Wiper blade device

Abstract

The present invention relates to a wiper blade device (12) with a spring rail (28), the spring rail having at least one first spring rail element (30), at least one second spring rail element (32), at least one bridge element group connecting the first spring rail element (30) and the second spring rail element (32) respectively, and at least one electrical heating element (34) for heating the first spring rail element (30), wherein the heating element (34) is at least partially arranged at at least one bridge element (26) of the bridge element group.

Description

Technical Field

[0001] The present invention relates to a wiper blade device (12) with a spring rail (28). Background Technology

[0002] A wiper blade device has been proposed, which includes at least one wiper blade adapter, at which at least one wiper arm adapter can be arranged for connecting the wiper blade to the wiper arm, wherein the wiper blade adapter has at least one base element that can be arranged at the wiper strip and / or at at least one spring rail of the wiper blade. Summary of the Invention

[0003] A wiper blade device with a spring rail is proposed, the spring rail having at least one first spring rail element, at least one second spring rail element, at least one bridge element group connecting the first spring rail element and the second spring rail element respectively, and at least one electrical heating element for heating the first spring rail element, wherein the heating element is at least partially arranged at at least one bridge element of the bridge element group.

[0004] In this context, "wiper blade assembly" should particularly refer to a wiper blade, especially a glass wiper blade, and advantageously at least one part, particularly an assembly, of a vehicle glass wiper blade. The wiper blade assembly may also include the entire wiper blade, particularly the entire glass wiper blade, and advantageously the entire vehicle glass wiper blade. It is conceivable that the wiper blade assembly is configured here as at least a part of a wiper blade in a beam configuration and / or at least a part of a beam wiper and / or a wiper blade in a beam configuration and / or a beam wiper. The wiper blade assembly is preferably provided for use on a vehicle. The wiper blade assembly is preferably provided for cleaning surfaces, particularly the glass of a vehicle. The wiper blade assembly is connected to the vehicle, particularly the vehicle's wiper arm, especially for cleaning vehicle glass. "Provided" should particularly refer to being specifically set, specifically designed, and / or specifically equipped. An object is set for a specific function, and in particular, it should refer to the object performing and / or implementing this specific function in at least one application state and / or operating state. In this context, “operating state” should specifically refer to a state in which the wiper blade assembly is ready to operate and / or in operation for the wiping process and / or wiping operation, in which the wiper blades of the wiper assembly are guided, in particular, on the vehicle glass and advantageously abut against it.

[0005] The term "wiper arm" should specifically refer to a unit of a windshield wiper, which is configured to move on the vehicle glass, particularly via a wiper arm adapter, a wiper blade assembly fixed to the wiper arm, and a wiper blade including the wiper blade assembly, for cleaning the vehicle glass. The wiper arm is preferably located at at least one drive shaft of the wiper drive of the vehicle's windshield wiper. The wiper arm is particularly capable of being driven by the wiper drive to move relative to the vehicle glass. The wiper arm preferably has at least one, particularly at least two, cleaning fluid supply lines that can be connected to the cleaning water nozzles of the wiper blades.

[0006] The wiper arm preferably includes at least one, and particularly at least two, electrical supply lines, such as cables connectable to the wiper blade assembly, and particularly to the supply unit of the wiper blade adapter. The electrical supply lines preferably extend at least along a large portion of the main extension length of the wiper arm from the end of the wiper arm that connects to the drive shaft of the vehicle's wiper drive to the end of the wiper arm that connects to the wiper arm adapter. The electrical supply lines are particularly configured to power at least one electrical component, particularly the heating element of the spring rail. The electrical supply lines are particularly configured to direct at least part of the current from a current generator, particularly a battery, a generator such as an alternator and / or a DC alternator, to / from the supply unit of the wiper blade adapter. At least one electrical supply line is preferably arranged at least substantially parallel to the wiper arm. At least two, and particularly exactly two, electrical supply lines are preferably arranged at the wiper arm.

