CN102252250B

CN102252250B - Headlamp for vehicles

Info

Publication number: CN102252250B
Application number: CN201110112402.7A
Authority: CN
Inventors: 约瑟夫·皮尔斯汀格
Original assignee: Zizala Lichtsysteme GmbH
Current assignee: ZKW Group GmbH
Priority date: 2010-04-22
Filing date: 2011-04-22
Publication date: 2014-06-11
Anticipated expiration: 2031-04-22
Also published as: EP2381167A3; EP2381167B1; CN102252250A; EP2381167A2; AT509816A1; AT509816B1

Abstract

The headlamp has a cylindrical casing comprising a covering shaft that is arranged between a reflector and a lens. A protrusion unit is extended away from one of focal lines for dim light in a circumferential or rotational direction of the covering shaft. Normal distance of the cylindrical casing to a rotation axis is smaller than normal distance of a cylindrical shaped casing surface of the covering shaft, where a section of the focal line for dim light lies at the latter distance. The light exhibits reduced gap to the rotation axis.

Description

Vehicle head lamp

Technical field

The present invention relates to the headlamp of vehicle, it comprises reflector, lens and diaphragm axle, this diaphragm axle is placed between reflector and lens, and this diaphragm axle can be conditioned in two or more turned positions round rotating shaft, this rotating shaft level and laterally extend to optical axis, and this diaphragm axle is with the jacket surface of diaphragm axle, this jacket surface in each turned position with at least one focal line, this focal line produces photodistributed "cut-off"line, this diaphragm axle does not have any focal line or jacket surface between section photodistributed focal line of light and the photodistributed focal line of distance light, the photodistributed focal line of distance light is shorter from the vertical range of rotating shaft than cutting the photodistributed focal line of light from the vertical range of rotating shaft.

Background technology

Diaphragm axle for generation of different light images is known at large.Distance light focal line or focal line district follow hard on the focal line boot region of many this kind of focal lines (or with) that cuts light, and the focal line that cuts light is for example dipped beam focal line or the light focal line for throwing light on highway.By by diaphragm axle around its rotating shaft rotate to realize be converted to distance light light distribute.Between the region of light and distance light region, do not there is the effectively focal line of (optically effective) of optics cutting.But, can reduce in practice the materials of diaphragm axle so that the weight of diaphragm axle is reduced.

When diaphragm axle is turned to the position of distance light from cutting the position of light, the focal line that cuts light is rotated from its position and leaves, and in this position, it is backward with the direction towards reflector and downward clearly projection of direction.Therefore more light can arrive space outerpace, and this "cut-off"line is also no longer by clearly projection.Finally, diaphragm axle turns to and can produce the photodistributed position of distance light.Because the position of distance light focal line is far below the position of focal line of cutting light, and therefore can be in the focus of lens or reflector, this focal line can be by clearly projection in light image yet, but this desired effect just.

Due at the configuration that cuts diaphragm axle while changing between light light image and distance light light image, the problem producing is at this system middle part, as in the middle part finding with respect to its diaphragm axle extending longitudinally along rotating shaft, the light of the light ratio that can arrive via described diaphragm axle in frontier district is more.This is because described reflector mainly concentrates on described zone line by the light sending equally.Therefore, on fuzzy "cut-off"line, obtain bright luminous point in the centre of light image, described luminous point has disturbed light image and has been considered to be unwelcome.

Summary of the invention

The object of the present invention is to provide as the diaphragm axle as described at the beginning, wherein can in light image, not produce luminous point, or reduce widely the brightness of luminous point.

This object realizes by following mode: according to the present invention, central region at diaphragm axle is provided with protrusion, as finding, this protrusion is located at the part extending longitudinally along its rotating shaft with respect to diaphragm axle, and the contiguous focal line that cuts light, protrusion from cut light focal line away from and extend out, and extend towards circumference or the rotation direction of the imaginary cylindrical sheath of diaphragm axle haply, imaginary cylindrical sheath is less than or equal to the vertical range of the cylindrical sheath surface distance rotating shaft of diaphragm axle apart from the vertical range of rotating shaft, this section that wherein cuts the focal line of light is positioned at the position nearest apart from rotating shaft.

By being provided with according to protrusion of the present invention, can cover the region that occurs undesirable luminous point in light image, cover from reflector by the central region of diaphragm axle those light that send and that produce luminous point.Due to protrusion is arranged in imaginary cylindrical sheath especially according to the present invention, and be therefore positioned under the focus (or focal line) of lens, therefore this protrusion can clearly not be projected in light image, so that it reduces widely on the one hand or has eliminated luminous point completely, and itself can not produce on the other hand any undesirable effect (similar lens clearly).

Preferably, protrusion along the direction of circumference extend and from the focal line that cuts light away from, in this way, protrusion is agley away from the imaginary cylindrical sheath in rotor shaft direction.

Described in the region distance of described protrusion, farthest, thereby described protrusion is to be at utmost positioned at imaginary cylindrical sheath in rotating shaft, and when it is in the time that circumferencial direction is progressive towards the focal line of distance light, these regions can further be reduced from the distance of described rotating shaft.This makes in the region from cutting light described undesirable luminous point of light image while becoming distance light progressive harmoniously.

In other words, in the time that the front end (nose) of described protrusion is nearer than the rotating shaft of (it is the end that faces the focal line that cuts light) distance described Zhou center, rear end or described diaphragm axle, be, favourable.

The surface of protrusion is not positioned in the focus or focal line of lens, but it is positioned under the focal line of this focus or lens or is positioned to the full extent the position with the focal line of lens with same height.

In the specific embodiment of headlamp of the present invention, be also provided with: protrusion in the bottom of its contiguous focal line that cuts light than it and bottom is opposed and the edge that extends in parallel with the focal line of section light is wider.

The present embodiment has reflected the typical shape of undesirable luminous point in light image, and it is wider in compare Gao region, Bi Qi position, compare Di region, position equally.

The size of described luminous point and the size of corresponding described protrusion depend on the configuration of described reflector substantially.The general value that described protrusion extends out in bottom is 10 ° of about +/-, and " freedom " of described protrusion end extends beyond 4 ° of about +/-to left/right in this case.So luminous point can with identical to the full extent extension, coating covers.It is desirable to, in order completely luminous point to be covered, described protrusion should be same with described luminous point large or slightly larger than it.The value that has proved described protrusion is applicable to larger about 1 ° to 2 ° than the value of described luminous point.

In specific embodiments of the invention, the wing that bottom is connected to its opposed edge extends with straight line substantially.The described protrusion of this shape can be produced very simply and can carry out more simply the calculating of optics aspect.

If needed, the described wing also can be with inside or bandy shape.

Described luminous point is symmetrical with respect to the optical axis of described system conventionally.Therefore in the time that protrusion is symmetrical with respect to the optical axis of headlamp, will be suitable.

