A compact projection LED vehicle lamp

Abstract

The utility model relates to a compact projection type LED car light, including base one, still including setting on the upper end of base one half -reflector cover, and half -reflector cover is composed of multiple continuous free surface, and the upper end surface of base one is provided with the locating groove, and the inside of locating groove is provided with the locating seat, and the upper end of locating seat is installed with LED light source, and the left end of base one is provided with mobile assembly, and mobile assembly is installed with the light shield on, and mobile assembly is used for moving to the light shield, and it realizes light regulation, and the half -reflector cover of multiple continuous free surface composition, the novel mobile assembly utilizes the magnetic force to realize the non -contact drive, and there is no mechanical friction, and the service life is long, and there is no noise in operation, and the response speed is fast, and the magnet layout of magnetic pole opposition is adopted to form controllable magnetic field, and the control precision is promoted, and the reset spring is combined with PWM signal regulation, ensures that the light shield moves steadily accurately, realizes stable and reliable accurate intelligent dimming.

Description

Technical Field

[0001] This utility model relates to the field of projection LED vehicle lighting technology, specifically a compact projection LED vehicle lighting. Background Technology

[0002] Projection type refers to the optical structure of the headlight. It uses a precision lens system, usually including an elliptical reflector and a convex lens, to precisely converge, shape, and project the light emitted by the light source, forming a clear, well-defined beam pattern. LED refers to the light source, which uses light-emitting diodes as the light emitters, replacing traditional halogen bulbs or xenon lamps. LEDs have advantages such as high brightness, low energy consumption, long lifespan, fast response speed, and flexible design. Compact refers to the fact that the physical size of the entire headlight unit is designed to be very small. This is due to the small size of the LED light source itself, the relatively concentrated heat that is easy to manage, and the optimization of modern optical design, which allows for less space in the engine compartment while ensuring lighting performance, giving car designers greater freedom.

[0003] Simply put, it is a compact car headlight that uses LEDs as its light source and projects a high-quality beam through a precision lens system.

[0004] Common projection LED headlights typically use a motor-driven gear set or linkage mechanism to move the sunshade when achieving beam adjustment. In the long-term repetitive operation of this type of mechanical transmission structure, physical contact and relative sliding between moving parts are inevitable, resulting in continuous friction. Friction causes the contact surface material to gradually wear down, leading to wear. As the usage time increases, wear accumulates, which may cause problems such as increased transmission clearance, movement stagnation, and decreased positioning accuracy. In severe cases, it may even cause the mechanism to fail, directly affecting the normal operation of the headlight and shortening its service life. At the same time, the operation of the motor and the meshing of the gears will generate mechanical vibration and operating noise, manifested as a noticeable humming sound or the clicking sound of gear meshing, affecting the quietness of the vehicle, especially at night or in quiet environments. Therefore, traditional structures have inherent defects of limited lifespan and noisy operation. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a compact projection LED vehicle light. The moving component is driven by non-contact magnetic force, eliminating friction and wear, resulting in a long lifespan, quiet operation, and rapid response. A controllable magnetic field is formed by magnets with opposing magnetic poles, improving accuracy. Combined with a reset spring and PWM signal control, this ensures smooth and reliable operation of the sunshade, achieving precise and intelligent beam adjustment. This solves the problems of common projection LED vehicle lights that use motors to drive gears or linkages to drive the sunshade, leading to wear and tear due to long-term friction between components, which can cause jamming, decreased accuracy, shortened lifespan, and noise during operation, affecting quietness.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a compact projection LED vehicle light, comprising a base; and a semi-reflector disposed on the upper end of the base, the semi-reflector being composed of multiple continuous free-form surfaces, a positioning groove being provided on the upper end surface of the base, a positioning seat being disposed inside the positioning groove, an LED light source being installed on the upper end of the positioning seat, and a moving component being disposed on the left end of the base. A light shield is installed on the moving component, which is used to move the light shield to achieve light adjustment. The semi-reflective cover, which is composed of multiple continuous free-form surfaces, can efficiently collect, reflect and precisely shape the light emitted by the LED light source, and focus the light to the imaging focal area. The matching structure of the positioning groove and the positioning seat ensures the precise alignment of the LED light source and the optical center of the semi-reflective cover.

