EP0472890B1 - Multi-compartment light for motor vehicle - Google Patents

Multi-compartment light for motor vehicle Download PDF

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Publication number
EP0472890B1
EP0472890B1 EP91112094A EP91112094A EP0472890B1 EP 0472890 B1 EP0472890 B1 EP 0472890B1 EP 91112094 A EP91112094 A EP 91112094A EP 91112094 A EP91112094 A EP 91112094A EP 0472890 B1 EP0472890 B1 EP 0472890B1
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EP
European Patent Office
Prior art keywords
shaped
barrel
lines
cylinder
triple prisms
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
Application number
EP91112094A
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German (de)
French (fr)
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EP0472890A1 (en
Inventor
Wolfgang Bode
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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Filing date
Publication date
Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0472890A1 publication Critical patent/EP0472890A1/en
Application granted granted Critical
Publication of EP0472890B1 publication Critical patent/EP0472890B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • a multi-chamber lamp for motor vehicles is known, the lines of which alternate with triple prisms and lines reflecting external light rectangular barrel-shaped scattering elements, which have the same dimensions in their row height. These height dimensions of the rows continue over the lens sections of the neighboring chambers and should enable a sufficient light yield in the case of a line structure of the optics which is supported in the area of the brake light and the rear fog lamp by an upstream optical disk, the light being directed onto the corresponding barrel-shaped scattering elements is projected.
  • a small installation depth of the lamp chamber is necessary, which should avoid the use of an optics disc upstream of the lens and still apply the radiation values prescribed by law.
  • Such an optical disk has a light-reducing effect and increases manufacturing costs.
  • the usual upstream optical lens can also be omitted in the bright rear fog lamp, since the optically effective surfaces of the circular cone, especially in the vertical radiation plane in the range of + 5 ° and -5 °, reinforce the range for this area Bring the radiation values required by law.
  • the circular cone adjoins the tapered end of a truncated cone, as a result of which there is a better removal of the lens from the molding tool.
  • FIG. 1 shows the detail of the lens of a chamber from a multi-chamber lamp shown in FIG. 5, the lines labeled (1) representing barrel-shaped or cylindrical lenses (3), the lines labeled (2) representing the circular cones (4) ) and the lines labeled (11) the triple prisms (12).
  • the circular cones (4) adjoin each other with flats (5), each making up about 1/4 of the base diameter of the circular cone, so that the greatest optical effectiveness is achieved in the vertical radiation of the light. From the vertical section A-A shown in FIG. 2, the surface profile of the barrel-shaped or cylindrical lenses (3) can be seen compared to the circular-conical scattering elements (4).
  • the course of the rays shows that the parallel rays (6 and 7) coming from the reflector fall on the obtuse-angled surfaces (10) of the circular cone (4) of the angle ( ⁇ ⁇ 148 °) and through them behind the lens, based on the optical axis ( X) at + 5 ° upwards and -5 ° downwards.
  • the parallel beams (8 and 9), which fall on the barrel-shaped or cylindrical lenses (3), on the other hand, are fanned out behind the lens so that they fill an angle of 7.5 ° around the optical axis (Y) and thus fill in Connection with the circular conical scattering elements (4) meet the radiation values for intensity and angle required by ECE regulation.
  • FIG. 2 clearly shows that the circular-conical scattering elements (4) primarily have the task of supplementing the radiation values of the barrel-shaped or cylindrical lenses (3) in the vertical radiation plane and of intensifying them particularly in the area near the lamp.
  • a circular cone (4) greatly enlarged in FIG. 4 shows the different slope angles ( ⁇ ⁇ 16 °) of the circular cone (4) and ( ⁇ ) of the truncated cone (11).
  • the slope angle ( ⁇ ) of the truncated cone is primarily between 70 ° and 90 ° in order to facilitate the molding process of the lens after the injection molding process.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung bezieht sich auf eine Mehrkammerleuchte für Kraftfahrzeuge, mit folgenden Merkmalen:

  • die Lichtscheibe weist eine über die gesamte Leuchtenbreite sich erstreckende, zeilenförmige Struktur auf,
  • ein Lichtscheibenfeld der Mehrkammerleuchte ist mit Rückstrahlern versehen, deren Tripelprismen zeilenförmig angeordnet sind,
  • die Zeilen wechseln zwischen mit Fremdlicht reflektierenden Tripelprismen und tonnen- oder zylinderförmigen Linsen, die eine rechteckige und mit der langen Seite senkrecht stehende Projektionsfläche aufweisen,
  • die Fremdlicht reflektierenden Tripelprismen und die tonnen- oder zylinderförmigen Linsen sind auf der Innenseite der Lichtscheibe angeordnet,
  • die Zeilen mit Fremdlicht reflektierenden Tripelprismen und die Zeilen mit den tonnen- oder zylinderförmigen Linsen fluchten mit Zeilen optischer Streuelemente benachbarter Lichtscheibenabschnitte, die die gleiche Zeilenhöhe aufweisen wie die Tripelprismen und tonnen- oder zylinderförmigen Linsen, wobei die sich an die tonnen- oder zylinderförmigen Linsen zeilenförmig anschließenden Streuelemente ebenfalls als tonnen- oder zylinderförmige Linsen ausgebildet sind,
The invention relates to a multi-chamber lamp for motor vehicles, having the following features:
  • the lens has a line-like structure that extends across the entire width of the luminaire,
  • a lens field of the multi-chamber lamp is provided with reflectors, the triple prisms of which are arranged in a row,
  • the lines alternate between triple prisms reflecting external light and barrel-shaped or cylindrical lenses that have a rectangular projection surface that is vertical with the long side,
  • the triple prisms reflecting extraneous light and the barrel-shaped or cylindrical lenses are arranged on the inside of the lens,
  • the lines with triple prisms reflecting extraneous light and the lines with the barrel-shaped or cylindrical lenses are aligned with lines of optical scattering elements of adjacent lens sections which have the same line height as the triple prisms and barrel-shaped or cylindrical lenses, the lines being in line with the barrel-shaped or cylindrical lenses subsequent scattering elements are also designed as barrel-shaped or cylindrical lenses,

Aus der DE-PS 33 05 218 ist eine Mehrkammerleuchte für Kraftfahrzeuge bekannt, deren Zeilen sich abwechseln mit Fremdlicht reflektierenden Tripelprismen und Zeilen mit rechteckigen tonnenförmigen Streuelementen, die in ihrer Zeilenhöhe gleiche Abmessungen aufweisen. Diese Höhenabmaße der Zeilen setzen sich fort über die Lichtscheibenabschnitte der benachbarten Kammern und sollen bei einer zeilenmäßig angestrebten Struktur der Optiken eine genügende Lichtausbeute ermöglichen, die im Bereich des Bremslichtes und der Nebelschlußleuchte durch eine vorgeschaltete Optikscheibe unterstützt wird, wobei das Licht auf die entsprechenden tonnenförmigen Streuelemente projiziert wird. Um dem geringen Einbauraum für Mehrkammerleuchten in modernen Karosserien Rechnung zu tragen, ist jedoch eine geringe Einbautiefe der Leuchtenkammer notwendig, die möglichst auf eine der Lichtscheibe vorgeschalteten Optikscheibe verzichten sollte und dabei trotzdem die vom Gesetzgeber vorgeschriebenen Abstrahlwerte aufbringt.From DE-PS 33 05 218 a multi-chamber lamp for motor vehicles is known, the lines of which alternate with triple prisms and lines reflecting external light rectangular barrel-shaped scattering elements, which have the same dimensions in their row height. These height dimensions of the rows continue over the lens sections of the neighboring chambers and should enable a sufficient light yield in the case of a line structure of the optics which is supported in the area of the brake light and the rear fog lamp by an upstream optical disk, the light being directed onto the corresponding barrel-shaped scattering elements is projected. In order to take into account the small installation space for multi-chamber lamps in modern car bodies, however, a small installation depth of the lamp chamber is necessary, which should avoid the use of an optics disc upstream of the lens and still apply the radiation values prescribed by law.

Außerdem wirkt sich eine solche Optikscheibe lichtmindernd und auf die Herstellungskosten erhöhend aus.In addition, such an optical disk has a light-reducing effect and increases manufacturing costs.

