EP2223010A1 - Headlight for vehicles - Google Patents
Headlight for vehiclesInfo
- Publication number
- EP2223010A1 EP2223010A1 EP08846610A EP08846610A EP2223010A1 EP 2223010 A1 EP2223010 A1 EP 2223010A1 EP 08846610 A EP08846610 A EP 08846610A EP 08846610 A EP08846610 A EP 08846610A EP 2223010 A1 EP2223010 A1 EP 2223010A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- led
- optical unit
- opening angle
- module
- 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.)
- Granted
Links
- 238000009826 distribution Methods 0.000 claims abstract description 45
- 230000003287 optical effect Effects 0.000 claims abstract description 32
- 239000000758 substrate Substances 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 5
- 238000013507 mapping Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
-
- 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 headlamp for vehicles with a light module containing at least one LED light source and an optical unit.
- a headlamp for vehicles which comprises on the one hand a first light module containing a number of LED light sources and an upstream optical unit and on the other hand a second light module containing a number of LED light sources and an upstream optical unit ,
- the LED light sources are each arranged on a substrate combined to form an LED field. Due to the fact that the optical units have a different imaging characteristic, light bundles with differently sized light spots can be generated in the vehicle apron, so that a predetermined light distribution, such as low-beam distribution or motorway light distribution, can be generated by superimposing them. Since at least two optical units are required to generate a single light distribution, the headlight on a relatively large amount of space.
- a headlamp for vehicles which has a number of combined on an LED field LED light sources.
- the LED light sources of the LED field can be controlled individually by means of a control device, so that depending on sensor data of a sensor located in the vehicle front panel detecting sensor areas of a predetermined light distribution can be omitted, an unwanted dazzling of located in the vehicle apron further road user prevent.
- Object of the present invention is to develop a headlamp for vehicles such that the cost of generating the vehicle environment comprising illuminating predetermined light distributions is reduced in particular while avoiding dazzling located in the vehicle apron objects.
- the invention in conjunction with the preamble of claim 1, characterized in that a first light module is configured such that a base light distribution can be generated, and that a second light module is formed such that a basic light distribution at least partially overlapping additional light distribution can be generated is.
- the particular advantage of the invention is that only a single light module is required to generate a light distribution.
- the light module has at least one LED light source and a single optical unit.
- the space required to generate a light distribution can thus be reduced, which has a favorable effect, in particular in the requirement for the generation of multiple light distributions.
- a first light module has at least one first LED light source and a first optical unit, such that a first light bundle with a relatively wide horizontal and / or vertical opening angle is emitted.
- a second light module has at least one LED light source and an optical unit, such that a second light bundle with a relatively narrow horizontal and / or vertical opening angle is emitted.
- the first light beam for generating a low-beam light distribution and the second light beam for generating a motorway light distribution and / or a dynamic curve light distribution can be used.
- the predetermined additional light distribution (motorway light distribution, cornering light function) can be switched to the low-beam light distribution generated by means of the first light module by driving the corresponding LED light sources.
- the type of additional light distribution determines the number and position of the LED light sources driven in the LED field.
- a sensor device for detecting objects located in the vehicle apron and a control device for controlling the LED light sources of the second light module, so that the accessory switching an additional light distribution by controlling the corresponding LED light sources of the second light module in dependence on the detected by means of the sensor device current position of the object in the vehicle apron takes place.
- the greatest possible illumination of the vehicle apron can take place without an oncoming road user or preceding road user being dazzled.
- Fig. 1 is a schematic representation of a headlight according to the invention.
- Fig. 2 is a schematic representation of several light distributions on a measuring screen.
- a headlight for vehicles has a housing 1, in which a first light module 2 containing an LED light source 3 and a first optical unit 4 for generating a basic light distribution 5 are arranged.
- the LED light source 3 may be formed as an LED chip, which is arranged on a substrate 19.
- the first optical unit 4 is arranged in the light emission direction 6 in front of the LED light source 3. According to an alternative embodiment, not shown, the first optical unit 4 may also be arranged in the region of the substrate 19 carrying the LED light source 3.
- a second light module 7 is provided with a plurality of LED light sources 3 and a second upstream optical unit 8 for generating at least one additional light distribution.
- a first group of LED light sources 3 is combined to form a first LED field 9, so that, in cooperation with the second optical unit 8, it can be used as an accessory.
- a distribution of light distribution 10 can be generated.
- Adjacent to the first LED field 9, a second LED field 11 is arranged, which has at least one LED light source 3, so that in cooperation with the second optical unit 8 as a supplementary light distribution a curve light function 12 can be generated.
- a control device 13 In front of the first light module 2 and the second light module 7 is a control device 13, by means of which the LED light sources 3 of the first light module 2 and the second light module 7 are individually controllable.
- a sensor device 14 On the input side of the control device 13, a sensor device 14 is provided for detecting the position of an object located in the vehicle apron. The sensor data provided by the sensor device 14 are processed in the control device 13, wherein in dependence on the detected position of the object in the vehicle apron, the position of the additional light distribution 10, 12 is variable.
- a switching device 15 On the input side of the control device 13, a switching device 15 is provided, which is arranged for example in the cockpit of the vehicle for manually switching on and off predetermined light functions.
- the first light module 2 has only a single LED light source 3, wherein in cooperation with the first optical unit 4, a first light beam 16 is emitted at a solid angle having a relatively wide horizontal opening angle ⁇ i and vertical P 1 opening angle (critical angle).
- the horizontal opening angle Ci 1 is at least 16 °
- the vertical opening angle ßi at least 5 °.
