Building cleaning methods and cleaning / painting methods

Abstract

We provide a building cleaning method that can streamline and expedite cleaning operations and reduce construction costs. [Solution] A building cleaning method for cleaning the exterior of a building, comprising a cleaning step of cleaning the exterior of the building using a cleaning device that sprays cleaning liquid, and a step of rinsing with water after a certain period of time, wherein the cleaning device has a spraying device that sprays cleaning liquid and an extension pole whose length can be adjusted, and the spraying device is attached to the tip of the extension pole so that the extension pole is the length corresponding to the exterior of the building, and the cleaning liquid is sprayed onto the exterior of the building through the spraying device.

Description

Technical Field

[0001] The present invention relates to a building cleaning method and a cleaning and painting method.

Background Art

[0002] Generally, the cleaning of the outer wall of a building is performed by spraying high-pressure water, but it is necessary to assemble a scaffold around the building. However, in order to assemble the scaffold, many scaffold members are used and the scaffold members need to be assembled. Therefore, the construction period becomes long and the labor cost for cleaning becomes high.

[0003] As a prior art, Patent Document 1 describes a cleaning method in which a gondola is suspended from a building without covering the outer wall of the building with a curing sheet, and the outer wall of the building is cleaned by wiping with a brush impregnated with water or a cleaning agent by an operator on the gondola.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The cleaning according to Patent Document 1 requires a great deal of work burden on the operator due to the wiping work using the brush of the operator, and also requires a long time for cleaning. Further, labor saving, speed up of the cleaning work, and reduction of the labor cost are desired.

[0006] An object of the present invention is to provide a building cleaning method capable of achieving labor saving, speed up of the cleaning work, and reduction of the labor cost.

Means for Solving the Problems

[0007] A cleaning method according to one aspect of the present invention is a building cleaning method for cleaning the exterior of a building, comprising a cleaning step of cleaning the exterior of a building using a cleaning device that sprays a cleaning solution, and a step of leaving it for a certain period of time and then rinsing it off with water. The cleaning device comprises a blower for spraying cleaning liquid and an extension pole whose length can be adjusted. The blower is attached to the tip of the extension pole, and the extension pole is set to a length corresponding to the outside of the building, thereby spraying the cleaning liquid to the outside of the building through the blower.

[0008] In this way, by using an extension pole whose length can be adjusted, cleaning work can be performed from the ground regardless of the height of the area to be cleaned on the exterior of the building. In other words, this method makes it possible to clean without the need for scaffolding, thus saving labor, speeding up the cleaning work, and reducing construction costs. The spraying device can be, for example, a brush as described later, or a sprayer or atomizer for the cleaning solution, or a mop, as long as it is a device that can spray cleaning solution.

[0009] Furthermore, this cleaning method is characterized in that the cleaning solution contains sodium hypochlorite. Because it contains sodium hypochlorite, dirt on the exterior of the building can be efficiently removed through cleaning.

[0010] Furthermore, this cleaning method is characterized in that the cleaning solution contains 1-3% sodium hypochlorite. In this way, dirt on the exterior of the building can be efficiently removed by cleaning.

[0011] Furthermore, it is desirable that the cleaning solution in this cleaning method also contains a surfactant. In this way, the cleaning effect is enhanced by the inclusion of a surfactant.

[0012] Furthermore, it is desirable that the cleaning solution in this cleaning method contains an odor-reducing agent that reduces the odor of chlorine, or a lemon-scented additive. This reduces the impact of the cleaning solution's odor on the surrounding area.

[0013] Furthermore, this cleaning method is characterized in that the cleaning solution is sprayed in a foamy state. By doing so, since the cleaning solution is sprayed in a foamy state, splashing of the cleaning solution into the surroundings is avoided, and the degree of cleaning is improved compared to cleaning with liquid alone.

