WO2022135970A1

WO2022135970A1 - Illuminable decorative part having a moulded part that has a lighting strip at the rear, and method for producing the decorative part

Info

Publication number: WO2022135970A1
Application number: PCT/EP2021/085156
Authority: WO
Inventors: Zhikai YU
Original assignee: Hib Trim Part Solutions Gmbh
Priority date: 2020-12-21
Filing date: 2021-12-10
Publication date: 2022-06-30
Also published as: DE102020134419A1

Abstract

The invention relates to an illuminable decorative part (1) having a moulded part (10) which has a two- or three-dimensional visible surface (11) on a visible side and a carrier surface (12) on a rear side that faces away from the visible side, wherein the moulded part (10) has a plurality of lighting points (13) at which light can shine through the moulded part (10) from the carrier surface (12) to the visible surface (11) and which are distributed over the visible surface (11) in accordance with a predetermined pattern, wherein the decorative part (1) also has a flexible lighting strip (20) having a plurality of contact points (21) distributed along the longitudinal direction (L) of the lighting strip (20), wherein one lighting means (22) of a plurality of lighting means (22) is positioned and electrically contacted at at least some of the contact points (21) in each case in accordance with a predetermined distribution and corresponding to the number of lighting points (13), wherein the lighting strip (20) is positioned at the rear of the moulded part (10) along a path that connects the lighting points (13) and wound about an axis (A) and to each lighting point (13) is assigned a lighting means (22) so that a light of the lighting means (22) can be emitted from the rear side through the moulded part (10) to the visible side at each lighting point (13).

Description

Illuminatable decorative part with a molded part with a light strip arranged on the back and method for producing the decorative part

Description:

The invention relates to an illuminated decorative part and a method for its production.

A large number of different decorative parts that can be illuminated are known in the prior art. Provision is often made for the illumination of a large-area printed circuit board, which can be rigid or flexible, to be arranged essentially over the entire area on a molded part of the decorative part. On the circuit board are then on individual places illuminants provided, with large areas on the circuit board remain free because they are not needed.

Correspondingly, if these areas remain free, there is a high waste of material and space.

In addition, when there is a change in the decorative part and in particular when there is a change in the molded part, the printed circuit board intended for the lighting must be adapted to the resulting new boundary conditions, since otherwise it can usually no longer be arranged on the molded part in the intended way.

Even with other solutions known in the prior art, in which the lamps are contacted, for example, by a special circuit board connecting only the lamps, this usually has to be completely revised if the boundary conditions change, so that minor changes to the decorative part require extensive and therefore expensive adjustments are necessary.

The invention is therefore based on the object of overcoming the aforementioned disadvantages and providing an illuminated decorative part with a molded part and a method for its production, in which an illumination function is realized on the molded part without wasting material and in a simple manner and the assembly that provides the lighting does not have to be fully adapted to a change in the molded part.

This object is achieved by the combination of features according to claim 1.

According to the invention, an illuminated decorative part is proposed with a molded part which has a two- or three-dimensional visible surface on one visible side and a rear side facing away from the visible side has carrier surface. The carrier surface can, for example, be designed to correspond to the visible surface. In addition, the molded part can, for example, define or encircle an interior space, in which case the visible surface can be an exterior surface and the carrier surface can be an interior surface facing the interior space. In the case of such a molded part surrounding an interior space, the entire outer surface is understood as pointing to the visible side and the entire inner surface as pointing to the rear. Alternatively, a molded part can also form an interior space, in which case the surface facing the interior space can be understood as the visible surface and the outer surface facing away from it as the support surface. According to the invention, the molded part has a large number of luminous points which are to be illuminated in order to illuminate the decorative part. For this purpose, the shaped part can be transilluminated at the light points from the carrier surface to the visible surface, so that light emitted from the back is visible at the light points on the visible side. The luminous points are distributed over the viewing area according to a predetermined pattern. Furthermore, the decorative part has a flexible light strip with a multiplicity of contact points distributed along a longitudinal direction of the light strip. One illuminant from a plurality of illuminants is arranged on at least some of the contact points, with the illuminants arranged at the contact points being able to be seen as part of the luminous strip. The light sources arranged at the contact points, which can be, for example, side LEDs, top LEDs or LEDs in general, are arranged and electrically contacted according to a predetermined distribution and according to the number of light points, so that preferably each light point has exactly one light source and exactly one luminous point is assigned to each illuminant. It is particularly relevant to the invention that the light strip is wound or coiled around an axis on the back of the molded part and is arranged along a path connecting the light points, in which the light strip extends the axis in the circumferential direction around the axis rotates. The axis can be, for example, an imaginary axis and in particular a vertical axis of the molded part or the decorative part. The helical arrangement or arrangement wound around the axis can result in a helical or spiral arrangement of the luminous strip. It is also provided that each luminous point is assigned a lamp, so that light can be emitted from the lamps from the back or from the carrier surface through the molded part to the visible side or to the visible surface.

