Dust deposition prevention mounting structure and photovoltaic module

Abstract

The utility model discloses an anti-dust-deposition mounting structure and a photovoltaic module, the anti-dust-deposition mounting structure comprises a first component and a second component, the first component and the second component are suitable for cooperatively fixing a fixed object, the first component is suitable for supporting the fixed object, the second component comprises a first end and a second end, the first end is suitable for being connected with the first component, and the second end is suitable for being connected with the second component. And the second end is matched with the upper surface of the fixed object, a drainage face is arranged at the second end, one end of the drainage face is suitable for being matched with the upper surface of the fixed object, and the other end of the drainage face is suitable for crossing the edge of the fixed object and extending in the direction of the first end. When the photovoltaic module is applied, the power generation efficiency can be improved, and the hot spot risk of the photovoltaic module is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic accessories, in particular to a dust accumulation prevention mounting structure and a photovoltaic module. BACKGROUND

[0002] A photovoltaic module (also called a solar panel) is one of the core parts of a photovoltaic power generation system. The photovoltaic module is generally arranged in an outdoor environment and is directly affected by external environmental factors, especially rain, snow and dust. Therefore, the photovoltaic module is generally designed to guide and drain water to help the water accumulated on the power generation surface (generally the upper surface) of the photovoltaic module to drain away, and the dust on the power generation surface is also removed.

[0003] However, due to the height difference between the frame of the photovoltaic module and the power generation surface of the photovoltaic module, dust will accumulate at the junction of the frame and the photovoltaic module after water flow washing, which will cause the following problems: dust blocking will affect the power generation of the photovoltaic module, and local dust blocking is prone to hot spot phenomenon, which will further cause the risk of component damage. Therefore, the market has appeared photovoltaic modules with no frame design to improve this problem.

[0004] However, the inventors have realized that the related mounting method of the photovoltaic module without a frame has the following defects: even if the photovoltaic module without a frame, a small amount of water will still remain on the edge of the photovoltaic module after a large amount of water flow, due to the problem of water tension. These water stains not only damage the film layer of the glass and reduce the light transmittance after being irradiated by sunlight, but also carry dust and form stubborn dust accumulation after drying, leaving a layer of dust marks, which will cause dust accumulation on the edge of the photovoltaic module. SUMMARY

[0005] One or more embodiments of the present application provide a dust accumulation prevention mounting structure and a photovoltaic module to solve or at least partially alleviate the dust accumulation on the edge of the photovoltaic module.

[0006] The technical solution adopted by the present application is as follows: a dust accumulation prevention mounting structure, comprising a first component and a second component, the first component and the second component are adapted to cooperate to fix a fixed object, the first component is adapted to support the fixed object, the second component comprises a first end and a second end, the first end is adapted to be connected with the first component, and the second end is adapted to cooperate with the upper surface of the fixed object, a drainage surface is arranged on the second end, one end of the drainage surface is adapted to be adapted to the upper surface of the fixed object, and the other end of the drainage surface is adapted to extend to the first end direction beyond the edge of the fixed object.

[0007] In some embodiments, the first component is provided with a protection part, the inner side of the protection part is adapted to cooperate with the side of the fixed object, the second component is located on the outer side of the protection part, and the end of the drainage surface extending in the direction of the first end is adapted to extend along the outer side of the protection part and form a drainage channel in cooperation with the protection part.

[0008] In some embodiments, the top end of the protection part is in contact with the side of the fixed object and is lower than the upper surface of the fixed object; the inner side of the protection part is recessed inward to form a filling cavity, the protection part is provided with a first plane above the filling cavity, and the first plane is adapted to be in close contact with the side of the fixed object; the distance between the upper end point of the filling cavity and the side of the fixed object is smaller than the distance between the lower end point of the filling cavity and the side of the fixed object; the first component is provided with a base, the outer side of the protection part is provided with a second plane, and the base is located in the same plane as the second plane on one side of the protection part.

