CN103867983B - Motor vehicles back light - Google Patents

Abstract

A motor vehicle rear light (10) having a plurality of light functions, namely at least a tail light function, a turn signal function and a brake light function, and having a three-dimensionally contoured cover disc for emitting light ( 11), the cover plate defines a plurality of staggered light exit sections (34, 35, 36), wherein the tail light function, turn signal function and brake light function are provided by the light guide (15, 23) and the LED light sources (16, 17, 24, 33) acting together with light guides, and wherein these light guides (15, 23) protrude into these light exit sections (34, 35, 36) with legs (20, 28) ), with decoupling optics (21, 29) designed on these legs.

Description

Motor Vehicle Rear Lights

technical field

The invention relates to a rear light of a motor vehicle having multiple light functions, namely at least the function of a tail light, a turning light and a brake light.

Motor vehicle rear lights have long been known from practice. Motor vehicle rear lights are thus known from practice to have various light functions, for example a tail light function, a brake light function, a turn signal function, a reversing light function and a rear fog light function. In the motor vehicle rear lights known from practice, the function of these lights is provided by a corresponding light source of the motor vehicle rear light.

Background technique

DE 102 14 505 A1 discloses a motor vehicle rear light with multiple light functions, ie at least a tail light function, a brake light function, a turn signal function and a reversing light function. Here, it is also known from the prior art to use LED light sources as light sources for at least some of these light functions.

Known from DE 1 941 599 U is a motor vehicle rear light with multiple light functions, namely at least a tail light function, a turn signal function and a brake light function, wherein the motor vehicle rear light has a three-dimensional A cover disk that is contoured and defines a plurality of staggered light exit segments. The turning light can leave the cover disk from a central light exit section.

Contents of the invention

Proceeding from this, the present invention is based on the object of creating a new type of motor vehicle rear light.

This object is achieved by a motor vehicle rear light according to the following description. In the sense of the invention, the function of the tail light, the function of the turn signal light and the function of the brake light is composed of a plurality of light guides and a plurality of LED light sources interacting with them, wherein the light guides protrude with legs into the light exit section , decoupling optics are designed on these legs. As a result, a completely new illumination pattern of the motor vehicle rear light and thus a new type of identification feature of the motor vehicle can be provided.

According to an advantageous development of the invention, the function of the tail light and the function of the turn signal are composed of a common central light guide and a plurality of LED light sources interacting with it, wherein the central light guide uses a horizontally A leg protrudes into a central light exit section of the cover disk, on which leg a decoupling optic is formed. According to a further advantageous development of the invention, the brake light function is formed by at least one outer light guide and a plurality of LED light sources interacting with it, wherein the or each outer light guide uses a horizontally A leg protrudes into the outer light exit section of the cover disk, on which leg a decoupling optic is formed. As a result, a completely new illumination pattern of the rear light of the motor vehicle and thus a new identification feature of the motor vehicle can be provided.

Preferably the or each outer light guide providing the brake light function surrounds on at least two sides the central light guide providing the tail light function and turn signal function, wherein the outer light exit sections are positioned at the On at least two sides of the middle light exit section.

According to an advantageous development, the substantially vertically extending parts of the light exit sections are made of a light-transmitting material, wherein the substantially horizontally extending parts of the light exit sections The part is at least partially made of an opaque material.

Between the light exit sections into which the light guide protrudes are positioned vertically extending cover sections of the cover disk, which cover sections are made of a transparent or translucent material, wherein the A visual element with a three-dimensional outline is positioned behind the cover sections. As a result, a completely new illumination pattern of the rear light of the motor vehicle and thus a new identification feature of the motor vehicle can be provided.

The cover disk is preferably groove-shaped, has a central ridge or has an E-shaped profile in cross section. The light guide or one of the light guides providing the brake light function protrudes into lateral, outer light exit sections which delimit a slot-shaped or E-shaped cover in cross section one edge of the plate. The light guide, which provides the function of the rear light and the turn signal, protrudes into the central light exit section, which delimits the central elevation of the cover disk which is groove-shaped or has an E-shaped profile in cross section.

Description of drawings

These preferred refinements of the invention are presented in the subclaims and in the following description. Exemplary embodiments of the invention will be described in detail with reference to the drawings, but the exemplary embodiments are not restricted thereto. Here it is shown:

Figure 1 is a front view of the motor vehicle rear light of the present invention; and

FIG. 2 is a cross-sectional view along the section line II-II through the motor vehicle rear light of FIG. 1 .

detailed description

The invention relates to a motor vehicle rear light with multiple light functions, namely at least a tail light function, a turn signal function and a brake light function.