The basic idea of the invention is therefore, in the case of an illuminated decorative part, in which the prior art would have provided a large-area rigid or flexible printed circuit board for contacting the lamps or for transilluminating the points of light, to replace the large-area printed circuit board with a light strip which, according to is wound through the position of the luminous dots specific path and arranged on the back of the molded part. The light sources can be arranged according to the position of the light points at a large number of predetermined contact points of the light strip, so that on the one hand the light strip can be used for different variants of the decorative part that can be illuminated, and on the other hand the entire light strip does not have to be modified when the decorative part is changed, since each only the position of the lamps can be adjusted or more or other lamps can be arranged differently on the light strip or at the contact points.

If the decorative part provides an interior space defined by a molded part, in which the light strip is also arranged, this can be filled, for example by injection, after the helical arrangement of the light strip, so that the light strip is filled by the filling material, such as a plastic, in the molding is fixed.

An advantageous development provides that the light points each as an opening is formed, which passes through the molded part from the support surface to the visible surface. The openings each form an opening, in which case the lighting means can also extend at least in sections into the respective openings or through the respective openings to the visible side.

Alternatively, the molded part can also have transparent or translucent sections at least in the area of the luminous dots and can accordingly also be completely transparent or translucent, so that the molded part can also be transilluminated at the luminous dots. In this variant, the molded part can function integrally as a decoration or display layer, behind which the lighting means are “hidden” or by which the lighting means are covered.

Furthermore, a variant is advantageous in which the light strip bears against the carrier surface at least in sections. The light strip can be connected to the molded part and glued, for example, to the adjacent sections. Also advantageous is an embodiment in which the light strip lies against the carrier surface over its entire extent. The luminous strip can not only be glued but instead or additionally also be connected to the carrier surface by mechanical holders or fastening elements. It is also possible for the luminous band to be cast into the molded part immediately during production of the latter, with separate production and only superficial fixing of the luminous band by gluing or, for example, clamping, allowing simpler and more flexible production. If the fixation is realized by gluing, the use of a heat-activatable and/or pressure-activatable adhesive is advantageous. When gluing or using an adhesive, this can also be arranged as an adhesive tape on the light strip or along the path on the molded part or the carrier element explained later,

Is only a partial concern of the light strip on the carrier surface provided, the luminous strip can bear against the carrier surface at least in a respective region of the carrier surface directly adjoining the luminous points. Sections of the luminous strip, which each run between two luminous points and preferably between two luminous points directly adjacent to one another, can rest at least in part over their entire surface on the carrier surface and/or at least partially protrude from the carrier surface. This means that, for example, the first sections of the strip running from illuminated point to illuminated point are in contact over the entire surface and second sections running from illuminated point to illuminated point are only directly adjacent to the illuminated points and protrude from the carrier surface between the illuminated points. The protrusion of these sections can lead to an arcuate course in each case, in which the light strip bulges out in sections towards the axis. Such a protruding or bulging is advantageous because a tolerance of the light strip or a tolerance regarding the positions of the light points can be compensated by the light strip without having to adjust the position of the light source on the light strip or the contacting of the light source with the contact points .