[0009] In some embodiments, the first component is provided with a first joint part, the second end is adapted to be in contact with the upper surface of the fixed object and limit the mutual separation of the first joint part and the second joint part when the first joint part and the second joint part are combined, the second component is U-shaped, the included angle between the combination direction of the first joint part and the second joint part and the plane adapted to the fixed object is an acute angle, and the first joint part and the second joint part are provided with a rack structure.

[0010] In some embodiments, the first component is provided with a slot, and the first end is adapted to be inserted into the slot so that the second end at least partially covers the fixed object.

[0011] In some embodiments, the slot is arranged in an embedded form on the side of the first component close to the second component, the first end is bent in the direction of the second end to form a latch structure, and the latch structure is adapted to be inserted into the slot in cooperation.

[0012] In some embodiments, the width of the side of the slot close to the fixed object is greater than the width of the side of the slot away from the fixed object, part or all of the first end is adapted to form a notch structure, the notch structure is adapted to be inserted into the slot in cooperation, the side of the slot away from the fixed object is an open structure, at least part of the first end is adapted to be located in the slot, at least part of the first end is adapted to be located outside the slot so that the first end and the slot are locked together, and the slot is opened on the protection part.

[0013] In some embodiments, the first component is provided with a support portion adapted to support the lower surface of the fixed object, and / or the support portion is provided with a plurality of spaced-apart accommodating grooves; the support portion forms a support body between adjacent two accommodating grooves; and / or the top of the support body is arc-shaped.

[0014] In some embodiments, the number of the second components is a plurality, and the second components are adapted to be mounted along the length direction of the first component; the hardness of the second components is less than the hardness of the upper surface of the fixed object.

[0015] A photovoltaic module comprising the anti-dust mounting structure according to any one of the above.

[0016] Compared with the prior art, the anti-dust mounting structure and the photovoltaic module according to the present application have the beneficial effects that by optimizing the structure and cooperation connection mode of each component, the anti-dust mounting structure and the photovoltaic module according to the present application can realize the edgeless mounting and fixation of the photovoltaic module, and at the same time, the water tension is destroyed by the structure design of the drainage surface at the edge of the photovoltaic module, so as to guide the water flow carrying dust to flow down from the edge, reduce the water and dust accumulation phenomenon at the edge of the photovoltaic module, and thus improve the power generation efficiency of the photovoltaic module and reduce the hot spot risk of the photovoltaic module. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a combined schematic view of the mounting structure and the photovoltaic module according to some embodiments of the present application.

[0018] Figure 2 is a combined schematic view of the mounting structure and the photovoltaic module according to some embodiments of the present application. Figure 1 is an enlarged view of a in the above.

[0019] Figure 3 is a connection schematic view of the first component and the second component according to some embodiments of the present application.

[0020] Figure 4 is an overall structure view of the first component according to some embodiments of the present application.

[0021] Figure 5 is a mounting schematic view of a single second component according to some embodiments of the present application.

[0022] Figure 6 is an overall mounting schematic view according to some embodiments of the present application.

[0023] Figure 7 is a connection schematic view of the first component and the second component according to some other embodiments of the present application.

[0024] Figure 8 is a mounting schematic view of a single second component according to some other embodiments of the present application.

[0025] Figure 9 is a separated schematic view of the first component and the second component according to some other embodiments of the present application.

[0026] Figure 10 is a connected schematic view of the first component and the second component according to some other embodiments of the present application.

[0027] In the figure: 1, first component; 11, protection part; 111, filling cavity; 112, first plane; 113, second plane; 12, base; 13, support part; 131, containing groove; 132, support body; 14, first combining part; 15, insertion slot; 2, second component; 21, first end; 22, second end; 221, drainage surface; 222, bolt structure; 223, notch structure; 23, second combining part; 3, fixed object; 31, photovoltaic assembly; 4, drainage channel. DETAILED DESCRIPTION

[0028] Hereinafter, the present application will be further described in conjunction with specific embodiments, it should be noted that, in the absence of conflict, the following description of each embodiment or each technical feature can be combined to form a new embodiment.

