CN115805900A - Supply device for a windscreen wiper and windscreen wiper comprising such a supply device - Google Patents

Abstract

The invention proceeds from a supply device for a heatable windshield wiper, having a wiping medium outlet, having at least one wiping medium supply unit which comprises at least one wiping medium channel for guiding a wiping medium to a wiper blade of the windshield wiper, having a heating unit which comprises at least one heating element for heating the wiping medium channel and at least one further heating element for heating the wiper blade, in particular a fluid channel of the wiper blade and/or a wiper strip, and having at least one power supply unit. It is proposed that the power supply unit comprises at least one electrically conductive element, which is provided for supplying power to the heating element and the further heating element.

Description

Supply device for a windscreen wiper and windscreen wiper comprising such a supply device

Technical Field

A supply device for a heatable windshield wiper has already been proposed, which has a wiping medium outlet, which has at least one wiping medium supply unit comprising at least one wiping medium channel for guiding a wiping medium to a wiper blade of the windshield wiper, which has a heating unit comprising at least one heating element for heating the wiping medium channel and at least one further heating element for heating the wiper blade, and which has at least one power supply unit.

Disclosure of Invention

The invention proceeds from a supply device for a heatable windshield wiper, having a wiping medium outlet, having at least one wiping medium supply unit which comprises at least one wiping medium channel for guiding a wiping medium to a wiper blade of the windshield wiper, having a heating unit which comprises at least one heating element for heating the wiping medium channel and at least one further heating element for heating the wiper blade, in particular a fluid channel of the wiper blade and/or a wiper strip, and having at least one power supply unit.

It is proposed that the power supply unit comprises at least one electrically conductive element, which is provided for supplying power to the heating element and the further heating element. Preferably, the electrically conductive element is provided for direct electrical connection with the heating element and/or the further heating element. In particular, the electrically conductive element is provided for being electrically connected directly to the heating element and the further heating element or electrically connected to the heating element and via the heating element to the further heating element. Preferably, the power supply unit comprises at least two, in particular exactly two, electrically conductive elements which each form an electrode for the electrical connection of the heating element and the further heating element. Preferably, the heating element and the further heating element are configured as part of a single electrical circuit. Preferably, the heating element, in particular the heating element and the further heating element, are each designed as an electrical conductor and are provided for heating the environment by means of an electrical current. For example, the heating element, in particular the heating element and the further heating element, are each designed as a wire, a film or the like. Preferably, the heating element, in particular the heating element and the further heating element, each consist at least partially of an electrically conductive material, preferably a metal. The electrically conductive element/elements are preferably provided for supplying an electrical current to the heating element, in particular to the heating element and the further heating element, and/or for applying a voltage to the heating element, in particular to the heating element and the further heating element.

One of the two heating elements, in particular the heating element, is preferably provided for being arranged in or on the at least one wiper medium channel. In a preferred embodiment, the wiping medium supply unit comprises at least two, in particular exactly two, wiping medium channels, wherein in particular the heating element extends at least largely, preferably at least substantially completely, along both wiping medium channels. Preferably, the heating element comprises at least two conductive paths, which are directly electrically connected to each other. In particular, one conduction path of the heating element is arranged in or on one of the two wiper medium channels and the other conduction path of the heating element is arranged in or on the other of the two wiper medium channels. Preferably, the two conduction paths of the heating element are directly electrically connected to one another in the end regions of the two wiper medium channels. The further heating element is preferably provided for heating at least one fluid channel and/or at least one wiper strip of the wiper blade. Preferably, the further heating element is arranged on the wiper blade, in particular on a spring rail of the wiper blade.

