A car lamp structure with cold and warm color light switching function and a car

Abstract

The application discloses a car lamp structure with cold and warm color light switching function and a car, which comprises a shell, a lamp bead assembly, a reflecting element, an inner lens group and an outer lens arranged in the shell in sequence along a light path transmission direction; wherein the lamp bead assembly comprises multiple lamp bead groups; the reflecting element adopts a condenser; the inner lens group is arranged in one-to-one correspondence with the lamp bead group, each inner lens group has a plane facing the light entrance surface of the reflecting element and a plurality of convex arc surfaces facing the light exit surface of the outer lens, and the ratio of the size b of each inner lens group in the left-right direction to the size a in the front-rear direction ranges from 2 to 24; the outer lens is arranged on the end surface of the shell; the application can compress the size of the inner lens in the light path direction, directly reduce the transmission distance of light from the reflecting element to the outer lens, and allow the inner lens group to be arranged in parallel and compact in the left-right direction, thereby avoiding the redundant space caused by the circular or square lens in the traditional design.

Description

Technical Field

[0001] This invention relates to the field of automotive headlight technology, specifically to a headlight structure and an automobile with a function of switching between warm and cool light colors. Background Technology

[0002] In the field of automotive lighting, headlight modules need to support the switching function of warm and cool color temperatures to adapt to different environmental conditions and driving needs (such as using a warm color temperature to enhance penetration in rainy or foggy weather, and using a cool color temperature to increase brightness at night). In existing technologies, common solutions achieve color temperature switching through multi-color LED combinations and optical elements, but this approach has significant drawbacks:

[0003] Traditional headlight modules employ multiple independent LED clusters and complex optical structures (such as reflectors or dual lenses), resulting in excessively large module dimensions in the optical path direction (front-to-back). For example, while the design using mixed warm and cool LEDs simplifies control, it only applies to the low beam module, neglecting the high beam component, leading to overall structural redundancy. Dual-lens systems, although supporting multi-color temperature switching, have fixed lens sizes, making it impossible to optimize axial dimensions and increasing the overall headlight assembly size. Furthermore, existing inner lens designs are flawed, with large dimensions in the parallel optical path direction, resulting in a long light transmission path, increased light loss, and higher installation space requirements. Traditional housings are entirely sealed, forcing heat dissipation components to be built into the housing, limiting heat dissipation space, causing severe heat buildup, and accelerating LED light decay. Simultaneously, the lack of precise alignment between the LED clusters and the inner lens leads to uneven light mixing or substandard light spots, affecting illumination performance. In summary, these shortcomings limit the compact design of automotive headlight modules, especially in the space-constrained front compartment of vehicles, making installation difficult and costly. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a vehicle headlight structure and automobile with a function of switching between warm and cool light colors. It can compress the size of the inner lens in the optical path direction, directly reducing the transmission distance of light from the reflective element to the outer lens. The shape design of the inner lens allows the inner lens group to be arranged compactly side by side in the left and right directions, avoiding the redundant space caused by circular or square lenses in traditional designs.

[0005] The technical solution of the present invention is as follows:

[0006] In a first aspect of the invention, a housing is provided, wherein an LED chip assembly, a reflective element, an inner lens group, and an outer lens are installed within the housing; the housing is open at both its front and rear ends, the outer lens is installed at the front open end of the housing, and the inner lens group, the reflective element, and the LED chip assembly are sequentially installed behind the outer lens; the LED chip assembly is connected to a circuit board, the circuit board is installed at the rear open end of the housing, and the circuit board is mounted on a heat dissipation assembly located outside the housing to dissipate heat from the circuit board;

[0007] The reflective element is a condenser, and the condenser is set in a one-to-one correspondence with the lamp beads. The lamp beads of each lamp bead group are located at the center of the condenser. The inner lens group is set in a one-to-one correspondence with the lamp bead group. The light-incident surface of each inner lens group facing the reflective element is a plane, and the light-exit surface facing the outer lens is a plurality of convex arc surfaces. The ratio of the dimension b in the left-right direction to the dimension a in the front-back direction of each inner lens group is in the range of 2 to 24.