Brief description of the drawings

Referring to accompanying drawing, the present invention will be described in more detail, wherein:

Fig. 1 has shown according to the three-dimensional front view of the inclination of the projection system with diaphragm axle of the present invention;

Fig. 2 has shown the projection system in Fig. 1, has removed additional diaphragm;

Fig. 3 a has shown the stereogram of diaphragm axle according to the present invention in the time of dipped beam position;

Fig. 3 b has shown the diaphragm axle of Fig. 3 a watching from the position of Fig. 3 a, the opposite direction of view direction and light outlet above;

Fig. 3 c has shown that by example the dipped beam light that uses the projection system of Fig. 1 to produce distributes,

Fig. 4 a has shown the stereogram of diaphragm axle according to the present invention in the time sending the position of highway light;

Fig. 4 b has shown the front view of described diaphragm axle in the time sending the position of highway light;

Fig. 4 c has shown the distribution of highway light by example;

Fig. 5 a has shown that diaphragm axle according to the present invention " opens " high beam, i.e. stereogram in the time being converted to the centre position of distance light;

Fig. 5 b has shown the front view at the diaphragm axle of the position of Fig. 5 a;

Fig. 5 c has shown that the light in the time of " opening " high beam distributes;

Fig. 5 d has shown the cross-sectional view of projection system, by example correct as shown in Figure 5 c opening the high beam time distribute in mistake;

Fig. 5 e has shown according to the detailed view of the diaphragm axle of the diagram of Fig. 5 d;

Fig. 6 a has shown the stereogram of described diaphragm axle in the time sending the position of distance light;

Fig. 6 b has shown the front view of described diaphragm axle in the time of the position of Fig. 6 a;

Fig. 6 c has shown the distribution of distance light by example;

Fig. 7 a has shown the stereogram of described diaphragm axle in the time of the position of part distance light;

Fig. 7 b has shown the front view of described diaphragm axle in the time of the position of Fig. 6 a;

Fig. 7 c has shown the distribution of part distance light by example;

Fig. 8 a has shown the stereogram of described diaphragm axle in the time sending symmetrical dipped beam position;

Fig. 8 b has shown the front view of described diaphragm axle in the time of the position of Fig. 8 a;

Fig. 8 c has shown the symmetrical of dipped beam by example;

Fig. 9 a has shown the sectional view of described diaphragm axle along the line A-A of Fig. 3 b;

Fig. 9 b has shown the sectional view of described diaphragm axle along the line B-B of Fig. 3 b;

Fig. 9 c has shown the sectional view of described diaphragm axle along the line C-C of Fig. 3 b;

Fig. 9 d shown according to the front view of diaphragm axle of the present invention, this diaphragm axle band is promising have can pivotable lens produce the headlamp of the light turning to and the amendment of establishing;

Fig. 9 e has schematically shown that with pivotable lens are to produce two kinds of distributions of dipped beam of the light that turns to;

Figure 10 a has shown according to the detailed view of diaphragm axle of the present invention, is in the region of a section of diaphragm axle of being responsible for part distance light;

Figure 10 b has shown the zoomed-in view in the region of Figure 10 a;

Figure 10 c has shown the photodistributed schematic diagram of part distance light;

Figure 10 d has shown the schematic diagram of the groove in the diaphragm axle of Figure 10 a, and

Figure 10 e-10i has shown the cross section of different grooves.

Detailed description of the invention

Fig. 1 has shown according to the vehicle head lamp with diaphragm axle 11 of the present invention (projection system) 1.Headlamp 1 comprises that the lens 4 that are attached in lens carrier (not shown) for example (are shown in Fig. 5 d).Thereby described lens carrier can be around the longitudinal axis 300 pivotables around the longitudinal axis 300 pivotable lens 4.Some according to the present invention, diaphragm axle 11 are made and amendment is also relevant with the projection system of the lens with can not pivotable shown herein.If amendment especially or specially with can be relevant around the lens 4 of the longitudinal axis 300 pivotables, this understands and mention clearly in this article.

Headlamp 1 further comprises light source 4a and reflector 3, is installed in adapter 2 at reflector described in illustrated variant.All relevant portions are all fixed to this adapter 2, the drive unit 5 (for example stepper motor) that for example makes diaphragm axle 11 rotate around its rotating shaft 100.Rotating shaft 100 is positioned at described diaphragm Zhou center, and it is not eccentric.

The middle part of the coil of light source 4a or described light source is applied to the first focus of described reflector.Diaphragm axle 11 is arranged to its focal line extension and the second focus through described reflector.The second focus that lens 4 are arranged to its focus or focal line extends and pass described reflector.

Reference numeral 10 has been indicated the whole diaphragm arrangement in headlamp 1, and outside membrane removal bobbin 11, diaphragm arrangement also comprises (adding) diaphragm or shade 6.Described shade 6 is absorbed in the light sending under diaphragm axle 11.It is identical or slightly higher than it with the height of the rotating shaft 100 of described axle that the upper limb 6 ' of shade 6 preferably extends to.

Diaphragm axle 11 is fixed to adapter 2 rotationally.For this purpose, shown in variant, adapter 2 has formed a part for cartridge housing 8, and shade 6 has formed the Part II 7 of this cartridge housing.The spherical bearing 9 of establishing for the rotating shaft 100 of diaphragm axle 11 is accommodated in described cartridge housing.

Also can without any spherical bearing in the situation that, mainly and directly for example by the first-class mode of clamping connection, described bearing be installed on described adapter.By using suitable material can make described adapter reduce to minimum because described axle rotates the wearing and tearing that cause.

Described axle itself can be made up of heat-resisting plastics, pottery, metal or its analog.

Fig. 2 has shown the layout of Fig. 1 again, but has removed shade 6.

Diaphragm axle 11 can be conditioned in the turned position at two or more around the horizontal rotating shaft 100 that laterally stretches to optical axis 200, the jacket surface 12 of diaphragm axle 11 in each turned position with at least one focal line to produce photodistributed "cut-off"line.

Fig. 3 a has shown the region of jacket surface 12, and with many focal lines 20, the light that cuts light (cut-off) taking generation form as dipped beam distributes for it, and the light that cuts light taking generation form as highway light distributes with many focal lines 21.Further show and produced photodistributed focal line 22 far away.

In Fig. 3 b, shown that diaphragm axle 11 is placed on the wherein position of of the focal line 20 that dipped beam started, this focal line produces described photodistributed "cut-off"line in light image.Fig. 3 c has shown the corresponding dipped beam light distribution 1000 with "cut-off"line 1001.

Fig. 4 a has shown that it is a little further rotated as the axle 11 in Fig. 3 a, thus now focal line 21 wherein one can start another section of light light and distribute, for example highway light.Fig. 4 c has shown that the highway light of the "cut-off"line 2001 producing with focal line 21 distributes 2000.

The diaphragm axle of the vehicle head lamp that is used for producing different light images is known.Because the expansion of this diaphragm axle is also extended along the direction of light outlet, so with have the planar diaphragm (diaphragm that thickness is little and thin) of inappreciable expansion along the direction of light outlet compared with, there will be following problem: the undesirable upper area that can arrive the jacket surface of described diaphragm axle via the light of described reflector reflection, and dispersed outside therefrom, become the light of undesirable dispersion, under some environment this can cause law unallowed dazzle the eyes or light image in shading value.This problem is also present in the film bobbin that diameter is little, because it has also shown certain expansion along the direction of light outlet.

