CN104976567A - High-efficiency LED double-chip high beam and low beam integrated automobile headlamp optical system - Google Patents

Abstract

The invention relates to a high-efficiency LED double-chip high beam and low beam integrated automobile headlamp optical system. The system comprises LED light sources, reflection cups and a lens. The LED light sources comprise the upper LED light source and the lower LED light source. The reflection cups are the upper reflection cup matched with the upper LED light source and the lower reflection cup matched with the lower LED light source. The lens comprises a planar incident face and an outer convex face allowing light to be emitted. The side, close to the incident face, of the lens is provided with a positioning protruding ring protruding on the outer side of the outer convex face. The rotation axis of the outer convex face and the rotation axis of the positioning protruding ring coincide with each other. The thickness of the outer convex face of the lens is set to be B. The front section part with the thickness being B/3 and from the top of the outer convex face to one side of the positioning protruding ring is an ellipsoid face, and the rear section part with the thickness being 2B/3 is a paraboloid. The joint between the ellipsoid-face-shaped front section part and the paraboloid-shaped rear section part is in smooth transition. The system is good in illumination effect, high in illumination degree and clear in vision; besides, the light shape of emitted light is good, and brightness and luminous efficacy are higher.

Description

High-efficiency LED dual-chip far and near light integrated automotive headlight optical system

technical field

The invention belongs to the technical field of automobile lighting, and in particular relates to a high-efficiency LED double-chip far and near light integrated automobile headlight optical system.

Background technique

In the prior art, the headlights of automobiles generally use reflectors to focus light, and the light after being concentrated by the reflector cups is used to focus again with a lens when it exits, so that the light in front of the car reaches a certain illuminance value, thereby providing The driver provides lighting. However, there are the following defects in the prior art: after the light is collected by the reflective cup, there is a defect of uneven light. In the prior art, bumps are usually added to the inner surface of the reflective cup to improve the light output effect, but this structure will lead to bright light. Spots, poor lighting effect.

Therefore, how to obtain a car headlight with a good lighting effect is a technical problem that needs to be solved urgently in the field of car lighting technology.

Contents of the invention

The object of the present invention is to overcome above-mentioned deficiencies in the prior art, provide a kind of high-efficiency LED double-chip far and near light integrated automobile headlight optical system, this headlight not only has good illumination effect, high illuminance, clear field of vision, and The light pattern of the outgoing light is good, and the brightness and light efficiency are also higher.

To achieve the above object, the present invention adopts the following technical solutions:

A high-efficiency LED dual-chip far and near light integrated automotive headlight optical system, including an LED light source, a reflector cup, and a lens. The LED light source includes an upper LED light source arranged on the upper table of the positioning platform and an Lower LED light source on the table;

The reflective cup is divided into an upper reflective cup matched with the upper LED light source and a lower reflective cup matched with the lower LED light source;

The lens is a plano-convex lens, including a planar incident surface and an outer convex surface for light output; the lens is provided with a positioning convex ring protruding outside the outer convex surface on a side close to the incident surface, and the outer convex surface is in contact with the outer convex surface. The axis of rotation of the positioning convex ring coincides with each other; a transparent mirror body is between the incident surface and the convex surface for light emission; the thickness of the convex surface of the lens is set to be B, from the top of the convex surface to the side of the positioning convex ring The front section with a thickness of B/3 is an ellipsoid, and the rear section with a thickness of 2B/3 is a paraboloid; the connection between the ellipsoid-shaped front section and the paraboloid-shaped rear section is smoothly transitioned.

Preferably, the upper reflective cup includes an upper reflective cup body, the interior of the upper reflective cup body is the reflective surface of the upper reflective cup, from the mouth of the upper reflective cup to the side away from the mouth of the upper reflective cup, the The reflective surface of the upper reflective cup is composed of the first reflective cup reflective surface, the second reflective cup reflective surface, and the third reflective cup reflective surface connected in sequence. The first reflective cup reflective surface, the second reflective cup reflective surface , The reflective surface of the third upper reflective cup is a curved surface fitted by a quadratic Bezier curve, between the reflective surface of the first upper reflective cup and the reflective surface of the second upper reflective cup, and between the reflective surface of the second upper reflective cup and the second reflective cup The joints between the reflective surfaces of the three upper reflective cups are all smooth transitions, and the radius of curvature of the first upper reflective cup reflective surface, the second upper reflective cup reflective surface, and the third upper reflective cup reflective surface decreases in turn.

Further, the upper reflective cup body is provided with a vertically arranged upper reflective cup reinforcement plate on the side of the cup mouth, and the bottom of the upper reflective cup body is provided with an outwardly protruding, horizontally arranged upper reflective cup positioning plate. plate; the plane obtained by the intersection of the central axis of the upper reflective cup reinforcing plate and the central axis of the upper reflective cup positioning plate is the upper reflective cup projection surface, and the projection length of the upper reflective cup positioning plate on the upper reflective cup projection surface is greater than that of the upper reflector cup positioning plate. The projection length of the reflector reinforcement plate on the projection surface of the upper reflector.

Furthermore, the projection length of the upper reflector positioning plate on the projection surface of the upper reflective cup is set to be L1, and the upper reflective cup positioning plate with a length of 2L1/5 near the cup mouth is the front part of the upper reflective cup positioning plate, away from The upper reflector positioning plate with a length of L1/5 on the side of the cup mouth is the rear part of the upper reflective cup positioning plate, and the upper reflective cup positioning plate with a middle length of 2L1/5 is the middle part of the upper reflective cup positioning plate; The reflective surface of the first upper reflective cup is connected to the front part of the upper reflective cup positioning plate correspondingly, the second reflective cup reflective surface is connected to the middle part of the upper reflective cup positioning plate correspondingly, and the third upper reflective cup reflective surface is connected to the rear of the upper reflective cup positioning plate The segment part corresponds to the connection.