[0008] In some embodiments of the present invention, the angle between the tangent of the raised arc surface from the left and right sides to the middle and the center line of the raised surface gradually increases, and the angle ranges from 30° to 90°.

[0009] In some embodiments of the present invention, the condenser is arranged on a mounting plate, and the mounting plate is fixed to the inner wall of the housing by screws; the left and right ends of the inner lens are respectively provided with protrusions, which engage in grooves on the inner wall of the housing to install the inner lens inside the housing.

[0010] In some embodiments of the present invention, the lamp assembly includes a cool-color low beam lamp group, a warm-color low beam lamp group, a warm-color high beam lamp group, and a cool-color high beam lamp group;

[0011] The cool-colored low beam LED group is equipped with a corresponding cool-colored low beam inner lens group, the warm-colored low beam LED group is equipped with a corresponding warm-colored low beam inner lens group, the warm-colored high beam LED group is equipped with a corresponding warm-colored high beam inner lens group, and the cool-colored high beam LED group is equipped with a corresponding cool-colored high beam inner lens group.

[0012] In some embodiments of the present invention, a light-shaped baffle is provided between the reflective element and the cool-color near-light inner lens group and the warm-color near-light inner lens group, and the light-shaped baffle is provided with a first light-dark cutoff line structure and a second light-dark cutoff line structure.

[0013] In some embodiments of the present invention, the first cutoff line structure is located between the reflective element and the cool-color near-light inner lens group, and is used to form a cutoff line in the cool-color near-light pattern; the second cutoff line structure is located between the reflective element and the warm-color near-light inner lens group, and is used to form a cutoff line in the warm-color near-light pattern.

[0014] In some embodiments of the present invention, both the first and second light-dark cutoff line structures are provided with multiple inflection points; the focal points of the cool-color near-light inner lens group and the warm-color near-light inner lens group are located at the inflection points of the light-dark cutoff line structures.

[0015] In some embodiments of the present invention, the focal points of the warm-colored high beam inner lens group and the cool-colored high beam inner lens group are located on the same focal plane as the focal points of the cool-colored low beam inner lens group and the warm-colored low beam inner lens group, and this focal plane is located between the reflecting element and the inner lens group.

[0016] In some embodiments of the present invention, the lamps of each lamp group are formed by encapsulating at least one LED particle.

[0017] In a second aspect of the invention, an automobile is provided, including the headlight structure with a function of switching between warm and cool light colors as described in the first aspect, wherein a plurality of fixing brackets are provided around the housing, and the fixing brackets are provided with limiting holes, the limiting holes being used to mount the automobile with bolts.

[0018] One or more technical solutions of the present invention have the following beneficial effects:

[0019] (1) The vehicle lamp structure provided by the present invention uses the lamp assembly as a light source. The light emitted is reflected by the reflective element to the incident surface of the inner lens. After the light is refracted by the inner lens, it is emitted from the light-emitting surface of the inner lens. The light emitted from the inner lens is refracted by the outer lens and then emitted as an illumination light pattern. Since the incident surface of the inner lens assembly facing the reflective element is a plane, the installation gap of the traditional curved lens is eliminated. The light-emitting surface facing the outer lens is a multi-convex arc surface. The multi-convex arc surface light-emitting surface achieves precise light diffusion in a very short distance (small size a) through discrete optical curved surface, replacing the long-distance uniform light function of the traditional large-size single lens. By limiting the ratio of the size of the inner lens assembly in the left-right direction to the size in the front-back direction to 2~24, the size of the inner lens in the optical path direction can be compressed, directly reducing the transmission distance of light from the reflective element to the outer lens. The wide and flat shape (b>>a) allows the inner lens assembly to be arranged compactly side by side in the left-right direction, avoiding the redundant space caused by the circular or square lens in the traditional design.

[0020] (2) In this invention, the angle between the tangent of the inner lens and the center line of the raised arc surface gradually increases from the left and right sides to the center, so that the light becomes more uniform from the edge to the center, avoiding the dark area at the edge or the overexposure at the center caused by the traditional single arc surface; in addition, each group of lamp beads is equipped with an inner lens group to avoid cross interference of multi-color temperature light, ensure the purity of color temperature switching, adapt to the light distribution requirements of different lamp bead groups (such as low beam / high beam), and ensure the consistency of light spot when switching between warm and cool light.

