EP1087175A2 - Signalleuchte für ein Kraftfahrzeug - Google Patents
Signalleuchte für ein Kraftfahrzeug Download PDFInfo
- Publication number
- EP1087175A2 EP1087175A2 EP00119468A EP00119468A EP1087175A2 EP 1087175 A2 EP1087175 A2 EP 1087175A2 EP 00119468 A EP00119468 A EP 00119468A EP 00119468 A EP00119468 A EP 00119468A EP 1087175 A2 EP1087175 A2 EP 1087175A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- light guide
- light
- light source
- lamp
- transparent medium
- 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.)
- Withdrawn
Links
Images
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
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
-
- 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
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
-
- 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
- F21S43/235—Light guides
- F21S43/242—Light guides characterised by the emission area
- F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
-
- 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
- F21S43/235—Light guides
- F21S43/247—Light guides with a single light source being coupled into the light guide
-
- 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
- F21S43/235—Light guides
- F21S43/249—Light guides with two or more light sources being coupled into the light guide
-
- 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
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/35—Brake lights
-
- 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
- the invention relates to a signal lamp for a motor vehicle with a light source in one Housing with a lens.
- a lamp with these elements is from WO 96/13687 known.
- the display device comprises a low-pressure gas discharge lamp with a tubular lamp housing with electrodes.
- the lamp is in a housing arranged with a light exit window and a reflector device.
- the housing has a light-reflecting inner surface that forms the reflector device, and an elongated Convex lens that closes the light exit window.
- the housing can have a recess have in which the lamp is partially received and in which the lamp by an adhesive can be attached.
- the lamp is particularly suitable as a brake light for a motor vehicle suitable.
- a disadvantage with this prior art is that the Low pressure gas discharge lamp takes up a relatively large amount of space. Especially in Brake lights of motor vehicles, however, only have a small space available. Furthermore, the high supply voltage of the gas discharge lamp with respect to the electrical supply a considerable effort, and the interference of other electrical Components in the vehicle due to the electrical supply to the lamp are not negligible.
- the object of the invention is to provide an alternative to the conventional gas discharge lamp in one To create a signal lamp of a motor vehicle that avoids the disadvantages mentioned above.
- the solution to the object according to the invention then consists of several light sources juxtaposed light-emitting diodes (LED) to use in front of a light guide element made of a transparent medium.
- the light guide element essentially serves to direct the light from the light source towards the Light exit window of the lamp is emitted, bundle and (in the transverse direction of the Homogenize).
- the lamp according to the invention with a light source in a housing with a Lens is characterized in that a light guide element from a transparent medium is arranged between the light source and the lens and the Light source comprises a plurality of light-emitting diodes arranged side by side.
- the light source preferably comprises several rows, each next to one another arranged light-emitting diodes. This ensures that the luminosity of the Luminaire can be optimally selected.
- the light-guiding element is a for better coupling of the light from the light source
- Optical fiber rod made of a transparent medium on the side that the light source opposite, has a surface which comprises at least one Fresnel element.
- the light guide element can consist of a light guide disk a transparent medium, one on the side opposite the light source Has surface which comprises at least one Fresnel element.
- the light guide element can consist of two parallel light guide rods include a transparent medium. These can be found on the page that the Opposed light source, have a surface that has at least one Fresnel element includes.
- the light guide element can be a combination of light guide disk and Be light guide rod, in which the light guide element from at least one light guide rod a transparent medium and a light guide disc between the light guide rod and the Includes light source.
- An advantage of the lamp according to the invention is that the light through the Use of the light guide element is "homogenized". Another advantage is that the LEDs respond faster than a gas discharge lamp: with one Speed of 100 km / h means the faster reaction of the light source that one in the Has gained an average braking distance of 8 m.
- An additional advantage of the invention consists in that with LEDs and light conductor element compared to the prior art advantageous radiation properties of the luminaire are achieved, e.g. no reflector anymore necessary.
- the lamp according to the invention which is shown in the exemplary embodiments in FIGS. 1 to 5 comprises a light source 2 in a housing 1.
- the housing 1 is with a lens 3 completed.
- the light source is a low-pressure gas discharge lamp.
- This has the disadvantage that it takes up a relatively large amount of installation space.
- brake lights only a small installation space is available for motor vehicles.
- the Gas discharge lamp can be operated with a higher voltage, which is a considerable Effort related to the electrical supply of the lamp means and to malfunctions other electrical components in the vehicle.
- light sources 2 are therefore arranged side by side light emitting diodes are used. These have the advantage that they can be used for both Acquisition as well as less in the installation and supply in the motor vehicle Cause costs and that they are a better compared to a gas discharge lamp Show response behavior as well as advantageous radiation characteristics.
- Light guide element made of a transparent medium between the light source 2 and the Lens 3 arranged.
- a first is preferably used as the light guide element
- light-emitting diodes are used as the light source (LEDs) are used, which are arranged side by side, so that a row 4 form.
- This row 4 of light-emitting diodes preferably has approximately the extent of the Gas discharge lamp, which is replaced by the structure of the lamp according to the invention shall be.