This problem especially appears in the light distribution that cuts light.It is for example dipped beam (symmetry, asymmetric), highway light, city road light that the light that " cuts light " distributes.These light are distributed in the regulation of for example ECE/SAE and are defined.

The problem of the light of undesirable dispersion has been discussed in U.S. Patent number 2009/0154187A1, its shown as start time as described in diaphragm axle.The diaphragm axle showing in this article comprises groove, its by each other apart from be distributed in the part of jacket surface of described diaphragm axle its and extended across at least one complete half (visible along described rotating shaft) of described diaphragm axle.But, even if noticed and use this diaphragm axle, can not correct satisfactorily the problem of the light of the dispersion of the light that cuts light in distributing.

In order to address this problem, with activation conform with cut light legal light value and (almost) can not produce the light of undesirable dispersion, the jacket surface 12 of diaphragm axle 11 is included in the

groove

30,31,32,33,34,35 in the region of

focal line

20,21 of at least one section of light, described groove is parallel to haply the rotating shaft 100 of diaphragm axle 11 and extends,

contiguous groove

30,31; 31,32; 32,33; 33,34; 34,35 as along the rotation of diaphragm axle 11 or circumferencial direction finding directly be adjacent to each other, and by

common edge

40,41,42,43,44 by separate.At Fig. 3 a and 4a and especially shown these grooves in Fig. 8 a, Fig. 9 a, 9b and 9c have at length shown these grooves.

Diaphragm axle 11 as shown in the figure comprises low-beam region, also comprises the region of highway light.Therefore, if shown in two regions in be provided with rib, be favourable.

The gradient that ether is large arrives described diaphragm axle light from above is by described rib " seizure " and be dispersed and penetrate back for example headlamp, so that can not produce the ray of undesirable dispersion again, maybe it can be reduced in large quantities (Fig. 9 a to 9c).Fig. 9 a has shown the light in the region of the jacket surface that drops on described diaphragm axle, described region is smooth, thereby do not comprise that any groove is reflected into the space beyond described headlamp with light thereon, and the light that drops on described rib is drawn and is back in described headlamp.

The light of " ideal " arrives described diaphragm axle with the less gradient, it is absorbed by described diaphragm or can arrive space outerpace via described focal line, so that projects in light image cutting light (line (cut-offline) of terminator (cut-offlimit), light and shade cut-off) according to the effective focal line of optics in the current location in described diaphragm axle.Rib on described jacket surface can not make "cut-off"line completely clearly be cast out.In general, the actuator of described diaphragm axle cannot accurately be placed to the part that two edges between rib are always described focal lines diaphragm axle.Otherwise described diaphragm axle also can be positioned in two centre positions (not having edge clearly to be cast out in optics optimum position) between edge.This causes "cut-off"line fuzzy a little, no longer completely clear, anyway it more can vision protection, therefore this does not have any problem, on the other hand or even favourable.

Described axle can, further with light absorbing black surface, can further subtract paucidisperse light by it.

Diaphragm axle 11 comprises jacket surface 12, it is arranged to along the circumferential direction, as rotation direction finding, (Fig. 8 a in the rotational angle range δ limiting, Fig. 9 a), it is with forming many layouts of cutting the focal line district of the

focal line

20,21 of light, and multiple groove is arranged in the described rotational angle range δ of jacket surface 12.

In theory, under the condition of always diaphragm axle accurately being located at the actuator of described diaphragm axle, only need (clearly) focal line.Because this is unpractical, so place the positioning precision that the rotational angle range of the described focal line that cuts light should be a bit larger tham described actuator.

Because likely there are other mistakes (except the inaccuracy of location), so in order to ensure the reliability of process, it is favourable providing with the rotational angle range that configures greatlyr.In the time using stepper motor, it may be lost in operation step and can have forevermore the error of 1 °, for example, for example, until next location (positioning in the time starting vehicle).If but the focal line of same-type is placed in enough large rotational angle range, this step of losing is just no problem.

Only has highly accurate and relatively costly actuator just likely accurately by described diaphragm axle location.According to the above, this there is no need completely, and only can allow headlamp unnecessarily more expensive.Because described diaphragm axle is with the focal line (i.e. many focal lines of for example dipped beam etc.) of many adjacency of same type, so only described diaphragm axle need to be placed to a wherein dipped beam focal line for dipped beam be the position in starting if will produce dipped beam.

Needed focal line is distributed on described diaphragm axle " sheath " surface.In the time having the focal line of six types, each type is all provided with the arc section of 60 ° of for example described jacket surface (in equally distributed situation; Also may there be other to distribute).If focal line only uses a little angular range, on the sheath of described diaphragm axle, just have a large amount of dead sectors, this is disadvantageous.Therefore, it is suitable that focal line uses 60 ° of maximum, to obtain reliability in operation.

In Fig. 8 a, the angular range that cuts light is designated as δ.Its angular range δ 1 by the focal line that is placed with dipped beam forms with the scope δ 2 of the focal line that is placed with highway light.

Under distance light, the height of the line that the minimum diameter of described axle is mainly ended by light and shade limits.With regard to the concrete headlamp with a certain length, for for example producing the highly distance light of 6 ° on H-H, just need diameter to be at least the diaphragm axle of 12mm.Be necessary to increase the needed space of rotating shaft.In the time that the diameter of the described shaft axis of supposition (rotating shaft (rotational shaft)) is 5mm, the diameter of described diaphragm axle reaches about 17mm.

According to the present invention, contiguous groove directly in abutting connection with and with edge by separate.Between groove and groove in fact or almost can produce the ray of undesirable dispersion without any jacket surface.

In Fig. 9 a to 9c, again at length show this situation, it has shown according to the sectional view of the diaphragm axle 11 of Fig. 3 A-A along the line, B-B and C-C.

When edge the 40,41,42,43, the 44th,, be favourable when at sharp the edge.Should between contiguous groove, produce as far as possible sharp edge, i.e. the transition with slightly pointed edge (conversion) region, to produce as far as possible the ray of minimum dispersion.In practice, the edge that produces this point has some restriction significantly.Depend on material, can obtain more or less by the edge of rounding, thereby can between described groove, provide by the transitional region of rounding.In this case, should attempt to make radius separately to keep tiny.

Edge 45 limits last groove 35.

In the time that

groove

30,31,32,33,34,35 relative to each other extends abreast, as shown, just can obtain simple production and the simple condition about optics seepage flow (optical percolation).

Described groove can also mainly along curve, for example, extend according to the focal line of same bending described lens.Thereby can obtain with the more best optical effect of the form of "cut-off"line.But production is very complicated.

Groove

30,31,32,33,34,35 is preferably disposed in the diaphragm axle 11 region 12m of centre substantially, as (seen Fig. 8 b) along rotating shaft 100 findings.Described reflector " is concentrated " light at zone line substantially, so that the ray of the strongest dispersion is derived from the zone line of described diaphragm axle substantially.Therefore, be not imperative at the mid portion of described diaphragm axle with peripheral hardware groove, and these regions on described axle are done to black conventionally completely enough.

