An electric vehicle headlight reflector structure

Abstract

This utility model provides an electric vehicle headlight illumination reflection structure, including an LED bead and a circuit board. The LED bead is electrically connected to the circuit board. The structure also includes a reflector cup connected to the circuit board. The LED bead is located inside the reflector cup. A reflective parabolic surface is provided on the inner wall of the reflector cup. The LED bead is located at the focal point of the reflective parabolic surface. The light emitted by the LED bead is reflected by the reflective parabolic surface and then discharged as parallel light from the opening of the reflector cup, thereby achieving more effective collection of the light emitted by the LED light source and reducing energy loss caused by light divergence.

Description

Technical Field

[0001] This utility model relates to vehicle lamp structure, and more particularly, to an electric vehicle lamp illumination reflection structure. Background Technology

[0002] Currently, Chinese utility model patent CN215216044U discloses a vehicle lamp lighting structure and a vehicle lamp. This vehicle lamp lighting structure includes a light source module and a collecting lens. The light source module emits a light beam; the collecting lens includes a low-beam lens for collecting the light beam and emitting low beam rays, a first high-beam lens for collecting the light beam and emitting a first high beam ray, and at least two second high-beam lenses for collecting the light beam and emitting a second high beam ray. The illumination distance of the first high beam ray emitted by the first high beam lens is greater than the illumination distance of the second high beam ray emitted by the second high beam lenses. By setting one low-beam emission area and at least three high-beam emission areas in the collecting lens, this vehicle lamp lighting structure aims to reduce the crossover effect between low beam and high beam rays, enhance the reinforcement of the high beam ray, and thus improve the effective illumination distance and illumination angle of the high beam ray. Overall, this vehicle lamp improves the illumination effect of both low and high beams.

[0003] In existing technologies, LED automotive headlights and laser headlights are the mainstream configurations and future development trends for automotive headlights. Traditional LED headlights typically use low beam components, high beam components, and solenoid valves to switch between high and low beams. However, because the solenoid valve needs to accommodate both high and low beam patterns, the high beam's focusing ability is insufficient, resulting in poor high beam illumination. This leads to a narrow high beam illumination angle and a short effective lighting distance for traditional LED headlights. Therefore, existing technologies need to provide a headlight with a wider high beam illumination range.

[0004] For automotive headlights using LEDs as the light source, such as the LED high-beam module mentioned in the aforementioned patent, they typically include an LED emitter and a small lens for focusing the light. However, the light emitted by the LED emitter itself has a certain divergence angle, meaning the light is emitted in all directions rather than being completely concentrated in a single direction. When there is a certain distance between the LED emitter and the small lens used to collect and collimate the light, due to the inherent divergence characteristics of the LED emitter's light, especially those rays emitted along a direction perpendicular to the optical axis of the small lens, the light will diverge in directions such as up and down before reaching the surface of the small lens. This diverged light cannot be effectively collected and utilized by the small lens, resulting in a loss of light energy. This light loss directly reduces the light utilization rate of the LED high-beam module, thus affecting the brightness and effective illumination distance of the high beam, and failing to fully utilize the potential performance of the LED light source. Therefore, how to more effectively collect the light emitted by the LED emitter and reduce energy loss caused by light divergence is a current technical challenge in the field of automotive lighting. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an electric vehicle headlight reflection structure to more effectively collect the light emitted by the LED light source and reduce energy loss caused by light dispersion.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: an electric vehicle headlight illumination reflection structure, including a lamp bead and a circuit board, wherein the lamp bead is electrically connected to the circuit board, and a reflector cup connected to the circuit board is also included. The lamp bead is located inside the reflector cup, and a reflective parabolic surface is provided on the inner wall of the reflector cup. The lamp bead is located at the focal point of the reflective parabolic surface, and the light emitted by the lamp bead is reflected by the reflective parabolic surface and then led out as parallel light from the opening of the reflector cup.

[0007] To achieve the above technical solution, the LED is precisely positioned at the focal point of the parabolic reflector inside the reflector cup. When the LED emits light, this light is reflected by the parabolic reflector and exits as parallel light from the opening of the reflector cup. The remaining light, which is not reflected by the parabolic reflector, exits directly from the opening of the reflector cup, effectively avoiding light scattering and loss. By placing a matching high-beam lens with wide-angle receiving capability closely at the opening of the reflector cup, all light can pass through the high-beam lens, significantly improving light focusing ability and utilization efficiency.

