JP2015159152A - solar panel cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar panel cleaning device on which a cleaning liquid provided to a light-receiving surface is hardly influenced by a wind and the cleaning liquid may be easily provided to a desired position of the light-receiving surface.SOLUTION: A solar panel cleaning device 1 that cleans a light-receiving surface while traveling on the light-receiving surface of a solar panel includes: a cleaning liquid supply member 22 for supplying the light-receiving surface with a cleaning liquid; cleaning members 23, 24 for cleaning the light-receiving surface to which the cleaning liquid is supplied from the cleaning liquid supply member 22; and a case member 21 that enclose the cleaning liquid supply member 22.

Description

  The present invention relates to a solar panel cleaning device for cleaning a light receiving surface of a solar panel.

  In recent years, as one of power generation systems that use renewable energy, solar systems that use solar energy have become popular. The solar system is installed outdoors with the light receiving surface of the solar panel facing the sun, and has the advantage that the solar panel can be installed by effectively utilizing the roof and rooftop of factories, buildings, general houses and the like. Solar panels are often installed with the light-receiving surface inclined in the direction of sunlight (southern in Japan).

  A solar panel is an assembly of multiple cells that incorporate solar cells that instantly convert sunlight into electric power through the photovoltaic effect. In a typical solar system, multiple panel units are arranged vertically and horizontally. Used as a connected array. In some large-scale mega solar systems, the total length of the array to which the panel units are connected reaches several hundred meters.

  Since these solar panels are installed outdoors, foreign matter such as dust contained in the atmosphere and rainwater, bird droppings, and dead leaves adhere to the light receiving surface. For this reason, it is a big problem of a solar system that sunlight is interrupted | blocked by the dust and foreign material adhering to these light-receiving surfaces, and electric power generation efficiency falls. To prevent this decrease in power generation efficiency, the light receiving surface of the solar panel should be cleaned as appropriate to remove the adhering dust and foreign matter, but the solar panel should be installed at a high place such as on the roof or rooftop. Therefore, manual cleaning is difficult in terms of safety. Further, in a mega solar system having a vast light receiving surface, manual cleaning requires a great deal of labor.

  Therefore, for example, Patent Document 1 proposes that a solar panel cleaning device that cleans the light-receiving surface is provided with a self-propelled means and configured to be self-propelled. Specifically, a recognition means for recognizing the size and shape of the solar panel is provided, and the self-running means is controlled so as to sequentially run on the light receiving surface of the solar panel based on the output from the recognition means. . In this way, the entire solar panel can be cleaned safely and efficiently.

JP 2010-186819 A

  By the way, the solar panel cleaning apparatus of patent document 1 is comprised so that cleaning of a light-receiving surface can be performed effectively by supplying a washing | cleaning liquid to the light-receiving surface of a solar panel from an injection nozzle. However, this spray nozzle is attached to the frame of the solar panel cleaning device, and is provided in an exposed state. For this reason, when a strong wind blows during cleaning, there is a problem that the cleaning liquid discharged from the jet nozzle is blown by the wind and the cleaning liquid cannot be supplied to a desired position on the light receiving surface.

  Accordingly, an object of the present invention is to provide a solar panel cleaning device in which the cleaning liquid supplied to the light receiving surface is not easily affected by wind and can easily supply the cleaning liquid to a desired position on the light receiving surface.

  The solar panel cleaning apparatus according to the present invention is a solar panel cleaning apparatus that cleans the light receiving surface while traveling on the light receiving surface of the solar panel, and includes a cleaning liquid supply member that supplies a cleaning liquid to the light receiving surface, and the cleaning liquid supply A cleaning member that cleans the light receiving surface to which the cleaning liquid is supplied from a member, and a case member that surrounds the cleaning liquid supply member.

  According to the present invention, the cleaning liquid is supplied from the cleaning liquid supply member to the light receiving surface, and the light receiving surface supplied with the cleaning liquid is cleaned by the cleaning member, so that the light receiving surface can be effectively cleaned. At this time, since the cleaning liquid supply member is surrounded by the case member, the case member serves as a wind barrier for the cleaning liquid supplied from the cleaning liquid supply member. Therefore, according to the present invention, it is possible to provide a solar panel cleaning device in which the cleaning liquid supplied to the light receiving surface is not easily affected by wind and can easily supply the cleaning liquid to a desired position on the light receiving surface.