[0029] In the description of the present application, it should be noted that, for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0030] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0031] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0032] The present application will be further described in conjunction with the accompanying drawings:

[0033] As Figures 1 to 10 shown, one or more embodiments of the present application provide a dust accumulation prevention mounting structure, comprising a first component 1 and a second component 2, the first component 1 and the second component 2 are adapted to cooperate to fix a fixed object 3, the fixed object 3 can be a plate-shaped object such as a photovoltaic module 31 or glass, and the dust accumulation prevention mounting structure can realize edgeless connection and fixation, and better drainage effect.

[0034] As Figures 1 to 6 shown in the embodiment, the edgeless form of the first component 1 can be manifested as a reduced A-frame, the first component 1 is adapted to support the fixed object 3, the second component 2 includes a first end 21 and a second end 22, the first end 21 is adapted to be connected with the first component 1, and the second end 22 is adapted to cooperate with the upper surface of the fixed object 3, the second component 2 can play a fixing role, through the connection of the first end 21 and the first component 1, the second end 22 can limit the fixed object 3 from moving away and separating from the first component 1, thereby realizing the installation and fixation of the fixed object 3 on the first component 1.

[0035] As Figures 1 to 3 shown in the embodiment, the second end 22 is provided with a drainage surface 221, one end of the drainage surface 221 is adapted to be adapted to the upper surface of the fixed object 3, and the other end of the drainage surface 221 is adapted to extend beyond the edge of the fixed object 3 and extend to the second end 22, it can be understood that the drainage surface 221 is used to receive the water flow to the second end 22 and can guide the water flow, break the surface tension of the water flow, and make the water flow flow smoothly over the edge of the fixed object 3 for automatic drainage.

[0036] When the drainage surface 221 is adapted to the upper surface of the fixed object 3, the drainage surface 221 and the upper surface of the fixed object 3 can have a small gap, and the water flow to the second end 22 can be in contact with the drainage surface 221, so that the water flow which should form a stable tension at the edge of the fixed object 3 is affected and broken by the drainage surface 221, so that the water flow can flow down along the drainage surface 221 from the second component 2, and the dust carried by the water flow can be discharged at the same time, greatly reducing the accumulation of water flow and dust at the edge of the fixed object 3.

[0037] As Figures 1 to 3 shown in the embodiment, the first component 1 is provided with a protection part 11, the inner side of the protection part 11 is adapted to cooperate to fix the side of the fixed object 3, the setting of the protection part 11 can increase the contact and fixation area of the first component 1 and the fixed object 3, increase the fixation effect of the side of the fixed object 3, and effectively improve the connection stability between the first component 1 and the fixed object 3.

[0038] The second component 2 is located outside the protective part 11. One end of the drainage surface 221 extending towards the first end 21 is adapted to extend along the outside of the protective part 11 and cooperate with the protective part 11 to form a drainage channel 4. Specifically, when the first end 21 is connected to the first component 1 and the second end 22 is adapted to the upper surface of the fixed object 3, there is a certain amount of gap between the drainage surface 221 and the protective part 11 to form a drainage channel 4, which can guide the water flow discharged from the drainage surface 221 to continue to be discharged from the drainage channel 4. During this process, the protective part 11 can contact the water flow on the drainage surface 221 and break its surface tension to further achieve smooth drainage.

[0039] like Figure 2 In the embodiment shown, the top of the protective part 11 is in contact with the side of the object to be fixed 3, and the protective part 11 is lower than the upper surface of the object to be fixed 3. The height of the top of the protective part 11 gradually decreases outward, which can improve the smoothness of the drainage channel 4 while reducing the obstruction structure formed by the protective part 11 on the side of the object to be fixed 3, thereby reducing the tension formed by the water flow on the side of the object to be fixed 3.

[0040] It is worth noting that the height difference between the top of the protective part 11 and the upper surface of the object being fixed 3 should not be too large, so as to prevent the water flow from forming a new stable tension and dust accumulation area between the top of the protective part 11 and the upper surface of the object being fixed 3.

