Illuminated or illuminable trim part of or for vehicle and vehicle comprising such trim part

By using four types of LED light sources and a covering unit structure in automotive decorative parts, the problem of high cost of reproducing amber and red colors is solved, and a lighting effect with low cost, high brightness and uniform color is achieved.

CN120773642APending Publication Date: 2025-10-14HELLA SATURNUS SLOVENIJA PROIZVODNJA SVETLOBNE OPREME ZA MOTORNA IN DRUGA VOZILA D O O
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Patent Information

Application Number
CN202511135677.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-08-27
Filing Date
2025-08-14
Publication Date
2025-10-14

AI Technical Summary

Technical Problem

Existing automotive RGB-LEDs are costly and difficult to reproduce amber and red colors, and their light output is insufficient, making manufacturing complex and expensive.

Method used

The light source design includes four types of light-emitting diodes: white, cyan, amber or green, red or blue. Combined with the covering unit and the diffusion layer, reflective layer and other structures, the desired lighting effect is achieved by mixing and correcting color deviation.

Benefits of technology

It reduces the cost of color reproduction, increases light output, meets legal requirements for automotive lighting, and provides high brightness and color uniformity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to an illuminated or illuminable trim part (221, 222, 223, 224, 225) of a vehicle (60) or for a vehicle (60), comprising a light source (101, 102, 103) for providing light; a cover unit (26) visible from the outside, permeable to light and causing a color shift of light that has passed through the cover unit (26), in which the light sources (101, 102, 103) comprise a white first light emitting diode (14), a cyan second light emitting diode (16), an amber or green third light emitting diode (18), and a red or blue fourth light emitting diode (20). Furthermore, the invention relates to a vehicle (60) comprising such a trim part (221, 222, 223, 224, 225).
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Description

TECHNICAL FIELD

[0001] The present invention relates to illuminated or illuminable trim parts of or for a vehicle. Furthermore, the present invention relates to a vehicle comprising such a trim part. BACKGROUND

[0002] Increasingly, modern vehicles are equipped with illuminated or illuminable trim parts. External trim parts such as bumpers or light panels often need to be illuminated in a specific color to meet legal requirements. One common trend in modern automotive light design is the "hidden until lit" light, where the light is emitted through a translucent cover unit. In this case, the material of the cover unit itself can be colored, the cover unit can be painted in a specific color (typically to match the color of the rest of the vehicle), can have a metallic appearance (by applying a metallic appearance foil, PVD or by other processes), or some other layer is applied to the cover unit to achieve a specific appearance. All of these layers can cause a significant color shift when the light is passing through the cover unit, which needs to be corrected. Due to the variation of materials used for the cover unit and the strict limitations by manufacturers on the color of the light allowed to be emitted, in many cases a light source with a fixed emission spectrum cannot achieve the required output color.

[0003] In most cases, the direction indicators need to be amber, the back lights, side markers, DRL (Daytime Running Light) and headlamps white, and the brake lights and rear side markers red.

[0004] It is expected that soon on vehicles a cyan "ADS (Autonomous Driving System) marker light" will be required to signal that the vehicle is operating in autonomous driving mode. Most commercial red-green-blue RGB-LEDs (Light Emitting Diodes) reproduce the sRGB color gamut (standard RGB color gamut) GS (see Figure 2 ), which does not include the red or amber areas defined by automotive regulations. RGB-LEDs used in displays intended for professional use, which require accurate color reproduction (e.g. professional photography), are designed to display a larger color gamut, such as AdobeRGB. Since amber and red are positioned at the very edge of the visible color space, even these specialized RGB sources often cannot reproduce these colors correctly. Therefore, RGB sources for automotive applications must be specifically designed to be able to reproduce the automotive amber and red colors to meet the legal requirements for moving vehicles, which leads to a relatively high effort and cost.

[0005] An example of the color gamut of an automotive grade RGB-LED GA is also shown in Figure 2Such RGB-LEDs can in principle reproduce all colors of the vehicle light functions. However, the color spectrum of mass-produced RGB-LEDs can vary significantly. Thus, when considering different color bins of the red, green and blue LEDs, the colors can no longer be within the color gamut of the RGB-LED. A color bin is an area or range in the color space defined by the LED manufacturer. After production, the LEDs are measured and sorted into areas (or bins), the customer can specify which bin they want, in particular how small the range should be in which the color space should be. Since RGB LED chips each contain three LEDs, it is extremely expensive to sort the chips so that each of the three LEDs falls into the desired bin.