The supply device is preferably provided for the electrical and hydraulic supply of the windshield wiper, in particular of the wiper blade. The power supply unit is provided in particular for supplying power to the heating unit, in particular to the heating element. A "direct electrical connection" is to be understood to mean, in particular, a connection between two bodies, in particular a heating element and a further heating element and/or an electrically conductive element, wherein an electrical current and thus an electrical energy and an electrical signal can be transmitted between the two bodies, and the two bodies are arranged close to one another, wherein, in particular, an electrical transmission takes place via the contact points between the two bodies. In particular, the two bodies are conductively connected close to one another by a form-fitting arrangement. It is conceivable that the power supply unit is provided in addition to the supply of power to a further electrical component or unit of the windshield wiper, in particular to the power supply unit. Preferably, the wiping medium supply unit is provided for supplying the wiping medium for a wiping medium output of the windscreen wiper. In particular, the wiper medium supply unit is provided to guide the wiper medium from an external unit, in particular, for example, a wiper medium reservoir of a vehicle, to the wiper blade.

Preferably, the wiper medium channels are each formed by a tube or a hose. Preferably, the two wiping medium channels are fluidically separated from one another, in particular at least in the region of the wiping sheet side of the wiping medium channels. Preferably, a wiper medium channel/wiper medium channels extends from/along the end of the wiper arm up to the end of the wiper arm on the wiper blade side facing away from said end. Preferably, the wiper medium supply unit comprises at least one connecting element for connecting to an external unit, in particular a wiper medium reservoir, and at least one connector for connecting a plurality/one of the wiper medium channels to at least one fluid channel of the wiper blade, in particular in the region of a wiper blade adapter and/or a wiper arm adapter of the windshield wiper. Preferably, the power supply unit comprises at least one connection element for connection to an external unit, in particular, for example, an energy store of a vehicle, wherein the electrically conductive element/elements is/are at least partially formed as part of the connection element of the power supply unit. In particular, the connection element of the power supply unit is provided for electrically connecting the electrically conductive element with an external unit, in particular an energy accumulator.

By means of the embodiment of the supply device according to the invention, an advantageously simple, compact and inexpensive supply of power to the heating unit can be achieved. An advantageous simultaneous supply of the heating element and the further heating element can be achieved. An advantageously small number of different components can be realized. Low production and maintenance costs can thereby advantageously be achieved.

It is furthermore proposed that the heating element and the further heating element are directly electrically connected to one another. An advantageous simultaneous supply of the heating element and the further heating element can be achieved. Preferably, the heating element and the further heating element are connected to each other in series or in parallel, in particular depending on the arrangement and/or connection location of the electrically conductive element with respect to the heating element. Preferably, the heating element and the further heating element are arranged for releasable electrical connection to each other. In particular, the plurality/one of the electrically conductive elements and the heating element are arranged for releasable electrical connection to each other. Alternatively, it is conceivable for the heating element, the further heating element and/or the electrically conductive element/elements to be permanently electrically connected to one another.

It is furthermore proposed that the wiper medium supply unit comprises at least one connector for connecting the wiper medium channel to a wiper arm adapter and/or a wiper blade adapter of the windshield wiper, wherein the at least one heating element is arranged at least largely within the at least one wiper medium channel, wherein the wiper medium supply unit comprises at least one fluid-tight passage provided for guiding the heating element out of the wiper medium channel and the connector. An advantageously flexible connection of the heating element to the further heating element and/or the conductive element can be achieved. A single line along the wiper arm can advantageously be used for heating the wiper medium channel and for supplying the wiper blade with current via the through-opening. Additional connections can thus advantageously be dispensed with. Preferably, the heating element, in particular the conduction path of the heating element, is arranged at least for the most part within the two wiper medium channels, respectively. In a preferred embodiment, the wiper medium supply unit comprises at least two, in particular exactly two, fluid-tight passages, which are provided in each case for guiding the heating element, in particular in each case a conduction path of the heating element, out of one of the two wiper medium channels and the connector. Preferably, a connector is provided for connecting the wiping medium channel to a wiper arm adapter and/or a wiper blade adapter of a windshield wiper. In particular, the connector defines at least two connection regions for the separate fluidic connection of the two wiper medium channels to the wiper arm adapter and/or wiper blade adapter. Preferably, the two feedthroughs are each arranged on one of the two connection regions. In particular, the feedthrough is provided for guiding the heating element, in particular the conduction path of the heating element, out of one of the two connection regions of the connector. In particular, the through-opening/openings are provided for the fluid-technical separation of the connection region of the connector from the outer side of the connector, to which the heating element is led out, when the heating element is led out.

