 perpendicular to the moving direction.

In FIG. 3, the left-right direction is defined as the "width direction", and the up-down direction is defined as the "up-down direction". In the vertical direction, the going side (going side moving handrail 102A) and the returning side (moving side moving handrail 102B) are reversed up and down.

The movable handrail 102 has an upper surface 102T, lower surfaces 102Ua, 102Ub, and side surfaces 102Sa, 102Sb defined based on the state shown in FIG. The upper surface 102T and the lower surfaces 102Ua and 102Ub are linear surfaces along the width direction in the width direction cross section. The side surfaces 102Sa and 102Sb are surfaces that connect the upper surface 102T and the lower surfaces 102Ua and 102Ub, and are surfaces that form a curve such as an arc in the cross section in the width direction. Here, the upper surface 102T, the lower surfaces 102Ua, 102Ub, and the side surfaces 102Sa, 102Sb are surfaces on the front side (outer side or outer peripheral side) of the movable handrail 102.

FIG. 3 shows the state on the going side (going side moving handrail 102A), and on the returning side (moving handrail 102B), the upper surface 102T is located below the lower surfaces 102Ua and 102Ub.

Next, with reference to FIGS. 4A and 4B, the sterilization device 10 of this embodiment will be described. FIG. 4A is a diagram showing the sterilization device 10, and is a diagram showing a cross section (width direction cross section) perpendicular to the moving direction of the movable handrail 102. FIG. 4B is a diagram showing the sterilization device 10, and is a diagram showing a cross section perpendicular to the width direction of the moving handrail 102 (moving direction cross section). Note that FIG. 4A shows the IVA-IVA cross section of FIG. 4B, and FIG. 4B shows the IVB-IVB cross section of FIG. 4A.

Since the sterilization device 10 is arranged with respect to the return side moving handrail 102B, the vertical direction in the drawings of FIGS. 4A and 4B is upside down from the vertical direction in the mounted state of the sterilization device 10. .

When riding the passenger conveyor 100, a passenger places his or her hand on the upper surface 102T of the moving handrail 102. When the passenger grabs the moving handrail 102, the passenger touches not only the top surface 102T but also the side surfaces 102Sa and 102Sb. Therefore, when sterilizing the movable handrail 102, it is preferable to sterilize not only the top surface 102T but also the side surfaces 102S1 and 102S2.

For this purpose, the sterilization device 10 of this embodiment includes ultraviolet light emitting sections 11Aa and 11Ba that emit ultraviolet light, and a reflective surface 13A that reflects ultraviolet light. The ultraviolet light emitting parts 11Aa and 11Ba are arranged at positions facing the upper surface 102T of the movable handrail 102. The reflective surface 13A is arranged on the side of the movable handrail 102 and faces the side surfaces 102Sa and 102Sb of the movable handrail 102. This will be explained in detail below.

The sterilization device 10 includes a plurality of light emitting parts (light emitting elements) 11Aa and 11Ba that serve as light sources. In this embodiment, the light emitting sections 11Aa and 11Ba are configured with ultraviolet light emitting sections that emit ultraviolet light. In this case, the ultraviolet light emitting parts 11Aa and 11Ba are preferably configured with deep ultraviolet LEDs that emit deep ultraviolet light. The plurality of ultraviolet light emitting units 11Aa and 11Ba are stored in light source storage units 11A and 11B, respectively. The light source storage parts 11A and 11B constitute a light source module (deep ultraviolet LED module).

This embodiment shows an example having two ultraviolet light emitting units 11Aa and 11Ba, and the two ultraviolet light emitting units 11Aa and 11Ba are separately stored in two light source storage units 11A and 11B. The number of ultraviolet light emitting parts may be one or three or more. Further, the plurality of ultraviolet light emitting units may be stored separately in a plurality of light source storage units as in this embodiment, or may be configured to be stored in one light source storage unit.

The sterilization device 10 includes a support body 13 that supports the ultraviolet light emitting parts 11Aa and 11Ba. The ultraviolet light emitting parts 11Aa and 11Ba are stored in the light source storage parts 11A and 11B and supported by the support body 13. For this purpose, a support surface 13-1 is provided on one side of the support body 13 to support the light source storage sections 11A and 11B. The support body 13 is arranged so that the support surface 13-1 faces the upper surface 102T of the movable handrail 102 and is parallel to the upper surface 102T. That is, the support body 13 has one side as a support surface 13-1 that faces the upper surface 102T of the movable handrail 102 and supports the ultraviolet light emitting parts 11Aa and 11Ba.