Es ist deshalb Aufgabe der Erfindung, die im Gattungsbegriff aufgeführte Mehrkammerleuchte so auszubilden, daß die vom Gesetzgeber geforderte Horizontal- und Vertikalstreuung bei vorgegebener Intensität durch die eingesetzte Lichtscheibenoptik erreicht wird, ohne dabei vor die abschließende Lichtscheibe eine Optikscheibe einsetzen zu müssen und wobei die in Nachbarbereichen der Lichtscheibe zu den Rückstrahlertripeln fluchtenden Zeilen mit ihren Streuelementen einen solchen homogenen Eindruck für den Betrachter von außen vermitteln, als würde sich die Struktur der Rückstrahlertripel über die Lichtscheiben der benachbarten Kammern fortsetzen.It is therefore an object of the invention to design the multi-chamber luminaire listed in the generic term so that the horizontal and vertical scatter required by law is achieved at a given intensity by the lens optics used, without having to insert an optical disk in front of the final lens and in neighboring areas the lines aligned with the lens to the reflector triples with their scattering elements give the viewer such a homogeneous impression from the outside as if the structure of the reflector triples continued over the lenses of the neighboring chambers.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß

  • die sich an die Tripelprismen zeilenförmig anschließenden optischen Streuelemente aus in Zeilen aneinandergereihter Kreiskegel bestehen,
  • die Kreiskegel mit ihren Spitzen entgegen der Lichtaustrittsrichtung gerichtet sind,
  • die Kreiskegel mit Abflachungen aneinandergrenzen,
  • jede Abflachung eines Kreiskegels in etwa 1/4 des Grundflächendurchmessers des Kreiskegels beträgt,
  • die Spitze des Kreiskegels einen stumpfen Winkel bildet.
This object is achieved in that
  • the optical scattering elements adjoining the triple prisms in line form consist of circular cones strung together in lines,
  • the circular cones with their tips are directed against the light exit direction,
  • border the circular cones with flats,
  • each flattening of a circular cone is approximately 1/4 of the base diameter of the circular cone,
  • the top of the circular cone forms an obtuse angle.

Bei Anwendung dieser Kreiskegelstruktur in der Lichtscheibe kann auch bei der lichtstarken Nebelschlußleuchte die sonst übliche vorgeschalte Optikscheibe entfallen, da die optisch wirksamen Flächen des Kreiskegels vor allem in der vertikalen Abstrahlungsebene im Bereich um +5° und -5° eine Verstärkung der für diesen Bereich vom Gesetzgeber geforderten Abstrahlungswerte bringen.When using this circular cone structure in the lens, the usual upstream optical lens can also be omitted in the bright rear fog lamp, since the optically effective surfaces of the circular cone, especially in the vertical radiation plane in the range of + 5 ° and -5 °, reinforce the range for this area Bring the radiation values required by law.

In einer vorteilhaften Ausbildung der Erfindung schließt sich der Kreiskegel an das verjüngende Ende eines Kegelstumpfes an, wodurch eine bessere Entnahme der Lichtscheibe aus dem Formwerkzeug gegeben ist.In an advantageous embodiment of the invention, the circular cone adjoins the tapered end of a truncated cone, as a result of which there is a better removal of the lens from the molding tool.

Die Erfindung wird anhand einer Zeichnung näher erläutert. Darin zeigen

Figur 1
eine vergrößerte Teilansicht auf die Innenseite der Lichtscheibe der Nebelschlußleuchte in der Mehrkammerleuchte,
Figur 2
einen Schnitt gemäß der Linie A-A in Figur 1,
Figur 3
einen Schnitt gemäß der Linie B-B in Figur 1,
Figur 4
einen vergrößerten Kreiskegel,
Figur 5
die Vorderansicht auf die Lichtscheibe der Mehrkammerleuchte.
The invention is explained in more detail with reference to a drawing. Show in it
Figure 1
an enlarged partial view of the inside of the lens of the rear fog lamp in the multi-chamber lamp,
Figure 2
2 shows a section along line AA in FIG. 1,
Figure 3
2 shows a section along line BB in FIG. 1,
Figure 4
an enlarged circular cone,
Figure 5
the front view of the lens of the multi-chamber lamp.

