Vehicle lamp lighting system

Abstract

The utility model discloses a car lamp lighting system which comprises a heat dissipation substrate, a low-beam light source arranged on the heat dissipation substrate, a light emitting lens used for emitting light and a light cutting sheet used for forming a low-beam light pattern. The low-beam light source comprises a low-beam light-emitting body and a light receiving structure used for collecting light emitted by the low-beam light-emitting body and guiding the light to the light-emitting lens, the light receiving structure comprises a first reflection part and a second reflection part, and the second reflection part is located on one side of a light-emitting opening of the light receiving structure. The first reflecting part and the second reflecting part are respectively provided with a first focus and a second focus, and the low-beam luminous body is simultaneously positioned on the first focuses of the first reflecting part and the second reflecting part; part of the light, collected by the second reflection part, of the low-beam light-emitting body is reflected by the reflection structure and then is emitted to the light-emitting lens, the utilization rate of the light-emitting body of the vehicle lamp illumination system is high, the brightness is high, and the illumination effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lighting, and more specifically, to a vehicle lamp lighting system. Background Art

[0002] At present, the low beam light sources of automobile lamps on the market basically adopt the reflective cup method to collect and reflect light. The low beam light source is located above the heat dissipation substrate, and the high beam light source is located below the heat dissipation substrate. The switching between high and low beams is achieved by changing the light cutting device, wherein the low beam light source is an LED light-emitting body, and the reflective cup is an ellipsoidal cup structure. The LED light-emitting body is located at the first focus of the ellipsoidal cup structure. The light emitted by the LED light-emitting body is close to the Lambertian distribution. After being reflected by the reflective cup, it converges near the second focus of the reflective cup. The light cutting piece of the light cutting device is set near the second focus, which can block part of the light to form a light-dark boundary, and then imaged to the road surface through the light-emitting lens, forming a low beam light type with a clear cut-off line.

[0003] However, the reflective cup of this headlight structure is not efficient enough in collecting light from the LED light emitter, and about 20% of the light is not effectively collected, especially in the low beam mode, the lighting effect of the headlight is not good enough. Utility Model Content

[0004] The utility model aims to overcome at least one defect of the above-mentioned prior art and provide a vehicle lamp lighting system, wherein the utilization rate of the light emitter of the vehicle lamp lighting system is high, the brightness of the vehicle lamp is high, and the lighting effect is good.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A vehicle lamp lighting system comprises: a heat dissipation substrate, a low-beam light source arranged on the heat dissipation substrate, a light-emitting lens for emitting light, and a light-cutting piece for forming a low-beam light pattern, wherein the low-beam light source comprises a low-beam light emitter and a light-collecting structure for collecting light emitted by the low-beam light emitter and guiding it to the light-emitting lens, wherein the light-collecting structure comprises a first reflecting portion and a second reflecting portion, and the second reflecting portion is located on one side of a light outlet of the light-collecting structure, the first reflecting portion and the second reflecting portion both have a first focus and a second focus, the low-beam light emitter is simultaneously located on the first focus of the first reflecting portion and the second reflecting portion, and the vehicle lamp lighting system further comprises a reflecting structure, and part of the light of the low-beam light emitter collected by the second reflecting portion is reflected by the reflecting structure and then emitted to the light-emitting lens.

[0007] In one embodiment, the reflective structure is a reflective mirror or a coated reflective surface.

[0008] In one embodiment, the second focus of the second reflective portion and the focus of the light output lens are substantially symmetrically arranged along the reflective structure.

[0009] In one embodiment, the reflector or the reflective surface forms an angle of 30° to 60° with the mounting surface of the low-beam light emitter.

[0010] In one embodiment, the light collecting structure further includes a plurality of curved surfaces and / or flat surfaces for seamlessly connecting the first reflecting portion and the second reflecting portion.

[0011] In one embodiment, the light collecting structure also includes a first curved surface, a second curved surface and a third curved surface. The first curved surface is located at an upper middle position close to the first reflecting portion, and the second curved surface and the third curved surface are located at an upper position close to the first reflecting portion and are located on both sides of the second reflecting portion and are symmetrically arranged along the second reflecting portion.