[0008] In a preferred embodiment of this utility model, an extension plate is fixedly connected to the outer wall of the reflector cup, and the reflector cup is fixed to the circuit board through the extension plate.

[0009] To achieve the above technical solution, the reflector is securely fixed to the circuit board via an extension plate fixedly connected to its outer wall. This connection method ensures precise and robust positioning between the reflector and the circuit board, effectively improving the mechanical stability and reliability of the entire vehicle lighting reflection structure under vibration and shock environments. Simultaneously, it simplifies the component assembly process, facilitating mass production and reducing manufacturing costs.

[0010] As a preferred embodiment of this utility model, a holding plate is connected to the side of the reflector opposite to the circuit board, and the holding plate is close to the opening of the reflector and extends away from the reflector.

[0011] The aforementioned technical solution incorporates a grip plate that facilitates user handling during the installation, removal, or maintenance of the headlights. This effectively prevents direct contact with the reflector or other optical components, thus protecting the optical performance from fingerprints, stains, or mechanical damage.

[0012] As a preferred embodiment of this utility model, it also includes a heat sink, on which a supporting plane is formed, the circuit board is fixed on the supporting plane, a limiting protrusion is fixedly connected on the supporting plane, a first limiting hole is formed on the circuit board, a second limiting hole is formed on the extension plate, and the limiting protrusion passes through the first limiting hole and the second limiting hole.

[0013] To achieve the above technical solution, firstly, the heat sink provides a stable mounting base for the circuit board and ensures the thermal stability of the vehicle headlights through heat dissipation. Secondly, the cooperation between the limiting protrusion and the first and second limiting holes not only ensures the precise alignment of the circuit board and the heat sink, but more importantly, by having the limiting protrusion pass through the second limiting hole on the extension plate, it achieves coordinated and precise positioning and secure connection between the reflector, the circuit board, and the heat sink.

[0014] As a preferred embodiment of this utility model, the circuit board is provided with a first adjustment groove, the extension plate is provided with a second adjustment groove, and an adjustment protrusion is fixedly connected to the support plane. The adjustment protrusion passes through the first adjustment groove and the second adjustment groove, and the limiting protrusion and the adjustment protrusion are respectively located on both sides of the reflector.

[0015] The above technical solution allows for fine-tuning of the entire optical module, composed of the reflector, LED chips, and circuit board, by adjusting the sliding of the protruding post within the first and second adjustment slots. This alters the emission angle and direction of the light. This enables precise optical axis adjustment of the headlight after installation to adapt to different installation requirements and vehicle driving conditions, ensuring that the light is projected to the optimal position. This significantly improves the adaptability, illumination accuracy, and ultimately, the user experience of the headlight.

[0016] In a preferred embodiment of this utility model, the heat sink is provided with heat dissipation holes, which are connected to the supporting plane. The circuit board extends through the heat dissipation holes, and multiple heat sinks are fixedly connected to the outer wall of the heat sink.

[0017] To achieve the above technical solution, the connection between the heat dissipation holes and the circuit board, along with the design of the heat sink, together construct an optimized heat dissipation path, which can quickly and effectively conduct and dissipate the heat generated by the circuit board to the surrounding environment, thereby reducing the operating temperature of the circuit board and LED chips.

[0018] As a preferred embodiment of this utility model, the end of the reflector cup is provided with a sliding groove, the grip plate is slidably connected in the sliding groove, the grip plate slides along its own length direction, a first magnet is provided on the inner wall of the sliding groove, a second magnet is connected to the grip plate, a plurality of second magnets are arranged along the length direction of the grip plate, and the first magnet and the second magnet attract each other.

[0019] The above technical solution achieves the desired effects of adjustable grip, stable positioning, and convenient operation. Through the sliding connection between the groove and the grip, the user can adjust the extension / retraction position of the grip as needed. The mutual attraction between the first magnet and multiple second magnets provides engagement and fixing points at different positions on the grip, ensuring that the adjusted grip can be stably positioned and will not slide arbitrarily. When the grip is pressed down, it partially enters the opening of the reflector cup, acting as an internal support, thus effectively preventing damage to the reflective parabolic surface of the reflector cup from external impacts or friction during transportation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 A schematic diagram illustrating the structure of the heat dissipation holes; Figure 3 This is a structural diagram illustrating the supporting plane; Figure 4 To illustrate the structure of the circuit board; Figure 5 To illustrate the structure of the reflector; Figure 6 A schematic diagram illustrating the exploded structure of the reflector.