FIG. 1 shows a front view of a motor vehicle rear light 10 according to the invention, ie a front view of a cover disk 11 of the motor vehicle rear light 10 , wherein the motor vehicle rear light 10 is embodied in two parts in the exemplary embodiment shown. The first part 12 of the motor vehicle rear light 10 is integrated in a fixed side part of the motor vehicle body, whereas the second part 13 of the motor vehicle rear light 10 is integrated in a movable tailgate (Heckklappe) of the motor vehicle body. )middle. When opening and closing the tailgate, the two parts 12 and 13 of the motor vehicle rear light 10 are movable relative to each other. It should be noted that the motor vehicle rear light 10 can also be embodied in one piece, wherein a one-piece motor vehicle rear light 10 is integrated in a fixed side part of the motor vehicle body.

FIG. 2 shows a cross-sectional view through the motor vehicle rear light 10 of FIG. 1 along the section line II-II, wherein in FIG. The housing 14 and the assembly of the motor vehicle rear light 10 positioned between the housing 14 on the rear side and the cover plate 11. The sectioning direction extends in the longitudinal direction of the motor vehicle.

The tail light function and the brake light function of the motor vehicle rear light 10 are composed of a common, central first light guide 15 and a light incident light in the first light guide 15 which interacts with the first light guide 15. LED light sources are provided, wherein in the exemplary embodiment shown a first LED light source 16 is used to emit light for the tail light function and a second LED light source 17 is used to emit light for the turn signal function.

As can be seen from FIG. 2 , the central first light guide 15 , which provides the function of the tail light and the turn signal, is designed in a T-shape in cross section. At its vertically running leg 18, coupling optics 19 for optically coupling the light emitted by the LED light sources 16, 17 are designed, wherein a horizontally running leg 20 of this first light guide 15 A decoupling optic 21 is designed at , in order to decouple the light coupled into the light guide 15 from the light guide for emission into the environment. The coupling optics 19 and the decoupling optics 21 are preferably Fresnel structures. In the transition between the vertically running legs 18 and the horizontally running legs 20 , a bevel (Abwinkelung) and thus a total reflection surface 22 are correspondingly designed, in order to couple to the vertical The light in the running leg 18 is deflected into the horizontally running leg 20 of the first light guide 15 .

The brake light function of the motor vehicle rear light 10 is provided by one or more external second light guides 23 and an LED light source 24 cooperating with the or each second light guide 23, wherein these LED light sources 24 will Light is incident into the or each second light guide 23 for the brake light function.

The or each light guide 23 providing the brake light function is positioned at least above or below the first light guide 15 providing the tail light function and the turn signal function, such that thereby an optically visible area for the brake light is at least The optical visibility area for the taillights and turn signals is surrounded on both sides.

Then, in the area of each of its parts 11 , 12 , the visible area for the tail light and the turn signal is used for the brake light when, as in the illustrated embodiment, the motor vehicle rear light 10 is embodied in two parts. The viewable area of the is preferably enclosed on three sides, ie above, below and on the sides of the two parts 11 , 12 facing away from each other.

Then, when the motor vehicle rear light 10 is designed in one piece, the viewing area for the tail light and the turn signal is surrounded by the viewing area for the brake light, preferably on four sides, ie above, below and laterally.

The or each outer second light guide 23 that provides the brake light function is L-shaped in cross-section or has a section with an L-shaped profile in cross-section, wherein at the vertically extending legs 25 the corresponding A coupling optics 27 is designed to couple the light emitted from the LED light source 24 for the brake light function into the or each second light guide 23 . Decoupling optics 29 are formed at the horizontally running legs 28, via which the light guided by the or each second light guide 23 can be decoupled or decoupled from the second light guide. . The coupling optics 27 and the decoupling optics 29 are again preferably Fresnel structures.

In the transition between the vertically running legs 25 and the horizontally running legs 28 of the or each outer second light guide 23, a total reflection surface 30 is designed again, so that in this or each second light guide 23 In the region of the light guide 23 , the light from the respective vertically running leg 25 is deflected into the corresponding horizontally running leg 28 .

The first one of the outer second light guide 23 designed L-shaped in cross section or the first part of the light guide 23 designed L-shaped in cross section (providing the brake light function) is positioned to provide the rear light Function and brake light function in the middle above the first light guide 15 . The second of the outer second light guide 23 designed L-shaped in cross section or the second part of the light guide 23 designed L-shaped in cross section (for providing the brake light function) is arranged Below the first light guide 15 in the middle that provides the tail light function and the turn signal function. Preferably, at least one third of the outer second light guide 23 designed as L-shaped in cross section or at least one third part ( providing the brake light function) is arranged laterally on at least one side beside the first light guide 15 providing the intermediate functions of the tail light and the turn signal.

In a first variant, there are several separate, L-shaped, outer light guides 23 .

