DE102019118527A1 - Lighting device for vehicles - Google Patents

Abstract

The invention relates to a lighting device for vehicles with a number of light sources (8) and with a light guide (5, 5 ', 25, 25', 25 ", 26, 27) associated with the light source (8) and containing decoupling means (9) for deflection a light (10) coupled into the light guide (5, 5 ', 25, 25', 25 ", 26, 27) in the direction of one of the light guides (5, 5 ', 25, 25', 25" in the direction of extent (E)) , 26, 27) extending light outcoupling jacket segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27), characterized in that the light guide (5, 5 ', 25, 25', 25 ", 26, 27) is linear and is mounted in an elongated light guide receptacle (16) of a trim part (18) and / or a body part (6, 13) of the vehicle (3) so that a light coupling fed by the light source (8) on at least one end face (7) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) is arranged that the light source (8) is designed as an LED or laser light source is that the decoupling means of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) are designed as scattering elements (9) that are inside the light guide (5, 5 ', 25, 25', 25" , 26, 27) are distributed so that the coupled-in light (10) is deflected in the direction of the light-decoupling cladding segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27).

Description

The invention relates to a lighting device for vehicles with a number of light sources and with a light guide assigned to the light source and containing decoupling means for deflecting a light coupled into the light guide in the direction of a light outcoupling cladding segment of the light guide running in the direction of extension of the light guide.

From the DE 10 2016 202 752 A1 a lighting device for motor vehicles is known which, as an ambient lighting device, illuminates a floor area arranged to the side of the vehicle and which is switched on or off when the vehicle is opened and / or closed. This lighting device has a projection module with a light source and microlenses, so that, for example, a pictogram can be projected onto the floor.

From the DE 10 2009 041 976 A1 a lighting device for vehicles is known, which is used for ambient lighting. This has a light source on the one hand and a light guide on the other, which are arranged on an underside of a side protection strip. As a result, a flat area on the floor to the side of the vehicle can be illuminated. The disadvantage of the known lighting device is that the light guide is only located in a front end of the side protective strip, so that the light coupling-out area is relatively small. The luminosity must therefore be relatively high in order to be able to illuminate a large area of the floor. Due to the concentrated arrangement of the ambient lighting device, the thermal load is relatively large.

From the DE 10 2018 119 874 A1 a lighting device for vehicles is known, which is arranged as a reading light device inside a vehicle interior on an edge of a sliding roof or panorama window. It has a light source and lenses, a reflective film being applied to the window pane of the sliding roof or panorama window, by means of which the light is deflected into the vehicle interior. The disadvantage of the known lighting device is that a multiplicity of light sources is necessary in order to provide a reading light function.

The object of the present invention is to develop a lighting device for vehicles in such a way that, in a space-saving manner, a homogeneous illumination of an area arranged inside or adjacent to the vehicle outside the same is homogeneously illuminated.

To solve this problem, the invention in connection with the preamble of claim 1 is characterized in that the light guide is linear and is mounted in an elongated light guide receptacle of a trim part and / or a body part of the vehicle, that a light coupling fed by the light source is at least one end of the light guide is arranged so that the light source is designed as an LED or laser light source, that the decoupling means of the light guide are designed as scattering elements that are distributed within the light guide so that the coupled light is in the direction of the light outcoupling cladding segment of the light guide is diverted.

According to the invention, a linear and / or elongated light guide is provided for illuminating an illuminated area which is located outside the vehicle directly next to it and / or which is located inside the vehicle. The light guide is arranged in an elongated light guide receptacle which is part of a trim part (inside the vehicle) or a body part (outside the vehicle). The light guide serves on the one hand as a light distribution medium starting from a light coupling point and on the other hand as a light outcoupling medium for homogeneous illumination of the illuminated area. Due to the linear configuration of the light guide, the light coupled into the light guide at a light coupling can be brought to several light output locations at the same time. In the longitudinal extension of the light guide, sections of the same size or sections of the same length and width emit the same luminous flux, so that a homogeneous light emission takes place along the light guide. The light guide has scattering elements which are oriented or distributed in such a way that the same luminous flux is coupled out over the longitudinal extension of the light guide in sections of the same size or length via light outcoupling cladding segments of the sections in the direction of extension of the light guide. Because the light guide is linear, it can be fastened in a space-saving manner within a trim part or a body part, in particular on the edge of the body part.

