Vehicle light assembly for a vehicle and vehicle

Abstract

The utility model discloses a kind of vehicle lamp assemblies and vehicles for vehicle, it is related to vehicle parts field.Vehicle lamp assembly includes light source and light-expanding reflector, the light-expanding reflector is formed with the passage through in the light direction of the light source, the inner surface of the passage is formed with reflecting layer, the reflecting layer is suitable for the light of the light source is reflected towards light direction;Wherein the passage has first wall surface and second wall surface in first direction each other directly opposite, the first wall surface and the second wall surface tend to parallel in the direction away from the light source;The passage has third wall surface and fourth wall surface in second direction each other directly opposite, the third wall surface and the fourth wall surface tend to deviate from each other in the direction away from the light source Inclined. According to the vehicle lamp assembly of the utility model, it can reduce component quantity and cost, improve light utilization, and realize low beam expansion to expand illumination range.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts, and in particular to a vehicle lighting assembly and a vehicle. Background Technology

[0002] The performance requirements for low beam headlights are becoming increasingly diverse and demanding. On the one hand, to adapt to different road conditions and driving scenarios, higher requirements are being placed on the illumination width of low beam headlights. On the other hand, optimizing the cost of vehicle headlights has a significant impact on overall vehicle cost control. Therefore, achieving efficient luminous efficacy to reduce costs while meeting the performance requirements of low beam headlights has become the core demand for the development of automotive lighting technology.

[0003] In related technologies, low beam broadening is mainly achieved based on optical principles. This involves forming a wider light spot at the focal point of an outer lens and then blocking this spot with a specific shape at the focal point, thus creating a broadened low beam pattern with a cutoff line. However, to form a clear and accurate cutoff line, additional structural components specifically designed to generate it are required. This not only increases the design complexity of the headlights and makes the manufacturing process more cumbersome, but also increases costs due to the introduction of additional components. Secondly, the operation of blocking the light spot inevitably results in the loss of some light pattern. The blocked light cannot participate in the effective illumination process, leading to reduced luminous efficiency and energy waste. Utility Model Content

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a vehicle headlight assembly. According to this invention, the headlight assembly can reduce the number of components and cost, improve light utilization, and achieve low beam widening to expand the illumination range.

[0005] The vehicle lighting assembly according to this utility model includes: a light source; a light-expanding reflector, the light-expanding reflector forming a channel extending through the light-emitting direction of the light source, the inner surface of the channel forming a reflective layer adapted to reflect the light from the light source toward the light-emitting direction; wherein the channel has a first wall and a second wall facing each other in a first direction, the first wall and the second wall tending to be parallel in a direction away from the light source; the channel has a third wall and a fourth wall facing each other in a second direction, the third wall and the fourth wall tending to be inclined away from each other in a direction away from the light source.

[0006] According to the vehicle headlight assembly of this utility model, the reflective layer on the inner surface of the light-expanding reflector channel causes the light emitted by the light source to propagate in the light-emitting direction. The first and second walls, which tend to be parallel in the first direction of the channel, ensure uniform reflection and diffusion of the light during propagation, enabling stable propagation and generating a light spot with a certain width at the focal line of the outer lens. There is no need to block the light spot to form a cutoff line, reducing components and costs and improving light utilization. The third and fourth walls, which tend to be inclined away from the light source in the second direction of the channel, cause the light to be reflected and diffused, and the diffusion is enhanced as it moves away from the light source, making the illumination range of the vehicle headlight wider in the second direction and achieving the effect of widening the low beam.

[0007] According to some embodiments of the present invention, the first wall surface and the second wall surface are spaced apart in the height direction, and the first wall surface and the second wall surface gradually move closer to each other on the side near the light source.

[0008] According to some embodiments of the present invention, the first wall surface and the second wall surface are constructed as freeform surfaces.

[0009] According to some embodiments of the present invention, a protruding region is formed at the center of the light-amplifying reflector, and the protruding region protrudes beyond the outer periphery of the light-amplifying reflector.

[0010] According to some embodiments of the present invention, the outer edges of the first wall and the second wall are inclined toward the light source in a direction close to both sides.

