WIPER BLADE DEVICE

Abstract

A wiper blade device is provided, comprising a carrier element, a spoiler element having a carrier element receiving area, a blade holding area, and a spoiler area, a wiper blade coupled to the blade holding area, and an arm connector. The spoiler element has a cleaning fluid passage, and the cleaning fluid passage has a nozzle installation area with an open structure in which the cleaning fluid passage is cut at several points spaced apart along the longitudinal direction of the spoiler element. The wiper blade device further comprises a pair of protruding coupling areas arranged in the nozzle installation area, coupled in a form in which they are inserted into the cleaning fluid passage and protrude in opposite directions on the same line, and several spray modules designed to spray the cleaning fluid outwards.The spray module is detachably coupled to the spoiler element.

Description

[0001] This application is based on and claims priority under 35 USC §119 of Korean patent application No. 10-2024-0168906, which was filed with the Korean Patent Office on November 22, 2024. The disclosure of that application is incorporated in its entirety into the present application by reference. BACKGROUND 1. Area

[0002] The disclosure relates to a wiper blade device for removing foreign objects from a vehicle windshield, and more specifically to a structure in which a cleaning fluid spray module is provided on a spoiler element. 2. Description of the state of the art

[0003] Generally, vehicles are equipped with wiper systems to remove foreign objects from the surface of the windshield and rear window. Wiper systems function to ensure the driver's field of vision by causing a motor to move wiper blades, thus wiping the surface of the windshield.

[0004] In a conventional wiper mechanism, a rotary motion from a wiper motor is transmitted to a wiper arm via a linkage and a pivot point. The wiper arm then rotates back and forth through a set angle. Accordingly, the wiper blade assembly, installed at the front end of the wiper arm, wipes the surface of the windshield as it moves with the arm.

[0005] Newer wiper blade assemblies tend to incorporate spoiler elements to ensure smooth operation at high speeds. Specifically, low-profile wiper blade assemblies feature a metal support element (vortex), which reduces the size of the wiper blade assembly and eliminates a structure that could impede airflow between the windshield and the wiper blade assembly. Consequently, low-profile wiper blade assemblies are widely used.

[0006] A spray nozzle is designed to spray cleaning fluid to reduce friction between the windshield and the wiper blade assembly when the wiper blade assembly is in operation, and to more effectively remove foreign matter. A conventional cleaning fluid spray nozzle is installed in a vehicle's hood or engine compartment cover. More recently, a cleaning fluid spray nozzle may be installed in an arm connector, which is a device for connecting a wiper blade assembly to a wiper arm. Furthermore, a cleaning fluid spray nozzle may be integrally integrated with a spoiler element, forming a wiper blade assembly. When the cleaning fluid spray nozzle is integrated into the spoiler element, it is more effective at removing foreign matter from the windshield surface.However, if the cleaning fluid spray nozzle is integrally formed with the spoiler element, the entire wiper blade must be replaced if the nozzle becomes clogged or stops working, increasing maintenance and replacement costs. SUMMARY

[0007] A wiper blade device is provided which exhibits excellent spray efficiency and is associated with reduced maintenance and replacement costs by improving an arrangement structure of a cleaning fluid spray module provided in the wiper blade device.

[0008] Additional aspects are partly set out in the following description and partly arise from the description or can be understood by practicing the presented examples of the disclosure.

[0009] According to one aspect of the disclosure, a wiper blade device comprises a support element formed from a metal plate having an elongated rod shape, a spoiler element having a support element receiving area with which the support element is coupled, a blade holding area arranged at a lower area thereof and with which a wiper blade is slidably coupled, and a spoiler area arranged at an upper area thereof and designed to generate a downward pressure force caused by airflow, wherein the wiper blade is coupled to the blade holding area and is designed to come into contact with a vehicle windshield and remove foreign matter from the windshield, and an arm connector arranged in a central area of ​​the support element and attached to the spoiler element, with which a wiper arm is coupled.wherein the spoiler element has a cleaning fluid passage through which cleaning fluid is transferred along a longitudinal direction, and wherein the cleaning fluid passage comprises a nozzle installation area with an open structure in which the cleaning fluid passage is cut at several points spaced apart along the longitudinal direction of the spoiler element, wherein the wiper blade device further comprises several spray modules designed to spray the cleaning fluid outwards in a jet form, wherein the several spray modules have a pair of protruding coupling areas arranged in the nozzle installation area, coupled in a form in which they are inserted into the cleaning fluid passage, and which protrude on the same line in opposite directions, and the spray module is detachably coupled to the spoiler element.