[0012] In one embodiment, the first reflective portion, the second reflective portion, the first curved surface, the second curved surface and the third curved surface are an integrated structure.

[0013] In one embodiment, the ratio of the area of ​​the first reflective portion to the area of ​​the second reflective portion is (3-5):1.

[0014] In one embodiment, the vehicle lamp lighting system further includes a high-beam light source, and the light emitting lens includes a high-beam light emitting lens portion for emitting light from the high-beam light source and a low-beam lens portion for emitting light from the low-beam light source.

[0015] In one embodiment, the high-beam light source is arranged above the low-beam light source, and the high-beam light source is an LED module and / or a laser module.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the light collecting structure of the low beam light source described in the utility model includes a first reflecting part and a second reflecting part, and a reflecting structure is provided for reflecting the light collected by the second reflecting part, and the low beam light source is located at the first focus of the first reflecting part, then the first reflecting part can collect most of the light emitted by the low beam light source, and the low beam light source is also located at the first focus of the second reflecting part, and the second reflecting part is located on the light outlet side of the light collecting structure, and part of the light of the low beam light source collected by the second reflecting part is reflected by the reflecting structure and then emitted to the light emitting lens, then the second reflecting part can further collect the light that the first reflecting part cannot collect and emit the light through the light emitting lens through the reflecting structure, thereby improving the utilization rate of the low beam light source, the low beam light intensity can be significantly increased, the low beam lighting brightness can be significantly improved, and the high beam lighting effect can also be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a structural schematic diagram of a vehicle lamp lighting system in the prior art.

[0018] Figure 2 It is a schematic diagram of the structure of the vehicle lamp lighting system of Example 1 and a schematic diagram of light emission from the second reflecting part.

[0019] Figure 3 It is a structural schematic diagram of the light collecting structure.

[0020] Figure 4 This is a structural schematic diagram of the light collection structure from another perspective.

[0021] Figure 5 This is a simulation diagram of the optical effect of the vehicle lighting system of Example 1 in the low beam mode.

[0022] Figure 6 Schematic diagram of the structure of a headlight lighting system with a common reflector cup structure

[0023] Figure 7 for Figure 6 The optical effect simulation diagram of the vehicle lighting system in low beam mode is shown.

[0024] Figure 8 This is a simulation diagram of the optical effect of the vehicle lighting system of Example 1 when the light cutter is moved out of the light path.

[0025] Fig. 9 for Figure 6 The optical effect simulation diagram of the vehicle lighting system shown is when the light cutter is moved out of the light path.

[0026] Fig.10 It is a structural schematic diagram of the vehicle lighting system of Example 2.

[0027] Explanation of the reference numerals in the accompanying drawings: 10, heat dissipation substrate; 20, low-beam light source; 21, low-beam light emitter; 22, light collecting structure; 221, first reflecting portion; 222, second reflecting portion; 223, first curved surface; 224, second curved surface; 225, third curved surface; 30, high-beam light source; 40, light output lens; 41, low-beam light output lens portion; 42, high-beam light output lens portion; 50, light cutting piece; 60, reflecting structure. DETAILED DESCRIPTION

[0028] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] like Figure 1As shown in FIG. 1 , most of the existing vehicle lighting systems on the market include: a heat dissipation substrate 10, a low beam light source 20 disposed above the heat dissipation substrate 10, a high beam light source 30 disposed below the heat dissipation substrate 10, a light output lens 40, and a light cutter 50, wherein the low beam light source 20 and the high beam light source 30 are both in the form of LED luminous bodies and reflective cups, and the reflective cups are all ellipsoidal cup structures. However, the reflective cup of the low beam light source of this lighting system can only collect about 80% of the LED luminous body, and about 20% of the light is wasted (such as Figure 1 The elliptical area in the middle shows the brightness of the low beam, which results in the low beam being not bright enough. Based on this, the present embodiment provides a new technical solution.