In the time going back with reference to Fig. 3 b and 4b, can see that the

focal line

20,21 that cuts light comprises that straight line extends and be parallel to the first focal line section 20a, the 21a of rotating shaft 100 separately, and same straight line extends and is parallel to the second focal line section 20b, the 21b of rotating shaft 100.Two section 20a, 20b; 21a, 21b connect via straight three warmers line segment 20c, the 21c that extend obliquely with respect to rotating shaft 100.The first focal line section 21a is longer from the vertical range of rotating shaft 100 than the second focal line section 20b from the vertical range of rotating shaft 100.

Start from the focal line section 20c extending obliquely with respect to rotating shaft 100; 21c,

groove

30,31,32,33,34,, 35 extend distance, d enter the first and/or second

focal line section

20a, 21a; 20b, 21b, be preferably two focal line sections shown in entering.

Put in focal line section 20a, 20b; The distance d of 21a, 21b is equivalent to the angular range (measuring from the central point of light source) of 10 ° of +/-haply.This numerical value depends primarily on reflector.If the maximum of reflector is little, in the middle of described light can concentrate on consumingly, only extending 10 ° is also enough certainly certainly.If the maximum area of reflector is very large, may extend beyond 30 ° in both sides, for example 45 °.

If

groove

30,31,32,33,34,35 also inserts the focal line section 20c of inclination completely; 21c is best for subtracting paucidisperse ray.

Fig. 5 d has shown that Fig. 5 e has shown the sectional view of the amplification of diaphragm axle 11 through the projection system according to the present invention vertical cross-section diagram parallel with optical axis.Fig. 5 e has at length shown according to the sectional view of the groove of the present invention of Fig. 5 d.As shown, if

groove

30,31,32,33,34,35 at least forms with section, be provided with at least one section along its part extending longitudinally (with shaft parallel), and this is to form by two regions opposite each other, described region is extended toward each other with angle and is preferably arranged at least partly plane ε 1, ε 2, favourable especially for conceivable optical property.Thereby can be best by the light from above another plane from a plane reflection of described groove to described groove, and it is reflected back in described headlamp the most at last.

Two planes of described groove can intersect in the mode of acute angle each other, and the region of shifting to is each other arranged to flat sided straight to its intersecting area.Described " plane " generally include in process of production by the transitional region of rounding.As clearly illustrated in Fig. 5 e, it converges continuously each other.Therefore, it does not mainly relate to toward each other the plane of continuity, and relates to continue toward each other and part is arranged to plane and it departs from the plane of flat shape in transitional region.The transitional region of point is optically best, but this is inessential in function.Can change places and produce (more easily removing from mould) with the groove of the transitional region of rounding.

If the angle that the frontal plane ε 2 of

groove

30,31,32,33,34,35 extends with respect to jacket surface 12 than the back plane ε 1 of described groove is large, as the direction finding along light outlet, be further favourable for production.Especially, back plane ε 1 is relevant for production, it should be in the gradient with respect to described sheath Cheng Geng little, and frontal plane ε 2 should become the maximum gradient as much as possible with respect to described jacket surface, carrys out by this method to destroy as far as possible the light of maximum dispersions.

This relate on described jacket surface shown in this angle between plane and tangent line surface, the intersecting lens obtaining when plane is crossing with described jacket surface shown in described tangent line surface is included in.

Angle between two planes of groove itself is for example approximately 45 ° in the focal line region of highway light, and (Fig. 5 e) for example in the focal line region of dipped beam, to be approximately 90 °.

Go back again with reference to Fig. 4 a and 4b, can further recognize in the region of jacket surface of the described diaphragm axle of the focal line that cuts light of placing with the form of highway light, and the

edge

43,44 of separating

tank

33,34,35 with the first focal line section 21a of described dipped beam to the same vertical of rotating shaft 100 apart from extending and being parallel to rotating shaft 100.

But, in the region of the jacket surface of the described diaphragm axle of the focal line that cuts light of placing with the form of dipped beam therein, the

edge

40,41,42 of separating

tank

30,31,32,33 is at least farther in the vertical range between some section and rotating shaft 100 than the vertical range between the first focal line section 20a of described dipped beam and rotating shaft 100, as especially shown well in Fig. 3 a and 3b and Fig. 8 a and Fig. 9 c.If

edge

40,41,42 originally with cut the first focal line section 20a of light and be parallel to rotating shaft 100 from the identical vertical range of the vertical range of rotating shaft 100 and extend, then via the marginal portion protuberance tilting to the vertical range of rotating shaft 100 be that (Fig. 9 c) for farther marginal portion.Sliver is defined by statutory regulations.

In specific embodiment shown in described diaphragm axle, in rotational direction two regions of the jacket surface of above-mentioned diaphragm axle are arranged in tandem, so that likely by rotating described diaphragm axle, dipped beam is converted to highway light.

Therefore, the different distance at above-mentioned edge also causes the difference displacement (progressions) of the "cut-off"line 1001,2001 of dipped beam 1000 or highway light 2000.

From described figure, can see, provide that to be provided with from the vertical range of rotating shaft 100 are identical

many edges

43,44, and providing from the vertical range of rotating shaft 100 is farther

multiple edges

40,41,42 than the first focal line section 20a, the 21a that cut light from the vertical range of rotating shaft 100, in the region of cutting light, avoid the light of undesirable dispersion with activation.Described diaphragm axle does not need to locate especially accurately.Article two, the angle between edge (is shown in that Fig. 9 b) is about as much as the positioning precision of actuator used, is approximately 2 ° in its actuator using in reality.

Can also select larger angle.In specific embodiment, it is approximately 5 °, and selects by this way: in the time that described diaphragm axle is accurately placed in two grooves middle, light image is still acceptable.It is more accurate that described actuator can be placed.

Based in distributing according to the generation dipped beam light of the position of Fig. 3 a and 3b, (Fig. 3 diaphragm axle 11 c), by making described axle in rotating according to the position of Fig. 4 a/4b, just can reach the highway light shown in Fig. 4 c and distribute.

If described diaphragm axle is gone to the position shown in Fig. 6 a and 6b, described light distributes and is converted to according to the distance light light with "cut-off"line 4001 of Fig. 6 c and distributes 4000 from the light distribution that cuts light (being that highway light distributes under this situation).

Described section of light is formed by the focal line 22 of described diaphragm axle, and it can clearly not projected in light image in this situation, and this is desirable and can reaches by this way: the focal line 22 of diaphragm axle 11 is positioned under the focal line of described lens significantly.

The vertical area that the focal line 22 of distance light extends with respect to direction along light outlet is symmetrical and extends with the form of recessed curved (concave bend).The focal line 22 of distance light from the vertical range of rotating shaft 100 further than the focal line 21 that cuts light from the vertical range of rotating shaft 100 for close to more.

The focal line 22 of distance light and the last item focal line 21 of section light are positioned to be in rotational direction separated from each other and exceed 90 °, conventionally even exceed 120 °.

Cutting between this last item focal line 21 of light light distribution 2000 and the focal line 22 of distance light light distribution 4000, described diaphragm axle is without focal line and jacket surface, between these focal lines without or only have considerably less diaphragm material on rotating shaft, in any case but its distance from the focal line of described lens is farther than the spacing of the focal line of distance light and distance light focal line.