[0014] Furthermore, this cleaning method is characterized in that the cleaning device comprises the blowing device, the extension pole, a storage section for storing cleaning liquid, and a supply tube for supplying cleaning liquid from the storage section to the blowing device.

[0015] In this way, the cleaning solution can be smoothly supplied from the storage unit to the blower through the supply tube. The storage unit includes a storage tank or reservoir capable of storing the cleaning solution, as well as buckets and the like.

[0016] Furthermore, this cleaning method is characterized in that the blowing device has a support part to which the supply tube is connected, a brush part in which a bundle of bristles is planted in the support part, and a coupling part provided in the support part and coupled to the tip of the extension pole, and the support part is supplied with cleaning liquid from the supply tube through the support part to the brush part.

[0017] In this way, the cleaning solution can be uniformly supplied to the brush part through the support part, allowing for smooth cleaning.

[0018] Furthermore, this cleaning method is characterized in that the support portion comprises a supply port on the rear side for supplying cleaning fluid from the supply tube, and a discharge port on the front side for discharging cleaning fluid to the brush portion.

[0019] Further, this cleaning method is characterized in that the supply tube has a tube main body through which the cleaning liquid from the storage part is conveyed, and a plurality of tube branch parts that branch from the tube main body and are thinner than the tube main body.

[0020] In this way, the cleaning liquid can be supplied to a plurality of locations of the support part by a plurality of tubes, so that the cleaning liquid is uniformly supplied to the brush part through the support part, and uniform cleaning without unevenness becomes possible.

[0021] Further, this cleaning method is characterized in that the support part has a plurality of the supply ports and discharge ports, and each tube branch part is connected to each supply port. In this way, the uniform supply of the cleaning liquid to the brush part is further promoted by the plurality of supply ports and discharge ports, and more uniform cleaning without unevenness becomes possible.

[0022] Further, this cleaning method is characterized in that the support part is configured in a horizontally long flat plate shape, and the plurality of supply ports and discharge ports are arranged side by side at predetermined intervals. In this way, the supply of the cleaning liquid becomes more uniform, and the cleaning efficiency is further improved.

[0023] Further, this cleaning method is characterized in that the cleaning tool further includes a pump arranged in the middle of the supply tube, and the cleaning liquid is pressure-fed from the storage part to the blowing tool through the supply tube. In this way, the cleaning liquid from the storage part can be pressure-fed by the pump, so that the supply of the cleaning liquid to the blowing part at a high position becomes smooth.

[0024] Further, this cleaning method is characterized in that the cleaning tool further includes a valve arranged in the middle of the supply tube, and the valve is a control valve that controls the flow rate of the paint by a push operation or a trigger operation of an operator. In this way, the flow rate of the cleaning liquid can be controlled by a simple operation of the operator, so that the supply of the necessary cleaning liquid can be easily performed, and the supply of excess cleaning liquid can be avoided.

[0025] The cleaning and painting method according to one aspect of the present invention further includes a painting step of painting the exterior of a building using a painting tool for applying paint after the cleaning step and the step of rinsing with water. Thus, the cleaning and painting of the building can be smoothly performed without requiring a scaffold.

[0026] Further, in this cleaning and painting method, the painting tool includes an applicator, a paint tank, a painting extension pole, and a paint supply tube for supplying paint from the paint tank to the applicator. The applicator has a paint supply section for uniformly dispersing and supplying the paint, a painting section to which the paint is supplied from the paint supply section and which applies the paint, and a coupling section provided in the paint supply section and coupled to the tip of the painting extension pole, and the paint is supplied from the paint supply section to the painting section.

[0027] In this way, it is possible to perform the cleaning and painting of the exterior of the building from the ground or a low position without using a scaffold or gondola. Also, the paint can be smoothly supplied from the paint tank to the applicator through the paint supply tube.