[0011] According to some embodiments of the present invention, the vehicle headlight assembly further includes: an outer lens, the outer lens being constructed as an arc shape protruding from the side opposite to the direction of the light source, and the outer lens being disposed on the light-emitting side of the light-expanding reflector.

[0012] According to some embodiments of this utility model, the angle between the two edges of the outer lens and the center of the circle in the width direction is α, and the angle between the third wall and the fourth wall is β, and satisfies: α≥β.

[0013] According to some embodiments of this utility model, the width of the outer lens is greater than the width of the light-expanding reflector.

[0014] According to some embodiments of the present invention, the reflective layer is constructed as an aluminum-plated surface, and the reflectivity is not less than 0.85.

[0015] The vehicle according to this utility model is briefly described below.

[0016] The vehicle according to this utility model includes the headlight assembly described in any of the above embodiments. Since the vehicle according to this utility model includes the headlight assembly described in any of the above embodiments, the vehicle according to this utility model can reduce the number of components and cost, improve light utilization, and achieve a low beam widening effect to expand the illumination range.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram of a vehicle lamp assembly according to an embodiment of the present invention; Figure 2 This is a plan view of a vehicle headlight assembly according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the light spot generated at the focal line of the outer lens by the light-expanding reflector of the vehicle lamp assembly according to an embodiment of the present invention. Figure 4 This is a side view of the light propagation of a light-expanding reflector of a vehicle headlight assembly according to an embodiment of the present invention; Figure 5 This is a side view of the optical path of a light-expanding reflector of a vehicle headlight assembly according to an embodiment of the present invention; Figure 6 This is a top view of the optical path of a light-expanding reflector of a vehicle headlight assembly according to an embodiment of the present invention; Figure 7 This is a side view of the optical path of the outer lens of a vehicle lamp assembly according to an embodiment of the present invention under the action of parallel light; Figure 8 This is a top view of the optical path of the outer lens of a vehicle lamp assembly according to an embodiment of the present invention under the action of parallel light; Figure 9 This is a top view of the overall optical path of a vehicle lamp assembly according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the overall optical path structure of a vehicle lamp assembly according to an embodiment of the present invention; Figure 11 This is a diagram showing the broadened light pattern of a vehicle headlight assembly according to an embodiment of the present invention.

[0019] Figure label: 1. Headlight assembly; 11. Light source; 12. Amplifying reflector; 121. Protruding area; 13. External lens. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In related technologies, low beam broadening is mainly achieved based on optical principles. This involves forming a wider light spot at the focal point of an outer lens and then blocking this spot with a specific shape at the focal point, thus creating a broadened low beam pattern with a cutoff line. However, to form a clear and accurate cutoff line, additional structural components specifically designed to generate it are required. This not only increases the design complexity of the headlights and makes the manufacturing process more cumbersome, but also increases costs due to the introduction of additional components. Secondly, the operation of blocking the light spot inevitably results in the loss of some light pattern. The blocked light cannot participate in the effective illumination process, leading to reduced luminous efficiency and energy waste.

[0024] The following is for reference. Figures 1-11 Description of vehicle lamp assembly 1 according to an embodiment of the present utility model.

[0025] like Figures 1-6 , Figures 9-11 As shown, the vehicle headlight assembly 1 according to this utility model includes a light source 11 and a light-diffusing reflector 12. The light source 11 is the source of light, providing the light energy required for illumination of the entire headlight; the light-diffusing reflector 12 is responsible for reflecting and diffusing the light emitted by the light source 11.

[0026] The light-diffusing mirror 12 has a channel extending through the light-emitting direction of the light source 11. Light emitted from the light source 11 can propagate along this channel, achieving effective control and diffusion of the light. A reflective layer is formed on the inner surface of the channel, which is adapted to reflect the light from the light source 11 in the light-emitting direction. Through the reflection of the reflective layer, the light can propagate in the light-emitting direction.

[0027] The channel has a first wall and a second wall facing each other in a first direction. The first and second walls tend to be parallel in the direction away from the light source 11, so that the reflection and diffusion of light during propagation in the first direction are relatively uniform. When light is emitted from the light source 11 and enters the channel, it can maintain relatively stable propagation in the first direction under the reflection of the first and second walls. The light will not be over-focused or diverged during propagation, and a light spot with a certain width can be generated at the focal line of the outer lens 13. There is no need to block the light spot to form a cutoff line, which reduces the number of components and costs, and also avoids the loss of light effect caused by blocking, thus improving the utilization rate of light.