According to a second variant, there is a single, one-piece, outer light guide 23 designed with L-shaped segments.

A plate is positioned between one of the outer second light guides 23 or a part of the second light guide 23 providing the brake light function and the first light guide 15 in the middle providing the tail light function and the turn signal function 31, the plate carries the LED light sources 24 for the brake light function on a first side and the LED light sources 16 for the tail light function on a second side.

Between the other of the outer second light guide 23 providing the brake light function or another part of the second light guide 23 and the intermediate first light guide 15 providing the tail light function and the turn signal function, In the exemplary embodiment shown, two plates 32 and 33 are provided, one plate 32 carrying the LED light sources for the turn signal function and one plate 33 carrying the LED light sources 24 for the brake light function. The panel 32 with a separate LED light source 17 for the turn signal function can then be dispensed with if the tail light function and the turn signal function can be provided in a common light color.

Motor vehicle rear lights between the vertically running legs 25 of the or each outer second light guide 23 and the vertically running legs 18 , 19 of the central first light guide 15 The light coupling with respect to the LED light sources 16 , 17 , 24 and 27 takes place in a central, central region of 10 .

In a motor vehicle rear light, the brake light function provided by the or each outer light guide 23 and LED light source 24 is designed to surround the tail light function and steering function provided by the central light guide 15 and LED light sources 16 , 17 light function.

The or each outer light guide 23 for the brake light function is here designed L-shaped in cross section and has a total reflection surface 30 so that light coupled therein by the vertically running legs 25 into its horizontally running leg 28 .

In order to provide a brake light with sufficient light intensity and uniform light distribution, the LED light sources 24 for providing the brake light function are positioned next to each other at a distance of 10 mm to 20 mm, preferably at a distance of 15 mm to 20 mm.

The cover disk 11 of the motor vehicle rear light 10 has a three-dimensional contour, simultaneously forming a plurality of offset light exit sections 34 , 35 , 36 or a plurality of offset light exit planes.

The cover disk 11 , as shown in particular in FIG. 2 , is groove-shaped, has a central ridge or has an E-shaped profile in cross section.

The horizontally running legs 28 of the or each second outer light guide 23 for providing the brake light function respectively project into an upper, outer light exit section 34 of the cover disk 11 and into an upper, outer light exit section 34 of the cover disk 11 . In a lower, outer light exit section 35 and at least one lateral, outer (not visible in FIG. 2 ) light exit section of the cover disk 11 . The outer light exit sections delimit an edge of the groove-shaped or E-shaped cover disk 11 in cross section.

The horizontally running leg 20 of the first central light guide 15 for providing the taillight function and the turn signal function protrudes into a central light exit section 36 of the cover disk 11 . The central light exit section delimits a central elevation of the groove-shaped or E-shaped cover disk 11 in cross section.

A substantially vertically extending portion 37 of the central light exit section 36 and an inclined section 38 of the outer light exit sections 34 and 35 of the cover plate 11 are made of light-transmitting material, such that Light decoupled from the light guides 15 and 23 is enabled to be emitted outward to the surroundings of the motor vehicle. The substantially horizontally extending parts 39 and 40 of the light exit sections 34 , 35 and 36 of the cover disk 11 are in contrast produced from a light-impermeable material.

The cover area of the groove-shaped or E-shaped cover plate 11 in cross section extending between the light exit sections 34 and 36 and between the light exit sections 35 and 36 extends essentially in the vertical direction. Segment 41 is made of a transparent or translucent material, wherein correspondingly positioned behind this cover section 41 is a visible part 42 with a three-dimensional contour, which is used to further optically enable the motorized The vehicle rear light 10 is differentiated. The substantially vertically extending cover sections 41 delimit the base of the trough-shaped or E-shaped cover plate 11 in cross section.

Claims (11)

1. a motor vehicles back light, this motor vehicles back light has multiple light function, i.e. At least there is tail lamp function, steering indicating light function and brake lamp function, and have one for The covering dish (11) having three-D profile of light outgoing, this covering dish limits multiple light staggered Outgoing section (34,35,36), it is characterised in that this tail lamp function, steering indicating light function It is by lightguide (15,23) and LED coefficient with this lightguide with brake lamp function Light source (16,17,24) is constituted, and these lightguides (15,23) supporting leg (20, 28) charge into these light outgoing section (34,35,36), these supporting legs are designed with and move back Coupling optics (21,29), and this tail lamp function and steering indicating light function be by one altogether Centre lightguide (15) and with the lightguide of this centre coefficient multiple LED Light source (16,17) forms, wherein the lightguide of this centre be horizontally orientated to one, The supporting leg (20) being designed with a decoupling optics (21) on it protrudes into this covering dish (11) in light outgoing section (36) of a centre.

