DE1772352A1 - Double headlights for low beam and high beam, especially for motor vehicles - Google Patents

Description

Double headlights for low beam and high beam, especially for ICraft

vehicles

The present invention relates to a twin headlight for Low beam and high beam, especially for motor vehicles, with a one-piece, several parabolic mirrors of the same or different Their special purpose adapted focal length and shape having reflector body, which is sealed with a common diffuser Double headlight unit is connected.

A double headlight is already from the German utility model 1 753 612 of this type known, in which the one-piece, several parabolic mirrors of the same or different, adapted to their particular purpose Focal length and shape having reflector body is made in one operation from plastic by injection molding or pressing.

Cut the central axes of the parabolic mirrors for low and high beam in this case the horizontal center line of the twin headlight unit and are so close to each other that the two parabolic mirrors cut each other. All reflective surfaces of the plastic reflector body are mirrored in a vapor deposition process.

FK-2284/26. April 1968 Q09850 / 0930

In the description of the German utility model 1 753 612 it says pointed out «that earlier attempts have been made to use a reflector body for a double roof projector made from individual parabolic mirrors assemble different focal points and different shapes and combine them with a common lens to form a double headlight unit. However, these attempts to produce metallic reflector bodies for twin headlights have failed because of the connection the individual parabolic mirrors was very difficult at their abutting edges and, despite considerable oil saturation work, could not be produced with the desired optical accuracy.

The German utility model 1 753 612 showed a way to avoid these difficulties.

One according to the German utility model 1 753 612 made of plastic However, the reflector body manufactured by injection molding or compression molding has have some serious drawbacks.

So are the plastics that make the high levels found in a headlight Withstand operating temperatures without impermissible deformation, still relatively expensive and therefore not yet applicable for mass production. Furthermore, the optical performance of a double headlight according to the German utility model is greatly reduced by the parabolic mirrors that intersect in their horizontal extension.

The object of the present invention is to provide a double headlight for To create low and high beam, which has a one-piece, easy and cheap to manufacture from sheet metal reflector body, the with a common diffuser to form a sealed, load-bearing double thrower unit, which is due to the special arrangement of the Parabolic mirrors for low and high beam results in particularly favorable optical performances.

This object is achieved in accordance with the present invention. In that the parabolic mirrors for dipped and high beam are completely deep-drawn or pressed in their horizontal extension and at a small distance from one another on a piece of sheet metal and in which the two parabolic mirrors are connected Part of the parking light is arranged.

PK-2284 / April 26, 1968 009850/0930. 3.

BATH ORIGINAL

In this case, the center of the parabolic mirror is advantageously for the low beam a certain amount below and the midpoint of the Parabolic mirror for the high beam a certain amount above the horizontal Arranged center line of the rectangular twin headlight unit and which extend vertically above the height of the double headlight unit Parts of the two parabolic mirrors are horizontal in a manner known per se cut off.

The parabolic mirror for the low beam can in a preferred manner for a Normal incandescent lamp and the Parbol mirror for the high beam for a halogen incandescent lamp be designed.

Further details of the present invention are given with reference to the following Description of an embodiment shown in the accompanying drawing explained in more detail.

v'Iq. 1 shows a schematic view of a headlight unit according to the invention.

Fig. 2 is a schematic horizontal section through one according to the invention Double headlight unit.

FIG. 3 shows a schematic vertical section through an inventive concept Double headlight unit.

In the figures, a reflector body 1 is deep-drawn or from a piece of sheet metal pressed and gastight with a common diffuser 2, either detachable or non-detachable. At the ends of the formed in aeflektorkkörpers 1 Parabolic mirrors are the bulbs for the high beam 6 and for the low beam 7 attached via conventional lamp sockets and seals J. The reflector body 1 is uni one via two lower adjustment devices 5 upper adjustment device 4 attached to the body of the vehicle.

The upper attachment 4 is used as an adjusting screw for the inclination of the twin headlight unit around the horizontal axis and the fastening devices 5 as adjusting devices for the inclination of the twin headlights formed a vertical axis. In the part of the reflector body 1 that connects the two parabolic mirrors, the parking light is arranged in an expedient manner.

009850/0930

FK-2284/26 / April I968 - 4 -

BATH ORIGINAL

Due to the full horizontal extension of the two parabolic mirrors Direction a good optical performance is achieved in the area of interest and by arranging the two parabolic mirrors in a small distance from each other, the one-piece production from a piece of sheet metal by deep drawing or pressing is made possible. That through this The part of the reflector body that arises at a distance and connects the two parabolic mirrors 1 can be used in an expedient manner for the arrangement of the parking light 8, resulting in the further advantage that now neither of the two parabolic mirrors in its optical performance due to the arrangement the parking light is impaired.

About the desired, special optical performance of the double headlight according to the invention to achieve, the center of the parabolic mirror for the low beam is a certain distance below and the center point of the parabolic mirror and arranged for the high beam a certain amount above the horizontal center line of the rectangular twin headlight unit the parts of the two parabolic mirrors that go vertically above the height of the double headlight unit descend horizontally in a manner known per se.

In this way, the parts of the parabolic mirror that are relevant to each remain Purpose is important, despite the flat height of the double headlight unit uncut to the greatest possible extent.

In the embodiment shown in the drawing, the parabolic mirror is for the low beam for a normal incandescent lamp and the parabolic mirror for the high beam designed for a halogen bulb.

FK-2284 / April 26, 1968

009850/0930

BATH ORIGINAL

Claims (2)

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