[0030] Example 1

[0031] like Figure 2 As shown, this embodiment 1 provides a vehicle lamp lighting system, including: a heat dissipation substrate 10, a low beam light source 20 arranged on the heat dissipation substrate 10, a light output lens 40 for emitting light, and a light cutting piece 50 for forming a low beam light pattern, the low beam light source 20 includes a low beam light emitter 21 and a light collecting structure 22 for collecting the light emitted by the low beam light emitter 21 and guiding it to the light output lens 40, the light receiving structure 22 includes a first reflecting portion 221 and a second reflecting portion 222, and the second reflecting portion 222 is located on one side of the light outlet of the light receiving structure 22, the first reflecting portion 221 and the second reflecting portion 222 both have a first focus and a second focus, the low beam light emitter 21 is simultaneously located on the first focus of the first reflecting portion 221 and the second reflecting portion 222, the vehicle lamp lighting system also includes a reflecting structure 60, and part of the light of the low beam light emitter 21 collected by the second reflecting portion 222 is reflected by the reflecting structure 60 and then emitted to the light output lens 40.

[0032] The light collecting structure 22 of the low beam light source 20 described in this embodiment includes a first reflecting portion 221 and a second reflecting portion 222, and a reflecting structure 60 is provided for reflecting the light collected by the second reflecting portion 222. The low beam light emitter 21 is located at the first focus of the first reflecting portion 221, and the first reflecting portion 221 can collect most of the light emitted by the low beam light emitter 21. The low beam light emitter 21 is also located at the first focus of the second reflecting portion 222, and the second reflecting portion 222 is located on the light outlet side of the light collecting structure 22. Part of the light of the low beam light emitter collected by the second reflecting portion 222 is reflected by the reflecting structure 60 and then emitted to the light emitting lens 40. The second reflecting portion 222 can further collect the light that the first reflecting portion 221 cannot collect and emit the light through the light emitting lens 40 through the reflecting structure 60, thereby improving the utilization rate of the low beam light emitter 21, and the light intensity of the low beam lighting of the vehicle lighting system can be significantly improved, thereby significantly improving the brightness.

[0033] In this embodiment, the first reflecting portion 221 and the second reflecting portion 222 both have a first focus and a second focus, indicating that the first reflecting portion 221 and the second reflecting portion 222 are both curved structures with ellipsoidal surfaces. Further, the light cutter 50 can be used to form a low beam light pattern, indicating that the light cutter 50 is located near the second focus of the first reflecting portion 221.

[0034] Furthermore, in this embodiment, the reflective structure 60 is a reflector, for example, it can be mirror aluminum. In other embodiments, the reflective structure can also be a coated reflective surface or other structure with mirror reflection function, as long as it can achieve efficient reflection of light.

[0035] Furthermore, in this embodiment, the second focus of the second reflective portion 222 and the focus of the light output lens 40 are substantially symmetrically arranged along the reflective structure 60. Figure 2 As shown, the second focus of the second reflective portion 222 is point A. When the focus and the focus of the light-emitting lens 40 are arranged roughly symmetrically along the reflective structure 60, the light that should originally converge to point A converges to the vicinity of the focus of the light-emitting lens 40 under the reflection effect of the reflective structure 60, so that it can be emitted through the light-emitting lens 40 to form spotlight illumination, thereby enhancing the light intensity at the center of the light spot. The "similar arrangement along the structure 60" mentioned in the present application means that the distance between the focus A of the second reflective portion 222 after the mirror effect of the reflective structure and the focus of the light-emitting lens 40 is less than 5 mm.

[0036] Furthermore, the reflector or the reflective surface forms an angle of 30° to 60° with the mounting surface of the low-beam light emitter.

[0037] Furthermore, the light collecting structure 22 also includes a plurality of curved surfaces and / or planes for seamlessly connecting the first reflecting portion 221 and the second reflecting portion 222. More specifically, the light collecting structure also includes a first curved surface 223, a second curved surface 224 and a third curved surface 225. The first curved surface 223 is located at an upper middle position close to the first reflecting portion 221, and the second curved surface 224 and the third curved surface 225 are located at an upper position close to the first reflecting portion 221 and at both sides of the second reflecting portion 222 and are symmetrically arranged along the second reflecting portion 222. The design of the first curved surface 223, the second curved surface 224 and the third curved surface 225 can make the first reflecting portion 211 and the second reflecting portion 222 connected as smoothly as possible, and the shape is more beautiful on the basis of ensuring the structural property.