Preferably, the lower reflective cup includes a lower reflective cup body, the interior of the lower reflective cup body is the reflective surface of the lower reflective cup, from the mouth of the lower reflective cup to the side away from the mouth of the lower reflective cup, the The reflective surface of the lower reflective cup is composed of the first reflective cup reflective surface, the second reflective cup reflective surface, and the third reflective cup reflective surface connected in sequence. The first reflective cup reflective surface, the second reflective cup reflective surface , The reflective surface of the third lower reflective cup is a curved surface fitted by a quadratic Bezier curve, between the reflective surface of the first lower reflective cup and the second reflective cup The joints between the reflective surfaces of the three lower reflective cups are all smooth transitions, and the radius of curvature of the first lower reflective cup reflective surface, the second lower reflective cup reflective surface, and the third lower reflective cup reflective surface decreases in turn.

Further, the lower reflective cup body is provided with a vertically arranged lower reflective cup reinforcing plate on the side of the cup mouth, and the bottom of the lower reflective cup body is provided with an outwardly protruding, horizontally arranged lower reflective cup positioning plate. plate; the plane obtained by the intersection of the central axis of the lower reflective cup reinforcing plate and the central axis of the lower reflective cup positioning plate is the lower reflective cup projection surface, and the projection length of the lower reflective cup positioning plate on the lower reflective cup projection surface is greater than that of the lower reflector The projection length of the cup reinforcement plate on the projection surface of the lower reflector cup.

Furthermore, the projection length of the plate surface of the lower reflector positioning plate on the projection surface of the lower reflector cup is L, and the lower reflector positioning plate close to the cup mouth and with a length of L2/6 is the front part of the lower reflector positioning plate , the lower reflective cup positioning plate with a length of L2/6 away from the cup mouth is the rear part of the lower reflective cup positioning plate, and the lower reflective cup positioning plate with a middle length of 2L2/3 is the middle part of the lower reflective cup positioning plate; The reflective surface of the first lower reflective cup is correspondingly connected with the front part of the positioning plate of the lower reflective cup; The rear part of the board corresponds to the connection.

Preferably, the projection length L1 of the upper reflective cup positioning plate on the upper reflective cup projection surface, that is, the lower reflective cup projection surface, is greater than the projection length L2 of the lower reflective cup positioning plate on the upper reflective cup projection surface, that is, the lower reflective cup projection surface .

Further, the system also includes a light blocking mechanism arranged in front of the light emission of the upper reflector cup and the lower reflector cup, the light blocking mechanism includes a positioning plate fixedly connected with the radiator, and a light blocking plate and a driving mechanism are arranged on the positioning plate ; The driving mechanism drives the light barrier to act so that the headlights of the automobile emit a low beam light type or a high beam light type.

Preferably, the light-blocking plate includes a rotating shaft hole which is convenient for itself to form a hinged fit with the positioning plate; the light-blocking plate is respectively provided with a light-blocking arm and a toggle arm for forming a cut-off line on the side of the rotating shaft hole;

The light-shielding arm is plate-shaped, and the surface of the plate-shaped light-shielding arm is perpendicular to the direction of light emission. The upper edge of the light-shielding arm is provided with a first straight edge on the side close to the rotation shaft hole, and on the side far away from the rotation shaft hole. The side is provided with a second straight side, the first straight side and the second straight side are not parallel and are connected together by an upwardly protruding arc edge, and the highest point of the arc edge protrudes from the first straight edge the upper side of

The toggling arm is provided with a toggling hole, the output end of the driving mechanism, that is, the end of the toggling shaft extends into the toggling hole, and the toggling shaft of the driving mechanism drives the light blocking arm of the light blocking plate through the toggling hole Rotate up and down around the rotating shaft hole, so that the headlights of the automobile emit a low beam light type or a high beam light type.

The beneficial effects of the present invention are:

1), the present invention adopts a double reflective cup structure, that is, the reflective cups in the present invention are divided into an upper reflective cup and a lower reflective cup, and the reflective surfaces of the upper reflective cup and the lower reflective cup in the present invention are both secondary Bessel The curved surface formed by fitting the Erle curve, the reflective surface formed by this curved surface will make the light pattern of the outgoing light better, and the brightness and light efficiency will be higher. The light output effect of the headlights and the resulting light pattern meet the requirements of regulations, and ensure driving safety, and also improve the driving comfort of passengers in the car.

2), the upper reflective cup and the lower reflective cup in the present invention all adopt the mode of the combination of three sections of reflective surfaces, and the three sections of reflective surfaces are all curved surfaces fitted by quadratic Bezier curves. This multi-curved surface fitting The unique design structure not only makes the light emitted by the lamp bead, that is, the LED light source, be collected and utilized to the maximum extent, but also the light emitted by the double light source is effectively superimposed, which greatly improves the brightness and light efficiency of the outgoing light. Compared with the light efficiency of 64% achieved by the common design, the light efficiency of the present invention is as high as 82.9%, thus the present invention greatly improves the energy efficiency.

3), the outer convex surface of the lens in the present invention adopts a plurality of aspherical designs, that is, the front section of the outer convex surface, that is, the exit end, is an ellipsoid, and its main function is to disperse the outgoing light rays, and the rear section of the outer convex surface, that is, the incident end is The main function of a paraboloid is to converge the incident rays. The design of the lens in the present invention not only realizes the re-reasonable distribution of the incident light, but also further improves the illumination effect and illuminance of the outgoing light, thereby better satisfying the driving experience of the occupants.

4), the upper edge of the light-shielding arm in the present invention is composed of the first straight edge, the arc edge and the second straight edge which are successively connected. The upper edge of this structure can control the light type more precisely, so that the first straight edge The cooperation of the side, the arc side and the second straight side can not only make the outgoing light conform to the set light pattern, but also the light pattern and brightness of the outgoing light meet or exceed the requirements of the national standard.

Description of drawings

Figure 1 is a schematic diagram of explosion decomposition of the headlight module where the optical system is located.

Figures 2 and 3 are structural schematic diagrams of the headlight module.

FIG. 4 is a schematic cross-sectional structure diagram of FIG. 3 .

5 and 6 are structural schematic diagrams of lenses.

