CN102278685B

CN102278685B - Headlamp for vehicles

Info

Publication number: CN102278685B
Application number: CN201110107856.5A
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: 2014-07-16
Anticipated expiration: 2031-04-22
Also published as: EP2381164A3; EP2381164A2; EP2381164B1; AT509830B1; CN102278685A; AT509830A1

Abstract

The invention relates to a vehicular headlamp (1), which comprises a reflector (3), a lens (4) and a diaphragm shaft (11). The diaphragm shaft (11) which is located between the reflector (3) and the lens (4) can be adjusted on two or more rotary positions on a rotation axis (100) horizontally extending towards an optical axis (200). The diaphragm shaft (11) comprises a cover surface (12) which has at least one focal line (20, 20',21, 22, 23, 24) on each rotary position so as to generate lighting degree cutting lines (1001, 2001,3001, 4001, 5001, 6001, 7001, 1001') of light distributions (1000, 2000, 3000,4000, 5000, 6000, 7000, 1000'). The cover surface of the diaphragm shaft comprises grooves (30-35) at a region of the at least one focal line for dimmed light. The grooves run parallel to the rotation axis (100) of the diaphragm shaft (11). The adjacent grooves (30, 31; 31, 32; 32, 33; 33, 34; 34, 35) are directly limited together in a rotation direction and/or a circumferential direction. The adjacent grooves are separated from each other by common point edges (40-44).

Description

Vehicle head lamp

Technical field

The present invention relates to vehicle head lamp, comprise reflector, lens and diaphragm axle, described diaphragm axle is placed between described reflector and described lens and can laterally extending the rotating shaft to optical axis around level, and adjustable in two or more turned position, the jacket surface of described diaphragm axle in each turned position with at least one focal line to produce photodistributed "cut-off"line, the jacket surface of described diaphragm axle comprises groove in this has the region of focal line of at least one section of light, and the rotating shaft of described groove and described diaphragm axle is extended substantially abreast.

Background technology

The diaphragm axle that is used for producing the vehicle head lamp of different light images is known.Because the expansion of this diaphragm axle is also extended along the direction of light outlet, so compare with the planar diaphragm (diaphragm that thickness is little and thin) of insignificant expansion with the direction along light outlet, 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 be dispersed to therefrom outside become undesirable scattered beam, under some environment this can cause legally unallowed dazzle the eyes or light image in shading value.It is in little film bobbin, because it also has certain expansion in the direction of light outlet that this problem is also present in diameter.

This problem especially appears in the photodistributed situation of cutting light.The photodistributed example that " cuts light " is the dipped beam of dipped beam, highway light, symmetry.These light are distributed in the regulation of ECE/SAE for example and are defined.

The problem of undesirable scattered beam has been discussed in U.S. Patent number 2009/0154187 A1, and it has shown the diaphragm axle of mentioning while starting.The diaphragm axle showing in this article comprises groove, its by apart certain segment distance be distributed at least one whole half (along the described rotating shaft finding) of diaphragm axle described in the part of jacket surface of described diaphragm axle extend through.

Yet, even if noticed and use this diaphragm axle, can not remedy satisfactorily the problem of the disperse light in the light that cuts light distributes.

Summary of the invention

The object of this invention is to provide the diaphragm axle that has solved the above-mentioned problem about light scattering, with activation, obtain and conform with the legal light value that cuts light and the light that there is no or almost do not have undesirable dispersion.

The vehicle head lamp of mentioning while use starting is in the following manner reached this object: according to the present invention, the groove of adjacency, as along as described in rotation or the circumferencial direction finding of diaphragm axle, be directly adjacent to each other and be separated from each other by common limit.

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." desirable " light of described diaphragm axle arrives described diaphragm axle with the less gradient, it is absorbed by described diaphragm or can arrive outside via described focal line, so that projects in light image cutting light (line (cut-off line) of terminator (cut-off limit), light and shade cut-off) according to effective focal line on optics in the current location of 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 can not accurately be placed to by described diaphragm axle the part that two edges between rib are always described focal lines.On the contrary, described diaphragm axle also can be placed in two centre positions (not having edge to be cast out by clear in optics optimum position) between edge.This causes fuzzy a little, "cut-off"line no longer completely clearly, anyway it more can vision protection, so 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.

Only, with highly accurate and relatively costly actuator, just, likely accurately by described diaphragm axle location, this there is no need completely, and only can allow headlamp unnecessarily more expensive.