The focal line sheath region of many this focal lines (or with) that cuts light, the focal line of the focal line of for example dipped beam or highway light, is followed rear by the focal line of distance light or focal line region.Distribute by making described diaphragm axle be converted to distance light light around its rotating shaft.There is no with the effective focal line of optics cutting between the region of light and distance light region.But, in order also to reduce the weight of described diaphragm axle, can greatly reduce in practice the materials of described diaphragm axle.

In the time that described diaphragm axle is torqued into the position of distance light from cutting the position of light, the position that the focal line of described section of light is clearly projected from it is reversed to rear towards described reflector and downward direction.Therefore, more light can arrive space outerpace and "cut-off"line also can clearly not projected again.Finally, described diaphragm axle is reversed to producing the photodistributed position of distance light, thereby wherein focal line 22 is optically that effectively (Fig. 6 a, Fig. 6 are b).Because the focal line 22 of distance light is placed more much lower than cutting the focal line of light, thus can be in the focus of described lens or described reflector, so described focal line also can be clearly incident upon in light image, but Here it is desired effect.

In Fig. 5 c, shown described luminous point, its Reference numeral is designated as 3002.

Do not appear in light image or greatly reduce its brightness in order to ensure luminous point 3002, according to the invention provides protrusion 60, it is arranged on the zone line of diaphragm axle 11, as the finding extending longitudinally along its rotating shaft 100 with respect to diaphragm axle 11, contiguous with the focal line 21 that cuts light, protrusion 60 from cut light focal line 11 away from and extend out, and extend towards circumferencial direction or the rotation direction of the diaphragm axle 11 along imaginary cylindrical sheath 50 haply, imaginary cylindrical sheath 50 from the vertical range of rotating shaft 100 than the cylindrical sheath surface 50 of diaphragm axle 11 from the vertical range of rotating shaft 100 for close to more or equate, wherein the focal line 21 of this section section light is placed in the distance nearest from rotating shaft 100.

Fig. 3 a, 3b, 4a, 4b and Fig. 5 a and 5b have clearly illustrated described protrusion.Fig. 5 a and 5b have shown that the centre position of diaphragm axle 11 is in the conversion cutting between light and distance light, and protrusion 60 enters described light path.Fig. 5 d has shown the vertical cross-section diagram of the protrusion 60 of described headlamp, and Fig. 5 e has shown the zoomed-in view of described axle in the region of protrusion 60, and it has also shown the connection with respect to

cylindrical sheath

50,51.

By providing according to protrusion 60 of the present invention, can cover the region that bad luminous point 3002 occurs in light image, cover those light that penetrate and produce described luminous point from described reflector via the zone line of described diaphragm axle.

Diaphragm axle 11 also covers light S1 shown Fig. 5 d even without protrusion 60.Light S2 to S4 sends in higher position and can produce luminous point 3002, protrusion 60 stops described light to penetrate from headlamp, and penetrate more flatly but in described light image, be not crucial higher light S5 can without any problem penetrate via described axle.

Due to by protrusion according to being arranged in especially as the present invention in imaginary cylindrical sheath 50, and be therefore positioned under the focus (or focal line) of described lens, protrusion 60 can clearly not projected in light image, so that it has reduced widely on the one hand luminous point or removed up hill and dale luminous point, and itself can not produce on the other hand any undesirable effect (as lens clearly).

Protrusion 60 is in its maximum light efficiency surface in the level of imaginary cylindrical sheath 50, and in protrusion 60, having not a particle of can be farther apart from rotating shaft 100 and imaginary cylindrical sheath 50.

Preferably, as clearly illustrated in Fig. 5 e, make protrusion 60 along the direction bending of rotating shaft 100 and leave imaginary cylindrical sheath 50 by along the circumferential direction extending from the focal line 21 that cuts light to leave.

Described in the region distance of described protrusion, farthest, thereby described protrusion is to be at utmost positioned at imaginary cylindrical sheath in rotating shaft, and in the time that it is along the circumferential direction progressive towards the focal line of distance light, these regions can further reduce from the distance of described rotating shaft.This makes in the region from cutting light described undesirable luminous point of light image while becoming distance light progressive harmoniously.

In other words, when calculate its distance described Zhou center from the rotating shaft of described diaphragm axle, when front end (nose) 62 of described protrusion is nearer than rear end 61 (it is the end that faces the focal line that cuts light), be, favourable.

Therefore, the bottom 61 of nose 60 is positioned at the height or under it of the focal line of described lens to the full extent, and towards the axes of rotation skew of described diaphragm axle to its end 62.

According in the specific embodiment of headlamp of the present invention, further provide protrusion 60 in the bottom 61 of its contiguous focal line 21 that cuts light than it and bottom 61 is opposed and the edge 62 wider (Fig. 5 a, 5b) that extends in parallel with the focal line 21 of section light.

This embodiment has reflected the typical shape of undesirable luminous point in light image, and it is wider in compare Gao region, Bi Qi position, compare Di region, position equally.

In specific embodiments of the invention, the

wing

63,64 that bottom 61 is connected to its opposed edge 62 extends with straight line substantially.The described protrusion of this shape can be produced very simply and can carry out more simply the calculating of optics aspect.

If needed, the described wing also can be with inside or bandy shape.

Described luminous point is symmetrical with respect to the optical axis of described system conventionally.Therefore in the time that protrusion 60 is symmetrical with respect to the optical axis 200 of headlamp 1, will be suitable.

Must further notice that protrusion 60 is not located immediately at the focus of described lens, thereby can not projected by " clearly ".

In the time of further rotation diaphragm axle 11, described system is from distance light light distribute 5000 the position of generating portion distance light light that (Fig. 6 a to 6c) move to described diaphragm axle that distributes, and with the "cut-off"line with Reference numeral 5001, (Fig. 7 c) cuts light progressively.Fig. 7 a and 7b have shown the progress that produces this part photodistributed focal line 23 far away.Depend on the turned position of described axle, the shadow region on the right can change within the scope of it.Provide two to have the horizontal dotted line (double-head arrow) of spacing to be explained.This is different the reaching of vertical range from rotating shaft 100 by the indivedual focal lines in the region 12a of the jacket surface of described diaphragm axle.

As shown in Fig. 7 a and 7b, diaphragm axle 11 comprises that the jacket surface 12 of a section is to provide the focal line of one or more generating portion distance light.Each line 23 of generating portion distance light comprises the first straight focal line section 23a, and it is positioned at along the rotation of diaphragm axle 11 or circumferencial direction in for example columniform mode of bending, is disposed in the first sheath region 12a of diaphragm axle 11.As above mentioned, the indivedual focal lines in the region 12a of the jacket surface of described diaphragm axle are likely different from the vertical range of rotating shaft 100, and therefore the shadow region on the right in height can change.

The second straight focal line section is positioned at the second sheath region 12b of diaphragm axle 11, and described sheath region is for example plane substantially, and the second sheath region 12b is nearer apart from rotating shaft 100 than bending boot region 12a.Two sheath region 12a, 12b are connected to each other by discontinuous surperficial 12c.As shown in drawings, then sheath region 12b rises towards the edge of described diaphragm axle.