[0006] If the color coordinates of the red LED of the automotive RGB-LEDs shift slightly towards blue, it is no longer possible to reproduce amber as required by law. This means that a bin of LEDs needs to be selected according to stricter requirements regarding spectral variation, which increases the cost of the LEDs.

[0007] Furthermore, the bins must also be very narrow in brightness since at least some of the desired colors are produced by mixing. The alternative is to carefully calibrate each light source to account for variations in color and brightness of each LED, which again increases the cost.

[0008] Current automotive RGB-LEDs are low power. This means that it is difficult to achieve the necessary light output required for most light functions by using RGB-LEDs alone.

[0009] Further information on the technical background to which the present invention relates can be found in WO 2021 / 067724 A1. SUMMARY

[0010] It is an object of one embodiment of the present invention to propose an illuminated or illuminable trim part of or for a vehicle by which the above-discussed disadvantages can be eliminated or at least reduced. More specifically, a trim part should be provided which can be manufactured at low cost but at the same time can be illuminated with light of the desired color and brightness. Furthermore, it is an object of embodiments of the present invention to provide a vehicle which can be equipped with such a trim part.

[0011] This object is solved by the features specified in claims 1 and 11. Advantageous embodiments are the subject of the dependent claims.

[0012] One embodiment of the present invention relates to an illuminated or illuminable trim part of or for a vehicle, comprising

[0013] - a light source for providing light,

[0014] - a cover unit,

[0015] o visible from the outside,

[0016] o transmissive for light and causing a color shift of the light that has passed through the cover unit, wherein

[0017] - the light source comprises

[0018] o a white first light emitting diode,

[0019] o a cyan second light emitting diode,

[0020] o an amber or green third light emitting diode, and

[0021] o a red or blue fourth light emitting diode.

[0022] One of the core features of the invention is that the light source comprises four color LEDs in total, which is already a difference to the RGB-LEDs that are commonly used in automotive applications, which comprise only three LEDs. Furthermore, the light source comprises a white LED, which means that white does not have to be mixed in all cases. When white light is generated by mixing, the resulting light is limited in brightness by the darkest LED of the original LEDs. When a white LED is used to generate most of the light and only the remainder of the LEDs is used to correct any color shift caused by the cover member, a higher luminous flux can be obtained.

[0023] Furthermore, the second LED is cyan. Cyan is located at the edge of the visible color space opposite to amber (see Figure 2 ), which makes it challenging to produce cyan and amber light with the same set of RGB LEDs.

[0024] Since white and cyan are generated by LEDs of the respective color, the colors of the two further color LEDs can be chosen according to the respective requirements of the color the trim part should be illuminated with. When the trim part should have standard functions like direction indicator and brake light, the third light emitting diode can be amber and the fourth light emitting diode can be red. However, it is also possible that the trim part or segments of the trim part are used for other purposes. An example can be a police car or emergency vehicle, where the trim part can be illuminated with flashing blue color. In this case, the fourth LED is blue, since blue is also located towards the edge of the visible color space.

[0025] If amber is not required, it can be replaced by a green LED, extending the color gamut to the yellow region. If red is not required, it can be replaced by a blue LED, extending the color gamut to the blue region. However, it can also be advantageous to replace the amber LED by a blue LED and the red LED by a green LED.

[0026] In case the light source consists only of cyan LEDs, amber LEDs and red LEDs, which is most likely the most common choice in automotive applications, the mixed white tends to have a color tint. Furthermore, the cover unit of the trim part usually imposes a non-negligible color shift on the outgoing light, imposing some color tint on the light emitted by the white LEDs as well. However, the use of white LEDs enables to correct a wider color range.

[0027] Automotive grade red, amber and white LEDs are available in many varieties and are mass produced, which usually leads to competitive prices. Once ADS-signaling becomes a legal requirement, it is expected that automotive cyan LEDs will follow a similar path. Since the colors used for automotive lighting are reproduced according to the invention without mixing, the light source is less sensitive to the LED color bins. Furthermore, the luminosity differences of the LED bins only affect the overall luminosity of the lamp, not the color.