Figures 7 and 8 are schematic structural views of the sleeve in the headlight module.

9 and 10 are structural schematic diagrams of the radiator in the headlight module.

Fig. 11 is a schematic diagram of a three-dimensional state of the upper reflector.

Fig. 12 is a schematic structural view of the upper reflective cup.

Fig. 13 is a schematic cross-sectional view of the upper reflective cup.

Fig. 14 is a schematic perspective view of the three-dimensional state of the lower reflective cup.

Fig. 15 is a schematic structural view of the lower reflective cup.

FIG. 16 is a bottom view of FIG. 15 .

Figures 17a and 17b are both structural schematic diagrams of the light blocking mechanism when the headlight emits low beam light.

Figures 18a and 18b are both structural schematic diagrams of the light blocking mechanism when the headlight emits high beam light.

Fig. 19 is a schematic structural view of the light blocking plate.

Fig. 20 is a diagram of the light emitting ray path in the present invention.

Fig. 21 is a light pattern diagram of the low beam emitted by the headlight module.

Fig. 22 is a diagram of the high beam light pattern emitted by the headlight module.

The meanings of the marked symbols in the figure are as follows:

10—upper reflective cup 11—upper reflective cup body 111—upper reflective cup reflective surface

12—Reinforcing plate of upper reflector 13—Positioning plate of upper reflector 131—Positioning hole of upper reflector

20—lower reflective cup 21—lower reflective cup body 211—lower reflective cup reflective surface

22—Reinforcing plate of the lower reflector 23—Positioning plate of the lower reflector 231—Positioning hole of the lower reflector

30—radiator 31—positioning platform 31a—upper table 31b—lower table

32a—upper reflector positioning platform 32b—lower reflector positioning platform 33—docking plate

331—Sleeve positioning column 332—Sleeve mounting hole 333—Module positioning hole

334—Light blocking mechanism positioning hole 335—Light blocking mechanism positioning column 34—Heat dissipation channel

35—radiating fin 351—fan mounting hole

40—lens 41—outer convex surface 42—incidence surface 43—positioning convex ring

50—sleeve 51—limit flange 52—fixed seat 53—claw

54—limiting block 55—hollowout part 56—process installation hole 57—gap

60—light blocking mechanism 61—positioning plate 611—block 62—driving mechanism

621—toggle shaft 63—light blocking plate 631—rotating shaft hole 632—light blocking arm

6321—first straight side 6322—curved side 6323—second straight side

6324—limit slot 633—toggle arm 6331—toggle hole

70a—upper fixed shrapnel 70b—lower fixed shrapnel

80a—upper LED light source 80b—lower LED light source

90—power adapter board

100—fan

Detailed ways

For ease of understanding, the specific structure of each component in the automobile headlight module will be further described below in conjunction with the accompanying drawings.

1. Lens

As shown in Figures 5 and 6, the lens 40 is a plano-convex lens, including a planar incident surface 42 and an outer convex surface 41 for light output; The positioning convex ring 43, the outer convex surface 41 and the rotation axis of the positioning convex ring 43 coincide with each other; the transparent mirror body is between the incident surface and the outer convex surface for light emission.

The lens 40 is made of high borosilicate optical grade glass.

As shown in Figure 6, the thickness of the outer convex surface 41 of the lens 40 is B, and the thickness of the front part from the top of the outer convex surface 41 to the positioning convex ring 43 side is B/3, which is an ellipsoid, and the thickness is 2B/3. The rear portion is a paraboloid; the junction between the ellipsoid-shaped front portion and the paraboloid-shaped rear portion is smoothly transitioned.

From the incident surface 42 , the light first enters the paraboloid-shaped rear section, which gathers the light entering it, and then enters the ellipsoid-shaped front section, which disperses the light and then emits it. The lens in the present invention redistributes the incident light reasonably and then emits it, so that the emitted light not only meets the national standard, but also better satisfies the driving experience of the passengers in the car.

2. Sleeve

As shown in Figures 7 and 8, the sleeve 50 is hollow. The sleeve 50 includes an annular cylinder and a fixing seat 52 arranged on the rear side of the cylinder. The cylinder and the fixing seat 52 are integrated. The front end is provided with a ring-shaped limit flange 51 bent toward the inside of the cylinder, and the front wall of the cylinder close to the limit flange is provided with a claw part that cooperates with the limit flange. The bottom of the cylinder is provided with a notch 57 extending from the rear end of the cylinder to the front end of the cylinder.

As shown in FIGS. 2 to 4 , the notch 57 is provided at the lower end of the sleeve 50 , which is beneficial to dissipate heat in time.

As shown in Figures 7 and 8, the claw portion includes three claws 53 uniformly arranged on the front wall of the cylinder along the circumferential direction, and the rear ends of the claws 53 are connected to the front wall of the cylinder. As a whole, the front end of the claw 53 cantilever forward along the axial direction of the cylinder, that is, there is a hollow part 55 between the front end of the claw 53 and the wall of the cylinder, and the claw 53 is gradually elastic from the rear end to the front end. Offset to the inside of the cylinder. The front end of any claw 53 is provided with a limit block 54 that protrudes toward the inner side of the cylinder, and the limit block 54 is set as a slope toward the side of the fixing seat 52 , and the space between the limit block 54 and the limit flange 51 constitute a restricted area.

As shown in FIG. 7 , a process installation hole 56 and a fastening screw hole are provided on the end surface of the fixing base 52 .

3. Upper reflector

As shown in Figures 11 to 13, the upper reflective cup 10 includes an upper reflective cup body 11, the upper reflective cup body 11 is provided with an upper reflective cup reinforcing plate 12 on the cup mouth side, and the bottom of the upper reflective cup body 11 is provided with The outwardly protruding upper reflective cup positioning plate 13 is provided with an upper reflective cup positioning hole 131; the plate surface of the upper reflective cup positioning plate 13 is horizontal, and the upper reflective cup reinforcing plate 12 The surface is a vertical plane perpendicular to the plate surface of the upper reflector positioning plate 13; the plane obtained by the intersection of the central axis of the upper reflective cup reinforcing plate 12 and the central axis of the upper reflective cup positioning plate 13 is the upper reflective cup projection surface, The projection length of the upper reflective cup positioning plate 13 on the upper reflective cup projection surface (that is, the direction parallel to the paper surface or the paper surface direction in FIG. 12 ) is longer than the upper reflective cup reinforcement plate 12 on the upper reflective cup projection surface. projection length on .