As an alternative to an embodiment in which the light strip rests exclusively on the molded part or is arranged directly on the carrier surface of the molded part, in a further advantageous variant the decorative part has a carrier element which is arranged on the rear of the molded part. In this case, the light strip rests at least in sections on the carrier element and is arranged between the carrier element and the molded part. It is advantageous here that the light strip can first be arranged on the carrier element and wound along the carrier element. The carrier element can then be arranged in a predetermined arrangement on the back of the molded part, so that the lighting means of the luminous strip are again assigned to the luminous points in the predetermined manner. In order not to laboriously remove the carrier element from the molded part to have to direct, these coding elements can provide, through which only a specific arrangement relative to each other is possible. With respect to a surface facing the molded part, the carrier element can rest on a large or full surface of the molded part or define a gap between the surface of the carrier element facing the molded part and the carrier surface of the molded part in which the light strip is arranged. If such a carrier element is provided, the molded part can be designed purely as a decorative element, which determines the appearance of the decorative part on the visible side, but does not have to provide any load-bearing capacity.

Accordingly, in a variant with a carrier element it can be provided that the light strip is fixed to the carrier element, for example by gluing or by fastening elements, and that the carrier element and/or the light strip is fixed to the molded part or the molded part to this. In this case, the carrier element serves both as a carrier for the light strip and as a carrier for the molded part.

The light strip is preferably formed from a flexible strip-shaped carrier strip with conductor tracks arranged thereon or therein and the contact points. The contact points are also electrically contacted with the conductor tracks and are provided at regular and preferably uniform intervals along the longitudinal direction of the luminous strip.

In order to be able to easily contact the lamps at the contact points with the conductor tracks, an advantageous variant of the invention also provides that at all contact points or only at the contact points at which a lamp is provided, an electrical interface for electrical contacting of the Conductor tracks is provided with the respective light source. The electrical interfaces can each be in the form of soldering pads, contact holes or sockets, to which the lighting means can be electrically connected. Especially if the Interfaces are designed as solder pads, the lamps can be SMD components, so that they can be contacted by surface mounting. Alternatively, however, the interfaces can be designed as contact holes and thus for contacting THD components, i.e. for through-hole assembly. If the interfaces are provided as plug-in sockets, it is advantageous that the lighting means can have plug-in connectors that correspond thereto, so that they form a plug-in connection with one another. Accordingly, the lamps can be easily installed or repositioned by plugging them in.

Also in order to be able to easily compensate for a tolerance of the light strip in the longitudinal direction, a tolerance in the position of the light points on the molded part or a change in the position of the light points or a change in the decorative part, a further variant of the invention provides that the interfaces are designed to enable electrical contacting of the respective lighting means along an area extending in the longitudinal direction of the lighting strip. For example, solder pads of an interface can extend along the longitudinal direction of the light strip, so that a light source to be contacted with these solder pads can be displaced along the longitudinal direction of the light strip to adapt to the associated light points on the solder pads and mounted or positioned at the appropriate position, i.e. on the Solder pads can be soldered.

Furthermore, it is also possible for the interfaces to be designed to enable electrical contacting of the respective lamps in an area transverse to the longitudinal direction, i.e. in the transverse direction of the light strip, so that a lamp can be positioned in the transverse direction on the light strip or the Carrier tape can be moved and contacted at the appropriate position. In general, the light strip can have a surface facing the visible side, on which the lighting means can be arranged, and a surface facing the axis, ie the rear surface. If further electrical components, such as resistors, semiconductors or ICs, are to be arranged on the carrier strip or integrated into the luminous strip, the luminous strip can have a large number of additional contact points and components with which electrical contact is made at the additional contact points. The components are arranged on a surface of the carrier strip facing the carrier surface of the molded part or on a surface of the carrier strip facing away from the carrier surface of the molded part and facing the axis and are contacted with the conductor tracks. In particular, components arranged on the back of the carrier strip, which are therefore arranged on the surface of the carrier strip facing the axis, are advantageous since they face away from the molded part and therefore do not have to be taken into account in the molded part. If components are to be provided on the side or surface of the carrier tape facing the carrier surface, pockets or recesses can be provided for them in the molded part or on the carrier surface, so that the further electrical components extend at least in sections into the molded part.