[0028] The channel has a third and a fourth wall facing each other in the second direction. These walls tend to be inclined away from each other in the direction away from the light source 11, thus diffusing light in the second direction. When light propagates within the channel to the third and fourth walls, it is reflected and dispersed in different directions due to the inclination of the walls. The diffusion effect gradually increases as the light moves away from the light source 11, allowing the headlights to illuminate a wider area in the second direction, achieving a widened low beam effect.

[0029] According to the vehicle headlight assembly 1 of this utility model, the reflective layer on the inner surface of the channel of the light-expanding reflector 12 causes the light emitted by the light source 11 to propagate in the light-emitting direction. The first and second walls, which tend to be parallel in the first direction of the channel, make the light reflection and diffusion uniform during propagation, so that it can propagate stably and generate a light spot with a certain width at the focal line of the outer lens 13. There is no need to block the light spot to form a cutoff line, which reduces the number of components and costs and improves the light utilization rate. The third and fourth walls, which tend to be inclined away from the channel in the second direction, cause the light to be reflected and diffused. The diffusion is enhanced as it moves away from the light source 11, making the illumination range of the vehicle headlight wider in the second direction and achieving the effect of widening the low beam.

[0030] Therefore, the vehicle headlight assembly 1 according to this utility model can reduce the number of parts and cost, improve light utilization, and achieve low beam widening to expand the illumination range.

[0031] It should be noted that, as Figure 3 and Figure 4 As shown, the light is reflected by the wall structure of the channel of the light-expanding reflector 12, generating a light spot with a certain width at the focal line of the outer lens 13 during propagation. The focal line of the outer lens 13 is located near the lower boundary of this light spot, ensuring that the light, after being refracted by the outer lens 13, forms a low beam pattern that meets the lighting requirements. This achieves both a suitable illumination width for the low beam in the horizontal direction (second direction), broadening the low beam, and effectively controlling the light distribution to avoid glare. Thus, while ensuring driving safety, the lighting effect of the headlights is optimized.

[0032] Figure 3 and Figure 4 The image plane is shown, which is used to visually represent the light spot generated by the light at the focal line of the outer lens 13. It should be noted that the image plane is only a reference plane set up for the convenience of observation and analysis, and such a physical entity does not exist in the actual structure of the vehicle lamp assembly 1.

[0033] Figure 11 The diagram shows the beam pattern curve corresponding to the headlight assembly 1. The beam pattern can be intuitively analyzed by observing the curve trend.

[0034] According to some embodiments of this utility model, the first wall and the second wall are spaced apart in the height direction, so that the channel has a certain spatial variation in the height direction, which can better control the distribution of light in the height direction.

[0035] The first and second walls gradually approach each other on the side closest to the light source 11. The light emitted from the light source 11 has a certain degree of divergence when it first leaves the light source 11. By gradually bringing the walls closer together near the light source 11, the initial divergence of the light can be constrained and guided to a certain extent, allowing the light to enter the channel more concentratedly and be reflected on the walls of the channel, thus reducing light loss.

[0036] According to some embodiments of this utility model, the first and second walls are constructed as freeform surfaces. A freeform surface is a surface without a regular geometric shape, and it does not possess a fixed mathematical expression or symmetry. The shape of a freeform surface can be freely defined and adjusted according to specific design requirements, and it can present extremely complex and diverse forms, giving it high flexibility and adaptability, allowing its surface shape to be molded according to different optical requirements.

[0037] By constructing the first and second walls as freeform surfaces, the reflection path of light can be more precisely controlled according to the laws of light propagation and the desired lighting effect.

[0038] It should be noted that the height direction is the first direction mentioned above, and the horizontal direction is the second direction mentioned above.

[0039] According to some embodiments of this utility model, such as Figure 2 As shown, a protruding region 121 is formed at the center of the light-expanding reflector 12, protruding beyond the outer periphery of the light-expanding reflector 12. The protruding region 121 can further adjust and optimize the distribution of light, and perform additional reflection and convergence on the light propagating through the channel at the center of the light-expanding reflector 12, thereby ultimately forming the desired light spot shape.