[0007] "Wiper strip" should particularly refer to a unit made of at least one elastic material as a wiper body with a wiper lip, the wiper lip being configured to move in contact with the surface to be cleaned, particularly a glass surface, preferably a vehicle glass surface, for cleaning. The wiper strip is preferably made of a natural or artificial elastomer, particularly of plastic and / or rubber. It is conceivable that the wiper body and the wiper lip be constructed as a single unit. "Wiper lip" in this context should particularly refer to an elastic lip configured to sweep, wipe, and / or clean glass, particularly vehicle glass, with a wiping edge. "Single unit" should particularly refer to at least a material-fitting connection, for example by welding, bonding, sputtering, and / or other processes deemed reasonable by those skilled in the art, and / or advantageously integrally formed, such as by casting and / or by a single-component injection molding process or a multi-component injection molding process or an extrusion process, for example also in a co-extrusion process, and advantageously manufactured from a separate preform. In this regard, it is particularly preferred to refer to integral manufacturing, especially preferably in a prototyping process. The wiper blade's wiper body is preferably configured to accommodate a spring rail for stabilization. The wiper blade may, in particular, at least partially and preferably completely constitute at least one spring rail receiving portion. "Elasticity" in this context should especially refer to the ability of an object to repeatedly deform without mechanically damaging or destroying it, and the object automatically returning to its basic shape after deformation. To accommodate the spring rail, the wiper blade particularly at least partially and preferably completely constitutes a spring rail receiving portion. "Spring receiving portion" in this context should especially refer to a channel or groove configured to at least partially accommodate the spring rail. The spring rail receiving portion is preferably configured to primarily surround the spring rail, at least along the main portion of its main extension length. The wiper blade preferably constitutes two spring rail receiving portions configured as laterally oriented receiving grooves, the spring rail receiving portions being configured to partially accommodate at least one first spring rail element and / or a second spring rail element. Alternatively or additionally, the wiper blade may constitute at least one spring rail receiving portion configured as a spring rail channel, the spring rail receiving portion being configured to completely accommodate at least one spring rail. At least one wiper blade is configured to connect to at least one spring rail via at least one spring rail receiving portion. The dimensions of the at least one spring rail receiving portion are matched to the shape and size of the at least one spring rail. The wiper blade is advantageously connected to the spring rail in a form-fitting, and particularly force-fitting, manner.

[0008] "Spring rail" should in particular refer to a macroscopic structural unit having at least one extension length that can elastically deform by at least 10%, particularly at least 20%, preferably at least 40%, and especially advantageously at least 50% in normal operating and / or installed conditions, and in particular generates a reaction force associated with and preferably proportional to the change in the extension length, which counteracts the change.

