DE102017123107A1 - Illuminable component and method for producing an illuminable component - Google Patents

Abstract

An illuminable component (10) and method for producing an illuminable component (10) are described, wherein the component (10) has a plastic part (12) which is at least semitransparent and has an at least semi-transparent surface (14). 18) and a light bulkhead. The light guide (18) is connected to the plastic part (12) via the light bulkhead and can be coupled to a lighting device, the light bulkhead consisting of a non-transparent adhesive tape (20) or at least one deformed, non-transparent plastic film (30).

Description

An illuminable component and method for producing an illuminable component are described, wherein the illuminable component has a plastic part which is at least semitransparent, has a light guide and a light barrier.

Such components can be used for example in motor vehicles ("Automotive Lightning") as decorative elements or functional elements. Decorative elements do not include lighting devices with a lettering or a contour. For example, a contour may be curved and follow the contour of a vehicle dashboard or side paneling. Functional elements do not conclude with operator displays or operating elements as well as optically visible information.

The illuminable component can be used in particular for ambient lighting, a "black panel" and a corresponding day-night design. In the automotive sector, homogeneously glowing lines or surfaces are required for this purpose. Illumination usually takes place via diffusely scattering plastics, which are coupled via a light guide with lighting devices. Such lighting devices typically include light emitting diodes.

State of the art

Fiber optics mounted on the back of plastic parts require a component for partitioning in order to avoid stray light. For each lighting solution in a vehicle, separate components have been manufactured to shield stray light. These components are made of plastic and require injection molding tools for manufacturing. Commonly used optical fibers are PMMA optical fibers, which in conjunction with a plastic light barrier often lead to "creaking noises".

A light guide made of PMMA is designed by complex simulation loops especially for a lighting application. For this purpose, an injection molding tool and an injection molding machine are required for production. The light-shield is in most cases replaced by an assembly process with the light guide, e.g. by ultrasonic welding, hot caulking or gluing.

Conventional assemblies that have such a light guide, a light barrier and a diffuser tend to "creak" and are expensive to design and manufacture. In the design and dimensioning time-consuming and costly adjustments must sometimes be made until the desired lighting result is present.

The current solutions require high investment costs for the simulation and the injection molding tools and are also inflexible.

task

Compared to the known methods for producing illuminable components and components with a light barrier, which is provided in a separate manufacturing process by injection molding, the object is to provide a simple trained illuminable component and a method for producing such a component, with costly investments such The provision of different tool shapes and adjustments can be dispensed with. A component is to be provided which provides a high degree of light insulation, it being possible to manufacture in a cost-effective and flexible manner.

solution

• - der Lichtleiter über das Lichtschott mit dem Kunststoffteil verbunden ist,
• - der Lichtleiter mit einer Beleuchtungseinrichtung koppelbar ist, und
• - das Lichtschott aus einem nicht transpatenten Klebeband oder mindestens einer verformten, nicht transparenten Kunststofffolie besteht.

The above object is achieved by an illuminable component, comprising a plastic part, which is formed semitransparent and having an at least semi-transparent surface, a light guide and a light barrier, wherein

• the light guide is connected to the plastic part via the light barrier,
• - The light guide is coupled with a lighting device, and
• - The light barrier consists of a non-transpatent tape or at least a deformed, non-transparent plastic film.

The provision of a light curtain is facilitated by the use of a flexible material for the light bulkhead. In particular, no special tools for the light bulkhead and no injection molding or separate Spritzgießherstellungsverfahren required. The light barrier can be provided either via a non-transparent adhesive tape or a deformable, non-transparent plastic film.

A non-transparent adhesive tape may, for example, be a black adhesive tape. The light guide is connected via the adhesive tape directly to the back of the plastic part. It is therefore not necessary to produce a light barrier. The flexible design of the light bulkhead also ensures that in the case of deviations in the shape and size of the light guide in various components, a high Lichtabschottung is achieved. By the individual deformability of the adhesive tape, this can adapt to the contour of the light guide.