As shown in Figures 12 and 13, the inside of the upper reflective cup body 11 is the upper reflective cup reflective surface 111, and the projection length of the upper reflective cup positioning plate 13 on the upper reflective cup projection surface is L1, which is close to the cup mouth and The upper reflective cup positioning plate with a length of 2L1/5 is the front part of the upper reflective cup positioning plate, and the upper reflective cup positioning plate with a length of L1/5 away from the cup mouth is the rear part of the upper reflective cup positioning plate, and the middle length is The upper reflector positioning plate of 2L1/5 is the middle part of the upper reflector positioning plate. The reflective surface 111 of the upper reflective cup is composed of the first reflective cup reflective surface, the second reflective cup reflective surface, and the third reflective cup reflective surface connected in sequence. The front portion of the cup positioning plate is correspondingly connected, the second upper reflective cup reflective surface is correspondingly connected with the middle portion of the upper reflective cup positioning plate, and the third upper reflective cup reflective surface is correspondingly connected with the rear portion of the upper reflective cup positioning plate. The first upper reflective cup reflective surface, the second upper reflective cup reflective surface, and the third upper reflective cup reflective surface are curved surfaces fitted by quadratic Bezier curves. The first upper reflective cup reflective surface and the second upper reflective cup reflective surface The junctions between the reflective surfaces of the cups and between the reflective surfaces of the second upper reflective cup and the reflective surface of the third upper reflective cup are all smooth transitions, and the first reflective cup reflective surface, the second upper reflective cup reflective surface, and the third upper reflective cup reflective surface The radius of curvature of the reflective surface of the upper reflector decreases successively.

As shown in FIG. 11 , the upper reflective cup positioning plate 13 is arranged in two pieces, and the two reflective cup positioning plates 13 are symmetrically arranged on both sides of the upper reflective cup body 11 along the central axis of the upper reflective cup body 11 .

Since the upper reflective cup reflective surface 111 of the upper reflective cup 10 is a curved surface fitted by a quadratic Bezier curve, the upper reflective cup reflective surface 111 enables the light emitted by the lower lamp bead, that is, the LED light source, to be collected and utilized to the maximum extent. , greatly improving the light efficiency (common design is only 64%, but the design in the present invention makes the light effect reach 82.9%), that is to say, the reflective surface 111 of the upper reflector cup in the present invention not only obtains a better light pattern, but also has a higher brightness Higher, on the premise of meeting the standards, it ensures the safety of driving.

4. Lower reflector

As shown in Figures 14 to 16, the lower reflective cup 20 includes a lower reflective cup body 21, the lower reflective cup body 21 is provided with a lower reflective cup reinforcing plate 22 on the cup mouth side, and the bottom of the lower reflective cup body 22 is provided with The outwardly protruding lower reflective cup positioning plate 23 is provided with a lower reflective cup positioning hole 232; the plate surface of the lower reflective cup positioning plate 23 is horizontal, and the lower reflective cup reinforcing plate 22 The surface is a vertical plane perpendicular to the plate surface of the lower reflective cup positioning plate 23; the plane obtained by the intersection of the central axis of the lower reflective cup reinforcing plate 22 and the central axis of the lower reflective cup positioning plate 23 is the lower reflective cup projection surface, The projection length of the lower reflective cup positioning plate 23 on the lower reflective cup projection surface (in FIG. projection length;

It should be pointed out that the lower reflector positioning plate 23 of the lower reflector 20 is located on the upper side when it is in the working position, as shown in FIGS. 1 , 3 and 4 . The lower reflective cup 20 shown in FIGS. 14-16 is for better explaining its structure, and is not shown according to the working position.

As shown in FIG. 4 , the inside of the lower reflective cup body 22 is the lower reflective cup reflective surface 222 .

As shown in Figure 16, the projection length of the lower reflective cup positioning plate 23 on the lower reflective cup projection surface is L2, and the lower reflective cup positioning plate with a length of L2/6 near the cup opening is the front part of the lower reflective cup positioning plate. The lower reflective cup positioning plate with a length of L2/6 on the side away from the cup mouth is the rear part of the lower reflective cup positioning plate, and the lower reflective cup positioning plate with a middle length of 2L2/3 is the middle part of the lower reflective cup positioning plate. The reflective surface 222 of the lower reflective cup is composed of the reflective surface of the first reflective cup, the reflective surface of the second reflective cup, and the reflective surface of the third reflective cup. The front portion of the cup positioning plate is correspondingly connected, the second lower reflective cup reflective surface is correspondingly connected with the middle portion of the lower reflective cup positioning plate, and the third lower reflective cup reflective surface is correspondingly connected with the rear portion of the lower reflective cup positioning plate. The first lower reflective cup reflective surface, the second lower reflective cup reflective surface, and the third lower reflective cup reflective surface are curved surfaces fitted by quadratic Bezier curves. The first lower reflective cup reflective surface and the second lower reflective cup The junctions between the reflecting surfaces of the cups and between the reflecting surface of the second lower reflecting cup and the reflecting surface of the third lower reflecting cup are all smooth transitions, and the reflecting surface of the first lower reflecting cup, the reflecting surface of the second lower reflecting cup, the third The radius of curvature of the reflective surface of the lower reflector decreases successively.

As shown in FIG. 22 , the lower reflective cup positioning plate 23 is arranged in two pieces, and the two reflective cup positioning plates 23 are symmetrically arranged on both sides of the lower reflective cup body 22 along the central axis of the lower reflective cup body 22 .

