EP3752766A1 - Beleuchtungsvorrichtung zur erzeugung von wenigstens zwei lichtfunktionen mit einem streifen- oder linienartigen lichterscheinungsbild - Google Patents
Beleuchtungsvorrichtung zur erzeugung von wenigstens zwei lichtfunktionen mit einem streifen- oder linienartigen lichterscheinungsbildInfo
- Publication number
- EP3752766A1 EP3752766A1 EP19704739.2A EP19704739A EP3752766A1 EP 3752766 A1 EP3752766 A1 EP 3752766A1 EP 19704739 A EP19704739 A EP 19704739A EP 3752766 A1 EP3752766 A1 EP 3752766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- lighting device
- optically active
- active component
- emitting diodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- Lighting device for generating at least two light functions with a streak or line-like light appearance
- the invention relates to a lighting device for generating at least two light functions with a strip or line-like light appearance with the
- Such lighting devices are already known from the general state of the art.
- lighting devices having a plurality of horizontally juxtaposed reflectors, each associated with two LEDs, one of which can emit a yellow and the other white light.
- an elongate, horizontally oriented intermediate light disk is arranged in front of the light emitting diodes, which is intended to lead to the homogenization of the light appearance.
- a direction indicator or a daytime running light is to be generated as a light function
- either the yellow light or the white light emitting LEDs are activated.
- the disadvantage of this solution is that on the one hand several reflectors are needed and on the other hand, the homogeneity of the light emission is not satisfactory.
- Light emitting diodes which can emit light of different colors, in
- Lichtabstrahlutter a thick-walled optical component (so-called thick-wall optics) to be arranged, through which the emitted light of the light-emitting diodes can be diffused and then directed in the desired direction.
- thick-wall optics the optical component that the emitted light of the light-emitting diodes can be diffused and then directed in the desired direction.
- a plurality of light-emitting diodes is required in order to produce an elongated light appearance.
- the achievable homogeneity of the visible light appearance is not satisfactory here.
- US 6 340 239 B1 proposes a lighting device in which an incandescent lamp is used.
- the lighting device further comprises a lens and an intermediate lens.
- a shield-like component is arranged which collects the light of the incandescent lamp both in the direction of a first longitudinal center plane of the illumination device and in the direction of a second longitudinal central plane of the illumination device perpendicular to the first longitudinal medial plane.
- the intermediate lens In the assembled state of the lighting device, the first longitudinal center plane is horizontal and the second longitudinal central plane is vertical.
- the intermediate lens also has a sawtooth-like optical structure produced by vertically extending grooves, which faces the umbrella-like component. The incident on the intermediate lens light rays are finally aligned parallel to an optical axis of the bulb.
- Cover plate in turn has a the intermediate lens facing cushion optics, which serves for the final scattering of the light rays.
- an illumination device in which a shield-like, optically active component is likewise arranged between an incandescent lamp and an intermediate lens.
- the optically active component Through the optically active component, the light beams emitted by the incandescent lamp are in turn in the direction of a first longitudinal center plane of the illumination device and then in the direction of a second, perpendicular to the first
- the intermediate lens Longitudinal central plane standing longitudinal center plane of the lighting device collected so that they fall on the intermediate lens.
- the intermediate lens in turn has on its side facing the bulb or the umbrella-like component side only locally limited, sawtooth-like optics through which the light rays are aligned parallel to the optical axis of the bulb.
- sawtooth-like optics through which the light rays are aligned parallel to the optical axis of the bulb.
- the US 2007 0030 688 A1 discloses a lighting device, wherein in the light emission direction in front of a light emitting diode, an elongated, strip-like
- the intermediate lens is arranged.
- the intermediate lens has a on the
- the light-emitting diode side facing away from the intermediate lens is equipped with a sawtooth-like optical structure.
- Light-emitting diode is in a transparent together with a conductive support part
- the sealant is elongated in the horizontal direction formed and has two hump-like projections which protrude from a block-shaped body of the sealant. In this way should be a very homogeneous
- Light appearance can be achieved upon activation of the lighting device.