A light barrier made of a deformed plastic film can be produced by deep drawing. To provide a composite comprising at least the light barrier and the plastic film, the light guide is brought into a defined shape. Alternatively, the optical fiber can be fitted in a deformed plastic film. Preferably, however, the light guide is prefabricated. In a thermoforming plant, the deformation process of the plastic film can be carried out. The deformation of the plastic film can be done in various ways. In a first embodiment, the forming system can have adjoining tool surfaces which form the contour and the shape of the plastic film. In a further embodiment, the plastic film can be placed on an already deformed light guide and then deformed, wherein the plastic film is deformed according to the formation of the light guide.

On the composite thus produced consisting of a plastic film and the light guide, a second plastic film is applied, which is transparent. The second plastic film serves as a protective film for the light guide and fixes the light guide in the desired position. In addition, the second plastic film can also take over the function of a diffuser by suitable choice of film.

In other embodiments, the second plastic film is not formed or more difficult to deform as the first plastic film.

The composite of deformed plastic film, light guide and second plastic film is then applied to the back of the plastic part. For application, ultrasonic welding, hot caulking or gluing can take place. In other embodiments, other methods may be performed.

The plastic part is formed such that it is at least partially transparent, in particular semitransparent, and has a corresponding surface, so that the introduced via the light guide light is visible with a view of the surface of the plastic part.

As a light guide, a laterally light-emitting optical fiber can be used. Such light guides are particularly suitable for arrangement on the back of a component. The light can be deliberately introduced into the back and thus into the surface of the plastic part.

The light guide can have diameters between 0.2 - 3.5 mm. Such light guides are designed to be flexible and make it possible to reproduce different contours. However, flexible, thin optical fibers are difficult to handle. By forming a flexible light barrier by an adhesive tape or a deformed plastic film, especially light-emitting fiber optic light guides with a small diameter can be handled more easily laterally.

The light guide may comprise or form at least one symbol, one character and / or one structure. The light guide can form a lettering, for example. In addition, the optical waveguide can form a curved course, with such a shaping being provided in particular for decorative lighting elements on trim parts in the vehicle.

The non-transparent plastic film may have a reflective layer in further embodiments. The reflection layer is preferably located on the side which faces the light guide. A black coating "swallows" the light emitted by the light guide, so that stray light is avoided. A reflection layer has the advantage that light emerging from the light guide is reflected and can exit only at the points provided for it. The illumination is thereby considerably improved. In further embodiments, a reflection layer can also be provided in the case of an adhesive tape.

• - Fertigen eines Kunststoffteils, welches mindestens semitransparent ausgebildet ist und eine mindestens semitransparente Oberfläche aufweist,
• - Verformen einer ersten nicht transparenten Kunststofffolie, wobei eine Kontur für einen aufzunehmenden Lichtleiter ausgebildet wird,
• - Einbringen eines Lichtleiters in die Kontur der ersten Kunststofffolie,
• - Aufbringen einer zweiten transparenten Kunststofffolie auf die erste Kunststofffolie und Verbinden der zweiten Kunststofffolie mit der ersten Kunststofffolie, und
• - Verbinden des Verbunds aus erster Kunststofffolie, Lichtleiter und zweiter Kunststofffolie mit der Rückseite des Kunststoffteils.

The above object is also achieved by a method for producing an illuminable component of the variants described above, comprising the following steps:

• Manufacture of a plastic part which is at least semitransparent and has an at least semi-transparent surface,
• Deforming a first non-transparent plastic film, wherein a contour is formed for a light guide to be received,
• - introducing a light guide into the contour of the first plastic film,
• Applying a second transparent plastic film to the first plastic film and joining the second plastic film to the first plastic film, and
• - Connecting the composite of first plastic film, light guide and second plastic film with the back of the plastic part.

Such a method for producing an illuminable component is much faster to perform than the production of such components according to the method steps of the prior art. In particular, on a second Be omitted injection molding device or a second injection molding process for the provision of a light barrier. The light barrier is provided by a flexible, non-transparent plastic film, by means of which the light guide is connected to a second plastic film and via the second plastic film to the plastic part.