According to a preferred embodiment of the invention, the scattering elements are arranged within the light guide in such a way that the light is extracted along the light-outcoupling cladding segment of the light guide at a radial scattering angle range of 60 ° to 80 ° and an axial scattering angle range of 80 ° to 100 °. Like the light guide, the light outcoupling jacket segment is elongated and runs parallel to an axis of the light guide. In the cross section of the light guide, the cladding segment encloses an acute angle. Because of the low The transverse extent of the light guide or the relatively smaller transverse extent of the cladding segment, the light guide forms a series of any number of point light sources.

According to a further development of the invention, the light guide has a transverse extension in a range from 2 mm to 5 mm. The light guide can thus advantageously be arranged in the trim part or body part if the overall depth is small.

According to a further development of the invention, the body part is designed as a side sill and / or bumper, the light guide being arranged flush in the light receptacle with an edge wall of the body part. The light guide or the lighting device is advantageously part of the body part. The light guide preferably extends along an edge or along an edge contouring of the body part, so that the effort for adapting the body part to accommodate the light guide is limited.

According to a further development of the invention, the light guide receptacle of the body part has support bars which are arranged at a distance from one another and which each cover the jacket segment which is coupled out of light. In this way, the light guide is partially surrounded by the light guide receptacle. As a result, the body part advantageously has increased rigidity or stability.

According to a further development of the invention, the light guide does not have any scattering elements in a first section thereof facing the light coupling, so that this section is used exclusively for coupling the light and for forwarding the coupled light by total reflection on the jacket surface. In a second section of the light guide following the first section, scattering elements are contained so that in addition to the light transmission functionality, the light is coupled out at the cladding segment of the second section. As a result, the light source can advantageously be arranged remotely from the light coupling. The first section thus serves as a light feed section to the second section designed as a light coupling-out section. In this way, the lighting effectiveness can advantageously be increased, since the light is only coupled out at those points which are optimally arranged in terms of location in relation to the illuminated surface.

According to a further development of the invention, the cladding part is designed as a headliner and / or a ceiling cladding and / or as an edge of a sliding roof or panorama window and / or as a roof edge. Due to the small transverse extension of the light guide, it can be arranged at any point on the cladding inside the vehicle interior. A reading light function and / or ambient lighting and / or control element lighting can thereby advantageously take place.

According to a further development of the invention, the light guide is arranged in the form of a polygon in the cladding part, wherein the polygon can be designed to be closed or open. A linear or rectangular area can thus advantageously be illuminated by means of a single light guide.

According to a further development of the invention, several light guides can be arranged in a polygonal manner or parallel to one another. In this case, the lighting device advantageously forms a flat reading lamp, the flat design of which cannot be seen by the vehicle occupant because the relatively thin light guides are arranged at a distance from one another.

The fact that several light guides are arranged next to one another means that the illuminated surface comes from different directions, which significantly reduces the formation of shadows.

According to a further development of the invention, the light guide has color change elements for converting the light from a first light color to a second light color. The light can thus be coupled out in a desired light color.

According to a further development of the invention, the light guide has reflection means on a side opposite the elongated light-decoupling cladding segment, so that there is an additional or alternative possibility of directing the coupled light in the direction of the light-decoupling cladding segment.

Further advantages of the invention emerge from the further subclaims.

Exemplary embodiments of the invention are explained in more detail below with reference to the drawings.

