A vehicle lamp module, vehicle lamp and vehicle

Abstract

The present application relates to a vehicle lamp, and discloses a vehicle lamp module, which comprises a light source and a high beam optical element (1) cooperating with the light source to form a high beam light pattern, wherein a divergence structure is arranged on the high beam optical element (1) or an exit light path of the high beam optical element (1), so that light rays radiated to an upper area of an exit surface (2) of the high beam optical element (1) can be diverged and radiated out through the divergence structure, thereby forming a high beam lower area light pattern below a horizontal axis of a light distribution screen. In addition, the present application also discloses a vehicle lamp and a vehicle. The present application can increase the uniformity of a vehicle front lighting area light pattern without losing light emission efficiency, avoid forming a dark area in front of the vehicle when the ADB high beam is turned on, and also will not affect the uniformity of the low beam light pattern when forming a complete high beam light pattern, thereby being beneficial to safe driving.

Description

Technical Field

[0001] This invention relates to vehicle lights, and more specifically, to a vehicle light module. Furthermore, this invention also relates to a vehicle light and a vehicle. Background Technology

[0002] With the steady increase in the number of cars on the market, traffic accidents are also rising, with nighttime driving accidents accounting for a significant portion. Therefore, improving nighttime driving safety is crucial, and enhancing the performance of car headlights is one important solution. ADB (Adaptive High Beam) systems, also known as high beam systems, currently work by pixelating the light emitted by each light source and then illuminating the road in zones, thus controlling dark areas on the road surface. Creating specific dark areas on the road effectively reduces the glare from high beams at night and lowers the accident rate. However, when ADB is activated at night, if the starting point of the high beam is too close to the front of the vehicle, dark areas on the road ahead are easily visible, severely affecting the driving experience and distracting the driver. Therefore, addressing the issue of dark areas in front of the vehicle is particularly important.

[0003] like Figure 1 and Figure 2 As shown, the ideal high beam ADB pattern a can seamlessly connect with the low beam pattern c, and its vertical angle below the H-axis (horizontal axis) is very small. This portion of the light will not illuminate the area in front of the vehicle, and the uniformity of the light pattern in the front lighting area remains unaffected. However, if the vertical angle of the high beam ADB pattern below the H-axis is large, such as... Figure 1 and Figure 2 As shown in Figure b, the high beam ADB pattern, which needs improvement, creates a dark area d in front of the vehicle, affecting the uniformity of the light pattern in the headlight area and distracting the driver, thus impacting driving safety. And for... Figure 3 If the high beam pattern a1 without ADB function has a large vertical diffusion angle of light located below the H-axis, and diffuses into the area of ​​the corresponding front lighting, it will affect the uniformity of the entire low beam pattern due to its complete high beam pattern and high high beam illuminance, thus affecting driving safety.

[0004] To address the aforementioned problems, the most effective solution is to reduce the light emitted from the lower part of the high beam. This can be achieved in two main ways: First, through structural adjustments, the light from the lower part of the high beam is reflected as far above the H-axis as possible. However, this method is difficult to implement in modules with symmetrical beam patterns, such as those using condensers, and therefore has significant limitations. The second method is to block the light from the lower part of the high beam altogether. This method is typically used in modules with condenser structures. Figure 4This is an isilluminance map of a single ADB pixel on a 25m light distribution screen, achieved using a condenser. The lower part is unprocessed. The luminous flux of this pixel is 79 lm. Figure 5 This is the isoilluminance map of a pixel whose lower light source is blocked on a 25m light distribution screen. The luminous flux of this pixel is 53lm, resulting in a loss of nearly 30% of energy. Therefore, this method leads to energy waste.

[0005] Given the aforementioned shortcomings of existing technologies, a new vehicle lighting module needs to be designed. Summary of the Invention

[0006] The technical problem to be solved by the first aspect of the present invention is to provide a vehicle lamp module that can increase the uniformity of the light pattern in the front lighting area without sacrificing light output efficiency, avoid the formation of a dark area in front of the vehicle when the ADB high beam is turned on, and not affect the uniformity of the low beam when the complete high beam light pattern is formed, thereby contributing to safe driving.