- the horizontal opening angle ⁇ ⁇ is approximately 20 °
- the vertical opening angle ⁇ i is approximately 10 ° or in the region of a 15 ° rise of a light-dark boundary HDG shown in FIG. 2 on a measuring screen 21 of the low beam distribution 5 15 °.
- this allows a relatively large portion of the vehicle apron to be illuminated.
- Horizontal opening angle is the angle range in the horizontal direction, under which the corresponding light beam is emitted.
- the vertical opening angle is understood to be the angle at which the corresponding light beam is emitted in a vertical plane.
- the second light module 7 has LED light sources 3 which, in cooperation with the second optical unit 8, emit another light bundle in a solid angle which has a relatively narrow horizontal opening angle ⁇ 2 , ⁇ 3 and / or vertical opening angle ⁇ 2> ⁇ 3.
- relatively light-intensive additional light functions can thereby be generated, which can be superimposed on the low-beam light distribution 5.
- the LED light sources 3 of the first LED array 9 interact with the second optical unit 8 in such a way that a second light bundle 17 for generating the highway light function 10 is emitted at a solid angle having a horizontal opening angle ⁇ 2 of at most 10 ° and a vertical opening angle ß 2 of at most 0.5 °, preferably 0.25 °.
- the LED light sources 3 of the second LED array 11 interact with the second optical unit 8 in such a way that a third light beam 18 is radiated at a solid angle having a horizontal opening angle 0: 3 of a maximum of 5 ° and a vertical opening angle ß 3 of maximum 0.5 °, preferably 0.25 °, for generating the cornering light function 12 has.
- the motorway light distribution 10 partially covers the low beam distribution 6 in an upper edge region 20, while the curve light distribution 12 completely covers the low beam distribution 5.
- the first LED array 9 and the second LED array 11 each have a plurality of LED light sources 3 arranged in a matrix, so that by controlling a row of LED light sources 3 on the measuring screen 21 a row-shaped (line-shaped) juxtaposition from each of the LED light sources 3 imaging light spots can be displayed.
- the LED light sources 3 of the second light module 7 are preferably designed as LED chips, which are preferably arranged on a common substrate 19.
- the predetermined at least one additional light function can be generated by driving the corresponding LED light sources 3.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007052744A DE102007052744A1 (en) | 2007-11-06 | 2007-11-06 | Headlights for vehicles |
PCT/EP2008/064983 WO2009059992A1 (en) | 2007-11-06 | 2008-11-05 | Headlight for vehicles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2223010A1 true EP2223010A1 (en) | 2010-09-01 |
EP2223010B1 EP2223010B1 (en) | 2020-04-29 |
Family
ID=40293887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08846610.7A Active EP2223010B1 (en) | 2007-11-06 | 2008-11-05 | Headlight for vehicles |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2223010B1 (en) |
DE (1) | DE102007052744A1 (en) |
WO (1) | WO2009059992A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012108309A1 (en) * | 2012-09-07 | 2014-03-13 | Hella Kgaa Hueck & Co. | Headlights for vehicles |
JP7393877B2 (en) * | 2019-05-24 | 2023-12-07 | スタンレー電気株式会社 | Vehicle lights |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19813032A1 (en) * | 1998-03-25 | 1999-09-30 | Bosch Gmbh Robert | Headlight system for vehicles for emitting variable light beams |
DE10153031C2 (en) * | 2001-10-26 | 2003-10-23 | Audi Ag | Vehicle headlights with individually and / or group-controlled electro-optical elements |
JP2004311101A (en) * | 2003-04-03 | 2004-11-04 | Koito Mfg Co Ltd | Vehicle head lamp and semiconductor light emitting element |
US20040263346A1 (en) * | 2003-06-27 | 2004-12-30 | Guide Corporation, A Delaware Corporation | Solid state adaptive forward lighting system |
JP4061251B2 (en) * | 2003-08-05 | 2008-03-12 | 株式会社小糸製作所 | Vehicle lighting |
JP4392786B2 (en) * | 2003-11-04 | 2010-01-06 | 株式会社小糸製作所 | Vehicle headlamp |
DE102004042092B4 (en) | 2004-08-30 | 2020-01-02 | HELLA GmbH & Co. KGaA | Method for controlling a light generating device for motor vehicles and device |
DE102005014754A1 (en) * | 2005-03-31 | 2006-10-05 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Car headlights |
DE102005030932B4 (en) * | 2005-06-30 | 2022-01-13 | HELLA GmbH & Co. KGaA | headlights for vehicles |
JP4535965B2 (en) * | 2005-08-16 | 2010-09-01 | 株式会社小糸製作所 | Vehicle lighting |
DE102005041234A1 (en) | 2005-08-31 | 2007-03-01 | Hella Kgaa Hueck & Co. | Headlight for vehicle, has optical units with characteristics in front of groups of sources in such a manner that different large light spots can be generated in traffic space by alternative switching on and off and/or dimming of sources |
DE102005049685A1 (en) * | 2005-10-14 | 2007-04-19 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Multifunction vehicle headlamp module, in particular for the front area of a vehicle |
-
2007
- 2007-11-06 DE DE102007052744A patent/DE102007052744A1/en not_active Withdrawn
-
2008
- 2008-11-05 WO PCT/EP2008/064983 patent/WO2009059992A1/en active Application Filing
- 2008-11-05 EP EP08846610.7A patent/EP2223010B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009059992A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009059992A1 (en) | 2009-05-14 |
DE102007052744A1 (en) | 2009-05-07 |
EP2223010B1 (en) | 2020-04-29 |
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