A vehicle light

Abstract

The utility model provides a kind of lighting car light, it is related to lighting technical field, including light ray refracting plate, between light emitting component and outer cover, including reflecting wall and multiple refracting surface of alternative arrangement, light emitting component emitted light is directly shot to refracting surface or after reflecting wall reflection reaches refracting surface.Affirmative effect is through the synergies of multiple refracting surface of alternative arrangement and reflecting wall in light ray refracting plate, realize accurate control and efficient distribution to light, significantly increase light-emitting angle, effectively cover rear and lateral larger area of vehicle, reduce even eliminate the lighting blind area existing in traditional design;Light is guided and diffused multiple times by refracting surface, so that the light intensity distribution of illumination area is more uniform, meets the requirements of new national standard GB5920-2024 on road surface illumination, helps drivers to more clearly identify road obstacles, pedestrians and other vehicles, and improves the safety of operation in low-light environments.

Description

Technical Field

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

[0002] Automotive lighting systems are a crucial safety feature of vehicles, primarily used to provide road illumination, signal indication, and environmental warnings at night or in low-light conditions to ensure driving safety and ease of operation. Different types of vehicle lights, including headlights, taillights, reversing lights, turn signals, and fog lights, perform multiple functions such as illumination, signaling, and warning. Their optical performance and arrangement directly affect the driver's field of vision and the recognition ability of surrounding road users.

[0003] Currently, due to cost control and space constraints, many automakers still use simplified optical solutions in the design of some lights, such as using only a single lamp layout or a small angle of light output design, resulting in a limited lighting range and obvious dark areas. Especially in complex lighting conditions or in bad weather, insufficient lighting may pose safety hazards.

[0004] In recent years, with the continuous improvement of automotive safety standards, relevant regulations have also imposed stricter optical performance requirements on various types of vehicle lights. Taking reversing lights as an example, GB5920-2019 only specified that their light pattern distribution should be 45 degrees to the left and right, 10 degrees upward and 5 degrees downward, resulting in a relatively limited illumination coverage. The newly released GB5920-2024 standard further clarifies that the lower edge illumination angle for M1 category vehicles is extended to 30 degrees, and adds road illuminance requirements to significantly reduce blind spots at the rear of the vehicle and improve reversing safety. Similarly, other types of vehicle lights, such as rear fog lights and position lights, are also facing more comprehensive optical performance optimization requirements in the evolution of regulations.

[0005] Against this backdrop, there is an urgent need for an optical structure solution that can flexibly adapt to various vehicle lighting installation spaces, meet the new national standard for wide-angle and illuminance requirements, and can be efficiently integrated into existing vehicle lighting assemblies. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a lighting vehicle lamp, including an outer cover, a housing, and a light-emitting component, and further including:

[0007] A light refraction plate, located between the light-emitting component and the outer cover, includes a reflective wall and multiple alternately arranged refractive surfaces. The light emitted by the light-emitting component is directly incident on the refractive surfaces or reflected by the reflective wall to the refractive surfaces.

[0008] Preferably, the refractive surface comprises a first optical surface, a second optical surface, and a third optical surface that are cyclically and alternately connected.

[0009] Preferably, the first optical surface and the second optical surface form a V-shaped structure.

[0010] Preferably, the third optical surface is a plane or an arc surface.

[0011] Preferably, the included angle between the first optical surface and the second optical surface is in the range of 30°≦a≦45°.

[0012] Preferably, the third optical surface is an arc surface, and the angle between the first line formed by connecting the arc apex and any arc apex of the third optical surface and the second line formed by connecting the two arc apexes is no greater than 45°.

[0013] Preferably, the reflective wall is a hollow cone shape, with the upper opening of the hollow cone disposed on the light-emitting component and the lower opening of the hollow cone disposed on the refractive surface.

[0014] Preferably, the outer cover and the housing are connected by snap-fit.

[0015] Preferably, the light-emitting component includes a PCBA board and a plurality of LED beads disposed on the PCBA board, and the light refraction plate is fixed to the PCBA board by screws.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] 1. Through the synergistic effect of multiple alternating refractive surfaces in the light refraction plate and the reflective wall, precise control and efficient distribution of light are achieved, significantly increasing the light output angle and effectively covering a large area behind and to the sides of the vehicle, reducing or even eliminating lighting blind spots that exist in traditional designs.

[0018] 2. The light is guided and diffused multiple times by the refracting surface, making the light intensity distribution in the illuminated area more uniform, which meets the requirements for road illuminance in the new national standard GB5920-2024. This helps drivers to more clearly identify road obstacles, pedestrians and other vehicles, and improves the safety of operation in low-light environments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a vehicle lighting lamp in a preferred embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the lighting vehicle lamp in a preferred embodiment of the present invention.