As mentioned above, the light sources can be designed as side LEDs or top LEDs, for example, which emit light sideways or “upwards”. Although the light sources do not emit light in a single direction, but usually in a cone shape, the light sources can be assigned lighting directions in which they emit light in a predetermined manner. An advantageous development provides that the lamps are divided into at least two groups, with the lamps in each group being designed to emit light along a common lighting direction which differs from the lighting directions of the lamps in the other groups. Correspondingly, for example, the lighting means of a first group can light in a first lighting direction and, for example, orthogonally emit light in the longitudinal direction of the luminous strip and the luminous means of a second group emit light in a second luminous direction opposite to the first luminous direction. The light sources of a group do not have to be arranged in immediate succession on the light strip for this purpose. For example, the light sources of different groups can be provided alternately on the light strip.

A further aspect of the invention relates to a method for producing an illuminated decorative part, which can be the decorative part according to the invention explained above, so that the developments described with regard to the decorative part and their features can also be applied directly to the method. The decorative part has a molded part which has a two- or three-dimensional visible surface on a visible side and a carrier surface on a rear side facing away from the visible side. The molded part has a multiplicity of luminous points at which the molded part can be transilluminated from the carrier surface to the visible surface. The luminous dots can be formed, for example, by breakthroughs or openings which run through the molded part from the carrier surface to the visible surface. The luminous points are distributed over the viewing area according to a predetermined pattern. According to the proposed method, a three-dimensional path wound around an axis is determined, which can be spiral or helical, for example. The luminous dots arranged according to the predetermined pattern on the carrier surface are connected to one another in series by the path. It is preferably provided that the path does not run in a serpentine manner or in a zigzag pattern along the carrier surface. The path should not have any sharp changes in direction, so that the light strip can follow the path without being damaged. An extension of the path or the light strip over several levels is achieved by the coiled shape around the axis. Provision is also made for the three-dimensional path to be converted into a two-dimensional line along which, according to the predetermined pattern, ter are provided at intervals determined by the pattern and the path lighting positions corresponding to the luminous points. The three-dimensional path is thus “stretched” to form the line, with the illumination positions still being provided along the line at distances corresponding to the distances between the luminous points along the path. A flexible light band is then provided with a length at least corresponding to the length of the line, which has a large number of contact points along its longitudinal direction. There are preferably a large number of contact points, which are each provided directly adjacent to one another, so that the number of contact points (clearly) exceeds the number of lighting positions or points of light and lighting means can be contacted with the contact points adapted to the respective path. At the contact points, which coincide along the longitudinal direction of the light strip with an illumination position corresponding to a light point, a light source is arranged and electrically contacted with the respective contact point, so that one light source is assigned to a light point. The closest contact point in each case, which is preferably closest in a mounting direction along which the light band is mounted on the molded part, can also be understood as congruent with the corresponding lighting position, so that the light band is not stretched during assembly to compensate for tolerances, but gathered or can be arranged in sections projecting arcuate from the molded part. In addition, the light strip is wound around the axis on the back of the molded part, i.e. arranged spirally, and one light source is arranged at each light point, so that light from the light sources can be emitted from the carrier surface or from the rear through the formed part to the visible surface or to the visible side can be emitted.

The arrangement of the luminous strip on the rear side with respect to the molded part can essentially be divided into two, depending on the decorative part to be produced species are carried out. If the molded part is not to provide any load-bearing capacity and is to be used in particular as a decorative and/or display layer, the decorative part can also have a carrier element which can be arranged on the back of the molded part. Correspondingly, the light strip is arranged at least in sections on the carrier element and in particular on a surface of the carrier element pointing towards the shaped part, so that the carrier element with the light strip arranged thereon can be mounted or connected to the shaped part. In this case, the luminous strip is then arranged in the manner of a sandwich between the carrier element and the molded part. If the molded part itself is to provide load-bearing capacity and be designed to be correspondingly stable, the light strip can also be arranged directly and at least in sections on the rear support surface of the molded part.