Shown in variant, noncontinuous surface 12c is with the layout of plane.The advantage of the noncontinuous surface of plane is: by reversing described diaphragm axle, can improve or reduce the "cut-off"line (for this purpose, need to be arranged in respectively described jacket surface with the focal line of differing heights) in described shadow region.Meanwhile, being converted to distance light region in the distribution of part distance light light is to remain unaffected, and, in the time that described diaphragm axle is reversed, distributes constant at light described in this region.And for above-mentioned reasons, noncontinuous surface 12c is preferably perpendicular to rotating shaft 100, as shown equally in Fig. 6 a and 6b.

For example, in european patent number EP2157362A1, comprise that other objects and the diaphragm axle for generation of one or more focal line of part distance light are known, but in this case with bending noncontinuous surface.The in the situation that of part distance light, can be blocked/cover in the photodistributed region of vehicle or people present " normally " distance light.If because car for example distributes with distance light light and travels because of the high speed on highway, and car appear at oneself runway before, only may cover the photodistributed region at the vehicle place of described appearance.Can be transformed in other cases dipped beam, and next optional in this situation.Similarly, in the situation that having head-on traffic, part distance light just can cover head-on residing this region of traffic, and described photodistributed all the other regions distribute and are illuminated according to the distance light light of " normally ".

Distribute in order to obtain this light, as mentioned above, diaphragm axle comprises at least two focal line sections or two sheath regions.In the vertical direction, described two focal line sections are converged each other via discontinuous part.Therefore, because diaphragm axle is along the extension, space in the direction of light outlet (spatial extension), so obtain noncontinuous surface in described diaphragm axle unavoidablely, as known in european patent number 2157362A1, described discontinuous surface can be arranged to planar fashion or bend mode, and this depends on the concrete structure of the focal line of part distance light.

In the case of the planar patch of plane, this discontinuity in the focal line of described light image is unchallenged.But, the in the situation that of described diaphragm axle, because the extension, space of described diaphragm axle obtains discontinuous surface, so obtain undesirable effect in light image.Particularly, undesirable shaded effect appears in the photodistributed distance light of described part distance light region, especially in the transfer process of vertical "cut-off"line, occurs when the conversion between described shadow region and distance light region.

Fig. 7 c has shown the photodistributed desirable light image 5000 of the part distance light of "cut-off"line 5001, is not with any undesirable effect in described light image.But in fact, it is mainly the undesirable effect with the form of the dash area near the vertical line of described "cut-off"line that discontinuous surface can be brought.Figure 10 c has shown the distance light light distribution 7000 with the part of this effect.The part that shaded area during described light distributes has diagrammatically been shown the light image 7000 being covered.

The distance light light of part distribute 7000 "cut-off"line 7001 ' and not being both in Fig. 7 c: said axle is placed on different a little turned positions, the shadow region on the right side be positioned at compared with low level and shadow region further to the right and extension left.By the function that light is turned to of described headlamp, as by lens as described in pivotable, and shadow region is further extended left.But this only occurs at edge.The practical problem of the described hachure part shown in Figure 10 c is mainly also to there will be in almost any position of part distance light.

According to the present invention, in order to reduce or thoroughly to eliminate these the undesirable dash areas in the photodistributed distance light of described part distance light region, now revise diaphragm axle 11, so that one or more depressions 70 to be provided in noncontinuous surface 12c.

Due to these depressions 70 in noncontinuous surface 12c, originally can be blocked and the light that can not arrive space outerpace can arrive space outerpace in a controlled manner, can be by undesirable the region covering thereby illuminate originally.Figure 10 a and 10b have shown the noncontinuous surface 12c with depression 70 in detail.

Therefore, in the time that described at least one depression 70 is arranged to extend along the direction of light outlet, especially a focal line that is placed on part distance light when described diaphragm axle is that optics is effective, when to be its focal line be projected in described light image in the turned position of (described "cut-off"line is only clearly incident upon in the region that light covered) in the mode of "cut-off"line, light thereby can arrive and want the region that is illuminated in the space beyond described headlamp in best mode.

As shown in Figure 10 a and 10b, in the time that described one or more depressions 70 are arranged to the microscler continuous depression 70 of the direction of pointing to described light outlet, this is especially favourable in simple production with in controlling the passing through of undesirable light.

Microscler depression is the sunk part that length is greater than width.The described form that is arranged grooving 70 in noncontinuous surface 12c that is recessed in.Edge between two grooves or surface are arranged on the height same with the remainder of described noncontinuous surface.

Preferably, the front end 78 of at least one depression 70 diaphragm axle 11 from back-reflection device 3 extends back towards the direction of that one end 79 towards reflector 3.Enter the light of depression/groove thereby can penetrate from it through described depression and in depression 70 end 78, and (Figure 10 b) to arrive space beyond described headlamp.

Have been noted that in specific embodiments of the invention, when at least one depression 70 is while approximately extending to the middle M of noncontinuous surface 12c of diaphragm axle 11, as the direction finding along light outlet, this is preferred for illuminating by undesirable the region covering.

As shown in Figure 10 b, straight line G, it is at described rear portion towards intermediate restriction groove 70, and being that the effective focal line of optics of part distance light is crossing by the plane of the rotating shaft 100 through diaphragm axle 11 with in the region of bending jacket surface 12a obtains.Because described groove does not produce any light efficiency, so after it needn't one fixes on this line G.

In a specific embodiment of the present invention, microscler depression 70 is with the cross section Q increasing, as the direction finding along light outlet and as shown in for example Figure 10 d.The free end that described groove for example faces described lens towards it becomes wider.

Can further provide the microscler depression 70 of at least two vicinities directly adjoining each other.In this case, described depression/groove is separated by sharp edge or by the conversion portion of rounding (peak of described conversion is positioned on described noncontinuous surface or a part for described noncontinuous surface).Figure 10 e and 10f have shown the groove with the conversion portion at the edge of this point.

Also can provide extraly or alternatively the microscler depression 70 of at least two adjacency to leave each other space.The depression of groove shape is separate with a segment distance, and this distance also can change along described groove.Conventionally, the surface in this situation between (in the case of the noncontinuous surface of plane) described depression is plane, or the condition on rounding limit is provided again.

In the time that cross section Q increases, the distance between two grooves can change with the length of described groove, sees Figure 10 d.

Figure 10 g has shown the border circular areas between groove and groove 70, and Figure 10 h and 10i have shown the groove with smooth conversion portion.

Further provide in an embodiment of the present invention described microscler depression relative to each other to extend abreast.Described depression can also be for example along the direction of described lens and separate.

In a variant of the present invention, can also provide at least part of depression 70 to be provided with the structure of different depth, see Figure 10 f.

Can further provide microscler depression 70 visible with the different degree of depth in its length.

For example, described groove can become darker towards the direction of described lens on edge.The degree of depth of described groove can be than being shallow in described lens side in described reflector side.

Can also further provide different microscler depression with the different degree of depth.

Different grooves not necessarily must be with the same degree of depth, but can have variant in this situation.For example seen ought be the darkest groove be disposed in peak, it is arranged to the described rotating shaft of distance (Figure 10 f) time, is favourable farthest.In addition, the degree of depth of groove can change with its length significantly.