[0010] One of the several spray modules is a combined cleaning fluid supply module with a cleaning fluid injection area that is coupled to a hose and into which cleaning fluid supplied from a cleaning fluid tank is introduced.

[0011] The combined cleaning fluid supply module may have a memory that can temporarily store the cleaning fluid.

[0012] The combined cleaning fluid supply module can be located at a point that is longitudinally spaced from the arm connector towards a rear end of the wiper arm.

[0013] The combined cleaning fluid supply module can be arranged such that an upper area of ​​it is covered by the wiper arm.

[0014] The spray module can have a hook structure, coupled in a shape in which it surrounds edges of the spoiler element.

[0015] The spray module can have at least one spray structure, and spray holes can be designed to spray the cleaning fluid in different directions.

[0016] The wiper blade device can further include a quick coupler with a passage, in which one end area communicates with the hose and another end area communicates with the cleaning fluid injection port, wherein the quick coupler is detachably coupled to the cleaning fluid injection area.

[0017] The quick coupler can have a pair of elastic hooks that protrude towards the cleaning fluid injection area, and a stop that protrudes in a cantilever shape can be arranged on an outer circumferential surface of the cleaning fluid injection area so that it can be coupled to the pair of elastic hooks.

[0018] The wiper blade device may further have a positioning projection arranged on the quick coupler and projecting towards an upper surface of the cleaning fluid injection area, and a positioning groove arranged in the upper surface of the cleaning fluid injection area and accommodating the positioning projection.

[0019] The positioning groove can be shaped in such a way that it widens upwards in one direction, so that the positioning projection received in the positioning groove is pushed upwards when the quick coupler is rotated in a circumferential direction of the cleaning fluid injection area.

[0020] A coupling area of ​​the pair of protruding coupling areas arranged on a spray module which, among the multiple spray modules, is closest to the opposite end areas of the spoiler element in the longitudinal direction, may have a closed structure.

[0021] The stop can have an inclined surface which causes the distance between the front ends of the pair of elastic hooks to increase during a process in which the elastic hooks are coupled. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other aspects, features, and advantages of certain embodiments of the disclosure are more readily apparent from the present description in conjunction with the accompanying drawings. These show: Fig. 1 a drawing illustrating a state in which a wiper blade device according to an embodiment is coupled to a wiper arm; Fig. 2 a perspective exploded view of main components, which are in Fig. 1 are illustrated; Fig. 3 a sectional view along line III-III of the Fig. 1; Fig. 4 a sectional view along line IV-IV of the Fig. 1; Fig. 5 a sectional view along line VV of the Fig. 1; Fig. 6. A drawing that depicts a three-dimensional structure of a [thing] Fig. 3 illustrated spray modules; Fig. 7 a drawing that depicts a three-dimensional structure of a Fig. 4 illustrated, combined cleaning fluid supply module illustrated; Fig. 8 a drawing that depicts a three-dimensional structure of a Fig. 4 illustrated quick couplers; and Fig. 9 a drawing illustrating a state in which a combined cleaning fluid supply module and a quick coupler are coupled together. DETAILED DESCRIPTION

[0023] Reference is now made in detail to embodiments, examples of which are illustrated in the accompanying drawings, whereby identical reference numerals consistently refer to the same elements. In this context, the present embodiments may take various forms and should not be interpreted as being limited to the descriptions presented here. Accordingly, the embodiments are subsequently described only by reference to the figures in order to clarify aspects of the present description. Here, the term "and / or" is used to encompass any and all combinations of one or more of the associated, listed items. When expressions such as "at least one of" precede a list of elements, they modify the entire list of elements and do not modify the individual elements of the list.

[0024] The following are detailed descriptions of embodiments with reference to the accompanying drawings, enabling those skilled in the art to easily implement the disclosure. However, the disclosure can be implemented in various different forms and is not limited to the embodiments described herein. Therefore, when describing the embodiments in detail, if a detailed description of relevant, known functions or configurations would unnecessarily obscure the core of the disclosure, the detailed description of such functions or configurations will be omitted. Additionally, parts with similar functions and operating principles are consistently identified in the drawings by the same reference numerals and / or symbols.

[0025] It should be noted that the terms "include" or "exhibit" used herein specify the presence of the elements mentioned, but do not exclude the presence or addition of one or more other elements. More precisely, the terms "include," "exhibit," or "have" used herein are inclusive and therefore specify the presence of one or more of the mentioned features, integers, steps, operations, elements, components, or any combination thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or any combination thereof.