[0007] Furthermore, the moving component includes two fixed strong magnets installed on the left end face of the base, a drive coil disposed outside the fixed strong magnets, a limiting rail disposed on the left end face of the base, a slider slidably connected inside the limiting rail, and a movable magnet movably connected to the upper end of the slider. The electromagnetic field generated by the drive coil after being energized is superimposed on the constant magnetic field of the fixed strong magnets, applying a directional pushing or pulling force to the movable magnet, thereby driving the slider to slide along the limiting rail.

[0008] Furthermore, the magnetic poles of the two fixed strong magnets are arranged opposite each other to form a composite magnetic field with concentrated direction and controllable intensity gradient in the area where the moving magnet is located, thereby enhancing the linearity and response accuracy of the driving force.

[0009] Furthermore, the moving component also includes a reset spring connected to the left end face of the base. Multiple reset springs are provided, and the other end of the reset spring is connected to the light shield. The left end face of the moving magnet is connected to the light shield. The reset spring provides a stable reset force and motion damping for the light shield, ensuring that the light shield can reliably return to the preset position after the drive signal disappears.

[0010] Furthermore, the edge contour of the sunshade is precisely designed so that its projection on the imaging focal area formed by the semi-reflector constitutes a cutoff line between light and dark that complies with road lighting regulations. By moving the sunshade through the moving component, the switching between low beam mode and high beam mode can be realized, or the beam blocking area can be dynamically adjusted in adaptive high beam mode.

[0011] Furthermore, the drive coil receives pulse width modulation signals from the vehicle control unit and precisely controls the moving speed, travel distance, and final stopping position of the sunshade by adjusting the magnitude and direction of the current, thereby achieving millisecond-level response beam mode switching and intelligent beam pattern control.

[0012] Furthermore, a base two is provided at the lower end of the base one, and a mounting plate is connected to the left end face of the base two. A lamp cover is installed in the groove of the mounting plate. The base one, the base two and the mounting plate together constitute the main support and sealing structure of the vehicle lamp. The lamp cover and the base are sealed together to form a sealed optical chamber, protecting the internal optical components and electronic components.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. The moving component adopts non-contact magnetic drive, which pushes the sunshade through the electromagnetic effect of coil and magnet. There is no need for gears or linkages. This design is frictionless, wear-free, has a long life, operates quietly, and has a fast response speed. It can effectively avoid jamming and noise, improve the reliability and comfort of the headlights, and support fast beam adjustment and intelligent ADB function. 2. The two fixed, powerful magnets are arranged with their magnetic poles facing each other, which can form a composite magnetic field with concentrated direction and controllable intensity gradient in the area of ​​the moving magnet. This enhances the linearity and control precision of the driving force, making the movement of the light shield smoother and more precise. Together with the return spring, it provides a stable return force and appropriate motion damping for the light shield, ensuring that the light shield can reliably and quickly return to the preset position after the driving signal disappears. It has high stability. By receiving pulse width modulation (PWM) signals, the current of the driving coil can be precisely controlled, thereby accurately regulating the moving speed, stroke and final position of the light shield, realizing intelligent beam mode switching and dynamic beam pattern control. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the disassembled three-dimensional structure of this utility model; Figure 3 This is a partial three-dimensional structural diagram of the present invention; Figure 4 This is a schematic diagram of the bottom three-dimensional structure of this utility model; Figure 5 This is a schematic diagram of the disassembled three-dimensional structure of this utility model.