The light source storage parts 11A and 11B have light emitting part exposed surfaces 11Ab and 11Bb, from which the light emitting parts of the ultraviolet light emitting parts 11Aa and 11Ba are exposed. The light source housing sections 11A and 11B are supported by the support surface 13-1 such that the light emitting section exposed surfaces 11Ab and 11Bb are inserted into the support body 13 through openings formed in the support surface 13-1.

The support body 13 also supports a driver (LED driver) 17 that drives the ultraviolet light emitting sections 11Aa and 11Ba. In this embodiment, the two ultraviolet light emitting parts 11Aa and 11Ba are arranged along the width direction of the moving handrail 102, and the LED driver 17 is placed on the front side in the moving direction or the rear side in the moving direction with respect to the two ultraviolet light emitting parts 11Aa and 11Ba. It is located in Note that the LED driver 17 may be provided for each of the plurality of ultraviolet light emitting units 11Aa, 11Ba, and may be stored in each of the light source storage units 11A, 11B.

The support body 13 includes other side surfaces 13-2a to 13-4a and 13-2b to 13-4b extending from the support surface 13-1 to the sides of the movable handrail 102. The side surfaces 13-2a to 13-4a and 13-2b to 13-4b constitute reflective members that reflect ultraviolet rays (deep ultraviolet rays) emitted from the ultraviolet light emitting parts 11Aa and 11Ba. That is, the reflective surfaces 13A that reflect ultraviolet rays are provided on the other side surfaces 13-2a to 13-4a and 13-2b to 13-4b of the support 13.

The support body 13 includes a support surface 13-1 as a first side surface and other side surfaces 13-2a to 13-4a and 13-2b to 13-4b. The other side portions include second side portions 13-2a, 13-2b, third side portions 13-3a, 13-3b, and fourth side portions 13-4a, 13-4b.

The first side surface portion 13-1 is configured as a flat surface. The ultraviolet light emitting section is composed of two ultraviolet light emitting sections 11Aa and 11Ba. The two ultraviolet light emitting units 11Aa and 11Ba are arranged along the width direction of the moving handrail 102, so that the ultraviolet light emitting units provided in the sterilization device 10 are arranged in a concentrated manner on the support surface 13-1. Note that the two ultraviolet light emitting units 11Aa and 11Ba are arranged inside both ends of the moving handrail 102 in the width direction.

The second side surfaces 13-2a and 13-2b constituting the reflective surface 13A extend from the support surface 13-1 toward the sides of the side surfaces 102Sa and 102Sb of the movable handrail 102. In this embodiment, the second side parts 13-2a and 13-2b are bent in a direction perpendicular to the upper surface 102T and the support surface 13-1 of the movable handrail 102, and extend toward the side of the movable handrail 102. has been done. For this purpose, the support body 13 is formed with bent portions 13-6a and 13-6b.

That is, the side surface of the support body 13 includes second side surface portions 13-2a and 13-2b extending from the support surface 13-1 in a direction perpendicular to the upper surface 102T of the movable handrail 102. The second side portions 13-2a and 13-2b have flat portions extending in the vertical direction.

The third side surfaces 13-3a and 13-3b constituting the reflective surface 13A extend from the ends of the second side surfaces 13-2a and 13-2b on the side opposite to the support surface 13-1 to the movable handrail. It is extended so as to approach the side surfaces 102Sa and 102Sb and the lower surfaces 102Ua and 102Ub of 102. For this reason, the third side surfaces 13-3a, 13-3b are arranged so that the third side surfaces 13-2a, 13-3b are inclined surfaces with respect to the second side surfaces 13-2a, 13-2b. It is folded and formed. The ends of the third side surfaces 13-3a, 13-3b on the side opposite to the second side surfaces 13-2a, 13-2b are located on the sides of the side surfaces 102Sa, 102Sb of the movable handrail 102 in the vertical direction. It extends to a position beyond the lower surfaces 102Ua and 102Ub. Further, the end portions of the third side surfaces 13-3a, 13-3b on the side opposite to the second side surfaces 13-2a, 13-2b are closer to the movable handrail 102 than the side surfaces 102Sa, 102Sb of the movable handrail 102. It is located on the center 102C side in the width direction. For this purpose, the support body 13 is formed with bent portions 13-7a and 13-7b.