[0028] As mentioned, the cover unit can be transparent to the light provided by the light source, i.e. be transparent or translucent. Even in case the cover unit is transparent, in almost all automotive applications the color of the light is shifted when the light propagates through the cover unit. This color shift can be caused when the cover unit comprises a translucent body, a body coated with a specific color, usually matching the color of the rest of the vehicle, a body with a metallic appearance (by applying a metallic appearance foil, PVD or by other processes) or in case other layers are applied to the cover unit to achieve a specific appearance.

[0029] In this regard, the term "visible from the outside" can be understood as a viewer looking at a vehicle equipped with such a trim part can see the cover unit of the trim part. The term "visible from the outside" thus mainly relates to the trim part when installed to a given vehicle. The color of the light emitted by the light source is chosen taking into account the color shift caused by the cover unit when passing through the cover unit. The color of the light leaving the cover unit is the desired or required color.

[0030] The trim part is mainly embodied as an exterior trim, however, an interior trim part can also be provided accordingly.

[0031] According to another embodiment, the cover unit comprises a colored member visible from the outside. The visible cover unit can be adapted to the rest of the vehicle such that it is hardly distinguishable from the vehicle. An effect of "light from nowhere" can be achieved.

[0032] In a further embodiment, the colored member comprises a first surface and a second surface, the first surface facing the light source, wherein a diffusion layer is applied to the first surface and / or the second surface. If thick enough, the diffusion layer is a rather simple means for mixing the light emitted by LEDs of different colors. Furthermore, the angular distribution of the light exiting the diffusion layer is broadened.

[0033] In another embodiment, an opaque layer is at least partially applied to the first surface or the diffusion layer. The opaque layer prevents light from entering the cover unit. As a result, the cover unit remains unlit where covered by the opaque layer. The opaque layer can be applied such that specific graphical elements, such as a trademark identification of a vehicle manufacturer, remain unlit or are illuminated.

[0034] In a further embodiment, the cover unit comprises a light transmissive body that is transmissive for light, and a coloring member is fastened to the cover unit. The coloring member can be applied to the light transmissive body to form a coloring layer. This embodiment can provide a high manufacturing flexibility, as the coloring layer can be chosen depending on the color of the remaining part of the vehicle. The remaining design of the trim part can remain unchanged in addition to the coloring layer.

[0035] According to another embodiment, the trim part comprises a reflective layer arranged adjacent to the light source. The reflective layer acts as a mixing chamber for mixing light emitted by LEDs of different colors. In case the trim part comprises two or more light sources, the reflective layer can be arranged between two adjacently arranged light sources to ensure a correct mixing within one light source. The manufacturing costs for providing the trim part with a reflective layer are relatively low.

[0036] In a further embodiment, the trim part comprises a light guide arranged between the light source and the cover unit. The light guide comprises a coupling area positioned adjacent to the light source, wherein light provided by the light source can be coupled into the light guide. Further, the light guide comprises an exit area where light can exit the light guide. The exit area is arranged such that the exiting light is directed to the cover unit. The use of a light guide has the distinct advantage that the light source can be arranged remote from the cover unit. The light source and the corresponding electronic members can be arranged in an area where they are better protected from external influences such as moisture and temperature and where there is sufficient and easy available installation space.

[0037] In another embodiment, the trim part comprises a mixing unit for mixing light emitted by a light emitting diode. The mixing unit ensures that the light generated by the light source has a uniform color.

[0038] In a further embodiment, the mixing unit comprises a mixing rod arranged between the light guide and the light source. The mixing rod is a simple member and improves the color uniformity of the light provided by the light source.

[0039] According to another embodiment, the mixing unit comprises at least one optical unit for focusing and / or mixing the light emitted by the light emitting diodes. The optical unit collects the light emitted from the light source, thereby increasing the brightness of the light, since the amount of light that does not reach the covering unit can be reduced. Furthermore, the optical unit can be provided with mixing properties to mix the light emitted by the light source. As an example, the optical unit can comprise a wavelength selective mirror that reflects, for example, cyan and is transparent for red. As a result, the red and the cyan are mixed, which can result in a turquoise light. The optical unit is evidently effective in directing the light to the desired surface, thereby obtaining a high brightness and a high luminous flux.