It is furthermore proposed that the passage is provided for at least substantially thermally insulating the heating element from at least one outer wall of the wiping medium channel and/or the connector which delimits the passage. An advantageously high service life of the wiping medium channel and/or of the connector can be achieved. "substantially thermally insulating" is to be understood in particular to mean that the body, in particular the through-opening, delimits the region or body, in particular the heating element, relative to the further region or the further body, in particular the outer wall, wherein the body, in particular on average, preferably without convection, has a thermal conductivity λ of less than 0.2W/(m · K), preferably less than 0.1W/(m · K), and preferably less than 0.05W/(m · K). Preferably, the passages are arranged in the outer wall of the wiping medium channel and/or the connector. Preferably, the feed-through is arranged at least partially, in particular at least largely, within a recess delimited by an outer wall of the wiper medium channel and/or the connector. In particular, the passage is preferably formed as part of a connector of the wiping medium supply unit and is connected to the base body of the connector, in particular in a material-fit and/or form-fit and/or force-fit manner. For example, the through-hole is constructed of rubber, plastic, or the like. Preferably, the passage defines at least one recess for accommodating the heating element, wherein the recess extends in particular from the connection region of the connector and/or from the wiping medium channel up to an outer side defined by the outer wall.

It is also proposed that the heating element has an average cross-sectional area which is configured differently than an average cross-sectional area of the other heating element. An advantageous division of the electrical power for heating between the heating element and the further heating element can be achieved, in particular independently of an active regulation between the two heating elements. Preferably, the heating element and the further heating element are provided for operation at the same voltage by the power supply unit, in particular the plurality of/one conducting elements. In particular, the heating element and the further heating element each have a different maximum length from one another. In particular, it is preferred that the heating element and the further heating element are designed such that the thermal energy to be output via the heating element and the further heating element, respectively, is regulated via the average cross-sectional area of the heating element. Preferably, the amount of thermal energy to be output by the heating element and the further heating element differs, in particular, depending on the design of the wiper medium channel/channels, the wiper blade, etc. Alternatively, it is conceivable that the heating element, in particular the average cross-sectional area of the heating element, is designed such that the heating element and the further heating element each emit at least substantially the same thermal energy in at least one operating state. The thermal energy radiated by the heating element and the further heating element is given in particular by the applied voltage and the electrical resistance of the respective heating element. In particular, the electrical resistance of the heating element is dependent on the specific electrical resistance of the material forming the respective heating element, the maximum length of the respective heating element and the average cross-sectional area of the respective heating element, wherein in particular the material and the maximum length are predefined by the design of the windshield wiper, in particular of the wiper blade and the wiper arm.

It is furthermore proposed that the wiper medium supply unit comprises at least one connector for connecting the wiper medium channel to a fluid channel of the wiper blade, in particular in the region of a wiper blade adapter and/or a wiper arm adapter of the windshield wiper, wherein the electrically conductive element and/or the further heating element is electrically connected to the heating element, in particular via a through-opening of the wiper medium supply unit, in the vicinity of the connector. The external connection of the wiping medium channel can advantageously be effected independently of the supply of current to the heating unit, in particular by means of purely hydraulic fluid connection elements. The connection of the heating element and the further heating element to one another and/or to the electrically conductive element can advantageously be integrated into the connection of the wiper blade and the wiper arm. The term "vicinity of the connector" is to be understood to mean, in particular, an area on the connector or within a minimum distance of at most 10cm, preferably at most 5cm and preferably at most 3cm from the connector, for example at a wiper blade adapter, a wiper arm adapter, a hose or tube forming at least one wiping medium channel, or the like. It is conceivable that the power supply unit comprises at least one connecting element, which is provided for the releasable electrical connection of the electrically conductive element and/or the further heating element to the heating element. Preferably, the connecting element of the power supply unit is provided for electrically connecting the electrically conductive element and/or the further heating element with the heating element in the vicinity of the connector. For example, the connection element of the power supply unit is configured as a plug, a contact terminal, or the like. It is conceivable that the connection element is designed as a part of the feedthrough and/or is integrated into the feedthrough, or that the connection element is provided for being arranged in the vicinity of the feedthrough for the electrical connection of the electrically conductive element and/or the further heating element to the heating element, in particular having a minimum distance of at most 5cm, preferably at most 4cm and preferably at most 3cm from the feedthrough, preferably outside the connection region of the connector.