• 1 eine perspektivische Darstellung einer Beleuchtungsvorrichtung mit einem Lichtleiter, der an einem Karosserieteil befestigt ist zur Umfeldbeleuchtung,
• 2 einen Querschnitt durch den Lichtleiter der Beleuchtungsvorrichtung,
• 3 eine perspektivische Teildarstellung eines in einen Seitenschweller integrierten Lichtleiters, der zum Teil von Seitenschwellabschnitten abgedeckt ist,
• 4 eine schematische Vorderansicht eines Fahrzeuginnenraumes mit einer in einem Dachhimmel integrierten Beleuchtungsvorrichtung zur Ausleuchtung einer Lesefläche, wobei sich ein Lichtleiter der Beleuchtungsvorrichtung rechteckförmig erstreckt,
• 5 eine Vorderansicht des Fahrzeuginnenraums, wobei am Dachhimmel eine Mehrzahl von polygonartig aufeinanderfolgenden Lichtleiter angeordnet sind,
• 6 eine Vorderansicht des Fahrgastinnenraumes mit parallel zueinander angeordneten Lichtleitern zur Erzeugung einer flächigen Leseleuchte,
• 7 eine Vorderansicht eines Fahrgastinnenraumes, bei dem sich der Lichtleiter entlang einer Dachkante erstreckt und
• 8 eine Vorderansicht eines Fahrgastinnenraumes, bei dem sich der Lichtleiter oberhalb von Bedienelementen zur Beleuchtung derselben erstreckt.

Show it:

• 1 a perspective view of a lighting device with a light guide that is attached to a body part for ambient lighting,
• 2 a cross section through the light guide of the lighting device,
• 3 a perspective partial representation of a light guide integrated in a side sill, which is partly covered by side sill sections,
• 4th a schematic front view of a vehicle interior with a lighting device integrated in a headliner for illuminating a reading area, wherein a light guide of the lighting device extends in a rectangular manner,
• 5 a front view of the vehicle interior, wherein a plurality of polygonally successive light guides are arranged on the headliner,
• 6th a front view of the passenger compartment with light guides arranged parallel to one another to generate a flat reading light,
• 7th a front view of a passenger compartment in which the light guide extends along a roof edge and
• 8th a front view of a passenger compartment, in which the light guide extends above operating elements for illuminating the same.

A lighting device according to the invention for vehicles can, on the one hand, be used as an ambient lighting device for generating illuminated areas 1 serve that on a floor 2 next to a vehicle 3 is arranged. The ambient lighting device can, for example, when locking and unlocking a vehicle door 4th of the vehicle 3 switched on for a specified period of time. For this purpose is an elongated light guide 5 on a lower edge as a side skirt 6th trained body part arranged. On a first and / or second end face 7th of the light guide 5 is a light source for coupling in light 8th arranged. The light guide 5 has, as decoupling means, a plurality of distributed within the light guide 5 arranged scattering optical elements 9 on where in the light guide 5 coupled light 10 is deflected in the direction of a light-decoupling cladding segment 11 of the light guide 5 . The jacket segment 11 is - like the light guide 5 - elongated and linear. The light-decoupling cladding segment 11 runs parallel to a longitudinal axis A. of the light guide 5 .

In the present exemplary embodiment of the invention, the light guide is 5 cylindrical and has a transverse extension or a diameter d in the range from 2 mm to 8 mm. Alternatively, the transverse extent or the diameter d of the light guide 5 also be smaller than 2 mm if, for example, the light exit area should be minimal. The light-decoupling cladding segment 11 takes in the circumferential direction of the light guide 5 an acute angle range. The jacket segment 11 has a width B in the range from 0.5 mm to 3 mm, depending on the transverse extension of the light guide 5 .

Like in particular from 2 can be seen are the scattering elements 9 so distributed in the light guide 5 arranged that the coupled light 10 in the direction of the light-decoupling cladding segment 11 is deflected so that it acts as a decoupling light 12 under a radial scattering angle range α from 60 ° to 80 ° to the illuminated surface 1 is emitted. The radial scattering angle α extends in a radial plane of the light guide 5 that are perpendicular to the longitudinal axis A. runs.

The scattering elements 9 are so inside the light guide 5 arranged that the decoupling light 12 under an axial scattering angle range β is decoupled from 80 ° to 100 °. The axial scattering angle β extends in a plane in which the longitudinal axis A. of the light guide 5 runs. The axial scattering angle β thus tensions with the longitudinal axis A. of the light guide 5 a common level.

The illuminated area 1 serves to illuminate the vehicle's surroundings in the area of the vehicle door 4th if, for example, the vehicle door 4th is unlocked or locked.

Alternatively or additionally, it can be in a corner area of the vehicle 3 a light guide 5 ' be arranged, the one illuminated area 1' in the floor adjacent to the corner area of the vehicle 2 illuminated. The lighting device arranged in the corner area serves to generate a shunting light. In contrast to the linear and straight light guide 5 is the light guide 5 ' angular or arcuate and on the underside of a bumper 13 of the vehicle 3 arranged.