[0040] An additional aspect of the invention relates to a vehicle comprising a trim part according to one of the previously discussed embodiments. The technical effects and advantages discussed in relation to the method apply largely equally to the system. Automotive grade red, amber and white LEDs are available in many varieties and are mass produced, which generally results in competitive prices. Automotive cyan LEDs are expected to follow a similar path once ADS-signaling becomes a legal requirement. Since the reproduction of colors for automotive lighting according to the invention does not require mixing, the light source is less sensitive to the LED color bins. Furthermore, the brightness difference of the LED bins only affects the overall brightness of the light, and not the color. BRIEF DESCRIPTION OF DRAWINGS

[0041] The invention is described in detail with reference to the accompanying drawings, in which

[0042] Figure 1 is a CIE chromaticity diagram according to the primary color sub-division areas,

[0043] Figure 2 is a CIE chromaticity diagram showing the sRGB color gamut and the automotive grade RGB color gamut,

[0044] Figure 3A is a schematic diagram of a first embodiment of a light source that can be used in one of the trim parts according to the invention,

[0045] Figure 3B is a schematic diagram of a plurality of light sources as shown in Figure 3A

[0046] Figure 4 is a CIE chromaticity diagram showing the color gamut of the first embodiment of the light source,

[0047] Figure 5 is a CIE chromaticity diagram showing the color gamut of the second embodiment of the light source,

[0048] Figure 6 is a CIE chromaticity diagram showing the color gamut of the third embodiment of the light source,

[0049] Figure 7 ​is a principle cross-sectional view through a first embodiment of an illuminated or illuminable trim part,

[0050] Figure 8 is a principle cross-sectional view through a second embodiment of an illuminated or illuminable trim part,

[0051] Figure 9 is a principle cross-sectional view through a third embodiment of an illuminated or illuminable trim part,

[0052] Figure 10 is a principle cross-sectional view through a fourth embodiment of an illuminated or illuminable trim part,

[0053] Figure 11 is a principle cross-sectional view through a fifth embodiment of an illuminated or illuminable trim part,

[0054] Figure 12 is a principle view of a first embodiment of an optical unit in one embodiment of an illuminated or illuminable trim part,

[0055] Figure 13 is a principle view of a first embodiment of an optical unit in one embodiment of an illuminated or illuminable trim part, and

[0056] Figure 14 is a principle top view on a vehicle equipped with a trim part according to one of the embodiments shown in the other figures. DETAILED DESCRIPTION

[0057] Figure 1 is a CIE color diagram according to the main color sub-areas, and is shown for introductory purposes. The areas representing the main colors are labeled. G designates the green area, B designates the blue area, P designates the purple area, PK designates the pink area, R designates the red area, O designates the orange area, Y designates the yellow area, and W designates the white area. The other areas bound areas of intermediate colors. For example, the colors between the blue area B and the green area G gradually change from blue to green.

[0058] Figure 2 shows a schematic view of a vehicle with a trim part according to one of the embodiments shown in the other figures. Figure 2The CIE chromaticity diagram in Fig. 1 is the same as in Fig. 1 1, but gives the sRGB color gamut GS (standard RGB) and the automotive RGB color gamut GA. In addition, the indication of the amber region A, the red region R, the cyan region C and the white region W comply with the respective legal requirements for automotive applications. Most commercially available RGB LEDs reproduce the sRGB color gamut GS, which does not include the red or amber regions defined by automotive regulations. Since the automotive amber and red colors are located at the edge of the visible color space, even automotive-grade RGB LEDs often fail to reproduce these colors correctly (see color gamut GA). Therefore, RGB light sources 101 for automotive applications must be specifically designed to be able to reproduce the automotive amber and red colors, which will result in a comparatively high cost.

[0059] Figure 3A is a schematic diagram of a first embodiment of a light source 101 that can be used in one of the decorative parts according to the present application. The light source 101 comprises a white first light emitting diode 14, a cyan second light emitting diode 16, an amber third light emitting diode 18 and a red fourth light emitting diode 20.