[0021] (3) By setting up the light pattern baffle, the cool-colored near light is refracted by the corresponding inner lens, and the position of the center line and the cutoff line of the light pattern formed is approximately the same as the position of the center line and the cutoff line of the light pattern of the warm-colored near light; the cool-colored far light is refracted by the corresponding inner lens, and the position of the center line of the light pattern formed is approximately the same as the position of the center line of the light pattern of the warm-colored far light, so as to avoid the large shift of the light pattern position caused by the switching between warm-colored light and cool-colored light. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the vehicle lamp of the present invention;

[0023] Figure 2 This is a front view of the vehicle headlight of the present invention;

[0024] Figure 3 for Figure 2 Sectional view along the BB direction;

[0025] Figure 4 This is a schematic diagram of the LED chip assembly of the present invention;

[0026] Figure 5 This is a schematic diagram of the light-shaped baffle, lamp bead assembly, and concentrator of the present invention.

[0027] Figure 6 This is a schematic diagram of the first and second light and dark cutoff line structures of the light-shaped baffle of the present invention;

[0028] Figure 7 for Figure 2 Sectional view along line AA;

[0029] Figure 8 This is a schematic diagram showing the focal position of the inner lens group of the present invention;

[0030] Figure 9 This is a schematic diagram of the cool-color near-light optical path of the present invention;

[0031] Figure 10 This is a schematic diagram of the warm-color low-beam optical path of the present invention;

[0032] Figure 11 This is a schematic diagram of the warm-colored high-beam optical path of the present invention;

[0033] Figure 12 This is a schematic diagram of the cool-color high-beam optical path of the present invention;

[0034] Figure 13 These are physical images of the warm and cool light patterns of the present invention, wherein (a) is a physical image of the warm light pattern and (b) is a physical image of the cool light pattern.

[0035] In the diagram: 101, housing; 102, heat dissipation assembly; 201, cool-colored low beam LED assembly; 202, warm-colored low beam LED assembly; 203, warm-colored high beam LED assembly; 204, cool-colored high beam LED assembly; 301, condenser; 400, beam pattern baffle; 401, first cut-off line structure; 402, second cut-off line structure; 501, cool-colored low beam inner lens assembly; 502, warm-colored low beam inner lens assembly; 503, warm-colored high beam inner lens assembly; 504, cool-colored high beam inner lens assembly; 601, outer lens. Detailed Implementation

[0036] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is intended to include the plural form as well. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Example 1

[0039] As described in the background section, there are shortcomings in the existing technology, and in order to solve the above-mentioned technical problems...

[0040] In a typical embodiment of the present invention, a vehicle headlight structure with a function of switching between warm and cool color light is proposed, such as... Figures 1 to 3 As shown, the device includes a housing 101, within which an LED chip assembly, a reflective element, an inner lens group, and an outer lens are installed. Both the front and rear ends of the housing are open. The outer lens is installed at the front open end of the housing. Behind the outer lens, the inner lens group, the reflective element, and the LED chip assembly are sequentially installed. The LED chip assembly is connected to a circuit board, which is installed at the rear open end of the housing. The circuit board is mounted on a heat dissipation assembly located outside the housing to dissipate heat from the circuit board.

[0041] The reflective element is a condenser, and the condenser is set in a one-to-one correspondence with the lamp beads. The lamp beads of each lamp bead group are located at the center of the condenser. The inner lens group is set in a one-to-one correspondence with the lamp bead group. The light-incident surface of each inner lens group facing the reflective element is a plane, and the light-exit surface facing the outer lens is a plurality of convex arc surfaces. The ratio of the dimension b in the left-right direction to the dimension a in the front-back direction of each inner lens group is in the range of 2 to 24.

[0042] In this embodiment, the inner lens group is larger in the left-right direction and smaller in the front-back direction. Since numerous components need to be arranged in the front-back direction of the high and low beam modules, and each component needs to have a certain distance between it for optical purposes, by constructing the inner lens group in this embodiment, the purpose of achieving approximately consistent positions of warm and cool color beams can be achieved without increasing the front-back size of the module.