- the light of a plurality of LEDs is first emitted to the rear in the direction of reflector segments and reflected by the reflector segments in the direction of a lens.
- the invention is initially based on a lighting device for generating at least two light functions with a strip or line-like light appearance.
- the lighting device there are at least two light-emitting diodes through which light of different color can be emitted.
- at least one optically active component is present, which converts the light of the LEDs in the direction of a lens or deflects.
- Under lens is such a transparent or translucent component understood that shields the interior of the lighting device against environmental influences.
- the invention now proposes that the light emitting diodes in the light emission direction is followed by a first, optically active component, which impinges, diverges
- Lighting device collects. This takes place in such a way that the light rays fall on a second optically active component arranged downstream of the first optically active component. On the second optically active component impinging, divergent light beams are then at a first interface of the second optically active component exclusively in Direction of a second, perpendicular to the first longitudinal center plane standing longitudinal center plane of the lighting device collected. Finally, the light beams are scattered again at a second interface of the second optically active component.
- a lighting device can be provided which provides an extremely homogeneous light appearance. Depending on the mounting position of
- Lighting device is conceivable that the first longitudinal center plane is aligned horizontally and the second longitudinal center plane vertically. The reverse case is also conceivable.
- the first, optically active component has a recess into which the light-emitting diodes project at least in part, their light being coupled in through areas of the recess, collected in the component in the direction of the first longitudinal center plane, and through at least one further surface is decoupled again.
- the luminous efficacy can be increased and the alignment of the light beams can be effectively performed.
- Another embodiment of the inventive concept proposes that incident light beams seen in said, first longitudinal center plane leave the first, optically active component at an angle of about 180 degrees. This contributes to the fact that the light functions, which are to be made optically visible as strip or line-like areas, have an extremely homogeneous light appearance.
- the first boundary surface of the second, optically active component can have grooves running along its width, and the second boundary surface of the second optically active component can have a cushion optic.
- the desired optical properties of the second component namely first to collect the light in the direction of the second longitudinal center plane and then to scatter the light again, well feasible.
- the optics of the first, optically active component is designed such that their focal point, seen in a plane of the light emitting diodes perpendicular to the optical axis, between the light emitting diodes.
- At least one of the light-emitting diodes can emit yellow or orange light and at least one other of the light-emitting diodes white light.
- Lighting device can then be part of a headlight, for example.
- At least one of the light emitting diodes can emit yellow or orange light and at least one other of the light emitting diodes red light.
- the lighting device may be part of a tail light, with the light functions of a
- Direction indicator and a brake light can be generated.
- a motor vehicle to be placed under protection which is equipped with at least one lighting device according to the invention.
- FIG. 1 is a front view of a vehicle equipped with lighting devices according to the invention
- Fig. 2 shows the representation of a portion of an inventive
- FIG. 4 shows a vertical section according to sectional view IV of FIGS. 2 and 3,
- FIG. 5 is a perspective view of the first, optically active component in
- Fig. 6 is an illustration of the first, optically active component in one
- FIG. 8d shows a vertical section through the second embodiment of the second optically active component, comparable to the sectional view from FIG. 6 and FIG
- Figures 9a and 9b is a representation of the focal point of the first, optically effective
- Component when using two or three LEDs.
- Fig. 1 shows schematically the front view of a motor vehicle K, which has two lighting devices 1 according to the invention.
- the lighting devices 1 are designed as headlights. Between them, a grille 2 is arranged.
- Each of the lighting devices 1 has a cover plate 3, which the
- Lighting device 1 closes forward against environmental influences.
- the cover disk 3 has an upper region 3a and a lower, strip-like or line-like region 3b.
- the cover plate 3 is formed as a transparent cover plate, wherein behind the upper portion 3a
- Light sources for generating a low beam and a high beam function are indicated by dashed lines. Behind the lower region 3b is an optically active component 4 in the form an intermediate lens visible. The function of the component 4 will be explained later in more detail.
- the lower region 3b of the lighting device 1 should be both the light functions of a strip-like daytime running light and a strip-like
- the lens 3 is not shown.
- Fig. 2 shows the optically active component 4, so the intermediate lens from the front.