Motor vehicles back light the most according to claim 1, it is characterised in that this brake Lamp function is the lightguide (23) outside by least one and common with the lightguide of this outside Multiple LED light sources (24) of effect form, wherein this or the lightguide of each outside That be horizontally orientated to one, be designed with the supporting leg (28) of a decoupling optics (29) on it In light outgoing section (34,35) of the outside protruding into this covering dish (11).

Motor vehicles back light the most according to claim 2, it is characterised in that providing should The lightguide (23) of this or each outside of brake lamp function wraps at least two side Enclose the lightguide (15) of this centre that this tail lamp function and steering indicating light function are provided, wherein this A little outside light outgoing section (34,35) are positioned at light outgoing section (36) of this centre At least two side on.

Motor vehicles back light the most according to claim 3, it is characterised in that this covering Dish (11) is the groove-like structure of the protuberance with a centre or has E on cross section The profile of shape, wherein provides this lightguide (23) or these leaded lights of this brake lamp function One of device protrudes in light outgoing section (34,35) of lateral outside, and wherein carries Lightguide (15) for this tail lamp function and steering indicating light function protrudes into the light outgoing of this centre In section (36).

5. according to the motor vehicles back light one of Claims 1-4 Suo Shu, it is characterised in that The lightguide (15) providing the centre of this tail lamp function and steering indicating light function sets in cross-section It is calculated as T-shaped, wherein supporting leg (18) place of the multiple vertical trend of the lightguide in this centre It is designed with the multiple Coupling optics (19) for optical coupling, wherein vertically walks at these To light outgoing section (36) protruding into this centre that is horizontally orientated to this of supporting leg (18) In supporting leg (20) between transition part in be correspondingly designed with a fully reflecting surface (22), So that the light that will be coupled in these supporting legs (18) vertically moved towards redirect to this and is horizontally orientated to Light outgoing section (36) protruding into this centre in supporting leg (20) in.

6. according to the motor vehicles back light one of claim 2 to 4 Suo Shu, it is characterised in that The lightguide (23) providing this or each outside of this brake lamp function sets in cross-section It is calculated as L-shaped or there is the part being designed as L-shaped in cross-section, wherein, multiple perpendicular Supporting leg (25) place of straight trend is correspondingly designed with a coupling optical device for optical coupling Part (27), wherein multiple be horizontally orientated to protrude into this outside light outgoing section (34, 35) supporting leg (28) place in is correspondingly designed with a decoupling optics (29), and And wherein these vertically trend supporting legs (25) with these be horizontally orientated to protrude into this outer In the transition portion between supporting leg (28) in light outgoing section (34,35) in portion accordingly Be designed with a fully reflecting surface (30), in order to will be coupled into corresponding vertically trend Light in leg (25) redirect to the light outgoing district protruding into this outside being horizontally orientated to accordingly In supporting leg (28) in section (34,35).

Motor vehicles back light the most according to claim 6, it is characterised in that providing One in these outside lightguides (23) of this brake lamp function or the leaded light of this outside One part of device and this tail lamp function of offer and the lightguide of the centre of this steering indicating light function (15) between, there is a plate (31) location, and this plate is used for this brake in the first side carrying The LED light source (24) of lamp and in the second side carrying at least for the LED light of this taillight Source (16).

Motor vehicles back light the most according to claim 7, it is characterised in that providing Leading of another one in these outside lightguides (23) of this brake lamp function or this outside Another part of light device and this tail lamp function of offer and the lightguide of the centre of this steering indicating light function (15) between, there is the carrying other LED light source (24) for this brake lamp location Plate (33).

Motor vehicles back light the most according to claim 8, it is characterised in that in carrying For this brake lamp other LED light source (24) described plate (33) with provide this tail Between the lightguide (15) of lamp function and this steering indicating light function, there is an other plate location (32), this other plate carrying is for the LED light source (17) of this steering indicating light.

10. according to the motor vehicles back light one of Claims 1-4 Suo Shu, it is characterised in that These light outgoing section (34,35,36) extend in vertical direction part (37, 38) it is made up of light transmissive material, and these light outgoing section (34,35,36) The part (39,40) extended in the horizontal direction is at least partially by light-proof material system Become.

11. according to the motor vehicles back light one of claim 2 to 4 Suo Shu, it is characterised in that The covering section (41) extended in vertical direction of this covering dish (11) is positioned in this Between light outgoing section (36) of centre charged into of lightguide (15) and leading of this outside Between light outgoing section (34,35) of the outside that light device (23) is charged into and this covering Section is made up of transparent or semitransparent material, wherein correspondingly fixed after this covering section There is a visual part with three-D profile (42) position.