The basic idea of the method is again to determine a path wound helically around an axis, along which the luminous points can be connected in series and to provide a luminous band specially provided for this path, which provides luminous means at the correct locations.

Since changes in direction in the plane are only possible to a limited extent in the case of a light strip with a flexible carrier strip, this is arranged coiled or helically, which means that no major changes in direction of the strip are necessary.

In particular, in the method, a slope of the path and correspondingly also a slope of the luminous strip can be constant within a tolerance range and the path can wind helically or spirally around the axis.

When determining the path, a three-dimensional model of the carrier surface with the light points is preferably also created. The three-dimensional For example, a spatial surface is converted to a two-dimensional surface by unfolding. A line connecting the luminous points is then determined on the two-dimensional surface, which line forms the path when the two-dimensional surface is converted back into the three-dimensional carrier surface.

In order not to have to provide a completely new light strip for different decorative parts that can be illuminated or if the decorative part or the shaped body is changed, it is provided that an identical part is used as the carrier strip of the light strip, which is preferably separated from an endless strip regardless of the variants or possible changes becomes. A long carrier strip that can be stored, for example, on rolls and from which individual carrier strips for the decorative parts can be separated can also be understood as an endless strip.

Correspondingly, a further development of the method provides that the light strip has a carrier strip which is separated in length at least according to a length of the line from an endless strip. The carrier tape can be equipped with the lighting means before or after the carrier tape has been separated from the endless tape.

Furthermore, the path or the luminous strip provided by means of the path can be optimized in order to connect the luminous dots with a minimum length and while maintaining maximum deformability of the luminous strip or the carrier strip. The gradient of the helical arrangement of the luminous strip around the axis can also change in sections.

The features disclosed above can be combined as desired, insofar as this is technically possible and they do not contradict one another.

Other advantageous developments of the invention are characterized in the dependent claims or are described below together with the description description of the preferred embodiment of the invention shown in more detail with reference to the figures. Show it:

1 shows a decorative part that can be illuminated;

2 shows a first variant of an illuminated decorative part known from the prior art;

3 shows a second variant of an illuminated decorative part known from the prior art;

4 shows a variant of an illuminable decorative part according to the invention;

5 shows a first side view of an illuminable decorative part;

6 shows a second side view of an illuminable decorative part;

7 shows a first section of a light band;

8 shows a second section of a light band.

The figures are schematic by way of example. The same reference numbers in the figures indicate the same functional and/or structural features.

1 shows a decorative part 1 that can be illuminated, as is fundamentally proposed by the invention, such a decorative part 1 also being able to be made optically identical to its visible side by a component that is already known in the prior art and deviates from the decorative part 1 according to the invention.

The shape of the decorative part 1 is determined by a molded part 10, which in the present case is sleeve-like or cup-like, so that the outward-facing visible surface 11 is also three-dimensional. Alternatively, the molded part 10 could also only run in one plane or essentially flat, so that the visible surface 11 would also be flat or two-dimensional. The molded part 10 forms the carrier surface 12 towards the back, which in the illustrated variant corresponds to the interior defined or spanned by the molded part 10 or faces the axis A running centrally through the interior.

In order to illuminate the decorative part 1 , a multiplicity of luminous points 13 are provided on the molded part 10 , at which the decorative part 1 should be able to be illuminated by the lighting means 22 .