- the intermediate lens 4 is formed as an elongate, strip-like component with a length I and a width b.
- H is a first, horizontal longitudinal center plane, with V a second, vertical longitudinal center plane of the lighting device 1 numbered.
- the optically active component 4 is made thin and slightly curved over its length I. It has a first, optically active interface 4a and a second, optically active interface 4b.
- the first interface 4a When viewed in the mounting position of the lighting device 1, the first interface 4a is formed by grooves R running vertically, ie perpendicular to the plane of the drawing. As a result, the first interface 4a has a sawtooth-like profile which extends substantially along the entire length I of the component 4.
- the depth of the grooves R decreases continuously at the edge regions 40 towards the ends 41 of the component 4.
- a circuit board 7 is arranged, which close together two
- Light emitting diodes 5 and 6 carries.
- the light-emitting diode 5 can emit yellow light
- the light-emitting diode 6 white light.
- a first, optically active component 8 is arranged between the light emitting diodes 5, 6 and the second, optically active component 4, a first, optically active component 8 is arranged.
- the component 8 is formed umbrella-like and extends in the horizontal direction in a semicircle in front of the LEDs 5 and 6th As is clear from FIGS. 3 and 4, the first, optically active component 8 serves only or exclusively to emit light emitted from the light-emitting diodes 5 and 6
- Light beams L are collected in particular by the component 8 such that they are aligned parallel to the horizontal longitudinal center plane H and can thus fall on the second optically active component 4.
- X the direction of the optical axes of the LEDs 5, 6 numbered, which coincide with the longitudinal center plane H.
- optically active component 8 is shown in isolation.
- the component 8 is formed smooth. It is characterized by the semicircular
- Forming the component 8 is formed in an approximately semi-cylindrical receiving area 8a.
- the light-emitting diodes 5 and 6 are positioned relative to the component 8 in such a way that they protrude somewhat into the receiving region 8a. Furthermore, the optical axes X of the light-emitting diodes 5, 6 pass through the most pronounced point of a concave elevation 8c. From the light-emitting diodes 5, 6 emitted light beams L are in (vertical) outer edge regions of the component 8 is first broken and then over a
- the light rays L incident on the first boundary surface 4a are first collected in the direction of the vertical longitudinal center plane V and are preferably aligned parallel to one another. This is preferably done so that the light rays point in the usual direction of travel.
- the interface 4b is formed in the form of a cushion optic KO.
- the component 9 is formed in plan view by a semi-cylindrical body of revolution.
- the component 9 has, from a view according to FIG. 8c, a surface 9a facing the light-emitting diodes 5, 6 and a surface 9f facing away from the light-emitting diodes 5, 6.
- the surface 9a is flat, while the surface 9f is bent semicircular.
- an upper surface 9e and a lower surface 9g are provided. Both the surface 9e and the surface 9g deepen in the direction of an imaginary axis of rotation M and take there the smallest distance from each other (see Fig. 8b).
- a recess A is mounted, which is also formed in a view of FIG. 8c in the outline of a semicircle.
- the recess A has upper and lower surfaces 9b and a circumferential surface 9c.
- the surface 9 c is convex and has approximately at mid-height of
- the light emitting diodes 5, 6 and the component 9 are aligned in the assembled state of the lighting device 1 such that the light emitting diodes 5, 6 protrude into the recess A and optical axes X of the light emitting diodes 5, 6 at height the unloaded point of the surface 9c lie.
- the LEDs 5, 6 are aligned in the assembled state of the lighting device 1 such that the light emitting diodes 5, 6 protrude into the recess A and optical axes X of the light emitting diodes 5, 6 at height the unloaded point of the surface 9c lie.
- emitted light beams are thus coupled through the surfaces 9b and 9c in the component 9, wherein the light beams L coupled via the surfaces 9b arrive at the surfaces 9e and 9g under total reflection to the surface 9f and there emerge from the component 9.
- the light beams L coupled in via the surface 9c are refracted at the surface 9c and from there pass directly to the surface 9f, where they emerge from the component 9.
