EP0972983B1 - Dipping headlamp having a pivotable reflecting segment - Google Patents
Dipping headlamp having a pivotable reflecting segment Download PDFInfo
- Publication number
- EP0972983B1 EP0972983B1 EP99890217A EP99890217A EP0972983B1 EP 0972983 B1 EP0972983 B1 EP 0972983B1 EP 99890217 A EP99890217 A EP 99890217A EP 99890217 A EP99890217 A EP 99890217A EP 0972983 B1 EP0972983 B1 EP 0972983B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pivot
- headlight
- segment
- dimmable
- reflector
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
-
- 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
- F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
-
- 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
- F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
- F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
Definitions
- the invention relates to a dipped-beam headlamp with a reflective pivot segment in the region of the reflector edge.
- Another object of the invention is to increase the luminous efficacy of the pivoting segment.
- the invention provides that at least one zone is provided on a generally parabolic reflector, which forms in horizontal section at least approximately a part of an ellipse in one focal point is a light source and their other focus on the surface of a vertical axis pivotable pivoting segment is located.
- the height of the zone with elliptical horizontal section corresponds approximately to the height of the pivoting segment.
- pivoting segment is a separate component from the reflector.
- the elliptical area is tuned to the pivot segment, that in the Nulischwenk ein the Swivel segment near edge beam of the ellipse area parallel to the optical axis and in the maximum pivot position of the schwenksegmentfeme edge beam of the ellipse area at right angles to the optical axis.
- the pivoting segment can be planar or have a curved surface as well as scattering elements, in particular vertical grooves.
- the actuation of the pivoting segment is not restricted and may be e.g. mechanically, hydraulically or preferably electronically via sensors and processors, which primarily detect the curve radius.
- Figure 1 is a horizontal section in the plane of the lamp through a light collecting reflector / pivoting segment combination and Figures 2 to 4 show its practical realization, in which Figure 2 is an enlarged cross-sectional view Fig. 3 is a front view and Fig. 4 is a horizontal section of the corresponding combination headlamp insert is from which an automatic headlamp leveling shows.
- a horizontal portion AB of a generally parabolic in horizontal section reflector is formed as a section of an ellipse, in one focal point of the associated lamp L and in the other focal point a reflective, about a vertical axis 12 pivotable pivot segment 14 is arranged.
- the reflector has, so to speak, two floors as well as steps and transitions from the parabolic area to the ellipse area.
- the marginal rays relating to the starting point A and the end point B of the ellipse region are related to a zero position and a maximum deflection position of the Swivel segments 14 located.
- the zero position of the end point B is shown parallel to the optical axis OA, the light beam ⁇ lights more in the direction of travel.
- the maximum deflection position the starting point A is imaged at right angles to the optical axis OA, the light beam ⁇ lights up more to the side.
- a range of 90 ° can thus be illuminated in the illustrated embodiment.
- the pivoting angle of the pivoting segment 14 can be selected as desired.
- the floor with elliptical horizontal section thus aims at the pivot segment 14, the parabolic area gives the basic light distribution and the transition zones, which in the horizontal section of Fig. 1, the curve sections AC and BD serve the closed appearance of the reflector for the viewer.
- the height of the area with elliptical horizontal section can be chosen so that the parabolic surface makes up about 2/3 of the reflector surface, as well as the elliptical area plus the transition zones the rest. This would for a H7 lamp a luminous flux distribution Parabolic area: ellipse area: transition area of 400: 150: 50 result.
- the vertical section results in open spaces.
- the basic structure of the vehicle lighting unit shown in FIGS. 2-4 is as follows: A provided with retaining tabs 2 frame 1 carries a cover 3 and has in the turn signal area on a rear wall 4, in which the socket for the turn signal is freely accessible. Furthermore, the frame 1 has two windows 5, behind which a double headlamp unit 6 is arranged, which is pivotable relative to a support bracket 7 of the frame 1.
- the support bracket 7 has a ball head bearing 8, about which the double headlight unit 6 is pivotable, for which purpose a sliding pin drive 9 is mounted on the support bracket 7, which engages via a ball and socket connection 10 on the double headlight unit 6. In this way, automated headlight range adjustment can be carried out in the usual way. (Of the third pivot point is arranged laterally on the double headlamp unit 6 and not shown).