The deformation of the first plastic film can be done by deep drawing. Additionally or alternatively, a deformation by a heat input and a corresponding shaping can take place. The shaping can be provided by a template or a negative or by the light guide itself. The light barrier is specially designed for the required light guide. Inserting a light guide in a rigid light barrier, as known in the art, is therefore no longer necessary. Above all, the flexible light barrier, formed by the first plastic film, also allows a partitioning and fastening of the light guide, without causing "creaking noises". As a result, damage to the optical fiber is prevented or reduced. In addition, the light barrier, formed by the first plastic film, can be combined directly in a system with the light guide. As a result, a very high foreclosure of the light is achieved.

The method results in a cost saving due to the use of a simple thermoforming tool. The assembly has a high flexibility, since only a small vote is necessary. In addition, no "creaking" occurs and by changing the plastic films further properties can be integrated.

In addition, limitations of edge-to-edge illumination can be reduced in conjunction with laterally light-emitting fiber optic fibers.

The plastic part may additionally have a receptacle in which the light guide is received. The receptacle can also be a negative of the contour of the light guide or a planar recess which receives a portion of the light guide. In the provision of a composite of the first plastic film, light guide and second plastic film, a deformation of the second plastic film can also take place.

The composite can be bonded to the back of the plastic part by gluing, hot caulking or welding. In particular, an ultrasonic welding method is suitable as the welding method. The connection of the individual plastic films together can be done by gluing or also via a heat input. The connection of the first plastic film with the second plastic film is therefore easy and quick to carry out. For this purpose, at least one of the plastic films may have a heat-activatable adhesive layer.

The first plastic film preferably consists of a black film or has on the surface facing the light guide on a black configuration, which serves to seal off the light within the light guide.

The light guide can be made in particular before being introduced into the contour in shape. Deformation of the light guides can be done in various ways. For example, the light guide can be a flexible light guide, such as a fiber optic light guide, or a light guide made in an injection molding process. In other embodiments, flexible or heat-transformable optical fibers can be used.

• - Fertigen eines Kunststoffteils, welches mindestens semitransparent ausgebildet ist und eine mindestens semitransparente Oberfläche aufweist,
• - Aufbringen eines Lichtleiters auf eine Rückseite des Kunststoffteils, wobei die Form des Lichtleiters während des Aufbringens ausgebildet wird, und
• - Aufbringen eines nicht transparenten Klebebands mindestens im Bereich des Lichtleiters, wobei der Lichtleiter über das Klebeband an der Rückseite des Kunststoffteils befestigt wird.

The above object is also achieved by a method for producing an illuminable component according to one of the variants described above, comprising the following steps:

• Manufacture of a plastic part which is at least semitransparent and has an at least semi-transparent surface,
• - Applying a light guide to a back side of the plastic part, wherein the shape of the light guide is formed during the application, and
• - Applying a non-transparent adhesive tape at least in the region of the light guide, wherein the light guide is attached via the adhesive tape on the back of the plastic part.

The adhesive tape used is preferably a black adhesive tape which effects a partitioning of the light guided in the light guide. The adhesive tape can be applied to the light guide so that it comes directly into contact with the light guide. The lighting over the light guide is all the better, the smaller is a distance between the light guide and the light barrier. The sticking makes it possible to bring the adhesive tape directly to the light guide in abutment. This results in no areas with larger or varying distances to a manufactured in an injection molding process light barrier, as may occur in the prior art.

The plastic part may have a recess in the form of the contour or the course of the light guide to be received on the rear side. In the manufacture of the component is after the production of the plastic part either such a contour in the Inserted back or the contour is introduced during manufacture (eg in the injection molding process). Subsequently, a light guide is inserted into the contour, wherein the light guide protrudes the recess for the contour. Thereafter, the light guide is fixed on the back of the plastic part via the adhesive tape. These processing steps can preferably be done by machine. For this purpose, a robot can be provided, which brings the light guide into the recess and then attached with an adhesive tape on the back. For this purpose, a pressing of the adhesive tape to the back of the plastic part and the light guide must be performed such that the tape comes directly into contact with the light guide and the back of the plastic part and no air pockets.

In a further manufacturing method without a recess in the back of the plastic part of the light guide is applied to the back and fixed on the adhesive tape thereon. This procedure can also be machine-assisted or completely automated.

