JPS60131701A - Headlight for automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: i The present invention relates to a motor vehicle light according to the preamble of claim 1.

Prior Art: Such a headlight is known from US Pat. No. 1,981,328. The exit aperture of the elysidoid 1st reflector faces downwards, the deflection reflector is part of the paraMroid, and its focus 4 is the same as the outer focus of the 1st V' reflector. 6. Disadvantages of the known head-light is the accumulation of heat in the apex region of the first reflector and the relatively large height of the luminous flux directed towards the roadway.

Problem to be solved by the invention: Due to the high temperatures in the apex region caused by heat retention, it is not possible to use plastics instead of metals as the rectifier material, which is advantageous. Due to the relatively large height of the luminous flux, especially in the case of large inclinations of the vehicle body, a high cover glass is required, which may impair the overall appearance of the front of the vehicle.

Means for solving the first problem: By the features set forth in claim 1, the problems indicated in the state of the art are almost solved. 1. Because the person who did it ran away. The heat transfer by convection to the first reflector is comparatively lower, so the maximum temperature of the second reflector is significantly lower than when the injection point is below or on the side. The use of particularly advantageous plastics, in particular thermoplastics, provides the advantage that the depth of the body, i.e. the length of the structure in the longitudinal direction of the vehicle, is greater than the width of the transverse injection opening.
(t”s decreases to V3.

Since it has a horizontal exit opening and has a large structural depth (extension in the direction of the longitudinal axis of the vehicle), it is not possible to completely incorporate all optical technical means. This is only possible due to the vertical arrangement of the first reflector.

,, Examples are described in claims 2 to '11. By forming the headlight according to claim 4, there is no longer any need for an optical path diaphragm that obstructs heat extraction.

If the reflector has a forward exit aperture, the original luminous flux will pass through the optical means of the closing plate. Finally, the length of the roadway light flux is changed. Is this transformation all about the refraction of light? Poorly done. By forming the headlight according to claim 5, the light conversion, that is, the change in the direction of the original light beam, is performed by refraction of the light and surface reflection. ζ
In this case, the direction of the original luminous flux after reflection changes significantly as it moves northward to the optical plane of high refraction at the same angle. Therefore, the requirement for a widely dispersed light distribution of the roadway light flux is satisfactorily met without any loss.

The conversion of the original light beam into the roadway light beam is also possible by partial surface reflection of the deflection reflector and refraction of the additional light by the closing plate. In this case, the optical elements of the deflecting reflector act on large directional changes, e.g. asymmetric sectors of the low beam, and the optical elements of the closing plate act on small directional changes and/or sectors in which the line of sight from the outside to the headlights is restricted. act. The mutual adjustment of reflective and refractive elements requires great care. By not using highly refractive optical elements in the closure plate, it is possible to tilt this plate more horizontally and/or laterally than hitherto.

A vertical arrangement of the second reflector is not always possible in many types of vehicles due to lack of space.

In such a case, it is advantageous to form a headlight in which the apex range of the first reflector is inclined, according to claim 8. This is because the deflection reflector approaches the closing plate.

This is because the cap only slightly impedes heat extraction. Although in this case the height of the light exit opening remains the same at different tilted positions of the reflector, the substantial surface area of the deflecting reflector changes.

'The components of the headlight must be integrated in a common casing, as in the case of conventional headlights, and must be adjustable for basic adjustment and, where appropriate, for adjustment of the throw distance. The formation of the headlight according to patent claims 9 and 10 discloses preferred means for this purpose: the control of the elements in the primarily relatively light deflection reflector firstly allows its energy-saving adjustment; The arrangement of the upper area of the engine room provides the possibility of easy access to the elements. Replacing the incandescent lamp is facilitated by the design of the headlight according to claim 11.

The arrangement of the first reflector with the exit opening at the top forms a chimney in itself, so that the desired heat extraction inside the reflector is easier than in the case of a conventional headlight with a horizontal optical axis. Simple technical measures of the reflector openings are sufficient for protection against splashing and running water and dust.

Example: Is the entire rectangular rad light on the right front side of the running beam and passing beam common to automobiles shown in Figure 1 Para 1? Roy r reflecting surface 11 and upward facing .5.

It has a first reflector 10 with an exit opening 12, which has two long sides 13 and two short sides 14, one of which
One is on the back side of the drawing, and consists of ・2″″″ and 4 is on the plane of the drawing.

Car longitudinal direction vertically parallel to the rear □ - arranged parallel to the center plane. At five points on the optical axis of the reflecting surface 11, there is a traveling beam-light emitter 16, and in front of it there are caps 1 and 8 that form a bright and dark boundary of the shielding light beam.