According to the present invention, the direct adjacency of contiguous groove is also separated from each other by edge.Between groove and groove in fact or almost without any jacket surface, can produce the ray of undesirable dispersion.

According to the above, if Shi Jian edge, described edge is especially favourable.

Should between contiguous groove, produce as far as possible sharp edge, with transition (conversion) region at slightly pointed edge, to produce as far as possible the most paucidisperse ray.In practice, the edge that produces this point obviously has some restriction.Depend on material, can obtain more or less by the edge of rounding, thereby provide by the transitional region of rounding between described groove.In this case, it is little should keeping radius separately as far as possible.

In specific embodiments of the invention, described diaphragm axle comprises jacket surface, and it is provided in the rotational angle range of restriction along the circumferential direction, and finding as in rotational direction forms the focal line district of many focal lines that cut light; And a plurality of grooves, it is disposed in the scope of this rotational angle of described jacket surface.

In theory, under the condition of always accurately locating at the actuator of described diaphragm axle, (point) focal line is just enough.Because this is unpractical, should be slightly larger than the positioning precision of described actuator so place described rotational angle range of cutting the focal line of light.

Because likely produce other mistakes (except the inaccuracy of location), so in order to ensure the reliability of process, it is favourable that the rotational angle range with larger configuration is provided.When using stepping motor, it may lose step can be forevermore with for example error of 1 ° in operation, until location (for example carry out in starting the process of vehicle location) next time.Yet because focal line of the same type is placed in the scope of enough large rotational angle, losing step so this is no problem.

The minimum diameter of described axle is mainly limited by the height of the "cut-off"line under distance light.With regard to the concrete headlamp with certain lens, for producing the distance light for example exceed on H-H 6 °, need diameter to be at least the diaphragm axle of 12mm.Be necessary to increase the needed space of rotating shaft.When the diameter of the described shaft axis of supposition (rotating shaft) is 5mm, the diameter of described diaphragm axle reaches about 17mm.

Required focal line is distributed on described diaphragm axle " sheath " surface.When having the focal line of six types, each type is all provided with for example 60 ° of segmental arcs (in equally distributed situation) of described jacket surface.If focal line is only used a little angular range, on the sheath of described diaphragm axle, just have a large amount of dead sectors, this is disadvantageous.In practice, dissimilar focal line only needs to be separated into following degree: it is not negative effect produce for example fuzzy "cut-off"line mutually each other.The focal line that cuts light is for example, to be less than for example 60 ° (take 20 ° as segmental arc) close to each other, and described part distance light has 90 ° or larger segmental arc.

When those grooves relative to each other extend in parallel, can accomplish simple production and about the simple condition of optical computing.

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

Further provide those grooves be disposed in as along as described in rotating shaft being seen as described in the region of diaphragm axle in the middle of substantially.

Described reflector " concentrates " 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, not absolute demand, at the mid portion of described diaphragm axle with peripheral hardware groove, and has been completely enough in these regions by described axle blackening conventionally.

With regard to the specific implementation of headlamp, the focal line that cuts light comprises:

*) straight line extend and with the first focal line section of shaft parallel, and

*) same straight line extend and with the second focal line section of shaft parallel,

Described two focal line sections via with respect to axes of rotation skew the straight burnt segment link that extends,

And described the first focal line section is more farther from the vertical range of rotating shaft than described the second focal line section from the vertical range of rotating shaft.

From with respect to axes of rotation skew the focal line section of extending, described groove extends a segment distance and enters the described first and/or second focal line section in this headlamp, is preferably and all enters two focal line sections.

The distance that puts in focal line section is roughly equivalent to the angular range of 10 ° of +/-(measuring from the central point of light source).This numerical value depends primarily on reflector.If the maximum of reflector is little, in the middle of described light concentrates on consumingly, extending 10 ° is also enough certainly certainly.If the maximum area of reflector is very large, may stretches in both sides and surpass 30 ° (for example 45 °).

If described groove also passes completely through the focal line section that (penetrate) tilts, and is preferred for subtracting paucidisperse ray.

If described groove at least forms with section, along its (with shaft parallel) extending longitudinally, be provided with at least one section, and this is to form by two opposed regions, described region is extended toward each other with certain angle and is preferably arranged at least partly plane, favourable especially for the optical property of gained.Thereby can be preferably 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 be each other intersect in the mode of acute angle, and region is toward 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.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 transition portion of point is optically preferred, but this is unimportant in function.From the angle of producing, with by the groove of the transitional region of rounding be (more easily the removing) that is produced preferably from mould.