[0038] Furthermore, the first reflective portion 221, the second reflective portion 222, the first curved surface 223, the second curved surface 224 and the third curved surface 225 are an integrated structure. The integrated structure has high design precision and can simplify the installation process.

[0039] The ratio of the area of ​​the first reflective portion to the area of ​​the second reflective portion is (3-5): 1. With such a design, the collection efficiency of the light collecting structure 22 for the low-beam light emitter 21 can be maximized.

[0040] More specifically, this embodiment performs optical simulation on the vehicle lighting system, and the specific setting parameters are as follows: the light-emitting surface of the low-beam LED light emitter 21 is 5.1*3.1mm, and the luminous flux is about 5000lm; the curved surface reflectivity of the light-collecting structure 22 is 0.86, and the transmittance of the light-emitting lens 40 is 0.94. In the low-beam mode (when the light cutter 50 partially blocks the light), the simulated optical effect diagram is as follows: Figure 5 When the light collecting structure is a standard reflector structure, the vehicle lighting system (such as Figure 6 The optical effect simulation diagram in low beam mode is shown as follows Figure 7 As shown. Figure 5 and Figure 7 It can be seen that under the same parameter conditions, when a conventional reflector is used, the light intensity of the low beam is 84000cd, while the light intensity of the vehicle lamp lighting system described in this embodiment 1 is 150000cd, which is about 78.6% higher. It can be seen that the light collection structure described in this application can significantly improve the collection efficiency of the low beam LED body 21 and the intensity of the lighting light, and the vehicle lamp lighting system has a good lighting effect and high brightness.

[0041] When the light cutter 50 is moved out of the light path, the vehicle lighting system (such as Figure 6 The optical simulation diagram is shown in Fig. 9 As shown, the light intensity is about 84200cd, and the optical simulation diagram of the vehicle lighting system described in Example 2 is as follows Figure 8 As shown, the light intensity is 152000 cd; it can be seen that when the light cutter 50 is moved out of the light path, the light intensity of the vehicle lamp lighting system described in this embodiment 1 can also be increased by about 80.5%.

[0042] The vehicle lamp lighting system described in this embodiment can be applied to vehicle headlights or fog lamps.

[0043] Furthermore, the vehicle lighting system also includes a cooling fan (not shown in the figure).

[0044] Example 2

[0045] like Fig.10As shown, the present embodiment discloses a vehicle lamp lighting system, comprising: a heat dissipation substrate 10, a low-beam light source 20 disposed on the heat dissipation substrate 10, a light-emitting lens 40 for emitting light, and a light-cutting piece 50 for forming a low-beam light pattern, wherein the low-beam light source 20 comprises a low-beam light emitter 21 and a light-collecting structure 22 for collecting light emitted by the low-beam light emitter and guiding it to the light-emitting lens 40, wherein the light-collecting structure comprises a first reflecting portion 221 and a second reflecting portion 222, and the second reflecting portion 222 is located at one side of a light outlet of the light-collecting structure 22, and the first reflecting portion 221 and the second reflecting portion 222 are arranged on the light outlet side of the light-collecting structure 22. The first reflecting part 221 and the second reflecting part 222 both have a first focus and a second focus, the low-beam light emitter 21 is located at the first focus of the first reflecting part 221 and the second reflecting part 222 at the same time, the vehicle lamp lighting system further comprises a reflecting structure 60, part of the light of the low-beam light emitter 21 collected by the second reflecting part 222 is reflected by the reflecting structure 60 and then emitted to the light emitting lens 40; the vehicle lamp lighting system further comprises a high-beam light source 30, the light emitting lens 40 comprises a high-beam light emitting lens part 42 for emitting the light of the high-beam light source 30 and a low-beam lens part 41 for emitting the light of the low-beam light source 20. The high-beam light source may be an LED module or a laser module.