[0021] Figure 3 In a preferred embodiment of this utility model, the light path diagram of the light-emitting component is shown.

[0022] Figure 4In a preferred embodiment of this utility model, another light path diagram of the light-emitting component is shown.

[0023] Figure 5 A diagram illustrating the illumination range of existing vehicle lights;

[0024] Figure 6 This is a preferred embodiment of the present invention, showing the illumination range of the vehicle's lighting lamp. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment; other embodiments that conform to the spirit of the present invention may also fall within its scope.

[0026] In a preferred embodiment of this utility model, based on the above-mentioned problems existing in the prior art, a lighting vehicle lamp is now provided, such as... Figure 1 , Figure 2 The diagram shows an outer cover 1, a housing 2, and a light-emitting component 3, and also includes:

[0027] The light refraction plate 4 is located between the light-emitting component 3 and the outer cover 1. It includes a reflective wall 42 and multiple alternately arranged refractive surfaces 41. The light emitted by the light-emitting component 3 is directly incident on the refractive surface 41 or reflected by the reflective wall 42 to the refractive surface 41.

[0028] Specifically, the lighting vehicle lamp of this utility model is as follows: Figure 2 As shown, the outer cover 1 and the housing 2 are connected to form the overall housing of the lighting vehicle lamp, which encloses the light-emitting component 3 and the light refraction plate 4 inside, and the light refraction plate 4 is located in the light path from the light-emitting component 3 to the outer cover 1.

[0029] In this embodiment, by introducing an innovative light refraction plate 4 structure, optical performance and safety are significantly improved, resulting in the following beneficial effects:

[0030] 1. Effectively expand the lighting range and eliminate visual dark areas: Through the synergistic effect of multiple alternating refractive surfaces in the light refraction plate and the reflective wall, precise control and efficient distribution of light are achieved, significantly increasing the light output angle and effectively covering a large area behind and to the sides of the vehicle, reducing or even eliminating lighting blind spots that exist in traditional designs.

[0031] 2. Improve road surface illumination uniformity and visibility: The light is guided and diffused multiple times by the refractive surface, making the light intensity distribution in the illuminated area more uniform, which meets the requirements for road surface illumination in the new national standard GB5920-2024. This helps drivers to more clearly identify road obstacles, pedestrians and other vehicles, and improves the safety of operation in low-light environments.

[0032] 3. High structural integration and applicability to various vehicle lighting types: This optical structure is not limited to reversing lights, but can also be widely used in various vehicle lighting systems such as rear fog lights, position lights, and turn signals. It has strong compatibility, is easy to adapt to existing vehicle lighting assembly layouts, and has good modularization and integration potential.

[0033] 4. High light efficiency and energy saving: By recovering and reflecting some light through the reflective wall, light loss is reduced and the utilization efficiency of the light-emitting components is improved, so as to control the energy consumption level while achieving better lighting performance.

[0034] In summary, the lighting lamp provided by this utility model not only performs excellently in terms of optical performance and has good practicality and economy, but also has important value in improving the overall vehicle lighting safety and standard compliance.

[0035] In a preferred embodiment of the present invention, the refractive surface 41 includes a first optical surface 411, a second optical surface 412, and a third optical surface 413 that are connected in a cyclical alternation.

[0036] In a preferred embodiment of this invention, the first optical surface 411 and the second optical surface 412 form a V-shaped structure. The opening of the V-shaped structure faces the light-emitting component 3.

[0037] In a preferred embodiment of this invention, the third optical surface 413 is a planar surface or an arc surface. When an arc surface is used, the concave surface of the arc surface faces the light-emitting component 3.

[0038] Specifically, the structural diagram of the light refractor and the light path of the light-emitting component in this embodiment are as follows: Figure 3 , Figure 4 As shown, the refractive surface is composed of three different optical surfaces. The light refraction plate proposed in this invention is an optical pattern structure. Through the synergistic cooperation of its unique V-shaped reflective surface (first optical surface 411, second optical surface 412) and diffusion surface (third optical surface 413), it effectively achieves a large-angle and highly uniform lighting effect.

[0039] Its implementation principle includes:

[0040] After some light rays are emitted from the LED, they are first reflected by the reflective wall 42, changing their initial propagation direction;

[0041] The reflected light then enters the V-shaped structure formed by the first optical surface 411 and the second optical surface 412, and undergoes a second or even multiple reflections to further adjust the exit angle.

[0042] Ultimately, the light rays are refracted out of the optical system at large angles (such as 80° to the left and right, 20° to the top, and 40° to the bottom) to achieve wide-angle illumination of distant objects.

