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DE2748981A1 - Vehicle lighting unit comprises reflector with light bulb and cover - which is two-ply laminate of clear polycarbonate and transparent opt. coloured PMMA - Google Patents

Vehicle lighting unit comprises reflector with light bulb and cover - which is two-ply laminate of clear polycarbonate and transparent opt. coloured PMMA

Info

Publication number
DE2748981A1
DE2748981A1 DE19772748981 DE2748981A DE2748981A1 DE 2748981 A1 DE2748981 A1 DE 2748981A1 DE 19772748981 DE19772748981 DE 19772748981 DE 2748981 A DE2748981 A DE 2748981A DE 2748981 A1 DE2748981 A1 DE 2748981A1
Authority
DE
Germany
Prior art keywords
reflector
lighting device
cover
outer layer
light bulb
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.)
Pending
Application number
DE19772748981
Other languages
German (de)
Inventor
Helmut Ing Grad Eberspaecher
Gerhard Schnurr
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.)
Reitter & Schefenacker KG
Original Assignee
Reitter & Schefenacker KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Reitter & Schefenacker KG filed Critical Reitter & Schefenacker KG
Priority to DE19772748981 priority Critical patent/DE2748981A1/en
Publication of DE2748981A1 publication Critical patent/DE2748981A1/en
Pending legal-status Critical Current

Links

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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • 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
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/125—Coloured light
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • 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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/10—Protection of lighting devices

Landscapes

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

Abstract

Lighting fitting for vehicles has a reflector adapted to receive a light bulb, and a 2-ply transparent cover. The cover is composed of two plastics, injection-moulded laminae, the outer one consisting of PMMA, and the inner one (i.e. that facing the reflector) (of pref. glass-clear) polycarbonate. The PMMA lamina may be coloured, suitably zone-wise in various tints, e.g. yellow and/or red, or colourless and/or yellow. The prod. has outstanding heat-stability, dimensional accuracy, scratch-resistance and improved elasticity.

Description

Beleuchtungseinrichtung für Fahrzeuge. Lighting device for vehicles.

Die Erfindung betrifft eine Beleuchtungseinrichtung für Fahrzeuge mit einem eine Glühlampe aufnehmenden Reflektor und mit einer den Reflektor nach außen abschließenden, lichtdurchlässigen Lichtscheibe. Die erfindungsgemäße Beleuchtungseinrichtung kann für jede Art von Fahrzeugen verwendet werden, also für Landfahrzeuge einschließlich Kraftfahrzeugen und schienengebundenenFahrzeugen,ebenso für Lurt- und für Wasserfahrzeuge.The invention relates to a lighting device for vehicles with a reflector accommodating an incandescent lamp and with a reflector after translucent lens that closes off the outside. The lighting device according to the invention can be used for any type of vehicle, including land vehicles Motor vehicles and rail-bound vehicles, also for Lurt and water vehicles.

Der Erfindung liegt die Aufgabe zugrunde, eine aus zwei Schichten stehende, aus Kunststoff hergestellte Lichtscheibe zu schaffen, welche eine erhöhte Wärmebeständigkeit, Formbeständigkeit, Kratzfestigkeit sowie erhöhte Elastizität aufweist.The invention is based on the object of one of two layers to create standing lens made of plastic, which has an increased Heat resistance, dimensional stability, scratch resistance and increased elasticity having.

Zur Lösung dieser Aufgabe ist gegenüber den bekannten Lichtscheiben, die zwei Schichten aus gleichem Werkstoff aufweisen, erfindungsgemäß vorgesehen, daß die Lichtscheibe aus zwei aus Kunststoff gespritzten Schichten besteht, von denen die außenliegende Schicht aus Polymethylmethacrylat und die dem Reflektor benachbarte Innenschicht aus Polykarbonat, vorzugsweise aus glasklarer Polykarbonat besteht. In dieser erfindungsgemäßen Anordnung bietet die aus Polykarbonat bestehende innere Schicht der Lichtscheibe den Vorteil einer geringen Bruchgefahr infolge der hohen Elastizität des Polykarbonats. Hierbei entsteht der weitere Vorteil, daß keine Verformung beim Nachlackieren entsteht. Die außenliegende Polymethylmethacrylatschicht bietet den Vorteil einer hohen Kratzfestigkeit und einer hohen Beständigkeit, vor allem gegenüber Beaufschlagung mit Kraftstoff und gegenüber Witterungseinflüssen.To solve this problem, compared to the known light discs, which have two layers of the same material, provided according to the invention, that the lens consists of two layers injection-molded from plastic, of those of the outer layer made of polymethyl methacrylate and that of the reflector Adjacent inner layer made of polycarbonate, preferably made of clear polycarbonate consists. In this arrangement according to the invention, the one made of polycarbonate offers inner layer of the lens has the advantage of a low risk of breakage due to the high elasticity of the polycarbonate. This has the further advantage that none Deformation occurs when repainting. The external polymethyl methacrylate layer offers the advantage of high scratch resistance and high durability, before especially against the application of fuel and against the effects of the weather.

