White laser automobile auxiliary lamp
By combining white laser light sources and LED light sources, and optimizing optical components and driving circuits, the problem of insufficient illumination in existing automotive headlights under poor lighting conditions has been solved, achieving a longer visibility range and more uniform illumination, thereby improving driving safety.
Patent Information
- Application Number
- CN202520526276.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Existing automotive headlights have limited illumination range and low brightness in poor lighting conditions, failing to meet the lighting needs of drivers in certain environments.
It combines white laser light source and LED light source, uses optical components for light distribution, and a driving circuit to dynamically adjust the brightness and distribution. Combined with reflectors and lenses, it optimizes the beam to form a specific light pattern.
It improves visibility and lighting uniformity at night and in inclement weather, enhances high beam illumination, and improves driving safety.
Smart Images
Figure CN223768736U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle auxiliary lighting technology, and in particular to a white laser automotive auxiliary light. Background Technology
[0002] Currently, the main types of car headlights on the market are halogen lamps, xenon lamps, and LED lamps. Most of them are designed for urban road lighting and have the drawbacks of limited illumination range and low brightness, which cannot meet the lighting needs of drivers in certain poor lighting conditions.
[0003] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0004] This invention provides a white laser automotive auxiliary light, thereby effectively solving the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a white laser automotive auxiliary light, comprising:
[0006] The headlight housing contains an LED light source and a white laser light source.
[0007] An optical component that distributes light from the LED light source and the white laser light source so that the light from the LED light source and the white laser light source shines in front of the vehicle headlight;
[0008] A drive board is disposed inside the headlight housing. The drive board is provided with a drive circuit, which is electrically connected to and controls the LED light source and the white laser light source.
[0009] Furthermore, the LED light source includes a PCB board, on which a plurality of LEDs are disposed, and the plurality of LEDs are arranged on the PCB board.
[0010] Furthermore, the PCB board is disposed at the bottom of the headlight housing, and a plurality of LED lights are disposed at the top of the PCB board and illuminate upward;
[0011] The optical component includes a reflector with a plurality of reflector bowls, each of which corresponds to an LED light, reflecting the light emitted by the corresponding LED light to the front of the headlight.
[0012] Furthermore, the white laser light source includes a white laser module, which is a reflective light source, and the white laser module emits laser light in front of the vehicle headlights.
[0013] Furthermore, the optical component includes an optical lens, which is disposed on the laser path of the white laser module to shape the laser beam.
[0014] Furthermore, several of the LED lights are symmetrically arranged about the white laser module, a receiving groove is provided in the middle of the reflector, and the optical lens is disposed in the receiving groove.
[0015] Furthermore, the drive board is located at the top inside the headlight housing, and the drive circuit includes a reverse connection protection circuit, an MCU and temperature sampling control circuit, a white laser light source constant current drive circuit, and a dual-channel LED constant current drive circuit.
[0016] Furthermore, the headlight housing has an outer lamp cover in front of the headlight.
[0017] Furthermore, the headlight housing includes an upper housing and a lower housing, with a waterproof gasket between the upper housing and the lower housing, and the lower housing has a plurality of heat dissipation grooves arranged in parallel.
[0018] The beneficial effects of this invention are as follows: By combining LED and white laser light sources, the brightness of the white laser light source far exceeds that of the LED, providing a longer visibility range and improving driving safety at night and in adverse weather conditions. Through reasonable light distribution using optical components, the LED and white laser light sources complement each other, ensuring uniform illumination in the low beam area while enhancing high beam illumination. The drive circuit can dynamically adjust the brightness and distribution of the LED and laser light sources according to different operating conditions, greatly improving driving safety in poor lighting conditions. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 The structural diagram of this utility model conceals the upper shell;
[0021] Figure 2 for Figure 1 A sectional view;
[0022] Figure 3 This is a schematic diagram of the structure of this utility model;
[0023] Figure 4 This is a front view of the bottom of the lower housing;
[0024] Figure 5 Circuit topology diagram to prevent reverse connection;
[0025] Figure 6 This is a topology diagram of the MCU and temperature sampling control circuit.
[0026] Figure 7 This is a topology diagram of a constant current drive circuit for a white laser source.
[0027] Figure 8 This is a topology diagram of a dual-channel LED constant current drive circuit. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] Example 1:
[0030] like Figures 1 to 4 As shown: A white laser automotive auxiliary light, comprising:
[0031] The headlight housing contains an LED light source and a white laser light source 4;
[0032] The optical component distributes the light from the LED light source and the white laser light source 4 so that the light from the LED light source and the white laser light source 4 shines in front of the headlight.
[0033] The drive board 6 is located inside the headlight housing. The drive board 6 is equipped with a drive circuit, which is electrically connected to the LED light source and the white laser light source 4 to control them.
[0034] By combining LED light sources and white laser light source 4, the brightness of the white laser light source 4 far exceeds that of the LED, providing a longer visibility range and improving driving safety at night and in adverse weather conditions. Through optimized light distribution via optical components, the LED light source and white laser light source 4 complement each other, ensuring uniform illumination in the low beam area while enhancing high beam capability. The drive circuit can dynamically adjust the brightness and distribution of the LED and laser light sources according to different operating conditions, significantly improving driving safety in poor lighting conditions.