[0026] The singular forms used herein are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the shapes and sizes of the elements in the drawings may be exaggerated for clarity.

[0027] Fig. Figure 1 is a drawing illustrating a state in which a wiper blade device according to an embodiment is coupled to a wiper arm. Fig. 2 is a perspective exploded view of the in Fig. 1 illustrated main components. Fig. 3 is a sectional view along line III-III of the Fig. 1. Fig. 4 is a sectional view along line IV-IV of the Fig. 1. Fig. 5 is a sectional view along line VV of the Fig. 1. Fig. 6 is a drawing that depicts a three-dimensional structure of a Fig. 3 illustrated spray modules. Fig. 7 is a drawing that depicts a three-dimensional structure of a Fig. 4 illustrated, combined cleaning fluid supply module. Fig. 8 is a drawing that depicts a three-dimensional structure of a Fig. 4 illustrated quick couplers. Fig. Figure 9 is a drawing illustrating a state in which the combined cleaning fluid supply module and the quick coupler are coupled together.

[0028] With reference to Fig. 1-9 a wiper blade device according to the disclosure can comprise a support element (vortex) 20, a spoiler element 30, a wiper blade 40, an arm connector 50, end caps 60 and a spray module 70.

[0029] The support element 20 can contain metal. For example, the support element 20 can contain stainless steel or carbon steel. The support element 20 can be formed by processing a sheet-like metal into an elongated bar shape. The support element 20 can be used to exert an elastic restoring force on the wiper blade 40, as described below.

[0030] The spoiler element 30 can be molded from a synthetic resin. The spoiler element 30 can perform one or more functions. The spoiler element 30 can accommodate the support element 20. The spoiler element 30 can have a tunnel-shaped support element receiving area 32 to which the support element 20 is coupled. The support element receiving area 32 can be a hole that passes through the spoiler element 30 in a longitudinal direction.

[0031] The spoiler element 30 can have a blade retention area 34. The blade retention area 34 can be located on a lower area of ​​the spoiler element 30. The blade retention area 34 can be designed in the form of a groove with an open bottom. The wiper blade 40 can be slidably coupled to the blade retention area 34.

[0032] The spoiler element 30 can have a spoiler area. The spoiler area can be formed at the upper end of the spoiler element 30. The spoiler area can have a shape to generate a downward pressure force relative to the spoiler element 30 due to airflow.

[0033] The spoiler element 30 can be provided as a pair. In this case, the spoiler elements can each be arranged on opposite sides with respect to the center of the arm connector 50 described below.

[0034] The spoiler element 30 can have a cleaning fluid passage 36 for spraying cleaning fluid. The cleaning fluid passage 36 is a passage formed along the longitudinal direction of the spoiler element 30. The cleaning fluid passage 36 can be integral with the spoiler element 30. The cleaning fluid can be transferred through the cleaning fluid passage 36.

[0035] The spoiler element 30 can have multiple nozzle installation areas 38.

[0036] The multiple nozzle installation areas 38 can be formed by cutting through a section of the cleaning fluid passage 36. The multiple nozzle installation areas 38 can be arranged at positions spaced apart along the longitudinal direction of the spoiler element 30. In one embodiment, the nozzle installation areas 38 are provided at four locations. The nozzle installation areas 38 can form an open structure in which the cleaning fluid passage 36 is cut out.

[0037] The spray module 70 can be installed in any of the nozzle installation areas 38. This means that multiple spray modules 70 can be provided. The spray module 70 is described below.

[0038] The wiper blade 40 can be made of a material such as rubber. The wiper blade 40 can be coupled to the blade holder 34. The wiper blade 40 can be coupled to the blade holder 34 in a sliding structure. The wiper blade 40 can come into contact with the vehicle's windshield and remove foreign objects from the windshield. The upper part of the wiper blade 40 can be coupled to the blade holder 34, and the lower part of the wiper blade 40 can protrude towards the lower end of the spoiler element 30.

[0039] The arm connector 50 can be arranged in the central area of ​​the support element 20. The arm connector 50 can be arranged in the same way as it is attached to the spoiler element 30. The arm connector 50 can have a passage that communicates with the cleaning fluid passage 36 formed in the spoiler element 30. A wiper arm 800 can be coupled to the arm connector 50. Furthermore, an end region of the wiper arm 800 that is coupled to the arm connector 50 in the longitudinal direction is defined as the front end. An end region that is opposite the end region of the wiper arm 800 that is coupled to the arm connector 50 in the longitudinal direction is defined as the rear end.