It is furthermore proposed that the wiper medium supply unit comprises at least one fluid connection element which is provided for connecting the supply device, for example, to a wiper medium reservoir of a vehicle, wherein the heating element comprises at least two conducting paths which extend, in particular, within at least one wiper medium channel and which are electrically connected to one another on or within the fluid connection element. The external connection of the wiping medium channel can advantageously be effected independently of the supply of current to the heating unit, in particular by means of a purely hydraulic fluid connection element. The heating element is in particular formed in one piece, wherein in particular the two conducting paths form the heating element. "integral" is to be understood to mean, in particular, a material-to-material connection, for example by a welding process and/or an adhesive process, or, particularly advantageously, an integral molding, for example by production on a block, production from a cast part and/or production in a single-component or multi-component injection process. Preferably, the conduction paths are each designed as a section of the heating element along a partial region of the greatest length of the heating element. In particular, the heating element extends at least substantially completely through one of the two wiper medium channels, through the fluid connection element and through the other of the two wiper medium channels in both conduction paths.

Furthermore, it is proposed that the power supply unit, in particular the electrically conductive element, is designed separately from the fluid connection element, wherein in particular the power supply unit comprises an electrical connection element for connecting the electrically conductive element to an energy store, which is designed in particular outside the device, in particular as part of the vehicle. Advantageously, separately configured connection points for external connection of the power supply unit and the wiping medium supply unit can be realized. This enables an advantageously simple and rapid assembly of the supply device. Furthermore, an advantageously simple design of the connecting element of the supply device can be achieved. Preferably, the electrically conductive element/elements extend from the electrical connection element to a connection site with the heating element and/or another heating element, preferably to a connection element of the power supply unit.

It is furthermore proposed that the wiping medium supply unit and the power supply unit comprise a common connecting element for connecting the supply device to, for example, an energy accumulator and a wiping medium reservoir of the vehicle, wherein the electrically conductive element and the wiping medium channel are connected to the connecting element. An advantageously compact design of the connection region of the supply device can be achieved. Preferably, the common connecting element is provided for connecting the current-conducting element with the energy accumulator and for connecting the supply device, in particular the wiping medium channel/channels, with the wiping medium reservoir. In particular, the common connecting element is an alternative design of the separately constructed fluid connecting element and the electrical connecting element.

Furthermore, a windshield wiper is proposed, which has at least one supply device according to the invention, has at least one heatable wiper blade and has at least one wiping medium discharge unit.

The design of the windshield wiper according to the invention makes it possible to achieve an advantageously simple, compact and cost-effective supply of current. Advantageously, a small number of different electrical circuits of the windshield wiper can be realized. Advantageously, low production and maintenance costs can be achieved.

The supply device according to the invention and/or the windshield wiper according to the invention should not be limited to the above-described applications and embodiments. In particular, the supply device according to the invention and/or the windshield wiper according to the invention can have a number which is different from the number of individual elements, components and units mentioned here in order to satisfy the operating modes described here. Furthermore, in the value ranges given in the present disclosure, the values lying within the boundaries should also be regarded as disclosed and can be used arbitrarily.

Other advantages are derived from the following description of the figures. Two embodiments of the invention are shown in the drawings. The figures, description, and claims contain many combined features. Those skilled in the art will also consider these features individually and combine them into meaningful other combinations as appropriate.

Drawings

Fig. 1 shows a schematic view of a glass wiper according to the invention, which has a supply device according to the invention,

figure 2 shows a schematic sketch of a supply device according to the invention,

fig. 3 shows a schematic cross-sectional view of a connector of a wiping medium supply unit of a supply device according to the invention, an

Fig. 4 shows a schematic sketch of an alternative design of a supply device according to the invention.

