Condenser and car lamp module

Abstract

The utility model provides a condenser and a car lamp module, and relates to the technical field of condensers, the condenser comprises a condenser body, the light-emitting surface of the condenser body is provided with a dispersion area, and a dispersion structure is arranged in the dispersion area of the light-emitting surface. According to the condenser provided by the utility model, the dispersion area is arranged on the light emitting surface of the condenser body, the light emitted from the condenser body is deflected after passing through the dispersion area, and the light of the originally bright area is partially dispersed to the surrounding area, so that the brightness of the target area is reduced on the premise of not influencing the normal use effect, and the service life of the target area is prolonged. The shape of emergent light formed by the condenser meets the standard specified by related laws and regulations, and the use effect and safety of the condenser are improved. The invention further provides a car lamp module which adopts the condenser, the super-bright risk can be reduced, the improvement cost is low, and the stability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of condensers, in particular to a condenser and a vehicle light module. Background Art

[0002] The headlights installed on motor vehicles have a high beam that provides long-distance lighting and a low beam that provides close-range lighting and prevents dazzle to pedestrians or drivers. They need to meet the mandatory requirements of national standards. The mainstream high and low beam design forms are reflectors and concentrators. At present, major OEMs have increasingly higher requirements for the brightness of the low beam of headlights, the illuminated area, and the C-NCAP (China New Car Assessment Program) score. Usually, the low beam requires at least 6 LEDs with an output luminous flux of more than 330lm to meet the needs of the OEM. While improving the performance of the low beam, it will also challenge the requirements of regulations, especially Segment 10 in the AFS (adaptive front-lighting system) regulations and the 4D-V point in the US high beam regulations, which are very easy to be over-bright.

[0003] The existing technical solution is usually to adjust the concentrator surface shape to shrink the bright spot in the vertical direction, so as to reduce the brightness value of Segment 10 and 4D-V. Or tilt the sunshade to gather more light to the area close to the cutoff line to reduce the brightness of Segment 10. By adjusting the surface shape, the brightness value of Segment 10 and 4D-V can be reduced in the preliminary optical analysis, generally around 10,000cd, but the vertical width of the light pattern will be sacrificed. The relevant regulations require a maximum value of 12,000cd for this area, with a small margin, and due to the existence of tolerances, the brightness value of this area of ​​the actual product is often higher than the design value, or even far exceeds the upper limit of the regulation, so the actual state of the product is difficult to control. The solution of tilting the sunshade is usually used in single-module low beam, and often requires the addition of a high beam module. It is difficult to apply to dual-light modules and has a high cost. Utility Model Content

[0004] The purpose of the utility model is to provide a concentrator and a vehicle light module to solve the above technical problems.

[0005] The embodiment of the utility model is achieved as follows:

[0006] A concentrator comprises: a concentrator body, a light emitting surface of the concentrator body having a dispersion area, a dispersion structure is arranged in the dispersion area of ​​the light emitting surface, light emitted through the light emitting surface of the concentrator body is used to form a light emitting light shape, the light emitting light shape has a target area, and the dispersion structure is used to deflect the light emitted through the dispersion area to the vicinity of the target area.

[0007] Furthermore, the dispersion structure includes a plurality of columnar protrusions, and the columnar protrusions are evenly spaced and arranged on the light emitting surface.

[0008] Furthermore, there is an arc transition between two adjacent columnar protrusions.

[0009] Furthermore, the dispersion area is located at the left and right center of the light emitting surface of the concentrator body.

[0010] Furthermore, the upper margin between the dispersion area and the light emitting surface of the concentrator body is h1, the lower margin between the dispersion area and the light emitting surface of the concentrator body is h2, and the ratio of h1:h2 is (0.6-0.7):(0.4-0.3).

[0011] Furthermore, the upper margin between the dispersion area and the light emitting surface of the concentrator body is h1, the lower margin between the dispersion area and the light emitting surface of the concentrator body is h2, and the ratio of h1:h2 is 0.68:0.32.

[0012] Furthermore, the protruding height of the columnar protrusion is h, and the value range of h is h>0.1mm.

[0013] Furthermore, the width of the columnar protrusion is d, and the value range of d is 0.2-1 mm.

[0014] Furthermore, the length of the dispersion area is D, and the value range of D is 1-5 mm.

[0015] Furthermore, the height of the dispersion area is H, and the value range of H is 0.1-1 mm.

