Automatic anti-dazzling distance light module and automobile
By employing a dual-row LED lamp bead and a sawtooth-structured inner lens design in the automatic anti-glare high beam module, the problems of low mechanical strength and low light efficiency of existing modules are solved, achieving efficient and low-cost clear pixel imaging.
Patent Information
- Application Number
- CN202520143388.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing automatic anti-glare high beam modules mainly use a single row of pixels, while modules with a double row of pixels suffer from problems such as low mechanical strength, low light efficiency, or high cost.
It adopts a dual-row LED lamp bead setup, and the inner lens includes first and second light-emitting areas with a sawtooth structure. After total internal reflection in the inner lens, the light is modulated by the folded and arc-shaped light-emitting surfaces, and combined with the outer lens to form a clear two-row pixel image.
It improves the luminous efficiency and mechanical strength of the automatic anti-glare high beam module, reduces costs, and forms a uniform light pattern with a small outer lens size.
Smart Images
Figure CN223635975U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of automobiles, in particular to an automatic anti-dazzling high beam module and an automobile comprising the same. BACKGROUND
[0002] With the development of automobile technology, automobile lighting safety is increasingly valued by people, and higher requirements are put forward for car light illumination. The automatic anti-dazzling technology (ADB, Adaptive Driving Beam) is an intelligent automobile technology that reduces strong light interference by adjusting the reflectivity of the rearview mirror. For example, when the car is driving in a relatively dark environment, such as at night or in a tunnel, the light sensor in the rearview mirror will sense the strong light source such as the headlamp of the vehicle behind, and when the detected light intensity exceeds the preset glare standard, the car system will automatically adjust the reflectivity of the lens to reduce the reflection of strong light, thereby reducing the visual interference of the driver.
[0003] The automatic anti-dazzling high beam module currently on the market mainly adopts a single row of pixel arrangement, and there are few double rows of pixel arrangements. Therefore, the automatic anti-dazzling high beam module with double rows of pixel arrangements has become a research hotspot for those skilled in the art. CONTENT OF THE UTILITY MODEL
[0004] In view of the above problems, the present application provides an automatic anti-dazzling high beam module and an automobile comprising the same, so as to achieve the purpose of providing a new automatic anti-dazzling high beam module with double rows of pixel arrangements. The specific scheme is as follows:
[0005] An automatic anti-dazzling high beam module comprises:
[0006] a substrate;
[0007] a plurality of LED lamp beads fixed on the substrate, the plurality of LED lamp beads comprising a first row of LED lamp beads and a second row of LED lamp beads arranged along a first direction;
[0008] an inner lens located on the light exit light path of the LED lamp beads;
[0009] an outer lens located on the light exit light path of the inner lens;
[0010] The inner lens comprises a first part, a second part facing the LED lamp beads, and a third part facing the outer lens. The second part comprises a plurality of sawteeth extending along a first direction and arranged along a second direction. The first direction and the second direction are parallel to the interface between the first part and the third part, and the first direction and the second direction are different. The third part comprises a first light-emitting area and a second light-emitting area arranged along the first direction. The first light-emitting area has a folded light-emitting surface facing the outer lens, and the second light-emitting area has an arc-shaped light-emitting surface facing the outer lens. In a third direction, the first light-emitting area covers the first row of LED lamp beads, and the second light-emitting area covers the second row of LED lamp beads. The third direction is perpendicular to the plane formed by the first direction and the second direction.
[0011] Optionally, the sawteeth have a first surface facing the first part and a second surface facing the LED lamp beads. The area of the second surface is smaller than the area of the first surface.
[0012] The second surface is parallel to the first surface, and the second part further comprises a first side surface and a second side surface perpendicular to the first part. The first side surface and the second side surface are arranged along the second direction, and the first side surface and the second side surface are parallel.
[0013] Optionally, in the third direction, the size of the sawteeth ranges from 2mm to 3mm; in the second direction, the size of the sawteeth ranges from 1mm to 2mm; and in the second direction, the distance between the centers of adjacent sawteeth ranges from 1.5mm to 3mm.
[0014] Optionally, the first direction is perpendicular to the second direction, and the ratio of the size of the second surface of the sawteeth in the first direction to the size of the second surface of the sawteeth in the second direction is greater than 8.
[0015] Optionally, in the third direction, the cross-sectional view of the folded light-emitting surface is a triangle, and the included angle between the side of the folded light-emitting surface facing the arc-shaped light-emitting surface and the third direction ranges from 40° to 70°.
[0016] Optionally, in the third direction, the cross-sectional view of the arc-shaped light-emitting surface is a part of a circle.
[0017] Optionally, the first row of LED lamp beads comprises a first group of LED lamp beads on the first side of the center line and a second group of LED lamp beads on the second side of the center line. The number of LED lamp beads in the first group of LED lamp beads is greater than the number of LED lamp beads in the second group of LED lamp beads.