[0040] The protruding area 121 alters the light propagation environment in the central area, making it easier for light to undergo multiple reflections and focusing at the center. By using the protruding area 121 to additionally reflect and converge the light at the center of the beam-expanding reflector 12, the reflection and convergence of light on both sides of the beam-expanding reflector 12 are reduced, thereby allowing the light to spread better to both sides of the beam-expanding reflector 12. This results in better light diffusion in the second direction, enabling the headlights to illuminate a wider range in the second direction and achieving a low beam widening effect.

[0041] According to some embodiments of the present invention, the outer edges of the first wall and the second wall are inclined toward the light source 11 in the direction close to both sides. The outline of the light-expanding reflector 12 in the central region is further forward than the side regions, thereby forming a protruding region 121 in the center of the light-expanding reflector 12. Therefore, the central part of the light-expanding reflector 12 protrudes further away from the light source 11 in the overall outline.

[0042] The outer edges of the first and second walls refer to the edges of the first and second walls that are away from the light source 11. Light will leave the channel when it passes through the outer edges of the first and second walls. By tilting the outer edges of the first and second walls towards the light source 11 in a direction close to both sides, light propagating to both sides of the light-expanding reflector 12 will more easily leave the channel and thus spread out on both sides, achieving the effect of widening the near beam.

[0043] According to some embodiments of this utility model, such as Figure 1 , Figure 2 , Figures 7-10 As shown, the headlight assembly 1 also includes an outer lens 13, which is positioned on the light-emitting side of the light-expanding reflector 12. Therefore, the light processed by the light-expanding reflector 12 is directly projected onto the outer lens 13. The light-expanding reflector 12 is responsible for reflecting and diffusing the light emitted by the light source 11, causing the light to propagate in a specific direction and form a certain distribution characteristic. The outer lens 13 then performs secondary optical adjustments on the light that has already been processed by the light-expanding reflector 12.

[0044] The outer lens 13 is constructed as an arc shape protruding from the side opposite to the direction of the light source 11. The arc shape of the outer lens 13 can precisely control the refraction angle and direction of light, so that the light propagates and is distributed in a predetermined manner, which helps to form a light pattern that meets specific requirements.

[0045] Specifically, the low beam pattern needs to have a certain cutoff line to avoid glare for oncoming drivers, while ensuring sufficient illumination width and brightness. The beam diffuser 12 allows light to generate a light spot of a certain width at the focal line of the outer lens 13 during propagation. The outer lens 13 only needs to diffuse the light spot vertically, not horizontally. When the focal line of the outer lens 13 is near the lower boundary of the light spot, the light passing through the outer lens 13 will be projected downwards, that is, towards the ground, creating a broadened beam pattern with a cutoff line. This effectively controls the light distribution, avoids glare, and has high luminous efficiency.

[0046] It should be noted that, Figure 7 and Figure 8 The pattern presented is not the optical path pattern formed after the light received by the outer lens 13 and processed by the light-amplifying mirror 12, but rather the optical path pattern generated under the action of parallel light introduced from the light-emitting side of the outer lens 13. Figure 7 and Figure 8 The presented optical path diagram can demonstrate the optical characteristics of the outer lens 13 as an arc-shaped focal line lens.

[0047] According to some embodiments of the present invention, the outer lens 13 has an angle α between its two edges and the center in the width direction, and an angle β between the third wall and the fourth wall, satisfying: α≥β.

[0048] The included angle α determines the size of the outer lens 13 in the horizontal direction and the range of light reception and emission. A larger α value allows the outer lens 13 to receive more light in the horizontal direction and emit it at a wider angle, which helps to expand the illumination width of the headlight in the horizontal direction, enabling the headlight to illuminate a wider road area.

[0049] The third and fourth walls tend to be inclined away from each other in the direction away from the light source 11, and the size of the included angle β directly affects the degree of light diffusion in the second direction. When light propagates in the channel to the third and fourth walls, due to the inclination of the walls, the light will be reflected and spread in different directions. The larger the angle β, the stronger the diffusion effect of light in the horizontal direction.