[0040] The arm connector 50 allows the spoiler element 30 to be coupled. The arm connector 50 can have several elements that are coupled together. The wiper arm 800 can be detachably coupled to the arm connector 50.

[0041] The end caps 60 can each be coupled to opposite end regions of the spoiler element 30. The end cap 60 can be manufactured by injection molding of synthetic resin.

[0042] The spray module 70 can have a pair of protruding coupling areas 73 and a nozzle 74.

[0043] The pair of protruding coupling areas 73 can be arranged on the same line in the longitudinal direction of the cleaning fluid passage 36. The pair of protruding coupling areas 73 can be configured to protrude in opposite directions. The protruding coupling areas 73 can be coupled in such a way that they are inserted into the cleaning fluid passage 36. The pair of protruding coupling areas 73 can communicate with each other in such a way that the cleaning fluid can be introduced and dispensed. The spray module 70 can have the nozzle 74, which sprays the cleaning fluid outwards in a jet.

[0044] The spray module 70 can be detachably coupled to the spoiler element 30.

[0045] For example, the spray module 70 can have at least one spray structure, and spray holes can be designed to spray the cleaning fluid in different directions.

[0046] One of the spray modules 70 can be a combined cleaning fluid supply module 72, which has a cleaning fluid injection area 76 coupled to a hose 900 and into which cleaning fluid is introduced, supplied from a cleaning fluid tank (not shown). The cleaning fluid injection area 76 can be a chimney-shaped structure projecting upwards from the combined cleaning fluid supply module 72.

[0047] In one embodiment, a storage chamber 78, which can temporarily store the cleaning fluid, can be provided within the combined cleaning fluid supply module 72. The storage chamber 78 can temporarily store the cleaning fluid injected through the hose 900. Due to the storage chamber 78, the cleaning fluid can be immediately transferred to the cleaning fluid passage 36. The storage chamber 78 can communicate with the cleaning fluid injection area 76. Additionally, the storage chamber 78 can be configured to communicate with the protruding coupling area 73.

[0048] The combined cleaning fluid supply module 72 can be positioned at a location longitudinally spaced from the arm connector 50 towards the rear end region of the wiper arm 800. Additionally, the combined cleaning fluid supply module 72 can be positioned such that its upper region is covered by the wiper arm 800. Since the hose 900 is coupled to the combined cleaning fluid supply module 72, this prevents the hose 900, or a quick coupler 80 (described below), from detaching from the combined cleaning fluid supply module 72 when subjected to an unexpected external force. Furthermore, since the quick coupler 80 is not visible from the outside, an aesthetically pleasing result can be achieved.

[0049] The spray module 70 can have a hook structure 75 that is coupled in such a way that it surrounds edges of the spoiler element 30. The hook structure 75 can hold the spray module 70 in a state in which it is stably coupled to the spoiler element 30 in conjunction with the protruding coupling areas 73 provided on the spray module 70.

[0050] The combined cleaning fluid supply module 72 can feature the quick coupler 80.

[0051] The quick coupler 80 can have a through-hole, with one end communicating with the hose 900 and another end communicating with the cleaning fluid injection area 76. The quick coupler 80 can be detachably coupled to the cleaning fluid injection area 76. The quick coupler 80 can have an injection tube area 81 that protrudes to allow insertion along an inner circumferential surface of the cleaning fluid injection area 76. An O-ring can be installed on an outer circumferential surface of the injection tube area 81.

[0052] The quick coupler 80 can have a pair of elastic hooks 82 projecting towards the cleaning fluid injection area 76. A cantilevered stop 723 can be provided on an outer circumferential surface of the cleaning fluid injection area 76 so that it can be coupled to each of the elastic hooks 82. Since the elastic hook 82 is captured by the stop 723, the quick coupler 80 can maintain a state in which it is coupled to a body of the combined cleaning fluid supply module 72. The elastic hooks 82 can be provided as a pair, and the pair of elastic hooks 82 can be spaced 180° apart along the circumference of the cleaning fluid injection area 76.

[0053] The stop 723 can have an inclined surface 724 which creates a distance between the front ends of the elastic hooks 82 in order to widen during a process according to which the elastic hooks 82 are coupled.

[0054] The quick coupler 80 can have a positioning projection 84.

[0055] The positioning projection 84 can be located at a position spaced apart from the location of the elastic hook 82. For example, the positioning projection 84 can be located at a position spaced 90° away from the elastic hook 82. The positioning projection 84 can be a protruding structure extending towards the upper surface of the cleaning fluid injection area 76.