In vertical direction, depression 70 extend through noncontinuous surface 12c in 1/3rd to 2/3rds the region of height that is about as much as noncontinuous surface." highly " of described noncontinuous surface is the vertical range between the highest focal line in the second jacket surface 12b and the first jacket surface 12a.

For fear of produce any undesirable illuminating effect in light distributes, when region and the first jacket surface 12a and/or the second jacket surface (12b) of depression 70 extend through discontinuous plan 12c, preferably with two jacket surfaces (12a, 12b) leave apart from time, this has been proved to be favourable.

Described groove approximately extends up and down with same degree.Not that whole surface is all provided with groove.Preferably, described groove is divided into the surperficial stage casing of three sections described in being approximately placed in.If whole surface is all provided with groove, can make light concentrate in dark district, especially on the shadow region in Figure 10 c.

As mentioned above, part distance light light distribute still can be by the function that light is turned to of described headlamp (lens or whole module described in pivotable) transverse shifting.This has further expanded envelop of function.Even can the height of whole light image further be changed by the level control function of headlamp.

Fig. 8 a and 8b have shown the continuous straight focal line 24 of described diaphragm axle.Fig. 8 c has shown consequent light image 6000, and it is with relevant "cut-off"line 6001.The light of symmetry shown in this article distributes and can be used to visitor's scheme or as city illumination (low speed).

Fig. 9 d finally shown with 9a especially with (dynamically) turn to light relevant according to the further amendment of diaphragm axle 11 of the present invention.Described variant only shows in these accompanying drawings.It can not be presented on Fig. 9 b and 9c.

In order to produce the light dynamically turning to, lens 4 are around the longitudinal axis 300 left and right pivotables, and the described longitudinal axis preferably extends and passes the focus of lens 4 or the focus of reflector 3.

Knownly make the lens that project headlamp around certain longitudinal axis left and right pivotable in order to produce the light dynamically turning to, described lens make light image pivotable equally according to steering angle pivotable.

If diaphragm arrangement is placed in light path, notice especially in the position of diaphragm arrangement that produces dipped beam or section light, due to the pivotable of described lens, conventionally undesirable effect can be created in light image, this effect especially can see in a side of head-on traffic, and the light distribution meeting of greater part is covered.The headlamp of the vehicle for right-hand traffic, especially makes lens left, and while just referring to the direction pivotable towards head-on traffic, during light distributes, this undesirable effect can make head-on traffic dazzle the eyes.

Fig. 9 e has shown the dipped beam light image 1000'("cut-off"line 1001 ' with shaded area 1002 '), this shaded area can be illuminated due to pivotable lens, and this may make head-on traffic dazzle the eyes.

According to the present invention, diaphragm axle 11 comprises jacket surface 12, its be configured to form two or more in the rotational angle range 6 limiting along the circumferential direction, i.e. rotation direction as can be seen, cuts the focal line district of the

focal line

20,21 of light; A focal line of described section of light comprises the first

focal line section

20a, 21a and at least one the second focal line section 20b, the 21b at the "cut-off"line of a side generation light image of this vehicle of at least one "cut-off"line that produces light image in a side of head-on traffic; Comprise at least one lifting parts 80 with described diaphragm axle in the region of at least one the first

focal line section

20a, 21a, it is opposed with described the first focal line section 20a, the 21a of the

focal line

20,21 of the vicinity of section light.

Thereby lifting parts 80 has represented the amendment focal line of the jacket surface of described diaphragm axle and has changed, and obtained the one or more more focal line 20 ' with section 20a', 20b ', 20c' and 20d'.Although focal line section 20b' and 20c ' with

contiguous section

20b, 20c and 21b, 21c substantially similarly mode extend, but region 20a' only partly similar section of 20a or 21a extend, and then region 20a' is modified to the focal line section 20d ' departing from lifting parts 80 regions.

The point of focal line 20d' in the region of lifting parts 80 is more farther apart from rotating shaft 100 than other points of the focal line of this focal line section, and when near the edge R of described diaphragm axle, the distance increase of these points and the rotating shaft of described diaphragm axle.

In the time that being switched to a side that does not comprise any lifting parts 80, described lens (in the situation of the headlamp to right lateral vehicle, do not have lifting parts in the process of pivotable, to have a negative impact at lens left; Lifting parts is attached to right side), the undesirable light that lifting parts 80 can cause pivotable covers, even if so that also obtain meeting the light image of statutory regulations during by pivotable when lens.

In the time that described axle is ported to the position (another dipped beam position of rotating shaft) that described lifting parts enters light path, described shaded area can be cut light and not bright by illumination.

Because this interference occurs over just in the process that light turns to and depends on the pivoting angle of described lens (along with the pivoting angle of lens strengthens, the counter productive of light image also increases), so this section of light dynamically occurs.In the less pivotable of described lens, smaller portions need to be cut light.Therefore, the shaded area of this triangle is extended in more smooth mode, and does not need the lifting parts on described axle to be fully placed in described light path.

Therefore, when lifting parts 80 just as Fig. 9 a and 9d as shown in by certain of the centre apart from diaphragm axle 11 apart from beginning, when edge R rise along longitudinal finding of diaphragm axle 11 towards diaphragm axle 11, this can be favourable.

Because described lifting parts rises towards described edge, strengthen so can compensate with the pivoting angle of described lens the interference increasing light image.

Lifting parts 80 or its focal line 20d ' are no longer clearly incident upon in described light image.Because the focal line of described lens is not straight line but curve, so go to watch away from more from outside from described axle, it is projected fuzzylyyer.Described lifting parts is also like this.

With regard to being with the concrete headlamp of the focal line that is useful on asymmetric dipped beam, the light of a side of traffic is head-on distributed to the first focal line section 20a, the 21a straight line that cut light extends and parallel with the rotating shaft 100 in the

focal line

20,21 of dipped beam, cut that the same straight line of the second focal line section 20b, the 21b of light extends and parallel with rotating shaft 100 in this vehicle one side, the first focal line section 20a is farther than the vertical range of the second focal line section 20b and rotating shaft 100.According to the present invention, lifting parts 80 is to be located at described the first focal line section.Described second segment is established lifting parts.

Headlamp at another for symmetrical dipped beam, cuts the first focal line section of light and has formed continuous straight line in the second focal line section that this vehicle one side is cut light in a side of head-on traffic, and with the shaft parallel of described diaphragm axle.In this headlamp, provide: in described two focal line sections, be provided with at least one lifting parts so that in right lateral and left lateral traffic can its for the lower beam headlamp with can pivotable lens to produce the light dynamically turning to.

The dipped beam of described symmetry is used to city illumination or tourism scheme.Especially for tourism scheme, can all be provided with in both sides lifting parts.While driving, can cover (forbidden) light of disturbing people on left side and right side bend.

In a variant of the present invention, provide described lifting parts to start in the middle of described diaphragm axle, it is separated by such an extent that be equivalent to 5 ° of light image in the distribution of described light (Fig. 9 is e).This is the region that conventionally first obtains undesirable light efficiency in light image described in the process of lens described in pivotable, and this light efficiency can correspondingly be compensated by putting on the lifting parts in this region.Described lifting parts can mainly start from described axle centre (perpendicular to the plane of optical axis crossing with described diaphragm axle and obtain described axle with respect to it along rotating shaft centre extending longitudinally) or can also start from outwards position much far away.

