DE102022132479A1 - An interior trim part of a means of transport, a method for producing an interior trim part and a means of transport having such an interior trim part - Google Patents

Abstract

The present disclosure is directed to an interior trim part (200) of a means of transport, comprising: a housing (202) with a rear wall (206) and at least one side wall (204); a light-permeable carrier (208) connected to the housing (202); a decorative layer (212) applied to the light-permeable carrier (208); at least one light module (300), wherein the at least one light module (300) comprises: at least one light source (306) located in the housing (202), at least one light guide (308) for guiding light from the at least one light source (306) to and through the decorative layer (212), and a film (210) with a masking pattern integrated on the light-permeable carrier (208); and at least one HMI module (400) arranged within the housing (202) beneath the decorative layer (212), wherein the at least one HMI module (400) is supported by the light-transmissive carrier (208), wherein the at least one HMI module (400) and the at least one lighting module (300) are arranged from the rear side of the interior trim part (200), and wherein the film (210) is applied to the light-transmissive carrier (208) in a seamless manner. The present disclosure is further directed to a means of transport comprising such an interior trim part (200) and a method for producing such an interior trim part (200).

Description

This disclosure relates to an interior trim part of a means of transport and a method for producing an interior trim part of the means of transport. Furthermore, the present disclosure relates to a means of transport having such an interior trim part.

In modern means of transport, the number of available transport-related functions is constantly increasing. Such functions can be the activation of a window lifter, interior lighting, air conditioning, a sound system or the adjustment of rear-view mirrors. In addition to the activation of the functions, many of them have parameters that can be adjusted. In the case of air conditioning, such parameters are the temperature to which the air inside the means of transport should be conditioned or the intensity of the fans that circulate the air. In the case of a sound system, adjustable parameters can concern the volume and acoustics.

Modern means of transport are also equipped with a number of devices or systems that facilitate the maneuvering of the means of transport. These devices or systems may include lighting systems, driver assistance systems, communication systems, monitoring systems, air flow systems, energy absorbers or other functional devices or systems. Such systems and devices can be controlled manually by activating or deactivating various parameters.

In many cases, activation and adjustment are carried out using buttons or sensors located in the interior trim of the vehicle.

In newer approaches, the activation and setting of transport-related functions are integrated into the surface of interior trim parts. For this purpose, electronic modules are arranged behind the visible surfaces of interior trim parts, which can be activated by touching the visible surface. The interior trim part thus receives the additional function of a human-machine interface (HMI).

Interior trim parts of a vehicle are sometimes provided with lighting to identify buttons or sensors or to give an aesthetic effect to the interior of the vehicle.

Interior trim parts of a vehicle are sometimes equipped with a heating module to heat the surface of the trim.

Usually, the interior trim parts are provided with an HMI module or the lighting module. Combining both the HMI module and the lighting module in the interior trim part becomes a tedious task and the design of the trim part becomes complicated. In addition, the fact that the HMI and lighting modules contain electrical and electronic components sometimes leads to the failure of such components. Therefore, it becomes difficult to replace the components in the interior trim part.

In addition, the components of the interior trim part must be integrated with minimal use of connecting components. In addition, the components of the lighting module must be precisely positioned to achieve good lighting effects and improve the aesthetic impact of the vehicle.

Reference is made to DE 202019005292 U1 , which reveals a panel with display and operating functionality, as well as EP3 107 760A1 , which reveals a translucent panel part. In many cases, it is impossible to dismantle and replace the electrical or electronic components separately from the other trim parts. If a component needs to be replaced, the entire trim part has to be replaced, which is cumbersome and expensive. In addition, positioning errors and seamless integration of the trim part components cannot be avoided.

An aim of the present disclosure is to provide an interior trim part by means of which the above-mentioned disadvantages can be eliminated or at least reduced. In particular, it is an object to provide an interior trim part which has both an HMI module and a lighting module with improved removability and error-free functionality. Furthermore, the present disclosure aims to provide a means of transport which has such an interior trim part and a method for producing such an interior trim part.

The object is achieved by the features specified in claims 1, 12 and 13. Advantageous embodiments are the subject of the dependent claims.