[0060] Figure 3B is a schematic diagram of a plurality of light sources 101 arranged in an array according to the first embodiment of the light source 101 of Figure 3A is sufficient small that they represent one pixel, so that certain images can be displayed.

[0061] Figure 4 is a CIE chromaticity diagram showing the color gamut of the first embodiment of the light source 101 shown in Figure 3A Figure 4

[0062] Figure 5 is a CIE chromaticity diagram showing the color gamut of a second embodiment of the light source 102, wherein the fourth light emitting diode 20 is not red but blue. The second embodiment of the light source 102 can be of interest in applications where no red color is required but a blue color is required. When compared to the first embodiment of the light source 101, the second embodiment of the light source 102 has the advantage that the blue color is located in the middle of the visible color space, so that the color gamut is larger than the color gamut of the first embodiment of the light source 101. Figure 4 ​​The color gamut of the light source 102 of the second embodiment can be seen to be significantly larger and extending into the blue region when compared to the color gamut of the light source 101 of the first embodiment given in Fig. 1.

[0063] Figure 6 is a CIE chromaticity diagram showing the color gamut of a third embodiment of a light source 103, wherein the third light emitting diode 18 is not amber but green. This embodiment of the light source 103 can be of interest in applications where amber is not required. When compared to the color gamut of the light source 101 of the first embodiment given in Fig. 1, the color gamut of the light source 103 of the third embodiment can be seen to be significantly larger and extending into the green region. Figure 4

[0064] Figure 7 is a principle cross-sectional view of a first embodiment of an illuminated or illuminable trim part 221 according to the present application. The trim part 221 comprises, for example, a cover unit 26 according to the first example shown in Fig. 2. The cover unit 26 comprises a colored member 28 (see Fig. 3) which is visible from the outside when mounted to a vehicle. The colored member 28 is illuminated by the four light sources 101 of the first example shown in Fig. 2. Figure 3A

[0065] The trim part 221 comprises a cover unit 26 having a colored member 28 (see Fig. 3) which is visible from the outside when mounted to a vehicle. Figure 14 ) The colored member 28 has a first surface 30 and a second surface 32, the first surface 30 facing the light sources 101. A diffusion layer 34 is applied to the first surface 30 or to the second surface 32 (the latter option not shown). The diffusion layer 34 widens the angular distribution of the light emitted by the four colored LEDs 14, 16, 18, 20 before entering the colored member 28, so that the illumination of the colored member 28 is visible from a wider viewing angle. The colored member 28 causes a color shift of the light propagating therethrough. The color shift occurring is generally known a priori and can be taken into account in the colors of the light sources 101 so that the light leaving the trim part 221 is considered to be the desired color by a viewer outside the trim part 221.

[0066] Figure 8 ​​A second embodiment of the decorative component 222 is shown. In this embodiment, the cover unit 26 comprises a transparent or light-transmissive body 36 that is also transmissive for the light emitted by the light sources 101. It should be noted, however, that the light that penetrates the light-transmissive body 36 also experiences a color shift, albeit typically to a small extent. An opaque layer 38 is applied to the light-transmissive body 36, partially, leaving a gap 40 through which light can propagate. Also in the second embodiment, the cover unit 26 comprises a diffusion layer 34 that is applied to the light-transmissive body 36, however, on the surface facing away from the light sources 101. The coloring member 28 is embodied as a coloring layer and is applied to the diffusion layer 34. The light provided by the light sources 101 can only enter the light-transmissive body 36 within the gap 40, resulting in a certain pattern. The pattern can be a graphical element, such as a brand logo of a vehicle manufacturer or a symbol that can convey information to other road users.

[0067] Furthermore, a reflective layer 42 is arranged between two adjacent light sources 101, the reflective layer 42 extending between the carrier member 24 and the light-transmissive body 36. Light emitted by one of the light sources 101 is reflected upon impinging on the reflective layer 42, thereby remaining within a certain corridor. The random nature of the reflection from the reflective layer 42 mixes the differently colored light emitted by the four LEDs before entering the light-transmissive body 36.