[0016] The utility model also provides a vehicle lamp module, which includes a light source, a lens and any one of the above-mentioned concentrators. The light source, the concentrator and the lens are arranged in sequence along the light path. The light emitted by the light source is emitted from the concentrator and then emitted through the lens to form the light output shape of the vehicle lamp module.

[0017] The utility model provides a concentrator, which sets a dispersion area on the light-emitting surface of the concentrator body. The light emitted from the concentrator body is deflected after passing through the dispersion area, and the light from the originally brighter area is partially dispersed to the surrounding area, thereby reducing the brightness of the target area without affecting the normal use effect, making the light output shape formed by the concentrator meet the standards stipulated by relevant laws and regulations, and improving the use effect and safety of the concentrator.

[0018] The utility model also provides a vehicle lamp module, which adopts the above-mentioned concentrator to reduce the risk of over-brightness, and has low improvement cost and high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A stereogram of a condenser lens provided in an embodiment of the utility model;

[0021] Figure 2 A top view of a condenser lens provided in an embodiment of the utility model;

[0022] Figure 3 A front view of a condenser lens provided in an embodiment of the utility model;

[0023] Figure 4 A stereoscopic diagram of a concentrator provided in an embodiment of the utility model.

[0024] Icon: 100-dispersion area; 200-columnar protrusion; 300-concentrator body. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present utility model, it should be noted that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present utility model.

[0028] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] Example 1

[0030] Please refer to Figure 1 and Figure 4 As shown, a concentrator comprises: a concentrator body 300, the light emitting surface of the concentrator body 300 has a dispersion area 100, a dispersion structure is arranged in the dispersion area 100 of the light emitting surface, the light emitted through the light emitting surface of the concentrator body 300 is used to form a light emitting light shape, the light emitting light shape has a target area, and the dispersion structure is used to deflect the light emitted through the dispersion area 100 to the vicinity of the target area.

[0031] In this embodiment, the concentrator is a concentrator of equal length for automobile front lighting, and the light is emitted from the light-emitting surface of the concentrator body 300. The existing technical solution is usually to adjust the concentrator surface shape to shrink the bright spot in the vertical direction, so as to reduce the brightness value of the target area in the light shape. Or tilt the shading plate to make more light gather in the area close to the cutoff line to reduce the brightness value of the target area in the light shape, so that the produced concentrator meets the regulatory requirements. However, by adjusting the surface shape, the brightness value of the target area in the light shape can be reduced in the preliminary optical analysis, which can generally be achieved to about 10000cd, but the vertical width of the light shape will be sacrificed. The regulations require a maximum value of 12000cd for this area, and the margin is small. Due to the existence of tolerances, the brightness value of this area of ​​the actual product is often higher than the design value, and even far exceeds the upper limit of the regulations, and the actual state of the product is difficult to control. The solution of tilting the shading plate is usually used in single-module low beam, and often requires an additional high beam module. It is difficult to apply to dual-light modules and the cost is high.

[0032] This embodiment uses a structure of the light-emitting surface of the concentrator to adjust the brightness of each area of ​​the emitted light. Specifically, the light emitted from the light-emitting surface of the concentrator body 300 is used to form a light-emitting light shape, and the light-emitting light shape has a target area. It can be understood that the illumination area formed by the light emitted by the LED light source is brighter in the middle, and the brightness of the edge area gradually decreases, which will cause the central area, that is, the Segment 10 area and the 4D-V point to be super bright. In this embodiment, a dispersion structure is provided in the dispersion area 100 of the light-emitting surface of the concentrator body 300, and the dispersion structure is used to deflect the light emitted from the dispersion area 100 to the surrounding area of ​​the target area. After the emitted light passes through the light-emitting surface, the light at the center is deflected by the dispersion area 100, so that part of the light originally irradiated on the Segment 10 area or point is deflected to the surrounding area. It not only reduces the risk of super brightness in the central area, but also increases the brightness of the surrounding areas, thereby improving the lighting effect.

[0033] Please refer to Figure 1 As shown, optionally, in some implementations of this embodiment, the dispersion structure includes a plurality of columnar protrusions 200, and the columnar protrusions 200 are evenly spaced and arranged on the light emitting surface.

[0034] The dispersion structure includes a columnar protrusion 200 disposed at the center of the light-emitting surface of the concentrator body 300. The columnar protrusions 200 are evenly spaced vertically. The surface of each columnar protrusion 200 is an arc-shaped structure, and each columnar protrusion 200 forms an irregular lens structure. The light will be refracted after passing through the columnar protrusion 200. Since the surface of the columnar protrusion 200 is an arc-shaped structure, the refracted light will be deflected to different directions, so that the light originally irradiated on the Segment 10 area or the 4D-V point is deflected to the surroundings, reducing the brightness of the target area. This columnar pattern with an arch height has the most ideal effect on the deflection and dispersion of light. The light is deflected by the diffusion pattern to other positions of the light pattern.