• - ein Gehäuse mit einer Rückwand und zumindest einer Seitenwand;
• - einen mit dem Gehäuse verbundenen lichtdurchlässigen Träger;
• - eine auf den lichtdurchlässigen Träger aufgebrachte Dekorschicht;
• - zumindest ein Lichtmodul, wobei das zumindest eine Lichtmodul aufweist:
  • ◯ zumindest eine Lichtquelle, die sich in dem Gehäuse befindet,
  • ◯ zumindest einen Lichtleiter zum Leiten von Licht von der zumindest einen Lichtquelle zu der und durch die Dekorschicht, und
  • ◯ eine Folie mit einem auf dem lichtdurchlässigen Träger integrierten Maskierungsmuster, und
• - zumindest ein HMI-Modul, das in dem Gehäuse unterhalb der Dekorschicht angeordnet ist, wobei das zumindest eine HMI-Modul durch den lichtdurchlässigen Träger getragen wird,

wobei das zumindest eine HMI-Modul und das zumindest eine Beleuchtungsmodul von der Rückseite des Innenverkleidungsteils angeordnet sind.According to an embodiment of the present disclosure, an interior trim part of a means of transport comprises:

• - a housing with a rear wall and at least one side wall;
• - a translucent support connected to the housing;
• - a decorative layer applied to the translucent support;
• - at least one light module, wherein the at least one light module comprises:
  • ◯ at least one light source located in the housing,
  • ◯ at least one light guide for guiding light from the at least one light source to and through the decorative layer, and
  • ◯ a film with a masking pattern integrated on the translucent carrier, and
• - at least one HMI module arranged in the housing below the decorative layer, wherein the at least one HMI module is supported by the translucent carrier,

wherein the at least one HMI module and the at least one lighting module are arranged from the rear side of the interior trim part.

According to the present disclosure, the interior trim part includes both the HMI module and the lighting module. The HMI module and the lighting module are arranged in the housing from the rear side of the interior trim part. This has an advantage that when a component of the at least one HMI module and/or the at least one lighting module needs to be replaced, the entire trim part does not need to be removed and thus the interchangeability of the components of the interior trim part is improved. It can also make the interior trim part more cost-effective.

In addition, the film with the masking pattern is separated from the decorative layer. This can ensure precise positioning of the structure before applying the decorative layer.

In addition, the film with the masking pattern is integrated into the translucent carrier without additional connecting elements. This ensures seamless integration of the film into the translucent carrier.

The term 'means of transport' means any motor-driven means of transport, with or without a trailer, controlled by a driver, where the driver requires information about persons, other means of transport or objects in the (near) surroundings of the means of transport in order to drive safely. For example, means of transport are cars, trucks, tractors or trailers.

The term "light source" refers to a device from which light originates and is emitted. The light source may include one or more light-emitting devices or solid-state light sources. The term "solid-state" generally refers to light emitted by solid-state electroluminescence, as opposed to light bulbs or fluorescent tubes. For example, the light source may include a semiconductor light emitting diode (LED) or laser diode, an OLED, a polymer light emitting diode (PLED), an LED lamp package, an LED chip or an LED die, or an assembly of one or more of these devices. It is understood that the light source may also include a color-changing LED, that is, the LED may be configured to change color when needed.

The term "light guide" refers to a light-conducting element. The light guide can be made of transparent material. The light can be emitted from the light guide with a consistently uniform luminance.

The term "decorative layer" refers to an outermost layer of the interior trim part that is exposed to the interior of the vehicle. The decorative layer can be made of translucent material such as artificial leather, foils or textiles. In a further embodiment, this decorative layer can be made of perforated opaque material.

The term "carrier" refers to a rigid structure that is arranged within the housing of the interior trim part. The carrier is designed to hold the components of the light module and the HMI module in place. The carrier is made of a translucent material such as polycarbonate or polymethyl methacrylate.

The term "HMI module" stands for human machine interface module. The HMI module has components such as switches, buttons, sensors, a printed circuit board (PCB), a haptic feedback device or lighting elements. The HMI module is designed to interact with the occupant. This means that the occupant can control various parameters of the vehicle by using the HMI module.

In a further embodiment, at least one light module has at least one lighting line and/or at least one large-area lighting. This has the advantage that several lighting functions can be provided in one panel part. In addition, the aesthetic effect of the interior of the vehicle can be improved.

In a further embodiment, the at least one light source is arranged on at least one of the rear wall and the at least one side wall of the housing. At least one of the rear wall and the at least one side wall of the housing can have at least one reflective surface. This configuration of the at least one light source and the reflective surface can ensure an even distribution of the light across the entire interior trim part.