The light guides 5 , 5 ' enable homogeneous light emission for homogeneous illumination of the illuminated areas 1 , 1' . The light guides 5 , 5 ' have the same transverse extent over the entire length. The light guides 5 , 5 ' point in the direction of extent E. the same sections of the same size or length, their jacket segments 11 decouple the same luminous flux. This is how the illuminated area becomes 1 , 1 'homogeneously illuminated.

Preferably the light guides are 5 , 5 ' flush in a channel-shaped light guide receptacle of the body part or the side sill 6th or the bumper 13 arranged. On the light guide 5 , 5 ' an edge wall closes flush 15th of the side skirts 6th or bumper 13 at. Instead of flush, the light guide 5 , 5 ' also deepened to the edge wall 15th of the side skirts 6th or bumper 13 be arranged. For example, the Light guide 5 , 5 ' be fastened in a clasping holder of the light guide receptacle, for example by a clip or snap connection, which is preferably detachable.

According to an alternative embodiment of the invention 3 can be a channel-shaped light guide holder 16 be provided in the direction of extent E. the same spaced apart support bars 17th which cover the light-decoupling cladding segment. In the area of the support bars 17th is thus a section of the light guide 5 , 5 ' fully from the light guide mount of the side sill 6th or bumper 13 surround. Decoupling light 12 can therefore only from adjacent non-covered sections 14th of the light guide 5 , 5 ' be emitted.

Alternatively or additionally, the light guide 5 , 5 ' and / or the light guide holder 16 of the aforementioned embodiments, a light disc can be placed in front of the light guide 5 , 5 ' protects against damage and / or contamination.

According to a further embodiment of the invention 4th The lighting device can be used within a vehicle interior as a headliner 18th trained trim part be integrated. The lighting device serves here as a reading light for illuminating a reading surface 19th . The lighting device has a closed single light guide 25th on, which is in a corresponding light guide mount of the headliner 18th is edged. The light guide preferably runs 25th flush with the same adjacent cladding surfaces 20th of the headliner 18th . Alternatively, the light guide 25th also deepened to the neighboring cladding surfaces 20th of the headliner 18th run away. The light guide 25th assigned light source 8th can for example at a free end of one with the light guide 25th connected feed finger be arranged, the feed finger, not shown, preferably in the corner area of the light guide 25th is arranged so that the coupled light of the feed finger in its extension in a straight section of the light guide 25th can be forwarded. In the present embodiment, the light guide is 25th rectangular shape so that the reading area 19th a flat part of a seat 21st of the vehicle 3 illuminates. The light guide 25th agrees in its dimensions and functionality with the aforementioned light guides 5 , 5 ' match.

The light guide 25th is thus polygonal and closed. Alternatively, it can also be arranged in a square, triangular, oval or the like manner. In this embodiment of the invention, a single light guide enables 25th the illumination of a single reading area 19th .

According to a further embodiment of the invention 5 can use the lighting device to illuminate the reading area 19th several straight light guides 25 ' have, in which the end faces of the light guide 25 ' at a specified distance from the end faces of adjoining light guides 25 ' are arranged. On at least one end of the respective light guide 25 ' a light source, not shown, is arranged, by means of which the light in the respective light guide 25 ' is coupled. The light guides 25 ' can alternatively also be arranged one after the other in such a way that a light guide arrangement in an elliptical or circular shape or rectangular shape or another polygonal shape results.

According to a further embodiment of the invention 6th is the reading light by a plurality of parallel light guides 25 " formed, on the at least one end face of which a light source, not shown, is arranged. As in the previous exemplary embodiments, this creates a flat reading surface 19th illuminated, with the flat design of the reading lamp for the vehicle occupant not recognizable because the relatively narrow light guide 25 " are spaced apart from each other.

By having multiple light guides 25 ' , 25 " or several sections of the light guide 25th over the area of the paneling or roof lining 18th are distributed, shadows can be prevented despite linear light emission. Out 6th it can be seen that a distance a from outer light guides 25 " to each other is greater than half a width b of the vehicle seat 21st .