[0028] Further, in this cleaning and painting method, the paint supply section includes a supply port through which the paint is supplied via the paint supply tube, and a discharge port for supplying the paint to the painting section. In this way, once the paint is supplied from the supply port to the supply section, and then the paint is supplied from the discharge port to the painting section, so that the paint is uniformly dispersed and applied to the painting section without unevenness.

[0029] Further, in this cleaning and painting method, the paint supply section has a flat plate section having the discharge port, and a convex portion protruding to the rear side of the discharge section. The convex portion has a supply chamber inside, the supply port is connected to the supply chamber, a horizontally long slit is formed in the flat plate section, the slit communicates with the supply chamber, and is configured as the discharge port, and the paint is supplied to the painting section through the slit.

[0030] In this way, the paint is first supplied from the supply port to the supply chamber of the supply unit, and then supplied to the coating unit from the horizontally elongated discharge port (slit), so that the paint is evenly dispersed and applied evenly to the coating unit.

[0031] Furthermore, this cleaning and painting method is characterized in that multiple supply chambers are formed inside the protrusion, and multiple supply ports are provided, with each supply port connected to each supply chamber, and multiple slits are formed in the flat plate portion, with each slit positioned to correspond to each supply chamber.

[0032] In this configuration, multiple supply chambers are built into the protruding portion of the supply unit, and each of these supply chambers is connected to a paint supply port. Slits are formed in the flat plate portion, which serves as the discharge port, at positions corresponding to these supply chambers. This allows for smooth supply and distribution of paint in each chamber, promoting a uniform supply of paint to the coating area.

[0033] Furthermore, this cleaning and painting method is characterized in that the coating section is provided around a shaft member configured parallel to the flat plate section, and is a cylindrical coating roller that can rotate around the shaft member. In this way, paint is supplied uniformly to the coating roller, and the exterior of the building can be painted by rolling the coating roller, making it less likely for unevenness to occur. [Effects of the Invention]

[0034] This invention allows cleaning work to be performed from the ground, regardless of the height of the area to be cleaned on the exterior of a building, without the need for scaffolding or gondolas. Therefore, it can streamline and expedite cleaning work and reduce construction costs. [Brief explanation of the drawing]

[0035] [Figure 1] This is a perspective view of a cleaning device used in the building cleaning method according to the present invention. [Figure 2] This figure shows another example of the blowing device of the aforementioned cleaning device. [Figure 3]This is an explanatory diagram of the paint supply equipment used in the painting process that follows the cleaning process. [Figure 4] The image shows the supply section of the paint supply device, with (a) being a front view and (b) being a top view. [Modes for carrying out the invention]

[0036] The present invention will be described below with reference to the drawings, but the present invention is not limited thereto. In this embodiment, an example of a building with two to three stories will be used for the description. The exterior of the building includes exterior walls (for example, any type of siding wall such as ceramic or metal, plaster walls, volcanic ash walls, diatomaceous earth walls, etc.), roofs, blocks, concrete retaining walls, concrete floors, wooden decks, etc.

[0037] (1. Washing process) First, prior to the painting process, a cleaning process is carried out to wash the exterior of the building. Note that, in addition to being performed prior to the painting process, if the exterior walls of the building are to be painted the same color as the existing walls, and the exterior walls are already a good color and painting is unnecessary at the end of the cleaning process, the process can be completed with just the cleaning work.

[0038] As shown in Figure 1, the exterior cleaning of the building is performed using a cleaning device 1 that sprays cleaning solution. After cleaning the exterior of the building, it is left for a certain period of time, then rinsed with water and dried to complete the process.

[0039] In this case, the cleaning solution contains a surfactant in addition to sodium hypochlorite to enhance the cleaning effect, and the sodium hypochlorite content of the cleaning solution is set to 1-3% to reduce costs.

[0040] Next, the cleaning device 1 used in the cleaning process will be described. As shown in Figure 1, the cleaning device 1 mainly consists of a blower 2 that sprays a cleaning solution containing sodium hypochlorite and an extension pole 3 whose length can be adjusted. In addition, the cleaning device 1 also includes a cleaning solution tank 4 for storing the cleaning solution and a supply tube 5 for supplying the cleaning solution from the cleaning solution tank 4 to the blower 2.