  Here, it is preferable that the cleaning member is disposed in the case member.

  When the light receiving surface is cleaned using the cleaning liquid, the cleaning liquid contains dirt and becomes dirty water. The cleaning member may scatter such sewage. If the scattered sewage adheres to the light receiving surface, the light receiving surface is contaminated. Therefore, by disposing the cleaning member in the case member, the sewage scattered by the cleaning member is mainly landed on the inner surface of the case member, and can be prevented from adhering to the light receiving surface.

  The cleaning liquid supply member is preferably switchable between a cleaning state in which the cleaning liquid is supplied to the light receiving surface and a sewage removal state in which the cleaning liquid is supplied to the cleaning member.

  As cleaning progresses, the above-mentioned dirty water adheres to and accumulates on the cleaning member, and cleaning may not be performed properly. Accordingly, the cleaning liquid supply member can be switched not only to the cleaning state in which the cleaning liquid is supplied to the light receiving surface but also to the sewage removal state in which the cleaning liquid is supplied to the cleaning member. With the cleaning liquid supplied from the sewage, the sewage adhering to the cleaning member can be washed off as appropriate, and effective cleaning can be performed continuously.

  At this time, the cleaning liquid supply member and the cleaning member are both attached to the case member, and the cleaning liquid supply member is in the cleaning state by moving the case member so that the cleaning member is separated from the light receiving surface. It is preferable to configure so as to switch to the sewage removal state.

  According to such a configuration, if the case member is moved so that the cleaning member is separated from the light receiving surface, cleaning of the light receiving surface by the cleaning member is interrupted and cleaning liquid can be supplied to the cleaning member. The cleaning of the cleaning member can be performed.

  In addition, it is preferable that the cleaning liquid supply member is in the sewage removal state when the cleaning member is positioned outside the light receiving surface.

  By doing so, when the sewage adhering to the cleaning member is washed away by the cleaning liquid supplied from the cleaning liquid supply member, the sewage basically drops out of the light receiving surface. For this reason, the contamination by sewage adhering to a light-receiving surface can be suppressed.

  In addition, the cleaning member includes a rotating brush in which a brush is spirally wound around a rotating shaft, and the rotating direction of the rotating brush is the left and right of the rotating shaft in the axial direction of the light receiving surface. It is preferable that the cleaning liquid be directed to the side where the region exists.

  When such a rotating brush is used, the cleaning liquid (dirt water) containing dirt moves toward one of the left and right sides in the axial direction along the spirally wound brush. At this time, even if the sewage goes to the uncleaned area of the light receiving surface, the area is cleaned later, so that there is no particular problem. Therefore, the contamination of the cleaned region can be positively avoided by rotating the rotating brush so that the dirty water is directed to the uncleaned region of the light receiving surface as described above.

  Alternatively, the rotating brush may be configured as follows. That is, the cleaning member includes a rotating brush in which a brush is spirally wound around a rotating shaft, and a wiper provided behind the rotating brush, and the rotating brush has an axial direction of the rotating shaft. The winding direction of the brush may be opposite to the left and right, and the rotation direction of the rotating brush may be a direction in which the cleaning liquid is directed to the center in the axial direction.

  By doing so, the sewage collects in the axial center of the rotating brush. The sewage collected in the center is wiped by a wiper provided behind the rotating brush. Therefore, it can suppress that dirty water goes to the cleaned area | region of a light-receiving surface, and can avoid the contamination of the cleaned area | region actively.

  According to the present invention, by configuring the cleaning liquid supply member so as to be surrounded by the case member, the cleaning liquid supplied to the light receiving surface is not easily affected by the wind, and the solar panel can easily supply the cleaning liquid to a desired position on the light receiving surface. A cleaning device can be provided.