That is, the other side portions of the support body 13 include third side portions 13-3a and 13-3b that extend to wrap around below the movable handrail 102. The third side portions 13-3a, 13-3b have bent portions 13-7a, 13-7a at the ends of the second side portions 13-2a, 13-2b on the opposite side to the support surface 13-1. It has a plane part connected via 7b.

The reflective surface 13A is provided at least on the second side surface portions 13-2a, 13-2b and the third side surface portions 13-3a, 13-3b.

The fourth side parts 13-4a, 13-4b are connected to the movable handrail from the end of the third side part 13-3a, 13-3b on the opposite side to the second side part 13-2a, 13-2b. It extends toward the sides (above) of the lower surfaces 102Ua and 102Ub of 102. In this embodiment, the fourth side parts 13-4a, 13-4b extend in the direction from the third side parts 13-3a, 13-3b to the support surface 13-1, the upper surface 102T and the lower surface 102Ua, 102Ub of the moving handrail 102. It is bent and formed. For this purpose, the support body 13 is formed with bent portions 13-8a and 13-8b.

That is, the other side portions of the support body 13 have bent portions 13-8a, It has fourth side parts 13-4a, 13-4b connected via 13-8b, second side parts 13-2a, 13-2b, third side parts 13-3a, 13-3b and fourth side part 13-4a, 13-4b. The side parts 13-4a and 13-4b extend from both ends of the support surface 13-1 in the width direction of the movable handrail 102.

The end 13-9a of the fourth side surface 13-4a opposite to the third side surface 13-3a and the end 13-9a of the fourth side surface 13-4b on the third side 13-3b side. A gap 13-5 is provided between the opposite end 13-9b and the opposite end 13-9b. The interval (distance) L13 of this gap 13-5 is preferably larger than the interval (vertical dimension) L102 between the upper surface 102T and the lower surfaces 102Ua, 102Ub of the moving handrail 102 (L13>L102).

That is, in this embodiment, the two fourth side parts 13-4a and 13-4b, which are arranged separately at both ends of the support surface 13-1 in the width direction of the movable handrail 102, are the third side parts 13-3a and 13-4b. Ends 13-9a and 13-9b on the opposite side to the side of 13-3b face each other with a gap 13-5, and the gap L13 is equal to the distance between the upper surface 102T and the lower surface 102Ua and 102Ub of the moving handrail 102. It is larger than the interval L102 between them.

As a result, the movable handrail 102 can be placed inside the support 13 through the gap 13-5, so it becomes possible to assemble the sterilization device 10 to the movable handrail 102 after the movable handrail 102 is erected. .

In the support body 13 formed as described above, the support surface 13-1 and the fourth side surface portions 13-4a and 13-4b are parallel, and the second side surface portion 13-2a and the second side surface portion 13-2b are parallel to each other. are parallel. The support body 13 forms a surrounding body surrounding the movable handrail 102 outside the movable handrail 102, except for the gap 13-5. The support body 13 is made of, for example, SUS in order to ensure strength. Aluminum is deposited on the inner surfaces of the other side surfaces 13-2a to 13-4a and 13-2b to 13-4b in order to increase the reflectance of ultraviolet rays (deep ultraviolet rays) on the reflective surface 13A.

As shown in FIG. 4A, the support body 13 on which the reflective surface 13A is formed is composed of a thin plate-like member. For this reason, the support body 13 can also be called a reflector.

The ultraviolet light emitted from the ultraviolet light emitting parts 11Aa and 11Ba to the moving handrail 102 includes ultraviolet light UV1 that is directly emitted to the upper surface 102T and part of the side surfaces 102Sa and 102Sb of the moving handrail 102, and the second side surface parts 13-2a and 13-2. -2b and the ultraviolet light UV2 that is reflected by the third side surfaces 13-3a, 13-3b and then irradiated onto the side surfaces 102Sa, 102Sb of the moving handrail 102.