[0041] The cleaning work is carried out by attaching a blower 2 to the tip of an extension pole 3, which has been adjusted to the length corresponding to the area to be cleaned on the exterior of the building. In principle, the cleaning work is carried out from the top to the bottom of the building using the cleaning equipment 1 from the ground, but if the blower 2 cannot reach the top of the building, the worker may stand on a step stool or similar to perform the work.

[0042] The blowing device 2 has a horizontally elongated support section 2a to which a supply tube 5 for supplying cleaning solution is connected at the rear, a brush section 2b on the front side of the support section 2a with small bundles of bristles uniformly planted throughout, and a connecting section 2c provided on the support section 2a and connected to the tip of the extension pole 3.

[0043] Note that the spraying device 2 equipped with the brush section 2b is just one example, and different types of spraying devices can be used depending on the cleaning location. In addition to the brush-type structure shown in Figure 1, the spraying device can also be a cylindrical structure as shown in Figure 2, a spray type without bristles, or a liquid or foam spray type.

[0044] Furthermore, the supply tube 5 has a main supply tube section 5a that transports the cleaning fluid from the cleaning fluid tank 4, and four thinner supply tube branch sections 5b that branch off midway. The four supply tube branch sections 5b are connected to supply ports that are arranged at predetermined intervals in the lateral direction of the horizontally elongated support section 2a. With this configuration, the cleaning fluid from the supply tube 5 is uniformly supplied into the brush section 2b.

[0045] In other words, four supply tube branches 5b of the supply tube 5 are connected to the support section 2a to which the brush section 2b is attached and supported, and the cleaning solution is supplied to the support section 2a through the four supply tube branches 5b so that it reaches the entire brush section 2b. The cleaning solution contains an odor-reducing agent or a lemon-scented additive to reduce the odor of chlorine, preventing the odor from spreading to the surroundings.

[0046] Furthermore, a supply pump 6 is connected to the main body 5a of the supply tube 5. This supply pump 6 pumps the cleaning fluid from the cleaning fluid tank 4 to the supply tube 5.

[0047] This allows the extension pole 3 to be connected, and the cleaning solution to be smoothly supplied through the supply tube 5 to the sprayer 2 located at a higher position. Then, the cleaning solution can be sprayed through the sprayer 2 while the brush part 2b scrubs, cleaning the exterior of the building, such as the outer walls.

[0048] After cleaning the entire exterior of the building, it is left to stand for a certain period of time. Then, the supply tube 5 that supplies the cleaning solution is replaced with a watering hose (not shown) that supplies water. The cleaning solution adhering to the cleaned areas is rinsed off with water, and then the area is dried. This completes the cleaning process.

[0049] According to the method described above, there is no need to use large-scale equipment such as scaffolding or gondolas, and biological contaminants (moss, mold, etc.), non-biological contaminants (sand, dust, etc.), and exhaust fumes on the exterior of the building can be removed by cleaning as a preliminary step before painting.

[0050] Furthermore, the cleaning device 1 of this embodiment can clean at a height of 5m-6m by connecting multiple extension poles 3. In the case of a detached house, it is possible to clean a house of about 2-3 stories.

[0051] Furthermore, the structure of the blowing device is not particularly limited, and as shown in Figure 2, the blowing device 7 may have a brush part 7b provided on a cylindrical support part 7a. The shapes of the connecting part 7c and the support part 7a may also be different from those of the blowing device 2 described above. In addition, the cleaning liquid tank 4 is not limited to a tank; a bucket or the like can also be used.

[0052] (2. Painting process) Next, the painting process will be explained. Similar to the cleaning process described above, the painting process in this embodiment allows for painting the exterior of the building without the use of scaffolding.