The plastic part may be at least partially painted by the adhesive tape in all of the methods described herein prior to applying the first plastic film, optical fiber, and second plastic film or optical fiber composite. The painting can be done on the surface and / or on the back of the plastic part. The partial coating can leave areas free to be illuminated via the light guide.

The light guide is supplied with light via an illumination device, preferably a light-emitting diode. Particularly in the case of laterally light-emitting optical waveguides, high-quality illumination can be provided when light is introduced laterally into an elongate optical waveguide.

In the embodiments with a plastic film and a second plastic film, between which the light guide is received, they can be easily adaptable and applied to different contours. The composite of the plastic films and the light guide is independent of the complexity of the contour and other design elements of the plastic part. In addition, the plastic films can also be adapted to breakthroughs on the back of the plastic part. The plastic part can be made in an injection molding process, which can be made in various forms quickly and inexpensively.

In addition, providing a composite of first plastic film, optical fiber, and second plastic film, as well as sticking a light pipe to the back of a plastic part, is quick and easy to accomplish without "creaking" in the assembly, requiring each component to be designed for an application or high investment costs for simulation and injection molding tools result. In addition, the known from the prior art configurations of a light barrier are inflexible.

Further advantages, features or design options will become apparent from the following description of the figures of non-limiting embodiments to be understood.

list of figures

• 1 eine schematische Darstellung eines Bauteils mit einem Kunststoffteil und einem über ein Klebeband an der Rückseite des Kunststoffteils angebrachten Lichtleiters;
• 2 eine schematische Darstellung eines Bauteils mit einem Kunststoffteil und einem über eine erste Kunststofffolie und eine zweite Kunststofffolie auf der Rückseite des Kunststoffteils aufgebrachten Lichtleiters;
• 3 ein Ablaufdiagram zur Herstellung eines Bauteils gemäß 2; und
• 4 ein Ablaufdiagram zur Herstellung eines Bauteils gemäß 1

In the drawings shows:

• 1 a schematic representation of a component with a plastic part and a mounted on an adhesive tape on the back of the plastic part light guide;
• 2 a schematic representation of a component with a plastic part and a light applied over a first plastic film and a second plastic film on the back of the plastic part light guide;
• 3 a flow diagram for the production of a component according to 2 ; and
• 4 a flow diagram for the production of a component according to 1

Substantially numbered components in the drawings essentially correspond to each other unless otherwise specified. Furthermore, it is not intended to describe and demonstrate elements that are not essential to the understanding of the teachings disclosed herein.

Detailed description of exemplary embodiments

1 shows a schematic representation of a component 10 with a plastic part 12 and one over a tape 20 at the back 16 the plastic part 12 attached light guide 18 ,

The light guide 18 has in the embodiment a diameter between 0.2 -3.5 mm and is flexible. The plastic part 12 is produced in an injection molding process and brought into shape. The plastic part 12 is at least semi-transparent. That means that over the light guide 18 introduced light at least in certain areas of the plastic part 12 on its surface 14 exit. For this purpose, the light guide 18 connected to a lighting device. An illumination device can be provided, for example, by a light-emitting diode be at least at one of the end portions of the flexible light guide 18 Bring light into this.

The light guide 18 is preferably as a side light-emitting light guide 18 , in particular as a glass fiber light guide. Such light guides 18 can be easily deformed because they are flexible.

In order to achieve the highest possible quality of lighting, in particular a foreclosure to avoid stray light is required, need light guide 18 a light barrier. In the prior art, a light barrier is provided by a separate component manufactured in an injection molding process, and the optical fiber must be incorporated therein. The provision of a light barrier in an injection molding process has several disadvantages. On the one hand, separate injection molding tools must be provided and the light bulkhead be provided in a separate process. In addition, a special design of the light curtain must be made for each component. Moreover, in a light guide used in such a manufactured Lichtschott to "creaking noises", which are perceived as disadvantageous. Such a light barrier is inflexible and therefore can only be used specifically for a design.