An ultraviolet intensity measuring device 15 is arranged on the second side surface portion 13-2a. The ultraviolet light UV3 irradiated from the ultraviolet light emitting part 11Aa to the second side surface part 13-2a enters the ultraviolet intensity measuring device 15, and the intensity of the ultraviolet light (deep ultraviolet) is measured by the ultraviolet intensity measuring device 15. The intensity information of the ultraviolet rays detected by the ultraviolet intensity measuring device 15 is sent to the LED driver 17, and the LED driver 17 adjusts or controls the intensity of the ultraviolet rays emitted from the ultraviolet light emitting parts 11Aa and 11Ba.

The ultraviolet light intensity measuring device 15 is also disposed on the second side surface portion 13-2b, and measures the intensity of the deep ultraviolet light UV3 irradiated from the ultraviolet light emitting portion 11Ba to the second side surface portion 13-2b. The luminescence intensity of 11Ba may be individually adjusted or controlled.

The moving handrail 102 has an upper surface 102T, lower surfaces 102Ua, 102Ub, and side surfaces 102Sa, 102Sb, and has a complicated shape. Further, the ultraviolet light emitting units 11Aa and 11Ba arranged on a plane irradiate the moving handrail 102 with ultraviolet light from one side. In this embodiment, the reflective surface 13A of the support body 13 has at least the second side surface portions 13-2a, 13-2b and the third side surface portions 13-3a, 13-3b, so that the ultraviolet light emitting portions 11Aa, 11Ba are illuminated. Using this method, a wide area of the movable handrail 102, which has a complicated shape, can be sterilized.

Here, FIG. 5 shows an example of a state in which the moving handrail 102 is irradiated with ultraviolet rays. FIG. 5 is a diagram illustrating an example of a state in which the movable handrail 102 is irradiated with ultraviolet rays in the sterilization device 102 of this embodiment.

From FIG. 5, it can be seen that almost the entire surface of the moving handrail 102 can be irradiated with ultraviolet rays UV-1 and UV-2 by using the two ultraviolet light emitting units 11Aa and 11Ba arranged on a plane. This shows that almost the entire surface of the movable handrail 102 that is touched by passengers can be sterilized.

In this case, the range of the movable handrail 102 that can be irradiated with ultraviolet rays also changes depending on the following parameters.
- Distance between the ultraviolet light emitting parts 11Aa, 11Ba and the moving handrail 102 - Distance between the moving handrail 102 and the reflective surface 13A composed of the second side parts 13-2a, 13-2b and the third side parts 13-3a, 13-3b - Angle of the reflective surface 13A composed of the second side parts 13-2a, 13-2b and the third side parts 13-3a, 13-3b with respect to the moving handrail 102 - Second side parts 13-2a, 13- 2b and the size (dimensions) of the reflective surface 13A composed of the third side parts 13-3a and 13-3b
Therefore, by appropriately setting these parameters for the passenger conveyor 100, it is also possible to sterilize the entire area of the moving handrail 102. Further, by appropriately setting the above parameters, the number of ultraviolet light emitting parts can be reduced to one.

In this embodiment, by using the reflective surface 13A, it is possible to reduce the number of ultraviolet light emitting parts necessary for sterilizing the movable handrail 102, which has a complicated shape. For example, in Patent Document 1, the number of ultraviolet light emitting parts is three, whereas in this embodiment, the number of ultraviolet light emitting parts can be reduced to two. By reducing the number of ultraviolet light emitting parts, the number of wiring can be reduced, and the sterilization device 10 can be made smaller. As a result, the light source storage parts (light source modules) 11A and 11B that house ultraviolet light emitting parts can be arranged in a small space around the moving handrail 102 so as to be able to irradiate a wide range of the moving handrail 102 with ultraviolet rays. Thereby, the degree of freedom in designing the passenger conveyor 100 can be improved.

A modification of the sterilization device 10 will be described with reference to FIG. 6. FIG. 6 is a diagram showing a modification of the sterilization device 10, and is a diagram showing a cross section (width direction cross section) perpendicular to the moving direction of the movable handrail 102.

In this example, the shape of the support body (reflection plate) 13 is changed from the example described above. That is, in the above-described embodiment, the third side portions 13-3a and 13-3b had a flat plate shape, whereas in this example, the third side portions 13-3a and 13-3b have curved surfaces. Particularly, in this example, the curved surface is constituted by an arcuate surface forming an arc in the width direction cross section of FIG.