[0043] Furthermore, the compression of the inner lens's dimensions along the optical path directly reduces the transmission distance of light from the reflective element to the outer lens. The wide, flat shape (b>>a) allows the inner lens group to be arranged compactly side-by-side in the left-right direction, avoiding the redundant space caused by circular or square lenses in traditional designs. At the same time, the planar light-incident surface is close to the light-out port of the reflective element, eliminating the mounting gap of traditional curved lenses and further shortening the optical path. The multi-convex arc-shaped light-out surface, through discretized optical surfaces, achieves precise light diffusion over an extremely short distance (small size a), replacing the long-distance light homogenization function of traditional large-size single lenses.

[0044] Specifically, such as Figure 3 As shown, the dimension of each inner lens group in the front-to-back direction of the module is denoted as 'a', and the dimension of each inner lens group in the left-to-right direction of the module is denoted as 'b'. The ratio of 'a' to 'b' ranges from 2 to 24. Specifically, the value of 'b' ranges from 40mm to 120mm, for example, 40mm, 46mm, 60mm, 65mm, 78mm, 90mm, or 120mm, etc. The value of 'a' ranges from 5mm to 20mm, for example, 5mm, 9mm, 10mm, 12mm, 16mm, or 20mm.

[0045] As an optional implementation, the light-incident surface of each inner lens group facing the reflecting element is a plane, and the light-exit surface of each inner lens group facing the outer lens 601 is a convex arc surface. For example... Figure 3 As shown, the angles between the tangents of the raised arc surfaces from both sides to the center and the center line of the raised surface are denoted as ∠a, ∠b, ∠c, ∠d, etc. The angles between the tangents of the raised arc surfaces from the left and right sides to the center and the center line of the raised surface gradually increase, with the angle values ​​ranging from 30° to 90°. For example, ∠a1=∠a2=30°, ∠b1=∠b2=36°, ∠c1=∠c2=42°, ∠d1=∠d2=47°. Since each LED bead group has a relatively large dimension in the left-right direction of the module, and the outer lens 601 should not be too large in the left-right direction of the module, the inner lens group allows the light emitted by all the LED beads to enter the incident surface of the outer lens 601.

[0046] In this embodiment, the condenser is arranged on a mounting plate, which is fixed to the inner wall of the housing by screws. The inner lens has protrusions at both ends, which engage with grooves on the inner wall of the housing to mount the inner lens inside the housing. It should be noted that the reflecting element, inner lens, and outer lens 601 can be directly connected to the housing 101, indirectly connected to the housing 101 via other connectors, or combined in pairs before being connected to the housing 101. The light source is connected to the circuit board, which controls the independent lighting or extinguishing of each LED. The heat dissipation assembly 102 is used to dissipate heat from the light source, thereby reducing the temperature of the light-emitting particles and improving their lifespan.

[0047] Understandably, the housing acts as a support for the LED chip assembly, reflector, inner lens group, and outer lens. The housing is a rectangular structure with openings at the front and rear. The outer lens is installed at the front opening, and the circuit board and heat dissipation assembly are installed at the rear opening. Inside the housing, the LED chip assembly, reflector, and inner lens group are installed sequentially. The inner wall of the housing has corresponding mounting structures, such as bolt holes or mounting grooves, to facilitate the installation of each component. The housing, as an external protective layer, is made of high-strength materials, resisting external erosion such as dust, rain, and flying stones, ensuring that the internal optical components are not contaminated or physically damaged, thus maintaining the stability and lifespan of the lighting function. As the "skeleton" of the lamp, the housing is tightly connected to the vehicle body through a reinforced frame (such as a mounting bracket and limiting holes), providing overall rigid support and ensuring that the lamp resists vibration and impact during vehicle operation, preventing displacement or deformation. An integrated heat dissipation assembly accelerates heat dissipation, preventing high temperatures from shortening bulb life or causing material aging. The heat dissipation assembly is located outside the housing and directly exposed to the air. The circuit board acts as a thermal buffer layer, blocking heat transfer to the optical components and preventing high-temperature deformation that could lead to light distortion.