[0009] The term "heating element" preferably refers to an element that converts input energy, particularly electrical energy, into heat and is configured to dissipate heat to its surrounding environment and / or surrounding and / or adjacent components. The heating element is preferably arranged at at least one first spring rail element, particularly at at least one second spring rail element, and / or at the wiper blade. The heating element is preferably configured for, particularly, temperature regulation of at least one first spring rail element and / or at least one second spring rail element and / or the wiper blade. At least one heating element preferably extends through a large portion, particularly the entire extension length, of the extension length of at least one wiper blade and / or spring rail. At least one heating element is preferably arranged on the side of the wiper blade adapter facing the wiper blade. At least one heating element is preferably arranged such that its main extension is at least substantially parallel to the main extension plane of at least one first spring rail element and / or at least one second spring rail element. The "main extension plane" of the object should particularly refer to a plane that is parallel to the largest outer surface of the smallest cuboid that just completely surrounds the object and preferably extends through the geometric center of gravity of the cuboid. At least one heating element preferably has at least one heating resistor. The at least one heating element has, for example, a heating conductor, which may have, for example, a heating wire and / or a heating film and / or, particularly, a conductive heating ceramic and / or, particularly, a conductive heating paste. It is conceivable that the wiper blade assembly has multiple heating elements, such as two, three, four, etc. The heating elements are advantageously configured to heat at least one wiper lip to a temperature at which the wiping process can be performed, and particularly at which the flexibility of the wiper lip rubber for the wiping process is ensured, and particularly optimized. This can accelerate and / or improve the cleaning of vehicle glass, especially when the external temperature is below 0°C and / or below the freezing point of water. The wiper blade assembly can achieve at least one advantageous heating function through the heating elements. Preferably, an electrical interface element is arranged at the wiper arm adapter for connection to an electrical supply line, particularly a plug-in connection. At least one spring element preferably electrically connects the electrical interface element at the wiper arm adapter to at least one heating element. The spring element is preferably at least partially made of a conductive metal. The spring element is preferably encapsulated by injection molding, particularly by spray casting, preferably by coating technology and / or injection molding technology and / or spray casting technology such as multi-component spray casting, at the electrical interface element for connection at the wiper arm adapter. The spring element is preferably arranged in the region of the wiper blade adapter, inside the outer wall of the adapter connecting element. The spring element preferably extends from the wiper blade adapter in the region surrounding the bearing element, along the direction of the heating element. An advantageous electrical connection can be achieved, allowing pivoting of the wiper blade adapter and / or pivoting of the wiper arm adapter relative to the wiper blade adapter.In particular, an advantageous connection for current supply can be achieved, especially a plug-in connection, configured to be independent of the pivoting position of the wiper adapter, especially the adapter connecting element, relative to the base element. It can be achieved that, in order to supply electrical power to the heating element, only a plug-in connection needs to be established between the wiper arm and the wiper arm adapter. The heating element is particularly configured as a film-like electrical heating device, particularly provided for heating the spring rail and / or wiper blade, and preferably at least bonded to the first spring rail element and / or at least bonded to the second spring rail element. In the installed state, the heating element is partially arranged at at least one bridge element of the bridge element group. The heating element can advantageously be integrally constructed and partially arranged at multiple bridge elements of the bridge element group. The heating element is particularly advantageously partially arranged at the bridge elements of the bridge element group and mostly arranged at at least one first spring rail element and / or at least one second spring rail element.

[0010] In this context, "installed state" should particularly refer to a state in which the wiper blade assembly is ready for operation in relation to the wiping process and / or wiping operation. The wiper blade assembly is arranged at and / or connected to the wiper arm, particularly in the installed state, wherein there is a mechanical, electrical, and / or fluidic connection between the wiper arm and the wiper blade assembly, particularly. At least one first spring rail element and / or at least one second spring rail element are preferably at least partially made of metal. Alternatively or additionally, it may be conceivable that the spring rail elements are at least partially made of plastic, composite materials, or other materials deemed reasonable by those skilled in the art. The spring rail elements are preferably at least partially made of spring steel. The spring rail preferably has at least substantially a bent bar shape in the unloaded state, and particularly advantageously a flattened bent bar shape. The spring rail can be integrally constructed or composed of multiple parts. Preferably, the curvature of the spring rail in the unloaded state is greater than the curvature of the surface of the vehicle glass, particularly the vehicle glass, which guides the spring rail on the surface of the vehicle glass in at least one operating state and / or installed state.

[0011] The term "bridge element group" should advantageously refer to a group of bridge elements, which may have, for example, one bridge element, particularly at least two bridge elements, and preferably at least three bridge elements. A "bridge element" should particularly refer to an element of the spring rail, configured to connect at least a first spring rail element to at least a second spring rail element. The bridge element particularly has an extension length along the longitudinal direction of the spring rail, which is particularly significantly less than the corresponding longitudinal extension of the spring rail. The longitudinal extension of the bridge element is particularly parallel to the longitudinal extension of the spring rail. The longitudinal extension of the bridge element, particularly the longitudinal extension of the spring rail, is, for example, at most 40%, advantageously at most 30%, particularly advantageously at most 20%, preferably at most 10%, and particularly preferably at most 5%. The bridge element can, for example, be formed of at least substantially the same material as the heating element. The bridge element can, for example, be configured as a film. The bridge element advantageously has at least one adhesive surface. The bridge element can alternatively or additionally be welded, particularly to the first spring rail element and / or the second spring rail element. The bridge element can be particularly advantageously constructed as an integral part of the first spring rail element and / or particularly with the second spring rail element.