[0056] The cleaning fluid injection area 76 can have a positioning groove 725.

[0057] The positioning groove 725 can be a structure that corresponds to the positioning projection 84. The positioning groove 725 can be provided on the upper surface of the cleaning fluid injection area 76. The positioning groove 725 can accommodate the positioning projection 84. The positioning projection 84 and the positioning groove 725 can each be provided as a pair.

[0058] The positioning groove 725 can be designed to widen in an upward direction, so that the positioning projection 84 received in the positioning groove 725 is pushed upwards when the quick coupler 80 is rotated in the circumferential direction of the cleaning fluid injection area 76.

[0059] A coupling area of ​​the pair of protruding coupling areas 73 provided in the multiple spray modules 70 can have a closed structure. For example, a coupling area of ​​the pair of protruding coupling areas 73 provided on the spray module 70 that is longitudinally closest to opposite end regions of the spoiler element 30 can have a closed structure. Since the spray modules 70 arranged at opposite end regions no longer need to transfer the cleaning fluid, it is desirable for the protruding coupling area 73 near the end region to have a closed structure.

[0060] The operational effect of the wiper blade device 10, exhibiting the components described above, is described in detail below, using the process of assembling and installing the wiper blade device 10 as an example.

[0061] First, the assembly process of the wiper blade assembly 10 is described. The multiple spray modules 70 can be coupled to the spoiler element 30. During this process, the protruding coupling area 73 can be installed in the form in which it is inserted into the cleaning fluid passage 36 formed in the spoiler element 30. Additionally, the hook structure 75 can be attached in the form in which it surrounds the edges of the spoiler element 30. Next, the support element 20 can be coupled to the spoiler element 30. The arm connector 50 can be installed in the central area of ​​the support element 20. In this state, the wiper blade 40 can be slidably coupled to the spoiler element 30. Afterward, the end caps 60 can be coupled to the spoiler element 30. With these steps, the assembly of the wiper blade assembly 10 is complete. The wiper blade assembly 10 can then be installed on a vehicle.It is assumed that the wiper arm 800 is pre-installed on the vehicle. The front end of the wiper arm 800 can be connected to the arm connector 50. The quick coupler 80, to which the hose 900 is connected, can be connected to the cleaning fluid injection area 76 of the combined cleaning fluid supply module 72. More precisely, the quick coupler 80 can be pressed into a state in which the elastic hooks 82 of the quick coupler 80 are brought close to the stop 723. A gap between the elastic hooks 82 can be widened as the elastic hooks 82 move downwards along the inclined surface 724 of the stop 723, and the elastic hooks 82 can be connected to the stop 723. During this process, the positioning projection 84 can be inserted into the positioning groove 725 and thus installed in the correct position.To detach the hose 900 from the combined cleaning fluid supply module 72 for maintenance or repair, the quick coupler 80 can be held and rotated circumferentially around the cleaning fluid injection area 76. While the elastic hooks 82 are released from the stop 723, the positioning projection 84 can be rotated upwards along the side wall of the positioning groove 725. As a result, the quick coupler 80 can be easily detached from the cleaning fluid injection area 76.

[0062] Additionally, if a malfunction occurs in the spray module 70, the spray module 70 can be easily detached from the spoiler element 30 by utilizing the elastic deformation of the spoiler element 30, and then repaired or replaced.

[0063] Furthermore, since the quick coupler 80 is used, the height of the quick coupler 80 can be minimized, and thus the quick coupler 80 can be used even in a confined space.

[0064] As described above, in the wiper blade assembly according to the disclosure, the spray module, which sprays the cleaning fluid, can be detachably installed on the spoiler element that carries the blade. Accordingly, if a malfunction occurs in the spray module, only the spray module needs to be replaced individually, and thus the wiper blade assembly can be efficient with regard to maintenance and replacement.

[0065] Since the combined cleaning fluid supply module can be easily attached to and detached from the hose using the quick coupler, the working time required for installation and disassembly can also be reduced.

[0066] Furthermore, the structure in which the upper area of ​​the combined cleaning fluid supply module is covered by the wiper arm can prevent the connection between the combined cleaning fluid supply module and the hose from being damaged by an unexpected external force.

[0067] It should be noted that the embodiments described herein should be understood in a descriptive sense only and not for the purposes of limitation. Descriptions of features or aspects within each embodiment should typically be understood as applicable to other similar features or aspects in other embodiments. While one or more embodiments have been described with reference to the figures, it is clear to those skilled in the art that various changes in form and detail can be implemented in the embodiments without departing from the spirit and scope of protection of the disclosure defined by the following claims.