[0041] like Figures 2 to 4 In the illustrated embodiment, the inner side of the protective part 11 is recessed to form a filling cavity 111. The filling cavity 111 is suitable for filling with adhesives such as silicone to connect and fix the protective part 11 and the side of the object to be fixed 3. The protective part 11 has a first plane 112 formed above the filling cavity 111. The first plane 112 is suitable for fitting with the side of the object to be fixed 3. The structure of the protective part 11 with the first plane 112 above and the filling cavity 111 below can reduce the contact area of ​​the protective part 11, reduce the fitting difficulty, and improve the fit between the protective part 11 and the side of the object to be fixed 3.

[0042] like Figure 4 In the embodiment shown, the distance between the upper end point of the filling cavity 111 and the side of the fixed object 3 is less than the distance between the lower end point of the filling cavity 111 and the side of the fixed object 3. This allows the lower part of the protective part 11 to be filled directly with adhesive without considering the fit between it and the side of the fixed object 3, thereby reducing the processing accuracy and processing difficulty of the first component 1 and facilitating production.

[0043] like Figure 4In the embodiment shown, the filling cavity 111 is shaped with the upper part inwardly tapered and the lower part outwardly tapered, which can achieve a larger amount of silica gel filling to reduce the penetration of water vapor to the edge side glue connecting area of the fixed object 3.

[0044] As Figure 4 In the embodiment shown, the first component 1 is provided with a base 12, the outer side of the protection part 11 is provided with a second plane 113, and the side of the base 12 close to the protection part 11 is located in the same plane as the second plane 113, which can make the contact force between the first component 1 and the packaging tape uniform during packaging and transportation, and improve the structural stability of the first component 1 during transportation.

[0045] As Figure 4 In the embodiment shown, the first component 1 is provided with a support part 13, which is adapted to be mutually attached to the lower surface of the fixed object 3 and to support the lower surface of the fixed object 3, and a plurality of spaced apart accommodating grooves 131 are arranged on the support part 13, which are used to accommodate adhesives such as silica gel, and the accommodating grooves 131 can increase the amount of silica gel filled between the fixed object 3 and the support part 13 to improve the adhesion between the two.

[0046] As Figure 4 In the embodiment shown, the support part 13 forms a support body 132 between the two adjacent accommodating grooves 131, and the top of the support body 132 is arc-shaped, which can improve the uniformity of supporting the fixed object 3, and also enable the silica gel to fully contact the fixed object 3 to achieve a more firm bonding effect.

[0047] As Figure 6 In the embodiment shown, the number of second components 2 is multiple, and the second components 2 are adapted to be installed along the length direction of the first component 1, and the installation position and number of the second components 2 can be selected according to the actual situation on site, so that the fixed object 3 and the first component 1 can be stably connected.

[0048] In some embodiments, the hardness of the second component 2 is less than the hardness of the upper surface of the fixed object 3, which can reduce the scratching and wear of the upper surface of the fixed object 3 during installation and in the fixed state, and plays a certain protective role for the fixed object 3.

[0049] Further, the hardness of at least the second end 22 of the second component 2 needs to be set to be less than the hardness of the upper surface of the fixed object 3, so as to reduce the scratching and wear of the second component 2 and the fixed object 3 at the direct contact position.

[0050] As Figure 1 and 3In the shown embodiment, the first part 1 is provided with a first engaging portion 14, and the first end 21 is provided with a second engaging portion 23, when the first engaging portion 14 and the second engaging portion 23 are engaged, the second end 22 is adapted to be in contact with the upper surface of the fixed object 3, and the first engaging portion 14 and the second engaging portion 23 are limited from moving away from each other, so that the installation operation is more simple, convenient and fast, and the connection and fixation can be completed by directly buckling the first part 1 to the second part 2.