By appropriately forming the shape of the curved surface, the irradiation state of ultraviolet rays can be adjusted, such as by concentrating the ultraviolet rays.

With reference to FIG. 7, the settings of the above parameters will be explained using some examples. FIG. 7 is an enlarged cross-sectional view in the width direction showing the side surface 102Sa side of the moving rail 102 in FIG. 4A.

FIG. 7 illustrates one light beam UV emitted from the ultraviolet light emitting section 11Aa when the ultraviolet light emitting section 11Aa is regarded as a point light source. Ax represents the central axis of the entire ultraviolet ray irradiation direction in the ultraviolet light emitting section 11Aa.

The UV light (deep ultraviolet rays) comes into contact with the arcuate surface of the side surface 102Sa of the moving rail 102, and enters the reflective surface 13A of the third side surface portion 13-3a. At this time, assuming that the third side surface portion 13-3a does not exist, a dotted line indicates the light beam when the light beam UV is reflected on the extension line of the second side surface portion 13-2a. The light ray UV illustrated in FIG. 7 indicates the boundary between the ultraviolet ray UV1 directly irradiated onto the moving handrail 102 and the ultraviolet ray UV2 reflected by the reflective surface 13A and indirectly irradiated onto the moving handrail 102.

In this case, the light rays irradiated closer to the center axis Ax than the UV do not reach the lower region in the figure from the contact point between the UV and the side surface 102Sa of the movable handrail 102. The light rays emitted from the UV to the side opposite to the central axis Ax side are reflected by the reflective surface 13A, and the UV and side surfaces 102Sa are in areas that cannot be directly irradiated from the ultraviolet light emitting part 11Aa in the side surfaces 102Sa of the moving handrail 102. from the point of contact with the area (lower area in the figure).

Therefore, in order to reliably irradiate the side surface 102Sa of the moving handrail 102 with the light UV reflected by the reflective surface 13A, the position of the boundary between the second side surface portion 13-2a and the third side surface portion 13-3a, that is, the bent portion 13 Set the position of -7a as follows. That is, the bent portion 13-7a is located on the light source 11Aa side (supporting surface 13-1 side) than the intersection point p where the extension line of the light ray UV shown by the dotted line intersects with the extension line of the second side surface portion 13-2a. It is preferable to

That is, in this embodiment, the movable handrail 102 has side surfaces 102Sa and 102Sb that form a curve in the cross section in the width direction and connect the upper surface 102T and the lower surfaces 102Ua and 102Ub. The bent parts 13-7a, 13-7b between the second side parts 13-2a, 13-2b and the third side parts 13-3a, 13-3b are the bent parts 13-7a, 13-7b of the two ultraviolet light emitting parts 11Aa, 11Ba. It passes through the center of the ultraviolet light emitting parts 11Aa and 11Ba arranged on the side of the parts 13-7a and 13-7b, and touches the side surfaces 102Sa and 102Sb of the movable handrail 102 located on the side of the bent parts 13-7a and 13-7b. When a tangent line (ray UV) is imagined, it is located closer to the ultraviolet light emitting parts 11Aa and 11Ba than the intersection point p between the tangent line and the extension line of the second side surface parts 13-2a and 13-2b.

Further, when the third side surface 13-3a is perpendicular to the UV, the UV is only reflected in the direction opposite to the direction of incidence on the third side surface 13-3a. Therefore, the inclination angle θ2 of the third side surface portion 13-3a with respect to the second side surface portion 13-2a is the inclination angle θ2 with respect to the second side surface portion 13-2a when the third side surface portion 13-3a is perpendicular to UV. It is preferable that the inclination angle θ1 of the third side surface portion 13-3a is smaller than θ2 (θ2<45°).

Note that the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the embodiments described above have been described in detail to explain the present invention in an easy-to-understand manner, and are not necessarily limited to all the configurations. Furthermore, it is possible to add or replace some of the configurations of the embodiments with other configurations.