In a further embodiment, the film is integrated with the translucent carrier by one of a 2K injection molding process, overmolding, back-molding, gluing and pad printing. This configuration ensures a seamless and jointless integration of the film with the translucent carrier.

In another embodiment, the film is made of an opaque material with a masking pattern made of cutouts that transmit light, and/or the film is made of transparent material with a masking pattern printed with opaque material to transmit light.

In a further embodiment, the HMI module is configured to interact with at least one transportation vehicle occupant, in particular to receive at least one input from the at least one occupant and to provide at least one output to the at least one occupant. The HMI module may comprise at least one sensor and at least one PCB. The at least one sensor may be constructed on the at least one circuit board. In a further embodiment, the at least one sensor may be constructed separately from the at least one PCB. The at least one sensor and the at least one PCB may ensure receiving an input from the occupant and controlling various parameters of the transportation vehicle.

In a further embodiment, the interior trim part further comprises a heating module arranged beneath the decorative layer. The heating module may provide heating or cooling of the trim part. This may improve the functionality of the trim part, for example, for the comfort of an occupant, a cup containing a beverage may be kept at a certain temperature when held in a cup holder on a trim part, or the entire trim surface may be kept at a certain temperature.

In another embodiment, the decorative layer is made of translucent material. This can ensure that the light coming from the housing reaches the outside of the interior trim part.

Another aspect of the present disclosure is directed to a means of transport comprising an interior trim part according to any of the previously discussed embodiments. The technical effects and advantages discussed with respect to the present interior trim part equally apply to the means of transport.

• - Bereitstellen eines Gehäuses mit einer Rückwand und zumindest einer Seitenwand;
• - Anordnen von zumindest einem Lichtleiter und zumindest einer Lichtquelle innerhalb des Gehäuses;
• - Erzeugen eines lichtdurchlässigen Trägers und einer Folie durch einen von einem 2K-Spritzguss-, Umspritz-, Hinterspritzgieß-, Klebe- und Tampondruckprozess, wobei die Folie ein Maskierungsmuster aufweist und wobei die Folie und der lichtdurchlässige Träger auf eine nahtlose Weise integriert sind;
• - Anordnen des lichtdurchlässigen Trägers und der Folie über dem Lichtleiter innerhalb des Gehäuses;
• - Anordnen von zumindest einem HMI-Modul innerhalb des Gehäuses, wobei das zumindest eine HMI-Modul durch den lichtdurchlässigen Träger getragen wird; und
• - Anordnen einer Dekorschicht über dem lichtdurchlässigen Träger und dem HMI-Modul.

Another aspect of the present disclosure is directed to a method for manufacturing an interior trim part according to any of the previously discussed embodiments, comprising the following steps:

• - Providing a housing with a rear wall and at least one side wall;
• - Arranging at least one light guide and at least one light source within the housing;
• - producing a translucent carrier and a film by one of a 2K injection molding, overmolding, back injection molding, adhesive and pad printing process, wherein the film has a masking pattern and wherein the film and the translucent carrier are integrated in a seamless manner;
• - Arranging the translucent carrier and the film over the light guide inside the housing;
• - arranging at least one HMI module within the housing, wherein the at least one HMI module is supported by the translucent carrier; and
• - Arranging a decorative layer over the translucent carrier and the HMI module.

The technical effects and advantages discussed with respect to the present interior trim part apply equally to the means of transport. In short, if a component of the at least one HMI module and/or the at least one lighting module needs to be replaced, the entire trim part does not need to be removed, which makes the replaceability ity of the components of the interior trim part. In addition, it can make the interior trim part cost-effective. In addition, the film with the masking pattern is separated from the decorative layer. This can ensure precise positioning of the masking pattern before applying the decorative layer. In addition, the film with the masking pattern is integrated into the translucent carrier without additional connecting means. This can ensure seamless integration of the film into the translucent carrier.

In a further embodiment, the method comprises providing a heating module beneath the decorative layer prior to the step of arranging the decorative layer. The heating module may provide heating or cooling of the trim part. This may improve the functionality of the interior trim part, for example, for the comfort of an occupant, a cup containing a beverage when held in a cup holder on a trim part may be maintained at a particular temperature, or the entire trim surface may be maintained at a particular temperature.