[0068] In Figure 9 a third embodiment of the decorative component 223 is shown. As in the first embodiment of the decorative component 221, the third embodiment of the decorative component 223 comprises the coloring member 28. In the third embodiment, the diffusion layer 34 is applied to the second surface 32 of the coloring member 28. In addition thereto, the decorative component 221 comprises a light guide 44 and a mixing unit 46 embodied as a mixing rod 48. It is noted that the light guide 44 can be used with any configuration of the cover unit 26. The mixing rod 48 is positioned between the light sources 101 and the light guide 44. Thus, the light emitted by the light sources 101 is first mixed before being introduced into the light guide 44. Within the light guide 44, the light is guided towards the diffusion layer 34. The light guide 44 is equipped with a plurality of exit regions 50, wherein light can exit the light guide 44. The exit regions 50 can be designed such that light can only exit the light guide 44 at specific locations, as shown in Figure 9 Alternatively or cumulatively, the exit regions 50 can be continuous, such that light enters the coloring member 28 via a continuous and larger area of the first surface 30.

[0069] In Figure 10In a fourth embodiment, a decorative part 224 is shown. The decorative part 224 according to the fourth embodiment is largely similar to the decorative part 223 of the third embodiment, however, the decorative part 224 comprises a light-transmissive body 36 on which a diffusion layer 34 is applied. Furthermore, a coloring member 28 embodied as a coloring layer is applied to the diffusion layer 34. Between the light-transmissive body 36 and the diffusion layer 34, an opaque layer 38 is provided, whereby a gap 40 is obtained.

[0070] Figure 11 A fifth embodiment of a decorative part 225 is shown, which is largely similar to the decorative part 224 of the fourth embodiment. The opaque layer 38 is partly applied to the light-transmissive body 36 forming the already mentioned gap 40. The coloring member 28 embodied as a coloring layer is directly applied to the light-transmissive body 36.

[0071] It should be noted that, in particular, the arrangement of the diffusion layer 34 and the opaque layer 38 on the light-transmissive body 36 and the coloring member 28 can be freely chosen, such that combinations other than the ones shown in the figures can be obtained without departing from the scope of the invention. Figures 7 to 11

[0072] Figure 12 A first embodiment of an optical unit 521 is shown, which can for example be incorporated in the first embodiment of the decorative part 221 of the invention. By means of a first condenser lens 541, light emitted by a first LED 14 is focused on a diffusion layer 34, which is applied to for example a coloring member 28 (not shown in the figure). Similarly, light emitted by a second LED 16 is focused on the diffusion layer 34 by means of a second condenser lens 542. Thereby, a kind of focal point is obtained on the diffusion layer 34. The white light of the first LED 14 and the cyan light of the second LED 16 are mixed on the diffusing surface, and the mixed light is delivered uniformly. Figure 12

[0073] Figure 13 ​​A second embodiment of the optical unit 522 is shown, which can be incorporated into one embodiment of the decorative part 221-225 of the application. In this case, a first collimating lens 561 is used to collimate and direct the light emitted by the fourth LED 20 towards the wavelength-specific mirror 58. The third LED 18 is arranged perpendicular to the fourth LED 20. The light emitted by the fourth LED 20 is collimated by a second collimating lens 562 and directed towards the wavelength-specific mirror 58. The wavelength-specific mirror 58 is at an angle of 45° to the optical axis defined by the first collimating lens 561 and the second collimating lens 562. The wavelength-specific mirror 58 is transmissive to the red light emitted by the fourth LED 20, but reflective to the amber light emitted by the third LED 18. Due to the angular arrangement of the wavelength-specific mirror 58, the amber light emitted by the third LED 18 after reflection travels in the same direction as the red light emitted by the fourth LED 20. Thus, the red and amber light are mixed.

[0074] Figure 14 A schematic top view of a vehicle 60 equipped with a front decorative part 22F and a rear decorative part 22R according to one of the previously proposed embodiments is shown. The front decorative part 22F is embodied as a front bumper, while the rear decorative part 22R is embodied as a rear display panel. Examples in which the vehicle 60 is equipped with a decorative part 22 embodied as a B-pillar, a door panel, etc. are not shown.