If the angle that the plane in the place ahead of the direction of groove in light outlet stretches with respect to jacket surface than the back plane of this groove is larger, for production, be further favourable.Especially back plane is being to being relevant aspect production, and from the angle of optics, frontal plane should should become the maximum gradient as much as possible with respect to described jacket surface, destroys as far as possible the light of maximum dispersions by this mode.

This relate on described jacket surface shown in angle between plane and tangent line surface, the intersecting lens that plane and described jacket surface shown in described tangent line surface is included in obtain while intersecting.

Angle between two planes of groove itself is for example approximately 45 ° in the focal line region of highway lamp, for example, in the focal line region of dipped beam, be approximately 90 °.

In the region of the jacket surface of described diaphragm axle, be placed with the focal line that cuts light with the form of highway light, in this region, the edge of separated described two grooves is with vertical range extension identical between the first focal line section with described dipped beam and described rotating shaft and be parallel to described rotating shaft.

In the region of the jacket surface of described diaphragm axle, be placed with the focal line that cuts light with the form of dipped beam, in this region the edge of separated two grooves at least the vertical range in some section and between described rotating shaft than the vertical range between the first focal line section of described dipped beam and described rotating shaft, be farther.

In the specific embodiment of described diaphragm axle, two regions of the jacket surface of above-mentioned diaphragm axle are arranged in rotational direction, so that it can become highway light from dipped beam by rotating described diaphragm axle.

If originally described edge is parallel to rotating shaft with the identical vertical range of the first focal line section with cutting light, extending, is then farther marginal portion via marginal portion protuberance to the vertical range with rotating shaft tilting, and is preferred.Sliver is limited by statutory regulations.

Further advantageously provide a plurality of edges and all have from the identical vertical range of rotating shaft, and a plurality of edge is provided with than the first focal line section of cutting light from the vertical range away from rotating shaft, with activation, in the region of cutting light, avoid the light of undesirable dispersion.Described diaphragm axle does not need to locate especially accurately.Angle between two edges is about as much as the positioning precision of actuator used.

Can also select larger angle.In specific embodiment, it is approximately 5 °, and selects in such a way: when 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.

Accompanying drawing explanation

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 when 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 of the projection system generation of using Fig. 1 distributes,

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

Fig. 4 b has shown the front view of described diaphragm axle when 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 when 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 when " 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 mistake of high beam time in distributing;

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 when sending the position of distance light;

Fig. 6 b has shown the front view of described diaphragm axle when 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 when the position of part distance light;

Fig. 7 b has shown the front view of described diaphragm axle when 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 when sending symmetrical dipped beam position;

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

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

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

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

Fig. 9 c has shown that described diaphragm axle is along the sectional view of 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 modification of establishing;

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

The specific embodiment

Fig. 1 has shown according to the vehicle head lamp with diaphragm axle 11 of the present invention (projection system) 1.Headlamp 1 comprises the lens 4 (seeing Fig. 5 d) that are attached in lens carrier (not shown) for example.Thereby described lens carrier can be around the longitudinal axis 300 pivotables around the longitudinal axis 300 pivotable lens 4.Some make and revise shown herein also relevant with the projection system of lens with can not pivotable to diaphragm axle 11 according to the present invention.If revise 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, at reflector described in illustrated variant, is installed in adapter 2.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 the second focus that its focal line extends and pass 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 second portion 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 comprised 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 it be take with many focal lines 20 light that cuts light (cut-off) that generation form is dipped beam and distributes, and with many focal lines 21, take the light that cuts light that generation form is highway light and distribute.Further shown 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 that the corresponding dipped beam light with "cut-off"line 1001 distributes 1000.

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, highway light for example.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 that is used for producing the vehicle head lamp of different light images is known.Because the expansion of this diaphragm axle is also extended along the direction of light outlet, so have the planar diaphragm (diaphragm that thickness is little and thin) of inappreciable expansion to compare with the direction along light outlet, 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 ECE/SAE for example and are defined.

The problem of the light of undesirable dispersion has been discussed, its diaphragm axle as described in having shown when started in U.S. Patent number 2009/0154187 A1.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 and it extends across described diaphragm axle at least one complete half (visible along described rotating shaft).Yet, 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 and cut the legal light value of light 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 to (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-off line) of terminator (cut-off limit), 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, so this does not have any problem, on the other hand or even favourable.