[0018] The second row of LED lamp beads comprises a third group of LED lamp beads on the first side of the center line and a fourth group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the third group of LED lamp beads being greater than the number of LED lamp beads in the fourth group of LED lamp beads;
[0019] The center line is parallel to the third direction and passes through the focal point of the outer lens.
[0020] Optionally, the first row of LED lamp beads comprises a first group of LED lamp beads on the first side of the center line and a second group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the first group of LED lamp beads being the same as the number of LED lamp beads in the second group of LED lamp beads;
[0021] The second row of LED lamp beads comprises a third group of LED lamp beads on the first side of the center line and a fourth group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the third group of LED lamp beads being the same as the number of LED lamp beads in the fourth group of LED lamp beads;
[0022] The center line is parallel to the third direction and passes through the focal point of the outer lens.
[0023] A vehicle, the vehicle comprising a first automatic anti-dazzling high beam module and a second automatic anti-dazzling high beam module, at least one of the first automatic anti-dazzling high beam module and the second automatic anti-dazzling high beam module being the automatic anti-dazzling high beam module of any one of the above.
[0024] Optionally, the first row of LED lamp beads comprises a first group of LED lamp beads on the first side of the center line and a second group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the first group of LED lamp beads being greater than the number of LED lamp beads in the second group of LED lamp beads; the second row of LED lamp beads comprises a third group of LED lamp beads on the first side of the center line and a fourth group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the third group of LED lamp beads being greater than the number of LED lamp beads in the fourth group of LED lamp beads; and the center line is parallel to the third direction and passes through the focal point of the outer lens.
[0025] The second group of LED lamp beads of the first automatic anti-dazzling high beam module is located on the side of the first group of LED lamp beads thereof facing the second automatic anti-dazzling high beam module, and the fourth group of LED lamp beads of the first automatic anti-dazzling high beam module is located on the side of the third group of LED lamp beads thereof facing the second automatic anti-dazzling high beam module.
[0026] The second group of LED lamp beads of the second automatic anti-dazzling high beam module is located on the side of the first group of LED lamp beads of the second automatic anti-dazzling high beam module facing the first automatic anti-dazzling high beam module, and the fourth group of LED lamp beads of the second automatic anti-dazzling high beam module is located on the side of the third group of LED lamp beads of the second automatic anti-dazzling high beam module facing the first automatic anti-dazzling high beam module.
[0027] In the automatic anti-dazzling high beam module provided in the embodiments of the present application, the sawtooth on the light entrance surface of the inner lens has a small size in the third direction, is short, has high mechanical strength and is easy to process, the light exit surface of the inner lens includes a folded light exit surface and an arc-shaped light exit surface, has high light efficiency, and can form clear imaging of two rows of pixels in the case of small size of the outer lens.
[0028] In addition, in the automatic anti-dazzling high beam module provided in the embodiments of the present application, only two optical elements, the inner lens and the outer lens, are included in addition to the substrate and the lamp beads, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS
[0029] The above and other features, advantages, and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the original and elements are not necessarily drawn according to the scale.
[0030] Figure 1 A structure schematic diagram of an automatic anti-dazzling high beam module provided in the present application;
[0031] Figure 2 A structure schematic diagram of one angle of an inner lens in an automatic anti-dazzling high beam module provided in the present application;
[0032] Figure 3 A structure schematic diagram of another angle of an inner lens in an automatic anti-dazzling high beam module provided in the present application;
[0033] Figure 4 A structure schematic diagram of still another angle of an inner lens in an automatic anti-dazzling high beam module provided in the present application;
[0034] Figure 5 A light path schematic diagram of an automatic anti-dazzling high beam module provided in the present application;
[0035] Figure 6 A light type schematic diagram corresponding to a folded light exit surface in the working of an automatic anti-dazzling high beam module provided in the present application;
[0036] Figure 7 A light type schematic diagram corresponding to an arc-shaped light exit surface in the working of an automatic anti-dazzling high beam module provided in the present application;
[0037] Figure 8A schematic diagram of the light pattern combined by the light pattern corresponding to the folded light exit surface and the light pattern corresponding to the arc-shaped light exit surface in the working state of the automatic anti-dazzling high beam module provided in the present application;
[0038] Figure 9 Another schematic diagram of the structure of the inner lens in the automatic anti-dazzling high beam module provided in the present application;
[0039] Figure 10 Another schematic diagram of the structure of the automatic anti-dazzling high beam module provided in the present application;
[0040] Figure 11 A schematic diagram of the arrangement of the lamp beads on the substrate in the automatic anti-dazzling high beam module provided in the present application. DETAILED DESCRIPTION
[0041] The embodiments in the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0042] Various modifications and changes can be made to the present application without departing from the spirit or scope of the present application, which will be apparent to one of ordinary skill in the art. Thus, the present application intends to cover all modifications and changes falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in the present application can be combined with each other without contradiction.
[0043] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.
[0044] As described in the background section, the automatic anti-dazzling high beam module with double-row pixel arrangement has become a research hotspot for those skilled in the art.
