DE1780208C

DE1780208C - Dimmable motor vehicle headlights

Info

Publication number: DE1780208C
Application number: DE19681780208
Authority: DE
Inventors: Heinz 4780 Lippstadt Droste
Original assignee: Westfaelische Metall Industrie KG Hueck and Co
Current assignee: Westfaelische Metall Industrie KG Hueck and Co
Filing date: 1968-08-16
Publication date: 1973-06-07

Description

gedankens hat es sich als besonders zweckmäßig erwiesen, die innen angeordnete Lichtscheibe mit einer schiefen Ebene zu versehen, auf der ein Ansatz des verschwenkbar gelagerten Reflektors gleitet. Der Verstellweg der Lichtscheibe oder auch der des Reflektors kann gleichzeitig zum Schalten einer Kontrollampe verwendet werden.thought it has proven to be particularly useful to provide the internally arranged lens with an inclined plane on which an approach of the pivoted reflector slides. The adjustment path of the lens or that of the reflector can be used at the same time to switch a control lamp.

Der erfindungsgemäße Scheinwerfer eignet sich besonders gut für eine Kombination des Nebelscheinwerfers mit dem Zusatzfernlichtscheinwerfer.The headlight according to the invention is particularly suitable for a combination of the fog lamp with the additional high beam headlight.

Die Zeichnung veranschaulicht ein Ausführungsbeispiel der Erfindung, und zwar zeigt The drawing illustrates an embodiment of the invention, namely shows

Fig. 1 einen Scheinwerfer im Horizontalschnitt mit der Schaltstellung »Fernlicht« undFig. 1 shows a headlight in horizontal section with the switch position »high beam« and

Fig. 2 einen Scheinwerfer im Horizontalschniti mit der Schaltstellung »Abblendlicht« oder »Nebellicht«, während Fig. 2 shows a headlight in a horizontal section with the switch position »low beam« or »fog light«, while

F ie. 3 einen Scheinwerfer im Vcrtikalschnitt darstellt." F ie. 3 represents a headlight in vertical section. "

Der Reflektor 1 ist um seine Horizontalachse 0, ao die vorteilhafterweise durch den Brennpunkt F g-.-M, verschwenkbar in dem nicht dargestellten Gehäuse gelagert. Durch Verschwenken des Reflektors werden die Lichtstrahlen 2 aus der horizontalen Lage heraus in eine zur Fahrbahn geneigte Lage gebracht. Dadurch wird die für das Abblendlicht und das, Nebellicht erforderliche Verkürzung der Leuchtweite erreicht. Die Streuung des für das Fernlicht stark gebündelten Lichts wird durch gegenseitiges Verschiebt η der beiden hintereinandergeschalteten Lichtscheiben 3 und 4 erreicht. Die beiden Lichtscheiben weisen auf der jeweils zu der anderen Scheibe hingerichteten Seite Linsen5 und 6 auf, die auf der einen Lichtscheibe 4 konvex und auf der anderen konkav ausgeführt sind. Diese unterschiedliche Ausführung der Linsen hat den Grund, daß der Abstand r.wischen den beiden Lichtscheiben geringer sein kann als die für beide Linsen gleich groß gehaltene Βκ·ηη-weite. Die Linsen sind streifenförmig ausgeführt, derart, daß sie über die gesamte Höhe der jewel;',^_n Lichtscheibe reichen. Weiterhin sind die Linsen , uer Lichtscheibe in einem einer Linsenbreite entspiechenden Abstand voneinander entfernt angeon
Der sich dadurch ergebende Zwischenbereich "'
planparallel ausgeführt, so daß das Licht durch
sen Bereich hindurchtreten kann, ohne eine nenn',
werte Brechung zu erfahren. Nehmen die Lichtsc
ben 3 und4 eine solche Stellung zueinander ein .
die Linsen 5 und 6 sich genau überlagern, so win:
von dem Reflektor parallelgebündelte Licht i:
gebrochen. Durch Verschießung einer Lichlbc'iK
vorzugsweise der innenliegenden, um eine L.ins
breite werden die planparallelen Bereiche 7
Scheibe 4 von den Kunkavlinsen 6 der Lichtsche
und die planparallelen Bereiche 7 α von den Konvexlinsen5 der Scheibe4 überlagert. Dadurch tritt das Licht nunmehr gestreut aus, wie es die Strahlen S in der Fig. 2 darstellen.The reflector 1 is mounted pivotably about its horizontal axis 0, ao that advantageously through the focal point F g -.- M, in the housing (not shown). By pivoting the reflector, the light beams 2 are brought out of the horizontal position into a position inclined to the roadway. This achieves the shortening of the headlight range required for the low beam and the fog light. The scattering of the light, which is strongly bundled for the high beam, is achieved by mutual displacement η of the two light disks 3 and 4 connected one behind the other. The two light discs have lenses 5 and 6 on the side facing the other disc, which lenses are convex on one disc 4 and concave on the other. The reason for this different design of the lenses is that the distance r between the two light discs can be smaller than the Βκ ηη width, which is kept the same for both lenses. The lenses are designed in strips so that they extend over the entire height of the jewel; ', ^ _n lens. Furthermore, the lenses and the lens are spaced apart from one another at a distance corresponding to a lens width
The resulting intermediate area "'
executed plane-parallel, so that the light through
can pass through this area without naming it,
worth refraction to experience. Take the light sc
ben 3 and 4 such a position to each other.
the lenses 5 and 6 overlap exactly, so win:
light i collimated in parallel by the reflector:
Broken. By shooting a Lichlbc'iK
preferably the inside, around a L.ins
The plane-parallel areas 7 become wide
Disk 4 from the Kunkav lenses 6 of the Lichtsche
and the plane-parallel regions 7 α of the convex lenses 5 of the disk 4 are superimposed. As a result, the light now emerges in a scattered manner, as represented by the rays S in FIG. 2.

