EP3966495A1 - Scheinwerfer für fahrzeuge - Google Patents
Scheinwerfer für fahrzeugeInfo
- Publication number
- EP3966495A1 EP3966495A1 EP20800796.3A EP20800796A EP3966495A1 EP 3966495 A1 EP3966495 A1 EP 3966495A1 EP 20800796 A EP20800796 A EP 20800796A EP 3966495 A1 EP3966495 A1 EP 3966495A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- focal point
- light source
- headlight according
- light
- 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
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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
- F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
-
- 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 headlight for vehicles with a light source, with a reflector arrangement containing at least one reflector module with a first reflector which has a reflector surface which has a first focal point and a second focal point, the light source being arranged in the first focal point, and with a second reflector which has a reflector surface which has a focal point coinciding with the second focal point of the first reflector.
- a headlight for vehicles which has a light source and a reflector arrangement.
- the reflector arrangement has a first reflector with an ellipsoidal surface.
- the first reflector is assigned directly to the light source.
- the reflector arrangement also has a second reflector with a paraboloid-shaped surface, which is arranged in front of the first reflector in the light emission direction.
- the light source is arranged in a first focal point of the first reflector.
- a second focal point of the first reflector coincides with one Focus of the second reflector together.
- the light source is shifted rotationally and translationally to the first focal point of the first reflector.
- the light reflected at the first reflector leaves the reflector at an edge plane facing the light source.
- a disadvantage of the known headlight is that precise adjustment of the light source is required. Furthermore, the light source can be seen at an acute viewing angle, so that a bright point can be perceived on a lens covering a housing of the headlight.
- the headlight disadvantageously requires a relatively large installation depth.
- the object of the present invention is to develop a headlight for vehicles with only one reflector arrangement for deflecting the light in such a way that a predetermined light distribution with a light / dark boundary is generated in a space-saving manner, the light source not being visible from the outside.
- the invention in connection with the preamble of claim 1 is characterized in that the first reflector is arranged in the main emission direction in front of the light source, the reflector surface of the first reflector is arched with a first opening section arranged opposite to the main emission direction and with a second opening section arranged offset by 90 ° to the first opening section and pointing in the direction of the second reflector, that the reflector surface of the second reflector has free-form components, such that light incident on the reflector surface of the second reflector is reflected in such a way that a light distribution with a predetermined light / dark boundary is generated.
- the particular advantage of the headlight according to the invention is that a predetermined light distribution with a light / dark boundary can be generated in a space-saving manner, a light source being completely shielded from the outside by a first reflector of the reflector arrangement for the viewer. This reduces unwanted glare.
- the light / dark border is brought about solely by the second reflector. For this purpose, it has a reflector surface with free-form components, by means of which the desired light distribution can be generated.
- the free-form portions are formed by faceting, with a plurality of facet elements arranged in the millimeter range being distributed over the parabolic surface of the second reflector.
- the light emitted by the light source is thus scattered by the second reflector, while it is bundled by the first reflector.
- a main axis of the light source runs in the main emission direction of the headlight.
- the light emitted by the light source is deflected by 90 ° by means of the first reflector.
- Another 90 ° deflection takes place by means of the second reflector.
- the first and second focal points of the first reflector run on a straight line inclined to a vertical.
- the headlight has a small overall depth.
- a rear edge of the first reflector and / or a rear edge of the second reflector is arranged in the main emission direction in front of the first focal point of the first reflector, so that there is sufficient space between the light source and the reflectors. Heat convection can hereby be improved.
- a front edge of the second reflector is arranged behind a front edge of the first reflector and preferably a rear edge of the second reflector is arranged in front of the rear edge of the first reflector in the main emission direction. In this way, a more compact reflector arrangement with a small overall depth can advantageously be created.
- the first and second reflectors form a reflector module.
- the headlight has a number of reflector modules arranged in pairs one above the other, each of which is of identical design. In this way, the illuminance can advantageously be increased with a small installation depth.
- a plurality of reflector modules arranged in pairs is provided so that the illuminance can be increased further.
- the reflector modules are integrally connected to one another, whereby they preferably form a single metal-coated injection-molded part. This reduces the manufacturing costs.
- the first reflector is arched in the main emission direction and the second reflector is arched against the main emission direction. This advantageously leads to improved ventilation or increased heat convection around the light source.
- the temperatures can be kept low as there are no lenses near the light source.
- the light source can advantageously be operated at an increased output. Further advantages of the invention emerge from the further subclaims.
- FIG. 1 shows a front view of a headlight according to the invention with a reflector arrangement containing six reflector modules
- FIG. 2 shows a side view of a reflector module with light rays
- a headlight according to the invention is preferably used as a worklight which is used, for example, for agricultural and construction machinery, snow sleds, and ships and boats.