[0053] The painting process involves painting the exterior of the building, such as the outer walls, using a painting device 11. As shown in Figure 3, the painting device 11 has an applicator 12 for applying the paint. The paint used in the painting device 11 is diluted and formulated according to the properties of the exterior of the building to be painted, and has a viscosity that allows it to be smoothly supplied to the applicator 12. In this embodiment, as an example of paint, a paint is used that is diluted by adding 20% ​​or less of water to a paint concentrate with a viscosity of 1700-2000 mPa·s, which is composed of polyurethane resin, amine, N-methylpyrrolidone, ethylene glycol, and water.

[0054] It is also possible to use the paint concentrate as is. By using a paint concentrate of this viscosity, or by adding 20% ​​or less of water, it becomes possible to smoothly supply the paint from the paint tank to the application area.

[0055] Furthermore, the above is just an example, and the viscosity of the paint concentrate used can be 1400-2000 mPa·s. It is best to use the concentrate as is or add 20% or less of water to achieve a viscosity of 1100-2000 mPa·s. If the paint viscosity is less than 1100 mPa·s, smudging and dripping may occur, resulting in poor coloring and an unsightly finish. If it exceeds 2000 mPa·s, the smooth supply of paint to the application area may be hindered. In addition, since this paint can be mixed with clear paint and colored paint, it is possible to paint with a wide range of colors.

[0056] In addition to the applicator 12 described above, the painting apparatus 11 mainly comprises an extension pole 13 whose length can be adjusted to which the applicator 12 is attached, a paint tank 14 for storing paint, and a supply tube 15 for supplying paint. A control valve 16 for controlling the flow rate of paint is also attached to the middle of the supply tube 15.

[0057] By adjusting the paint flow rate with the control valve 16, even an amateur can perform efficient painting work. Similar to the cleaning process, painting is generally done from the top to the bottom of the building using the painting equipment 11 from the ground. However, if the applicator 12 cannot reach the upper part of the building, the worker can stand on a step stool or similar to perform the work.

[0058] Furthermore, the paint tank 14 has a storage section 14a for storing paint and a pump section 14b. The pump section 14b can pump and supply the paint. When using a conventional paint tank that does not have a pump section, it is also possible to use well-known means such as a manual pump, a pressure accumulator, a compressor, or a compressed air line as a paint supply means.

[0059] Furthermore, the applicator 12 includes an applicator roller 12A with a cylindrical applicator section around a shaft member, a supply section 12B that uniformly distributes and supplies paint to the applicator section around the applicator roller 12A, and a coupling section 12C that is coupled to the tip of the extension pole 13. An appropriate amount of paint is supplied to the supply section 12B through a supply tube 15, and the paint is dispersed laterally in the supply section 12B.

[0060] Furthermore, the supply tube 15 has a main tube portion 15a connected to the paint tank 14, and two thinner tube branch portions 15b that branch off midway. The two supply tube branch portions 15b are connected to two connection portions 12Bd of a protrusion 12Bb of the supply unit 12B, which will be described later, and paint is supplied in this configuration, with paint from the supply tube 15 being supplied to the supply unit 12B.

[0061] As shown in Figures 4(a) and 4(b), the supply unit 12B has a flat plate portion 12Ba located on the side of the coating roller 12A, and a protrusion 12Bb that extends from the flat plate portion 12Ba to the opposite side of the coating roller 12A. Inside the protrusion 12Bb, there is an elongated hollow supply chamber 12Bc divided into two sections, and two cylindrical connecting portions 12Bd protrude outwards, communicating with each supply chamber 12Bc which serves as a paint supply port.

[0062] Furthermore, each flat plate portion 12Ba has an elongated slit 12Be that communicates with each supply chamber 12Bc. These slits 12Be serve as paint discharge ports, and the paint is uniformly supplied and dispersed to the coating portion of the coating roller 12A through the slits 12Be.