In der Zeichnung zeigt Figur 1 den Ausschnitt der Lichtscheibe einer Kammer von einer in Figur 5 dargestellten Mehrkammerleuchte, wobei die mit (1) bezeichneten Zeilen tonnen- oder zylinderförmige Linsen (3) darstellen, die mit (2) bezeichneten Zeilen die aneinandergereihten Kreiskegel (4) und die mit (11) bezeichneten Zeilen die Tripelprismen (12). An den Seiten grenzen die Kreiskegel (4) mit Abflachungen (5) aneinander, wobei jede etwa 1/4 des Grundflächendurchmessers des Kreiskegels ausmacht, so daß die größte optische Wirksamkeit bei der Vertikalabstrahlung des Lichtes zustande kommt. Aus dem in Figur (2) gezeigten Vertikalschnitt A-A ist der Flächenverlauf der tonnen- oder zylinderförmigen Linsen (3) gegenüber den kreiskegelförmigen Streuelementen (4) ersichtlich. Der Strahlenverlauf zeigt, daß die vom Reflektor kommenden parallelgerichteten Strahlen (6 und 7) auf die stumpfwinkligen Flächen (10) des Kreiskegels (4) des Winkels (γ ≈ 148°) fallen und durch diese hinter der Lichtscheibe, bezogen auf die optische Achse (X) bei +5° nach oben und -5° nach unten, abgelenkt werden. Die Parallelstrahlen (8 und 9), die auf die tonnen- oder zylinderförmigen Linsen (3) fallen, werden dagegen hinter der Lichtscheibe so gefächert, daß sie einen Winkel von 7,5° um die optische Achse (Y) überstreichend ausfüllen und somit in Verbindung mit den kreiskegeligen Streuelementen (4) die nach ECE-Regelung geforderten Abstrahlwerte nach Intensität und Winkel erfüllen. In Figur 2 wird anschaulich gezeigt, daß die kreiskegeligen Streuelemente (4) vorrangig die Aufgabe haben, die Abstrahlwerte der tonnen- oder zylinderförmigen Linsen (3) in vertikaler Abstrahlebene zu ergänzen und diese besonders im leuchtennahen Bereich zu verstärken. Ein in Figur 4 stark vergrößerter Kreiskegel (4) zeigt die unterschiedlichen Böschungswinkel (α ≈ 16°) des Kreiskegels (4) und (β) des Kegelstumpfes (11). Der Böschungswinkel (β) des Kegelstumpfes liegt in erster Linie zwischen 70° und 90°, um den Ausformungsprozeß der Lichtscheibe nach dem Spritzgießvorgang zu erleichtern.In the drawing, FIG. 1 shows the detail of the lens of a chamber from a multi-chamber lamp shown in FIG. 5, the lines labeled (1) representing barrel-shaped or cylindrical lenses (3), the lines labeled (2) representing the circular cones (4) ) and the lines labeled (11) the triple prisms (12). On the sides, the circular cones (4) adjoin each other with flats (5), each making up about 1/4 of the base diameter of the circular cone, so that the greatest optical effectiveness is achieved in the vertical radiation of the light. From the vertical section A-A shown in FIG. 2, the surface profile of the barrel-shaped or cylindrical lenses (3) can be seen compared to the circular-conical scattering elements (4). The course of the rays shows that the parallel rays (6 and 7) coming from the reflector fall on the obtuse-angled surfaces (10) of the circular cone (4) of the angle (γ ≈ 148 °) and through them behind the lens, based on the optical axis ( X) at + 5 ° upwards and -5 ° downwards. The parallel beams (8 and 9), which fall on the barrel-shaped or cylindrical lenses (3), on the other hand, are fanned out behind the lens so that they fill an angle of 7.5 ° around the optical axis (Y) and thus fill in Connection with the circular conical scattering elements (4) meet the radiation values for intensity and angle required by ECE regulation. FIG. 2 clearly shows that the circular-conical scattering elements (4) primarily have the task of supplementing the radiation values of the barrel-shaped or cylindrical lenses (3) in the vertical radiation plane and of intensifying them particularly in the area near the lamp. A circular cone (4) greatly enlarged in FIG. 4 shows the different slope angles (α ≈ 16 °) of the circular cone (4) and (β) of the truncated cone (11). The slope angle (β) of the truncated cone is primarily between 70 ° and 90 ° in order to facilitate the molding process of the lens after the injection molding process.