[0048] In this embodiment, the LED assembly includes a cool-colored low beam LED group, a warm-colored low beam LED group, a warm-colored high beam LED group, and a cool-colored high beam LED group. By using different groups of LEDs, this embodiment allows for adjustments to the arrangement and quantity of each LED group based on the limitations of the headlight installation space. It also enables the simultaneous illumination of both warm and cool-colored light, achieving a composite of warm and cool light. Furthermore, the inner lens in this embodiment has a smaller dimension in the direction roughly parallel to the light path, which helps reduce the module's overall size in this direction, thereby reducing the installation space required for the headlight. Each LED is connected to a circuit board, which includes a controller, such as a PLC controller or other type of controller, to independently illuminate or extinguish each LED.

[0049] like Figure 4 As shown, the light source of the vehicle headlight module includes a cool-colored low beam LED group 201, a warm-colored low beam LED group 202, a warm-colored high beam LED group 203, and a cool-colored high beam LED group 204. For the light-emitting particles in each LED group, monochromatic light-emitting particles that can only emit warm or cool colors can be used, RGB light-emitting particles can be used, or a monochromatic light source combined with a fluorescent layer or filter can be used to form a color-changing light source. In other words, the type of light-emitting particles is not limited; any light source capable of emitting warm or cool light in the prior art is acceptable. Furthermore, the light source in this embodiment is not limited to the same type of light source; a combination of the aforementioned particles can be used to form the light source.

[0050] Each LED chip can be formed by encapsulating one LED particle or multiple LED particles, such as two, three, or four, etc.

[0051] Furthermore, the cool-colored low beam LED group is provided with a corresponding cool-colored low beam inner lens group, the warm-colored low beam LED group is provided with a corresponding warm-colored low beam inner lens group, the warm-colored high beam LED group is provided with a corresponding warm-colored high beam inner lens group, and the cool-colored high beam LED group is provided with a corresponding cool-colored high beam inner lens group.

[0052] Specifically, the inner lenses include inner lens groups 501 (cool-colored low beam), 502 (warm-colored low beam), 503 (warm-colored high beam), and 504 (cool-colored high beam), each corresponding to one of the cool-colored low beam LED group 201, the warm-colored low beam LED group 202, the warm-colored high beam LED group 203, and the cool-colored high beam LED group 204. Each inner lens group is set independently; that is, cool-colored low beam, warm-colored low beam, warm-colored high beam, and cool-colored high beam each correspond to a different inner lens group, and each optical path does not affect the others.

[0053] In this embodiment, a light-shaped baffle is provided between the reflective element and the cool-color near-light inner lens group and the warm-color near-light inner lens group, and the light-shaped baffle is provided with a first light-dark cutoff line structure and a second light-dark cutoff line structure.

[0054] like Figure 5 and Figure 6 As shown, the first cutoff line structure 401 is located between the reflective element and the cool-colored near-light inner lens group 501, and is used to form a cutoff line in the cool-colored near-light pattern; the second cutoff line structure 402 is located between the reflective element and the warm-colored near-light inner lens group 502, and is used to form a cutoff line in the warm-colored near-light pattern. Figure 7 As shown, the light pattern baffle 400 is only provided in the warm and cool color light paths of the low beam, and not in the high beam path. The light and dark cutoff line structure provided by the light pattern baffle 400 can block part of the low beam, thereby forming a light and dark cutoff line in the warm and cool color low beam light patterns.

[0055] Furthermore, both the first and second cut-off line structures 401 and 402 are provided with multiple inflection points; the focal points of the cool-colored low beam inner lens group and the warm-colored low beam inner lens group are located at the inflection points of the cut-off line structure. By setting multiple inflection points, they can be adapted to the low beam lamp beads arranged in the left and right directions, which is conducive to forming a cut-off line in the low beam pattern.

[0056] Specifically, the focal points of the warm-colored high beam inner lens group 503 and the cool-colored high beam inner lens group 504 are approximately located on the same focal plane as the focal points of the cool-colored low beam inner lens group 501 and the warm-colored low beam inner lens group 502; the distance between the focal plane and the light-incident surface of the inner lens is L2, 5mm≤L2≤30mm, for example, 5mm, or 5.6mm, or 6.2mm, or 7mm, or 8.2mm, or 9mm, or 10.8mm, or 20mm, or 24mm, or 30mm.

