A front light with LED point light illumination uniformity

Abstract

The utility model discloses a front headlamp of LED point light illumination evenness, including lamp stand casing, install the interior decoration lamp frame in the inside of lamp stand casing, interior decoration lamp frame has the main light area of being located in the center and the day running lamp area of being located in the outside and top of main light area, and the main light area has small lamp hole and big lamp hole, and small lamp hole is used for installing fog lamp or turn light, and the day running lamp area is used for installing lens headlamp, the transition frame of surrounding and buckling in the periphery of interior decoration lamp frame, install the cylinder cover of big lamp hole and protrude, and the lens of lens headlamp is exposed to the sun in the cylinder cover, buckle the reflector of interior decoration lamp hole frame downside and surround the day running lamp area, and the lamp shade of covering in the lamp stand casing front section, wherein, the main light area has the multichannel light guide line groove of being located in the front side of cylinder cover, the utility model discloses through the gradient depth design of light guide line groove, the honeycomb light reflection structure of reflector and the microlens array of lamp shade, realize the seamless link of main light and day running light line, eliminate the light spot of uneven light and shade, and the illumination coverage is wider.

Description

Technical Field

[0001] This utility model belongs to the field of automotive headlight technology, specifically, it relates to a headlight with uniform LED point light illumination. Background Technology

[0002] As the automotive industry transforms towards intelligent and electric vehicles, LED headlights, with their advantages of low energy consumption, fast response speed, and long lifespan, have gradually replaced traditional halogen and xenon lamps, becoming the mainstream configuration. Industry data shows that in 2024, the global penetration rate of LED headlights in automobiles exceeded 75%, with the penetration rate in high-end passenger vehicles reaching over 90%. User demands for headlights are no longer limited to basic lighting functions but have extended to dimensions such as lighting uniformity, light pattern stability, distinctive design, and long-term reliability. Especially in complex scenarios such as high-speed driving at night and in rainy or foggy weather, lighting uniformity directly affects the driver's field of vision and judgment accuracy, making it one of the core factors ensuring driving safety.

[0003] However, existing LED headlights still have many technical pain points in practical applications, and a systematic solution has not yet been formed. Specific problems are as follows: poor lighting uniformity, easy to produce light spots and blind spots. The light guiding structure design of existing LED headlights focuses on the optimization of single components, without considering the light synergy between multiple components, resulting in uneven "light spots" or "shadow bands" in the illuminated area.

[0004] The connection between the main headlights and daytime running lights is a prominent issue: the light from the main headlights (projector headlights) is concentrated and projected, while the daytime running lights are mostly arrayed LEDs that shine directly. In areas where the two lights overlap, they can easily create a "strong light superposition zone," while in areas where they do not overlap, they can create a "visual blind spot" due to insufficient light coverage. Especially when the vehicle is turning or meeting oncoming traffic, the alternation of light spots and blind spots can easily interfere with the driver's judgment and increase safety hazards.

[0005] The light diffusion structure design is unreasonable: Although some headlights have a light guide structure inside the lamp cover, the light guide texture is mostly designed with uniform depth, which cannot adjust the diffusion direction according to the light intensity gradient. This results in the light being too strong near the lamp beads (causing glare) and the light being too weak far away from the lamp beads (insufficient brightness), which does not meet the requirement of "the brightness gradient of the lighting area should be smooth transition" in the national standard GB 4785-2019 "Installation Regulations for External Lighting and Light Signaling Devices of Automobiles and Trailers".

[0006] The reflective components are inefficient and lack uniformity: most existing reflectors use flat or simple curved surfaces without fine surface treatment, which makes it easy for light to be reflected in a "directional reflection" rather than a "diffuse reflection". This causes the reflected light to concentrate in a local area, further aggravating the problem of uneven brightness. Some products that use honeycomb reflective structures have apertures that are too large (more than 2 mm) or too small (less than 0.3 mm), which either cannot effectively diffuse the light or cause the light loss rate to exceed 20%, affecting the lighting efficiency.

[0007] In addition, cars are constantly subjected to vibrations during driving (such as road bumps and engine vibrations), and the existing headlight component connection structure design has defects, which can easily lead to loose assembly and thus affect the lighting function.

[0008] The offset of the lamp frame border obstructs part of the light projection path, causing the lighting pattern to be distorted and affecting the field of vision coverage.

[0009] In summary, the existing LED headlights suffer from technical deficiencies in illumination uniformity and assembly stability, failing to meet users' demands for driving safety and product reliability. Therefore, there is an urgent need for an LED headlight that can achieve uniform point illumination and stable installation, fundamentally solving the aforementioned problems, improving illumination uniformity and lifespan, and driving further development of automotive lighting technology. Utility Model Content

[0010] In view of this, the technical problem to be solved by this utility model is to provide a headlight with uniform LED point light illumination. By optimizing the component structure and light guiding design, the problem of uneven illumination and loose assembly of existing headlights is solved, thereby improving lighting stability and driving safety.