Detailed Description

Fig. 1 shows a heatable windshield wiper 10a for a vehicle with a wiping medium outlet. The windshield wiper 10a includes a wiper arm 12a, a wiper blade 14a, and a supply device 16a. The wiper arm 12a comprises a wiper arm adapter 18a for connection to a wiper blade adapter 20a of a wiper blade 14a. The windshield wiper 10a comprises a wiping medium discharge unit 22a for discharging a wiping medium, in particular on the wiper blade 14a. The wiper blade 14a can be embodied in a heatable manner. In particular, the glass wiper 10a at least partially includes a heating unit 24a. The heating unit 24a is configured as a part of the supply device 16a. The supply device 16a comprises a wiping medium supply unit 26a, which comprises two wiping medium channels 28a for guiding a wiping medium to the wiper blade 14a. The two wiping medium channels 28a are each formed by a hose 30 a. The heating unit 24a comprises a heating element 32a for heating the two wiping medium channels 28a and a further heating element 34a for heating the wiper blade 14a, in particular a fluid channel and/or a wiper strip (not shown in the figures) of the wiper blade 14a. The heating element 32a extends through both wiping medium channels 28a. In particular, the heating element 32a is arranged within the hose 30 a. Exactly one conduction path 36a of the heating element 32a is arranged in each of the two wiper medium channels 28a. The further heating element 34a extends along a spring rail (not shown in the figures) of the wiper blade 14a. The further heating element 34a is provided for heating at least one fluid channel of the wiper strip and the wiper blade 14a. The supply device 16a includes a power supply unit 38a. The power supply unit 38a is provided in particular for supplying the heating unit 24a, in particular the heating element 32a and the further heating element 34a. The two wiping medium channels 28 a/the two hoses 30a extend along and/or within the wiper arm 12a, in particular within the wiper shaft of the wiper arm 12a, from a vehicle-side fastening point 40a of the wiper arm 12a as far as the wiper arm adapter 18a. Other designs of the wiper medium outlet unit 22a, in particular of the wiper medium channel 28a, the wiper arm 12a, the wiper blade 14a and/or the heating unit 24a, can also be considered.

Fig. 2 shows a functional diagram of the supply device 16a, wherein the wiper arm 12a and the wiper blade 14a are only schematically illustrated. The power supply unit 38a comprises two electrically conductive elements 42a which are provided for supplying power to the heating element 32a and the further heating element 34a. The heating element 32a and the further heating element 34a are directly electrically connected to each other. The heating element 32a and the further heating element 34a are connected in series. The conductive elements 42a are each designed as an electrical line, for example a cable or a wire, and as an electrode. In particular, the conductive element 42a is arranged for applying a voltage to the heating elements 32a, 34a.

The wiping medium supply unit 26a comprises a connector 44a for connecting the wiping medium channel 28a to the wiper blade adapter 20a of the windshield wiper 10a, wherein the heating element 32a is arranged at least largely within the wiping medium channel 28a, wherein the wiping medium supply unit 26a comprises two fluid-tight passages 46a which are provided for guiding the heating element 32a out of one of the wiping medium channels 28a and the connector 44a (see also fig. 3).

The other heating element 34a is electrically connected to the heating element 32a in the vicinity 48a of the connector 44a. The power supply unit 38a and/or the heating unit 24a comprise a connecting element 50a for releasably electrically connecting the heating element 32a and the further heating element 34a, in particular in the region of the wiper blade adapter 20a and the wiper arm adapter 18a. In particular, the connecting element 50a is configured as a plug. It is conceivable that the power supply unit 38a and/or the heating unit 24a comprise two connecting elements 40a for individually connecting the heating element 32a and the conducting path 36a of the further heating element 34a. The heating element 32a has an average thickness that is configured differently than the average thickness of the other heating element 34a.

The wiping medium supply unit 26a and the power supply unit 38a comprise a common connecting element 52a for connecting the supply device 16a with an energy accumulator 54a and a wiping medium reservoir 56a of the vehicle, wherein the electrically conductive element 42a and the two wiping medium channels 28a are connected with the connecting element 52 a. The common connecting element 52a is designed as a modular electrohydraulic connector (E-H connector). In particular, the connecting element 52a comprises at least partially, in particular at least largely, the conductive element 42a.