- the worklight described below is suitable for reducing glare, since a reflector arrangement 1 is provided which completely shields a light source 2 of the worklight.
- the headlight has a housing 3 in which reflector modules 4 arranged one above the other are arranged in pairs. In the present work headlights three pairs of reflector modules 4 are arranged horizontally next to one another.
- the reflector modules 4 are integrally connected to one another.
- the reflector modules 4 are formed by a single metal-coated injection-molded part.
- the reflector arrangement 1 thus has a circumferential edge which surrounds the six reflector modules 4.
- the reflector modules 4 are each connected to the frame and / or adjacent reflector modules on an upper side and an underside as well as on upright edge sides.
- the housing 3 has a front edge 5 which forms an opening which is closed by a transparent cover plate (not shown). At the rear of the edge 4 of the housing 3, cooling fins (not shown) are connected.
- the reflector arrangement 1 has a total of six reflector modules 4, where the reflector modules 4 are arranged in pairs in the vertical direction.
- the reflector modules 4 each have a first reflector 6 containing an ellipsoidal reflector surface 7 and a second reflector 8 with a paraboloidal reflector surface 9.
- the first reflector 6 is arranged in front of the light source 2 in the main emission direction H of the headlight.
- the light source 2 can be designed as an LED light source which is mounted on a support element 10.
- the support element 10 is preferably designed as a printed circuit board.
- the light source 2 is preferably designed as a TOP LED light source which emits light 11 normal to the circuit board 10. A main axis A of the light source 2 thus runs in the main emission direction H.
- the second reflector 8 is arranged in front of the same in the light emission direction 12 of the first reflector 6, preferably at a distance a from the first reflector 6.
- a lateral edge plane 13 of the first reflector 6, on which the light 11 emits from the first reflector 6, is arranged at a distance a from an entry plane 14 of the second reflector 8.
- a gap 15 is thus formed between the first reflector 6 and the second reflector 8. Since the light source 2 is shielded by the first reflector 6, there is no direct light emission from the light source 2 to the cover pane.
- the light source 2 is at a first focal point f
- a second focal point f 2 of the ellipsoidal surface 7 of the first reflector 6 coincides with the focal point f ß of the reflector surface 9 of the second reflector 8.
- the first reflector 6 essentially serves to focus the light 11 and to shield the light source 2, while the second reflector 8 serves to scatter the light 11 in accordance with a predetermined light distribution 16 with a light / dark boundary 17.
- the reflector surface 9 of the second reflector 8 has free-form components, so that the predetermined light distribution 16 with the light / dark boundary 17 is generated.
- the free-form parts are formed by a faceting 18.
- the second reflector 8 has a faceting 18 with a plurality of facet elements 19, which are arranged distributed over the surface of the parabolic base 9 of the second reflector 8. These facet elements 19 have a dimension in the millimeter range and cause light to be shaped in order to generate the predetermined light distribution 16.
- the curved first reflector 6 has a first opening section 22 arranged opposite to the main emission direction H of the headlamp and an opening section 23 offset by 90 ° to the first opening section 22 and pointing in the direction of the second reflector 8.
- the second reflector 8 has a curvature so that an opening thereof points in the main emission direction H of the headlight.
- the first reflector 6 has a rear edge 24 and the second reflector 8 to a rear edge 25 which run in each case displayed in a same or in a in Figure 2 is not the same vertical plane V Hi and V 2, wherein the vertical plane V Hi and V H 2 are arranged in the main emission direction H in front of the first focal point fi of the first reflector 6.
- the rear edge 25 of the second reflector 8 is arranged in the main emission direction H in the present exemplary embodiment in front of the rear edge 24 of the first reflector 6. Both the first reflector 6 and the second reflector 8 are thus arranged at a distance from the light source 2 in the main emission direction H. In this way, improved ventilation in the area of the light source 2 and thus improved thermal convection can take place.
- first focal point fi and the second focal point f 2 of the first reflector 6 are arranged on a straight line g inclined to a vertical plane V.
- the straight line g is thus arranged inclined to the rear by the acute angle f from the vertical plane V.
- a front edge 20 of the second reflector is arranged in the main emission direction H behind a front edge 21 of the first reflector 6, so that the structural depth is determined by the first reflector 6.
- the light / dark boundary 17 is arranged symmetrically to a vertical V.
- the number of reflector modules 4 can vary.
- the headlight can also have only a single pair of reflector modules 4 or a single reflector module 4.
