RU1835476C - Automobile headlight - Google Patents

Abstract

Use: for lighting vehicles and cars. SUBSTANCE: headlamp with two light sources, vertically and horizontally inclined refractor and non-circular reflector. Re-. the collector has a pair of horizontal reflective segments, of which the focus of one horizontal reflective segment is closer to the external light source, and the focal length of the second protruding horizontal reflective segment is the same and / or less than the focal length of the horizontal reflective segment. Between these horizontal reflective segments in the reflector there is an upper reflective segment, or upper reflective segments, and a lower reflective segment, the focal length of which is less than the focal length of the upper reflective segments. Usage: in road transport, mainly in cars and other motor vehicles. 4 s.p. f-ly, 3 ill. (L C

Description

 FIELD OF THE INVENTION The invention relates to a car headlight, mainly, car headlights with two light sources, vertically and horizontally inclined refractor and a non-circular reflector. The increase in the photometric efficiency of the headlamp was solved by tangentially dividing the reflecting surface of the reflector into segments with different focal lengths, i.e. with a mismatch in the position of the tricks.

In FIG. 1 shows a reflector, a view of cn $ redi; figure 2 - headlight in horizontal section aa in Fig.Z; in Fig.Z - headlight in a vertical section bB in Fig.2.

Figure 1 shows the reflector 1 lights. The opening of its apex 11, which serves to mount the lamp with two light sources 4, 5, separates a pair of horizontal reflective segments 13, 14 mounted in the area around the horizontal axis Z of the headlamp. Between horizontal reflective

 segments 13, 14 in the reflector 1 is installed the upper reflective segment 15 or the upper reflective segments 15, 151, 152 ... and the lower reflective segment 16.

 The horizontal reflective segments 13, 14 of the reflector 1 expand from the aperture at the apex 11 to the outlet 12, which is inclined at an angle Qh. The focal length ft4i of the protruding horizontal horizontal reflection segment 14 is the same or smaller than the focal length f 13 of the opposite horizontal reflective segment 13 with respect to:

(14 ft3 (1)

00

ate

V

about

As a result, the difference between the horizontal size Zi4 of the protruding horizontal segment 14 and the horizontal size з1 of the opposite horizontal reflecting segment 13, which would otherwise be smaller due to the horizontal inclination of the outlet 12 of the reflector 1, is achieved, which would lead to a significantly different light concentration and different light intensity of both horizontal reflective segments, and as a result of this, to different photometric designs of the right and left headlights of the car .

The focus Fi3 of the horizontal reflective segment 13 is offset axially with respect to the focus Fi4 of the protruding reflective segment 14 so that it is closer to the external light source 4, which usually serves as a dipped-beam source. Due to this, the light beam reflected by the horizontal segment 13 is concentrated to a greater extent on the optical axis X than the light beam from the protruding horizontal reflecting segment 14, which improves the symmetry of the integrated light beam of the reflector 1. The level of the glare effect caused by the reflection of an external source is also reduced light 4 by the extreme zone of the protruding horizontal reflecting segment 14, where the magnitude and angle of the focal radius vector are high, so the stray light components penetrate beyond ranitsu beam and low beam shade. The focus shift Ft4 according to the invention eliminates this effect.

Fig. 3 shows a headlight in which, in connection with the vertical inclination of the refractor 2., in order to reduce the drag of the car body, the outlet 12 of the reflector 1 also has a vertical inclination at an angle of 6V, in which the upper reflector segments 13, 14 are mounted reflective segment 15 or upper reflective segments 15. 151, 152 .. and lower reflective segment 16, the focal length of which fie is smaller than the focal length fis.isi.is .... of the upper reflective segments 15, 151, 152 with respect to :

f 15.151,152 f (2)

With this arrangement, the thermal voltage of the upper reflective segment 15 remote from the light sources 4.5 decreases and the reflection angle increases, and therefore the photometric efficiency of the lower reflective segment 16, which reflects only the main beam emitted by the internal source 5. and

due to the vertical inclination of the outlet 12 of the reflector 1 may be more biased towards the headlight refractor 2 than the upper reflective segment 15. Focus Fie

5 of the lower reflective segment 16 coincides with the focus Fis of the upper reflective segment 15 or approaches the hole. peaks 11 of the reflector 1 near the center of the internal light source 5, which improves; The concentration of the main beam and the ratio of the axial and maximum luminous intensities.

Focal lengths fi5i.i52 .... lateral upper reflective segments 151.152, ...

15 of the reflector 1 is smaller than the focal length fi4 of the protruding horizontal reflective segment 14, and larger than the focal length fis of the central upper reflective segment 15 with respect to:

f 14 fl51.152 .... fl5. (3)

This improves the use of light in the upper half of the headlight, where with increasing reflection angle the photometric efficiency and radius of action of the headlight increase.

The reflecting segments -13, 14, 15, 151. 152, ... 16 of the reflector 1 have a concave shape and at least one of them, the main

0 way, the lower reflective segment 16, has the shape of a paraboloid and / or one of them is the shape of an ellipsoid.

Reflector 1 is made of a monolith of thermoplastic or thermosetting plastic.

Forms of the invention 1. Light for cars with two light sources with horizontally and vertically inclined refractor and reflector

40 non-circular shape, characterized in that the reflector in the area near the horizontal axis of the headlight is equipped with two horizontal reflective segments, which gradually expand from the aperture of the apex

45 of the reflector to vertically at an acute angle Qv and horizontally at an acute angle Qn to the inclined outlet of the reflector, the focal length fi4 of the protruding horizontal reflecting

50 segments is equal to or less than the focal length fi3 of the opposite horizontal reflective segment

fi4 Јft3. focus rtz horizontal reflective

55 segments are closer to the external light source than the focus of Fi4, the protruding horizontal reflective segment, the upper reflective segments and the lower reflective segment, the focal length of which fie is smaller than the focal length fi5.i5i.i52, are installed between the horizontal reflecting segments in the reflector. upper reflective segments in relation

fl5.151.152 fl6 ..:

2. The headlight according to claim 1, with the exception that the focus F16 of the lower reflective segment of the reflector is closer to the aperture of its apex than the focus FIS of the upper reflective segment.

3. A headlamp according to claims 1 and 2, characterized in that the focal length fi5i, i52 of the upper upper reflective segments is smaller than the focal length

151

1-13

0

protruding horizontal reflective segment and larger than the focal length fis of the central upper reflective segment with respect to

fl4 fl51,152 ... fl5.

4. Headlight according to claims 1-3. characterized in that at least one of the reflective segments is made in the form of a paraboloid or an ellipsoid,

5. A headlamp according to claims 1 to 4, characterized in that the reflector is made of a monolith of plastic, for example thermoplastic or t-reactive.

y t

Ik

11 I No. P

FIG. 1

Fig.Z