[0045] Currently, the automatic anti-dazzling high beam module with double-row pixel arrangement mainly has two types:
[0046] One is to converge the light of two rows of LED particles at the focal point of a projection module (outer lens) through light guide teeth, each light guide tooth corresponding to an LED, and then project the light at the focal point out through the projection module (outer lens). However, the light guide teeth in this structure are long, have low mechanical strength, and are not easy to process. Moreover, since the projection module (outer lens) needs a certain focal length to ensure the brightness of the automatic anti-dazzling high beam module and a certain size to collect the light gathered at the focal point, this results in that when the size of the automatic anti-dazzling high beam module is very narrow, the light efficiency is particularly low, resulting in a large size of the lens, which is not conducive to application in the whole lamp.
[0047] Another is to add a condenser lens in the light-emitting direction of the LED and then add a projection module. In order to improve the imaging quality, the projection module is composed of two lenses, but the cost of this structure is high.
[0048] Therefore, the present application provides an automatic anti-dazzling high beam module, as shown in Figures 1-4 , which comprises:
[0049] a substrate 10;
[0050] a plurality of LED lamp beads 20 fixed on the substrate 10, as shown in Figure 4 , the plurality of LED lamp beads 20 comprising a first row of LED lamp beads 21 and a second row of LED lamp beads 22 arranged along a first direction X;
[0051] an inner lens 30 located on the light-emitting light path of the LED lamp beads 20;
[0052] an outer lens 40 located on the light-emitting light path of the inner lens 30.
[0053] In the present embodiment, as shown in Figure 2 , the inner lens 30 comprises a first part 31, a second part 32 facing the LED lamp beads 20, and a third part 33 facing the outer lens 40, wherein, as shown in Figure 3 , the second part 32 comprises a plurality of sawteeth 321 extending along a first direction X and arranged along a second direction Y, the first direction X and the second direction Y being parallel to the interface between the first part 31 and the third part 33, and the first direction X and the second direction Y being different; as shown in Figure 1 and Figure 2 , the third part 33 comprises a first light-emitting area 331 and a second light-emitting area 332 arranged along the first direction X, the first light-emitting area 331 having a folded light-emitting surface facing the outer lens 40, and the second light-emitting area 332 having an arc-shaped light-emitting surface facing the outer lens 40; as Figure 4As shown, in the third direction Z, the first light-emitting area 331 covers the first row of LED lamp beads 21, and the second light-emitting area 332 covers the second row of LED lamp beads 22, and the third direction Z is perpendicular to the plane formed by the first direction X and the second direction Y. Specifically, in an embodiment of the present application, one sawtooth corresponds to two LED lamp beads, and the two LED lamp beads corresponding to the same sawtooth are arranged in the first direction and in the third direction, wherein one LED lamp bead is located in the coverage range of the first light-emitting area, and the other LED lamp bead is located in the coverage range of the second light-emitting area.
[0054] The automatic anti-dazzling high beam module provided in the embodiments of the present application has the advantages that Figure 5 As shown, the light emitted by the first row of LED lamp beads 21 enters part of the sawtooth of the inner lens 30, is totally reflected and converged in the sawtooth, and then is modulated by the first light-emitting area after being modulated by the first light-emitting area, is deflected to the side away from the arc-shaped light-emitting surface, and then is modulated by the upper half area of the outer lens 40 in the first direction to form a first light pattern, as shown in Figure 6 As shown, the light emitted by the second row of LED lamp beads 22 enters part of the sawtooth of the inner lens 30, is totally reflected and converged in the sawtooth, and then is modulated by the second light-emitting area after being modulated by the arc-shaped light-emitting surface, is deflected to the side away from the arc-shaped light-emitting surface, and then is modulated by the lower half area of the outer lens 40 in the first direction to form a second light pattern, as shown in Figure 7 In this embodiment, when the first row of LED lamp beads 21 and the second row of LED lamp beads 22 are lit at the same time, the partial area of the first light pattern towards the side of the second light pattern overlaps with the partial area of the second light pattern towards the side of the first light pattern, so as to obtain a third light pattern meeting the design requirements of the automobile high beam system by the combination of the first light pattern and the second light pattern, as shown in Figure 8 As shown, and the corresponding light intensity of each part in the third light pattern is relatively uniform without obvious mutation, and on the basis of obtaining the target light pattern of the automatic anti-dazzling high beam module, the uniformity of the light intensity of the automatic anti-dazzling high beam module is improved. It should be noted that in the third light pattern, the first light pattern is the lower light pattern in the third light pattern, and the second light pattern is the upper light pattern in the third light pattern.
[0055] Optionally, in an embodiment of the present application, the sawtooth has a first surface facing the first part and a second surface facing the LED lamp bead, and the area of the second surface is smaller than the area of the first surface, so as to facilitate the manufacturing of the sawtooth, but the present application does not limit this, and the specific conditions are determined accordingly.