[0035] In this embodiment, the LED light source includes a PCB board 11, on which a plurality of LEDs are disposed. The plurality of LEDs are arranged on the PCB board 11, comprising a total of 6 2-chip LEDs, with a total luminous flux of approximately 4000 lm.
[0036] The LED lights are mounted on PCB board 11 and shine upwards, allowing the light to be redirected through the reflection system to avoid direct glare and improve light efficiency. The LED light source is mainly used to provide basic lighting, meet the low beam requirements, and ensure uniform illumination in the front area of the vehicle. By arranging several LED lights, a more uniform light distribution can be achieved.
[0037] The PCB board 11 is located at the bottom of the headlight housing, and several LED lights are located at the top of the PCB board 11 and illuminate upwards.
[0038] The optical component includes a reflector 2, on which several reflector bowls are provided. Each reflector bowl corresponds to an LED light, reflecting the light irradiated by the corresponding LED light to the front of the headlight.
[0039] The reflector bowl reflects the light beams from six 2-chip LED light sources to form a specific auxiliary high beam pattern. The reflector bowl is made of PC with aluminum coating and has a reflectivity of 80%.
[0040] The reflector bowl on reflector 2 distributes light independently to each LED, reducing light loss and enhancing the directionality and brightness of the light. By precisely designing the curved shape of the reflector bowl, the light spot shape can be optimized, making the light more uniform and clear in both low beam and high beam modes.
[0041] In this embodiment, the white laser light source 4 includes a white laser module, which is a reflective light source that emits laser light in front of the vehicle headlights.
[0042] Traditional LED or xenon headlights have limited high-beam range, while the white laser light source 4 can achieve a longer beam projection, improving nighttime driving safety. The light intensity of white laser far exceeds that of LEDs, providing higher brightness with the same power consumption, making it suitable for low-light environments such as highways and mountainous areas. This module uses a technology that converts the blue light emitted from a blue laser tube into white light through a high-performance phosphor. The emitted white light luminous flux is 430lm. The reflective design in the white laser module ensures that even if the phosphor detaches, there is no risk of high-energy blue light being emitted directly, ensuring the safety of the laser headlights during use.
[0043] As a preferred embodiment of the above, the optical component includes an optical lens 3, which is disposed on the laser path of the white laser module to shape the laser beam.
[0044] The laser beam is shaped by lens system 3, resulting in a more uniform beam, fewer focal points, and reduced glare. Optical lens 3 is used to shape the laser beam and primarily supplements the illumination distance of auxiliary long-range beams. Lens 3 is made of PMMA with a refractive index of 1.492 and a light transmittance of 90%.
[0045] As a preferred embodiment of the above, a plurality of LED lights are symmetrically arranged about the white laser module, a receiving groove is provided in the middle of the reflector 2, and an optical lens 3 is disposed in the receiving groove.
[0046] The LED lights are symmetrically distributed around the white laser module, resulting in more uniform light coverage and reducing uneven brightness and shadow areas. The LEDs provide broad basic lighting, especially suitable for low-speed driving or urban roads, preventing the laser beam from being too concentrated and affecting visual comfort. A recessed slot in the center of the reflector 2 allows the white laser module to be embedded without affecting the overall optical structure and reducing interference from the laser module to other optical components. The centrally positioned white laser module ensures that the high-beam beam propagates along the optimal illumination path, improving long-distance lighting performance.
[0047] The drive board 6 is located at the top inside the headlight housing. The drive circuit includes a reverse connection protection circuit, an MCU and temperature sampling control circuit, a white laser light source 4 constant current drive circuit, and a dual-channel LED constant current drive circuit.
[0048] As a preferred embodiment of the above, the headlight housing is provided with an outer lamp cover 1 in front of the headlight.
[0049] The outer lamp cover 1 can protect the internal optical components from dust, mud, and gravel. High light transmittance materials (such as PC (polycarbonate) and PMMA (acrylic)) can be used to ensure maximum light flux output. An anti-glare coating can be added to reduce glare and improve driving safety. An optional surface microlens 3 structure can optimize beam distribution and improve uniformity.
[0050] The headlight housing includes an upper housing 7 and a lower housing 9. A waterproof rubber ring 8 is provided between the upper housing 7 and the lower housing 9. The lower housing 9 is provided with several heat dissipation grooves 91, which are arranged in parallel.
[0051] Example 2:
[0052] This embodiment discloses a white laser automotive auxiliary light. The upper and lower housings of the white laser automotive auxiliary light have a unique shape and structure, are symmetrical, and have multiple heat dissipation grooves, which help to increase the heat dissipation area, facilitate airflow to carry away the heat of the lamp, and enhance the heat dissipation performance of the lamp.
[0053] The LED light source is fixed to the LED PCB board, which is then directly secured to the reflector with screws. They are then fixed together to the lower housing. The white laser light source module is fixed to the white laser light source module positioning base with screws, and the lens is fixed to the limiting groove at the front end of the white laser light source module positioning base. These components are also fixed together to the lower housing. This design, which directly positions the light source and optical components, reduces assembly errors and helps ensure consistent light patterns.