- the individual light-emitting diodes form easily distinguishable individual light sources. To "blur" the impression of separate individual light sources, is as shown in Fig. 1 between the light source 2 and the lens 3 of the lamp Arranged light guide element that distributes the light more homogeneously in the lateral direction.
- the light guide element in Fig. 3 is a light guide rod 6 made of a transparent medium on the side that the Light source 2 is opposite, has a surface with a structure. in the In the simplest case, this can be a roughening of the surface, but it can also Grooves are milled into the light guide rod, which are parallel to the axis of the light guide rod 6 run, so that there is an additional lens effect. This additional lens ensures a better coupling of the light into the light guide rod 6.
- the light guide element is a light guide plate 8 made of a transparent Medium.
- the light guide disc 8 has analog to the light guide rod 6 on the side that the Light source 2 is opposite, a surface with an integrated Fresnel element 10, which can be constructed essentially the same as the Fresnel element 9 according to FIG. 3.
- the light guide element is a light guide rod 6 from a transparent medium and a light guide disc 8 between the light guide rod 6 and the Includes light source 2.
- This has the advantage that the effect of a cylindrical lens, which is represented by the light guide rod 6.
- FIG. 5 Another embodiment of the invention is shown in FIG. 5.
- the light guide rods 6 and 7 made of transparent medium in turn point from the above reasons mentioned on the side opposite the light source Surface that comprises at least one Fresnel element 9.
- a light guide disk 8 has a Fresnel element on the surface opposite the light source 2 10 have.
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
- Fig. 1
- zeigt eine erste Ausführungsform der Erfindung mit einer Reihe LEDs und einem Lichtleiterstab.
- Fig. 2
- zeigt eine zweite Ausführungsform der Erfindung mit zwei Reihen LEDs und einem Lichtleiterstab.
- Fig. 3
- zeigt eine dritte Ausführungsform der Erfindung mit einem Lichtleiterstab mit integrierter Fresnel-Optik.
- Fig. 4
- zeigt eine vierte Ausführungsform der Erfindung mit einer Reihe LEDs und einer Lichtleiterscheibe, vor der eine Lichtleiterscheibe angeordnet ist.
- Fig. 5
- zeigt eine fünfte Ausführungsform der Erfindung mit zwei Reihen LEDs, einer Lichtleiterscheibe und zwei Lichtleiterstäben.
- 1
- Gehäuse
- 2
- Lichtquelle
- 3
- Lichtscheibe
- 4
- erste Reihe LEDs
- 5
- zweite Reihe LEDs
- 6
- erster Lichtleiterstab
- 7
- zweiter Lichtleiterstab
- 8
- Lichtleiterscheibe
- 9
- Fresnel-Optik des Lichtleiterstabes
- 10
- Fresnel-Optik der Lichtleiterscheibe
Claims (6)
- Leuchte mit einer Lichtquelle (2) in einem Gehäuse (1) mit einer Lichtscheibe (3) dadurch gekennzeichnet, daß
ein Lichtleiterelement (6, 7, 8) aus einem transparenten Medium zwischen der Lichtquelle (2) und der Lichtscheibe (3) angeordnet ist und die Lichtquelle (2) mehrere nebeneinander angeordnete lichtemittierende Dioden (4, 5) umfaßt. - Leuchte nach Anspruch 1,
dadurch gekennzeichnet, daß
die Lichtquelle (2) mehrere Reihen mit jeweils nebeneinander angeordneten lichtemittierenden Dioden (4, 5) umfaßt. - Leuchte nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
das Lichtleitelement (6, 7, 8) ein Lichtleiterstab (6, 7) aus einem transparenten Medium ist, der auf der Seite, die der Lichtquelle (2) gegenüberliegt, eine Oberfläche aufweist, die mindestens ein Fresnel-Element (9) umfaßt. - Leuchte nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
das Lichtleitelement (6, 7, 8) eine Lichtleiterscheibe (8) aus einem transparenten Medium ist, die auf der Seite, die der Lichtquelle (2) gegenüberliegt, eine Oberfläche aufweist, die mindestens ein Fresnel-Element (10) umfaßt. - Leuchte nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
das Lichtleitelement (6, 7, 8) zwei parallele Lichtleiterstäbe (6, 7) aus einem transparenten Medium umfaßt. - Leuchte nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, daß
das Lichtleitelement (6, 7, 8) mindestens einen Lichtleiterstab (6, 7) aus einem transparenten Medium und eine Lichtleiterscheibe (8) zwischen Lichtleiterstab (6, 7) und der Lichtquelle (2) umfaßt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19946079A DE19946079B4 (de) | 1999-09-25 | 1999-09-25 | Signalleuchte eines Kraftfahrzeugs |