[0056] Based on the above embodiments, in one embodiment of this application, the second surface is parallel to the first surface, and the second part further includes a first side and a second side perpendicular to the first part. The first side and the second side are arranged along the second direction and are parallel to each other, so as to reduce the size of the serrations in the second direction. This makes it easier to set more LED beads and improve the light output brightness of the automatic anti-glare high beam module, provided that the substrate size is fixed.
[0057] Optionally, in one embodiment of this application, the first direction is perpendicular to the second direction, such as... Figure 3 and Figure 9 As shown, the dimension of the second surface of the serration 321 in the first direction X is the same as the dimension of the second surface of the serration 321 in the... The ratio of the size in the second direction Y is > 8 to increase the distance between the two LED lamp beads 20 corresponding to the same sawtooth 321 This reduces light crosstalk between two LED beads 20 corresponding to the same sawtooth 321, that is, it reduces light crosstalk between the first row of LED beads and the second row of LED beads.
[0058] Based on any of the above embodiments, in one embodiment of this application, in the third direction, the size of the saw teeth ranges from 2mm to 3mm to reduce the manufacturing difficulty of the saw teeth and to give the saw teeth a better light-focusing effect, thereby improving the light output efficiency of the automatic anti-glare high beam module. It should be noted that in this embodiment, the size of the saw teeth in the third direction ranges from 2mm to 3mm, which also makes the saw teeth less prone to deformation during use and gives them better mechanical properties. However, this application does not limit this, and the specific size depends on the processing and usage requirements.
[0059] Based on any of the above embodiments, in one embodiment of this application, the size of the serrations in the second direction ranges from 1mm to 2mm, such as 1.2mm, so as to increase the width of the serrations in the second direction without reducing the number of LED beads that can be arranged on the substrate in the second direction, thereby improving the light-gathering effect of the serrations and thus improving the light output efficiency of the automatic anti-glare high beam module. However, this application does not limit this, and the specific size depends on the processing and usage requirements.
[0060] Based on any of the above embodiments, in one embodiment of this application, the distance between the centers of adjacent serrations in the second direction ranges from 1.5mm to 3mm, such as around 2mm, to increase the density of LED beads disposed on the substrate in the second direction while keeping the spacing between adjacent LED beads fixed, thereby increasing the luminous brightness of the automatic anti-glare high beam module. However, this application does not limit this, and the specific value depends on the processing and usage requirements.
[0061] In one embodiment of the present application, on the basis of any of the above embodiments, the folding light-emitting surface is stretched along the second direction by a straight line. Figure 4 As shown in the figure, in the third direction Z, the cross-sectional view of the folding light-emitting surface is a triangle, and the included angle between the side of the folding light-emitting surface facing the arc-shaped light-emitting surface and the third direction is in the range of 40°-70°; specifically, the folding light-emitting surface includes a first light-emitting surface facing the arc-shaped light-emitting surface and a second light-emitting surface away from the arc-shaped light-emitting surface, and the side of the first light-emitting surface away from the first part is connected to the side of the second light-emitting surface away from the first part. In this embodiment, the included angle a between the first light-emitting surface and the third direction is in the range of 40°-70°, so that the first light pattern corresponding to the folding light-emitting surface and the second light pattern corresponding to the arc-shaped light-emitting surface can partially overlap, and the light rays at different positions on the third light pattern formed by the combination of the first light pattern and the second light pattern are relatively uniform. However, the present application does not limit this, and the actual situation of the first light pattern, the second light pattern, and the third light pattern can be adjusted accordingly.
[0062] Optionally, in one embodiment of the present application, the folding light-emitting surface can be stretched along the second direction by a straight line, but the present application does not limit this, and the specific situation is determined accordingly.
[0063] In one embodiment of the present application, on the basis of the above embodiments, the folding light-emitting surface is stretched along the second direction by a straight line. Figure 4 As shown in the figure, the second light-emitting surface can be parallel to the third direction Z, that is, the angle between the second light-emitting surface and the third direction Z is 0°, that is, in the third direction Z, the cross-sectional view of the folding light-emitting surface is a right triangle, but the present application does not limit this, and the specific situation is determined accordingly.
[0064] In one embodiment of the present application, on the basis of any of the above embodiments, the arc-shaped light-emitting surface is a curved surface, and in the third direction, the cross-sectional view of the arc-shaped light-emitting surface can be a part of a circle or a non-standard part of a circle, and the present application does not limit this, and the specific situation is determined accordingly. Optionally, in one embodiment of the present application, the arc-shaped light-emitting surface can be stretched along the third direction by a circle or a curve, but the present application does not limit this, and the specific situation is determined accordingly.
[0065] Specifically, in one embodiment of the present application, in order to ensure the illumination effect of a single pixel in the automatic anti-dazzle high beam module, the arc-shaped light-emitting surface can be a part of an aspherical surface, wherein one pixel corresponds to one LED, but the present application does not limit this, and the specific situation is determined accordingly.