- the double headlight unit 6 is connected via a sealing bellows 11 made of elastomeric material with the frame 1 and has no rear cover, so that the sockets for the respective lamps are directly accessible. This offers over previous designs a much reduced space requirements and greatly improved ease of use and greatly improved sauceabstrahlschkeit.
- a drive motor 15 is fixedly connected to the double headlight unit 6, which can pivot about a pinion 16 in the auxiliary reflector segment 14 about an axis 12 in the Abstrahlweg of the Abblertztreflektors 13, which serves to illuminate the inside curve apron.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Aerials With Secondary Devices (AREA)
- Golf Clubs (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
Description
Die Erfindung betrifft einen Abblendlichtscheinwerfer mit einem reflektierenden Schwenksegment im Bereich des Reflektorrands.The invention relates to a dipped-beam headlamp with a reflective pivot segment in the region of the reflector edge.
Eine derartige Konstruktion ist aus der DE-OS 44 19 365 bekannt, wo durch Wegklappen eines randständigen Reflektorabschnitts eine andere Lichtverteilung erzielbar ist und zwar dadurch, daß ein Zusatzreflektor vorgesehen ist, der erst Licht erhält, wenn der Reflektorabschnitt weggeklappt ist. Im weggeklappten Zustand erhält der Reflektorabschnitt kein Licht mehr.Such a construction is known from DE-OS 44 19 365, where a different light distribution can be achieved by folding away a marginal reflector portion and that fact that an additional reflector is provided, which only receives light when the reflector portion is folded away. In the folded-away state, the reflector section no longer receives light.
Erfindungsgemäß wird nunmehr vorgeschlagen, einen klappbaren Reflektorabschnitt nicht aus dem Strahlengang, sondern in den Strahlengang hineinzuklappen, um damit Licht zur optischen Achse hin zu konvergieren und so das Innenkurvenvorfeld auszuleuchten. In diesem Zusammenhang war bekannt, Scheinwerfer als Ganzes lenksteuerungsabhängig mitzuschwenken.According to the invention, it is now proposed to fold a hinged reflector section not out of the beam path, but into the beam path in order to converge light toward the optical axis and thus to illuminate the inner curve apron. In this context, it was known to pivot headlamps as a whole steering control dependent.
Ein weiteres Ziel der Erfindung ist, die Lichtausbeute des Schwenksegments zu erhöhen. Zu diesem Zweck ist erfindungsgemäß vorgesehen, daß an einem allgemein parabolischen Reflektor zumindest eine Zone vorgesehen ist, die im Horizontalschnitt zumindest annäherungsweise einen Teil einer Ellipse bildet, in deren einem Brennpunkt sich eine Lichtquelle befindet und deren anderer Brennpunkt auf der Oberfläche des um eine vertikale Achse schwenkbaren Schwenksegments liegt.Another object of the invention is to increase the luminous efficacy of the pivoting segment. For this purpose, the invention provides that at least one zone is provided on a generally parabolic reflector, which forms in horizontal section at least approximately a part of an ellipse in one focal point is a light source and their other focus on the surface of a vertical axis pivotable pivoting segment is located.
Dabei entspricht vorzugsweise die Höhe der Zone mit elliptischen Horizontalschnitt etwa der Höhe des Schwenksegments.Preferably, the height of the zone with elliptical horizontal section corresponds approximately to the height of the pivoting segment.
Bevorzugt ist weiterhin, daß das Schwenksegment ein vom Reflektor getrennter Bauteil ist.It is further preferred that the pivoting segment is a separate component from the reflector.
Als weiteres Kennzeichen der Erfindung kann vorgesehen sein, daß der Ellipsenbereich so auf das Schwenksegment abgestimmt ist, daß in der Nulischwenkstellung der schwenksegmentnahe Randstrahl des Ellipsenbereichs parallel zur optischen Achse und in der Maximalschwenkstellung der schwenksegmentfeme Randstrahl des Ellipsenbereichs im rechten Winkel zur optischen Achse verläuft.As a further feature of the invention can be provided that the elliptical area is tuned to the pivot segment, that in the Nulischwenkstellung the Swivel segment near edge beam of the ellipse area parallel to the optical axis and in the maximum pivot position of the schwenksegmentfeme edge beam of the ellipse area at right angles to the optical axis.