[0007] The technical problem to be solved by the second aspect of the present invention is to provide a vehicle lamp that can increase the uniformity of the light pattern in the front lighting area without sacrificing light output efficiency, avoid the formation of a dark area in front of the vehicle when the ADB high beam is turned on, and will not affect the uniformity of the low beam when forming a complete high beam pattern, thereby contributing to safe driving.

[0008] The technical problem to be solved by the third aspect of the present invention is to provide a vehicle in which the headlights can increase the uniformity of the light pattern in the front lighting area without sacrificing light output efficiency, avoid the formation of a dark area in front of the vehicle when the ADB high beam is turned on, and not affect the uniformity of the low beam when the complete high beam pattern is formed, thereby improving the driving safety of the vehicle.

[0009] To address the aforementioned technical problems, the first aspect of this invention provides a vehicle headlight module, comprising a light source and a high beam headlight optical element that cooperates with the light source to form a high beam pattern. The high beam headlight optical element or the light path of the high beam headlight optical element is provided with a diverging structure so that light rays incident on the upper region of the light-emitting surface of the high beam headlight optical element can be scattered out through the diverging structure, thereby forming a high beam lower region light pattern below the horizontal axis of the light distribution screen.

[0010] Preferably, the light-emitting surface includes an upper light-emitting surface and a lower light-emitting surface, and the upper light-emitting surface is formed as the diverging structure.

[0011] Preferably, the lower light-emitting surface is a forward-convex curved surface, and the upper light-emitting surface is a plane or a forward-convex curved surface with a curvature smaller than that of the lower light-emitting surface.

[0012] Preferably, the upper region of the light-emitting surface is provided with the diverging structure.

[0013] Preferably, the divergent structure is a patterned structure or a diffusion film.

[0014] Preferably, the high beam headlight optical element has the diverging structure provided in the output light path, and the diverging structure is a light diffuser plate.

[0015] Preferably, the headlight module further includes a lens, and a light diffuser is provided between the upper region of the light-emitting surface of the high beam headlight optical element and the lens.

[0016] Preferably, there are multiple light sources, and each light source can be independently controlled to turn on and off.

[0017] Preferably, the high beam headlight optical element includes a focusing part, a light-transmitting part, and a light-emitting part connected in sequence. The light emitted by the light source is focused by the focusing part and then transmitted to the light-emitting part through the light-transmitting part, and is emitted through the light-emitting part. The diverging structure is provided on the light-emitting part or on the light path of the light-emitting part.

[0018] Preferably, the light-concentrating part is a light-concentrating cup structure, and the outer contour surface of the light-concentrating cup structure is a curved surface whose diameter gradually increases from back to front, or the light-concentrating part is a protruding structure that protrudes backward.

[0019] A second aspect of the present invention provides a vehicle lamp, including the vehicle lamp module described in the first aspect.

[0020] A third aspect of the present invention provides a vehicle including the headlights described in the second aspect.

[0021] This invention provides a diverging structure on the high beam headlight optical element or in the light path of the high beam headlight optical element. This allows light rays incident on the upper region of the light-emitting surface of the high beam headlight optical element to be scattered by the diverging structure, resulting in a more uniform light pattern in the lower region of the high beam formed by this light. This increases the uniformity of the light pattern in the front lighting area without sacrificing light emission efficiency, preventing the formation of a dark area in front of the vehicle when the ADB high beam is on, thus improving driving safety. At the same time, it also increases the luminous flux and brightness of the low beam, and does not affect the uniformity of the low beam when forming a complete high beam pattern, thus not affecting driving safety.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] Figure 1 It is a complete schematic diagram of the ideal high beam ADB pattern and the high beam ADB pattern that needs improvement;

[0024] Figure 2These are schematic diagrams of the ideal high beam ADB pattern that forms a dark area and the high beam ADB pattern that needs improvement that forms a dark area.

[0025] Figure 3 This is a schematic diagram of the high beam pattern (without ADB function);

[0026] Figure 4 It is an isoilluminance map of an ADB single pixel on a 25m light distribution screen, achieved using a condenser with existing technology.