• 1 eine perspektivische Ansicht eines Innenverkleidungsteils, das an einer Türverkleidung eines Verkehrsmittels montiert ist, gemäß einer Ausführungsform der vorliegenden Offenbarung zeigt,
• 2 eine Vorderansicht des Innenverkleidungsteils von 1 gemäß einer Ausführungsform der vorliegenden Offenbarung zeigt,
• 3 eine Schnittansicht des Innenverkleidungsteils entlang einer Schnittlinie A-A in 2 gemäß einer Ausführungsform der vorliegenden Offenbarung zeigt, und
• 4 eine Schnittansicht des Innenverkleidungsteils entlang einer Schnittlinie A-A in 2 gemäß einer weiteren Ausführungsform der vorliegenden Offenbarung zeigt.

The present disclosure will be described in detail with reference to the accompanying drawings, wherein

• 1 a perspective view of an interior trim part mounted on a door panel of a transportation vehicle according to an embodiment of the present disclosure,
• 2 a front view of the interior trim part of 1 according to an embodiment of the present disclosure,
• 3 a sectional view of the interior trim part along a section line AA in 2 according to an embodiment of the present disclosure, and
• 4 a sectional view of the interior trim part along a section line AA in 2 according to another embodiment of the present disclosure.

1 shows a perspective view of an interior trim part 200. In the embodiment shown, the interior trim part 200 is mounted on a door panel 100 of a vehicle (not shown). In other embodiments, the interior trim part 200 can be mounted on the dashboard, instrument panel, center console, or other interior surface of a vehicle. As shown in the figure, the interior trim part 200 has at least one light module 300 and at least one HMI module 400. The light module 300 has at least one large-area lighting 302 and at least one lighting line 304. The large-area lighting 302 has several lights distributed over a large area of the interior trim part 200. The large-area lighting 302 provides the lighting function of the interior trim part 200 and improves the aesthetic effect of the interior of the vehicle. The lighting line 304 comprises a light in the form of a long line from one end of the interior trim part 200 to the other end. The lighting line 304 provides the interior trim part 200 with a lighting function and also improves the aesthetic effect of the interior of the vehicle. The lighting line 304 can also be used as a warning light for the occupant. The light module 300 comprises at least one in 2 shown light source 306.

2 shows a front view of the interior trim part, which shows the arrangement of the at least one light source 306 in the housing 202 of the interior trim part 200. The interior trim part 200 has a housing 202 with a rear wall 206 and at least one side wall 204 (in 3 shown). As shown in 2 shown, the at least one light source 306 is arranged on the side wall 204 of the housing 202. In the embodiment shown, the at least one light source 306 comprises a plurality of light sources 306 arranged on the side wall 204 of the housing 202. In a further embodiment, the at least one light source 306 can be arranged on the rear wall of the housing 202. The at least one side wall 204 and the rear wall 206 are in 3 clearly shown.

3 shows a sectional view of the interior trim part 200 of 2 along a section line AA. As shown, the interior trim part 200 comprises the housing 202. The housing 202 comprises a hollow structure made of a rear wall 206 and at least one side wall 204. The housing may be made of polycarbonate. The housing 202 is designed to hold the components of the interior trim part in place. The rear wall 206 and/or the at least one side wall 204 has a reflective surface (not shown). The reflective surface directs the light coming from the at least one light source 306 to the outside of the interior trim part 200. The reflective surface can be achieved by polishing/painting the wall of the housing 202 with a material that has a reflective property. Alternatively, the reflective surface can also be achieved by gluing a reflective sheet to the wall of the housing 202. In one embodiment, the reflective reflective surface may be made of a material having reflective properties, such as polypropylene or polycarbonate. In one embodiment, the reflective surface may be made by injection molding or milling a material having reflective properties.

The light module 300 further comprises at least one light guide 308. The light guide 308 is arranged within the housing 202 and is supported by the side walls 204 of the housing 202 and a light-permeable carrier 208. The light guide 308 is made of a transparent material such as PMMA or PC. The light guide 308 is designed to guide light from the at least one light source 306 to the light-permeable carrier 208.