[0043] The light rays that directly illuminate the V-shaped structure formed by the first optical surface 411 and the second optical surface 412 from the LED also undergo a second or even multiple reflections to further adjust the emission angle.

[0044] Ultimately, the light rays are refracted out of the optical system at large angles (such as 80° to the left and right, 20° to the top, and 40° to the bottom) to achieve wide-angle illumination of distant objects.

[0045] Another portion of the light, after being reflected by the same reflective wall 42, does not enter the V-shaped structure, but is directly incident on the third optical surface 413; the third optical surface 413 is a flat or slightly curved surface, which plays a diffusion role, so that the light forms a uniform and soft light spot in the middle area, avoiding dark areas or hot spots in the center.

[0046] Light rays that directly illuminate the third optical surface 413 from the LED also diffuse after passing through the third optical surface 413, forming a uniform and soft light spot in the middle area and avoiding dark areas or hot spots in the center.

[0047] The first and second optical surfaces are mainly responsible for large-angle deflection, while the third optical surface is responsible for central diffusion. The three are arranged in a cyclical alternation.

[0048] Different optical surface units are repeatedly distributed in space to jointly construct a complete and uniform large-angle illumination pattern.

[0049] The technical advantages of the above structure are:

[0050] 1. Significantly improves lighting angle and range:

[0051] By using a V-shaped reflective surface to adjust the optical path, a light output angle far exceeding that of conventional optical systems (below 40°) is achieved, significantly expanding the illumination area, especially meeting the requirements of the new national standard GB5920-2024 for the lower edge illumination range. Figure 5 and Figure 6 As shown, the illumination range of existing vehicle lights is significantly smaller than that of the lighting vehicle lights of this utility model.

[0052] 2. Uniform light distribution, eliminating dark areas:

[0053] The alternating use of V-shaped and diffused surfaces balances the illuminance between the edge and center areas, resulting in a uniform transition of the overall light spot without obvious boundaries between light and dark or blind spots.

[0054] 3. Simple structure, easy to integrate and mass-produce:

[0055] The optical surfaces are arranged in a regular cycle, resulting in a compact and reasonable structure that eliminates the need for complex mechanisms or additional optical components, thus reducing mold complexity and production costs.

[0056] It can be directly integrated into existing vehicle lighting assemblies and is suitable for various types of vehicle lights such as reversing lights, position lights, and turn signals.

[0057] 4. Highly compatible and compliant with new regulations:

[0058] The structure is flexible in design and can be adapted to different regulations (such as EU, SAE, GB, etc.) and vehicle requirements by adjusting the V-angle or the curvature of the diffuser surface; it is especially suitable for the latest standards for the lower edge illumination angle of the reversing lights and road illuminance of M1 category vehicles.

[0059] 5. High luminous efficacy, energy-saving and reliable:

[0060] Most of the light rays remain within the effective range after reflection / refraction, resulting in high light energy utilization and avoiding ineffective dissipation. This allows for better lighting effects with the same LED power.

[0061] In summary, this optical pattern structure, through the ingenious alternating design of V-shaped reflective and diffused surfaces and optical path control, achieves a wide-angle and highly uniform lighting effect within a limited space. It also has multiple advantages such as simple structure, strong adaptability, compliance with new regulations, and controllable cost, making it a high-performance solution particularly suitable for modern automotive lighting optical systems.

[0062] If further expansion to other types of automotive lights or international regulatory applications is required, this structure also offers good adjustability and scalability.

[0063] In a preferred embodiment of this invention, the included angle between the first optical surface and the second optical surface is in the range of 30°≦a≦45°.

[0064] Specifically, this angle range is the optimal range verified through optical simulation and experiments. When the included angle α is between 30° and 45°, the V-shaped structure can reflect the light reflected from the reflector wall in the most efficient way, and finally project the light accurately to the far-end area required by regulations and for safe driving (such as 80° to the left and right, and 40° down).

[0065] If the included angle α is too large (>45°), the exit angle of the light after secondary reflection may not be large enough to effectively cover the area below the new regulatory requirements, resulting in insufficient far-end lighting intensity.

[0066] If the included angle α is too small (<30°), the light path may be too tortuous, the light energy will be severely lost in multiple reflections, reducing optical efficiency. It may also cause the light pattern to be too dispersed, forming stray light.

[0067] In a preferred embodiment of the present invention, the third optical surface is an arc surface, and the angle between the first line formed by connecting the arc apex and any arc apex of the third optical surface and the second line formed by connecting the two arc apexes is no greater than 45°.

[0068] Specifically, this angle (often called the elevation angle) defines the flatness or steepness of the diffusion arc and is key to controlling the uniformity of lighting in the central area.