[0027] Figure 5 Is Figure 4 Based on the above, the isoilluminance map of an ADB single pixel on a 25m light distribution screen with the lower light source blocked;

[0028] Figure 6 This is a schematic diagram of one embodiment of the present invention;

[0029] Figure 7 yes Figure 6 Top view;

[0030] Figure 8 yes Figure 7 AA cross-section view;

[0031] Figure 9 This is an isoilluminance diagram on a 25m light distribution screen according to one embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of another embodiment of the present invention;

[0033] Figure 11 yes Figure 10 An enlarged schematic diagram of the pattern structure on the light-emitting surface of the optical element of a mid-to-high-end vehicle headlight;

[0034] Figure 12 This is a schematic diagram of another embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures

[0036] 1. High beam headlight optical components; 11. Concentrating section

[0037] 12 light part 13 light output part

[0038] 2 Light-emitting surface 21 Upper light-emitting surface

[0039] 22 Lower light-emitting surface 3 lenses

[0040] 4. Patterned structure; 5. Light diffusion plate

[0041] a. Ideal high beam ADB pattern; a1. High beam pattern without ADB function

[0042] b. High beam ADB pattern needs improvement; c. Low beam pattern

[0043] Dark area in front of car D Detailed Implementation

[0044] In the description of this invention, it should be understood that the terms "upper," "lower," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Among them, "front" refers to the direction of light emission, and "rear" is the direction opposite to "front."

[0045] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0046] The first aspect of this invention provides a vehicle headlight module, including a light source and a high beam headlight optical element 1 that cooperates with the light source to form a high beam pattern. A diverging structure is provided on the high beam headlight optical element 1 or on its output light path, so that light rays incident on the upper region of the light-emitting surface 2 of the high beam headlight optical element 1 can be scattered by the diverging structure, thereby forming a lower high beam pattern below the horizontal axis of a light distribution screen. Specifically, the upper region of the light-emitting surface 2 is configured such that the light rays emitted from it can form the lower high beam pattern, and the area where this portion of light is projected onto the light distribution screen is the region of the high beam pattern below the horizontal axis of the light distribution screen. Correspondingly, the lower region of the light-emitting surface 2 is configured such that the light rays emitted from it can form the upper high beam pattern, and the area where this portion of light is projected onto the light distribution screen is the region of the high beam pattern above the horizontal axis of the light distribution screen. The lower and upper high beam patterns are superimposed to form a complete high beam pattern.

[0047] This invention provides a diverging structure on the high beam headlight optical element 1 or in the light path of the high beam headlight optical element 1. This allows light rays incident on the upper region of the light-emitting surface 2 of the high beam headlight optical element 1 to be scattered by the diverging structure. The light rays emitted from the upper region of the light-emitting surface 2 of the high beam headlight optical element 1 form a lower region of the high beam light pattern. This light pattern is projected onto the light distribution screen in the area below the horizontal axis of the light distribution screen, thus making this light pattern more uniform. When the headlight module needs to implement ADB (Adaptive Diffuse Beam) functionality through multiple pixels, the divergence of light in the lower region of the high beam allows adjacent lit pixels to be illuminated more evenly. The light from the lower part of the headlight module can supplement the dark area in front of the vehicle, thereby increasing the uniformity of the light pattern in the front lighting area and preventing the formation of a dark area in front of the vehicle when ADB high beam is activated. This is beneficial to safe driving. Compared with solving the problem of dark areas in front of the vehicle by blocking the light from the lower part of the high beam, the light output efficiency of this invention is not lost. At the same time, it can also increase the luminous flux and brightness of the low beam, making it even more beneficial to safe driving. When the headlight module does not need to implement the ADB function, that is, when forming a complete high beam pattern, the light in the lower part of the high beam is diffused, so the light pattern in the lower part of the high beam is not very bright, which does not affect the uniformity of the low beam pattern and thus does not affect driving safety. This invention is particularly suitable for modules with symmetrical light patterns, and of course, it is also applicable to modules with asymmetrical light patterns.