The translucent carrier 208 is connected to the housing 202. In the illustrated embodiment, the translucent carrier 208 is connected to the side walls 204 of the housing 202. The translucent carrier 208 is made of a translucent material such as PMMA or PC. The carrier 208 may contain material such as fiberglass to increase the stability of the part. The translucent carrier 208 is configured to transmit light received from the light guide 308 to a decorative layer 212.

The interior trim part 200 further comprises a film 210 integrated into the light-transmissive carrier 208. The film 210 has a masking pattern that allows light to pass through in the shape of the pattern. The pattern can be any shape, text, symbols, a logo, or a combination thereof. The masking pattern can be achieved by a film made of opaque material such as polycarbonate (PC) and having cutouts of the pattern in the film 210. In another embodiment, the film 210 is made of a transparent material such as PC, TPE or TPO and has a masking pattern printed with opaque material to allow light to pass through in the shape of the pattern. In another embodiment, the film 210 has a portion of the film made of opaque material having cutouts of the pattern and a portion of the film made of transparent material having a masking pattern printed with opaque material. The film 210 is integrated into the translucent carrier 208 in a seamless manner. In one embodiment, the film 210 is integrated by one of 2K injection molding or by overmolding. In another embodiment, the film 210 is integrated into the translucent carrier 208 by gluing. In another embodiment, the film 210 is integrated into the translucent carrier 208 by back-molding the printed film 210. Alternatively, the integration of the film 210 and the translucent carrier 208 can also be carried out by injection molding followed by pad printing of the masking pattern.

The interior trim part 200 further comprises the HMI module 400 arranged in the housing 202. The HMI module is supported by the side walls 204 and the translucent carrier 208. The HMI module 400 comprises a PCB 404 and at least one sensor 402. The HMI module 400 may also comprise a button (not shown). The HMI module 400 is configured to interact with at least one transportation vehicle occupant, in particular to receive at least one input from the at least one occupant and to provide at least one output to the at least one occupant. The at least one sensor 402 and the at least one PCB 404 ensure receiving an input from the occupant and controlling various parameters of the transportation vehicle.

The interior trim part 200 further comprises the decorative layer 212. The decorative layer is the outermost layer of the interior trim part 200. The decorative layer 212 is arranged on the translucent carrier 208 and the HMI module 400 such that the decorative layer 212 covers the component of the interior trim part 200. The decorative layer 212 consists of translucent material such as artificial leather, foils or textiles. In a further embodiment, the decorative layer 212 can be made of perforated, opaque material. The decorative layer 212 is designed to transmit light coming from the light source 306 and through the light guide 308 and the translucent carrier 208 in order to provide a lighting function for the interior of the vehicle. The interior trim part 200 can also have a 4 shown heating module 500.

4 shows another embodiment of a sectional view of the interior trim part 200 of 2 along a section line AA. All components of the 3 shown previous embodiment remain the same, except for the addition of a heating module 500 in the interior trim part 200. The heating module 500 is arranged below the decorative layer 212. The heating module 500 can provide heating or cooling of the trim part 200. This improves the functionality of the trim part 200, for example, for the comfort of an occupant, a cup with a beverage when held in a cup holder (not shown) on a trim part 200 can be kept at a certain temperature, or the entire trim surface can be kept at a certain temperature.

It is noted that the HMI module 400 and the lighting module 300 are arranged from the back of the interior trim part 200. In one embodiment, the heating module 500 may be arranged from the back of the interior trim part 200. This ensures that when a part needs to be replaced, the entire trim part 200 does not have to be removed. This improves the replaceability of the interior trim part 200.

The embodiment of the present disclosure also discloses a means of transportation comprising the interior trim part 200 and a method of manufacturing the interior trim part 200. The method includes the step of providing the housing 202 having the rear wall 206 and at least one side wall 204. The method further includes the step of arranging the light guide 308 and the at least one light source 306 within the housing 202. The method further includes manufacturing a light-transmissive carrier 208 and the film 210 by one of a 2K injection molding, overmolding, back-injection, adhesive and pad printing process. The film 210 with masking pattern and the light-transmissive carrier 208 are integrated in a seamless manner. The method further includes the step of arranging the light-transmissive carrier 208 and the film 210 over the light guide 308 within the housing 202. The method further comprises the step of arranging the at least one HMI module 400 in the housing 202. The HMI module 400 is supported by the translucent carrier 208. The method further comprises the step of arranging the decorative layer 212 over the translucent carrier 208 and the HMI module 400. In one embodiment, the method further comprises the step of arranging the heating module 500 beneath the decorative layer 212 prior to the step of arranging the decorative layer 212.

