A method and device for switching between high beam and low beam of a vehicle lamp

Abstract

A kind of method and device for switching of car light high-low light, independently controlled low light source and high light source are respectively arranged to carry out illumination, when carrying out low light illumination, independently open low light source, form low light illumination light line.High light source light line is deflected by high light source deflection lens and is irradiated on main lens to reduce the dark area between low light source and high light source, when carrying out high light illumination, low light source and high light source are simultaneously opened, the light line emitted by low light source and the light line emitted by high light source are fused by main lens, form high light illumination light line and carry out illumination.The beneficial effects of the present application are: using high light deflection design, the problem of single-lens high-low light spot not coinciding can be effectively solved.It uses lens to deflect high light source, eliminates the influence of dark area as far as possible, so that low light source and high light source can be effectively fused.On this basis, high light source eliminates halo caused by light dispersion by refraction and light path shielding.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle lighting, and more specifically to a method and apparatus for switching between high and low beams of vehicle headlights. Background Technology

[0002] In the prior art, electric vehicles are equipped with lighting devices for nighttime illumination. Prior art vehicle lights with high / low beam switching capabilities are mainly divided into the following two categories.

[0003] The first type uses a single light source in conjunction with a lens for illumination. The high and low beams are switched by using an electromechanical control plate to block the light source.

[0004] The second type involves setting two illumination sources and creating a dual-lens system by dividing the main lens into near and far beam zones to achieve switching between near and far beams.

[0005] The third type is the single-curved lens, which reflects near light and creates a cutoff line between light and dark by blocking the light with a light shield, while direct light from the distance creates a light spot.

[0006] Among them, the first type, which uses electronic control components to control the light-shielding plate, has a more complex structure and better performance, but it has problems such as high production cost and easy damage and lack of durability of electronic control components.

[0007] The second category involves complex main lens designs that affect the product's appearance.

[0008] The third type is that because the low beam needs to be blocked by the low beam cutoff line shield, the high beam light source cannot overlap with the low beam shield due to its optical principle and physical structure. This results in a dark area between the high beam and the low beam, which does not meet the regulations and also affects the lighting effect.

[0009] In summary, all three types of existing vehicle lighting have certain problems, and a solution is urgently needed to address these main issues. Summary of the Invention

[0010] This invention overcomes the shortcomings of the prior art and provides a method and apparatus for switching between high and low beams of vehicle headlights.

[0011] The objective of this invention is achieved through the following technical solution.

[0012] A method for switching between high and low beams in vehicle headlights: Independently controlled low beam and high beam sources are used for illumination. The light from the high beam source is deflected by a high beam deflecting lens and then shines onto the main lens, thereby reducing the dark area between the low beam and high beam spots. When using low beam lighting, the low beam source is turned on independently to create low beam illumination. When using high beam lighting, both the low beam and high beam lights are turned on simultaneously. The light emitted by the low beam and the light emitted by the high beam are combined through the main lens to form the high beam lighting.

[0013] A device for switching between high and low beams in vehicle headlights includes a main light-emitting lens, a high beam source, a high beam refraction lens, a low beam source, a low beam reflector, and a low beam cut-off line shield fixedly mounted on a base. The low beam source is positioned correspondingly to the low beam reflector and the low beam cut-off line shield, allowing the low beam source to shine directly onto the low beam reflector. The low beam source is reflected by the low beam cut-off line shield onto the main light-emitting lens, forming a clear cut-off line. The high beam source is positioned correspondingly to the high beam refraction lens, allowing the high beam source to be refracted onto the main light-emitting lens.

[0014] The light-emitting primary lens is a complete curved lens.

[0015] The front end of the base is provided with a mounting slot, and a high beam light source is provided in the mounting slot. A high beam refraction lens is provided in the optical path between the high beam light source and the main light-emitting lens.

[0016] The mounting slot and the top edge of the base are equipped with a low beam cutoff line shield.

[0017] The top of the base is equipped with a low beam light source and a low beam reflector. The low beam reflector includes a connecting part and a reflective part. The connecting part is fixedly connected to the base, and the reflective part is set to correspond to the low beam light source.

[0018] The reflective part has a curved surface structure.

[0019] The base is equipped with a stray light shield, and the position of the stray light shield is matched with the reflected light path of the near light source and the refracted polarized light of the far light source.

[0020] The base is equipped with a heat sink, which is connected to both the low beam and high beam light sources.