In order to implement such lighting, the prior art provides, for example, for a large-area and rigid or flexible printed circuit board 20' to be provided on the carrier surface 12 of the molded part 10, as is shown in the case of the decorative part T that can be illuminated in Figure 2. It is provided that the printed circuit board 20' rests over the entire surface on the carrier surface 12 and is connected to it or to the molded part 10, with lighting means being provided on the printed circuit board 20' only at the light points 13 and the surrounding or remaining areas on the Printed circuit board 20' remain free and are thus "wasted". Accordingly, there is a high material requirement for this variant. In addition, the printed circuit board 20' must be adapted in the event of a change, for example in the carrier surface 12, by changing the shape of the molded part 10, so that separate printed circuit boards 20' must be produced, stored and installed for each variant.

Alternatively, a variant according to FIG. 3 is also known in the prior art, in which the points of light 13 are connected by a conductor track arrangement 20″ specially provided for this purpose. Although this saves a considerable amount of material compared to a variant with the printed circuit board 20', it is still necessary to essentially completely rework the conductor track arrangement 20" when changing the position of the light dots 13 or the carrier surface 12 in the area of the light dots 13, so that a conductor track arrangement 20" only for the individual specific variant of a decorative part 1”, as shown in FIG. 3, can be used.

Both the printed circuit board 20' in Figure 2 and the conductor track arrangement 20" in Figure 3 are preferably hidden behind the molded part 10 or in an interior space formed by the molded part 10 and on the visible side or on the visible surface 11 are not visible, so that they are shown in Figures 2 and 3 only to improve understanding.

As an alternative to these structures known in the prior art, a decorative part 1, as shown in FIGS. 4 to 6, or a method for its production is proposed, which at the same time achieves a compromise between universal applicability and material savings.

According to FIG. 1, the molded part 10 that determines the shape of the decorative part 1 is designed in the manner of a sleeve or cup and defines a hollow space or interior space. In order to provide the lighting function, a light strip 20 is arranged on the inside or the rear side of the molded part 10 facing the interior, which takes over the function of the printed circuit board 20' from FIG. 2 or the conductor track arrangement 20" from FIG. 3 in a flexible and advantageous manner .

For this purpose, the luminous strip 20 is coiled around the axis A on the rear side of the molded part 10, i.e. here in the interior space defined by the molded part 10, or arranged so as to wind around the axis A, with the luminous strip 20 in the variant according to Figures 4 to 6 in the Is arranged essentially spirally and rests against the support surface 12 over its entire length.

The luminous strip 20 has a large number of contact points 21, at each of which a luminous means 22 can be arranged, whereby luminous means 22 are arranged only at the contact points 21, which correspond to one of the luminous points 13 or to such a luminous point 13 adjoin.

If the shape of the molded part 10 or the decorative part 1 or the positions of the luminous points 13 change, the entire luminous strip 20 does not have to be adjusted. Depending on the respective change, the pitch of the windings, the arrangement of the lighting means 22 on the contact points 21 and/or whether the light strip 20 is in contact with the carrier surface 12 is changed, for example, without the main component of the light strip 20, the carrier strip 23 with the parts provided thereon being changed Having to change contact points 21 and the conductor tracks, as explained in the context of the description of the figures for FIGS.

A variant of the decorative part 1 is shown here, in which the sleeve or cup shape of the molded part 10 results in a substantially full-area and therefore advantageous contact of the light strip 20 on the carrier surface 12, but a decorative part with a molded part can also be provided , in which the molded part does not define a cavity or interior space. In this case, the luminous strip 20 is also wound or coiled around an axis on the back, with the luminous strip 20 only adjoining the molded part on the visible side and during production with the remaining sections initially “hanging in the air” or on a cover or another molded part is present.

In Figures 5 and 6, it is particularly easy to see in the side view that a large number of contact points 21 are provided along the longitudinal direction L of the light strip 20, with light sources 22, such as LEDs, only at a few contact points 21, which correspond to the light points 13 , are arranged. The lighting means 22 or LEDs extend through the luminous points 13 implemented as openings or openings from the carrier surface 12 to the visible surface 11 .