[0066] A line parallel to the third direction and passing through the junction line of the folding light-emitting surface and the arc-shaped light-emitting surface is the 0° line A, as shown in the figure. Figure 6As shown, the portion of the first light pattern below the 0° line is greater than the portion of the first light pattern above the 0° line, as Figure 7 As shown, the portion of the second light pattern below the 0° line is less than the portion of the second light pattern above the 0° line.
[0067] On the basis of any of the above embodiments, in an embodiment of the present application, the material of the inner lens is PMMI-TT50, or can be transparent materials such as silica gel or PC (polycarbonate), which is not limited in the present application, and is determined according to the specific circumstances. It should be noted that PMMI-TT50 is a high heat deformation resistant polymethyl methacrylate material, and the specific model is TT50, which has high heat resistance, high transmittance, high strength and rigidity, good weather resistance and other characteristics.
[0068] On the basis of any of the above embodiments, in an embodiment of the present application, the outer lens is a convex lens, and the material of the outer lens can be PMMA (acrylic) or other transparent materials, which is not limited in the present application, and is determined according to the specific circumstances.
[0069] On the basis of any of the above embodiments, in an embodiment of the present application, as Figure 10 and Figure 11 As shown, the first row of LED lamp beads 21 includes a first group of LED lamp beads 211 on the first side of the center line B and a second group of LED lamp beads 212 on the second side of the center line B, the number of LED lamp beads in the first group of LED lamp beads 211 is greater than the number of LED lamp beads in the second group of LED lamp beads 212; the second row of LED lamp beads 22 includes a third group of LED lamp beads 221 on the first side of the center line B and a fourth group of LED lamp beads 222 on the second side of the center line B, the number of LED lamp beads in the third group of LED lamp beads 221 is greater than the number of LED lamp beads in the fourth group of LED lamp beads 222; wherein the center line B is parallel to the third direction and passes through the focal point of the outer lens 40, and the dividing line C is perpendicular to the center line B and intersects the center line B, so as to reduce the number of required LED lamp beads and reduce the cost of the automatic anti-dazzling high beam module on the basis of ensuring the illumination width of the automatic anti-dazzling high beam module in the second direction Y.
[0070] Optionally, in an embodiment of the present application, as Figure 11As shown, the first row of LED lamp beads 21 includes 16 LED lamp beads, the first group of LED lamp beads 211 includes 10 LED lamp beads arranged in the second direction, and the second group of LED lamp beads 212 includes 6 LED lamp beads arranged in the second direction; the second row of LED lamp beads 22 includes 16 LED lamp beads, the third group of LED lamp beads 221 includes 10 LED lamp beads arranged in the second direction, and the fourth group of LED lamp beads 222 includes 6 LED lamp beads arranged in the second direction; so that the light pattern of the automatic anti-dazzle high beam module is a non-symmetrical light pattern. However, the present application does not make any limitation on this, and the specific arrangement combination can be determined as appropriate. However, the present application does not make any limitation on this, and in other embodiments of the present application, the first row of LED lamp beads can include other number of LED lamp beads and / or other arrangement combination, which can be determined as appropriate.
[0071] In another embodiment of the present application, the first row of LED lamp beads includes a first group of LED lamp beads on the first side of the center line and a second group of LED lamp beads on the second side of the center line, and the number of LED lamp beads in the first group of LED lamp beads is the same as the number of LED lamp beads in the second group of LED lamp beads; the second row of LED lamp beads includes a third group of LED lamp beads on the first side of the center line and a fourth group of LED lamp beads on the second side of the center line, and the number of LED lamp beads in the third group of LED lamp beads is the same as the number of LED lamp beads in the fourth group of LED lamp beads; the center line is parallel to the third direction and passes through the focal point of the outer lens, so as to improve the light brightness of the automatic anti-dazzle high beam module.
[0072] Optionally, in an embodiment of the present application, the first row of LED lamp beads includes 20 LED lamp beads, the first group of LED lamp beads includes 10 LED lamp beads arranged in the second direction, and the second group of LED lamp beads includes 10 LED lamp beads arranged in the second direction; the second row of LED lamp beads includes 20 LED lamp beads, the third group of LED lamp beads includes 10 LED lamp beads arranged in the second direction, and the fourth group of LED lamp beads includes 10 LED lamp beads arranged in the second direction. However, the present application does not make any limitation on this, and the specific arrangement combination can be determined as appropriate.
[0073] In summary, in the automatic anti-dazzling high beam module provided by the embodiments of the present application, the size of the sawtooth on the light entrance surface of the inner lens in the third direction is small, i.e., the sawtooth is short, the mechanical strength is high and the inner lens is easy to process, the light exit surface of the inner lens includes a folded light exit surface and an arc-shaped light exit surface, the light efficiency is high, and clear imaging of two rows of pixels can be formed under the condition that the size of the outer lens is small.
[0074] In addition, in the automatic anti-dazzling high beam module provided by the embodiments of the present application, in addition to the substrate and the lamp beads, only two optical elements, i.e., the inner lens and the outer lens, are included, and the cost is low.