[0063] Then, the appropriate amount of paint that leaks uniformly from the slit 12Be is scooped up by the outer circumference of the coating part of the coating roller 12A. Due to the moisture-absorbing and cushioning properties of the coating part, the exterior of the building is painted evenly during painting, and paint drips are avoided, so even an amateur can perform painting work efficiently.

[0064] Furthermore, since the paint flow rate can be adjusted by the control valve 16, the amount of paint supplied to the supply unit 12B, that is, the amount supplied to the application unit of the application roller 12A, can be adjusted, thereby suppressing uneven painting and paint dripping.

[0065] In this embodiment, the amount of paint corresponding to the exterior area of ​​the building is prepared in advance with a dilution ratio appropriate to the application target and stored in the paint tank 14. Since only the required amount needs to be prepared, it is advantageous in terms of cost.

[0066] Furthermore, the painting equipment 11 of this embodiment can paint at a height of 5m-6m by connecting multiple extension poles 13. For a detached house, it is possible to paint a house of about 2-3 stories.

[0067] Conventional painting processes require the installation of scaffolding or gondolas and the skills of skilled craftsmen. However, in this embodiment, even amateurs without professional-level skills can paint the exterior of a building. The same applies to cleaning the exterior of a building.

[0068] Furthermore, since cleaning and painting can be performed up to a certain height on the exterior of a building without the need for scaffolding or gondolas, labor savings, speed improvements, and cost reductions can be achieved. For example, a construction period that previously took about 14 to 20 days can be reduced to about 3 to 7 days with this embodiment, and costs that previously took about 1.5 million to 3 million yen can be cut to about 500,000 yen with this embodiment.

[0069] As described above, preferred embodiments of the present invention have been explained, but various additions, modifications, or deletions are possible without departing from the spirit of the present invention.

[0070] For example, in this embodiment, the cleaning solution can be sprayed onto the exterior of the building in a foamy state to prevent splashing into the surrounding area. In this case, the spraying device for the cleaning solution is equipped with a foam generator that froths the cleaning solution into a foamy state. Also, in the cleaning process, as in the case of painting, it is possible to install a control valve in the middle of the supply tube to control the flow rate of the cleaning solution. [Explanation of Symbols]

[0071] 1. Cleaning equipment 2 Blowout tool 2a Support part 2b Brush part 2c joint 3 Extension poles 4. Cleaning solution tank 5. Supply tube 5a Tube body 5b Tube branch 6. Supply pump 7. Blower (modified version) 7a Support part 7b Brush section 7c joint 11 Painting equipment 12 Applicator 12A Coating Roller 12B Supply section 12Ba flat plate part 12Bb protrusion 12Bc supply room 12Bd Connection port (supply port) 12Be Slit (Discharge Port) 13 Extension poles 14 Paint Tanks 14a Storage section 14b Pump section 15. Supply tube 15a Tube body 15b Tube branch 16 Control valves

Claims

1. This is a building cleaning method that cleans the exterior of a building. A cleaning process that involves cleaning the exterior of a building using a cleaning device that sprays cleaning solution, The process includes leaving it for a certain period of time and then rinsing it off with water. The aforementioned cleaning device is A sprayer that dispenses cleaning solution, It has an extension pole whose length can be adjusted, The blower is attached to the tip of the extension pole, The extension pole is set to a length corresponding to the exterior of the building, and the cleaning solution is sprayed onto the exterior of the building through the spraying device. Building cleaning methods.

2. The aforementioned cleaning solution contains sodium hypochlorite. The method for cleaning a building according to claim 1.

3. The cleaning solution has a sodium hypochlorite content of 1 to 3%. The method for cleaning a building according to claim 2.

4. The cleaning solution further contains a surfactant. The method for cleaning a building according to claim 2.

5. The cleaning solution contains an odor-reducing agent or a lemon-scented additive to reduce the odor of chlorine. The method for cleaning a building according to claim 2.