Auf der zum Reflektor hingerichteten Seite der innenliegenden Lichtscheibe 3 ist ein als schiefe Ebene 9 ausgebildeter Ansatz angebracht, auf dem ein Ansatz 10 de* Reflektors gleitet. Beim Verschieben dei Lichtscheibe3 in Richtung/Y wird der Reflektor in Richtung Y verschwenkt.On the side of the inner lens 3 that is turned towards the reflector, an attachment designed as an inclined plane 9 is attached, on which an attachment 10 of the reflector slides. When moving the lens3 in the / Y direction, the reflector is swiveled in the Y direction.

:ei-.aß : ei-.ass

.las ein.read in

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

1 2 glare lacks, on the one hand, the absolutely necessary patent claims: latitude spread and, on the other hand, a clear and sharply delimited light-dark boundary.

1. Abblendbarenfahrzeugscheir.werfer Furthermore, it is already known to use a blendhamit only one light source arranged at the focal point of the parabolförmi- 5 ren with only one light source provided headlight reflector and fer with two front-side covering the reflector: - two the reflector front-side covering one behind the other arranged and staggered with prisms and provided with light-directing henen light discs, the light discs provided for the purpose of means, which can be rotated in opposite directions for the purpose of switching to high or low beam switching to high or low beam, whereby the one behind the other can be displaced parallel to one another, whereby the effect of the two prisms, depending on the position of the light-directing mites connected one behind the other, is either canceled out or added together in a certain position of the two. The light panes have to lift light panes to each other in their effect when switching to high or low beam, characterized in that 15 are rotated 180 ° against each other. This results in an adjustment path that increases the reflector around a horizontal axis (0), resulting in a long swiveling movement and the two light discs (3, switching time. In addition, 4) move against each other in the horizontal direction during switching can be shifted from high to low beam, of which one (3) concave light or vice versa the light beams! one strong and the other (4) convex in the we experience deflection to one side. The predominantly vertical and in one of the lens-described disadvantages allow an application of this wide corresponding distance to one another parallel . there is sufficient illumination of the road.

2. Motor vehicle headlight according to claim 1, as the object of the invention is now to provide a dimming marked that with the sliding headlight with only one bulb ben the lens, preferably the inside, bypassing the following The lens (3), the reflector (1) distribute one of the known headlights to both is panning. Types of light (low beam and high beam) matched

3. Motor vehicle headlight according to claim 2. 30 having light distribution and in which both for the characterized in that the internal high beam as well as the low beam for the entire The lens (3) has an inclined plane (9) and the mirror surface of the reflector can be used. The on the one approach (10) of the reflector to the high beam should be strongly bundled while the pivoting the latter slides. The glare is sharply delimited towards the top and towards the

4. Motor vehicle headlight according to claim 2, 35 pages is pulled apart wide.

characterized in that the adjustment path of the The invention therefore relates to an ab-

Lens (3) or the reflector (1) for the glare-proof headlight with only one in the focal

Switching a control lamp is used. arranged point of the parabolic reflector

Light source and two the reflector on the front

40 opaque, one behind the other arranged with light

directing means provided light discs that

for the purpose of switching to high or low beam are mutually parallel displaceable, the light-directing means connected in series

Dimmable headlights, in which only one light source is used for the * 5 in a certain position of the two light disks high and low beam, and cancel each other in their effect, are characterized in a wide variety of designs in that the reflector is around one knows. Horizontal axis pivotable and the two in the known dimmable headlights light discs in the horizontal direction gegeneinanmit only one light source, the switching of 5 <> which are slidable, one of which is concave z. B. high beam to low beam by moving the and the other convex executed essentially light source from the reflector focal point and by vertically and in one of the lens width correspondingly simultaneous folding or pushing in a corresponding distance from each other parallel dimming cap, which has the light source opposite a strip-shaped lens. Covers reflector half. In the case of high beam the light disks are arranged in the immediate vicinity of the light source in such a way that the lenses of both light disks are arranged. This version has the disadvantage that they overlap exactly, so that the parallel inaccuracies in the execution and position on the lenses auftreffenui.n light radiation tion of the anti-glare cap on the position and the run parallel from the headlamp run out of the light -Dark border in increased measure ⁶ o fall. When switching, one of the light discs will have an effect. In addition, only half of the range is shifted by the width of a lens, so that the reflector is used for the low beam. In another known embodiment, the areas of the other disk and vice versa will cover the reflector or the entire headlight. In this position the light panes are pivoted about a transverse axis. In this case, all of the light emerging from the reflector and only the essentially parallel light is inclined towards the roadway to form a beam of light extending across the width, without the strip of light being scattered. Light distribution is changed. In a further embodiment of the invention; -