[0075] Correspondingly, the embodiments of the present application also provide a vehicle, the vehicle includes a first automatic anti-dazzling high beam module and a second automatic anti-dazzling high beam module, at least one of the first automatic anti-dazzling high beam module and the second automatic anti-dazzling high beam module is the automatic anti-dazzling high beam module provided by any one of the above embodiments, so as to improve the light efficiency and the mechanical strength of the automatic anti-dazzling high beam module in the vehicle and reduce the cost of the automatic anti-dazzling high beam module.
[0076] Specifically, the automatic anti-dazzling high beam module includes a substrate, a plurality of LED lamp beads fixed on the substrate, the plurality of LED lamp beads include a first row of LED lamp beads and a second row of LED lamp beads arranged along a first direction X, an inner lens located on a light exit light path of the LED lamp beads, and an outer lens located on a light exit light path of the inner lens.
[0077] In the embodiment, the inner lens includes a first part, a second part facing the LED lamp beads, and a third part facing the outer lens, the second part includes a plurality of sawtooth extending along a first direction and arranged along a second direction, the first direction and the second direction are parallel to the interface between the first part and the third part, and the first direction and the second direction are different, the third part includes a first light exit area and a second light exit area arranged along the first direction, the first light exit area has a folded light exit surface facing the outer lens, and the second light exit area has an arc-shaped light exit surface facing the outer lens; in a third direction, the first light exit area covers the first row of LED lamp beads, the second light exit area covers the second row of LED lamp beads, and the third direction is perpendicular to the plane formed by the first direction and the second direction. Specifically, in one embodiment of the present application, one sawtooth corresponds to two LED lamp beads, and the two LED lamp beads corresponding to the same sawtooth are arranged in the first direction and in the third direction, wherein one LED lamp bead is located in the coverage range of the first light exit area, and the other LED lamp bead is located in the coverage range of the second light exit area.
[0078] In the embodiment, the light emitted by the first row of LED lamp beads enters the partial sawtooth of the inner lens, is totally reflected and converged in the sawtoeth, is then modulated by the first light-out area of the fold-shaped light-out surface, is deflected to the side away from the arc-shaped light-out surface, and is modulated by the upper half area of the outer lens in the first direction to form the first light pattern. The light emitted by the second row of LED lamp beads enters the partial sawtooth of the inner lens, is totally reflected and converged in the sawtoeth, is then modulated by the second light-out area of the arc-shaped light-out surface, is deflected to the side away from the fold-shaped light-out surface, and is modulated by the lower half area of the outer lens in the first direction to form the second light pattern. When the first row of LED lamp beads and the second row of LED lamp beads are lit at the same time, the partial area of the first light pattern towards the side of the second light pattern and the partial area of the second light pattern towards the side of the first light pattern overlap, so that the third light pattern meeting the design requirements of the automobile high beam system is obtained by the combination of the first light pattern and the second light pattern, and the light brightness of each part of the third light pattern is relatively uniform without obvious mutation. On the basis of obtaining the target light pattern of the automatic anti-dazzle high beam module, the uniformity of the light brightness of the automatic anti-dazzle high beam module is improved. It should be noted that in the third light pattern, the first light pattern is the lower light pattern in the third light pattern, and the second light pattern is the upper light pattern in the third light pattern.
[0079] On the basis of any of the above embodiments, in an embodiment of the present application, in the third direction, the cross-sectional view of the fold-shaped light-out surface is a triangle, and the angle formed between the side of the fold-shaped light-out surface facing the arc-shaped light-out surface and the third direction is in the range of 40°-70°. Specifically, the fold-shaped light-out surface includes a first light-out surface facing the arc-shaped light-out surface and a second light-out surface away from the arc-shaped light-out surface, and the side of the first light-out surface away from the first part is connected to the side of the second light-out surface away from the first part. In the embodiment, the angle formed between the first light-out surface and the third direction is in the range of 40°-70°, so that the first light pattern corresponding to the fold-shaped light-out surface and the second light pattern corresponding to the arc-shaped light-out surface can partially overlap, and the light brightness of each part of the third light pattern formed by the combination of the first light pattern and the second light pattern is relatively uniform. However, the present application does not limit this, and the actual situation of the first light pattern, the second light pattern and the third light pattern can be adjusted.
[0080] On the basis of the above embodiments, in an embodiment of the present application, the second light-out surface can be parallel to the third direction, that is, the angle between the second light-out surface and the third direction is 0°, that is, in the third direction, the cross-sectional view of the fold-shaped light-out surface is a right triangle, but the present application does not limit this, and the specific situation is determined accordingly.
[0081] In the above any embodiment, in an embodiment of the present application, the arc-shaped light-out surface is a curved surface, and in the third direction, the arc-shaped light-out surface can be a part of a circle or a part of a non-standard circle, and the present application does not make any limitation, and the specific condition is determined accordingly. Optionally, in an embodiment of the present application, the arc-shaped light-out surface can be formed by stretching a circle or a curve in the third direction, but the present application does not make any limitation, and the specific condition is determined accordingly.