[0051] As shown in the embodiment, Figure 3 In the shown embodiment, the second part 2 is roughly U-shaped, the angle between the engagement direction of the first engaging portion 14 and the second engaging portion 23 and the plane adapted to the fixed object 3 is an acute angle, specifically, the first engaging portion 14 and the second engaging portion 23 are inclined relative to the upper surface of the fixed object 3, as the second end 22 of the second part 2 approaches the fixed object 3, the first end 21 of the second part 2 can also approach the first part 1, so that the first engaging portion 14 and the second engaging portion 23 are combined, the horizontal movement of the first end 21 is associated with the longitudinal movement of the second end 22, under the mutual limitation of the first engaging portion 14 and the second engaging portion 23 and the limitation of the upper surface of the fixed object 3, the second end 22 is difficult to move in the engagement direction of the first engaging portion 14 and the second engaging portion 23, and further difficult to move away from the upper surface of the fixed object 3.

[0052] As shown in the embodiment, Figure 1 and 3 In the shown embodiment, the first engaging portion 14 and the second engaging portion 23 are provided with a rack structure, the slope direction of the rack structure is the same as the engagement direction of the first engaging portion 14 and the second engaging portion 23, so that the first engaging portion 14 and the second engaging portion 23 can be engaged with each other, but difficult to move in the opposite direction of the mutual engagement direction.

[0053] As shown in the embodiment, Figures 7 to 10 In the shown embodiment, the first part 1 is provided with a slot 15, the first end 21 is adapted to be inserted into the slot 15, the insertion direction of the first end 21 and the slot 15 is perpendicular to the upper surface of the fixed object 3, and the first part 1 is arranged on the second part 2 by insertion, so that the installation and disassembly difficulty of the first part 1 and the second part 2 can be reduced, and the repeated installation of the parts is more convenient.

[0054] In some embodiments, the opening of the slot 15 is arranged upward, so that when the first end 21 is inserted into the slot 15, the second end 22 can approach the upper surface of the fixed object 3 synchronously.

[0055] As shown in the embodiment, Figure 7In the shown embodiment, the slot 15 is arranged in an embedded form on the first component 1 close to the second component 2, the first end 21 is bent in the direction of the second end 22 to form a plug structure 222, the plug structure 222 is adapted to be inserted into the slot 15, and the purpose of the embedded slot 15 is that the protection part 11 is located above the slot 15, which can to some extent block the first end 21 from being separated from the slot 15, thereby improving the stability of the combination of the first component 1 and the second component 2.

[0056] As shown in the embodiment, Figures 8 to 10 In the shown embodiment, the width of the slot 15 close to the fixed object 3 is greater than the width of the slot 15 away from the fixed object 3, forming a slot 15 cross section with a wide inside and a narrow outside, and part or all of the first end 21 is adapted to form a slot structure 223, which is adapted to be inserted into the slot 15, which can effectively fix the second component 2 and make the second end 22 of the second component 2 adapt to the upper surface of the fixed object 3.

[0057] As shown in the embodiment, Figure 8 In the shown embodiment, the side of the slot 15 away from the fixed object 3 is an open structure, at least part of the first end 21 is adapted to be located in the slot 15, and at least part of the first end 21 is adapted to be located outside the slot 15, so that the first end 21 and the slot 15 are locked and connected, and it can be understood that the part of the first end 21 located outside the slot 15 can be taken and operated, so that the cooperation or separation of the first end 21 and the slot 15 can be more easily controlled, effectively reducing the disassembly difficulty.

[0058] It can be understood that the shape and width design of the slot 15 and the open structure design can be used alone or in combination, and when used in combination, both the stable plug-in locking between the slot 15 and the first end 21 and the effective reduction of the disassembly difficulty between the slot 15 and the first end 21 can be achieved.

[0059] As shown in the embodiment, Figure 9 In the shown embodiment, the cross-sectional shape of the slot 15 is trapezoidal, and the longer side of the trapezoid is close to the fixed object 3, and it can be understood that the cross-sectional shape of the slot 15 is changed to a conventional geometric shape such as a fan shape, which is large at the top and small at the bottom, and the same effect can be achieved.

[0060] As shown in the embodiment, Figures 8 to 9 In the shown embodiment, the slot 15 is opened on the protection part 11, and since the protection part 11 is an external structure of the first component 1, the slot 15 opened on the protection part 11 can facilitate slotting processing and reduce processing difficulty.