According to an alternative embodiment of the invention 7th can use the lighting device to illuminate the reading area 19th also in the area of a roof edge 22nd be arranged. A light guide is required for this 26th the contour of the roof edge 22nd arranged following on the same.

According to a further embodiment of the invention 8th is at least one light guide 27 so in the headliner 18th arranged integrated that the decoupling light 12 Controls 28 on a center console 29 of the vehicle interior illuminated.

The lighting device can thus be used as reading light and / or as incident light on a reading surface 19th or control elements illuminated field are aligned and limited. It is advantageous due to the small transverse extension of the light guide 5 , 5 ' , 25th , 25 ' , 25 " , 26th , 27 easy integration into a slot in the paneling (roof lining) or other add-on parts. The light guide is in the unlit state 5 , 5 ' , 25th , 25 ' , 25 " , 26th , 27 almost invisible to a viewer.

By dimming the light source 5 , 5 ' the illuminance of the lighting device can be adjusted.

Alternatively or additionally, the light guide has 5 , 5 ' or. 25th , 25 ' , 25 " , 26th , 27 at least in the area of the jacket segment 11 Color change elements 30th by means of which the coupled light 10 is converted from a first wavelength to a second wavelength. When the light source 8th For example, a laser light source that emits light of blue light color can through the color change elements 30th a conversion of the light color into white light, for example. The color change elements are preferred 30th as a coating on the light guide 5 , 5 ' or. 25th , 25 ' , 25 " , 26th , 27 upset.

Alternatively or additionally, the light guide 5 , 5 ' or. 25th , 25 ' , 25 " , 26th , 27 on one of the jacket segment 11 opposite side reflective means 31 have so that the coupled light 10 in the direction of the jacket segment 11 is diverted. This can reduce the number of in the light guide 5 , 5 ' or. 25th , 25 ' , 25 " , 26th , 27 integrated scattering elements are reduced so that the same luminous flux on the cladding segments 11 is decoupled.

The light guide is preferably made flexible from a glass or plastic material. The light source is designed as an LED light source or a laser light source.

In addition, a control circuit can be provided by means of which the light guides 5 , 5 ' , 25th , 25 ' , 25 " , 26th , 27 are each individually controllable to output a different illuminance of the same.

List of reference symbols

1.1 '

Illuminated area

2

ground

3

vehicle

4th

Vehicle door

5.5 '

Light guide

6th

Side skirts

7th

Face

8th

Light source

9

Scattering optics

10

coupled light

11

Jacket segment

12

Decoupling light

13

Bumper

14th

Sections

15.15 '

Edge wall

16

Light guide mount

17th

Support bars

18th

Headliner

19th

Reading area

20th

Cladding surface

21st

Seat

22nd

Roof edge

25.25 ', 25 "

Light guide

26th

Light guide

27

Light guide

28

Controls

29

Center console

30th

Color change elements

31

Reflection means

E.

Direction of extension

A.

axis

d

diameter

b

width

α

radial scattering angle

β

axial scattering angle

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102016202752 A1 [0002]
• DE 102009041976 A1 [0003]
• DE 102018119874 A1 [0004]

Claims (15)