The light strip 20 can also, in particular with regard to its ends, Longitudinally L are adjusted to the molded part 10. In FIG. 5, a first end 24 of the luminous strip 20 is cut to correspond to an upper side O of the molded part 10, for example. Contact points 21 are "destroyed" in the process, but this is not disruptive, since no luminous points 13 or luminous means 22 are provided in this area anyway and the remaining luminous means 22 on the luminous strip 20 or the luminous strip 20 remain controllable.

In FIG. 6, the decorative part 1 is turned in such a way that a second end 25 of the light strip 20 is visible, which is arranged on an underside U of the molded part 10 . At the second end 25, a plug-in contact makes contact with the light strip 20 or with the conductor tracks of the light strip 20, so that a voltage supply and/or a control device can be connected to the light strip 20. The second end 25 of the luminous strip 20 can also extend out of the interior space defined by the molded part 10 or generally beyond the molded part 10 .

It is also particularly clearly visible in FIG. 6 that the gradient of the light band 20 about the axis A can fluctuate or change in sections in order to be able to arrange the light band 20 according to a path connecting the light spots 13 .

With regard to Figures 4 to 6, as in Figures 2 and 3, the light strip 20 shown on the visible surface 11 is shown visible only to improve understanding and is preferably hidden in the interior formed by the molded part 10 and on the visible side or on the visible surface 11 is not visible, so that an optical system according to FIG. 1 is achieved.

The light strip 20 is shown in FIGS. 7 and 8 as an essential part of the decorative part 1 according to the invention and the method for its production. It is preferably provided that the light strip 20 is formed from a flexible strip-shaped carrier strip 23 with conductor tracks arranged on or in it and not shown here, as well as the contact points 21, which are electrically contacted by the conductor tracks, so that a light source is arranged at each of the contact points 21 could. Such a light strip 20 can be used for a large number of trim parts, since it can be separated from an endless strip and then a light source 22 is only arranged on the contact points 21 corresponding to the light points 13 and connected via the contact point 21 or an interface provided thereon to the Carrier strip 23 is connected, whereby the lamps 22 connected to the carrier strip 23 become part of the light strip 20 .

FIG. 7 shows, for example, a section from an endless strip, from which a luminous strip 20 with a large number of contact points 21 is obtained by cutting at the separation points X, the contact points 21 being provided at regular intervals on the carrier strip 23.

If the configuration of the luminous strip 20 required for a specific decorative part 1 or for a specific variant of a decorative part 1 is known or determined, the luminous strip 20 can be connected to the lighting means after it has been separated from the endless strip or still as an endless strip at the specific contact points 21 22 are fitted, as shown in FIG.

The implementation of the invention is not limited to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown even in the case of fundamentally different designs.

* * * * *

Claims

Claims Illuminatable decorative part (1) with a molded part (10) which has a two- or three-dimensional visible surface (11) on one visible side and a carrier surface on a rear side facing away from the visible side

(12), the shaped part (10) having a multiplicity of luminous points (13) at which the shaped part (10) can be transilluminated from the carrier surface (12) to the visible surface (11) and which according to a predetermined pattern over the visible surface (11) are distributed, the decorative part (1) also having a flexible light strip (20) with a multiplicity of contact points (21) distributed along a longitudinal direction (L) of the light strip (20), wherein on at least some of the contact points (21 ) in each case one lamp (22) of a plurality of lamps (22) is arranged and electrically contacted according to a predetermined distribution and corresponding to the number of luminous points (13), the luminous strip (20) on the rear of the molded part (10) about an axis (A ) is coiled and arranged along a path connecting the luminous points (13) and each luminous point (13) is assigned an illuminant (22), so that at the luminous points