It is the (a) external appearance perspective view and (b) side view of a solar panel cleaning apparatus. It is a top view which shows the inside of a cleaning part. It is a top view which shows an example of the cleaning line of a solar panel cleaning apparatus. It is a side view which shows the supply aspect of the washing | cleaning liquid from the washing | cleaning liquid supply pipe | tube in a cleaning state and (b) sewage removal state. It is a top view which shows the detail of a rotating brush. It is a top view which shows the detail of the modification of a rotating brush.

[Configuration of solar panel cleaning equipment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1: is the (a) external appearance perspective view and (b) side view of a solar panel cleaning apparatus. The solar panel cleaning device 1 according to the present embodiment includes a main body 10 that runs on the light receiving surface of the solar panel, and a cleaning unit 20 that is connected to the front of the main body 10. When the main body 10 self-runs on the light receiving surface, the cleaning unit 20 runs on the light receiving surface integrally with the main body 10, and the cleaning of the light receiving surface is performed by the cleaning unit 20.

  The main body 10 has a pair of left and right crawlers 11 as self-propelled means, and a housing 12 is disposed above the crawler 11. Housed in the housing 12 are a controller 13 that controls the operation of each electric component, a battery 14 that supplies electric power to each electric component, and a tank 15 that stores a cleaning liquid for cleaning the light receiving surface.

  The cleaning unit 20 includes a case 21 that can swing around a shaft A extending in the left-right direction with respect to the housing 12 of the main body unit 10, and various cleaning means are attached to the case 21. The case 21 has a substantially rectangular parallelepiped shape, and an opening is formed on the lower surface thereof. The cleaning unit 20 serves as a cleaning unit, a cleaning liquid supply pipe 22 that discharges the cleaning liquid in the tank 15 to the light receiving surface, a rotating brush 23 that rotates and brushes the light receiving surface to which the cleaning liquid is supplied, and a brushed light receiving light. A wiper 24 for wiping the surface is provided. The rotating brush 23 and the wiper 24 are disposed in the case 21, but their lower portions partially protrude from the opening on the lower surface of the case 21 and are configured to contact the light receiving surface.

  FIG. 2 is a top view showing the inside of the cleaning unit. The cleaning liquid supply pipe 22 extends in the left-right direction, and is attached to the case 21 while being surrounded by the case 21. A plurality of discharge holes 22 a are formed in the left-right direction below the cleaning liquid supply pipe 22. A pump 32 is connected to a flexible hose 31 that connects the tank 15 and the cleaning liquid supply pipe 22, and by operating the pump 32, the cleaning liquid is discharged downward from the discharge hole 22 a. It should be noted that the cleaning liquid is not applied with such a large discharge pressure, and the cleaning liquid discharged from the discharge hole 22a falls mainly downward due to its own weight. However, the discharge form of the cleaning liquid is not limited to this, and the discharge direction may be defined by increasing the discharge pressure.

  A rotating brush 23 is provided behind the cleaning liquid supply pipe 22, and a wiper 24 is provided further behind the rotating brush 23. Further, the length of the cleaning liquid supply pipe 22 is longer than that of the rotating brush 23 in the width direction (left-right direction) of the solar panel cleaning device 1. This is because the cleaning liquid is reliably supplied from the cleaning liquid supply pipe 22 to the entire area of the rotary brush 23 when the rotary brush 23 described later is cleaned. The wiper 24 is longer than the cleaning liquid supply pipe 22 and the rotating brush 23. This is for reliably wiping the cleaning liquid supplied from the cleaning liquid supply pipe 22 to the light receiving surface and the cleaning liquid (sewage) used for brushing by the rotating brush 23. However, it is not essential to define the length of each member as described above.

  Returning to FIG. 1, the description will be continued. A camera 25 for photographing the front in the traveling direction is provided at the center of the front surface of the case 21. Further, an ultrasonic sensor 26 is provided in front of the lower surface of the case 21. The ultrasonic sensor 26 has a transmission unit that emits ultrasonic waves downward and a reception unit that detects the reflected wave, and detects whether or not a light receiving surface exists immediately below the ultrasonic sensor 26. can do. That is, the ultrasonic sensor 26 functions as a detection unit that detects the end of the light receiving surface. However, as such a detection unit, another optical sensor or a contact sensor may be used, or the end of the light receiving surface may be detected using image data from the camera 25.