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)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019129100.3A DE102019129100A1 (de) | 2019-10-29 | 2019-10-29 | Scheinwerfer für Fahrzeuge |
| PCT/EP2020/078990 WO2021083672A1 (de) | 2019-10-29 | 2020-10-15 | Scheinwerfer für fahrzeuge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3966495A1 true EP3966495A1 (de) | 2022-03-16 |
| EP3966495B1 EP3966495B1 (de) | 2023-03-22 |
Family
ID=73059817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20800796.3A Active EP3966495B1 (de) | 2019-10-29 | 2020-10-15 | Scheinwerfer für fahrzeuge |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US11572997B2 (de) |
| EP (1) | EP3966495B1 (de) |
| AU (1) | AU2020374239B2 (de) |
| CA (1) | CA3111958C (de) |
| DE (1) | DE102019129100A1 (de) |
| FI (1) | FI3966495T3 (de) |
| PT (1) | PT3966495T (de) |
| WO (1) | WO2021083672A1 (de) |
| ZA (1) | ZA202104706B (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3118120B1 (fr) * | 2020-12-18 | 2023-05-05 | Valeo Vison Service Ip | Projecteur automobile avec plusieurs modules d’éclairage sur une platine commune inclinée. |
| USD1010169S1 (en) * | 2021-01-18 | 2024-01-02 | Arb Corporation Limited | Driving light |
| EP4357666A1 (de) * | 2022-10-21 | 2024-04-24 | Hella Autotechnik Nova, s.r.o. | Kraftfahrzeugleuchte |
| CN118257981A (zh) * | 2022-12-27 | 2024-06-28 | 法雷奥照明公司 | 照明模块、灯装置以及车辆 |
| USD1057229S1 (en) * | 2023-04-21 | 2025-01-07 | Lucidity Enterprise Co., Ltd. | Vehicle lamp |
| EP4621285A1 (de) * | 2024-03-21 | 2025-09-24 | ZKW Group GmbH | Beleuchtungsvorrichtung für ein kraftfahrzeug |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4123338B2 (ja) | 2002-02-01 | 2008-07-23 | スタンレー電気株式会社 | 灯具 |
| DE102010033707A1 (de) * | 2010-08-06 | 2012-02-09 | Hella Kgaa Hueck & Co. | Optikanordnung für einen Scheinwerfer eines Fahrzeugs |
| AT519119B1 (de) * | 2016-11-22 | 2018-04-15 | Zkw Group Gmbh | Beleuchtungseinrichtung eines kraftfahrzeugscheinwerfers |
| DE102016125676A1 (de) | 2016-12-23 | 2018-06-28 | Automotive Lighting Reutlingen Gmbh | LED-Modul und Beleuchtungseinrichtung für ein Kraftfahrzeug mit mehreren solcher LED-Module |
| US11162660B2 (en) * | 2017-10-10 | 2021-11-02 | Nordic Lights Ltd. | Working light |
| FR3077367B1 (fr) * | 2018-01-31 | 2021-04-16 | Valeo Vision | Module lumineux bi-fonction avec surface eclairee commune |
| DE102018201980A1 (de) | 2018-02-08 | 2019-08-08 | Bayerische Motoren Werke Aktiengesellschaft | Beleuchtungsvorrichtung für ein Kraftfahrzeug |
| JP7171413B2 (ja) * | 2018-12-18 | 2022-11-15 | スタンレー電気株式会社 | 車両用灯具 |
| JP7265922B2 (ja) * | 2019-04-22 | 2023-04-27 | スタンレー電気株式会社 | 車両用前照灯 |
-
2019
- 2019-10-29 DE DE102019129100.3A patent/DE102019129100A1/de not_active Withdrawn
-
2020
- 2020-10-15 WO PCT/EP2020/078990 patent/WO2021083672A1/de not_active Ceased
- 2020-10-15 US US17/287,688 patent/US11572997B2/en active Active
- 2020-10-15 PT PT208007963T patent/PT3966495T/pt unknown
- 2020-10-15 FI FIEP20800796.3T patent/FI3966495T3/fi active
- 2020-10-15 EP EP20800796.3A patent/EP3966495B1/de active Active
- 2020-10-15 AU AU2020374239A patent/AU2020374239B2/en active Active
- 2020-10-15 CA CA3111958A patent/CA3111958C/en active Active
-
2021
- 2021-07-06 ZA ZA2021/04706A patent/ZA202104706B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP3966495B1 (de) | 2023-03-22 |
| AU2020374239A1 (en) | 2021-05-27 |
| AU2020374239B2 (en) | 2021-09-30 |
| CA3111958A1 (en) | 2021-04-29 |
| US11572997B2 (en) | 2023-02-07 |
| ZA202104706B (en) | 2021-09-29 |
| DE102019129100A1 (de) | 2021-04-29 |
| US20220268414A1 (en) | 2022-08-25 |
| WO2021083672A1 (de) | 2021-05-06 |
| FI3966495T3 (fi) | 2023-06-21 |
| CA3111958C (en) | 2022-07-12 |
| PT3966495T (pt) | 2023-04-10 |
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