Das Schwenksegment kann planar sein oder eine gekrümmte Oberfläche haben sowie auch Streuelemente, wie insbesondere Vertikalriefen, aufweisen.The pivoting segment can be planar or have a curved surface as well as scattering elements, in particular vertical grooves.
Die Ansteuerung des Schwenksegments ist nicht eingeschränkt und kann z.B. mechanisch, hydraulisch oder vorzugsweise elektronisch über Sensoren und Prozessoren erfolgen, die vor allem den Kurvenradius erfassen.The actuation of the pivoting segment is not restricted and may be e.g. mechanically, hydraulically or preferably electronically via sensors and processors, which primarily detect the curve radius.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher beschrieben, in der Fig. 1 ein Horizontalschnitt in der Lampenebene durch eine Lichtsammelreflektor/Schwenksegmentkombination ist sowie die Fig. 2 bis 4 deren praktische Verwirklichung zeigen, wobei Fig. 2 eine vergrößerte Querschnittsansicht ist, aus der eine automatische Leuchtweitenverstellung hervorgeht, Fig. 3 eine Vordersicht und Fig. 4 ein Horizontalschnitt des entsprechenden Kombinationsscheinwerfereinsatzes ist.The invention will now be further described by way of example with reference to the accompanying drawings, in which: Figure 1 is a horizontal section in the plane of the lamp through a light collecting reflector / pivoting segment combination and Figures 2 to 4 show its practical realization, in which Figure 2 is an enlarged cross-sectional view Fig. 3 is a front view and Fig. 4 is a horizontal section of the corresponding combination headlamp insert is from which an automatic headlamp leveling shows.
Aus Fig. 1 erkennt man, daß ein Horizontalbereich AB eines allgemein im Horizontalschnitt parabolischen Reflektors als Abschnitt einer Ellipse ausgebildet ist, in deren einem Brennpunkt die zugehörige Lampe L und in deren anderem Brennpunkt ein reflektierendes, um eine Vertikalachse 12 schwenkbares Schwenksegment 14 angeordnet ist.From Fig. 1 it can be seen that a horizontal portion AB of a generally parabolic in horizontal section reflector is formed as a section of an ellipse, in one focal point of the associated lamp L and in the other focal point a reflective, about a
Man erkennt, daß der Reflektor sozusagen zwei Stockwerke aufweist sowie Stufen und Übergänge vom Parabolbereich zum Ellipsenbereich.It can be seen that the reflector has, so to speak, two floors as well as steps and transitions from the parabolic area to the ellipse area.
Die Randstrahlen betreffend den Anfangspunkt A und den Endpunkt B des Ellipsenbereichs sind bezüglich einer Nullstellung und einer Maximalablenkstellung des Schwenksegments 14 eingezeichnet. In der Nullstellung wird der Endpunkt B parallel zur optischen Achse OA abgebildet, das Lichtbündel α leuchtet mehr in Fahrtrichtung. In der Maximalablenkstellung wird der Anfangspunkt A im rechten Winkel zur optischen Achse OA abgebildet, das Lichtbündel α leuchtet mehr nach der Seite. Durch Schwenken des Schwenksegments 14 ist somit bei der dargestellten Ausführungsform ein Bereich von 90° ausleuchtbar. Selbstverständlich ist der Schwenkwinkel des Schwenksegments 14 je nach Wunsch wählbar.The marginal rays relating to the starting point A and the end point B of the ellipse region are related to a zero position and a maximum deflection position of the Swivel
Das Stockwerk mit elliptischem Horizontalschnitt zielt somit auf das Schwenksegment 14, der Parabolbereich ergibt die Grundlichtverteilung und die Übergangszonen, die im Horizontalschnitt von Fig. 1 die Kurvenabschnitte AC und BD ergeben, dienen dem geschlossenen Erscheinungsbild des Reflektors für den Betrachter. Die Höhe des Bereichs mit elliptischem Horizontalschnitt kann so gewählt werden, daß die Parabolfläche etwa 2/3 der Reflektoroberfläche ausmacht, sowie der elliptische Bereich plus den Übergangszonen den Rest. Dies würde für eine H7-Lampe eine Lichtstromverteilung Parabolbereich : Ellipsenbereich : Übergangsbereich von 400 : 150 : 50 ergeben.The floor with elliptical horizontal section thus aims at the
Im Vertikalschnitt ergeben sich Freiflächen.The vertical section results in open spaces.