The provision of a photocell via an adhesive tape 20 has advantages over. The light bulkhead 20 does not have to be pre-assembled but is used when applying the light guide 18 to the back 16 the plastic part 12 applied. About the tape 20 becomes the light guide 18 at the back 16 attached. In the area of the light guide 18 makes the tape 20 a bulge 22 out.

The advantage of an adhesive tape 20 compared to a rigid light barrier lies in the flexible design of the adhesive tape 20 , The tape can be directly in contact with the light guide 18 be brought so that a good foreclosure is achieved. In particular, better illumination of the plastic part 12 on the surface 14 be achieved because stray light is avoided. The tape is a black tape and therefore designed for Lichtabschottung accordingly. The formation of the adhesive tape depends on which diameter of the light guide 18 and which contour through this light guide 18 provided. optical fiber 18 For example, you can emulate lettering or symbols. In addition, fiber optics can 18 also only line courses or be arranged areally to an ambient lighting of the plastic part 12 provide. The plastic part 12 can already be provided during its manufacture or in a downstream process with a contour recess, in which the light guide 18 is used. The light guide must be there 18 not completely in the receiving contour of the plastic part 12 be included.

2 shows a schematic representation of a component 10 with a plastic part 12 and one over a first plastic film 30 and a second plastic film 40 on the back side 16 the plastic part 12 applied light guide 18 ,

The component 10 also has a flexible light barrier, which in the second embodiment by the first plastic film 30 is formed. The first plastic film 30 is a non-transparent plastic film and faces the second plastic film 40 a smaller thickness. The first plastic film 30 can be black or colored. The first non-transparent plastic film 30 may additionally have a reflective layer, which is on the side of the plastic film 30 which is the light guide 18 is facing. The reflection layer reflects this out of the light guide 18 leaking light. About the reflection layer is a very good illumination of the area to be illuminated of the plastic part 12 reached. The areas of the light guide 18 that are not directly for lighting are from the first plastic layer 30 Surrounded with the reflective layer, leaving light just above with the plastic part 12 can emerge in related areas. In all other places, the light is reflected. The reflection of the light significantly increases the illumination.

The first plastic film 30 can be preformed in a thermoforming process, wherein a contour for the light guide 18 is trained. The contour includes bulges 32 , as in 2 shown. Subsequently, the light guide 18 into the contours or bulge 32 introduced and then a second plastic film 40 with the first plastic film 30 connected. The second plastic film 40 is a transparent plastic film, so that of the light guide 18 output light the second plastic film 40 can penetrate. The plastic part 12 is formed analogously to the first embodiment and allows a light emission at the surface 14 ,

The second plastic film 40 has a greater thickness than the first plastic film 30 and therefore can be heavier than the first plastic film 30 or not deformable.

After applying the second plastic film 40 on the first plastic film 30 These are permanently connected. This can be done for example by a thermal process. Subsequently, the composite of first plastic film 30 , second plastic film 40 and the intervening in the contours or the bulge 32 included optical fiber 18 at the back 16 the plastic part 12 applied.

The application can preferably be done by gluing. The bonding can be achieved by heat input, without the need for separate adhesives. In other embodiments, at least one of the plastic films 30 or 40 have a heat-activated adhesive layer. Alternatively, ultrasonic welding or hot caulking can take place.

The second plastic film 40 can also serve as a diffuser and cause a corresponding light scattering. The in the 1 and 2 The various embodiments shown have the advantage that a flexible light barrier is provided. In addition, either over the tape 20 or the first plastic film 30 achieved that this directly on the light guide 18 abut and no clearances between the light bulkhead and the light guide 18 to be provided.

In addition, the composite of 2 or the adhesive film 20 from 1 just on the back 16 the plastic part 12 glued on. The tape 20 does not need to be pre-assembled and can be done while applying the light guide 18 with the plastic part 12 get connected. An upstream processing of a light barrier is not required. In addition, no design and dimensioning of the light barrier must be done. at 2 becomes only the first plastic film 30 in a thermoforming process provided with a contour and the light guide 18 used and on serving as a protective and diffuser film second plastic film 40 with the first plastic film 30 connected. This composite can then be on the back 16 the plastic part 12 glued on. Likewise, no sizing and design of an inflexible light curtain is required. The first plastic film 30 In contrast, can be brought in a much faster and cost-effective deep drawing process in the form. In alternative embodiments, an already deformed optical fiber 18 be used as a negative in the shaping.