[0082] Specifically, in an embodiment of the present application, in order to ensure the lighting effect of a single pixel in the automatic anti-dazzle high beam module, the arc-shaped light-out surface can be a part of an aspherical surface, wherein one pixel corresponds to one LED, but the present application does not make any limitation, and the specific condition is determined accordingly.
[0083] Optionally, in an embodiment of the present application, the first automatic anti-dazzle high beam module and the second automatic anti-dazzle high beam module are both the automatic anti-dazzle high beam module provided in any of the above embodiments, so as to further improve the light efficiency and mechanical strength of the automatic anti-dazzle high beam module in the automobile and reduce the cost of the automatic anti-dazzle high beam module.
[0084] In the above any embodiment, in an embodiment of the present application, the first row of LED lamp beads comprises a first group of LED lamp beads on the first side of the center line and a second group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the first group of LED lamp beads is greater than the number of LED lamp beads in the second group of LED lamp beads; the second row of LED lamp beads comprises a third group of LED lamp beads on the first side of the center line and a fourth group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the third group of LED lamp beads is greater than the number of LED lamp beads in the fourth group of LED lamp beads; the center line is parallel to the third direction and passes through the focal point of the outer lens. In this embodiment, the second group of LED lamp beads of the first automatic anti-dazzling high beam module is located on the side of the first group of LED lamp beads of the first automatic anti-dazzling high beam module facing the second automatic anti-dazzling high beam module, the fourth group of LED lamp beads of the first automatic anti-dazzling high beam module is located on the side of the third group of LED lamp beads of the first automatic anti-dazzling high beam module facing the second automatic anti-dazzling high beam module, and the second group of LED lamp beads of the second automatic anti-dazzling high beam module is located on the side of the first group of LED lamp beads of the second automatic anti-dazzling high beam module facing the first automatic anti-dazzling high beam module, the fourth group of LED lamp beads of the second automatic anti-dazzling high beam module is located on the side of the third group of LED lamp beads of the second automatic anti-dazzling high beam module facing the first automatic anti-dazzling high beam module, so that the overall illumination width of the light illumination area of the first automatic anti-dazzling high beam module and the second automatic anti-dazzling high beam module can meet the requirements of the automobile high beam system in the horizontal direction in the case that the number of LED lamp beads in the second group of LED lamp beads and the fourth group of LED lamp beads is small.
[0085] In summary, in the automobile provided by the embodiment of the present application, the size of the sawtooth on the light entrance surface of the inner lens of at least one of the first automatic anti-dazzling high beam module and the second automatic anti-dazzling high beam module in the third direction is small, that is, the tooth is short, the mechanical strength is high and the processing is easy, the light exit surface of the inner lens comprises a folded light exit surface and an arc-shaped light exit surface, the light efficiency is high, and clear imaging of two rows of pixels can be formed in the case that the size of the outer lens is small.
[0086] In addition, in the automobile provided by the embodiment of the present application, at least one of the first automatic anti-dazzling high beam module and the second automatic anti-dazzling high beam module comprises only two optical elements, that is, the inner lens and the outer lens, in addition to the substrate and the lamp beads, and the cost is low.
[0087] The various embodiments described in this specification are intended to be illustrative only and are not intended to limit the scope of the application in any way. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The materials, methods, and examples provided herein are illustrative only and are not intended to be limiting. Other features of the application will be apparent from consideration of the specification and the drawings in which:
[0088] It has to be noted that, in the description of the application, the description of the figures and the embodiments is illustrative in nature and not restrictive. Like reference symbols in the drawings indicate like elements throughout the specification. It has also to be noted that the application is not limited to the embodiments described herein, but can vary within the scope of the claims, which are limited only by the principles of the application. In the description of the application, it has to be understood that the figures and the description of the embodiments are illustrative in nature and not restrictive. Like reference symbols in the drawings indicate like elements throughout the specification. It has also to be noted that in the present text the relationerminology such as first and second, and the like, is only used to distinguish one entity or action from another entity or action, and does not necessarily imply a relation or order between these entities or actions. Further, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process or method. The terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process or method.
[0089] The above description of disclosed embodiments provides examples, and is not intended to limit the scope, applicability, or configuration of the application in any way. Various modifications can also be made to the embodiments described without departing from the scope of the application, and the general principles defined herein can be applied to other embodiments and applications without departing from the scope of the application. Therefore, the application is not to be limited to the embodiments described herein, but is to be accorded the full scope consistent with the language of the claims, and is to be accorded the full scope consistent with the language of the claims, and is to be accorded the full scope consistent with the principles and novel features disclosed herein.