[0048] As one specific implementation method, such as Figures 6 to 8 As shown, the light-emitting surface 2 of the high-beam headlight optical element 1 includes an upper light-emitting surface 21 and a lower light-emitting surface 22. The upper light-emitting surface 21 is formed as the diverging structure, located in the upper region of the light-emitting surface 2, and the lower light-emitting surface 22 is located in the lower region of the light-emitting surface 2. More specifically, the lower light-emitting surface 22 is a forward-convex curved surface, and the upper light-emitting surface 21 is a plane or a forward-convex curved surface with a curvature smaller than that of the lower light-emitting surface 22. By setting the upper region of the light-emitting surface 2 as a plane or a curved surface with a curvature smaller than that of its lower region, the light emitted from the upper light-emitting surface 21 diverges, thereby causing the light pattern of the lower region of the high beam formed by this portion of light to be diffused. The specific light pattern projected onto the light distribution screen is as follows: Figure 9 As shown in the figure, the horizontal 0-degree line is the horizontal axis. It can be seen from the figure that the light pattern below the horizontal axis of the light distribution screen is asymmetrical with the light pattern above the horizontal axis of the light distribution screen. The light pattern below the horizontal axis of the light distribution screen diffuses to both sides and is distributed in a divergent manner, which can increase the uniformity of the light pattern in the front lighting area of ​​the vehicle.

[0049] As another specific implementation method, such as Figure 10 and Figure 11As shown, the upper region of the light-emitting surface 2 is provided with the diverging structure. By providing the diverging structure in the upper region of the light-emitting surface 2, the light in the lower region of the high beam can also be diffused, thereby increasing the uniformity of the light pattern in the headlight area. Preferably, the diverging structure is a pattern structure 4, such as a raindrop structure, stripe structure, leather texture structure, or mesh pattern structure, or the diverging structure is a diffusion film attached to the upper region of the light-emitting surface 2. Of course, the diverging structure can also be other structures, as long as such a structure can diffuse the light, it also falls within the protection scope of this invention.

[0050] As another specific implementation method, such as Figure 12 As shown, the high beam headlight optical element 1 has a diverging structure in its output light path, which is a light diffuser plate 5. More specifically, the headlight module also includes a lens 3, and the light diffuser plate 5 is provided between the upper region of the light-emitting surface 2 of the high beam headlight optical element 1 and the lens 3. This allows the light emitted from the upper region of the light-emitting surface 2 to be diffused by the light diffuser plate 5 and then directed to the lens 3, forming a divergent high beam light pattern in the lower region, thereby increasing the uniformity of the light pattern in the front lighting area. The light diffuser plate 5 is a molded part made of a light-scattering material.

[0051] In the above embodiments, when the headlight module needs to implement the ADB function, the light source can be set to multiple, and each light source can be independently controlled to turn on and off. In practical applications, by controlling the on and off of each light source, the brightness and darkness of the corresponding light spot can be achieved, thereby flexibly realizing the multi-pixel ADB high beam function.

[0052] Based on the above embodiments, as a specific structure of the high beam headlight optical element 1, such as... Figures 6 to 8 , Figure 10 and Figure 12As shown, the high beam headlight optical element 1 includes a focusing section 11, a light-transmitting section 12, and a light-emitting section 13 connected in sequence. The light emitted by the light source is focused by the focusing section 11, then transmitted through the light-transmitting section 12 to the light-emitting section 13, and finally emitted through the light-emitting section 13. The light-emitting section 13 or the light path of the light-emitting section 13 is provided with the diverging structure. Preferably, the focusing section 11, the light-transmitting section 12, and the light-emitting section 13 are integrally formed, which makes the high beam headlight optical element 1 highly integrated, reduces the number of installation parts, ensures the relative positional accuracy of the three, ensures the stability of the light shape, and facilitates processing and forming. The light-emitting surface 2 of the light-emitting part 13 is the light-emitting surface 2 of the aforementioned high beam headlight optical element 1. The light-emitting surface 2 can be a lens light-emitting surface, integrating the primary and secondary optical elements into one unit. This eliminates the need for secondary optical elements such as lenses 3 in the headlight module, resulting in a high degree of integration, reducing the number of components, and decreasing the size of the high beam headlight optical element 1. This meets the requirements for headlight miniaturization and requires only one installation, avoiding secondary installation errors and ensuring the relative positional accuracy of both components, thus better ensuring the stability of the lighting beam. Of course, the high beam headlight optical element 1 can also be other structures that can cooperate with the light source to form a high beam pattern, such as a condenser structure.