[0046] The high beam light source 30 is arranged above the low beam light source 20. The high beam light source 30 is an LED module and / or a laser module. The LED module and the laser module can be conventional structures on the market and will not be described in detail here. In this embodiment 2, the high beam light source 30 is taken as an example of a laser module. In other embodiments, the high beam light source can also be 2 laser modules, or 2 LED modules, or 1 laser module and 1 LED module. In other embodiments, the high beam light source can also be 3 LED modules, or 3 laser modules, or 2 LED modules and 1 laser module, or 2 laser modules and 1 LED module. That is, the number of high beam light sources 30 can be adaptively designed according to actual needs.

[0047] The vehicle lamp lighting system described in the second embodiment is different from the first embodiment in that: 1) a high-beam light source 30 is added; 2) the light emitting lens 40 includes a high-beam light emitting lens portion 42 for emitting light from the high-beam light source 30 and a low-beam lens portion 41 for emitting light from the low-beam light source 20, while the light emitting lens of the first embodiment is a standard lens. The vehicle lamp lighting system described in the second embodiment can further enhance the high-beam lighting effect compared with the first embodiment.

[0048] The other structures and functions of the second embodiment are the same as those of the first embodiment and will not be described again here.

[0049] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A vehicle lighting system, comprising: A heat dissipation substrate, a low-beam light source arranged on the heat dissipation substrate, a light-emitting lens for emitting light, and a light-cutting piece for forming a low-beam light pattern, wherein the low-beam light source includes a low-beam light emitter and a light-collecting structure for collecting light emitted by the low-beam light emitter and guiding it to the light-emitting lens, and wherein the light-collecting structure includes a first reflecting portion and a second reflecting portion, and the second reflecting portion is located on one side of a light outlet of the light-collecting structure, the first reflecting portion and the second reflecting portion both have a first focus and a second focus, the low-beam light emitter is simultaneously located on the first focus of the first reflecting portion and the second reflecting portion, and the vehicle lamp lighting system further includes a reflecting structure, and part of the light of the low-beam light emitter collected by the second reflecting portion is reflected by the reflecting structure and then emitted to the light-emitting lens.

2. The vehicle lighting system according to claim 1, characterized in that: The reflective structure is a reflective mirror or a coated reflective surface.

3. The vehicle lighting system according to claim 2, characterized in that: The second focus of the second reflecting portion and the focus of the light output lens are substantially symmetrically arranged along the reflecting structure.

4. The vehicle lighting system according to claim 2, characterized in that: The reflector or the reflective surface forms an angle of 30° to 60° with the mounting surface of the low-beam light emitter.

5. The vehicle lighting system according to claim 1, characterized in that: The light collecting structure further includes a plurality of curved surfaces and / or flat surfaces for seamlessly connecting the first reflecting portion and the second reflecting portion.

6. The vehicle lighting system according to claim 5, characterized in that: The light collecting structure also includes a first curved surface, a second curved surface and a third curved surface. The first curved surface is located at an upper middle position close to the first reflecting part, and the second curved surface and the third curved surface are located at an upper position close to the first reflecting part and on both sides of the second reflecting part and are symmetrically arranged along the second reflecting part.

7. The vehicle lighting system according to claim 6, characterized in that: The first reflecting portion, the second reflecting portion, the first curved surface, the second curved surface and the third curved surface are an integrated structure.

8. The vehicle lighting system according to any one of claims 1 to 7, characterized in that: The ratio of the area of ​​the first reflecting portion to the area of ​​the second reflecting portion is (3-5):

1.

9. The vehicle lighting system according to any one of claims 1 to 7, characterized in that: The vehicle lamp lighting system further comprises a high-beam light source, and the light emitting lens comprises a high-beam lens portion for emitting light of the high-beam light source and a low-beam lens portion for emitting light of the low-beam light source.

10. The vehicle lighting system according to claim 9, characterized in that: The high-beam light source is arranged above the low-beam light source, and the high-beam light source is an LED module and / or a laser module.

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