CN208871535U - A kind of headlamp mould group - Google Patents

Abstract

The utility model relates to a kind of headlamp mould groups, including reflector and the lamp source being arranged in reflector, the headlamp mould group further includes the grating modules that the light partially projected upwards can be reflected into downward light, and the grating modules are mounted on reflector and are located on lamp source optical axis.The light partially projected upwards can be reflected into downward light by the grating modules, greatly reduce the light being emitted upwards, while generating the hot spot for having dead line, can effectively avoid generating dazzle to the passerby to come head-on or bicyclist, cause driving dangerous.

Description

A kind of headlamp mould group

Technical field

The utility model relates to lighting technical field, especially a kind of headlamp mould group.

Background technique

Bicycle has extensive audience, and recently as energy-saving and emission-reduction, the consciousness of low-carbon environment-friendly deepens continuously people The heart, bicycle become the walking-replacing tool of more people's daily work lifes again.Since bicycle is not generally equipped with car light, ride Passerby need extra purchase installation bicycle lamp so as to provided when riding at night it is necessary illumination come see front road conditions And road pedestrian is reminded, increase the safety of bicyclist and passerby.

As shown in Figure 1, a kind of common bicycle lamp is directly using the reflector or optics of lens mould group in flashlight. The main spot of such bicycle lamp is the circular light spot of a convergence, cannot effectively be illuminated to road, in addition, this There is a part of acclivitous light for the bicycle lamp of sample, it is easy to generate to the passerby to come head-on or bicyclist dizzy Light causes driving dangerous.

As shown in Fig. 2, a kind of common bicycle lamp is the top that illuminator is placed in reflective glass component, illuminator Optical axis is vertically downward.Such optical module can make the hot spot with dead line, effectively prevent dazzling generation, still Illuminator is placed on the surface of reflective glass component, is unfavorable for structure sometimes and carries out radiating treatment to luminous component.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of headlamp mould group, solve existing headlamp mould Group is easy to generate dazzle to the people to come head-on there is a part of acclivitous light, causes driving dangerous.

The technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of headlamp mould group, including anti- Light cup and the lamp source being arranged in reflector, the headlamp mould group further include the light partially projected upwards can be reflected into The grating modules of lower light, the grating modules are mounted on reflector and are located on lamp source optical axis.

Further, the grating modules include N number of spaced Turbogrid plates, and the upper surface of the Turbogrid plates is coated with Light absorbent, the lower surface of the Turbogrid plates are reflecting surface, wherein N >=2.

Further, the light absorbent is black light-absorbing material, and the lower surface of the Turbogrid plates is diffusing reflection face.

Further, one end of the Turbogrid plates is concordant with the light output end of the reflector.

Further, it is parallel to each other between N number of Turbogrid plates, and parallel with the lamp source optical axis.

Further, N number of Turbogrid plates are from top to bottom sequentially arranged on reflector, the spacing of two neighboring Turbogrid plates For d, d=(R-H)/N, wherein R is the inside radius of reflector light output end, and H is near the Turbogrid plates of lamp source optical axis to optical axis Distance, N be Turbogrid plates the piece number.

Further, the length of N number of Turbogrid plates from top to bottom successively increases.

Further, the grating modules include three Turbogrid plates, respectively the first Turbogrid plates, the second Turbogrid plates and the Three Turbogrid plates, first Turbogrid plates, the second Turbogrid plates and third Turbogrid plates are from top to bottom sequentially arranged on reflector；Institute The length along optical axis for stating the first Turbogrid plates is L1=d/tanA, and wherein d is the spacing of two neighboring Turbogrid plates, and A is straight line M1 With the angle of lamp source optical axis, straight line M1 is the line at lamp source light-emitting surface edge and reflector open edge.

Further, second Turbogrid plates are L2=d/tanB along the length of optical axis, and B is straight line M2 and lamp source optical axis Angle, straight line M2 are the line at lamp source light-emitting surface edge and the first Turbogrid plates end lower edge；

Further, for the third Turbogrid plates near lamp source optical axis, length L3=d/tanC, C along optical axis are straight The angle of line M3 and lamp source optical axis, straight line M3 are the line at lamp source light-emitting surface edge and the second Turbogrid plates end lower edge.

Further, the curved surface of the reflector is hyperboloid, paraboloid or free form surface.

Further, the reflector includes upper reflective surface, lower reflective surface, left side and right side, the left side Side and right side are parallel to each other, and the grating modules are mounted on left side and right side.

Compared with the existing technology, a kind of headlamp mould group provided by the utility model, grating modules are mounted on reflector It goes up and is located on lamp source optical axis, which can be reflected into downward light for the light partially projected upwards, greatly reduce The light being emitted upwards, while the hot spot for having dead line is generated, it can effectively avoid producing the passerby to come head-on or bicyclist Raw dazzle causes driving dangerous.