[0021] Reference numerals: 1. LED bead; 2. Circuit board; 3. Heat sink; 4. Receiving groove; 5. Supporting plane; 6. Limiting protrusion; 7. Reflector cup; 8. Reflecting parabolic surface; 9. Extension plate; 10. First limiting hole; 11. Second limiting hole; 12. First adjustment groove; 13. Second adjustment groove; 14. Adjusting protrusion; 15. Heat dissipation hole; 16. Heat sink; 17. Slide groove; 18. Protrusion; 19. First magnet; 20. Second magnet; 21. Grip plate. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0023] An electric vehicle headlight illumination reflector structure includes an LED chip 1, a circuit board 2, and a heat sink 3. A receiving groove 4 is formed in the heat sink 3, and a horizontally arranged support plane 5 is formed on the bottom wall of the receiving groove 4. The circuit board 2 is fixed to the support plane 5, and a limiting protrusion 6 is integrally connected to the support plane 5. A first limiting hole 10 is formed in the circuit board 2. A reflector cup 7 is provided on the circuit board 2, and a reflective parabolic surface 8 is provided on the inner wall of the reflector cup 7. The reflective parabolic surface 8 is a mirror surface. The reflective parabolic surface 8 is an aluminum-plated mirror surface. The heat sink 3 is made of aluminum alloy.

[0024] An extension plate 9 is integrally connected to the outer wall of the reflector cup 7. A second limiting hole 11 is provided on the extension plate 9.

[0025] The limiting protrusion 6 passes through the first limiting hole 10 and the second limiting hole 11.

[0026] LED 1 is electrically connected to circuit board 2 and is located inside reflector cup 7. LED 1 is located at the focal point of reflective parabolic surface 8. The light emitted by LED 1 is reflected by reflective parabolic surface 8 and is then directed out as parallel light from the opening of reflector cup 7.

[0027] A first adjustment groove 12 is formed on the circuit board 2, a second adjustment groove 13 is formed on the extension plate 9, and an adjustment protrusion 14 is integrally connected to the support plane 5. The adjustment protrusion 14 passes through the first adjustment groove 12 and the second adjustment groove 13. The limiting protrusion 6 and the adjustment protrusion 14 are located on both sides of the reflector cup 7. Both the limiting protrusion 6 and the adjustment protrusion 14 are frustoconical.

[0028] By threading bolts through the extension plate 9 and circuit board 2 and then connecting them to the support plane 5, the head of the bolt is pressed against the upper surface of the extension plate 9, thus fixing the extension plate 9 and circuit board 2 onto the heat sink 3.

[0029] The heat sink 3 has heat dissipation holes 15, which are connected to the support plane 5. The circuit board 2 passes through the heat dissipation holes 15, and multiple heat sinks 16 are integrally connected to the outer wall of the heat sink 3.

[0030] A groove 17 is provided at the opening of the reflector cup 7. The grip plate 21 is slidably connected in the groove 17. The grip plate 21 slides along its own length. A protrusion 18 is integrally connected to the inner wall of the groove 17 to prevent the grip plate 21 from easily coming off the side of the groove 17.

[0031] A first magnet 19 is fixedly connected to the inner wall of the slide 17, and the two first magnets 19 are arranged opposite each other. A second magnet 20 is fixedly connected to the outer wall of the grip plate 21, and the two second magnets 20 are arranged along the length of the grip plate 21. The first magnets 19 and the second magnets 20 attract each other.

[0032] Both the first magnet 19 and the second magnet 20 are magnets.

[0033] LED 1 is electrically connected to circuit board 2 and precisely positioned at the focal point of the parabolic reflective surface 8 inside reflector cup 7. When LED 1 emits light, its light is reflected by the reflective surface 8 and then directed out from the opening of reflector cup 7 as parallel light. This optical layout significantly improves the light energy focusing ability and utilization efficiency.

[0034] The heat sink 3 has a supporting plane 5 inside, on which the circuit board 2 is firmly fixed. Multiple heat sinks 16 are integrated on the outer wall of the heat sink 3, and heat dissipation holes 15 penetrate and connect to the supporting plane 5, allowing the circuit board 2 to pass through the heat dissipation holes 15, thus creating an efficient heat dissipation path, ensuring the thermal stability of the LED bead 1 and the circuit board 2 and extending their service life.