Since the reflective surface 222 of the reflective cup 20 is a curved surface fitted by a quadratic Bezier curve, the reflective surface 222 of the reflective cup makes the light emitted by the lower lamp bead, that is, the LED light source, be collected and utilized to the greatest extent. , greatly improving the light efficiency (common design is only 64%, and the design in the present invention makes the light effect reach 82.9%), that is to say, the reflective surface 222 of the lower reflective cup in the present invention not only obtains a better light pattern, but also has a higher brightness Higher, on the premise of meeting the standards, it ensures the safety of driving.

As shown in Figures 3 and 4, the projection length L1 of the upper reflector positioning plate 13 on the projection surface of the upper reflector, that is, the projection surface of the lower reflector (in Figure 16 is parallel to the direction of the paper or is the direction of the paper) It is larger than the projected length L2 of the lower reflective cup positioning plate 23 on the upper reflective cup projection plane, that is, the lower reflective cup projection plane.

5. Radiator

The heat sink 30 in the present invention is integrally formed by aluminum alloy die-casting, which minimizes thermal resistance and improves heat dissipation efficiency.

As shown in Figures 9 and 10, the radiator 30 is provided with a positioning platform 31 for arranging the LED light source, and the LED light source includes an upper LED light source 80a arranged on the upper table surface 31a of the positioning platform and an upper LED light source 80a arranged on the lower table surface 31b of the positioning platform. The lower LED light source 80b, the upper LED light source 80a is fixed by the upper fixing elastic piece 70a, and the lower LED light source 80b is fixed by the lower fixing elastic piece 70b.

The upper and lower sides of the positioning platform 31 are respectively provided with an upper reflector positioning platform 32a for fixing the upper reflector 10 and a lower reflector positioning platform 32b for fixing the lower reflector 20, and the upper reflector positioning platform 32a and the lower reflector The table tops of the cup positioning platform 32b protrude from the outside of the table top of the positioning platform 31 . Both the upper reflective cup positioning platform 32a and the lower reflective cup positioning platform 32b are arranged in a semi-circular shape, and the opening side of the semi-circular ring is set as the outgoing direction of the light.

The heat sink 30 is provided with a plurality of parallel, fin-shaped cooling fins 35 on the outer sides of the upper reflector positioning platform 32a and the lower reflecting cup positioning platform 32b, and gaps are provided between adjacent cooling fins 35 . The extending direction of the fin-shaped heat sink 35 is perpendicular to the table surface of the positioning platform 31 .

The height of the fins of the heat sink 35 decreases gradually from the middle of the positioning platform 31 to both sides of the positioning platform 31, as shown in Figures 9 and 10, the size of the heat sink 35 in the middle of the positioning platform 31 is relatively large, while it is in the middle of the positioning platform 31. The size of the cooling fins 35 on both sides of the positioning platform 31 is relatively small, and this structural form is conducive to improving the efficiency of radiation heat dissipation and convection heat dissipation.

As shown in Figures 3 and 4, the size between the upper and lower ends of the heat sink 35 in the middle of the positioning platform 31 matches the distance between the top of the upper reflective cup 10 and the bottom of the lower reflective cup 20, that is, it is on the positioning platform. The size between the upper and lower ends of the heat sink 35 in the middle of the 31 should at least equal the distance between the top of the upper reflective cup 10 and the bottom of the lower reflective cup 20, so as to achieve the best cooling effect.

As shown in Figures 1, 2, and 9, several groups of cooling fins 35 in the middle of the positioning platform 31 are provided with fan mounting holes 351 on the side away from the positioning platform 31, and the fan 100 is installed and fixed on the radiator 30 through the fan mounting holes 351 during work. The back.

As shown in Figures 9 and 10, the positioning platform 31 is provided with a cooling channel 34, and the cooling channel 34 runs through the entire positioning platform 31 along the outgoing direction of the light, that is, the cooling channel 34 is located on both sides of the positioning platform 31 along the outgoing direction of the light. Each end is provided with an opening; the opening of the heat dissipation channel 34 on the side close to the radiator 30 is set to face the fan 100 .

As shown in FIG. 10 , the positioning platform 31 is provided with a void on its front side along the light emitting direction, and the opening of the heat dissipation channel 34 on the front side of the positioning platform 31 is opened at the void. The setting of the vacancy helps to form convective heat transfer and improves the heat dissipation effect.

As shown in Figures 1 to 4, the air discharge direction of the fan 100 in the present invention coincides with and is opposite to the light emitting direction. Under the action of suction, the air flows from the side of the lens 40 to the side of the fan 100. During the course of the air, the air entrains the hot air dissipated from the gap between the sleeve 50 and the radiator 30 in turn, and the air flows through the upper reflective cup 10 and the cup surface of the lower reflector 20 are finally discharged through the gap between adjacent heat sinks; at the same time, the fan 100 also sucks out the hot air inside the headlight module through the heat dissipation channel 34 to be discharged. Therefore, the fan in the present invention greatly enhances the convection performance of the air through its ingenious air exhaust path design, and realizes excellent convection and heat dissipation capabilities.

As shown in Figures 9 and 10, the front side of the positioning platform 31, that is, the side where the light is emitted, is provided with a butt plate 33, and the butt plate 33 is a U shape formed by two upright plates and a horizontal horizontal plate; 33 is respectively provided with module positioning holes 333 at the upper and lower ends of its upright plate, and a sleeve positioning column 331 and a sleeve mounting hole 332 are arranged between the two module positioning holes 333 of the same upright plate; A light blocking mechanism positioning hole 334 is respectively arranged on its two upright plates, and two light blocking mechanism positioning posts 335 are arranged on its horizontal horizontal plate.

The two light-shielding mechanism positioning holes 334 and the two light-shielding mechanism positioning posts 335 cooperate with each other to ensure the stability of the light-shielding mechanism 60 installation, thereby helping the light-shielding plate 63 in the light-shielding mechanism 60 to play its light-shielding function reliably. Function.

As shown in Figures 1 and 2, the positioning platform 31 is also provided with a power adapter plate 90 on the lower side of the fan 100, and the front end of the power adapter plate 90 passes through the lower side of the cooling fin 35 and is fixed on the positioning platform 31. on the lower table top 31b.