[0012] The design of the wiper blade device according to the invention can achieve, in particular, improved heating characteristics. Advantageous heating of the wiper blade adapter can be achieved, particularly. Improved heating characteristics can be advantageously achieved, especially in the area of ​​the wiper blade adapter and / or the end cap. A wiper blade device with improved characteristics suitable for winter is particularly advantageously provided. This ensures, in particular, that cleaning water does not freeze and / or can thaw in the possible water-conducting parts.

[0013] Furthermore, it is suggested that the wiper blade assembly has a wiper blade adapter, at which at least one wiper arm adapter is arranged for connecting the wiper blade to the wiper arm. The wiper blade adapter has at least one base element that can be arranged at the wiper strip and / or at least the spring rail of the wiper blade. At least one bridge element of the bridge element group, more specifically, at least one bridge element of the bridge element group equipped with a heating element, is arranged in the area of ​​the wiper blade adapter. This design allows for cost-effective heating of the wiper blade adapter. In particular, it allows for cost-effective enhancement of the heating of the wiper blade adapter. In this context, "wiper blade adapter" should specifically refer to an adapter having a contact area with the wiper blade member and being connected to the wiper blade member without loss, and having a connection area formed on the surface to be cleaned, particularly the vehicle glass, for connection and / or contact with the member, particularly the wiper arm adapter. The wiper blade adapter and wiper arm adapter enable the wiper blade assembly to preferably connect to the vehicle, particularly the vehicle's wiper arm. In this context, "wiper arm adapter" should specifically refer to an adapter that can be connected to both the wiper arm component and the wiper blade adapter in a way that ensures connection without loss, and is configured to connect the wiper blade assembly, particularly the wiper blade adapter, to the wiper arm in a way that ensures connection without loss. The wiper arm adapter and wiper blade adapter enable the wiper blade assembly to be preferably connected to the vehicle, particularly the vehicle's wiper arm.

[0014] Furthermore, it is suggested that the wiper blade assembly has at least one end cap, wherein at least one bridge element of the bridge element group, more precisely, at least one bridge element of the bridge element group equipped with a heating element, is arranged in the region of the end cap. "End cap" should particularly refer to a covering member, which is particularly provided at least for covering one free end and particularly for covering the end region of the wiper blade. The end cap is provided, in particular, together with the wiper blade and / or spring rail, for plug-in installation. At least one end cap is arranged in the installed state at the end region of at least one wiper blade. The wiper blade assembly preferably has at least two end caps. At least two end caps are arranged, in particular, along the main extension direction, in the surrounding environment of opposite end regions of the wiper blade. At least one bridge element is preferably arranged at each of the opposite end caps. It is advantageous to achieve extension of the heating element or an expansion of the heating surface of the heating element. Advantageous heating of the end caps can be achieved particularly advantageously by this design.

[0015] The heating element can, for example, have a heating conductor with a straight shape and / or any other shape that is considered reasonable by those skilled in the art. When the heating element has at least one heating conductor with multiple corrugations, advantageous energy dissipation, particularly heat dissipation, can be achieved. "Heating conductor with multiple corrugations" should especially refer to a heating conductor configured, for example, as a heating wire with multiple adjacent coils. The corrugations can, for example, have a shape that is at least substantially rectangular. Alternatively, the corrugations can have a shape that is at least substantially angular and / or rounded. Viewed along the conduction direction of the heating conductor, the corrugations are advantageously arranged at least substantially in a plane. The heating conductor is particularly constructed of a homogeneous material.

[0016] Furthermore, it is suggested that, when viewed along the longitudinal extension of the spring rail, the corrugations are distributed at least substantially the same in the region of the bridge element of the bridge element group as in at least one region outside the bridge element of the bridge element group. It can thus be advantageously understood that, when viewed along the longitudinal extension of the spring rail, the multiple corrugations have at least substantially the same spacing between each other in the region of the bridge element of the bridge element group. This can, in particular, achieve uniform heat transfer in the region of the bridge element of the bridge element group. The “longitudinal extension” of the object here should especially refer to an extension parallel to the longest edge of the smallest imaginary cuboid that completely surrounds the object.