[0054] The driver board is fixed to the upper housing with screws, which can conduct the heat generated by the components on the driver board to the upper housing, separating it from the heat dissipation system of the LED light source and laser light source on the lower housing. This facilitates faster and better heat conduction, achieving optimal heat dissipation performance, ensuring the lighting performance of the lamp and extending its service life.
[0055] The driver board controls the switching of the light illumination modes: urban mode and high-speed mode. Urban mode is suitable for use in urban areas and other places with good road lighting conditions, while high-speed mode is suitable for use in environments with poor lighting conditions, such as highways and suburbs.
[0056] (1) In urban mode, all LED light sources are illuminated. The LED light sources emit beams, which are reflected and shaped by a reflector, primarily used to create the horizontal illumination width of the auxiliary high beam pattern. Simultaneously, the white laser light source module is illuminated, and its power is adjusted to half of the high-speed mode. The white laser module emits a laser beam, which enters the laser optical lens and is shaped before exiting, primarily used to increase the illumination distance of the auxiliary high beam pattern. In this way, the LED and laser light sources are used together to form a specially designed auxiliary high beam pattern, ensuring both illumination width and illumination distance.
[0057] The white laser automotive auxiliary lights are pre-installed on vehicles with a width of 0.6m and a height of 1.9m, one on each side. The maximum illumination distance at a 5lx isohyet is 237m; the 5lx line width is 30 meters at 50 meters in front of the vehicle; and the 5lx line width is 31 meters at 100 meters in front of the vehicle.
[0058] (2) In high-speed mode, all LED light sources are lit, and the white laser light source module is lit at the same time. The optical path design of high-speed mode is the same as that of urban mode. The only difference is that the lighting power of the white laser light source is increased in high-speed mode to further improve the illumination distance of the lamp.
[0059] The white laser automotive auxiliary lights are pre-installed on vehicles with a width of 0.6m and a height of 1.9m, one on each side. The maximum illumination distance at a 5lx isohyet is 350m; the 5lx line width is 29 meters 50 meters in front of the vehicle; and the 5lx line width is 30 meters 100 meters in front of the vehicle.
[0060] (3) Functional implementation of the driver board: The driver board 2 achieves reverse connection protection, temperature control, mode control, and thermal management control through active MCU control and automotive-grade driver chip. The control principle is as follows:
[0061] Figure 5 To prevent reverse connection, surge protection, and power supply circuitry, and to provide a reliable power supply for subsequent circuits, Figure 6This is an MCU and temperature sampling and control circuit used to collect the operating temperatures of the LED, PCB, and white laser light source, and adjust the drive current of each load accordingly to ensure the auxiliary lamp operates within its efficient temperature control range. Figure 7 This is a white laser constant current drive circuit. The mode switching can be applied to the EN pin to control the output current. Figure 8 This is a high-efficiency dual-channel LED driver circuit. Its operating current and temperature sampling can be controlled by an MCU to ensure it operates under optimal conditions. It also features output short-circuit and open-circuit protection.
[0062] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.
[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A white laser automotive auxiliary lamp characterized by, The application relates to a vehicle lamp shell, an LED light source and a white laser light source arranged in the vehicle lamp shell, an optical assembly, a driving plate, and a driving circuit. The LED light source comprises a PCB plate, and a plurality of LED lamps are arranged on the PCB plate. The PCB plate is arranged at the bottom of the vehicle lamp shell, and the plurality of LED lamps are arranged on the upper end of the PCB plate and irradiate upwards. The optical assembly comprises a reflector, and a plurality of reflection bowls are arranged on the reflector.
2. The white laser automotive auxiliary lamp according to claim 1, wherein, The white laser light source comprises a white laser module, and the white laser module is a reflection type light source.
3. The white laser automotive auxiliary lamp according to claim 2, wherein, The optical assembly comprises an optical lens arranged on the laser path of the white laser module and used for shaping the laser beam. The plurality of LED lamps are symmetrically arranged relative to the white laser module.
4. The white laser automotive auxiliary lamp according to claim 3, wherein, The driving plate is arranged at the top of the vehicle lamp shell.
5. The white laser vehicle auxiliary lamp according to claim 4, wherein, The driving circuit comprises an anti-reverse connection circuit, an MCU and a temperature sampling control circuit, a white laser light source constant current driving circuit, and a double-path LED constant current driving circuit.
6. The white laser automotive auxiliary lamp according to claim 5, wherein, The vehicle lamp shell is provided with an outer lamp cover in front of the vehicle lamp.
7. The white laser vehicle supplemental lamp of claim 1, wherein, The vehicle lamp shell comprises an upper shell and a lower shell, a waterproof rubber ring is arranged between the upper shell and the lower shell, the lower shell is provided with a plurality of heat dissipation grooves, and the heat dissipation grooves are arranged in parallel.
8. The white laser vehicle supplemental lamp of claim 1, wherein, 9. The white laser vehicle supplemental lamp of claim 1, wherein,