The connector 44a of the wiping medium supply unit 26a is shown in cross section in fig. 3. The connector 44a defines two connection regions 58a which are each provided for conducting a wiper medium from one of the two wiper medium channels 28a into the fluid channel of the wiper blade 14a. The connector 44a, in particular the connection region 58a L, is formed in a shape. However, curved designs of the connector 44a, in particular of the connection region 58a, are also conceivable. Preferably, the two wiping medium channels 28a are fluidically connected to a connector 44a. The hose 30a is preferably secured to the connector 44a. In particular, the connector 44a is provided for fastening to the wiper blade adapter 20 a. The passage 46a is provided for at least substantially thermally insulating the heating element 32a from an outer wall 60a of the connector 44a defining the passage 46 a. The connector 44a includes a base body defining two recesses 62a. The openings 46a are each arranged in one of the recesses 62a and close them in a fluid-tight manner. The passages 46a each at least partially define one of the connection regions 58a of the connector 44a. The recess 62a and/or the feed-through 46a are arranged in each case in a straight line behind the connection region of the connector 44a and one of the wiper medium channels 28a. Other embodiments of the connector 44a and/or the passage 46a are also conceivable, for example with a single passage 46a, which extends in particular over the two connection regions 58 a.

Another embodiment of the present invention is shown in fig. 4. The following description and the figures are substantially limited to the differences between the exemplary embodiments, wherein reference can in principle also be made to further exemplary embodiments, in particular to the figures and/or illustrations of fig. 1 to 3, with regard to identically numbered components, in particular with regard to components having the same reference numerals. To distinguish the embodiments, the letter a is provided after the reference numerals of the embodiments in fig. 1 to 3. In the embodiment of fig. 4, the letter a is replaced by the letter b.

Fig. 4 shows an alternative embodiment of a supply device 16b for a windshield wiper 10 b. In particular, the glass wiper 10b is configured as part of a vehicle and/or is provided for use with a vehicle. The supply device 16b is in particular part of the windshield wiper 10 b. The supply device 16b comprises a wiping medium supply unit 26b which comprises two wiping medium channels 28b for guiding a wiping medium to the wiper blade 14b of the windscreen wiper 10 b. The supply device 16b comprises a heating unit 24b which comprises a heating element 32b for heating the two wiping medium channels 28b and a further heating element 34b for heating the wiper blade 14b of the windshield wiper 10b, in particular a fluid channel and/or a wiper strip of the wiper blade 14b. The supply device 16b comprises a power supply unit 38b comprising two electrically conductive elements 42b arranged for supplying power to the heating element 32b and the further heating element 34b. In contrast to the supply device 16a shown in fig. 1 to 3, the heating element 32b and the further heating element 34b of the supply device 16b are connected in parallel to one another, wherein in particular the two electrically conductive elements 42b are connected to the heating element 32b and the further heating element 34b, in particular simultaneously, via a connection point 64 b. The connection location 64b is arranged between the heating element 32b and the further heating element 34b.

The electrically conductive element 42b and the further heating element 34b are electrically connected to the heating element 32b in the vicinity 48b of the connector 44b of the wiping medium supply unit 26 b. The power supply unit 38b comprises a connecting element 50b which is provided for electrically connecting the heating element 32b and the further heating element 34b and the two electrically conductive elements 42b and the two heating elements 32b, 34b to each other. The connecting element 50b is preferably provided for arrangement on the wiper blade adapter 20b of the wiper blade 14b and/or the wiper arm adapter 18b of the wiper arm 12b of the windshield wiper 10 b.

The wiper medium supply unit 26b comprises a fluid connection element 66b which is provided for connecting the supply device 16b with a wiper medium reservoir 56b of the vehicle, wherein the heating element 32b comprises two conductive paths 36b which each extend inside one of the two wiper medium channels 28b and which are electrically connected to one another inside the fluid connection element 66 b. The power supply unit 38b, in particular the electrically conductive element 42b, is designed separately and/or at a distance from the fluid connection element 66 b. The power supply unit 38b comprises an electrical connection element 68b for connecting the electrically conductive element 42b with the energy storage 54b of the vehicle.