[0011] To solve the above-mentioned technical problems, this utility model discloses a headlight with uniform LED point light illumination, comprising: Lamp holder housing; An inner decorative light frame is installed inside the lamp holder housing. The inner decorative light frame has a main light area in the center and daytime running light areas on the outside and top of the main light area. The main light area has small light holes and large light holes. The small light holes are used to install fog lights or turn signals, and the daytime running light areas are used to install projector headlights. A transitional frame that surrounds and snaps onto the outer edge of the inner decorative light frame; The protruding cylindrical cover is installed in the headlight hole, and the lens of the lens headlight is exposed. The reflector that snaps onto the underside of the interior decorative light hole frame and surrounds the daytime running light area; and A lampshade that covers the front part of the lamp holder housing; The main light area has multiple light guide grooves located on the front side of the bulb.

[0012] Furthermore, the daytime running light area is equipped with multiple reflector units, each of which includes a reflector bowl and a light guide hole located on one side of the reflector bowl. The light guide hole is located on the outer side and top of the inner decorative light frame and is used to install LED daytime running light beads.

[0013] Furthermore, multiple decorative ridges are provided on the inner side of the main lighting area.

[0014] Furthermore, concave arc openings are provided at both ends of the cylindrical cover.

[0015] Furthermore, the depth of the light guide groove gradually decreases from the side near the shroud towards the edge of the main light area.

[0016] Furthermore, the inner surface of the reflector is provided with a honeycomb reflective structure, and the aperture of the honeycomb reflective structure is 0.5-2mm.

[0017] Furthermore, a microprism array is provided on the inner wall of the lampshade corresponding to the position of the main lamp area, and the prism height of the microprism array is 0.1-0.3mm.

[0018] Furthermore, the inner surface of the reflector bowl is coated with an aluminum reflective layer, and the radius of curvature of the reflector bowl is 15-30mm.

[0019] Furthermore, the inner side of the transition frame is provided with a flexible buckle, which forms an interference fit with the outer wall of the inner decorative light frame.

[0020] Compared with the prior art, the present invention can achieve the following technical effects: By using the gradient depth design of the light guide groove, the honeycomb reflective structure of the reflector, and the microprism array of the lampshade, the seamless connection between the main light and the daytime running light is achieved, eliminating uneven light spots and providing a wider lighting coverage. The flexible buckle of the transition frame forms an interference fit with the inner decorative light frame, which can resist the vibration during vehicle movement, avoid changes in the light reflection path caused by component displacement, and ensure the lighting stability for long-term use.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the internal structure of a headlight with uniform LED point light illumination according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the interior decorative lamp frame according to an embodiment of the present utility model.

[0023] Attached Figure Labels

[0024] Lamp holder housing 10, inner decorative lamp frame 20, main lamp area 30, small lamp hole 31, large lamp hole 32, decorative ridge 33, daytime running light area 40, reflector bowl 41, light guide hole 42, transition frame 50, cylindrical cover 60, concave arc opening 61, reflector 70, light guide groove 80. Detailed Implementation

[0025] The following will describe in detail the implementation of this utility model with reference to the accompanying drawings and embodiments, so that the implementation of this utility model can be fully understood and carried out based on how technical means are used to solve technical problems and achieve technical effects.

[0026] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the internal structure of a headlight with uniform LED point light illumination according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the interior decorative lamp frame according to an embodiment of the present utility model.

[0027] As shown in the figure, a headlight with uniform LED point lighting includes a lamp holder housing 10, an inner decorative lamp frame 20, a transition frame 50, a cylindrical cover 60, a reflector 70, and a lamp shade. The components work together to achieve uniform guidance and stable assembly of light.

[0028] In detail, the lamp holder housing 10 serves as the basic support component of the headlight, with reserved mounting positions for internal components, extended brackets around it for assembly, and waterproof and ventilated holes reserved at the rear, providing fixation and protection for the overall structure.

[0029] The inner decorative light frame 20 is installed inside the lamp holder housing 10, dividing the central main light area 30 into the outer and top daytime running light areas 40, which are separated and do not interfere with each other, and the layout is simple. The main light area 30 has small light holes 31 (for installing fog lights or turn signals) and headlight holes 32 (for installing projector headlights). The projector headlights are selected from commercially available conventional light sources with lenses, used to achieve high and low beam illumination. The inner side of the main light area 30 has multiple decorative ridges 33, which serve both aesthetic decoration and light diffusion functions.

[0030] The transition frame 50 surrounds and snaps onto the outer perimeter of the inner decorative light frame 20. An elastic buckle is provided on the inner side, forming an interference fit with the outer wall of the inner decorative light frame 20, improving assembly stability and preventing component displacement due to vibration. It also forms a transition, and both can ultimately be fixed to the lamp holder housing 10 with screws.