[Cleaning line]
FIG. 3 is a plan view showing an example of a cleaning line of the solar panel cleaning device. The array 100 cleaned by the solar panel cleaning device 1 is configured by arranging a large number of panel units 101 in which solar panels are arranged vertically and horizontally, and the light receiving surface 100a is inclined in one direction. And the solar panel cleaning apparatus 1 cleans the whole area of the light-receiving surface 100a, running on the light-receiving surface 100a along the cleaning line R.

  In this example, the solar panel cleaning device 1 repeats the movement along the longitudinal direction perpendicular to the tilt direction while changing the position in the tilt direction little by little. Specifically, the left end portion on the upper end side of the slope is used as a start point, and after traveling to the right along the cleaning line R1, the right end portion of the light receiving surface 100a is turned so as to change the direction at a right angle to the direction of going down the tilt direction. And move a predetermined distance along the cleaning line R2. Subsequently, it turns to change the direction to the left at a right angle, and after making a self-run to the left along the cleaning line R3, it turns to change the direction at a right angle to the direction that goes down the inclined direction at the left end of the light receiving surface 100a. Then, it moves by a predetermined distance along the cleaning line R4. And it turns so that it may change direction at right angle to the right direction, and self-travels to the right along the cleaning line R5. By repeatedly performing such movement, the solar panel cleaning device 1 is self-propelled throughout the light receiving surface 100a. However, the form of the cleaning line R is not limited to this.

  The solar panel cleaning device 1 (main body 10) travels when the controller 13 controls the operation of the crawler 11. Further, the controller 13 appropriately determines whether or not the solar panel cleaning device 1 is traveling along the cleaning line R based on the front image data output from the camera 25. As a result, when it is determined that the solar panel cleaning device 1 is off the cleaning line R, the controller 13 gives a speed difference to the left and right crawlers 11 to return the solar panel cleaning device 1 to the cleaning line R. Control is performed. Further, the controller 13 appropriately determines whether or not the solar panel cleaning device 1 has reached the end of the light receiving surface 100 a based on the output value from the ultrasonic sensor 26.

[Cleaning condition and sewage removal condition]
Here, as cleaning of the light receiving surface 100a proceeds, dirty cleaning liquid (sewage) adheres to and accumulates on the rotating brush 23, and cleaning may not be performed properly. Therefore, in the solar panel cleaning device 1, the cleaning liquid supply pipe 22 is configured to be switchable between a cleaning state in which the cleaning liquid is supplied to the light receiving surface 100 a and a sewage removal state in which the cleaning liquid is supplied to the rotating brush 23. .

  FIG. 4 is a side view showing a supply mode of the cleaning liquid from the cleaning liquid supply pipe in (a) the cleaning state and (b) the sewage removal state. In the cleaning state shown in FIG. a, there is no other member below the cleaning liquid supply pipe 22, and the cleaning liquid discharged from the cleaning liquid supply pipe 22 and falling mainly by its own weight passes through the opening on the lower surface of the case 21. It is supplied to the light receiving surface 100a. Then, the light receiving surface 100a to which the cleaning liquid is supplied is brushed with the rotating brush 23, and the brushed light receiving surface 100a is wiped with the wiper 24, whereby the light receiving surface 100a is cleaned.

  On the other hand, the sewage removal state shown in FIG. B is realized by swinging the case 21 upward about the axis A so that the rotating brush 23 and the wiper 24 are separated from the light receiving surface 100a. At this time, the case 21 is swung so that the cleaning liquid supply pipe 22 attached to the case 21 is positioned above the rotating brush 23. By doing so, the cleaning liquid discharged from the cleaning liquid supply pipe 22 and falling mainly by its own weight is supplied to the rotating brush 23, and the sewage adhering to the rotating brush 23 is washed away by the cleaning liquid. At this time, by rotating the rotating brush 23, dirty water is shaken off by centrifugal force, and the cleaning effect of the rotating brush 23 is improved. However, it is not essential to rotate the rotating brush 23.