Der grundsätzliche Aufbau der in den Fig. 2-4 dargestellten Kfz-Leuchteinheit ist wie folgt: Ein mit Haltelaschen 2 versehener Rahmen 1 trägt eine Abdeckscheibe 3 und weist im Blinkleuchtenbereich eine Rückwand 4 auf, in der die Fassung für die Blinkleuchte frei zugänglich sitzt. Weiterhin weist der Rahmen 1 zwei Fenster 5 auf, hinter denen eine Doppelscheinwerfereinheit 6 angeordnet ist, die gegenüber einer Tragkonsole 7 des Rahmens 1 verschwenkbar ist. Die Tragkonsole 7 weist eine Kugelkopflagerung 8 auf, um die die Doppelscheinwerfereinheit 6 verschwenkbar ist, wozu auf der Tragkonsole 7 ein Gleitzapfenantrieb 9 montiert ist, der über eine Kugelkopfverbindung 10 an der Doppelscheinwerfereinheit 6 angreift. Auf diese Weise kann in üblicher Weise eine automatisierte Leuchtweitenregulierung erfolgen. (Der dritte Anlenkpunkt ist seitlich an der Doppelscheinwerfereinheit 6 angeordnet und nicht dargestellt).The basic structure of the vehicle lighting unit shown in FIGS. 2-4 is as follows: A provided with
Die Doppelscheinwerfereinheit 6 ist über einen Dichtbalg 11 aus Elastomermaterial mit dem Rahmen 1 verbunden und hat keine rückwärtige Abdeckung, sodaß die Fassungen für die jeweiligen Lampen direkt zugänglich sind. Dies bietet gegenüber bisherigen Konstruktionen einen weitaus verringerten Raumbedarf und stark verbesserten Bedienungskomfort sowie stark verbesserte Wärmeabstrahlmöglichkeit.The
Unabhängig vom Abblendlichtscheinwerferreflektor 13 ist fest mit der Doppelscheinwerfereinheit 6 verbunden ein Antriebsmotor 15 vorgesehen, der über einen Ritzelbetrieb 16 im Zusatzreflektorsegment 14 um eine Achse 12 in den Abstrahlweg des Abblendlichtreflektors 13 hineinschwenken kann, das der Ausleuchtung des kurveninneren Vorfelds dient.Independently of the dipped
Claims (6)
- A dimmable headlight comprising a reflector having at least two focal points, a light source (L) which is located in an inner focal point, and a pivot-mounted reflecting segment,
characterized in that
said pivot-mounted segment (14) is located in a second, outer focal point and is adapted to pivot into the beam path of the headlight in accordance with the curve radius. - A dimmable headlight as defined in claim 1, characterized in that there is at least one zone of a mainly parabolic reflector (13) that forms, at least approximately, a portion (AB) of an ellipse in horizontal cross section, and said region has a light source (L) in one of its focal points while its other focal point lies on the surface of said pivot-mounted segment (14), which is capable of being pivoted about a vertical axis (12).
- A dimmable headlight as defined in claim 1 or claim 2, characterized in that the height of said zone having an elliptical horizontal cross section is approximately equal to the height of said pivot-mounted segment (14).
- A dimmable headlight as defined in any one of claims 1 to 3, characterized in that said pivot-mounted segment (14) is a component separate from said reflector (13).
- A dimmable headlight as defined in any one of claims 1 to 4, characterized in that said elliptical region (AB) is oriented toward said pivot-mounted segment (14) in such a way that, in the unpivoted position thereof, that peripheral ray (B) of the elliptical region which is near to said pivot-mounted segment runs parallel to the optical axis (OA) and, in the fully pivoted position thereof, that peripheral ray (A) of the elliptical region which is remote from said pivot-mounted segment runs at right angles to the optical axis.