6. Light blocking mechanism

As shown in Figures 1 and 17a to 18b, the present invention also includes a light blocking mechanism 60 arranged in front of the light emission of the upper reflective cup 10 and the lower reflective cup 20, and the light blocking mechanism 60 includes a docking plate 33 with the radiator 30 The positioning plate 61 fixedly connected, the positioning plate 61 is provided with a light blocking plate 63 and a driving mechanism 62 for driving the light blocking plate 63 to move; and the cup mouth of the lower reflector cup 20 so that the headlight emits the low beam light type or deviates from the cup mouth of the upper reflector cup 10 and the lower reflector cup 20 so that the headlight emits two position states of the high beam light type.

As shown in Figure 19, the light blocking plate 63 includes a rotating shaft hole 631 that facilitates its own hinged fit with the positioning plate 61; the light blocking plate 63 is respectively provided with a light blocking arm 632 and a toggle arm on the side of the rotating shaft hole 631. 633. The light blocking arm 632 is used to form a cut-off line.

The light blocking arm 632 is plate-shaped, and the plate surface of the plate-shaped light blocking arm 632 is perpendicular to the light emitting direction. The upper edge of the light blocking arm 632 is provided with a first straight edge 6321 on the side close to the rotation shaft hole 631. A second straight side 6323 is provided on the side away from the rotation shaft hole 631, the first straight side 6321 and the second straight side 6323 are not parallel and connected together by an upwardly protruding arc edge 6322, the arc The highest point of the side 6322 protrudes above the first straight side 6321 and the second straight side 6323 .

As shown in Figures 17a and 17b, when the first straight side 6321 is in a horizontal state, the horizontal plane where the first straight side 6321 is located is higher than the higher endpoint of the second straight side 6323, that is, where the first straight side 6321 is located. The water level is higher than the highest point of the second straight side 6323.

The driving mechanism 62 drives the toggle arm 633 to move, and when the light blocking arm 632 rotates up and down around the rotating shaft hole 631, the first straight side 6321, the arc-shaped side 6322 and the second straight side 6323 all protrude from the positioning plate 61 The upper side of the board edge enables the headlights to emit low beam light (as shown in Fig. 18a, 18b), or the first straight side 6321, the arc side 6322 and the second straight side 6323 are all blocked by the upper board edge of the positioning board 61 And make the headlight emit high beam light type (as Fig. 17a, 17b) two kinds of position states.

Specifically, as shown in Figures 17a and 17b, the first straight side 6321 of the light blocking arm 632 is horizontal at this time, and the second straight side 6323 is blocked by the positioning plate 61. At this time, the first straight side 6321, positioning The upper plate edge of the plate 61 and the cup openings of the two reflector cups jointly form an area for light emission, and the headlight module emits a high-beam light pattern. Please refer to Figure 22 for the high beam light pattern.

As shown in Figures 18a and 18b, at this time, the second straight side 6323 of the light blocking arm 632 is horizontal, and at this time, the first straight side 6321, the arc-shaped side 6322, the second straight side 6323 and the two reflective cups The mouth of the cup jointly encloses and synthesizes an area for light emission, and the headlight of the car emits a low beam light pattern. Please refer to Figure 21 for the low beam light pattern.

The first straight side 6321 , the arc-shaped side 6322 and the second straight side 6323 cooperate with each other to form the light blocking arm 632 with a curved upper edge, which can control the light pattern more precisely and make the outgoing light conform to the set light pattern.

The toggle arm 633 is provided with a toggle hole 6331, the output end of the driving mechanism 62, that is, the end of the toggle shaft 621 extends into the toggle hole 6331, and the toggle shaft 621 of the drive mechanism 62 passes through the toggle hole 6331 drives the light-shielding arm 632 of the light-shielding plate 63 to rotate up and down around the rotating shaft hole 631, so that the headlight module emits a low-beam light type or a high-beam light type.

As shown in Figures 17a-19, a limiting groove 6324 is provided on the side of the second straight side 6323 away from the rotation shaft hole 631, and the upper plate edge of the positioning plate 61 is provided with a limiting groove 6324 at a corresponding position. Cooperating limit stopper 611.

It can be seen from Figure 21 and Figure 22 that the light pattern irradiated by this headlight module is not only uniform and beautiful, but also the displayed data and shape are ideal, which is significantly different from the irradiation data and shape of existing headlights. Advantage. Specifically, the light pattern emitted by the headlight module, regardless of width, thickness, uniformity or visible illuminance, meets or even exceeds the national standard requirements, and the cut-off line of light and dark is clear, and the driving experience is safe and reliable.

There are many ways to realize the driving mechanism, for example, the way of electromagnetic attraction can be adopted, and the driving method of this electromagnetic attraction can refer to the prior art.

The structure and working process of the headlight module will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the high-efficiency LED dual-chip far and near light integrated automotive headlight module includes an upper reflector 10, a lower reflector 20, a radiator 30, a lens 40, a sleeve 50, a light blocking mechanism 60, an upper The fixed elastic piece 70a, the lower fixed elastic piece 70b, the upper LED light source 80a, the lower LED light source 80b, the power adapter board 90 and the fan 100.

And the optical system among the present invention then comprises upper LED light source 80a, lower LED light source 80b, upper reflective cup 10, lower reflective cup 20, lens 40 and light-blocking mechanism 60 wherein, the function of described light-blocking mechanism 60 realizes on the one hand Control the light pattern more precisely, and on the other hand, it is used to switch the far and low light patterns to meet the light pattern requirements of the headlight module.

During work, first press the upper LED light source 80a on the upper table surface 31a of the radiator positioning platform 31 with the upper fixed elastic piece 70a (stainless steel tension elastic piece can be used), and set the lower LED light source 80b on the heat dissipation surface by the lower fixed elastic piece 70b. On the lower table surface 31b of the radiator positioning platform 31, the bottoms of the upper LED light source 80a and the lower LED light source 80b are tightly attached to the positioning platform 31 of the radiator 30, thereby ensuring that the upper LED light source 80a and the lower LED light source are on the one hand. The position of the light source 80b will not move, and on the other hand, it is also beneficial to improve the heat dissipation efficiency.