  Next, mutual switching between the cleaning state and the sewage removal state will be described. Basically, when the solar panel cleaning device 1 reaches the end of the light receiving surface 100a during traveling along the cleaning lines R1, R3, R5,... Extending in the longitudinal direction of FIG. The supply pipe 22 is switched from the cleaning state to the sewage removal state. However, the timing for executing the switching is not limited to this. For example, the switching may be performed after the solar panel cleaning device 1 is moved to the end of the light receiving surface 100a at the end of cleaning.

  Specifically, when the end of the light receiving surface 100a is detected by the ultrasonic sensor 26, the controller 13 causes the solar panel cleaning device 1 to travel until the rotating brush 23 is positioned outside the light receiving surface 100a. Subsequently, the controller 13 stops the solar panel cleaning device 1 and swings the case 21 upward to switch the cleaning liquid supply pipe 22 from the cleaning state to the dirty water removal state. Note that the swinging of the case 21 is performed by a drive unit (not shown) based on a command signal from the controller 13.

  After maintaining the sewage removal state of the cleaning liquid supply pipe 22 for a predetermined time, the controller 13 turns the solar panel cleaning device 1 toward the next cleaning lines R2, R4,. When the turning is completed, the cleaning liquid supply pipe 22 is returned from the dirty water removal state to the cleaning state by swinging the case 21 to the original position. Thus, by rotating while maintaining the sewage removal state where the rotating brush 23 and the wiper 24 are separated from the light receiving surface 100a, the resistance friction by the rotating brush 23 and the wiper 24 is reduced, and the solar panel cleaning device 1 Can be easily turned. However, it is not essential to perform turning while maintaining the sewage removal state, and it is also possible to turn the cleaning liquid supply pipe 22 after returning it from the sewage removal state to the cleaning state.

[Rotating brush details]
FIG. 5 is a top view showing details of the rotating brush. The rotating brush 23 is configured as a spiral brush in which a brush 23b is spirally wound around a rotating shaft 23a. The winding direction shown in FIG. 5 is generally called “S winding” because of the way the brush 23b is seen. When the rotating brush 23 configured in this way is rotated in the rotation direction S1 that is counterclockwise when viewed from the axial right side of the rotation shaft 23a, the sewage moves to the right along the brush 23b in the traveling direction. Flow in direction D1. On the other hand, when the rotating brush 23 is rotated in the direction S2 opposite to the rotation direction S1, the sewage flows along the brush 23b in the traveling direction in the left direction D2. The rotating shaft 23a is configured to be rotatable forward and backward by a motor (not shown).

  When the solar panel cleaning apparatus 1 having such a rotating brush 23 is used to clean the light receiving surface 100a along the cleaning line R shown in FIG. 3, the rotating direction of the rotating brush 23 may be set as follows. That is, when cleaning is performed along the right-hand cleaning lines R1, R5,... In FIG. The sewage is directed to the right direction D1. On the other hand, when cleaning is performed along the leftward cleaning line R3,... In FIG. 3, the rotating brush 23 is rotated in the rotation direction S2 because the left side is an uncleaned region facing the traveling direction. Let the sewage turn to the left direction D2.

  Thus, by rotating the rotating brush 23 so that dirty water goes to the uncleaned area of the light receiving surface 100a, contamination of the cleaned area can be positively avoided. In addition, even if dirty water flows into the uncleaned area | region of the light-receiving surface 100a, since the said area | region is cleaned later, it will not become a problem in particular. Further, when cleaning is performed along the cleaning lines R2, R4,..., The rotating brush 23 may be rotated so that sewage is directed to the outside of the light receiving surface 100a.

[Variation of rotating brush]
FIG. 6 is a top view showing details of a modified example of the rotating brush. The rotating brush 23 is configured as a spiral brush in the same manner as in FIG. 5, but here, the winding direction of the brush is opposite in the left half and the right half in the axial direction of the rotating shaft 23a. Specifically, in the left half, the brush 23c is spirally wound so as to be S-turned as in FIG. 5, and in the right half, the brush is set to be Z-turn which is the reverse winding of the S-winding. 23d is wound spirally.