Claims (10)

1. -a supply device (1691, 10b) for a heatable glass wiper (10a, 10b), having a wiping medium output, having at least one wiping medium supply unit (26a 26b) comprising at least one wiping medium channel (28a 28b) for guiding a wiping medium to a wiper blade (14a, 14b) of the glass wiper (10a, 10b), having a heating unit (24a, 2424b) comprising at least one heating element (32a 32b) for heating the wiping medium channel (28a 28b) and at least one further heating element (34a, 324b) for heating the wiper blade (114a, 14b) and/or the wiper strip, and having at least one power supply unit (34a, 34b) for electrically conducting electricity to heat the electrically conductive element (4234a.

2. The supplying device (16941) according to claim 1, wherein said heating element (32a 32b) and said further heating element (34a 34b) are directly electrically connected to each other.

3. Supply device (1694a, 1694b) according to claim 1 or 2, wherein the wiper medium supply unit (26a, 26b) comprises at least one connector (44a, 44b) for connecting the wiper medium channel (28a 28b) with a wiper arm adapter (18a, 18b) and/or a wiper blade adapter (20a, 20b) of the glass wiper (10a, 10b), wherein the at least one heating element (32a 32b) is at least mostly arranged within the at least one wiper medium channel (28a, 28b), wherein the wiper medium supply unit (26a, 26b) comprises at least one fluid-tight feedthrough (46a, 46b)) provided for connecting the heating element (32 a; 32b) From the wiping medium channel (28 a; 28b) And the connector (44 a; 44b) Leading out.

4. The supplying device (16941 b) according to claim 3, characterized in that said feedthrough (46a 46b) is provided for at least substantially thermally insulating said heating element (32a 32b) from at least one of the outer walls (60 a.

5. Supply device (16941 b) according to any of the preceding claims, characterized in that said heating element (32a, 32b) has an average thickness configured differently from the average thickness of the other heating element (34a, 34b).

6. -supply device (16940 a, 16940 b) according to any of the preceding claims, characterized in that the wiper medium supply unit (262626a, 26b) comprises at least one connector (44a, 44b) for connecting the wiper medium channel (28a 28b) with a fluid channel of the wiper blade (14a, 14b), in particular in the region of a wiper blade adapter (20a, 20b) and/or a wiper arm adapter (18a, 18b) of the glass wiper (10a, 10b), wherein the electrically conductive element (42a) and/or the further heating element (34a, 34b) is electrically connected with the heating element (3242b) in the vicinity (48a.

7. Supply device (16 b) according to any one of the preceding claims, characterized in that the wiper medium supply unit (26 b) comprises at least one fluid connection element (66 b) which is provided for connecting the supply device (16 b) with, for example, a wiper medium reservoir (56 b) of a vehicle, wherein the heating element (32 b) comprises at least two conducting paths (36 b) which extend, in particular, inside the at least one wiper medium channel (28 b), said conducting paths being electrically connected to one another on or inside the fluid connection element (66 b).

8. Supply device (16 b) according to claim 7, characterized in that the power supply unit (38 b), in particular the electrically conductive element (42 b), is configured separately from the fluid connection element (66 b), wherein in particular the power supply unit (38 b) comprises an electrical connection element (68 b) for connecting the electrically conductive element (42 b) with an energy accumulator (54 b).

9. Supply device (16 a) according to any one of claims 1 to 5, characterized in that the wiping medium supply unit (26 a) and the power supply unit (38 a) comprise a common connecting element (52 a) for connecting the supply device (16 a) with, for example, an energy accumulator (54 a) and a wiping medium reservoir (56 a) of a vehicle, wherein the electrically conductive element (42 a) and the wiping medium channel (28 a) are connected with the connecting element (52 a).

10. A windscreen wiper (10a, 10b) with at least one supply device (16a, 16b) according to any of the preceding claims, having at least one heatable wiper blade (14a, 14b) and at least one wiping-medium output unit (22 a.

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