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 the layout that can form the focal line district of many focal lines 20,21 that cut light, and a plurality of 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 described rotational angle range of cutting the focal line of 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.When 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 when 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 of many adjacency of same type (for example many focal lines of dipped beam etc.), 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.When having the focal line of six types, each type is all provided with the arc section of 60 ° of described jacket surface for example (in equally distributed situation; Also may there be other to distribute).If focal line is only used 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 is used 60 ° of maximum, to obtain reliability in operation.

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

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.When 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 without any jacket surface, can produce the ray of undesirable dispersion.

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, during sharp edge, be favourable.Should between contiguous groove, produce as far as possible sharp edge, with transition (conversion) region at slightly pointed edge, 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.

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

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

Groove 30,31,32,33,34,35 is preferably disposed in the region 12m of diaphragm axle 11 in the middle of substantially, as along rotating shaft 100 findings (seeing Fig. 8 b).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, at the mid portion of described diaphragm axle, with peripheral hardware groove, be not imperative, and these regions on described axle are done to black conventionally completely enough.

When 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 and 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 in both sides, extend beyond 30 °, 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, along its part extending longitudinally (with shaft parallel), be provided with at least one section, 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 be crossing 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.With the groove of the transitional region of rounding, can change places and produce (more easily from mould, removing).

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, for production, be further favourable.Especially, back plane ε 1 is relevant for producing, 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 that plane and described jacket surface shown in described tangent line surface is included in obtain while intersecting.

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

Go back again with reference to Fig. 4 a and 4b, can further recognize in the region of jacket surface of 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 with described dipped beam to the same vertical of rotating shaft 100 apart from extending and being parallel to rotating shaft 100.

Yet, 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 originally edge 40,41,42 is parallel to rotating shaft 100 with the first focal line section 20a with cutting light from the identical vertical range of the vertical range of rotating shaft 100, extending, is then farther marginal portion (Fig. 9 c) via marginal portion protuberance to the vertical range with rotating shaft 100 tilting.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 a plurality of edges 40,41,42 than the first focal line section 20a, the 21a that cut light from the vertical range of rotating shaft 100, with activation, in the region of cutting light, avoid the light of undesirable dispersion.Described diaphragm axle does not need to locate especially accurately.Article two, the angle between edge (seeing Fig. 9 b) is about as much as the positioning precision of actuator used, in its actuator using in reality, is approximately 2 °.

Can also select larger angle.In specific embodiment, it is approximately 5 °, and selects by this way: when 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.

Diaphragm axle 11 based in distribute according to the generation dipped beam light of the position of Fig. 3 a and 3b (Fig. 3 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 surpass 90 °, conventionally even over 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, for example the focal line of the focal line of dipped beam or highway light, is followed rear by the focal line of distance light or focal line region.By making described diaphragm axle be converted to distance light light around its rotating shaft, distribute.There is no with the effective focal line of optics cutting between the region of light and distance light region.Yet, in order also to reduce the weight of described diaphragm axle, can greatly reduce in practice the materials of described diaphragm axle.

When 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 can clearly not projected yet again.Finally, described diaphragm axle is reversed to producing the photodistributed position of distance light, thereby wherein focal line 22 is optically effective (Fig. 6 a, Fig. 6 b).Because the focal line 22 of distance light is placed more much lower than the focal line that cuts light, thus focus that can be in described lens or described reflector, so described focal line can be clearly incident upon in light image yet, yet Here it is desired effect.

Due to the configuration cutting 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, in the centre of light image, obtain bright luminous point, described luminous point has disturbed light image and has been considered to be unwelcome.

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

In order to ensure luminous point 3002, do not appear in light image or greatly reduce its brightness, 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 the focal line 11 that cuts light away from and extend out, and towards circumferencial direction or the rotation direction of the diaphragm axle 11 along imaginary cylindrical sheath 50, extend 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 from the nearest distance of rotating shaft 100.

Fig. 3 a, 3b, 4a, 4b and Fig. 5 a and 5b have clearly illustrated described protrusion.Fig. 5 a and 5 has 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 and from described reflector, via the zone line of described diaphragm axle, penetrate and produce those light of described luminous point.

Diaphragm axle 11 also covers the shown light S1 of 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 via described axle, penetrate.

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

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

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 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 of the described undesirable luminous point of light image when cutting light and become distance light progressive harmoniously.