Claims (2)

  1. Multi-compartment lamp for motor vehicles, having the following features:
    - the lens plate has a linear structure which extends the entire width of the lamp,
    - a lens field of the multi-compartment lamp is provided with reflex reflectors, the triple prisms (12) of which are set in a linear arrangement,
    - the lines (1, 11) alternate between triple prisms (12) which reflect extraneous light, and barrel-shaped or cylinder-shaped lenses (3) which incorporate a rectangular projection surface with its long side vertically upright,
    - the triple prisms (12) which reflect extraneous light, and the barrel-shaped or cylinder-shaped lenses (3), are set on the inside face of the lens plate,
    - the lines (11) with triple prisms (12) which reflect extraneous light, and the lines (1) with the barrel-shaped or cylinder-shaped lenses (3), are in alignment with lines of optical dispersion elements of neighbouring lens plate sections which have the same line height as the triple prisms (12) and barrel-shaped or cylinder-shaped lenses (3), the dispersion elements which linearly adjoin the barrel-shaped or cylinder-shaped lenses (3) likewise being in the form of barrel-shaped or cylinder-shaped lenses (3),
    characterised in that
    - the optical dispersion elements linearly adjoining the triple prisms (12) consist of circular cones (4) ranged alongside one another in lines (2),
    - the circular cones (4) are directed with their apexes towards the direction in which the light emerges,
    - the circular cones (4) are contiguous with flattened portions (5),
    - each flattened portion (5) of a circular cone (4) is roughly one-quarter of the base diameter of the circular cone,
    - the apex of the circular cone (4) forms an obtuse angle (γ).
  2. Multi-compartment lamp according to claim 1, characterised in that the circular cone (4) adjoins the tapering end of a truncated cone (11).
EP91112094A 1990-08-10 1991-07-19 Multi-compartment light for motor vehicle Expired - Lifetime EP0472890B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4025393A DE4025393C1 (en) 1990-08-10 1990-08-10
DE4025393 1990-08-10

Publications (2)

Publication Number Publication Date
EP0472890A1 EP0472890A1 (en) 1992-03-04
EP0472890B1 true EP0472890B1 (en) 1994-06-29

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EP91112094A Expired - Lifetime EP0472890B1 (en) 1990-08-10 1991-07-19 Multi-compartment light for motor vehicle

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DE (1) DE4025393C1 (en)
ES (1) ES2055493T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685440A1 (en) * 1991-12-20 1993-06-25 Valeo Vision ICE FOR OPTICAL SIGNALING DEVICE EQUIPPED WITH PSEUDO-CATADIOPTRIC ELEMENTS.
EP0990838A2 (en) 1998-09-29 2000-04-05 Hella KG Hueck & Co. Lamp for motor vehicles

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4324037B4 (en) * 1993-07-17 2006-07-13 Itt Automotive Europe Gmbh Signal light, in particular for motor vehicles
FR2733949B1 (en) * 1995-05-09 1997-08-01 Valeo Vision MULTIFUNCTIONAL SIGNAL LIGHT FOR A MOTOR VEHICLE, EQUIPPED WITH CATADIOPTRIC AND PSEUDO-CATADIOPTRIC ELEMENTS
DE10037007A1 (en) * 2000-07-29 2002-03-07 Hella Kg Hueck & Co Vehicle lamp, has a reflector comprising an assembly of injection molded base reflectors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB590357A (en) * 1945-04-18 1947-07-15 Gen Electric Co Ltd Improvements in and relating to lighting fittings
DE933563C (en) * 1953-11-05 1955-09-29 Westland Gummiwerke G M B H Reflector for road vehicles
DE6908341U (en) * 1969-03-01 1969-06-12 Siemens Ag TRANSLUCENT COVER FOR LIGHTS
US4332438A (en) * 1979-03-23 1982-06-01 Lucas Industries Limited Lens element
DE3305218C2 (en) * 1983-02-16 1986-03-20 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Multi-chamber light for motor vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685440A1 (en) * 1991-12-20 1993-06-25 Valeo Vision ICE FOR OPTICAL SIGNALING DEVICE EQUIPPED WITH PSEUDO-CATADIOPTRIC ELEMENTS.
EP0549423A1 (en) * 1991-12-20 1993-06-30 Valeo Vision Lens for signalling optical device equipped with pseudo-catadioptric elements
EP0990838A2 (en) 1998-09-29 2000-04-05 Hella KG Hueck & Co. Lamp for motor vehicles

Also Published As

Publication number Publication date
EP0472890A1 (en) 1992-03-04
ES2055493T3 (en) 1994-08-16
DE4025393C1 (en) 1992-01-09

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