[0050] α≥β ensures that the light diffused horizontally by the light-expanding reflector 12 can be effectively captured by the outer lens 13, without the loss of some light due to the narrowness of the outer lens 13. This fully utilizes the horizontal widening effect achieved by the light-expanding reflector 12. The outer lens 13 can receive and project the light diffused by the light-expanding reflector 12, ensuring that the headlights form a wide and uniform illumination pattern in the horizontal direction, while avoiding unnecessary energy loss.

[0051] According to some embodiments of this utility model, the width of the outer lens 13 is greater than the width of the light-diffusing reflector 12. Since the light-diffusing reflector 12 diffuses light horizontally, when the width of the outer lens 13 is greater than that of the light-diffusing reflector 12, it can more fully receive and process the light processed by the light-diffusing reflector 12, reducing light loss during propagation and further improving light utilization, thus enabling the headlights to emit light with a wider coverage area.

[0052] According to some embodiments of this utility model, the reflective layer is constructed as an aluminum-plated surface with a reflectivity of not less than 0.85. When an aluminum-plated surface is formed as a reflective layer on the inner surface of the channel of the light-expanding reflector 12, the reflective layer can effectively reflect the light emitted by the light source 11. Most of the light rays that hit the aluminum-plated surface are reflected back and propagate in a predetermined direction, thereby achieving effective control and guidance of the light, enabling the light to be concentrated and propagated in the light-emitting direction, thus improving the lighting effect of the vehicle headlight.

[0053] Reflectivity is the ratio of reflected light intensity to incident light intensity, reflecting the reflective layer's ability to reflect light. Higher reflectivity means the reflective layer can reflect more light, resulting in less light loss.

[0054] The reflectivity of the reflective layer is not less than 0.85, so at least 85% of the incident light can be reflected by the reflective layer, reducing light loss and improving light utilization, thus making the light emitted by the car headlights brighter.

[0055] The vehicle according to this utility model is briefly described below.

[0056] The vehicle according to this utility model includes the headlight assembly 1 in any of the above embodiments. Since the vehicle according to this utility model includes the headlight assembly 1 in any of the above embodiments, the vehicle according to this utility model can reduce the number of parts and cost, improve light utilization, and achieve a low beam widening effect to expand the illumination range.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle lighting assembly, characterized in that, include: Light source (11); A light-expanding reflector (12) is formed with a channel extending through the light-emitting direction of the light source (11). A reflective layer is formed on the inner surface of the channel, and the reflective layer is adapted to reflect the light from the light source (11) toward the light-emitting direction. in The channel has a first wall and a second wall facing each other in a first direction, the first wall and the second wall tending to be parallel in a direction away from the light source (11); The channel has a third wall and a fourth wall facing each other in a second direction, the third wall and the fourth wall tending to be inclined away from each other in a direction away from the light source (11).

2. The vehicle lighting assembly according to claim 1, characterized in that, The first wall and the second wall are spaced apart in the height direction, and the first wall and the second wall gradually move closer to each other on the side closer to the light source (11).

3. The vehicle lighting assembly according to claim 2, characterized in that, The first wall and the second wall are constructed as freeform surfaces.

4. The vehicle lighting assembly according to claim 1, characterized in that, The center of the light-expanding reflector (12) has a protruding area (121) that protrudes from the outer periphery of the light-expanding reflector (12).

5. The vehicle lighting assembly according to claim 2, characterized in that, The outer edges of the first wall and the second wall are inclined toward the light source (11) in a direction close to both sides.

6. The vehicle lighting assembly according to claim 1, characterized in that, Also includes: The outer lens (13) is constructed as an arc shape protruding from the direction of the light source (11), and the outer lens (13) is disposed on the light-emitting side of the light-expanding reflector (12).

7. The vehicle lighting assembly according to claim 6, characterized in that, The outer lens (13) has an angle α between its two edges and the center of the circle in the width direction, and the angle between the third wall and the fourth wall is β, and satisfies: α≥β.

8. The vehicle lighting assembly according to claim 6, characterized in that, The width of the outer lens (13) is greater than the width of the light-expanding reflector (12).

9. The vehicle lighting assembly according to claim 1, characterized in that, The reflective layer is constructed with an aluminum-plated surface and has a reflectivity of not less than 0.

85.

10. A vehicle, characterized in that, Includes the vehicle lighting assembly as described in any one of claims 1-9.

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