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

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 large or slightly larger than it with described luminous point.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 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 when protrusion 60 will be suitable during with respect to optical axis 200 symmetry of headlamp 1.

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

When further rotation diaphragm axle 11, described system moves to the position of the generating portion distance light light distribution 5000 of described diaphragm axle from distance light light distribution (Fig. 6 a to 6c), with the "cut-off"line with Reference numeral 5001 (Fig. 7 c), cut progressively light.Fig. 7 a and 7b have shown the progress that produces this part photodistributed focal line 23 far away.The turned position of depending on 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 bending columniform mode for example, 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 plane for example substantially, and the second sheath region 12b is nearer apart from rotating shaft 100 than crooked 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, in the distribution of part distance light light, being converted to distance light region is to remain unaffected, and, when described diaphragm axle is reversed, at light described in this region, distributes constant.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 EP 2 157 362 A1, comprise other objects and be known for generation of the diaphragm axle of one or more focal line of part distance light, but in this case with crooked noncontinuous surface.The in the situation that of part distance light, in the photodistributed region of vehicle or people present " normally " distance light, can be blocked/cover.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 into dipped beam in other cases, 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 ".

In order to obtain this light, distribute, 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 2 157 362 A1, 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 situation that the planar patch of plane, this discontinuity in the focal line of described light image is unchallenged.Yet, 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 during 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.Yet 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 that the distance light light with the part of this effect distributes 7000.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.Yet 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, when 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 in best mode is wanted the region being illuminated in the space beyond described headlamp.

As shown in Figure 10 a and 10b, when described one or more depressions 70 are arranged to point to the microscler continuous depression 70 of direction of 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 from it, penetrate through described depression and in depression 70 end 78, and arrive the space (Figure 10 b) beyond described headlamp.

Have been noted that in specific embodiments of the invention, when at least one depression 70 approximately extends 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 crooked 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 be extraly or provide 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 situation that noncontinuous surface of plane) described depression is plane, or the condition on rounding limit is provided again.

When 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 in the direction along towards described lens.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 farthest when (Figure 10 f), is favourable.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 that is about as much as the height of 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, region and the first jacket surface 12a and/or the second jacket surface (12b) as 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 (lens or whole module described in pivotable) of described headlamp transverse shifting.This has further expanded envelop of function.Even can control function by the level of headlamp further changes the height of whole light image.

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

If diaphragm arrangement is placed in light path, noticed especially in the position of diaphragm arrangement that produces dipped beam or section light, pivotable due to 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.Headlamp for the vehicle of 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 ', and 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 δ 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 that at least one side in head-on traffic produces 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 the "cut-off"line of light image; In the region of at least one the first focal line section 20a, 21a, comprise at least one lifting parts 80 with described diaphragm axle, 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 modification 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 section 20b, the 20c with contiguous 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.

When being switched to a side that does not comprise any lifting parts 80, described lens (in the situation of the headlamp of 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.

When 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, during 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, so the pivoting angle increasing that can compensate with described lens increases the interference to 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 the concrete headlamp of focal line that is useful on asymmetric dipped beam with regard to band, 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, in this vehicle one side, cut that the same straight line of the second focal line section 20b, the 21b of light extends and parallel with rotating shaft 100, 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 ° (Fig. 9 e) of the light image in described light distribution.This is in light image described in the process of lens described in pivotable, conventionally first to obtain the region of undesirable light efficiency, and this light efficiency can correspondingly be compensated by putting on the lifting parts in this region.Described lifting parts can mainly start from the centre (obtain perpendicular to the plane of optical axis and described diaphragm axle intersect described axle with respect to it along rotating shaft centre extending longitudinally) of described axle 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.

When 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, when travelling on bend, with the focal line of lifting parts, started.When 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 the wall scroll focal line with 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 when the sweep protruding is equivalent to one section of circular arc.Can easily produce circular arc equally.Yet 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, at the projection formation straight line of the horizontal plane via rotating shaft 100.

This means that it can be positioned on straight line when 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 when 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 when 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 such as ECE (Europe), SAE (U.S., Canada) and JIS (Japan) etc. herein.