[0035] Optionally, in some embodiments of the present embodiment, there is an arc transition between two adjacent columnar protrusions 200. The columnar protrusions 200 protrude along the light emitting surface in the direction of light irradiation, and the arc transition between the columnar protrusions 200 is concave in the opposite direction of the columnar protrusions 200, so that a wavy dispersion structure is formed between the light emitting surfaces of the dispersion structure, which has a better dispersion effect on light. The brightness of Segment 10 and 4D-V is effectively weakened without affecting the overall performance and other regulatory requirements, and the brightness of this area can be reduced by about 1700cd.

[0036] Please refer to Figure 4 As shown, in some implementations of this embodiment, the dispersion area 100 is located in the center of the light emitting surface of the concentrator body 300 .

[0037] The upper distance between the dispersion area 100 and the light emitting surface is h1, the lower distance between the dispersion area 100 and the light emitting surface of the concentrator is h2, and the ratio of h1:h2 is (0.6-0.7):(0.4-0.3).

[0038] In order to reduce the brightness of Segment 10 or 4D-V without affecting the lighting function of the spotlight, the position of the dispersed area 100 needs to be set according to the specific model of the lighting lamp. The specific method is as follows: first, through reverse tracing of the light, the light path to 4D-V is traced back according to the light pattern on the 25m screen. The light is mainly emitted through a small part in the middle of the light-emitting surface of the concentrator. Specifically, the center of this area is located in the middle of the light-emitting surface, and the distance ratio from the upper and lower boundaries is approximately (0.6-0.7): (0.4-0.3). Therefore, adding a diffusion pattern to this area can effectively make the outgoing light of the spotlight body pass through this area and hit the Segment 10 / 4D-V regulatory assessment area less.

[0039] Optionally, the bottom margin between the dispersion area 100 and the light emitting surface of the concentrator is h2, and the ratio of h1:h2 is 0.68:0.32.

[0040] Please refer to Figure 2 and Figure 3 As shown, in some implementations of this embodiment, the protruding height of the columnar protrusion 200 is h, and the value range of h is h>0.1 mm.

[0041] The higher the height of the columnar protrusion 200, the more obvious the deflection effect on the light, and the greater the reduction in the illumination brightness in the corresponding area. When the protruding height of the columnar protrusion 200 is less than 0.1mm, the columnar protrusion 200 has a poor effect on dispersing light, and the effect of reducing the brightness of the Segment 10 area or the 4D-V point is poor, and the illumination brightness of the area cannot be reduced to below the value specified by the regulations. Therefore, in order to ensure the technical effect, the height of the columnar protrusion 200 must be greater than 0.1mm.

[0042] The width of the columnar protrusion 200 is d, and the value range of d is 0.2-1 mm.

[0043] The width of the columnar protrusion 200 affects the arc-shaped protrusion height of the columnar protrusion 200 and the number of columnar protrusions 200. When the width of the columnar protrusion 200 is small, in order to ensure the overall width of the dispersion area 100, a larger number of columnar protrusions 200 need to be set, and the cost of production is high. When the protruding height of the columnar protrusion 200 is the same, the smaller the width of the columnar protrusion 200, the higher the difficulty of manufacturing and the higher the production cost. When the width of the columnar protrusion 200 is less than 0.2mm, not only the production cost is increased, but also the width of the columnar protrusion 200 is too small and the number is too large. After the light is deflected through the dispersion area 100, it is easy to form stripes with light and dark intervals, which cannot achieve the effect of reducing the brightness of the Segment 10 area or the 4D-V point. It may also affect the driver's realization and observation of obstacles due to the formed stripe pattern, leading to safety accidents. Therefore, the width range of the columnar protrusion 200 is 0.2-1mm. Since the shapes and sizes of the light emitting surfaces of different concentrator bodies 300 are different, the width of the columnar protrusion 200 can be adjusted within this range. During production, a suitable value can be selected according to the requirements.

[0044] Please refer to Figure 2 and Figure 3 As shown, optionally, in some implementations of this embodiment, the length of the dispersion area 100 is D, and the value range of D is 1-5 mm.