Detailed description of the invention

Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:

Fig. 1 is the light path schematic diagram for the bicycle lamp that the prior art provides；

Fig. 2 is the light path schematic diagram for the bicycle lamp that the prior art provides；

Fig. 3 is the structural schematic diagram of headlamp mould group provided by the utility model；

Fig. 4 is the light path schematic diagram of headlamp mould group in Fig. 3；

Fig. 5 is the spacing schematic diagram of Turbogrid plates in Fig. 4；

Fig. 6 is the length schematic diagram of Turbogrid plates in Fig. 5；

Fig. 7 is the structural schematic diagram of another embodiment headlamp mould group provided by the utility model.

Specific embodiment

Now in conjunction with attached drawing, elaborate to the preferred embodiment of the utility model.

As shown in Figures 3 and 4, the utility model provides a kind of headlamp mould group, including reflector 10 and setting in reflector Lamp source 20 in 10.Headlamp mould group further includes the grating modules that the light partially projected upwards can be reflected into downward light 30, grating modules 30 are mounted on reflector 10 and are located on 20 optical axis X of lamp source.The grating modules 30 can partially will be penetrated upwards Light out is reflected into downward light, greatly reduces the light being emitted upwards, while generating the hot spot for having dead line, can be effective It avoids generating dazzle to the passerby to come head-on or bicyclist, causes driving dangerous.

Further, grating modules 30 include N number of spaced Turbogrid plates (wherein N >=2), and the upper surface of Turbogrid plates applies It is covered with light absorbent, in this way the light absorption of upper surface can be prevented from being reflected into the light being emitted upwards, generate glare effects. The lower surface of Turbogrid plates is reflecting surface, the light partially projected upwards can be reflected into downward light.Specifically, when N number of grid Be parallel to each other between plate, and it is parallel with 20 optical axis X of lamp source when, light is reflected into downward light by the lower surface of Turbogrid plates.Work as N It is parallel to each other between a Turbogrid plates, when not parallel with 20 optical axis X of lamp source, set angle keeps the lower surface of Turbogrid plates that light is anti- Penetrate into horizontal light.

In the present embodiment, light absorbent is black light-absorbing material, and light absorptive is more preferable.The lower surface of Turbogrid plates is diffusing reflection Face, diffusing reflection is emitted downwards after light is irradiated to Turbogrid plates lower surface, the uniform hot spot formed under cut-off light.Lamp source 20 preferred LED light.

As shown in figure 5, N number of Turbogrid plates are from top to bottom sequentially arranged on reflector 10, the spacing of two neighboring Turbogrid plates For d, d=(R-H)/N, wherein R is the inside radius of 10 light output end of reflector, and H arrives for the Turbogrid plates near 20 optical axis X of lamp source The distance of optical axis X, N are the piece number of Turbogrid plates.

In the present embodiment, the length of N number of Turbogrid plates from top to bottom successively increases, one end and the reflector 10 of Turbogrid plates Light output end is concordant, and grating modules 30 include three Turbogrid plates, respectively the first Turbogrid plates 31, the second Turbogrid plates 32 and third Turbogrid plates 33, the first Turbogrid plates, the second Turbogrid plates and third Turbogrid plates are from top to bottom sequentially arranged on reflector 10.

Firstly, the spacing d between the first Turbogrid plates 31, the second Turbogrid plates 32 and third Turbogrid plates 33 is determined, according to shape At the needs of hot spot, the distance H for arriving optical axis X near the third Turbogrid plates 33 of 20 optical axis X of lamp source is set, then determines Turbogrid plates The piece number N=3, it is known that the inside radius R of 10 light output end of reflector can thus calculate spacing d=(R-H)/N.After confirming d It just can determine the installation site of the first Turbogrid plates 31, the second Turbogrid plates 32 and third Turbogrid plates 33.

Secondly, determining the length of the first Turbogrid plates 31, the second Turbogrid plates 32 and third Turbogrid plates 33.First Turbogrid plates 31, the length of the second Turbogrid plates 32 and third Turbogrid plates 33 from top to bottom successively increases, and is light upward in order to prevent in this way Line is projected between two Turbogrid plates, generates dazzle.As shown in fig. 6, the length along optical axis X of the first Turbogrid plates is L1=d/ TanA, wherein d is the spacing of two neighboring Turbogrid plates, and A is the angle of straight line M1 and 20 optical axis X of lamp source, and straight line M1 is lamp source 20 The line at light-emitting surface edge and 10 open edge of reflector.If the optics at 20 light-emitting surface edge of lamp source all cannot be from reflector 10 Opening projects, then will be reflected down by the first Turbogrid plates 31 to glazed thread close to 20 center of lamp source.Second grid Plate is L2=d/tanB along the length of optical axis X, and B is the angle of straight line M2 and 20 optical axis X of lamp source, and straight line M2 is 20 light-emitting surface of lamp source The line at edge and the first Turbogrid plates end lower edge；The third Turbogrid plates are near 20 optical axis X of lamp source, along optical axis X's Length L3=d/tanC, C are the angle of straight line M3 and 20 optical axis X of lamp source, and straight line M3 is 20 light-emitting surface edge of lamp source and second gate The line of panel end lower edge.The length of the above Turbogrid plates is that just can prevent upward light from penetrating between two Turbogrid plates Out, therefore their length can be greater than corresponding length critical value.During calculating, the thickness of Turbogrid plates can be ignored Degree.