As shown, further providing lifting parts 80 is at the edge of diaphragm axle 11 R or borderline region from the ultimate range of rotating shaft 100.

In the time that vehicle sails bend into, described diaphragm axle is (dynamically) rotation further lentamente, so that described lifting parts further moves into light path at leisure.This can not occur suddenly, but according to the pivoting angle of described lens.When steering locking angle degree (about 15 ° to 20 °), at this moment whole lifting parts can and be at its peak in light path.

Therefore, if before described lifting parts is arranged to its highest point to be incident upon photodistributed edge or soon to arrive photodistributed edge, be suitable.For example, also described lifting parts can be able to be projected at most light distribute in the scope of approximately 45 °.

Except the pivoting angle of described lens, the particulars of angle are specially relevant with the light image being projected.In light image, how the particulars of these angles are shown that described axle itself is to depend on the lens that used.

For example, lifting parts 80 rises linearly to edge R.

Mainly importantly, the jacket surface of described diaphragm axle comprises that at least one " normally " focal line without lifting parts and at least one has the focal line of lifting parts for generation of the light image that is cut light in certain region.Lifting parts only in the situation of lens pivotable (head-on reverse traffic) be necessary,, in the time travelling on bend, started with the focal line of lifting parts.In the time that straight line is driven, do not need lifting parts, and because the photodistributed part of its requirement that described light image must be able to be met stops, so or even disturb people's.

Owing to being difficult to produce with the wall scroll focal line of lifting parts, so based on production reason, lifting parts 80 is now provided, and with spatial expansion along the circumferential direction or expansion part, (Fig. 9 a).Therefore, lifting parts 80 is not arranged to the form of narrow focal line, but along the rotation of described axle or circumferencial direction with expansion or expansion part.

This is not only relevant, also relevant with described light image with production.Conventionally, described spatial expansion part can not realized with stepped lifting parts, but realizes by along the circumferential direction continuing to rise to its peak (ridge).Therefore, in the process of described lens pivotable " swimmingly " described lifting parts is started, this be illustrated in light distribute in without any sudden change.

When lifting parts 80 in the plane intersecting vertically with rotating shaft 100 through it with protrude mode bending time, this is consistent with above-mentioned statement.Even because actuator also can obtain similar result on optics in non-pinpoint situation, be especially favourable in the time that the sweep protruding is equivalent to one section of circular arc.Can easily produce equally circular arc.But described sweep is also oval.

In addition be likely also trapezoidal progressive.Its feasibility can depend on the location accuracy of actuator.

In a variant of the present invention, allow to trigger simply described diaphragm axle, those points of lifting parts 80 are arranged in the highest point of the plane intersecting vertically through lifting parts 80 and rotating shaft 100, form straight line in the projection of the horizontal plane via rotating shaft 100.

This means that it can be positioned on straight line in the time that crossing peak is connected to each other (ridge that it forms described lifting parts) along the extending longitudinally of described axle.This straight line is preferably parallel with the focal line that cuts light, especially preferably with described shaft parallel.

The highest point that can also provide those points of lifting parts 80 to be arranged in the plane intersecting vertically through lifting parts 80 and rotating shaft 100, at the projection forming curves of the horizontal plane via rotating shaft 100.

In specific embodiments of the invention, further provide whole the first focal line section of described lifting parts extend through or in the headlamp of right lateral and left lateral vehicle, extend through whole piece focal line (not shown).

Therefore, in this case, from the centre of described diaphragm axle (as finding longitudinally) to as described in the distance of lifting parts beginning be zero.

In a variant of the present invention, all peaks of described lifting parts are all identical with the distance of the rotating shaft 100 of diaphragm axle 11.Therefore, described lifting parts is arranged to straight line substantially, one or several the straight focal line that cuts light place compare other " normally " of cutting light of being started in the time driving point-blank focal line for height, farther from described rotating shaft.

The accurate shape of lifting parts especially depends on the design of reflector.Stepped lifting parts, or described in the time that the centre from described axle is outwards seen lifting parts originally to rise and then decline be also possible.

Shown headlamp meets the legal provisions of such as ECE (Europe), SAE (U.S., Canada) and JIS (Japan) etc. herein.

Claims

1. the headlamp of vehicle (1), it comprises reflector (3), lens and diaphragm axle (11), this diaphragm axle is placed between reflector (3) and lens, and this diaphragm axle can be conditioned in two or more turned positions round rotating shaft (100), this rotating shaft level and laterally extend to optical axis (200), and this diaphragm axle is with the jacket surface (12) of diaphragm axle (11), this jacket surface in each turned position with at least one focal line (20, 21, 22), this focal line produces light and distributes (1000, 2000, 4000) "cut-off"line (1001, 2001, 4001), this diaphragm axle is cutting between the focal line (21) of light light distribution (2000) and the focal line (22) of distance light light distribution (4000) without any focal line or jacket surface, the photodistributed focal line of distance light (22) is shorter from the vertical range of rotating shaft than the focal line (21) that cuts light from the vertical range of rotating shaft (100),

It is characterized in that

Be provided with protrusion (60) in the central region of diaphragm axle (11), this protrusion is located at the part extending longitudinally along its rotating shaft (100) with respect to diaphragm axle (11), and the contiguous focal line (21) that cuts light, protrusion from cut light focal line (21) away from and extend out, and extend towards circumference or the rotation direction of the imaginary cylindrical sheath (50) of diaphragm axle (11), imaginary cylindrical sheath (50) is less than or equal to the cylindrical sheath surface (51) of diaphragm axle (11) apart from the vertical range of rotating shaft apart from the vertical range of rotating shaft (100), the focal line (21) that cuts light of part is positioned on the cylindrical sheath surface (51) of diaphragm axle (11), the focal line (21) that cuts light of described part is positioned at apart from the nearest position of rotating shaft (100).

2. according to the headlamp of claim 1, it is characterized in that protrusion (60) along the direction of circumference extend and from the focal line (21) that cuts light away from, in this way, protrusion is agley away from the imaginary cylindrical sheath (50) in rotating shaft (100) direction.

3. according to the headlamp of claim 1 or 2, it is characterized in that protrusion (60) edge (62) more opposed than itself and bottom (61) in the bottom (61) of its contiguous focal line (21) that cuts light and that extend in parallel with the focal line (21) of section light is wider.

4. according to the headlamp of claim 3, it is characterized in that the wing (63,64) that bottom (61) is connected to its opposed edge (62) extends with straight line.

5. according to the headlamp of claim 1 or 2, it is characterized in that protrusion (60) is symmetrical with respect to the optical axis (200) of headlamp (1).

6. according to the headlamp of claim 3, it is characterized in that protrusion (60) is symmetrical with respect to the optical axis (200) of headlamp (1).

7. according to the headlamp of claim 4, it is characterized in that protrusion (60) is symmetrical with respect to the optical axis (200) of headlamp (1).