Lighting device for vehicles with a number of light sources (8) and with one of the light guides (5, 5 ', 25, 25', 25 ", 26, 27) assigned to the light source (8) containing decoupling means (9) for deflecting one in the light guide (5, 5 ', 25, 25', 25 ", 26, 27) coupled light (10) in the direction of one in the direction of extension (E) of the light guides (5, 5 ', 25, 25', 25", 26, 27 ) running light outcoupling jacket segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27), characterized in that - the light guide (5, 5 ', 25, 25', 25", 26 , 27) is linear and is mounted in an elongated light guide receptacle (16) of a trim part (18) and / or a body part (6, 13) of the vehicle (3), - that a light coupling fed by the light source (8) is at least an end face (7) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) is arranged, - that the light source (8) is designed as an LED or laser light source, - that the Ausk Oppel means of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) are designed as scattering elements (9) which are inside the light guide (5, 5 ', 25, 25', 25", 26, 27 ) are arranged distributed so that the coupled light (10) is deflected in the direction of the light outcoupling cladding segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27). Lighting device according to Claim 1 , characterized in that the scattering elements (9) are arranged in the light guide (5, 5 ', 25, 25', 25 ", 26, 27) oriented such that the light (10) striking the scattering elements (9) so on the light-decoupling cladding segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) that from the light-decoupling cladding segment (11) light (12) at a radial scattering angle range (α) of 60 ° to 80 ° and under an axial scattering angle range (β) of 80 ° to 100 °. Lighting device according to Claim 1 or 2 , characterized in that the light guide (5, 5 ', 25, 25', 25 ", 26, 27) and / or the light guide receptacle (16) is preceded by a lens to protect the same, Lighting device according to one of the Claims 1 to 3 , characterized in that the light guide (5, 5 ', 25, 25', 25 ", 26, 27) has a transverse extension (d) in the range of 2 mm to 8 mm or that the transverse extension (d) of the light guide (5 , 5 ', 25, 25', 25 ", 26, 27) is smaller than 2 mm. Lighting device according to one of the Claims 1 to 4th , characterized in that the light guide (5, 5 ', 25, 25', 25 ", 26, 27) has several sections of the same transverse and longitudinal extension directly adjoining in the direction of extension (E), from which the same luminous flux is coupled out becomes. Lighting device according to one of the Claims 1 to 5 , characterized in that the light outcoupling cladding segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) has a transverse extension (B) in the range of 0.5 mm to 3 mm. Lighting device according to one of the Claims 1 to 6th , characterized in that the body part receiving the light guide (5, 5 ', 25, 25', 25 ", 26, 27) is designed as a side sill (6) and / or bumper (13) and that the light guide (5, 5 ', 25, 25', 25 ", 26, 27) in the light guide receptacle (16) of the body part either flush with an edge wall of the same or recessed in the light guide receptacle (16). Lighting device according to Claim 7 , characterized in that the light guide receptacle (16) is integrally connected to the body part and that the light guide receptacle (16) in the direction of extent (E) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) has a plurality of spaced-apart support bars (17) which cover areas in the light-decoupling jacket segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27). Lighting device according to one of the Claims 1 to 8th , characterized in that no scattering element (9) is arranged in a first section of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) facing the light coupling, so that the coupled light (10) only by total reflection on the lateral surface of the first section into a second section of the light guide (5, 5 ', 25, 25', 25 ", 26, 27) adjoining the first section, the second section being the scattering elements (9) has for deflection in the direction of the light-decoupling cladding segment. Lighting device according to one of the Claims 1 to 9 , characterized in that the cladding part of the vehicle is designed as a roof lining (18) and / or as a roof lining and / or as an edge of a sliding roof and / or as a panoramic window and / or as a roof edge (22) and that the light guide ( 5, 5 ', 25, 25', 25 ", 26, 27) has such a profile that a reading surface (19) and / or an operating element (28) is illuminated. Lighting device according to one of the Claims 1 to 10 , characterized in that the light guide (5, 5 ', 25, 25', 25 ", 26, 27) has a plurality of sections arranged at an angle to one another in the form of a polygon, in particular in the form of a rectangle or a square or a triangle. Lighting device according to one of the Claims 1 to 10 , characterized in that a light guide arrangement consists of several light guides (5, 5 ', 25, 25', 25 ", 26, 27) in the form of a polygon, in particular a rectangle, parallelogram, or by a plurality of light guides (5 , 5 ', 25, 25', 25 ", 26, 27) is formed and that a control circuit is provided by means of which light guides (5, 5 ', 25, 25', 25", 26, 27) can be individually controlled for the output of a different illuminance of the same .. Lighting device according to one of the Claims 1 to 12 , characterized in that the light guide (5, 5 ', 25, 25', 25 ", 26, 27) with an assigned laser light source has color change elements (30) for converting the coupled light (10) from a first wavelength to a second wavelength having. Lighting device according to Claim 13 , characterized in that the color-changing elements (30) is applied in the form of a coating on the longitudinal jacket segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27). Lighting device according to one of the Claims 1 to 14th , characterized in that reflection means (31) are arranged on the side opposite to the jacket segment (11) of the light guide (5, 5 ', 25, 25', 25 ", 26, 27).

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