In further embodiments, an already deformed optical fiber 18 on a second plastic film 40 put on top and on it the first plastic film 30 be applied. Subsequently, a deformation, for example by means of heat input, wherein the contour for the light guide 18 in the first plastic film 30 through the light guide 18 is trained.

3 shows the process steps of a production process 300 for the production of a component 10 according to 2 ,

In a first process step 310 becomes the plastic part 12 produced. This is done in one step 312 closed a mold of an injection molding machine and injected plastic. After injection of the plastic cures the plastic and the plastic part 12 can be used for further editing. In one process step 314 the opening of the tool and the plastic part takes place 12 is taken by a robot. Alternatively, the actions performed by a robot - also in the further process steps - can be performed manually.

In one process step 316 becomes the plastic part 12 stored by a robot on a conveyor belt and fed to a further processing. In one process step 318 a worker removes the plastic part 12 and puts this in an assembly plant. Should the plastic part 12 be painted, a packaging is done in advance in one step 320 , The painting is done for example by covering areas of the surface 12 , which are then passed through the light guide 18 should be illuminated. Accordingly, the back can also 16 have free areas. Additionally, in one process step 322 a visual inspection of the plastic part 12 be performed. After any necessary painting and a visual inspection takes place in the assembly plant in one step 324 a positioning of the assembly Lichtschott and the light guide 18 , The assembly is in a separate manufacturing step 326 produced. The light barrier comprises the first plastic film 30 with the contour in which the light guide 18 is included as well as the second plastic film 40 , which serves at least as a protective film for the light barrier. The processing step 326 must before the step 324 be performed.

After in step 324 the assembly in relation to the plastic part 12 has been positioned takes place in one step 328 the mounting of the assembly. The attachment can be done in one step 330 by gluing, hot caulking or welding.

After mounting the assembly 328 this is finished.

In one process step 332 a function check is carried out. The component 10 is connected to a light source to check a lighting. In addition, a further visual inspection can be carried out.

Subsequently, in one step 334 the assembly, which has successfully passed the functional check, packed and in one step 336 delivered.

The production of the module light barrier and light guide 18 in step 326 can take various forms, as already stated above. This may be the first plastic film 30 be deformed in a thermoforming process and then the optical fiber 18 be used. Alternatively, the plastic film 30 on the preformed light guide 18 applied and against the second plastic film 40 be deformed.

Attaching the assembly to the back 16 the plastic part 12 in step 330 can by providing a separate adhesive or by heating the plastic film 40 respectively. The plastic film 40 can be designed accordingly, so that a compound of the second plastic film 40 with the back 16 the plastic part 12 is provided (eg via at least one heat-activated adhesive layer). In a hot caulking, the back 16 the plastic part 12 have protruding mandrels or cones. The assembly has corresponding openings for this purpose and is positioned so that the pins or mandrels are received in the openings. Subsequently, the stiffening takes place, wherein a permanent attachment is provided. In addition, the assembly may have further openings through which conduits or other components may be routed.

4 shows a production process 400 for the production of a component 10 according to 1 ,

The production of the component 10 begins with the injection molding of the plastic part 12 in a process step 410 , The tool is closed and plastic injected (step 412 ), and then in one step 414 the tool is open and the finished plastic part 12 taken by a robot.
The plastic part 12 is then in a process step 416 stored by a robot on a conveyor belt and fed to a further processing. In one process step 418 a worker removes the plastic part 12 , It can also be a visual inspection of the plastic part 12 by the worker in one step 422 be performed. In addition, in one process step 420 a packaging of the plastic part 12 take place if a painting is desired. In a coating, in particular areas of the surface 14 and / or back 16 the plastic part 12 stay clear so lighting over the surface 14 can be provided.

After the worker has the plastic part 12 removed, he puts the plastic part 12 in a process step 424 in an assembly plant.