[0021] The beneficial effects of this invention are as follows: This solution adopts a dual-light source design, which can effectively reduce production costs and extend the life of the device. It utilizes lenses to deflect the near-beam light source, minimizing the influence of dark areas and allowing the near-beam and far-beam light sources to be effectively integrated. Furthermore, the far-beam light source eliminates halos caused by light divergence through refraction and blocking of the light path, further enhancing the illumination effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the high beam headlight setup; Figure 3 This is a schematic diagram of the low beam headlight setup; Figure 4This is a schematic diagram of the low beam cutoff line shield setup; Figure 5 This is a schematic diagram of the low beam reflector; Figure 6 This is a diagram showing the effect of a low-light source illuminating the main light-emitting lens. Figure 7 This is an image showing the effect of a traditional direct high beam beam. Figure 8 This is a rendering of the high beam spot in this embodiment; In the diagram: 1. Main light-emitting lens; 2. Low beam source; 3. High beam source; 4. Low beam reflector; 401. Connecting part; 402. Reflecting part; 5. Base; 501. Mounting slot; 6. Stray light shield; 7. Heat sink; 8. High beam refraction lens; 9. Low beam cutoff line shield. Detailed Implementation

[0023] The technical solution of the present invention will be further described below through specific embodiments.

[0024] Example A method for switching between high and low beams in vehicle headlights: Independently controlled low beam source 2 and high beam source 3 are used for illumination. The light from the high beam source 3 is deflected by a deflecting lens before illuminating the main lens, thereby reducing the dark area between the low beam and high beam spots. When low beam illumination is applied, low beam source 2 is turned on independently to form low beam illumination light; When high beam illumination is applied, both low beam source 2 and high beam source 3 are turned on simultaneously. The light emitted by low beam source 2 and high beam source 3 are combined through the main lens to form high beam illumination.

[0025] A device for switching between high and low beams in vehicle headlights includes a main light-emitting lens 1, a high beam source 3, a high beam refraction lens 8, a low beam source 2, a low beam reflector 4, and a low beam cutoff line shield 9, all fixedly mounted on a base 5. The low beam source 2 is positioned correspondingly to the low beam reflector 4 and the low beam cutoff line shield 9, allowing the low beam source 2 to shine directly onto the low beam reflector 4. The low beam source 2 is then reflected by the low beam cutoff line shield 9 onto the main light-emitting lens 1, forming a clear cutoff line. The high beam source 3 is positioned correspondingly to the high beam refraction lens 8, allowing the high beam source 3 to be refracted by the high beam refraction lens 8 onto the main light-emitting lens 1.

[0026] The light-emitting primary lens 1 is a complete curved lens.

[0027] The front end of the base 5 is provided with a mounting groove 501, and a high beam light source 3 is provided in the mounting groove 501. A high beam refraction lens 8 is provided in the optical path between the high beam light source 3 and the light-emitting main lens 1.

[0028] The mounting slot 501 and the top edge of the base 5 are provided with a low beam cut-off line light shield 9.

[0029] The base 5 has a low beam light source 2 and a low beam reflector 4 on its top. The low beam reflector 4 includes a connecting part 401 and a reflective part 402. The connecting part 401 is fixedly connected to the base 5, and the reflective part 402 is correspondingly arranged with the low beam light source 2.

[0030] The reflective part 402 has an arc-shaped structure.

[0031] The base 5 is equipped with a stray light shield 6, and the position of the stray light shield 6 is matched with the reflected light path of the near light source 2 and the refracted polarized light of the far light.

[0032] A heat sink 7 is provided on the base 5, and the heat sink 7 is connected to the low beam light source 2 and the high beam light source 3 respectively.

[0033] The working principle of this solution is as follows: Figure 1-4 As shown, the headlights with high / low beam switching function are triggered and illuminated by the low beam source 2 and the high beam source 3 respectively.

[0034] When low beam illumination is applied, only the low beam source 2 is lit. The light emitted by the low beam source 2 is reflected by the low beam reflector 4 to form a light path. At the same time, the low beam source 2 is reflected by the low beam cut-off line shield 9 onto the main light-emitting lens 1, illuminating the main light-emitting lens 1 for light emission. The low beam source 2 forms a clear cut-off line between light and dark through the low beam cut-off line shield 9.