[0015] In the diagram: 1. Base 1; 2. Semi-reflector; 3. Positioning groove; 4. Positioning seat; 5. LED light source; 6. Fixed strong magnet; 7. Drive coil; 8. Limit rail; 9. Slider; 10. Moving magnet; 11. Light shield; 12. Return spring; 13. Base 2; 14. Mounting plate; 15. Lampshade. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 The compact projection LED vehicle light in this embodiment includes a base 1; it also includes a semi-reflector 2 disposed on the upper end of the base 1, the semi-reflector 2 being composed of multiple continuous free-form surfaces, a positioning groove 3 being provided on the upper end surface of the base 1, a positioning seat 4 being disposed inside the positioning groove 3, an LED light source 5 being installed on the upper end of the positioning seat 4, and a moving component being disposed on the left end of the base 1.

[0018] In this embodiment, the moving component adopts non-contact magnetic drive, which is frictionless, wear-free, long-lasting, low-noise, and fast-response. It supports rapid adjustment and intelligent ADB. A controllable magnetic field is formed by the magnetic poles facing each other, which improves the driving accuracy. The reset spring 12 ensures smooth and reliable operation. Combined with the PWM signal, the position of the light shield 11 is precisely controlled to achieve highly stable and intelligent beam control.

[0019] Please see Figures 1-5 In this embodiment, to achieve magnetic propulsion of the light shield 11 without gears or connecting rods, resulting in no wear, long lifespan, quiet operation, and fast response, enabling rapid light adjustment and intelligent anti-glare, the light shield 11 is mounted on the moving component. The moving component is used to move the light shield 11 to achieve light adjustment. The semi-reflective cover 2, composed of multiple continuous free-form surfaces, can efficiently collect, multi-level reflect, and precisely shape the light emitted by the LED light source 5, converging the light to the imaging focal area. The cooperative structure of the positioning groove 3 and the positioning seat 4 ensures the precise alignment of the optical center of the LED light source 5 and the semi-reflective cover 2.

[0020] In this embodiment, base 1 is used to support and fix the main internal components of the vehicle lamp, providing support for the overall structure. The semi-reflector 2 is composed of multiple continuous free-form surfaces, which can efficiently collect and accurately reflect the light emitted by the LED light source 5, converging it to the imaging focal area to improve the brightness and uniformity of the illumination. The positioning groove 3 cooperates with the positioning seat 4 to ensure the precise installation position of the LED light source 5, achieving accurate alignment between the light source and the optical components. The moving component drives the light shield 11 to move through magnetic drive, without mechanical contact, achieving fast and quiet beam adjustment. The light shield 11 is used to block part of the light, forming a light cutoff line that complies with regulations, switching between low and high beams or realizing intelligent anti-glare function. Base 2 13, mounting plate 14 and lamp cover 15 together constitute the external structure, providing installation interface and protecting internal components.

[0021] It should be noted that the moving component includes two fixed strong magnets 6 installed on the left end face of the base 1, a drive coil 7 disposed outside the fixed strong magnets 6, a limiting rail 8 disposed on the left end face of the base 1, a slider 9 slidably connected inside the limiting rail 8, and a movable magnet 10 movably connected to the upper end of the slider 9. The electromagnetic field generated by the drive coil 7 after being energized is superimposed on the constant magnetic field of the fixed strong magnets 6, applying a directional pushing or pulling force to the movable magnet 10, thereby driving the slider 9 to slide along the limiting rail 8. The magnetic poles of the two fixed strong magnets 6 are arranged in opposite directions to form a composite magnetic field with concentrated direction and controllable intensity gradient in the area where the movable magnet 10 is located, enhancing the linearity and response accuracy of the driving force. The fixed strong magnets 6 provide a stable and high-intensity background magnetic field. The magnetic field is the basis for generating driving magnetic force. The relative magnetic pole directions make the magnetic field distribution more concentrated, improving the controllability and linearity of the force. After the driving coil 7 is energized, it generates a variable electromagnetic field, which is superimposed on the magnetic field of the fixed magnet to form a directional pushing or pulling force that drives the moving magnet 10, realizing the conversion of electrical energy into mechanical motion. The limiting rail 8 is used to constrain the movement path of the slider 9, ensuring that the movement is in a straight line, preventing deviation or shaking, and ensuring the accuracy and stability of the movement of the light shield 11. The slider 9, as a transmission medium, transmits the magnetic force received by the moving magnet 10 to the light shield 11, and slides within the limiting rail 8 to achieve smooth guidance. The moving magnet 10 receives the force from the composite magnetic field, converting the electromagnetic force into mechanical motion, which directly drives the slider 9 and the light shield 11 to produce displacement.