[0057] The distance between the focal plane and the reflecting element is L1, where 5mm ≤ L1 ≤ 30mm. For example, it can be 5mm, 5.2mm, 6.6mm, 6.9mm, 7.2mm, 8.2mm, 9.4mm, 10.5mm, 11mm, 18.5mm, 18.6mm, 20.6mm, 24.8mm, or 30mm.

[0058] like Figure 8 As shown, the horizontal plane where the center of the topmost LED group is located is taken as the first reference plane. The focal point of the topmost inner lens group is located below the first reference plane, with a spacing of D1, where 0mm < D1 ≤ 2mm, for example, 0.6mm, 0.8mm, 1.4mm, 1.6mm, or 2mm, etc. The horizontal plane where the center of the bottommost LED group is located is taken as the second reference plane. The focal point of the bottommost inner lens group is located above the second reference plane, with a spacing of D2, where 0mm < D2 ≤ 2mm, for example, 0.5mm, 0.65mm, 1.4mm, 1.8mm, or 2mm, etc. The horizontal planes where the centers of the two middle rows of LED groups are located are taken as the third and fourth reference planes, respectively. The focal points of the two rows of inner lens groups corresponding to the two middle rows of LED groups are located on the third and fourth reference planes, respectively. In other words, when the warm-colored low beam LED is in the center, the focal point of the cool-colored low beam inner lens group corresponding to the cool-colored low beam LED above the warm-colored low beam LED should be slightly lower. When the warm-colored high beam LED is in the center, the focal point of the cool-colored high beam inner lens corresponding to the cool-colored high beam LED below the warm-colored high beam LED should be slightly higher.

[0059] When cool-colored low beams are refracted by the corresponding inner lens, the center line and cutoff line of the resulting beam shape roughly coincide with those of warm-colored low beams. Similarly, when cool-colored high beams are refracted by the corresponding inner lens, the center line of the resulting beam shape roughly coincides with that of warm-colored high beams, thus avoiding significant shifts in beam shape position caused by the transition between warm and cool light.

[0060] In this embodiment, the light source of the vehicle headlight module is composed of multiple groups of LED beads, and each group of LED beads includes multiple independently illuminating light-emitting particles. Therefore, the light source proposed in this embodiment can control the number of LED beads lit in each group, thereby changing each light pattern. In addition, since the warm and cool color LED beads for both high and low beams proposed in this embodiment are independent, it can not only achieve a single color (warm or cool) high beam pattern or a cool light pattern, but also a high beam pattern combining warm and cool colors, as well as a low beam pattern combining warm and cool colors, thereby adapting to lighting needs under various weather conditions.

[0061] Warm light refers to light with a low color temperature, such as between 2000K and 3301K. Low color temperature light has strong penetrating power and is suitable for use in rainy or foggy weather. Cool light typically refers to light with a high color temperature between 5301K and 10000K, which can be used in good weather conditions. Figure 13 Image (a) shows warm-colored lighting. Figure 13 (b) shows cool-colored lighting.

[0062] In this embodiment, the arrangement order of the cool-colored low beam LED group 201, warm-colored low beam LED group 202, warm-colored high beam LED group 203, and cool-colored high beam LED group 204 in the vertical direction of the module is not limited, that is, it is randomly arranged. For example, it can be arranged in the following order: cool-colored low beam LED group 201, warm-colored low beam LED group 202, warm-colored high beam LED group 203, and cool-colored high beam LED group 204; or it can be arranged in the following order: warm-colored low beam LED group 204. Group 202, cool-colored low beam LED group 201, cool-colored high beam LED group 204, warm-colored high beam LED group 203; or it can be in the following order: warm-colored low beam LED group 202, cool-colored low beam LED group 201, warm-colored high beam LED group 203, cool-colored high beam LED group 204; or it can be in the following order: cool-colored low beam LED group 201, warm-colored low beam LED group 202, cool-colored high beam LED group 204, warm-colored high beam LED group 203.