DE19946079 | 1999-09-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1087175A2 true EP1087175A2 (de) | 2001-03-28 |
EP1087175A3 EP1087175A3 (de) | 2002-10-30 |
Family
ID=7923343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00119468A Withdrawn EP1087175A3 (de) | 1999-09-25 | 2000-09-15 | Signalleuchte für ein Kraftfahrzeug |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1087175A3 (de) |
DE (1) | DE19946079B4 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10115806A1 (de) * | 2001-03-30 | 2002-10-10 | Bayerische Motoren Werke Ag | Außenleuchtvorrichtung für die Außenbeleuchtung eines Fahrzeugs |
DE10144473A1 (de) * | 2001-09-10 | 2003-03-27 | Hella Kg Hueck & Co | Leuchte für Fahrzeuge |
DE10144478A1 (de) * | 2001-09-10 | 2003-03-27 | Hella Kg Hueck & Co | Leuchte für Fahrzeuge |
FR2831943A1 (fr) * | 2001-11-02 | 2003-05-09 | Koito Mfg Co Ltd | Lampe de vehicule a diodes photoemissives |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10062153A1 (de) * | 2000-12-14 | 2002-06-20 | Volkswagen Ag | Kraftfahrzeugleuchte mit Leuchtdioden |
DE10314257A1 (de) * | 2003-03-29 | 2004-10-07 | Hella Kg Hueck & Co. | Leuchte für Fahrzeuge |
DE102004049318A1 (de) * | 2004-10-09 | 2006-04-13 | Hella Kgaa Hueck & Co. | Leuchteinheit für Fahrzeuge |
DE102005040100B4 (de) * | 2005-08-24 | 2022-02-03 | Bayerische Motoren Werke Aktiengesellschaft | Fahrzeugleuchte mit einem ersten Leuchtenfunktionsbereich und wenigstens einem weiteren Leuchtenfunktionsbereich in Trennbereichen zwischen durchleuchtbaren, lichtstreuende Mittel aufweisenden Leuchtkörpern für den ersten Leuchtenfunktionsbereich |
DE102011000022B4 (de) * | 2011-01-04 | 2019-06-27 | HELLA GmbH & Co. KGaA | Leuchteinheit für Fahrzeuge mit einem Scheibenkörper vor einem flächigen Lichtleitelement |
DE102013104176B4 (de) * | 2013-04-25 | 2022-08-04 | HELLA GmbH & Co. KGaA | Beleuchtungsvorrichtung für Fahrzeuge mit einem langgestreckten Lichtleiter, der in seiner Längsrichtung örtlich veränderbar beleuchtet wird |
DE102014110399A1 (de) * | 2014-07-23 | 2016-01-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Beleuchtungseinrichtung |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996013687A1 (en) | 1994-10-26 | 1996-05-09 | Philips Electronics N.V. | Signalling system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61113290A (ja) * | 1984-11-08 | 1986-05-31 | Sanyo Electric Co Ltd | 線状光源 |
GB2288658B (en) * | 1994-04-19 | 1998-04-22 | Koito Mfg Co Ltd | Vehicular marker lamp lens compatible with two different kinds of light sources |
DE4427606A1 (de) * | 1994-08-04 | 1996-02-08 | Porsche Ag | Signalleuchte für Kraftfahrzeuge |
FR2738621B1 (fr) * | 1995-09-11 | 1997-11-28 | Valeo Vision | Feu de signalisation a plusieurs sources alignees, notamment feu stop complementaire pour vehicule automobile |
DE19547861A1 (de) * | 1995-12-21 | 1997-06-26 | Reitter & Schefenacker Gmbh | Rückleuchte für Fahrzeuge, vorzugsweise Kraftfahrzeuge |
DE19646042B4 (de) * | 1996-11-08 | 2006-11-16 | Automotive Lighting Reutlingen Gmbh | Fahrzeug-Beleuchtungseinrichtung |
WO1999008042A1 (en) * | 1997-08-07 | 1999-02-18 | Decoma International Inc. | Thin light managing system for directing and distributing light from one or more light sources and method for making optics structures for use in the system |
PT1005619E (pt) * | 1997-08-12 | 2002-05-31 | Breault Res Organization Inc | Elemento de lente birreflectora |
DE19803537A1 (de) * | 1998-01-30 | 1999-08-05 | Hella Kg Hueck & Co | Leuchte für Fahrzeuge |
-
1999
- 1999-09-25 DE DE19946079A patent/DE19946079B4/de not_active Expired - Fee Related
-
2000
- 2000-09-15 EP EP00119468A patent/EP1087175A3/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996013687A1 (en) | 1994-10-26 | 1996-05-09 | Philips Electronics N.V. | Signalling system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10115806A1 (de) * | 2001-03-30 | 2002-10-10 | Bayerische Motoren Werke Ag | Außenleuchtvorrichtung für die Außenbeleuchtung eines Fahrzeugs |
DE10144473A1 (de) * | 2001-09-10 | 2003-03-27 | Hella Kg Hueck & Co | Leuchte für Fahrzeuge |
DE10144478A1 (de) * | 2001-09-10 | 2003-03-27 | Hella Kg Hueck & Co | Leuchte für Fahrzeuge |
FR2831943A1 (fr) * | 2001-11-02 | 2003-05-09 | Koito Mfg Co Ltd | Lampe de vehicule a diodes photoemissives |
Also Published As
Publication number | Publication date |
---|---|
DE19946079B4 (de) | 2008-08-14 |
EP1087175A3 (de) | 2002-10-30 |
DE19946079A1 (de) | 2001-03-29 |
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