[0022] Please see Figures 1-5In this embodiment, to achieve more concentrated magnetic force and more precise control, a spring is added to assist in reset. Furthermore, the current is finely adjusted using a PWM signal, enabling precise control of the movement of the light shield 11. The movement is stable and reliable. The moving component in this embodiment also includes a reset spring 12 connected to the left end face of the base 1. Multiple reset springs 12 are provided, with the other end of each spring connected to the light shield 11. The left end face of the moving magnet 10 is connected to the light shield 11. The reset spring 12 provides a stable reset force and motion damping for the light shield 11, ensuring that the light shield 11... After the drive signal disappears, it can reliably return to the preset position. The edge contour of the sunshade 11 is precisely designed, and its projection on the imaging focal area formed by the semi-reflector 2 constitutes a cut-off line that complies with road lighting regulations. By moving the sunshade 11, the low beam mode and high beam mode can be switched, or the beam blocking area can be dynamically adjusted in adaptive high beam mode. The drive coil 7 receives the pulse width modulation signal from the vehicle control unit and precisely controls the moving speed, stroke and final stopping position of the sunshade 11 by adjusting the magnitude and direction of the current.

[0023] In this embodiment, the reset spring 12 provides the elastic force required for the reset of the light shield 11, ensuring that the light shield 11 can quickly and accurately return to its initial position after the drive signal stops. At the same time, it plays a buffering role, suppressing vibration and impact during movement and improving the smoothness of the movement. The moving magnet 10 transmits electromagnetic force to the light shield 11, realizing the output connection of the force. It is the key switching point for the magnetic drive to act on the moving parts. The light shield 11 is used to block the light in a specific area. Its edge shape determines the shape of the light beam cutoff line. By moving it, the low beam and high beam modes can be switched, or it can dynamically avoid oncoming vehicles in adaptive lighting to prevent glare. The drive coil 7 adjusts the current magnitude and direction according to the pulse width modulation signal to control the strength and direction of the electromagnetic force, thereby precisely managing the moving speed, stroke and final position of the light shield 11, and realizing fast and accurate light pattern control.

[0024] It should be noted that a base 13 is provided at the lower end of the base 1, and a mounting plate 14 is connected to the left end face of the base 13. A lamp cover 15 is installed in the groove of the mounting plate 14. The base 1, the base 13 and the mounting plate 14 together constitute the main support and sealing structure of the vehicle lamp. The lamp cover 15 and the base are sealed together to form a sealed optical chamber to protect the internal optical components and electronic components.