6. The cleaning solution is sprayed in a foamy state. The method for cleaning a building according to claim 1.

7. The aforementioned cleaning device is The aforementioned blowing device, The aforementioned extension pole and, A storage section for storing cleaning solution, A supply tube that supplies cleaning fluid from the storage section to the blowing device, A feature comprising: The method for cleaning a building according to claim 1.

8. The aforementioned blowing device is The support portion to which the supply tube is connected, The brush section, in which a bundle of bristles is planted in the support section, A connecting portion provided on the support portion and coupled to the tip of the extension pole, It has, The aforementioned support portion is The cleaning solution is supplied from the supply tube through the support part to the brush part. The method for cleaning a building according to claim 7.

9. The aforementioned support portion is The rear side has a supply port from which cleaning fluid is supplied from the supply tube, The front side of the brush section has a discharge port for discharging cleaning fluid, A feature comprising: The method for cleaning a building according to claim 8.

10. The aforementioned supply tube is The main tube portion through which the cleaning liquid from the storage portion is transported, It has multiple tube branches that are thinner than the main tube body and branch out from the main tube body. The method for cleaning a building according to claim 9.

11. The aforementioned support portion is The system comprises multiple supply ports and discharge ports. Each tube branch is connected to each supply port. The method for cleaning a building according to claim 10.

12. The support portion is configured in the shape of a horizontally elongated flat plate, Multiple supply ports and discharge ports are arranged side by side at predetermined intervals. The method for cleaning a building according to claim 11.

13. The aforementioned cleaning device is The supply tube is further equipped with a pump located in the middle of the tube. The cleaning liquid is characterized in that it is pumped from the storage unit to the blowing device via the supply tube. The method for cleaning a building according to claim 7.

14. The aforementioned cleaning device is The supply tube further comprises a valve located in the middle of the tube. The aforementioned valve is A control valve characterized by controlling the flow rate of paint through a push or trigger operation by the operator. The method for cleaning a building according to claim 7.

15. After the washing step and the rinsing step with water, The painting process further includes painting the exterior of a building using painting equipment for applying paint. A method for cleaning and painting a building according to any one of claims 1 to 14.

16. The aforementioned painting equipment is Applicator and Paint tank and Painted extension poles, The system includes a paint supply tube that supplies paint from the paint tank to the applicator, The aforementioned applicator is A paint supply unit that uniformly disperses and supplies the aforementioned paint, Paint is supplied from the aforementioned paint supply unit, and the coating unit applies the paint, The paint supply unit has a coupling portion that is connected to the tip of the paint extension pole, The paint supply unit supplies paint to the coating unit. The method for cleaning and painting a building according to claim 15.

17. The aforementioned paint supply unit is A supply port through which paint is supplied via the aforementioned paint supply tube, A discharge port for supplying paint to the coating section, A feature comprising: The method for cleaning and painting a building according to claim 16.

18. The aforementioned paint supply unit is A flat plate portion having the aforementioned discharge port, The discharge portion has a protrusion that protrudes from the rear side, The aforementioned protrusion has a supply chamber inside, The supply port is connected to the supply chamber, A horizontally elongated slit is formed in the flat plate portion, the slit communicates with the supply chamber and is configured as the discharge port, and paint is supplied to the coating portion through the slit. The method for cleaning and painting a building according to claim 17.

19. Multiple supply chambers are formed inside the aforementioned protrusion. The aforementioned supply port has multiple ports, and each supply port is connected to each supply chamber. The flat plate portion has multiple slits formed therein, with each slit positioned to correspond to each supply chamber. The method for cleaning and painting a building according to claim 18.

20. The coating portion is provided around the shaft member which is configured parallel to the flat plate portion. The coating roller is configured in a cylindrical shape that can rotate around the aforementioned shaft member. The method for cleaning and painting a building according to claim 19.

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