- the light beams L emerging from the component 9 via the surface 9f are aligned in the direction of the horizontal longitudinal center plane H, preferably parallel to it. An alignment of the light beams L in the direction of the vertical longitudinal center plane V (identical to drawing plane) does not take place here either.
- the optics of the first, optically active component 8 or 9 can be suitably adapted to the light emitting diodes.
- the optics of the first, optically active component 8 or 9 is now designed such that their focal point B is located on an imaginary connecting line 10 of the light-emitting diodes 5 and 6 between the light-emitting diodes 5 and 6.
- the connecting line 10 lies in a plane which is perpendicular to the optical axes of the LEDs 5, 6.
- the focal point B is on the connecting line 10 where it has the same distance to both light-emitting diodes 5 and 6.
- Fig. 9b an embodiment is shown, in which on the board 7 three
- Light emitting diodes are arranged.
- a light-emitting diode for emitting light in a first color (for example yellow) and two light-emitting diodes 6 for emitting light in a second color (for example white) are present.
- the optical axes of the LEDs are at regular angular intervals on an imaginary circle 1 1 perpendicular to the optical axes.
- the optics of the first optically active component 8 or 9 is now designed such that their focal point B falls into an imaginary center of the circle 1 1.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018202325.5A DE102018202325A1 (de) | 2018-02-15 | 2018-02-15 | Beleuchtungsvorrichtung zur Erzeugung von wenigstens zwei Lichtfunktionen mit einem streifen- oder linienartigen Lichterscheinungsbild |
PCT/EP2019/051794 WO2019158338A1 (de) | 2018-02-15 | 2019-01-24 | Beleuchtungsvorrichtung zur erzeugung von wenigstens zwei lichtfunktionen mit einem streifen- oder linienartigen lichterscheinungsbild |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3752766A1 true EP3752766A1 (de) | 2020-12-23 |
Family
ID=65409045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19704739.2A Pending EP3752766A1 (de) | 2018-02-15 | 2019-01-24 | Beleuchtungsvorrichtung zur erzeugung von wenigstens zwei lichtfunktionen mit einem streifen- oder linienartigen lichterscheinungsbild |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3752766A1 (de) |
DE (1) | DE102018202325A1 (de) |
WO (1) | WO2019158338A1 (de) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5803579A (en) * | 1996-06-13 | 1998-09-08 | Gentex Corporation | Illuminator assembly incorporating light emitting diodes |
FR2782370B1 (fr) | 1998-08-14 | 2000-11-10 | Valeo Vision | Feu de signalisation d'eclairement homogene comprenant des plages lisses |
FR2790540B1 (fr) | 1999-03-02 | 2001-06-08 | Valeo Vision | Feu de signalisation a plage eclairante homogene pour vehicule automobile |
JP4027688B2 (ja) | 2002-03-15 | 2007-12-26 | 株式会社小糸製作所 | 車両用灯具 |
JP2007048470A (ja) | 2005-08-05 | 2007-02-22 | Koito Mfg Co Ltd | 車両用灯具 |
DE102010056313C5 (de) * | 2010-12-27 | 2017-03-16 | Automotive Lighting Reutlingen Gmbh | Beleuchtungseinrichtung eines Kraftfahrzeugs |
DE102013205487A1 (de) * | 2013-03-27 | 2014-10-02 | Automotive Lighting Reutlingen Gmbh | Kraftfahrzeugleuchte für dynamische Leuchtenfunktionen |
DE202014003078U1 (de) * | 2014-04-10 | 2014-04-17 | Osram Gmbh | Optisches Element und Beleuchtungseinrichtung mit optischem Element |
DE102014218991A1 (de) * | 2014-09-22 | 2016-03-24 | Automotive Lighting Reutlingen Gmbh | Leuchte für ein Kraftfahrzeug |
-
2018
- 2018-02-15 DE DE102018202325.5A patent/DE102018202325A1/de active Pending
-
2019
- 2019-01-24 WO PCT/EP2019/051794 patent/WO2019158338A1/de unknown
- 2019-01-24 EP EP19704739.2A patent/EP3752766A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2019158338A1 (de) | 2019-08-22 |
DE102018202325A1 (de) | 2019-08-22 |
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