[0045] The width of the dispersed area 100 is positively correlated with the width of the target area of ​​the light-emitting light shape. The wider the width of the dispersed area 100, the wider the width of the target area of ​​the light-emitting light shape of the concentrator. The concentrator provided in this embodiment reduces the brightness of the target area by setting the dispersed area 100 on the light-emitting surface of the concentrator, and the size width of the target area is consistent with the width of the Segment 10 area specified in relevant laws and regulations or slightly larger than the width of the above area, so as to ensure that when the detection is performed, the light intensity in the detected Segment 10 area is less than the maximum brightness specified by the regulations. Due to the different models of the concentrator and the size of the light-emitting surface, the position and corresponding width of the dispersed area 100 need to be found according to the light reverse pursuit method. The optimal width range of the dispersed area 100 is 1-5mm. Within this range, it can be ensured that the width of the formed target area matches the assessment area specified in relevant laws and regulations, and will not affect the normal lighting effect and lighting brightness of the surrounding area too much. When the width D of the dispersed area 100 is less than 1mm, the width of the formed target area is significantly smaller than the width of the Segment 10 / 4D-V regulatory assessment area. On the contrary, when the width of the dispersion area 100 is greater than 5 mm, the width of the formed target area is too large, which may affect the lighting effect of the important area of ​​the light output shape.

[0046] Optionally, the height of the dispersion area 100 is H, and the value range of H is 0.1-1 mm.

[0047] The width and height of the dispersion area 100 determine the area and light output shape of the dispersion area 100. At the same time, the area and shape of the dispersion area 100 determine the size of the target area that needs to reduce the brightness. The height of the dispersion area 100 is the height of the columnar protrusion 200. According to the Segment 10 area size stipulated in relevant laws and regulations, the width of the dispersion area 100 is at least 1mm, and the height of the dispersion area 100 is at least 0.1mm. When the height of the dispersion area 100 is less than 0.1mm, the area of ​​the dispersion area 100 is too small, and the area of ​​the deflected light is small, resulting in the target area area of ​​the light output shape after the light is deflected being smaller than the Segment 10 area area stipulated in relevant laws and regulations, and the risk of super brightness of the Segment 10 area cannot be avoided. On the contrary, when the width of the dispersion area 100 is greater than 5mm, or the height of the dispersion area 100 is greater than 1mm, the area of ​​the dispersion area 100 is too large, and the low brightness target area formed in the end is too large, which easily leads to insufficient light within the normal concentrator lighting range, affecting the driver's observation of the object or road ahead. Therefore, the length D of the dispersion area 100 is in the range of 1-5 mm. The height of the dispersion area 100 is H, and the value range of H is 0.1-1 mm. The area of ​​the target area formed after deflection meets the target area and shape specified in relevant laws and regulations, and can avoid the risk of the target area of ​​the light shape of the concentrator being too bright, while not affecting the normal lighting effect of the concentrator.

[0048] In some implementations of the present embodiment, D=nd+(n-1)R, where n is the number of columnar pattern structures, and R is the radius of a single arc transition. The width of the dispersion area 100 and the width of a single columnar protrusion 200 determine the number of columnar protrusions 200. D and d are theoretically positively correlated. The greater the height of the columnar protrusion 200 and the protrusion height, the more obvious the light diffusion effect is, and the more the brightness of the target area is reduced; conversely, the wider the width of the columnar protrusion 200, the greater the protrusion height can be, thereby reducing production costs. During production, according to the specific needs of light intensity, the reduction in light energy in the area can be controlled by adjusting parameters such as the width, protrusion height, and spacing of the columnar protrusion 200.

[0049] In some other embodiments, the pattern structure in which the columnar protrusions 200 are arranged at intervals can be used in a concentrator-type low-beam system, is not limited by the concentrator structure, and can achieve the effect of reducing the brightness of the target area.

[0050] Example 2

[0051] This embodiment provides a vehicle lamp module, which includes a light source, a lens and any one of the concentrators in the above embodiments. The light source, the concentrator and the lens are arranged in sequence along the light path. The light emitted by the light source is emitted from the concentrator and then emitted through the lens to form the light output shape of the vehicle lamp module.

