CN85203031U

CN85203031U - Automobile headlamp

Info

Publication number: CN85203031U
Application number: CN 85203031
Authority: CN
Inventors: 吉亚科默·蒙塔诺
Original assignee: Piaggio and C SpA
Current assignee: Piaggio and C SpA
Priority date: 1985-02-22
Filing date: 1985-07-23
Publication date: 1986-05-14
Also published as: IT8520885V0

Abstract

The utility model relates to an automobile headlamp. The utility model is characterized in that the cross section of the associated reflecting mirror is composed of arced lines with paraboloids, the focus of each paraboloid is entirely positioned in the center of the lamp bulb.

Description

Automobile headlamp

The invention relates to motor vehicle headlamp.

As everyone knows, be generally used for the AFH and the degree of depth of the headlight of power actuated vehicle, to a great extent, limited the design of front lamp of vehicle of the same race peripheral region, and, the attractive in appearance and serviceability of headlight there is very important influence.

As everybody knows, the degree of depth of headlight is the function of its forward dimension, and this is that its focus is positioned at the bulb center because the headlight section must be got parabolic shape.Therefore, collateral security light has identical directional characteristic, and the degree of depth is big more, and the forward dimension of headlight is just big more.

When headlight is used on the automobile, viewpoint from Design and Features, above-mentioned requirements can't be brought special defective, but, when headlight is used for being contained in it the self-propelled vehicle on the body usually, can be easy to see that the size of the degree of depth can influence the aesthetic feeling and the maneuvering performance of driving to a great extent, this point can be explained with the static momentum size of headlight of the same race.

The objective of the invention is to relatively have the identical littler headlight of radiation direction characteristic depth dimensions with the headlight of known technology for self-propelled vehicle provides a kind of.

In order to reach purpose of the present invention, the motor vehicle headlamp that is provided is characterised in that relevant catadioptre section is made of parabola, and its focus all is positioned at the bulb center.

According to a preferred embodiment, the catadioptre of headlight is to be made of two pairs of parabolas, and is a pair of in another right inboard, radially connects each other.

Particularly interior parabola can be limited to the determined horizontal segment of catadioptre.

Under these circumstances, the entire emission mirror can be made of above-mentioned two sections parabolas, inner one section is limited to the catadioptre horizontal segment, other have two sections parabolas lay respectively at bulb about, the purpose of epimere is that the light for dim light in the vertical surface provides correct direction, and and hypomere be the lamp provider of country together to and photometric quantity, also have a parabolic sections to be positioned under the bulb at last, aforementioned parabolic down inboard so that necessary last beam split to be provided, like this, from the front, headlight is supreme greatly to be rectangle, and its top is positioned at horizontal surface.

Feature of the present invention and preceence can have a better understanding by description with reference to the accompanying drawings.Accompanying drawing is the embodiment of motor vehicle headlamp, wherein:

Fig. 1 is the interior front elevation of headlight reflectors;

The central horizontal section view that Fig. 2 dissects along II-II for Fig. 1;

The central horizontal section view that Fig. 3 dissects along III-III for Fig. 1;

Seen in figure, motor vehicle headlamp represents that with 1 in fact it comprise catadioptre 2, is roughly the preceding frame 3 of rectangle, preceding frame glass 4, king light 5, king light seat 6, parking additional lamp 7 and auxiliary lamp socket 8.Headlight 1 is intended to install the growth limit at level attitude.

Catadioptre 2 is divided into some parabolic sections again.

It should be noted that especially, in the certain level section, main parabolic 9 the core (see figure 2) of catadioptre 2 is replaced by new parabola 10, its position is more by the lining, and has identical focus 11 with leading portion, but the more close focus in its summit produces two

parabolic sections

12 and 13 and two symmetrical

parabolic sections

14 and 15 that belong to second parabola 10 of more leaning on the lining that belong to the symmetry of main parabolic sections 9 thus.Parabolic sections 12 radially links to each other with 17 by section 16 respectively with 15 with 14 and 13.

Can see that from Fig. 2 the degree of depth of the catadioptre 2 of headlight 1 is the P value, the value P that is had when getting the complete shape of leading parabola 9 with the horizontal segment catadioptre ₁Little.

According to above feature, interior parabolic 10

symmetric sections

14 and 15 has and main parabolic 9

symmetric sections

12 and 13 identical focuses 11, this has just guaranteed that

inner segment

14 and 15 light flux reflected are in main parabolic 9

symmetric sections

12 and 13 light flux reflected, thereby, guaranteed light quantity required directional characteristic on horizontal surface.From the viewpoint of chaufeur, upwards should guarantee effective visiblity and make all directions light of outgoing be positioned at horizontal surface with motor-driven vehicle going each side concerned.On the contrary, needn't guarantee that light also has directional characteristic in vertical plane surface.Therefore, external symmetry parabola (12,13) is only relevant with catadioptre (2) horizontal segment with interior symmetry parabolic (14,15).

Catadioptre comprises that also two lay respectively at the upper and lower parabola of bulb 5, with 18 and 19 expressions, and has identical curvature, in addition, also has a parabola 20,, and connects with disc parabolic 19 more by the lining than down.

Epimere (18) is with thinking that dim light light is provided at the suitable direction in the vertical plane surface, and for the direction and the photometric quantity of country's lamp, epimere 18 and hypomere 19 all work, and following inner segment 20 provides necessary last beam split.

Fig. 3 has shown the

parabola

18,19 of catadioptre 2 and the situation of 20 control country's lamps and dim light direction in vertical surface especially.

From the above, obviously, aforementioned purpose of the present invention, promptly be to provide a kind of headlight, this light fixture has and the identical directional characteristic of making by known technology of headlight, and has size less on depth direction, and this is because headlight reflectors is divided at least two pairs of parabolas, a pair ofly be positioned at another to the inboard, two pairs of identical focuses that have at the bulb center.

Claims

1, motor vehicle headlamp is characterised in that relevant mirror portion is made of the parabola cambered surface, and its focus all is positioned at the bulb center.

2, according to the motor vehicle headlamp of claim 1, be characterised in that catadioptre is made of two pairs of symmetrical parabolas, a pair ofly be positioned at another to the inboard, link to each other with disc each other.

3,, be characterised in that two pairs of symmetrical parabolas are the horizontal segment of catadioptre according to the motor vehicle headlamp of claim 2.