[0017] Furthermore, it is recommended that the corrugations be distributed substantially evenly along the entire longitudinal extension of the spring rail. In particular, this means that multiple corrugations, when viewed along the entire longitudinal extension of the spring rail, have at least substantially the same spacing from each other. This design can advantageously improve the heating of the wiper blades and / or wiper arm adapters and / or end caps.

[0018] Furthermore, it is suggested that, when viewed longitudinally along the spring rail, the corrugations include a longer heating conductor length in the region of the bridge element group than in at least one region outside the bridge element group. Advantageously, the corrugations in the region of the bridge element group include a longer heating conductor length extending laterally along the spring rail than in at least one region outside the bridge element group, while the length of the heating conductor extending longitudinally along the spring rail remains the same. This improves the heating power in the region of the bridge element. The "lateral extension" of the object here should specifically refer to an extension perpendicular to the longest edge of the smallest geometric cuboid that completely surrounds the object.

[0019] Furthermore, it is suggested that the spring rail has at least one electrically operated second heating element, which is configured to heat at least the second spring rail element. This simplifies the installation of the first spring rail element and / or the second spring rail element.

[0020] The second heating element can be constructed similarly to, for example, the first heating element. The heating conductor of the second heating element can alternatively or additionally be integrally constructed with the heating conductor of the first heating element. It is suggested that the second heating element has a second heating conductor with multiple second corrugations, which, when viewed along the longitudinal extension of the spring rail, are at least substantially uniformly distributed. This simplifies the installation of the wiper blade assembly.

[0021] Furthermore, it is suggested that the second corrugations, when viewed along the longitudinal extension of the spring rail, each comprise a heating conductor length of at least substantially the same size. Specifically, the second corrugations are all the same size. The lateral and / or longitudinal extensions of the corrugations along the spring rail advantageously comprise heating conductor lengths of equal length. This achieves uniform heating power. Cost-effective manufacturability of the second corrugations can be advantageously achieved through this design.

[0022] The bridge element assembly may, for example, consist only of heated bridge elements. However, the bridge element assembly advantageously has at least one unheated bridge element. This simplifies the installation of the wiper blade assembly and, in particular, reduces the manufacturing cost of the wiper blade assembly. The bridge element assembly advantageously has multiple unheated bridge elements. "Unheated bridge elements" specifically refers to the at least one unheated bridge element being arranged outside the heating area of ​​the first heating element and / or the second heating element.

[0023] A method for operating a wiper blade assembly with at least one spring rail having at least one first spring rail element, at least one second spring rail element, and at least one bridge element connecting the first and second spring rail elements, and the bridge element being heated. This can cost-effectively improve comfort, in particular.

[0024] The wiper blade device and method according to the present invention should not be limited to the applications and embodiments described above. The wiper blade device according to the present invention can, in particular, have a different number of elements, components, units, and method steps than those described herein, in order to perform the working methods described herein. Furthermore, values ​​within the limits specified in this disclosure should also be considered public and freely usable. Attached Figure Description

[0025] Further advantages are illustrated in the following figures, which depict embodiments of the invention. The figures, description, and claims contain numerous combinations of features. Those skilled in the art can also readily observe the stated features individually and generalize them into other reasonable combinations.

[0026] In the attached image:

[0027] Figure 1 This is a schematic diagram of a wiper blade with a wiper assembly installed on a vehicle.

[0028] Figure 2 A diagram of a wiper blade with a wiper adapter is shown in the top view;

[0029] Figure 3 A cross-sectional view of a wiper blade assembly with spring rails and bridge elements is shown in the top view.