Although the subject matter of the present disclosure has been described in language specific to structural features and/or acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as examples of implementing the claims, and other equivalent features and acts are intended to fall within the scope of the claims, i.e., the features disclosed in the foregoing description, claims, and drawings may be essential to practicing the present disclosure in its various embodiments, both individually and in any combination. The embodiments shown here are merely examples of the present disclosure and are therefore not to be construed as limiting. Alternative embodiments that one skilled in the art would consider are equally covered by the scope of the present disclosure.

Reference list

100

Door panel

200

Interior trim part

202

Housing

204

Side wall of the housing

206

Rear panel of the housing

208

translucent carrier

210

foil

212

Decorative layer

300

Lighting module

302

large-area lighting

304

Lighting line

306

at least one light source

308

Light guide

400

HMI module

402

sensor

404

PCB

500

Heating module

A-A

Cutting line

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. 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

• DE 202019005292 U1 [0010]
• EP 3107760 A1 [0010]

Claims (13)

Interior trim part (200) of a means of transport, comprising: - a housing (202) with a rear wall (206) and at least one side wall (204); - a translucent carrier (208) connected to the housing (202); - a decorative layer (212) attached to the translucent carrier (208); - at least one light module (300), wherein the at least one light module (300) comprises: o at least one light source (306) located in the housing (202), o at least one light guide (308) for guiding light from the at least one light source (306) to and through the decorative layer (212), and o a film (210) with a masking pattern integrated on the translucent carrier (208); and - at least one HMI module (400) arranged within the housing (202) below the decorative layer (212), wherein the at least one HMI module (400) is carried by the light-permeable carrier (208), wherein the at least one HMI module (400) and the at least one light module (300) are arranged from the rear side of the interior trim part (200). Interior trim part (200) after Claim 1 , wherein the at least one light module (300) has at least one illumination line (304) and/or at least one large-area illumination (302). Interior trim part (200) after Claim 1 , wherein the at least one light source (306) is arranged on at least one of the rear wall (206) and the at least one side wall (204) of the housing (202). Interior trim part (200) after Claim 1 wherein at least one of the rear wall (206) and the at least one side surface (204) of the housing (202) has at least one reflective surface. Interior trim part (200) after Claim 1 , wherein the film (210) is connected to the translucent carrier (208) by one of 2K injection molding, overmolding, back-injection molding, gluing or pad printing. Interior trim part (200) according to one of the Claims 1 or 5 , wherein the film (210) is made of an opaque material having a masking pattern made of cutouts to allow light to pass through, and/or the film (210) is made of transparent material having a masking pattern printed with an opaque material to allow light to pass through. Interior trim part (200) after Claim 1 , wherein the HMI module (400) is designed to interact with at least one transport vehicle occupant, in particular to receive at least one input from the at least one occupant and to provide at least one output to the at least one occupant. Interior trim part (200) after Claim 1 , wherein the HMI module (400) has at least one sensor (402) and at least one circuit board (404). Interior trim part (200) after Claim 1 , which further comprises a heating module (500) arranged below the decorative layer (212). Interior trim part (200) after Claim 1 , wherein the decorative layer (212) is made of a translucent material. Means of transport comprising an interior trim part (200) according to one of the preceding claims. Method for producing an interior trim part (200) according to one of the Claims 1 - 10 , comprising the following steps: - providing a housing (202) with a rear wall (206) and at least one side wall (204); - arranging at least one light guide (308) and the at least one light source (306) within the housing (202); - producing a light-transmissive carrier (208) and a film (210) by one of 2K injection molding, overmolding, back-injection molding, gluing and pad printing, wherein the film (210) has a masking pattern and wherein the film (210) and the light-transmissive carrier (208) are integrated in a seamless manner; - arranging the light-transmissive carrier (208) and the film (210) over the light guide (308) within the housing (202); - arranging at least one HMI module (400) within the housing (202), wherein the at least one HMI module (400) is supported by the translucent carrier (208); and - arranging a decorative layer (212) over the translucent carrier (208) and the HMI module (400). Procedure according to Claim 12 , the method further comprising providing a heating module (500) beneath the decorative layer (212) prior to Step of arranging the decorative layer (212).

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