[0035] The limiting protrusion 6 integrated on the supporting plane 5 passes sequentially through the first limiting hole 10 on the circuit board 2 and the second limiting hole 11 on the extension plate 9, thereby achieving precise coordinated positioning among the reflector cup 7, the circuit board 2, and the heat sink 3, greatly enhancing the mechanical strength and shock resistance of the overall assembly. Furthermore, the adjusting protrusion 14 integrated on the supporting plane 5 passes through the first adjusting groove 12 on the circuit board 2 and the second adjusting groove 13 on the extension plate 9, with the limiting protrusion 6 and the adjusting protrusion 14 located on opposite sides of the reflector cup 7. This allows for fine-tuning of the entire optical module, precisely adjusting the light emission angle and direction, ensuring the accuracy of the vehicle light beam axis, and improving the product's adaptability and lighting precision.

[0036] A square-section groove 17 is provided at the opening of the reflector cup 7, and the grip plate 21 is slidably connected to it and extends and retracts along its length. To ensure stable positioning, a first magnet 19 is fixedly connected to the inner wall of the groove 17, while two second magnets 20 are fixedly connected to the outer wall of the grip plate 21, arranged along the length of the grip plate 21, and the first magnet 19 and the second magnets 20 attract each other. The grip plate 21 is designed to facilitate the user's grip when installing, disassembling, adjusting, or maintaining the headlight. It effectively avoids direct contact with the reflector cup 7 or other optical components, thereby preventing fingerprints, stains, or mechanical damage from adversely affecting optical performance. This magnetic sliding structure allows the user to easily adjust the position of the grip plate 21 and fix it stably. More importantly, when pressed down, the grip plate 21 can partially enter the opening of the reflector cup 7, thus acting as an internal support or buffer during transportation, effectively preventing damage to the inner wall of the reflector cup 7 from external impacts or friction.

[0037] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. An electric vehicle headlight illumination reflection structure, comprising an LED bead (1) and a circuit board (2), wherein the LED bead (1) is electrically connected to the circuit board (2), characterized in that: Also includes A reflector cup (7) is connected to a circuit board (2). The lamp bead (1) is located inside the reflector cup (7). A reflective parabolic surface (8) is provided on the inner wall of the reflector cup (7). The lamp bead (1) is located at the focal point of the reflective parabolic surface (8). The light emitted by the lamp bead (1) is reflected by the reflective parabolic surface (8) and then led out as parallel light from the opening of the reflector cup (7).

2. The electric vehicle headlight illumination reflection structure according to claim 1, characterized in that: An extension plate (9) is fixedly connected to the outer wall of the reflector cup (7), and the reflector cup (7) is fixed to the circuit board (2) through the extension plate (9).

3. The electric vehicle headlight illumination reflection structure according to claim 1, characterized in that: The reflector cup (7) has a grip plate (21) connected to the side facing away from the circuit board (2). The grip plate (21) is close to the opening of the reflector cup (7) and extends away from the reflector cup (7).

4. The electric vehicle headlight illumination reflection structure according to claim 2, characterized in that: It also includes a heat sink (3), on which a support plane (5) is provided. The circuit board (2) is fixed on the support plane (5). A limiting protrusion (6) is fixedly connected on the support plane (5). A first limiting hole (10) is provided on the circuit board (2). A second limiting hole (11) is provided on the extension plate (9). The limiting protrusion (6) passes through the first limiting hole (10) and the second limiting hole (11).

5. The electric vehicle headlight illumination reflection structure according to claim 4, characterized in that: The circuit board (2) has a first adjustment groove (12), the extension plate (9) has a second adjustment groove (13), and the support plane (5) has an adjustment protrusion (14) fixedly connected to it. The adjustment protrusion (14) passes through the first adjustment groove (12) and the second adjustment groove (13). The limiting protrusion (6) and the adjustment protrusion (14) are located on both sides of the reflector (7).

6. The electric vehicle headlight illumination reflection structure according to claim 4, characterized in that: The heat sink (3) has heat dissipation holes (15) that are connected to the support plane (5). The circuit board (2) extends out of the heat dissipation holes (15). Multiple heat sinks (16) are fixedly connected to the outer wall of the heat sink (3).

7. The electric vehicle headlight illumination reflection structure according to claim 3, characterized in that: The reflector cup (7) has a groove (17) at its end. The grip plate (21) is slidably connected in the groove (17). The grip plate (21) slides along its own length direction. A first magnet (19) is provided on the inner wall of the groove (17). A second magnet (20) is connected to the grip plate (21). Multiple second magnets (20) are arranged along the length direction of the grip plate (21). The first magnet (19) and the second magnet (20) attract each other.

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