Then the upper reflector 10 and the lower reflector 20 are placed on the radiator 30 respectively, that is, the screws are sequentially passed through the upper reflector positioning hole 131 on the upper reflector positioning plate 13 and the upper table 31a of the radiator positioning platform 31 corresponding mounting holes, so that the upper reflector 10 is tightly fixed on the upper table 31a of the radiator 30; similarly, screws are sequentially passed through the lower reflector positioning hole 131 and the lower reflector positioning plate 23 on the lower reflector positioning plate 23 Corresponding mounting holes on the lower table surface 31b of the radiator positioning platform 31, thereby the lower reflector cup 20 is tightly fixed on the lower table surface 31b of the radiator 30; and on the rear side of the radiator 30 away from the sleeve 50 The power adapter board 90 and the fan 100 are fixedly installed, and the light blocking mechanism 60 is installed on the front side of the radiator 30 .

When installing the lens, the lens 40 enters from the opening on the side of the fixed seat 52 of the sleeve 50, and moves to the front end of the cylinder along the inner wall of the cylinder to the slope of the limit block 54, and the rear end of the lens 40 moves along the limit block 54. The inclined plane continues to move forward and stretches the limit block 54 at the front end of the claw 53, and finally the lens 40 enters the limit area between the limit block 54 and the limit flange 51, and at this time, the front end of the claw 53 elastically returns to the original position , then the lens 40 is tightly buckled in the sleeve 50 .

The sleeve 50 after the lens 40 is installed is tightly fixed with the butt plate 33 of the radiator 30 through the process installation hole 56 and the fastening screw hole on the fixing seat 52 .

The upper LED light source 80a and the lower LED light source 80b are respectively connected to the power adapter board 90 through the cable, and the upper LED light source 80a, the lower LED light source 80b and the power adapter board 90 are connected during operation, and the upper LED light source 80a and the lower LED light source 80b Both are energized to emit light, and the light emitted by the upper LED light source 80a is reflected by the reflective surface 111 of the upper reflective cup 10, while the light emitted by the lower LED light source 80b is reflected by the reflective surface 211 of the lower reflective cup 20, that is, the upper LED light source 80a, the lower reflective cup The light emitted by the LED light source 80b is firstly reflected by the upper and lower reflective cups once, and the reflected light is projected after being optically refracted twice by the lens 40, and finally the light emitted by the upper LED light source 80a and the lower LED light source 80b are effectively superimposed Together, we can obtain outgoing light with more ideal light type, higher brightness and light efficiency.

In addition, after the upper reflector 10 and the lower reflector 20 are fixed on the radiator 30, lenses of different sizes can be connected through different sleeves, and the entire automobile headlight can also be installed on different lamps with different mounting brackets Inside, the flexible structure can be more suitable for different car headlights.

To sum up, the light pattern obtained by the optical system in the present invention meets or even exceeds the requirements of the national standard regardless of width, thickness, uniformity or visible illuminance, and the cut-off line of light and shade is clear, and the driving experience is safe and reliable. .

Claims (10)