[0061] One or more embodiments of the present application also provide a photovoltaic module comprising the above-described any embodiment of the dust accumulation prevention mounting structure.

[0062] As shown in the embodiment, Figure 6In the shown embodiment, at least one side of the photovoltaic module 31 uses the anti-dust installation structure of any of the above embodiments, and the remaining sides of the photovoltaic module 31 can use a common frame, wherein when the photovoltaic module 31 is installed in an inclined manner, at least the lowest side of the photovoltaic module 31 is fixed using the anti-dust installation structure of any of the above embodiments, so as to realize the water accumulation on the lowest side of the photovoltaic module 31.

[0063] The above describes the basic principles, main features and advantages of the present application, and those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dust accumulation preventing mounting structure characterized by comprising: The application relates to a fixing device for fixing an object, which comprises a first part and a second part, the first part is adapted to support the object, the second part comprises a first end and a second end, the first end is adapted to be connected with the first part, and the second end is adapted to be matched with the upper surface of the object, a drainage surface is arranged on the second end, one end of the drainage surface is adapted to be matched with the upper surface of the object, and the other end of the drainage surface is adapted to extend beyond the edge of the object and extend towards the first end.

2. A dirt buildup preventing mounting structure according to claim 1, characterized by: A protection part is arranged on the first part, the inner side of the protection part is adapted to be matched with the side of the object, the second part is located on the outer side of the protection part, and the end of the drainage surface extending towards the first end is adapted to extend along the outer side of the protection part and form a drainage channel together with the protection part.

3. A dirt buildup resistant mounting structure as claimed in claim 2, characterized by: The top end of the protection part is matched with the side of the object and is lower than the upper surface of the object, the inner side of the protection part is recessed to form a filling cavity, a first plane is arranged above the filling cavity, the first plane is adapted to be matched with the side of the object, the distance between the upper end point of the filling cavity and the side of the object is smaller than the distance between the lower end point of the filling cavity and the side of the object, a base is arranged on the first part, a second plane is arranged on the outer side of the protection part, and the side of the base close to the protection part is located in the same plane as the second plane.

4. The anti-dust accumulation mounting structure according to claim 1, characterized by: The first part is provided with a first combining part, the first end is provided with a second combining part, when the first combining part is combined with the second combining part, the second end is adapted to be matched with the upper surface of the object and limit the first combining part and the second combining part from moving away from each other, the second part is in a U shape, the angle between the combining direction of the first combining part and the second combining part and the plane where the drainage surface is adapted to the object is an acute angle, and the first combining part and the second combining part are provided with a rack structure.

5. The anti-dust accumulation mounting structure according to claim 1, characterized by: The first part is provided with a slot, and the first end is adapted to be inserted into the slot so that the second end at least partially covers the object.

6. A dirt buildup resistant mounting structure as claimed in claim 5, characterized by: The slot is arranged on the side of the first part close to the second part in an embedded manner, the first end is bent to form a bolt structure towards the second end, and the bolt structure is adapted to be inserted into the slot.

7. A dirt buildup resistant mounting structure as claimed in claim 5, characterized by: The width of the side of the slot close to the object is greater than the width of the side of the slot away from the object, part or all of the first end is adapted to form a notch structure, the notch structure is adapted to be inserted into the slot, the side of the slot away from the object is an open structure, at least part of the first end is adapted to be located in the slot, at least part of the first end is adapted to be located outside the slot so that the first end and the slot are locked, and the slot is arranged on the protection part.

8. The anti-dust accumulation mounting structure according to claim 1, characterized by: The first component is provided with a support part adapted to support the lower surface of the fixed object, and / or the support part is provided with a plurality of spaced-apart accommodating grooves; the support part is formed with a support body between two adjacent accommodating grooves; and / or the top of the support body is in a circular arc shape.

9. The anti-dust accumulation mounting structure according to claim 1, characterized by: The number of the second components is multiple, and the second components are adapted to be installed along the length direction of the first component; the hardness of the second components is less than the hardness of the upper surface of the fixed object.

10. A photovoltaic module, characterized by: The dust accumulation prevention installation structure comprises the first component and the second component.

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