[0075] List of reference signs

[0076] 101-103 light sources

[0077] 14 first light emitting diode

[0078] 16 second light emitting diode

[0079] 18 third light emitting diode

[0080] 20 fourth light emitting diode

[0081] 221-225 decorative part

[0082] 22F front decorative part

[0083] 22R rear decorative part

[0084] 24 carrier member

[0085] 26 covering unit

[0086] 28 tinted member

[0087] 30 first surface

[0088] 32 second surface

[0089] 34 diffusion layer

[0090] 36 light-transmissive body

[0091] 38 non-transparent layer

[0092] 40 gap

[0093] 42 reflective layer

[0094] 44 light guide

[0095] 46 mixing unit

[0096] 48 mixing rod

[0097] 50 exit area

[0098] 521, 522 optical unit

[0099] 541, 542 condenser lens

[0100] 561, 562 collimator lens

[0101] 58 wavelength-specific mirror

[0102] 60 vehicle

[0103] L14 position of first light-emitting diode

[0104] L16 position of second light-emitting diode

[0105] L18 position of third light-emitting diode

[0106] L20 position of fourth light-emitting diode

[0107] A amber region

[0108] C cyan region

[0109] G green region

[0110] O orange region

[0111] P purple region

[0112] Pk pink region

[0113] R red region

[0114] W white region

[0115] Y yellow region

[0116] GA gamut automotive RGB

[0117] GS gamut standard RGB

Claims

1. An illuminated or illuminable decorative part (221, 222, 223, 224, 225) of or for a vehicle (60), comprising - a light source (101, 102, 103) for providing light, - a covering unit (26) which ○ Visible from the outside, o capable of transmitting light and causing a color shift of the light having passed through the cover unit (26), wherein - the light source (101, 102, 103) comprises ○ a white first light emitting diode (14), ○ Cyan second light emitting diode (16), o an amber or green third LED (18), and ○ A fourth red or blue light emitting diode (20).

2. The illuminated or illuminable decorative element (221, 222, 223, 224, 225) according to claim 1, It is characterized in that The covering unit (26) includes a coloring member (28) visible from the outside.

3. The illuminated or illuminable decorative element (221, 222, 223, 224, 225) according to claim 2, It is characterized in that The coloring member (28) comprises a first surface (30) and a second surface (32), the first surface (30) facing the light source (101, 102, 103), wherein a diffusion layer (34) is applied to the first surface (30) and / or the second surface (32).

4. Illuminating or illuminable decorative element (221, 222, 223, 224, 225) according to one of the preceding claims or claim 3, It is characterized in that An opaque layer (38) is at least partially applied to the first surface (30) or the diffuser layer (34).

5. The illuminated or illuminable decorative element (221, 222, 223, 224, 225) according to claim 2, It is characterized in that The cover unit (26) includes a light-transmitting body (36) capable of transmitting light, and the coloring member (28) is fastened to the cover unit (26).

6. Illuminated or illuminable decorative element (221, 222, 223, 224, 225) according to any one of the preceding claims, It is characterized in that The decorative component (221, 222, 223, 224, 225) includes a reflective layer (42) arranged adjacent to the light source (101, 102, 103).

7. An illuminated or illuminable decorative element (221, 222, 223, 224, 225) according to any one of the preceding claims, It is characterized in that The decorative component (221, 222, 223, 224, 225) includes a light guide (44) arranged between the light source (101, 102, 103) and the cover unit (26).

8. An illuminated or illuminable decorative element (221, 222, 223, 224, 225) according to any one of the preceding claims, It is characterized in that The decorative component (221, 222, 223, 224, 225) includes a mixing unit (46) for mixing the light emitted by the light emitting diodes (14, 16, 18, 20).

9. An illuminated or illuminable decorative element (221, 222, 223, 224, 225) according to any one of claims 7 or 8, It is characterized in that The mixing unit (46) comprises a mixing rod (48) arranged between the light guide (44) and the light sources (101, 102, 103).

10. An illuminated or illuminable decorative element (221, 222, 223, 224, 225) according to any one of claims 8 or 9, It is characterized in that The mixing unit (46) comprises at least one optical unit (541, 542) for focusing and / or mixing the light emitted by the light emitting diodes (14, 16, 18, 20).

11. Vehicle (60) comprising a trim component (221, 222, 223, 224, 225) according to one of the preceding claims.

Citation Information

Patent Citations

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