10... Sterilization device, 11Aa, 11Ba... Ultraviolet light emitting unit, 13... Support, 13-1... Support surface of ultraviolet light emitting unit 11Aa, 11Ba (one side of support 13, first side part), 13-2a~ 13-4a, 13-2b to 13-4b...Other side surface of support body 13, 13-2a, 13-2b...Second side surface portion, 13-3a, 13-3b...Third side surface portion, 13-4a, 13-4b...fourth side part, 13-7a, 13-7b, 13-8a, 13-8b...bending part, 13-9a, 13-9b...third part of fourth side part 13-4a, 13-4b 13A... Reflective surface, 100... Passenger conveyor, 102... Moving handrail, 102Sa, 102Sb... Side surface of moving handrail 102, 102T... Side face of moving handrail 102 Upper surface, 13-5... Gap, 102Ua, 102Ub... Lower surface of the moving handrail 102, p... Intersection of the tangent (ray UV) and the extension line of the second side portions 13-2a, 13-2b.

Claims (9)

A step board that is driven in circulation, a movable handrail that is disposed on the side of the step board and is driven in circulation , and a sterilization device that sterilizes the movable handrail ,
The sterilization device includes an ultraviolet light emitting part that emits ultraviolet light, a support that supports the ultraviolet light emitting part, and a reflective surface that reflects the ultraviolet light,
The ultraviolet light emitting unit is arranged at a position facing the upper surface of the moving handrail,
The support body has one side as a support surface that faces the upper surface of the movable handrail and supports the ultraviolet light emitting part, and extends from both ends of the support surface in the width direction of the movable handrail to both sides of the movable handrail. and another side part provided with the
In the passenger conveyor , the reflective surface is provided on the other side surface of the support and is disposed on the side of the moving handrail,
When the support surface is a first side surface, the support body includes a second side surface,
a second side surface extending from the first side surface in a direction perpendicular to the top surface of the movable handrail;
The second side surface is connected to the end opposite to the first side surface, and the end opposite to the second side surface moves more than the side surface of the movable handrail. a third side portion located on the center side in the width direction of the handrail and extending to wrap around below the movable handrail;
a fourth side surface connected to an end of the third side surface opposite to the second side surface and extending to a side opposite to the third side surface;
The two fourth side parts provided separately at both ends of the first side face in the width direction of the movable handrail are arranged such that the end opposite to the third side face has a gap. is,
The passenger conveyor , wherein the size of the gap is larger than the gap between the upper surface and the lower surface of the moving handrail . The passenger conveyor according to claim 1 ,
The passenger conveyor, wherein the reflective surface is provided on the second side surface , the third side surface , and the fourth side surface . The passenger conveyor according to claim 2 ,
The first side portion is configured of a flat surface,
The ultraviolet light emitting section is composed of two ultraviolet light emitting sections,
The two ultraviolet light emitting parts are arranged along the width direction of the movable handrail, so that the ultraviolet light emitting parts provided in the sterilization device are arranged in a concentrated manner on the first side surface part . Passenger conveyor. The passenger conveyor according to claim 3 ,
The passenger conveyor, wherein the two ultraviolet light emitting parts are arranged inside both ends of the moving handrail in the width direction. The passenger conveyor according to claim 4 ,
The second side part has a flat part extending along the vertical direction,
The passenger conveyor, wherein the third side surface portion has a flat portion connected to an end of the second side surface portion opposite to the first side surface portion via a bent portion. The passenger conveyor according to claim 5 ,
The passenger conveyor, wherein the fourth side surface is connected to an end of the third side surface opposite to the second side surface through a bent portion. The passenger conveyor according to claim 6 ,
The moving handrail has a side surface that forms a curve on a cross section perpendicular to the moving direction of the moving handrail and connects the upper surface and the lower surface,
The folded portion between the second side surface portion and the third side surface portion passes through the center of the ultraviolet light emitting portion of the two ultraviolet light emitting portions that is disposed on the side of the bent portion, and When a tangent in contact with the side surface of the movable handrail located on the side is imagined, the handrail is located closer to the ultraviolet light emitting part than the intersection of the tangent and the extension line of the second side surface part. passenger conveyor. The passenger conveyor according to claim 4,
The second side part has a flat part extending along the vertical direction,
The passenger conveyor, wherein the third side portion has a curved surface in a cross section perpendicular to the moving direction of the moving handrail. The passenger conveyor according to any one of claims 1 to 8 ,
The passenger conveyor is characterized in that the ultraviolet light emitting unit includes a deep ultraviolet LED that emits deep ultraviolet light as the ultraviolet light.

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