[0031] The cylindrical cover 60 of this utility model is installed in the headlight hole 32 and protrudes outward to expose the lens of the lens headlight. It has concave arc mouths 61 at both ends to reduce the obstruction and refraction loss of light at the edge of the cylindrical cover 60.

[0032] In addition, the reflector 70 is clipped to the lower side of the inner decorative light frame 20 and surrounds the daytime running light area 40, and consists of two reflective decorative pieces. The inner surface is provided with a honeycomb reflective structure with a hole diameter of 0.5-2mm to enhance the uniformity of light reflection and avoid local light spots.

[0033] The lampshade of this invention is located at the front of the lamp holder housing 10. An array of microprisms with a height of 0.1-0.3 mm is arranged on the inner wall corresponding to the main lamp area 30 to further diffuse the light from the main lamp area 30 and optimize the lighting pattern. The lampshade can be heat-fused to the lamp holder housing 10.

[0034] The main light area 30 is located on the front side of the cylindrical cover 60 and has multiple light guide grooves 80. The light guide grooves 80 are evenly distributed along the lower side of the cylindrical cover 60, and the depth gradually decreases from the side close to the cylindrical cover 60 towards the edge of the main light area 30, which can guide the lens headlight beam to diffuse to the surrounding area and eliminate lighting blind spots.

[0035] In addition, the daytime running light area 40 is provided with multiple reflective units, each of which includes a reflector bowl 41 and a light guide hole 42. The light guide hole 42 is located on the outside and top of the inner decorative light frame 20 and is used to install LED daytime running light beads. The inner surface of the reflector bowl 41 is coated with an aluminum reflective layer and has a radius of curvature of 15-30mm, which can enhance the reflection efficiency and uniformity of the LED daytime running light.

[0036] In summary, this utility model achieves seamless connection between the main light and daytime running light by using the gradient depth design of the light guide groove, the honeycomb reflective structure of the reflector, and the microprism array of the lampshade. This eliminates uneven light spots and provides a wider lighting coverage. The elastic buckle of the transition frame forms an interference fit with the inner decorative light frame, which can resist the vibration during vehicle movement, avoid changes in the light reflection path caused by component displacement, and ensure lighting stability during long-term use.

[0037] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A headlight with uniform LED point light illumination, characterized in that, include: Lamp holder housing; An inner decorative light frame is installed inside the lamp holder housing. The inner decorative light frame has a main light area located in the center and daytime running light areas located outside and at the top of the main light area. The main light area has small light holes and large light holes. The small light holes are used to install fog lights or turn signals, and the daytime running light areas are used to install projector headlights. A transitional frame that surrounds and snaps onto the outer perimeter of the inner decorative light frame; A protruding cylindrical cover is mounted on the headlight hole, the cylindrical cover exposing the lens of the lens headlight; The reflector is snapped onto the lower side of the inner decorative light hole frame and surrounds the daytime running light area; as well as A lampshade covering the front section of the lamp holder housing; The main light area has multiple light guide grooves located on the front side of the cylindrical cover.

2. The LED point-light headlight with uniform illumination according to claim 1, characterized in that, The daytime running light area is provided with multiple reflective units. Each reflective unit includes a reflector bowl and a light guide hole located on one side of the reflector bowl. The light guide hole is located on the outside and top of the inner decorative light frame and is used to install LED daytime running light beads.

3. The LED point-light headlight with uniform illumination according to claim 1, characterized in that, The inner side of the main light area is provided with multiple decorative ridges.

4. The LED point-light headlight with uniform illumination according to claim 1, characterized in that, The cylindrical cover has concave arc openings at both ends.

5. The LED point-light headlight with uniform illumination according to claim 1, characterized in that, The depth of the light guide groove gradually decreases from the side near the shroud towards the edge of the main light area.

6. The LED point-light headlight with uniform illumination according to claim 1, characterized in that, The inner surface of the reflector is provided with a honeycomb reflective structure, and the aperture of the honeycomb reflective structure is 0.5-2mm.

7. The LED point-light headlight with uniform illumination according to claim 1, characterized in that, The inner wall of the lampshade is provided with a microprism array at the position corresponding to the main lamp area, and the prism height of the microprism array is 0.1-0.3mm.

8. The LED point-light headlight with uniform illumination according to claim 2, characterized in that, The inner surface of the reflective bowl is coated with an aluminum reflective layer, and the radius of curvature of the reflective bowl is 15-30mm.

9. The LED point-light headlight with uniform illumination according to claim 1, characterized in that, The inner side of the transition frame is provided with an elastic buckle, which forms an interference fit with the outer wall of the inner decorative light frame.

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