Claims

1. vehicle head lamp (1), comprise reflector (3), lens (4) and diaphragm axle (11), diaphragm axle (11) is placed between reflector (3) and lens (4) and can laterally extending the rotating shaft (100) to optical axis (200) around level, and adjustable in two or more turned position, the jacket surface (12) of diaphragm axle (11) in each turned position with at least one focal line (20, 20 ', 21, 22, 23, 24) to produce light, distribute (1000, 2000, 3000, 4000, 5000, 6000, 7000, 1000 ') "cut-off"line (1001, 2001, 3001, 4001, 5001, 6001, 7001, 1001 '), the jacket surface (12) of diaphragm axle (11) has the focal line (20 of at least one section of light at this, 21) in region, comprise groove (30, 31, 32, 33, 34, 35), the rotating shaft (100) of described groove and diaphragm axle (11) is extended substantially abreast,

It is characterized in that

The groove of adjacency (30,31; 31,32; 32,33; 33,34; 34,35) along the rotation of diaphragm axle (11) or circumferencial direction is directly adjacent to each other and separate by common edge (40,41,42,43,44).

2. headlamp according to claim 1, is characterized in that edge (40,41,42,43,44) is sharp edge.

3. headlamp according to claim 1 and 2, it is characterized in that diaphragm axle (11) comprises jacket surface (12), it is provided in the rotational angle range (δ) of restriction along the circumferential direction, as in rotational direction finding, forms the focal line district of many focal lines (20,20 ', 21) that cut light; And described groove is a plurality of grooves, the plurality of groove is disposed in this rotational angle range (δ) of described jacket surface (12).

4. according to the headlamp described in claim 1 claim, it is characterized in that groove (30,31,32,33,34,35) relative to each other extends in parallel.

5. according to the headlamp described in claim 1 claim, it is characterized in that groove (30,31,32,33,34,35) be disposed in as along as described in the region (12m) of the being seen diaphragm axle of rotating shaft (11) in the middle of substantially.

6. according to the headlamp described in claim 1 claim, it is characterized in that the focal line that cuts light comprises:

*) straight line extend and with the first focal line section (20a, 21a) of the dipped beam of shaft parallel, and

*) same straight line extend and with the second focal line section (20b, 21b) of shaft parallel,

These two focal line sections (20a, 20b; 21a, 21b) via connecting obliquely and with linearly extended three warmers line segment (20c, 21c) with respect to rotating shaft (100),

And the first focal line section (20a) of described dipped beam from the vertical range of rotating shaft (100) than described the second focal line section (20b) from the vertical range of rotating shaft (100) away from.

7. headlamp according to claim 6, it is characterized in that the focal line section (20c, 21c) from extending obliquely with respect to rotating shaft (100), groove (30,31,32,33,34,35) extends a segment distance (d) and enters the first and/or second focal line section (20a, 21a; 20b, 21b).

8. headlamp according to claim 7, is characterized in that putting in focal line section (20a, 21a; 20b, 21b) distance (d) be roughly equivalent to measure from the central point of light source the angular range of 10 ° of +/-.

9. according to the headlamp described in claim 7 or 8, it is characterized in that groove (30,31,32,33,34,35) penetrates the focal line section (20c of inclination completely; 21c).

10. according to the headlamp described in claim 1 claim, it is characterized in that groove (30,31,32,33,34,35) at least forms with section, and this is to form by two opposed regions, extend toward each other with certain angle (γ) in described region.

11. headlamps according to claim 10, is characterized in that described region is arranged to plane (ε 1, ε 2) at least partly.

12. headlamps according to claim 10, is characterized in that the angle that the plane (ε 2) in groove (30,31,32,33,34,35) the place ahead in light outlet direction stretches with respect to jacket surface (12) than the back plane of this groove (ε 1) is larger.

13. headlamps according to claim 6, the edge that it is characterized in that separated two grooves is with vertical range extension identical between the first focal line section (21a) with described dipped beam and rotating shaft (100) and be parallel to rotating shaft (100).

14. headlamps according to claim 6, the edge that it is characterized in that separated two grooves at least vertical range in some section and between rotating shaft (100) is farther than the vertical range between the first focal line section (20a) of described dipped beam and rotating shaft (100).

15. headlamps according to claim 14, it is characterized in that edge (40,41,42) is originally parallel to rotating shaft (100) with the identical vertical range of the first focal line section (20a) with cutting light and extends, the vertical range being then raised up to rotating shaft (100) via the edge section tilting is farther edge section.

16. according to claim 13 to the headlamp described in a claim wherein in 15, it is characterized in that a plurality of edges (43,44) all have from the identical vertical range of rotating shaft (100), and a plurality of edge (40,41,42) are provided with than the first focal line section (20a, 21a) of cutting light apart from rotating shaft (100) vertical range far away.