In one process step 428 a robot positions the light guide 18 and sticks the light guide 18 with a tape 20 , The light guide 18 is doing over the tape 20 with the back 16 the plastic part 12 connected. In a further process step 432 In addition, a functional test and part identification can be carried out.

When positioning the light guide 18 becomes the later contour or the course of the light guide 18 formed directly at the attachment only. At the in 3 shown production process 300 is the light guide 18 either already before the introduction into the contour of the first plastic film 30 or preformed by the introduction into the contour. Therefore, the light guide points 18 in the production process 300 before attachment to the back 16 the plastic part 12 already its form and course on. In the production process 400 the alignment of the light guide takes place only when applied to the back 16 the plastic part 12 ,

Subsequently, a worker removes in one process step 430 the component 10 and pack this if during the functional test in step 432 it was found that the finished component 10 works properly. After packing in step 434 the delivery to a customer takes place in step 436 , Manually performed steps can also be performed by a robot.

The differences between the manufacturing processes 300 and 400 consist in the alignment and shaping of the light guide 18 and the application of the flexible light curtain. However, both methods are faster, simpler and thus cheaper to carry out than the attachment and manufacture of an inflexible light barrier, as known in the art. The flexible design of the plastic film 30 and the adhesive tape 20 allow it directly into contact with the light guide 18 bring to. Tolerance-related deviations as in the prior art therefore can not occur. The configuration of a flexible light barrier described herein is therefore not only simpler and cheaper to produce than known designs of a light barrier, but also has a better avoidance of stray light.

LIST OF REFERENCE NUMBERS

10

component

12

Plastic part

14

surface

16

back

18

optical fiber

20

duct tape

22

bulge

30

Plastic film

32

bulge

40

Plastic film

300

manufacturing process

310-336

steps

400

manufacturing process

410-436

steps

Claims (11)

An illuminable component, comprising a plastic part (12) which is at least semitransparent and has an at least semi-transparent surface (14), a light guide (18) and a light barrier, wherein - The light guide (18) via the light barrier with the plastic part (12) is connected, - The light guide (18) is coupled to a lighting device, and - The light barrier consists of a non-transparent adhesive tape (20) or at least one deformed, non-transparent plastic film (30). Illuminated component after Claim 1 wherein the light guide (18) is a laterally light-emitting fiber optic light guide. Illuminated component after Claim 1 or 2 , wherein the light guide (18) has a diameter between 0.2 - 3.5 mm. Illuminable component according to one of Claims 1 to 3 wherein the light guide (18) comprises or forms at least one symbol, a sign and / or a structure. Illuminable component according to one of Claims 1 to 4 wherein the non-transparent plastic film (30) has a reflective layer. Method for producing an illuminable component (10) according to one of Claims 1 to 5 , comprising the following steps: - producing a plastic part (12) which is at least semitransparent and has an at least semi-transparent surface (14), - deforming a first, non-transparent plastic film (30), wherein a contour for a light guide (18 ), - introducing a light guide (18) in the contour of the first plastic film (30), - applying a second transparent plastic film (40) on the first plastic film (30) and connecting the second plastic film (40) with the first plastic film ( 30), and - bonding the composite of first plastic film (30), light guide (18) and second plastic film (40) to a back side (16) of the plastic part (12). Method according to Claim 6 wherein the deformation of the first plastic film (30) is effected by deep drawing. Method according to Claim 6 or 7 wherein the composite is bonded to the back side (16) of the plastic part (12) by gluing, hot caulking or welding. Method according to one of Claims 6 to 8th , wherein the light guide (18) is brought into shape before being introduced into the contour. Method for producing an illuminable component (10) according to one of Claims 1 to 4 , comprising the following steps: - producing a plastic part (12) which is at least semitransparent and has an at least semitransparent surface (14), - applying a light guide (18) to a back side (16) of the plastic part (12), wherein the Forming of the light guide (18) is formed during the application, and - applying a non-transparent adhesive tape (20) at least in the region of the light guide (18), wherein the light guide (18) via the adhesive tape (20) on the back (16) of the Plastic part (12) is attached. Method according to one of Claims 6 to 10 wherein the plastic part (12) is at least partially painted by means of the adhesive tape (20) before applying the composite or the light guide (18).

Images