[0025] The working principle of the above embodiments is as follows: In use, the LED light source 5 is powered on and emits light, which shines onto the semi-reflector 2, which is composed of multiple continuous free-form surfaces. The semi-reflector 2 efficiently collects, reflects, and precisely shapes the light, focusing the beam onto the imaging focal area. The positioning seat 4 and positioning groove 3 ensure that the LED light source 5 is precisely positioned and aligned with the optical center of the semi-reflector 2, forming a high-quality light spot. When the beam needs to be adjusted, the control unit outputs a pulse width modulation signal to the drive coil 7. After the drive coil 7 is powered on, it generates a changing electromagnetic field. This electromagnetic field is superimposed on the constant magnetic field formed by the two fixed strong magnets 6 with opposite magnetic poles, generating a light spot in the area where the moving magnet 10 is located. A directional and controllable composite magnetic field is formed, which applies a directional pushing or pulling force to the movable magnet 10. The movable magnet 10 drives the slider 9 to slide within the limiting rail 8. The slider 9 pushes the light shield 11 to move, and the projection of the edge of the light shield 11 in the focal area changes accordingly, realizing the switching between low beam and high beam or dynamically blocking part of the beam to achieve an intelligent anti-glare effect. During the movement of the light shield 11, the reset spring 12 provides reset force and damping to ensure smooth movement. After the signal stops, the light shield 11 reliably returns to its original position. The base 1, base 2 13, mounting plate 14 and lamp cover 15 together constitute a stable and sealed main structure to protect the normal operation of the internal components.

[0026] It should be noted that the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A compact projection type LED vehicle lamp comprising a base one (1); characterized in that: It also includes a semi-reflective shield (2) set on the upper end of the base (1). The semi-reflective shield (2) is composed of multiple continuous free-form surfaces. A positioning groove (3) is opened on the upper end surface of the base (1). A positioning seat (4) is set inside the positioning groove (3). An LED light source (5) is installed on the upper end of the positioning seat (4). A moving component is set on the left end of the base (1). A light shield (11) is installed on the moving component. The moving component is used to move the light shield (11) to the left or right. The semi-reflective cover (2) is used to collect and reflect the light emitted by the LED light source (5) and focus the light to the imaging focal area. The positioning groove (3) and the positioning seat (4) are connected in a cooperative manner.

2. A compact projection LED vehicle lamp according to claim 1, characterized in that: The moving component includes two fixed strong magnets (6) installed on the left end face of the base (1), a drive coil (7) disposed outside the fixed strong magnets (6), a limiting rail (8) disposed on the left end face of the base (1), a slider (9) slidably connected inside the limiting rail (8), and a moving magnet (10) movably connected to the upper end of the slider (9). The electromagnetic field generated by the drive coil (7) after being energized is superimposed on the constant magnetic field of the fixed strong magnet (6), which applies a directional pushing or pulling force to the moving magnet (10), thereby driving the slider (9) to slide along the limiting rail (8).

3. A compact projection LED vehicle lamp according to claim 2, characterized in that: The magnetic poles of two fixed strong magnets (6) are arranged opposite each other to form a composite magnetic field with concentrated direction and controllable intensity gradient in the area where the movable magnet (10) is located.

4. The compact projection LED vehicle lamp of claim 2, wherein: The moving assembly also includes a reset spring (12) connected to the left end face of the base (1). Multiple reset springs (12) are provided. The other end of the reset spring (12) is connected to the light shield (11). The left end face of the moving magnet (10) is connected to the light shield (11).

5. A compact projection LED vehicle lamp according to claim 4, characterized in that: The light shield (11) is designed to adapt to the light structure. By moving the light shield (11) through the moving component, the light shield (11) can be moved to switch between low beam mode and high beam mode, or dynamically adjust the beam shielding area in adaptive high beam mode.

6. A compact projection LED vehicle lamp according to claim 5, characterized in that: The drive coil (7) receives a pulse width modulation signal from the vehicle control unit. When the current of the drive coil (7) increases, the speed of the sunshade (11) increases, and when the current of the drive coil (7) decreases, the speed of the sunshade (11) decreases.

7. The compact projection LED vehicle lamp of claim 4, wherein: A base 2 (13) is provided at the lower end of the base 1 (1), and a mounting plate (14) is connected to the left end face of the base 2 (13). A lampshade (15) is installed in the groove of the mounting plate (14). Base 1 (1), base 2 (13) and mounting plate (14) together constitute the main support and sealing structure of the vehicle lamp, and lamp cover (15) and base seal together to form a sealed optical chamber.

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