1. A high-efficiency LED dual-chip far and near light integrated automotive headlight optical system, comprising an LED light source, a reflector, and a lens (40), is characterized in that: The LED light source includes an upper LED light source (80a) arranged on the upper table (31a) of the positioning platform and a lower LED light source (80b) arranged on the lower table (31b) of the positioning platform; The reflective cup is divided into an upper reflective cup (10) matched with the upper LED light source (80a) and a lower reflective cup (20) matched with the lower LED light source (80b); The lens (40) is a plano-convex lens, including a planar incident surface (42) and an outer convex surface (41) for light output; the lens (40) is provided with a convex surface near the incident surface (42). The positioning convex ring (43) on the outside of the convex surface (41), the rotation axis of the convex surface (41) and the positioning convex ring (43) coincide with each other; the incident surface (42) and the convex surface for light output Be a transparent mirror body between (41); Suppose the thickness of the outer convex surface (41) of said lens (40) is B, and the thickness from the outer convex surface (41) top to the positioning convex ring (43) side is B/ The front section of 3 is an ellipsoid, and the rear section with a thickness of 2B/3 is a paraboloid; the connection between the ellipsoid-shaped front section and the paraboloid-shaped rear section is smoothly transitioned. 2. The high-efficiency LED double-chip far and near light integrated automotive headlight optical system according to claim 1, characterized in that: the upper reflector cup (10) includes an upper reflector cup body (11), the The interior of the upper reflective cup body (11) is the upper reflective cup reflective surface (111), from the cup mouth of the upper reflective cup (10) to the side away from the cup mouth of the upper reflective cup (10), the reflective surface of the upper reflective cup (111) Consists of the first upper reflective cup reflective surface connected in sequence, the second upper reflective cup reflective surface, and the third upper reflective cup reflective surface, the first upper reflective cup reflective surface, the second upper reflective cup reflective surface, the second upper reflective cup reflective surface, The reflective surfaces of the three upper reflective cups are curved surfaces fitted by quadratic Bezier curves, between the reflective surface of the first upper reflective cup and the second upper reflective cup The junctions between the reflective surfaces of the reflective cups are all smooth transitions, and the radius of curvature of the first upper reflective cup reflective surface, the second upper reflective cup reflective surface, and the third upper reflective cup reflective surface decreases in turn. 3. The high-efficiency LED double-chip far and near light integrated automobile headlight optical system according to claim 2, characterized in that: the upper reflector cup body (11) is provided with a vertical shape on the side of the cup mouth. The upper reflective cup reinforcing plate (12) provided, the bottom of the upper reflective cup body (11) is provided with an outwardly protruding, horizontally arranged upper reflective cup positioning plate (13); the upper reflective cup reinforcing plate (12) The plane obtained by the intersection of the central axis and the central axis of the upper reflective cup positioning plate (13) is the upper reflective cup projection surface, and the projection length of the upper reflective cup positioning plate (13) on the upper reflective cup projection surface is greater than that of the upper reflective cup The projection length of the reinforcing plate (12) on the projection surface of the upper reflector. 4. the high-efficiency LED double-chip far and near light integrated automobile headlight optical system according to claim 3 is characterized in that: the projection length of the upper reflector positioning plate (13) on the upper reflector projection surface is L1, the upper reflector positioning plate with a length of 2L1/5 near the cup mouth is the front part of the upper reflector positioning plate, and the upper reflector positioning plate with a length of L1/5 away from the cup mouth is the upper reflector positioning The rear part of the plate, the upper reflector positioning plate with a middle length of 2L1/5 is the middle part of the upper reflective cup positioning plate; the first upper reflective cup reflective surface is connected with the front part of the upper reflective cup positioning plate correspondingly, the second upper The reflective surface of the reflective cup is correspondingly connected with the middle portion of the upper reflective cup positioning plate, and the third reflective surface of the upper reflective cup is correspondingly connected with the rear portion of the upper reflective cup positioning plate. 5. The high-efficiency LED double-chip far and near light integrated automobile headlight optical system according to claim 4, characterized in that: the lower reflector cup (20) comprises a lower reflector cup body (21), the The interior of the lower reflective cup body (22) is the lower reflective cup reflective surface (222), from the cup mouth of the lower reflective cup (20) to the side far away from the cup mouth of the lower reflective cup (20), the lower reflective cup reflective surface (222) Consists of the first lower reflective cup reflective surface, the second lower reflective cup reflective surface, and the third lower reflective cup reflective surface connected in sequence, the first lower reflective cup reflective surface, the second lower reflective cup reflective surface, the second lower reflective cup reflective surface, The reflective surfaces of the three reflective cups are all curved surfaces fitted by quadratic Bezier curves, between the reflective surface of the first reflective cup and the reflective surface of the second reflective cup and The junctions between the reflective surfaces of the reflective cups are all smooth transitions, and the radius of curvature of the first lower reflective cup reflective surface, the second lower reflective cup reflective surface, and the third lower reflective cup reflective surface decreases successively. 6. The high-efficiency LED double-chip far and near light integrated automobile headlight optical system according to claim 5, characterized in that: the lower reflector cup body (21) is provided with a vertical shape on the side of the cup mouth. The lower reflective cup reinforcing plate (22) provided, the bottom of the lower reflective cup body (21) is provided with outwardly protruding, horizontally arranged lower reflective cup positioning plate (23); the lower reflective cup reinforcing plate (22) The plane obtained by the intersection of the central axis and the central axis of the lower reflective cup positioning plate (23) is the lower reflective cup projection surface, and the projection length of the lower reflective cup positioning plate (23) on the lower reflective cup projection surface is greater than that of the lower reflective cup. The projection length of the plate (22) on the projection surface of the lower reflector cup. 7. The high-efficiency LED double-chip far and near light integrated automobile headlight optical system according to claim 6 is characterized in that: the projection of the plate surface of the lower reflector positioning plate (23) on the lower reflector projection surface is set. The length is L, the lower reflector positioning plate with a length of L2/6 near the cup mouth is the front part of the lower reflector positioning plate, and the lower reflector positioning plate with a length of L2/6 away from the cup mouth is the lower reflector The rear part of the cup positioning plate, the lower reflective cup positioning plate with a middle length of 2L2/3 is the middle part of the lower reflective cup positioning plate; the first lower reflective cup reflective surface is connected with the front part of the lower reflective cup positioning plate correspondingly, the second The reflective surface of the second lower reflective cup is correspondingly connected with the middle section of the lower reflective cup positioning plate, and the reflective surface of the third lower reflective cup is correspondingly connected with the rear section of the lower reflective cup positioning plate. 8. The high-efficiency LED double-chip far and near light integrated automotive headlight optical system according to claim 7, characterized in that: the upper reflector positioning plate (13) is on the projection surface of the upper reflector, that is, the lower reflector The projected length L1 on the projected surface is greater than the projected length L2 of the lower reflective cup positioning plate (23) on the projected surface of the upper reflective cup, that is, the projected surface of the lower reflective cup. 9. The high-efficiency LED double-chip far and near light integrated automotive headlight optical system according to claim 1, characterized in that: the system also includes the upper reflector (10) and the lower reflector (20) The light blocking mechanism (60) in the front of the light exit, the light blocking mechanism (60) includes a positioning plate (61) fixedly connected with the radiator (30), the positioning plate (61) is provided with a light blocking plate (63) and a driving Mechanism (62); the drive mechanism (62) drives the light shield (63) to act so that the headlights of the automobile emit a low beam light type or a high beam light type. 10. The high-efficiency LED double-chip far and near light integrated automotive headlight optical system according to claim 9, characterized in that: the light baffle (63) includes a hinged joint for itself to form a hinged fit with the positioning plate (61). The rotating shaft hole (631); the light blocking plate (63) is respectively provided with a light blocking arm (632) and a toggle arm (633) for forming a cut-off line on the side of the rotating shaft hole (631); The light blocking arm (632) is plate-shaped, and the plate surface of the plate-shaped light blocking arm (632) is perpendicular to the light emitting direction, and the upper edge of the light blocking arm (632) is set on the side close to the rotation shaft hole (631). There is a first straight side (6321), and a second straight side (6323) is provided on the side away from the rotation shaft hole (631), and the first straight side (6321) and the second straight side (6323) are not parallel and are connected together by an upwardly protruding arc edge (6322), the highest point of the arc edge (6322) protrudes from the upper side of the first straight edge (6321); The toggling arm (633) is provided with a toggling hole (6331), and the output end of the driving mechanism (62), that is, the end of the toggling shaft (621), extends into the toggling hole (6331). The toggling shaft (621) of (62) drives the light-shielding arm (632) of the light-shielding plate (63) to rotate up and down around the rotating shaft hole (631) through the toggling hole (6331), so that the headlight of the automobile emits low beam light type or high beam light type.