[0068] A wiper blade device is provided, comprising a carrier element, a spoiler element having a carrier element receiving area, a blade holding area, and a spoiler area, a wiper blade coupled to the blade holding area, and an arm connector. The spoiler element has a cleaning fluid passage, and the cleaning fluid passage has a nozzle installation area with an open structure in which the cleaning fluid passage is cut at several points spaced apart along the longitudinal direction of the spoiler element. The wiper blade device further comprises a pair of protruding coupling areas arranged in the nozzle installation area, coupled in a form in which they are inserted into the cleaning fluid passage and protrude in opposite directions on the same line, and several spray modules designed to spray the cleaning fluid outwards.The spray module is detachably coupled to the spoiler element. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] KR 10-2024-0168906

[0001]

Claims

Wiper blade device comprising: a carrier element formed from a metal plate having an elongated rod shape; a spoiler element comprising a carrier element receiving area to which the carrier element is coupled, a blade holding area arranged at a lower area thereof to which a wiper blade is slidably coupled, and a spoiler area arranged at an upper area thereof and designed to generate a downward pressure force caused by airflow; wherein the wiper blade is coupled to the blade holding area and designed to come into contact with a vehicle windshield and remove foreign matter from the windshield; and an arm connector arranged in a central area of ​​the carrier element and attached to the spoiler element, to which a wiper arm is coupled, wherein the spoiler element has a cleaning fluid passage.through which cleaning fluid is transferred along a longitudinal direction, and wherein the cleaning fluid passage comprises a nozzle installation area with an open structure in which the cleaning fluid passage is cut at several points spaced apart along the longitudinal direction of the spoiler element, wherein the wiper blade device further comprises several spray modules designed to spray the cleaning fluid outwards in a jet form, wherein the several spray modules have a pair of protruding coupling areas arranged in the nozzle installation area, coupled in a form in which they are inserted into the cleaning fluid passage, and which protrude on the same line in opposite directions, wherein the spray module is detachably coupled to the spoiler element, wherein one of the several spray modules is a combined cleaning fluid supply module with a cleaning fluid injection area.which is coupled to a hose and into which cleaning fluid supplied from a cleaning fluid tank is introduced, and wherein the combined cleaning fluid supply module includes a storage unit that can temporarily store the cleaning fluid. Wiper blade device according to claim 1, wherein the combined cleaning fluid supply module is arranged at a location which is spaced apart from the arm connector in the longitudinal direction towards a rear end of the wiper arm. Wiper blade device according to claim 1, wherein the combined cleaning fluid supply module is arranged such that an upper region thereof is covered by the wiper arm. Wiper blade device according to claim 1, wherein the spray module has a hook structure coupled in a form in which it surrounds edges of the spoiler element. Wiper blade device according to claim 1, wherein the spray module has at least one spray structure and spray holes are designed to spray the cleaning fluid in different directions. Wiper blade device according to claim 1, further comprising a quick coupler with a passage in which one end area of ​​the quick coupler communicates with the hose and another end area of ​​the quick coupler communicates with the cleaning fluid injection port, wherein the quick coupler is detachably coupled to the cleaning fluid injection area. Wiper blade device according to claim 6, wherein the quick coupler comprises a pair of elastic hooks projecting towards the cleaning fluid injection area, and a stop projecting in a cantilever shape is arranged on an outer circumferential surface of the cleaning fluid injection area so that it can be coupled to the pair of elastic hooks. Wiper blade device according to claim 6, further comprising: a positioning projection arranged on the quick coupler and projecting towards an upper surface of the cleaning fluid injection area; and a positioning groove arranged in the upper surface of the cleaning fluid injection area and receiving the positioning projection. Wiper blade device according to claim 8, wherein the positioning groove is shaped such that it widens upwards in one direction, so that the positioning projection received in the positioning groove is pushed upwards when the quick coupler is rotated in a circumferential direction of the cleaning fluid injection area. Wiper blade device according to claim 1, wherein a coupling area of ​​the pair of protruding coupling areas arranged on a spray module which, among the multiple spray modules, is closest to the opposite end areas of the spoiler element in the longitudinal direction, has a closed structure. Wiper blade device according to claim 7, wherein the stop has an inclined surface which causes a distance between the front ends of the pair of elastic hooks to increase during a process in which the elastic hooks are coupled.

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