  When the rotary brush 23 configured in this way is rotated in the rotation direction S3 that is counterclockwise when viewed from the axial right side of the rotation shaft 23a, in the left half, the sewage moves along the brush 23c in the traveling direction. In the right half, the sewage flows along the brush 23d in the direction of travel and flows in the left direction D4. That is, the sewage collects in the center of the rotating brush 23 in the axial direction. The sewage collected in the center is wiped by a wiper 24 provided behind the rotating brush 23. Therefore, it can suppress that dirty water goes to the cleaned area | region of the light-receiving surface 100a, and can avoid the contamination of the cleaned area | region actively. Further, the solar panel cleaning device 1 is excellent in that it is not necessary to change the rotation direction of the rotary brush 23 no matter where the cleaning line R in FIG.

[effect]
In the solar panel cleaning apparatus 1 of the present embodiment, the cleaning liquid supply pipe 22 (cleaning liquid supply member) is surrounded by the case 21 (case member). For this reason, the case 21 serves as a windbreak wall for the cleaning liquid supplied from the cleaning liquid supply pipe 22. Therefore, the cleaning liquid supplied to the light receiving surface 100a is not easily affected by the wind, and the cleaning liquid can be easily supplied to a desired position on the light receiving surface 100a.

  In the present embodiment, the rotating brush 23 and the wiper 24 (both of which are cleaning members) are disposed in the case 21. For this reason, even if the rotating brush 23 and the wiper 24 sometimes scatter the contaminated cleaning liquid (sewage), the sewage mainly lands on the inner surface of the case 21 and suppresses adhesion to the light receiving surface 100a. it can.

  In the present embodiment, the cleaning liquid supply pipe 22 is configured to be switchable between a cleaning state in which the cleaning liquid is supplied to the light receiving surface 100a and a sewage removal state in which the cleaning liquid is supplied to the rotary brush 23. According to this configuration, the cleaning liquid supplied from the cleaning liquid supply pipe 22 in the sewage-removed state can appropriately wash away the sewage adhering to the rotary brush 23, and can perform effective cleaning continuously.

  In the present embodiment, the cleaning liquid supply pipe 22 and the rotating brush 23 are both attached to the case 21, and the cleaning liquid supply pipe 22 is swung by swinging the case 21 so that the rotating brush 23 is separated from the light receiving surface 100a. Is configured to switch from the cleaning state to the sewage removal state. According to this configuration, the cleaning of the light receiving surface 100a by the rotating brush 23 is interrupted and the cleaning liquid is supplied to the rotating brush 23 only by swinging the case 21 so that the rotating brush 23 is separated from the light receiving surface 100a. Therefore, the cleaning of the rotary brush 23 can be easily performed.

  Further, in the present embodiment, when the rotary brush 23 is positioned outside the light receiving surface 100a, the cleaning liquid supply pipe 22 is in a sewage removal state. By doing so, when the sewage adhering to the rotating brush 23 is washed away by the cleaning liquid supplied from the cleaning liquid supply pipe 22, the sewage basically drops out of the light receiving surface 100a. For this reason, the contamination by sewage adhering to the light-receiving surface 100a can be suppressed.

[Modification]
The present invention is not limited to the above embodiment, and the elements of the above embodiment can be appropriately combined or variously modified without departing from the spirit of the present invention. An example is shown below.

  In the said embodiment, although the case 21 was made into the rectangular parallelepiped shape which the lower surface opened, the shape of the case 21 is not limited to this. In other words, any shape that can surround the cleaning liquid supply pipe 22 may be used, and for example, a cylindrical shape having upper and lower surfaces opened may be used.

  In the above embodiment, the rotary brush 23 and the wiper 24 are provided as the cleaning member. However, other members may be provided as the cleaning member, or the rotary brush 23 is omitted and the cleaning is performed only with the wiper 24. Also good. Further, the rotating brush 23 and the wiper 24 are not necessarily arranged in the case 21, and may be arranged in the main body 10, for example.