Außerdem ist der Werkstoffpreis für eine Polymethylmethacrylat-Schicht besonders niedrig.In addition, the material price is for a polymethyl methacrylate layer particularly low.

Die Erfindung ist nachstehend anhand eines Ausführungsbeispieles, einer Beleuchtungseinrichtung für Kraftfahrzeuge, näher beschrieben, welche in der Zeichnung in einem horizontalen Längsschnitt dargestellt ist.The invention is described below using an exemplary embodiment, a lighting device for motor vehicles, described in more detail, which in the Drawing is shown in a horizontal longitudinal section.

Als Ausführungsbeispiel ist ein RUckfahrscheinwerfer dargestellt.A reversing light is shown as an exemplary embodiment.

Dieser enthält in einem nicht wiedergegebenen Gehäuse einen Reflektor 1, der aus Metall tiefgezogen ist und in seinem Zentrum eine Nabe 2 für eine GlUhlampe 3 enthält.This contains a reflector in a housing that is not shown 1, which is deep-drawn from metal and in its center a hub 2 for an incandescent lamp 3 contains.

Der zu seiner in der Zeichnung bei 4 angedeuteten Achse drehsymmetrisch ausgebildete Reflektor 1 ist an seiner Stirnseite von einer Lichtscheibe 5 abgedeckt. Diese besteht erfindungsgemäß aus einer inneren Schicht 6, welche glasklar ausgebildet ist und aus Polykarbonat hergestellt ist. Auf dieser Innenschicht 6 ist eine Außenschicht 7 aufgespritzt, welche aus Polymethylmethacrylat besteht.The rotationally symmetrical to its axis indicated at 4 in the drawing formed reflector 1 is covered on its end face by a lens 5. According to the invention, this consists of an inner layer 6 which is crystal clear and is made of polycarbonate. On this inner layer 6 is an outer layer 7 sprayed on, which consists of polymethyl methacrylate.

Bei der vorgesehenen Verwendung als Rückfahrscheinwerfer ist die Polymethylmethacrylat-Schid t 7 glasklar ausgebildet und schützt dann infolge ihrer hohen Kratzfestigkeit die darunterliegende Innenschicht 6 vor Kratzern und ähnlichen, nachteiligen Einflüssen.When used as a reversing light, the polymethyl methacrylate shield t 7 is crystal clear and, thanks to its high scratch resistance, then protects the underlying inner layer 6 from scratches and similar, disadvantageous influences.

Wenn jedoch die erfindungsgemäß ausgebildete, zweischichtige Lichtscheibe für eine, für mehrere Funktionen, beispielsweise als Bremsleuchte, Fahrtrichtungs-Anzeigevorrichtung und/oder Nebelschlußleuchte.verwendet werden soll, kann die Außenschicht mit Farbstoff vermischt sein. In diesem Falle ist es ohne weiteres möglich, die Außenschicht in mehrere, gegeneinander flächenmäßig abgegrenzte Zonen aufzuteilen, die jeweils voneinander verschiedene Farbgebung aufwaisen. Hierbei können die einzelnen Zonen der erfindungsgemäßen Außenschicht aus glasklarem Polymethylmethacrylat und/oder gelbem und/oder rotem Methacrylat bestehen. Die Erfindung erlaubt es außerdem, daß die farbigen Zonen durch Aufspritzen von Lack auf die Außen-Schicht erzeugt werden, wobei das zur Außenschicht verwendete Polymethylmethycrylat verhindert, daß beim Aufspritzen Deformationen der innenliegenden, aus Polykarbonat bestehenden Innen-Schicht der Lichtscheibe entstehen können.If, however, the two-layer lens formed according to the invention for one, for several functions, for example as a brake light, travel direction display device and / or rear fog light. To be used, the outer layer can be dyed be mixed. In this case it is easily possible to put the outer layer in to divide several, mutually delimited zones, each from each other different colors. Here the individual Zones the outer layer according to the invention made of clear polymethyl methacrylate and / or yellow and / or red methacrylate. The invention also allows that the colored zones are created by spraying varnish onto the outer layer, the polymethyl methacrylate used for the outer layer prevents the Injection deformations of the inner layer made of polycarbonate the lens.

Claims (5)