[0035] When high beam illumination is required, both low beam source 2 and high beam source 3 are turned on simultaneously. The light from high beam source 3 is refracted by high beam refraction lens 8 and enters the main light output lens 1, thus achieving the fusion of light from low beam source 2 and high beam source 3 to form high beam illumination.

[0036] Preferably, the low beam cutoff line shield 9, while blocking the light and dark cutoff lines, needs to consider leaving a light-emitting area for the high beam light source 3. At the same time, in order to reduce the difference between high and low beams, the thickness of the low beam cutoff line shield 9 should be minimized during design and manufacturing.

[0037] Furthermore, the purpose of setting the high beam refraction lens 8 is to reduce the dark area generated between the low beam light source 2 and the high beam light source 3, so that the light passing through is concentrated and moved towards the junction of the low beam refraction part and the high beam refraction part of the main light output lens 1, so as to eliminate the influence of the dark area to the greatest extent and achieve effective fusion of the two light sources.

[0038] Furthermore, to prevent the light reflected from the near-light source 2 from creating an aperture, a stray light shield 6 is provided to block the scattered light.

[0039] Furthermore, such as Figure 5As shown, the low beam reflector 4 uses the reflective part 402 to reflect light, and its interior is an arc-shaped surface.

[0040] like Figure 6 As shown in the figure, the light spot effect of the near light source 2 shining on the light-emitting main lens 1 is illustrated.

[0041] like Figure 7 As shown in the figure, the effect of a traditional direct beam of light is illustrated.

[0042] like Figure 8 As shown in the figure, the low-beam light source 2, processed by the low-beam reflector 4 and the light shield 6, and the high-beam light source 3, processed by the high-beam refraction lens 8, are combined and blended in this embodiment. It can be seen from the figure that not only is the high beam compressed into the low-beam spot, effectively improving the overall light blending effect, but also unnecessary stray light is effectively removed.

[0043] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A method for switching between high and low beams of vehicle headlights, characterized in that: The system uses independently controlled low-beam and high-beam light sources for illumination. The light from the high-beam light source is deflected by a high-beam deflecting lens and then shines onto the main lens to reduce the dark area between the low-beam and high-beam spots. When using low beam lighting, the low beam source is turned on independently to create low beam illumination. When using high beam lighting, both the low beam and high beam lights are turned on simultaneously. The light emitted by the low beam and the light emitted by the high beam are combined through the main lens to form the high beam lighting.

2. A device for switching between high and low beams of vehicle headlights, characterized in that: The main light-emitting lens, high beam source, high beam refraction lens, low beam source, low beam reflector, and low beam cutoff line shield are fixedly mounted on the base. The low beam source is positioned correspondingly to the low beam reflector and the low beam cutoff line shield, so that the low beam source shines directly on the low beam reflector. The low beam source is reflected onto the main light-emitting lens through the low beam cutoff line shield. The high beam source is positioned correspondingly to the high beam refraction lens, so that the high beam source is refracted onto the main light-emitting lens through the high beam refraction lens.

3. The device for switching between high and low beams of vehicle headlights according to claim 2, characterized in that: The light-emitting primary lens is a complete curved lens.

4. The device for switching between high and low beams of vehicle headlights according to claim 2, characterized in that: The front end of the base is provided with a mounting slot, and a high beam light source is provided in the mounting slot. A high beam refraction lens is provided in the optical path between the high beam light source and the main light-emitting lens.

5. The device for switching between high and low beams of vehicle headlights according to claim 4, characterized in that: The mounting slot and the top edge of the base are equipped with a low beam cutoff line shield.

6. The device for switching between high and low beams of vehicle headlights according to claim 4, characterized in that: The top of the base is equipped with a low beam light source and a low beam reflector. The low beam reflector includes a connecting part and a reflective part. The connecting part is fixedly connected to the base, and the reflective part is set to correspond to the low beam light source.

7. The device for switching between high and low beams of vehicle headlights according to claim 6, characterized in that: The reflective part has a curved surface structure.

8. The device for switching between high and low beams of vehicle headlights according to claim 4, characterized in that: The base is equipped with a stray light shield, and the position of the stray light shield is matched with the reflected light path of the near light source and the refracted polarized light of the far light source.

9. The device for switching between high and low beams of vehicle headlights according to claim 2, characterized in that: The base is equipped with a heat sink, which is connected to both the low beam and high beam light sources.

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