[0069] Limiting the elevation angle of the curved surface to no more than 45° means that the third optical surface is a relatively gentle curved surface.

[0070] The primary function of the gently curved surface is to scatter and mix light, rather than drastically alter the light path. It can softly diffuse directly incident light, effectively filling the central area between the two wide-angle light spots generated by the V-shaped structure, eliminating dark areas, and achieving a smooth transition from the center to the edge of the entire lighting area.

[0071] The V-shaped structure works perfectly with the V-shaped surface to form a uniform light spot. The V-shaped structure (responsible for wide-angle deflection) and the gently sloping diffuser surface (responsible for center filling) are arranged alternately. This angle of ≤45° ensures that the functions of the diffuser surface and the V-shaped structure complement each other without conflict.

[0072] If the arc is too steep (the elevation angle is too large), it will over-focus or produce uncontrollable refraction, which may form bright spots or new dark areas in the central region, disrupting the overall uniformity.

[0073] In a preferred embodiment of this utility model, the reflective wall is a hollow cone shape, with the upper opening of the hollow cone shape disposed on the light-emitting component and the lower opening of the hollow cone shape disposed on the refractive surface.

[0074] Specifically, in this embodiment, the reflective wall is designed as a hollow cone, with its upper opening mask placed on the light-emitting component (such as an LED) and its lower opening mask placed on the refractive surface. This structure has the following significant advantages:

[0075] The hollow cone-shaped inner wall forms an effective reflective surface, which can capture light emitted laterally and rearward by the light-emitting component that might otherwise be lost, recover it and guide it to the next stage optical element (refracting surface), significantly improving the utilization rate of light.

[0076] The initial conical structure constrains and guides the light, directing it more concentratedly and orderly towards the subsequent V-shaped optical and diffusion surfaces. This lays a solid foundation for achieving precise large-angle deflection and uniform diffusion, preventing the light from becoming chaotic.

[0077] This structure concentrates the light into a relatively uniform range, ensuring that the light enters the refractive surface 41 at the optimal angle. This allows the V-shaped reflective surface (first optical surface 411, second optical surface 412) and the diffuser surface (third optical surface 413) to work more stably and efficiently, ultimately greatly improving the consistency and uniformity of the output light pattern.

[0078] By collecting and utilizing lateral stray light, the energy of light rays directed towards large angle areas (such as 80° to the left and right, and 40° down) is enhanced, which directly helps to eliminate dark areas on both sides of the rear of the vehicle and near the ground, perfectly meeting the stringent requirements of the new national standard for wide-angle and low-position lighting.

[0079] In a preferred embodiment of this invention, the outer cover and the housing are connected by a snap-fit.

[0080] In a preferred embodiment of the present invention, the light-emitting component 3 includes a PCBA board 31 and a plurality of LED beads 32 disposed on the PCBA board, and the light refraction plate is fixed to the PCBA board by screws.

[0081] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made using the content of this specification and illustrations should be included within the protection scope of the present utility model.

Claims

1. A vehicle lighting lamp, comprising an outer cover, a housing, and a light-emitting component, characterized in that, Also includes: A light refraction plate, located between the light-emitting component and the outer cover, includes a reflective wall and multiple alternately arranged refractive surfaces. The light emitted by the light-emitting component is directly incident on the refractive surfaces or reflected by the reflective wall to the refractive surfaces.

2. The illuminated vehicle lamp of claim 1, wherein The refractive surface includes a first optical surface, a second optical surface, and a third optical surface that are cyclically and alternately connected.

3. The illuminated vehicle lamp of claim 2, wherein The first optical surface and the second optical surface form a V-shaped structure.

4. The illuminated vehicle lamp of claim 2, wherein The third optical surface is either a plane or an arc surface.

5. The lighting lamp according to claim 3, characterized in that, The included angle between the first optical surface and the second optical surface is in the range of 30°≦a≦45°.

6. The illuminated vehicle lamp of claim 4, wherein, The third optical surface is an arc surface, and the angle between the first line formed by connecting the arc apex and any arc apex of the third optical surface and the second line formed by connecting the two arc apexes is no greater than 45°.

7. The illuminated vehicle lamp of claim 1, wherein The reflective wall is a hollow cone shape, with the upper opening of the hollow cone on the light-emitting component and the lower opening of the hollow cone on the refractive surface.

8. The lighting lamp according to claim 1, characterized in that, The outer cover and the housing are connected by snap fasteners.

9. The vehicle light of claim 1, wherein, The light-emitting component includes a PCBA board and a plurality of LED beads disposed on the PCBA board, and the light refraction plate is fixed to the PCBA board by screws.

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