[0030] Figure 4 The top view shows a partially sectional view of a wiper blade assembly with a first spring rail element and a second spring rail element; and

[0031] Figure 5 A flowchart is shown for a method of operating a wiper blade device. Detailed Implementation

[0032] exist Figure 1 The image shows a windshield wiper 10 as part of a motor vehicle 11. The motor vehicle 11 has glass 22, particularly a windshield, wherein the windshield wiper 10 is configured to clean the glass 22. However, it is also conceivable that the windshield wiper 10 is configured to clean other glass surfaces of the motor vehicle 11. The windshield wiper 10 includes a wiper blade assembly 12 with a wiper blade 14 and a wiper arm 18. The wiper blade has a wiper blade adapter 16, and the wiper arm has a wiper arm adapter 20. The wiper blade assembly 12 is rotatably supported at the outer edge of the glass 22, particularly by the wiper arm 18. The wiper arm 18 is arranged at the motor vehicle 11 without being lost. The wiper blade 14 has a contact area with the glass 22. The wiper blade 14 is preferably configured to connect to the wiper arm 18 and / or the wiper arm adapter 20 of the wiper arm 18. The wiper arm adapter 20 has a contact area with the wiper arm 18 and is connected to the wiper arm 18. The wiper arm adapter 20 is preferably configured to provide a connection area for the wiper arm 18 for connection and / or contact with the wiper blade adapter 16.

[0033] Wiper blade 14 has a wiper strip 24, which may include a channel element for guiding fluid. Figure 1 Not shown in the diagram. The wiper blade 14 has end caps 38 at both ends extending longitudinally 44 along the two ends (see also...). Figure 2 ).

[0034] The wiper blade assembly 12 has a wiper blade adapter 16 (see Figure 3 To connect the wiper blade 14 to the wiper arm 18, a wiper arm adapter 20 can be arranged at the wiper blade adapter 16 (see...). Figure 1 and3 The wiper blade assembly 12 has a spring rail 28. The wiper blade adapter 16 has a base element 36 that can be arranged at the wiper blade 24 and / or at least at the spring rail 28.

[0035] The spring rail 28 has a first spring rail element 30 and a second spring rail element 32. Both the first spring rail element 30 and the second spring rail element 32 are formed of spring steel. Furthermore, the spring rail 28 has a bridge element assembly. This bridge element assembly has some heated bridge elements 26 and / or some unheated bridge elements 52. Bridge elements 26 and 52 respectively connect the first spring rail element 30 and the second spring rail element 32. The bridge elements 26 of the bridge element assembly are arranged in the region of the wiper blade adapter 16. One bridge element 26 of each bridge element assembly is arranged in the region of the end cap 38.

[0036] Spring rail 28 has an electrical heating element 34. Heating element 34 is configured to heat the first spring rail element 30. Heating element 34 is partially arranged at the bridge element 26 of the bridge element group. Heating element 34 has a heating conductor 40 with multiple corrugations 42. The heating conductor is constructed as a heating wire, particularly a heating wire made of a copper-containing material.

[0037] The corrugations 42, when viewed along the longitudinal extension 44 of the spring rail 28, are distributed similarly within the area of ​​the bridge element 26 of the bridge element group and in at least one area outside the bridge element 26 of the bridge element group. The corrugations 42, when viewed along the longitudinal extension 44, have a constant spacing between each other within the area of ​​the bridge element 26 of the bridge element group and in the area outside the bridge element group.

[0038] In the example shown, the corrugations 42 are evenly distributed along the entire longitudinal extension 44 of the spring rail 28. That is to say, the corrugations 42 have a constant spacing between each other along the entire longitudinal extension 44.

[0039] When viewed along the longitudinal extension 44 of the spring rail 28, the corrugations 42 include a longer heating conductor length within the region of the bridge element 26 of the bridge element group than in the region outside the bridge element 26. In the illustrated example, the corrugations 42 have the same dimensions along the longitudinal extension 44 both within and outside the bridge element 26 of the bridge element group. In the illustrated example, the corrugations 42 have a longer heating conductor length, perpendicular to the longitudinal extension 44, within the region of the bridge element 26 of the bridge element group than in the region outside the bridge element 26.