The light emitters 17 are arranged so that they pass each other. ``This cap is arranged on the reflector half 19 opposite to the direction of travel of the vehicle as indicated by the arrow 20.
alternately produce a raw beam for the passing beam or the traveling beam, which is indicated by ray 16a or 17a, respectively.

A flat (parallel plane) direction-changing reflector 21 is placed on the optical path of the traveling beam reflected beam \ bundle 16a and the original passing beam beam 17a above the second reflector 10.
5 with an inclination of 45°. The direction changing reflector 21 is moved within the range of the reflecting surface 23. It has rhythmic optical elements 22, which convert the original beam into a passing beam, indicated by ray 17b, or a running beam, indicated by ray 16b, respectively. The transparent closing plate 24 is a car body 25? 5. Close the headlights at a range and have approximately the same inclination and direction as the adjacent parts of the vehicle body. - In the second embodiment according to FIG. 2, parts that are the same as in FIG. 1 are designated with the same numbers. The axis 37 is the optical axis 3 below the reflector 30.
5 at right angles to the longitudinal vertical center plane. The first reflector 30 is rotated about the axis 3T in a direction opposite to the traveling direction indicated by the arrow 20 so that the optical axis 35 forms an obtuse angle 38 with the horizontal line 36. Passing beam 17b and running beam 1
In order to maintain the orientation 6b, the deflection reflector 21 must form an acute angle with the horizontal line 36a, the size of which is half the angle 38.

The second reflector 30 can be pivoted outwardly from the vehicle body 25 about an axis 37 in a manner not shown.

The device (not shown) for the basic adjustment of the headlights comprises a vertical adjustment element (adjustment screw) of the deflection reflector 21 and a similar element of the horizontal adjustment knob of the second reflector. Optionally all elements can be arranged in a redirecting reflector or a second reflector.

The reflective surface of the first reflector may have a balaporoid basic shape with an additional balaporoid section or an internal balaporoid section instead of the balaporoid. The reflective surface of the direction conversion mirror is also formed into a convex or concave surface instead of a flat surface.
or may consist of surfaces that encompass different angles from one another.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a headlight with a vertically arranged first reflector, and FIG. 2 a headlight with an inclined first reflector. 10.30... No. 1 reflector, 11... Reflective surface, 1
2... Injection aperture, 16... Traveling beam light emitter, 17
...Passing beam emitter, 18...Cap-1
21... Direction conversion reflector, 24... Closing plate, 2
5...Car body

Claims (1)

[Scope of Claims] 1. A second reflector having a light emitting body that generates an original luminous flux; A direction-changing reflector disposed in the optical path of the original luminous flux to reflect the original luminous flux onto the roadway; In a motor vehicle headlight with a closing plate, the first reflector (10, 30) A is formed as a rectangular reflector with an exit opening (12), the two short sides (14) of which are aligned with the longitudinal vertical central plane of the motor vehicle. An automobile headlight, characterized in that the exit opening (12) of the second reflector (10, 30) is arranged in parallel and faces upward. 2. The reflective surface (11) of the second reflector (10, 30) 3. The headlight according to claim 1, in which the reflecting surface of the second reflector has an additional balaboloid portion ν.
or ``Rose fK, o with inner part of Lab° Idoda
2. A headlight according to claim 1, which has a basic shape. 4. Form the bright/dark boundary of the passing beam. This cap (18) has a second reflector (
10, 30) on the reflector half (19) opposite the direction of motor vehicle travel (20). 5. It has an optical element for converting the original luminous flux for a passing beam or a traveling beam, and this optical element (22) is arranged on the -reflecting surface (23) of the direction-changing reflector (21). Any 1 from paragraph 1 to paragraph 4
Is it mentioned in the section? Headlight. 6. The headlight according to any one of claims 1 to 5, wherein the reflective surface (23) of the direction conversion reflector (21) is shaped into a flat surface. According to any one of claims 1 to 5, the reflecting surface of the Z direction conversion reflector is formed into a concave or convex surface, or consists of a number of surfaces encompassing mutually different angles m. Headlights included. 8. Optical axis (35) of the th reflector (3o) force running direction (
20) of the horizontal line (36) according to any one of claims 1 to 7. 9. Claim 1, comprising a device for basic adjustment of the headlight vertically and horizontally, wherein the vertical adjustment barrel element is fixed to the direction changing reflector, and the horizontal adjustment barrel element is arranged on the first reflector. The headlight according to any one of Items 1 to 8. 10. The headlight 11 according to claim 1, in which the elements for vertical and horizontal basic adjustment are arranged on the direction changing reflector or the second reflector. 3o) can turn outward from the vehicle body (25) around the horizontal axis (37)i! Claims 1 to 10 i
The headlight described in item 1.