Finally, the curved surface of reflector 10 can be hyperboloid, paraboloid or free song to obtain better hot spot effect Face, light the blocking due to Turbogrid plates that lamp source 20 issues, hot spot will form the clearly demarcated dead line of light and shade, anti-by adjusting Light, 10 curve are overlapped the central light strength come out by reflector 10 with dead line as far as possible to be formed more obvious Dead line hot spot is suitable for bicycle lighting use.In addition, 10 global shape of reflector in bowl-shape, can be formed with dead line Similar round hot spot, the center overlapping of axles of lamp source optical axis X and reflector 10.

As shown in fig. 7, reflector 10 can not also be in bowl-shape, reflector 10 includes upper reflective surface 11, lower reflective surface 12, left side 13 and right side 14, left side 13 and right side 14 are parallel to each other, and grating modules 30 are mounted on 13 He of left side On right side 14, this shape can form the hot spot that left and right is narrow, and front and back is grown, and convenient for concentrating brightness, conveniently illuminate the road in front, It is particularly suitable in relatively narrow street or lane.In addition, upper reflective surface 11, lower reflective surface 12 can be according to adjusting hot spots Needs be arranged to the curved surface being made of four curved surfaces.

It should be understood that above embodiments are only to illustrate the technical solution of the utility model, it is rather than its limitations, right For those skilled in the art, it can modify to technical solution illustrated in the above embodiments, or to part of skill Art feature is equivalently replaced；And all such modifications and replacement, it all should belong to the protection of the appended claims for the utility model Range.

Claims (10)

1. a kind of headlamp mould group, including reflector and the lamp source being arranged in reflector, which is characterized in that the headlamp mould Group further includes the grating modules that the light partially projected upwards can be reflected into downward light, and the grating modules are mounted on reflective On cup and it is located on lamp source optical axis.

2. headlamp mould group according to claim 1, which is characterized in that the grating modules include N number of spaced Turbogrid plates, the upper surface of the Turbogrid plates are coated with light absorbent, and the lower surface of the Turbogrid plates is reflecting surface, wherein N >=2.

3. headlamp mould group according to claim 2, which is characterized in that the light absorbent is black light-absorbing material, institute The lower surface for stating Turbogrid plates is diffusing reflection face.

4. headlamp mould group according to claim 2, which is characterized in that one end of the Turbogrid plates and the reflector Light output end is concordant.

5. headlamp mould group according to claim 2, which is characterized in that it is parallel to each other between N number of Turbogrid plates, and with The lamp source optical axis is parallel.

6. according to the headlamp mould group of any one of claim 2 to 5, which is characterized in that N number of Turbogrid plates by It is sequentially arranged on reflector under, the spacing of two neighboring Turbogrid plates is d, d=(R-H)/N, and wherein R is that reflector goes out light The inside radius of end face, H are the Turbogrid plates near lamp source optical axis to the distance of optical axis, and N is the piece number of Turbogrid plates.

7. headlamp mould group according to claim 6, which is characterized in that the length of N number of Turbogrid plates from top to bottom according to Secondary increase.

8. headlamp mould group according to claim 6, which is characterized in that the grating modules include three Turbogrid plates, point Not Wei the first Turbogrid plates, the second Turbogrid plates and third Turbogrid plates, first Turbogrid plates, the second Turbogrid plates and third grid Plate is from top to bottom sequentially arranged on reflector；The length along optical axis of first Turbogrid plates is L1=d/tanA, and wherein d is The spacing of two neighboring Turbogrid plates, A are the angle of straight line M1 and lamp source optical axis, and straight line M1 is lamp source light-emitting surface edge and reflector The line of open edge.

9. headlamp mould group according to claim 8, which is characterized in that second Turbogrid plates are L2 along the length of optical axis =d/tanB, B are the angle of straight line M2 and lamp source optical axis, and straight line M2 is that lamp source light-emitting surface edge and the first Turbogrid plates end are following The line of edge.

10. headlamp mould group according to claim 9, which is characterized in that the third Turbogrid plates near lamp source optical axis, , along the length L3=d/tanC of optical axis, C is the angle of straight line M3 and lamp source optical axis for it, and straight line M3 is lamp source light-emitting surface edge and the The line of two Turbogrid plates end lower edges.