Claims
1. An automatic anti-dazzle high beam module, characterized in that, The application relates to a light-emitting device, comprising: a substrate; a plurality of LED lamp beads fixed on the substrate, the plurality of LED lamp beads comprising a first row of LED lamp beads and a second row of LED lamp beads arranged along a first direction; an inner lens located on a light-emitting path of the LED lamp beads; an outer lens located on a light-emitting path of the inner lens; wherein the inner lens comprises a first part, a second part facing the LED lamp beads, and a third part facing the outer lens, the second part comprises a plurality of sawteeth extending along the first direction and arranged along a second direction, the first direction and the second direction are parallel to the interface between the first part and the third part, and the first direction and the second direction are different; the third part comprises a first light-emitting area and a second light-emitting area arranged along the first direction, the first light-emitting area has a folded light-emitting surface facing the outer lens, and the second light-emitting area has an arc-shaped light-emitting surface facing the outer lens; in a third direction, the first light-emitting area covers the first row of LED lamp beads, and the second light-emitting area covers the second row of LED lamp beads, the third direction is perpendicular to the plane formed by the first direction and the second direction.
2. The automatic anti-dazzle high beam module according to claim 1, characterized in that the sawteeth have a first surface facing the first part and a second surface facing the LED lamp beads, the area of the second surface is smaller than the area of the first surface; the second surface is parallel to the first surface, and the second part further comprises a first side surface and a second side surface perpendicular to the first part, the first side surface and the second side surface are arranged along the second direction, and the first side surface and the second side surface are parallel.
3. The automatic anti-dazzle high beam module according to claim 2, characterized in that in the third direction, the size of the sawteeth ranges from 2 mm to 3 mm; in the second direction, the size of the sawteeth ranges from 1 mm to 2 mm; and in the second direction, the distance between the centers of adjacent sawteeth ranges from 1.5 mm to 3 mm.
4. The automatic anti-dazzle high beam module according to claim 2, characterized in that the first direction is perpendicular to the second direction, and the ratio of the size of the second surface of the sawteeth in the first direction to the size of the second surface of the sawteeth in the second direction is greater than 8.
5. The automatic anti-glare high beam module of claim 1, wherein, in the third direction, the cross-sectional view of the folded light-emitting surface is a triangle, and the included angle between the side of the folded light-emitting surface facing the arc-shaped light-emitting surface and the third direction ranges from 40 DEG to 70 DEG.
6. The automatic anti-glare high beam module of claim 1, wherein, in the third direction, the cross-sectional view of the arc-shaped light-emitting surface is a part of a circle.
7. The automatic anti-glare high beam module of claim 1, wherein, the first row of LED lamp beads comprises a first group of LED lamp beads located on the first side of a center line and a second group of LED lamp beads located on the second side of the center line, the number of LED lamp beads in the first group of LED lamp beads is greater than the number of LED lamp beads in the second group of LED lamp beads; the second row of LED lamp beads comprises a third group of LED lamp beads located on the first side of a center line and a fourth group of LED lamp beads located on the second side of the center line, the number of LED lamp beads in the third group of LED lamp beads is greater than the number of LED lamp beads in the fourth group of LED lamp beads; the center line is parallel to the third direction and passes through the focal point of the outer lens.
8. The automatic anti-glare high beam module of claim 1, wherein, The first row of LED lamp beads comprises a first group of LED lamp beads on the first side of the center line and a second group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the first group of LED lamp beads being the same as the number of LED lamp beads in the second group of LED lamp beads; The second row of LED lamp beads comprises a third group of LED lamp beads on the first side of the center line and a fourth group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the third group of LED lamp beads being the same as the number of LED lamp beads in the fourth group of LED lamp beads; The center line is parallel to the third direction and passes through the focal point of the outer lens.
9. An automobile characterized by comprising: The automobile comprises a first automatic anti-dazzling high beam module and a second automatic anti-dazzling high beam module, at least one of the first automatic anti-dazzling high beam module and the second automatic anti-dazzling high beam module being the automatic anti-dazzling high beam module of any one of claims 1-8.
10. The automobile according to claim 9, characterized by The first row of LED lamp beads comprises a first group of LED lamp beads on the first side of the center line and a second group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the first group of LED lamp beads being greater than the number of LED lamp beads in the second group of LED lamp beads; the second row of LED lamp beads comprises a third group of LED lamp beads on the first side of the center line and a fourth group of LED lamp beads on the second side of the center line, the number of LED lamp beads in the third group of LED lamp beads being greater than the number of LED lamp beads in the fourth group of LED lamp beads; the center line is parallel to the third direction and passes through the focal point of the outer lens; The second group of LED lamp beads of the first automatic anti-dazzling high beam module is located on the side of the first group of LED lamp beads thereof facing the second automatic anti-dazzling high beam module, and the fourth group of LED lamp beads of the first automatic anti-dazzling high beam module is located on the side of the third group of LED lamp beads thereof facing the second automatic anti-dazzling high beam module; The second group of LED lamp beads of the second automatic anti-dazzling high beam module is located on the side of the first group of LED lamp beads thereof facing the first automatic anti-dazzling high beam module, and the fourth group of LED lamp beads of the second automatic anti-dazzling high beam module is located on the side of the third group of LED lamp beads thereof facing the first automatic anti-dazzling high beam module.