- A dimmable headlight as defined in any one of claims 1 to 5, characterized in that said pivot-mounted segment (14) has light-scattering elements, particularly in the form of vertical fluting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT99890217T ATE321975T1 (en) | 1998-07-17 | 1999-07-01 | LOW BEAM HEADLIGHT WITH A REFLECTIVE SWIVEL SEGMENT |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT123998 | 1998-07-17 | ||
| AT0123998A AT500425B8 (en) | 1998-07-17 | 1998-07-17 | TILT LIGHT WITH A REFLECTIVE SWIVEL SEGMENT |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0972983A2 EP0972983A2 (en) | 2000-01-19 |
| EP0972983A3 EP0972983A3 (en) | 2001-07-04 |
| EP0972983B1 true EP0972983B1 (en) | 2006-03-29 |
Family
ID=3509622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99890217A Expired - Lifetime EP0972983B1 (en) | 1998-07-17 | 1999-07-01 | Dipping headlamp having a pivotable reflecting segment |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0972983B1 (en) |
| AT (2) | AT500425B8 (en) |
| DE (1) | DE59913281D1 (en) |
| ES (1) | ES2262304T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10016882A1 (en) * | 2000-04-05 | 2001-10-18 | Philips Corp Intellectual Pty | Lighting device has second reflector for at least partial optional direct/indirect deflection of light deflected from first reflector to first of two focal points to second focal point |
| AT500562B1 (en) * | 2003-10-28 | 2007-10-15 | Zizala Lichtsysteme Gmbh | VEHICLE HEADLIGHTS |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1520656A (en) * | 1967-02-28 | 1968-04-12 | Cibie Projecteurs | Advanced beam deflection projector |
| DE2523643C3 (en) * | 1975-05-28 | 1978-09-21 | Hans-Joachim 4010 Hilden Schurig | Reflector with adjustable beam angle |
| JPH0636321B2 (en) * | 1988-02-02 | 1994-05-11 | 株式会社小糸製作所 | Automotive lighting |
| US5023758A (en) * | 1989-11-13 | 1991-06-11 | General Electric Company | Single arc discharge headlamp with light switch for high/low beam operation |
| JPH076564Y2 (en) * | 1990-04-19 | 1995-02-15 | 株式会社小糸製作所 | Variable light distribution vehicle headlights |
| DE4418733A1 (en) * | 1994-05-28 | 1995-11-30 | Bosch Gmbh Robert | Car headlamp design |
| DE4419365B4 (en) * | 1994-06-03 | 2005-01-05 | Automotive Lighting Reutlingen Gmbh | Motor vehicle headlight with a reflector and an additional reflector sector |
| FR2727497A1 (en) * | 1994-11-30 | 1996-05-31 | Valeo Vision | BEAM EXTENSION PROJECTOR, PARTICULARLY FOR MOTOR VEHICLE |
| DE19634755B4 (en) * | 1996-08-28 | 2008-01-31 | Automotive Lighting Reutlingen Gmbh | Lighting device of a vehicle |
| FR2759651B1 (en) * | 1997-02-18 | 1999-03-19 | Renault | MOTOR VEHICLE PROJECTOR COMPRISING A REFLECTOR FRACTIONATED IN ORIENTABLE BLADES |
-
1998
- 1998-07-17 AT AT0123998A patent/AT500425B8/en not_active IP Right Cessation
-
1999
- 1999-07-01 AT AT99890217T patent/ATE321975T1/en not_active IP Right Cessation
- 1999-07-01 EP EP99890217A patent/EP0972983B1/en not_active Expired - Lifetime
- 1999-07-01 DE DE59913281T patent/DE59913281D1/en not_active Expired - Lifetime
- 1999-07-01 ES ES99890217T patent/ES2262304T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AT500425B1 (en) | 2006-04-15 |
| EP0972983A3 (en) | 2001-07-04 |
| AT500425A1 (en) | 2005-12-15 |
| DE59913281D1 (en) | 2006-05-18 |
| AT500425B8 (en) | 2007-02-15 |
| ATE321975T1 (en) | 2006-04-15 |
| ES2262304T3 (en) | 2006-11-16 |
| EP0972983A2 (en) | 2000-01-19 |
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