[0052] In this embodiment, the headlight module adopts the concentrator provided in the above embodiment, and the light-emitting surface of the concentrator body 300 is provided with a dispersion area 100. After the light emitted by the light source passes through the concentrator and total reflection, it passes through the light-emitting surface of the concentrator and forms a light pattern by the lens. After the light passes through the dispersion area 100, the light is deflected, so that the brightness of the low beam of the long concentrator design at the 4D-V point is effectively reduced to meet the regulatory requirements, and will not significantly affect the uniformity of the low beam. The low beam designed by this scheme can avoid the risk of super brightness during detection in a high-performance module. Since the dispersion area 100 is set on the light-emitting surface to deflect the light and reduce the brightness of the target area, the light is dispersed to the surrounding area. The dispersed light energy is low and the distribution range is wide, which will not have a significant impact on the surrounding area, and other regulatory tests and performance are little affected. The actual product status is more stable in the lighting brightness of these two regulatory areas, reducing the risk of super brightness caused by tolerance.

[0053] In summary, the utility model provides a concentrator, which includes: a concentrator body 300, the light-emitting surface of the concentrator body 300 has a dispersion area 100, a dispersion structure is arranged in the dispersion area 100 of the light-emitting surface, the light emitted through the light-emitting surface of the concentrator body 300 is used to form a light-emitting light shape, the light-emitting light shape has a target area, and the dispersion structure is used to deflect the light emitted through the dispersion area 100 to the vicinity of the target area. By setting the dispersion area 100 on the light-emitting surface of the concentrator body 300 to deflect the light, the brightness of the specific regulatory point Segment 10 and 4D-V is weakened to solve the problem of super-brightness of the regulatory point that is difficult to avoid in conventional designs. The product structure that reduces the risk of super-brightness by setting the dispersion area 100 is simple, highly applicable, and highly stable.

[0054] The utility model also provides a vehicle light module, which includes a light source, a lens, and any one of the concentrators in the above embodiments. The light source, the concentrator, and the lens are arranged in sequence along the light path. The light emitted by the light source is emitted from the concentrator and then emitted through the lens to form the light output shape of the vehicle light module. By adopting the above-mentioned concentrator that can avoid the risk of over-brightness, it is ensured that the light emitted by the vehicle light module complies with relevant legal provisions and safety standards. The above effect is achieved by improving the structure of the light-emitting surface of the concentrator body 300, with high structural stability, good use effect, low improvement and production costs, and the same structure as the traditional vehicle light module, with high applicability.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A concentrator, characterized in that: include: A concentrator body (300), wherein the light emitting surface of the concentrator body (300) has a dispersion area (100), and a dispersion structure is arranged in the dispersion area (100) of the light emitting surface, and the light emitted through the light emitting surface of the concentrator body (300) is used to form a light emitting light shape, and the light emitting light shape has a target area, and the dispersion structure is used to deflect the light emitted through the dispersion area (100) to the periphery of the target area.

2. The concentrator according to claim 1, characterized in that The dispersion structure comprises a plurality of columnar protrusions (200), and the columnar protrusions (200) are evenly spaced and arranged on the light emitting surface.

3. The concentrator according to claim 2, characterized in that There is an arc transition between two adjacent columnar protrusions (200).

4. The concentrator according to any one of claims 1 to 3, characterized in that: The dispersion area (100) is located at the left and right center of the light emitting surface of the concentrator body (300).

5. The concentrator according to claim 4, characterized in that The upper margin between the dispersion area (100) and the light-emitting surface of the concentrator body (300) is h1, the lower margin between the dispersion area (100) and the light-emitting surface of the concentrator body (300) is h2, and the ratio of h1:h2 is (0.6-0.7):(0.4-0.3).

6. The concentrator according to claim 5, characterized in that The upper margin between the dispersion area (100) and the light-emitting surface of the concentrator body (300) is h1, the lower margin between the dispersion area (100) and the light-emitting surface of the concentrator body (300) is h2, and the ratio of h1:h2 is 0.68:0.

32.

7. The concentrator according to claim 2, characterized in that The protruding height of the columnar protrusion (200) is h, and the value range of h is h>0.1 mm.

8. The concentrator according to claim 2, characterized in that The width of the columnar protrusion (200) is d, and the value range of d is 0.2-1 mm.

9. The concentrator according to claim 4, characterized in that The length of the dispersion area (100) is D, and the value range of D is 1-5 mm.

10. The concentrator according to claim 4, characterized in that The height of the dispersion area (100) is H, and the value range of H is 0.1-1 mm.

11. A vehicle light module, characterized in that: It comprises a light source, a lens and a concentrator as claimed in any one of claims 1 to 9, wherein the light source, the concentrator and the lens are arranged in sequence along the light path, and the light emitted by the light source is emitted from the concentrator and then emitted through the lens to form the light output shape of the vehicle lamp module.

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