  In the above embodiment, the cleaning liquid supply pipe 22 is provided as the cleaning liquid supply member. However, the cleaning liquid supply member may be in other forms, for example, an injection nozzle can be provided as the cleaning liquid supply member.

  In the above embodiment, the rotary brush 23 is cleaned with the cleaning liquid supplied from the cleaning liquid supply pipe 22 in the sewage removal state. However, the wiper 24 may be washed instead of the rotating brush 23, or both of them may be washed. Furthermore, it is good also as what wash | cleans the cleaning member provided elsewhere.

  In the above embodiment, the cleaning liquid supply pipe 22 is put into the sewage removal state when the rotating brush 23 is located outside the light receiving surface 100a. However, if the sewage falling on the light receiving surface 100a can be removed by, for example, subsequent cleaning, the cleaning liquid supply pipe 22 may be in a sewage removed state when the rotary brush 23 is positioned on the light receiving surface 100a.

  In the above-described embodiment, the case 21 is swung so that the cleaning liquid supply pipe 22 can be switched between the cleaning state and the sewage removal state. However, the configuration for enabling switching is not limited thereto. For example, the case 21 may be configured to be switched by moving the case 21 in a movement form other than swinging, or may be configured to be switched by changing the position of the cleaning liquid supply pipe 22 or the discharge direction of the cleaning liquid from the cleaning liquid supply pipe 22. It is also possible to do.

  In the said embodiment, although the solar panel cleaning apparatus 1 was made into the self-propelled type which carries out driving control by itself, it is not essential to make the solar panel cleaning apparatus 1 self-propelled. For example, the solar panel cleaning device 1 may be configured to run on rails laid along the cleaning line R. Moreover, you may make it control driving | running | working of the solar panel cleaning apparatus 1 by remote operation. Furthermore, it is not essential that the controller 13 controls the switching between the cleaning state of the cleaning liquid supply pipe 22 and the sewage removal state, and it may be performed remotely or manually.

1 Solar panel cleaning device 21 Case (case member)
22 Cleaning liquid supply pipe (cleaning liquid supply member)
23 Rotating brush (cleaning member)
24 Wiper (cleaning member)
100a Photosensitive surface

Claims (7)

A solar panel cleaning device for cleaning the light receiving surface while traveling on the light receiving surface of the solar panel,
A cleaning liquid supply member for supplying a cleaning liquid to the light receiving surface;
A cleaning member for cleaning the light receiving surface supplied with the cleaning liquid from the cleaning liquid supply member;
A case member surrounding the cleaning liquid supply member;
A solar panel cleaning device comprising:   The solar panel cleaning apparatus according to claim 1, wherein the cleaning member is disposed in the case member.   The solar panel cleaning according to claim 1 or 2, wherein the cleaning liquid supply member is switchable between a cleaning state in which the cleaning liquid is supplied to the light receiving surface and a sewage removal state in which the cleaning liquid is supplied to the cleaning member. apparatus. The cleaning liquid supply member and the cleaning member are both attached to the case member,
The solar panel cleaning apparatus according to claim 3, wherein the cleaning liquid supply member is switched from the cleaning state to the sewage removal state by moving the case member so that the cleaning member is separated from the light receiving surface.   The solar panel cleaning apparatus of Claim 3 or 4 which makes the said washing | cleaning liquid supply member into the said waste water removal state when the said cleaning member is located out of the said light-receiving surface. The cleaning member has a rotating brush in which a brush is spirally wound around a rotating shaft,
6. The rotation direction of the rotating brush is a direction in which the cleaning liquid is directed to a side where an uncleaned region of the light receiving surface exists on the left and right sides in the axial direction of the rotating shaft. Solar panel equipment. As the cleaning member, it has a rotating brush in which a brush is spirally wound around a rotating shaft, and a wiper provided behind the rotating brush,
In the rotating brush, the winding direction of the brush is opposite to the left and right in the axial direction of the rotating shaft,
The solar panel device according to any one of claims 1 to 5, wherein a rotation direction of the rotary brush is a direction in which the cleaning liquid is directed to a center in the axial direction.