Ansprüche 1. Beleuchtungseinrichtung rür Fahrzeuge mit einem eine Glühlampe aufnehmenden Reflektor und mit einer den Reflektor nach außen abschließenden, lichtdurchlässigen Lichtscheibe, die aus zwei Schichten besteht, dadurch gekennzeichnet, daß die Lidhtscheibe (5) aus zwei aus Kunststoff gespritzten Schichten (6,7) besteht, von denen die außenliegende Schicht (7) aus Polymethylmethacrylat und die dem Reflektor (1) benachbarte Innen-Schicht (6) aus Polykarbonat, vorzugsweise aus glasklarem Polykarbonat, besteht. Claims 1. Lighting device for vehicles with a one Incandescent lamp receiving reflector and with a reflector closing off to the outside, translucent lens, which consists of two layers, characterized in that that the lid disc (5) consists of two layers (6,7) injected from plastic, of which the outer layer (7) made of polymethyl methacrylate and that of the reflector (1) Adjacent inner layer (6) made of polycarbonate, preferably made of clear glass Polycarbonate. 2. Beleuchtungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Außen-Schicht (7) auf die Innen-Schicht (6) aufgespritzt ist.2. Lighting device according to claim 1, characterized in that that the outer layer (7) is sprayed onto the inner layer (6). 3. Beleuchtungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Außen-Schicht (7) aus mit Farbstoff vermischtem Polymethylmethacrylat besteht.3. Lighting device according to claim 1 or 2, characterized in that that the outer layer (7) consists of polymethyl methacrylate mixed with dye. 4. Beleuchtungseinrichtung nach einem der AnsprUche 1 bis 3, dadurch gekennzeichnet, daß die Außenschicht (7) mehrere gegeneinander flächenmäßig abgegrenzte Zonen von verschiedener Farbgebung aufweist.4. Lighting device according to one of claims 1 to 3, characterized characterized in that the outer layer (7) has several areas that are delimited from one another in terms of area Has zones of different colors. 5. Beleuchtungseinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die gegeneinander abgegrenzten Zonen aus glasklarem und/ oder gelben und/oder rotem Polymethylmethacrylat bestehen.5. Lighting device according to claim 4, characterized in that that the mutually delimited zones made of crystal clear and / or yellow and / or consist of red polymethyl methacrylate.
DE19772748981 1977-11-02 1977-11-02 Vehicle lighting unit comprises reflector with light bulb and cover - which is two-ply laminate of clear polycarbonate and transparent opt. coloured PMMA Pending DE2748981A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772748981 DE2748981A1 (en) 1977-11-02 1977-11-02 Vehicle lighting unit comprises reflector with light bulb and cover - which is two-ply laminate of clear polycarbonate and transparent opt. coloured PMMA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772748981 DE2748981A1 (en) 1977-11-02 1977-11-02 Vehicle lighting unit comprises reflector with light bulb and cover - which is two-ply laminate of clear polycarbonate and transparent opt. coloured PMMA

Publications (1)

Publication Number Publication Date
DE2748981A1 true DE2748981A1 (en) 1979-05-03

Family

ID=6022822

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772748981 Pending DE2748981A1 (en) 1977-11-02 1977-11-02 Vehicle lighting unit comprises reflector with light bulb and cover - which is two-ply laminate of clear polycarbonate and transparent opt. coloured PMMA

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Country Link
DE (1) DE2748981A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2820113A1 (en) * 1978-05-09 1979-11-15 Bosch Gmbh Robert Diffuser for headlights of vehicles
DE3120753A1 (en) * 1980-06-05 1982-05-27 IAO Industrie Riunite S.p.A., 10092 Beinasco, Torino HEADLIGHT UNIT
DE3447848A1 (en) * 1984-12-31 1986-07-10 Stanley Electric Co Ltd VEHICLE LAMP
FR2600754A1 (en) * 1986-06-30 1987-12-31 Mille Jacques Product for the repair, maintenance or masking of vehicle lamps
EP0601389A1 (en) * 1992-12-04 1994-06-15 BARTENBACH Christian Lamp with a light influencing cover glass
EP0768491A1 (en) * 1995-10-12 1997-04-16 Osram Sylvania Inc. Colored and decorative lighting
WO2021121739A1 (en) 2019-12-19 2021-06-24 Daimler Ag Reflector, and light projector of a vehicle, having the reflector
WO2021209694A1 (en) * 2020-04-15 2021-10-21 Psa Automobiles Sa Lens intended to close a lamp housing for a motor vehicle, comprising a wall and at least one light guide

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2820113A1 (en) * 1978-05-09 1979-11-15 Bosch Gmbh Robert Diffuser for headlights of vehicles
DE3120753A1 (en) * 1980-06-05 1982-05-27 IAO Industrie Riunite S.p.A., 10092 Beinasco, Torino HEADLIGHT UNIT
DE3447848A1 (en) * 1984-12-31 1986-07-10 Stanley Electric Co Ltd VEHICLE LAMP
FR2575805A1 (en) * 1984-12-31 1986-07-11 Stanley Electric Co Ltd LAMP COMPRISING AN INTERNAL LENS FOR VEHICLE
FR2600754A1 (en) * 1986-06-30 1987-12-31 Mille Jacques Product for the repair, maintenance or masking of vehicle lamps
EP0601389A1 (en) * 1992-12-04 1994-06-15 BARTENBACH Christian Lamp with a light influencing cover glass
EP0768491A1 (en) * 1995-10-12 1997-04-16 Osram Sylvania Inc. Colored and decorative lighting
WO2021121739A1 (en) 2019-12-19 2021-06-24 Daimler Ag Reflector, and light projector of a vehicle, having the reflector
WO2021209694A1 (en) * 2020-04-15 2021-10-21 Psa Automobiles Sa Lens intended to close a lamp housing for a motor vehicle, comprising a wall and at least one light guide
FR3109427A1 (en) * 2020-04-15 2021-10-22 Psa Automobiles Sa Glass intended to close an optical housing for a motor vehicle, comprising a partition and at least one light guide

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