[0040] The spring rail 28 has an electrically operated second heating element 46. The second heating element 46 is configured to heat the second spring rail element 32. The second heating element 46 has a second heating conductor 48. The second heating conductor 48 is constructed as a heating wire, particularly a heating wire made of a copper-containing material. The second heating conductor 48 can be constructed similarly to the heating conductor 40. The second heating conductor 48 has a plurality of second corrugations 50. The second corrugations 50 are substantially uniformly distributed when viewed along the longitudinal extension 44 of the spring rail 28. In the illustrated example, the second corrugations 50 each have substantially the same heating conductor length when viewed along the longitudinal extension 44 of the spring tube 28.

[0041] Furthermore, the bridge element group has two unheated bridge elements 52. The unheated bridge elements 52 are arranged longitudinally between the two bridge elements 26.

[0042] Figure 5 A method for operating a wiper blade assembly 12 is shown. The method includes at least one first method step 54 and another method step 56.

[0043] In the first method step 54, a wiper blade device 12 with at least one spring rail 28 is provided. This spring rail has at least one first spring rail element 30, at least one second spring rail element 32, and at least one bridge element 26 connecting the first spring rail element 30 and the second spring rail element 32. In the second method step 56, at least one bridge element 26 is heated. The heating element 36 is specifically supplied with electrical energy and operates electrically.

Claims

1. A wiper blade assembly (12) with a spring rail (28), the spring rail having at least one first spring rail element (30), at least one second spring rail element (32), at least one bridge-type element group connecting the first spring rail element (30) and the second spring rail element (32) respectively, and at least one electrical heating element (34) for heating the first spring rail element (30), wherein, The heating element (34) is at least partially arranged at at least one bridge element of the bridge element group. The wiper blade adapter (16) includes at least one wiper arm adapter (20) that can be arranged at the wiper blade adapter to connect the wiper blade (14) to the wiper arm (18). The wiper blade adapter (16) has at least one base element (36) that can be arranged at the wiper strip (24) and / or at least one spring rail (28) of the wiper blade (14). At least one bridge element of the bridge element assembly, equipped with a heating element, is arranged in the region of the wiper blade adapter (16), and / or... It has at least one end cap (38), wherein at least one bridge element of the bridge element group equipped with a heating element is arranged in the area of ​​the end cap (38).

2. The wiper blade device (12) according to claim 1, characterized in that, The heating element (34) has at least one heating conductor (40) with multiple corrugations (42).

3. The wiper blade device (12) according to claim 2, characterized in that, When viewed along the longitudinal extension (44) of the spring rail (28), the corrugations (42) are distributed at least substantially the same in the region of the bridge element of the bridge element group as in at least one region outside the bridge element of the bridge element group.

4. The wiper blade device (12) according to claim 3, characterized in that, The corrugations (42) are arranged at least substantially uniformly along the entire longitudinal extension (44) of the spring rail (28).

5. The wiper blade device (12) according to any one of claims 2 to 4, characterized in that, When viewed along the longitudinal extension (44) of the spring rail (28), the corrugations (42) in the bridge element group include a longer heating conductor length in each region of the bridge element group than in at least one region outside the bridge element group.

6. The wiper blade device (12) according to claim 1, characterized in that, The spring rail (28) has at least one electrical second heating element (46) for heating at least the second spring rail element (32).

7. The wiper blade device (12) according to claim 6, characterized in that, The second heating element (46) has at least one second heating conductor (48) with a plurality of second corrugations (50), which are at least substantially uniformly distributed when viewed along the longitudinal extension (44) of the spring rail (28).

8. The wiper blade device (12) according to claim 7, characterized in that, The second corrugation (50), when viewed along the longitudinal extension (44) of the spring rail (28), comprises at least substantially the same length of heating conductor.

9. The wiper blade device (12) according to claim 1, characterized in that, The bridge element group has at least one unheated bridge element.

10. Wiper blade (14), having at least one wiper blade device (12) according to any one of claims 1-9.

11. A method for operating a wiper blade device (12) according to any one of claims 1 to 9, the wiper blade device having at least one spring rail (28) having at least one first spring rail element (30), at least one second spring rail element (32) and at least one bridge element, the at least one bridge element connecting the first spring rail element (30) and the second spring rail element (32) and being heated.

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