[0053] In this embodiment, the light-concentrating part 11 can take various forms. For example, the light-concentrating part 11 can be a solid light-concentrating cup structure, whose outer contour surface is a curved surface with a diameter that gradually increases from back to front, and whose light-incident surface can be a plane or a curved surface; or it can be... Figure 8 The light-concentrating cup structure shown has an outer contour surface that is a curved surface with a gradually increasing diameter from back to front. Its light-incident end has a cavity with a rearward opening, and the cavity contains a rearward-protruding protrusion. The light-concentrating part 11 can also be a rearward-protruding protrusion structure. There can be multiple light-concentrating parts 11, which can be arranged in one row or in multiple rows.

[0054] A second aspect of the present invention provides a vehicle lamp, including the vehicle lamp module described in the first aspect.

[0055] By setting the headlight module, the light pattern of the lower area of ​​the high beam formed by the headlight is more uniform. It can increase the uniformity of the light pattern in the front lighting area without sacrificing light output efficiency, and avoid the formation of a dark area in front of the vehicle when the ADB high beam is turned on, which is beneficial to safe driving. Furthermore, it will not affect the uniformity of the low beam when forming a complete high beam pattern, thus not affecting driving safety.

[0056] A third aspect of the present invention provides a vehicle including the headlights described in the second aspect.

[0057] By setting the headlights, the uniformity of the light pattern in the front lighting area can be increased without sacrificing light output efficiency, avoiding the formation of a dark area in front of the vehicle when the ADB high beam is turned on, thereby improving the vehicle's driving safety. Furthermore, the uniformity of the low beam pattern will not be affected when the complete high beam pattern is formed, thus making the vehicle's driving safety even higher.

[0058] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0060] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A vehicle lamp module, characterized in that, The high beam optical element (1) is provided with a diverging structure, so that the light rays reaching the upper region of the light exit surface (2) of the high beam optical element (1) can be diverged and emitted through the diverging structure, thereby forming a high beam lower region light pattern below the horizontal axis of the light distribution screen. The light exit surface (2) comprises an upper light exit surface (21) and a lower light exit surface (22), the upper light exit surface (21) is formed as the diverging structure, and the lower light exit surface (22) is a forwardly convex curved surface; the upper light exit surface (21) is a flat surface or a forwardly convex curved surface with a curvature smaller than that of the lower light exit surface (22); and the shortest distance between the upper light exit surface (21) and the lens (3) is greater than the shortest distance between the lower light exit surface (22) and the lens (3) in the front-rear direction.

2. The vehicle lamp module of claim 1, wherein, The light source is a plurality of light sources, and each light source can be independently controlled to turn on or off.

3. The vehicle lamp module of claim 1, wherein, The high beam optical element (1) comprises a light collecting portion (11), a light passing portion (12) and a light emitting portion (13) connected in sequence, the light rays emitted by the light source are converged through the light collecting portion (11), then pass through the light passing portion (12) and reach the light emitting portion (13), and are emitted through the light emitting portion (13); and the light emitting portion (13) is provided with the diverging structure.

4. The vehicle lamp module of claim 3, wherein, The light collecting portion (11) is a light collecting cup structure, and the outer profile surface of the light collecting cup structure is a curved surface with a gradually increasing aperture from back to front, or the light collecting portion (11) is a rearwardly convex protruding structure.

5. A vehicle lamp characterized by The vehicle lamp module comprises the vehicle lamp module according to any one of claims 1 to 4.

6. A vehicle characterized by comprising: The vehicle lamp comprises the vehicle lamp according to claim 5.

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