(13) in each case a light can be emitted from the lighting means (22) from the back through the molded part (10) to the visible side. Decorative part according to claim 1, wherein the luminous points (13) are each formed as an opening which runs through the molded part (10) from the carrier surface (12) to the visible surface (11) or wherein the molded part (10) has transparent or translucent sections, which form the luminous dots (13). Decorative part according to Claim 1 or 2, in which the light strip (20) bears against the carrier surface (12) at least in sections. Decorative part according to Claim 3, in which the luminous band (20) bears against the supporting surface (12) at least in a respective region of the supporting surface (12) directly adjoining the luminous points (13) and sections of the luminous band (20) which are each between two luminous points ( 13). Decorative part according to Claim 1 or 2, further comprising a carrier element which is arranged on the rear of the molded part (10), the luminous strip (20) being arranged at least in sections on the carrier element between the carrier element and the molded part (10). Decorative part according to the preceding claim, wherein the light strip (20) is fixed to the carrier element and wherein the carrier element and/or the light strip is/are fixed to the molded part. Decorative part according to one of the preceding claims, in which the light strip (20) is formed from a flexible, strip-shaped carrier strip (23) with conductor tracks arranged thereon or therein and the contact points (21), which make electrical contact with the conductor tracks and run along the longitudinal direction (L) of the Luminous band (20) are provided at regular intervals. Decorative part according to the preceding claim, wherein an electrical interface for electrically contacting the conductor tracks with the respective lamp (22) is provided at all contact points (21) or only at the contact points (21) at which a lamp (22) is provided . Decorative part according to the preceding claim, wherein the interfaces are each designed to enable electrical contacting of the respective lighting means (22) along an area extending in the longitudinal direction (L) of the lighting strip (20). Decorative part according to one of the preceding claims 6 to 8, wherein the luminous strip (20) has a multiplicity of additional contact points and components with which electrical contact is made at the additional contact points and which are attached to a surface of the carrier strip (23 ) or on a surface of the carrier strip (23) which faces away from the carrier surface (12) of the molded part (10) and faces the axis (A) and are contacted with the conductor tracks. Decorative part according to one of the preceding claims, wherein the lighting means are each designed to emit light along at least one predetermined lighting direction, the lighting means being divided into at least two groups and the lighting means of each group being designed to emit light along a lighting direction which differs from the lighting direction of the illuminants of the other groups differs. Method for producing an illuminated decorative part (1) with a molded part (10) which has a two- or three-dimensional visible surface (11) on one visible side and one facing away from the visible side back has a carrier surface (12), the molded part (10) having a multiplicity of luminous points (13) at which the molded part (13) can be transilluminated from the carrier surface (12) to the visible surface (11) and which according to a predetermined pattern are distributed over the viewing surface (11), a three-dimensional path winding around an axis (A) being determined, through which the luminous dots (13) arranged according to the predetermined pattern on the carrier surface (11) are connected in series with one another, wherein the three-dimensional path is converted to a two-dimensional line, along which, according to the predetermined pattern, lighting positions corresponding to the luminous points (13) are provided at distances determined by the pattern and the path, with a flexible luminous band (20) having a length at least corresponding to a length of the line is provided, which has a plurality of contact points (21) along its longitudinal direction (L). t, a lamp (22) being arranged at each of the contact points (21), which coincide along the longitudinal direction (L) with an illumination position corresponding to a luminous point (13), and being electrically contacted with the respective contact point (21), so that one light source (22) is assigned to each light point (13), the light strip (20) being arranged wound around the axis (A) on the back of the molded part (10) and one light source (22) at each light point (13) is arranged so that the light sources (22) can emit light from the carrier surface (12) through the molded part (10) to the visible surface (11).

13. The method according to the preceding claim, wherein a pitch of the path is constant within a tolerance range and the path winds helically or spirally around the axis (A). Method according to one of the preceding claims 12 or 13, wherein in determining the path a three-dimensional

Model of the carrier surface (12) with the light points (13) is created, which is converted to a two-dimensional surface, with a line connecting the light points (13) being determined on the two-dimensional surface, which line is determined when the two-dimensional surface is converted back into the three-dimensional support surface (12) forms the path. Method according to one of the preceding claims 12 to 14, wherein the light strip (20) has a carrier strip (23) with the plurality of contact points (21) at which the lighting means (22) can be contacted, the carrier strip (23) in length is separated from an endless belt at least according to a length of the line.

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