[0063] As a preferred embodiment, such as Figure 4 As shown, the cool-colored low beam LED group 201, the warm-colored low beam LED group 202, the warm-colored high beam LED group 203, and the cool-colored high beam LED group 204 are arranged sequentially in the vertical direction of the module. Among them, the number of LEDs in the warm-colored low beam LED group 202 is greater than the number of LEDs in the cool-colored low beam LED group 201, and the number of LEDs in the warm-colored high beam LED group 203 is greater than the number of LEDs in the cool-colored high beam LED group 204.

[0064] The number of warm-colored LEDs can be greater than the number of cool-colored LEDs; that is, the number of warm-colored low beam LEDs is greater than the number of cool-colored low beam LEDs, and the number of warm-colored high beam LEDs is greater than the number of warm-colored high beam LEDs. Since lighting conditions are poor in rainy or foggy weather, increasing the number of warm-colored LEDs allows for a wider final warm-colored beam pattern, thus improving the lighting effect in rainy or foggy conditions. A wider beam pattern also enhances the warning effect. Because the larger number of warm-colored LEDs is located in the center of the module, while the smaller number of cool-colored LEDs are arranged on the upper and lower sides, the inner lens assembly can also form a structure that is wider in the middle and narrower at the top and bottom. In this case, the final high and low beam module can also have a shape that is wider in the middle and narrower at the top and bottom. This shape helps to reduce the size of the high and low beam module, reduce the installation space of the headlight, and is beneficial for use in automobiles.

[0065] The principle of the headlight structure with warm and cool color switching function provided in this embodiment is as follows: the light emitted by the light source is reflected by the reflective element to the incident surface of the inner lens. After being refracted by the inner lens, the light is emitted from the light-emitting surface of the inner lens. The light emitted from the inner lens is then refracted by the outer lens 601 and emitted as an illumination beam, such as... Figure 9-12 As shown.

[0066] Example 2

[0067] In a typical embodiment of this invention, an automobile is provided, including the headlight structure with a function of switching between warm and cool colors as described in Embodiment 1. Multiple fixing brackets are provided around the housing, and the fixing brackets are provided with limiting holes. The limiting holes are used to install the automobile with bolts.

[0068] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A vehicle headlight structure with a function of switching between warm and cool color light, characterized in that, The device includes a housing, within which an LED chip assembly, a reflective element, an inner lens group, and an outer lens are installed. The housing has openings at both the front and rear ends. The outer lens is installed at the front opening of the housing. Behind the outer lens, the inner lens group, the reflective element, and the LED chip assembly are installed in sequence. The LED chip assembly is connected to a circuit board, which is installed at the rear opening of the housing. The circuit board is mounted on a heat dissipation assembly located outside the housing to dissipate heat from the circuit board. The reflective element is a concentrator, and the concentrator is set in a one-to-one correspondence with the lamp beads, with the lamp beads of each lamp bead assembly located at the center of the concentrator. The inner lens group is set in a one-to-one correspondence with the lamp bead assembly. The light-incident surface of each inner lens group facing the reflective element is a plane, and the light-outceasing surface facing the outer lens is a plurality of convex arc surfaces. The ratio of the dimension b in the left-right direction to the dimension a in the front-back direction of each inner lens group is in the range of 2 to 24.

2. The vehicle headlight structure with warm / cool color light switching function as described in claim 1, characterized in that, The angle between the tangent of the raised arc surface on the light-emitting surface from the left and right sides to the middle and the center line of the raised surface gradually increases, and the angle ranges from 30° to 90°.

3. The vehicle headlight structure with warm / cool color light switching function as described in claim 1, characterized in that, The condenser is arranged on the mounting plate, which is fixed to the inner wall of the housing by screws; the left and right ends of the inner lens group are respectively provided with protrusions, which engage in the grooves on the inner wall of the housing to install the inner lens group inside the housing.

4. The vehicle headlight structure with warm / cool color light switching function as described in claim 1, characterized in that, The LED assembly includes a cool-color low beam LED group, a warm-color low beam LED group, a warm-color high beam LED group, and a cool-color high beam LED group. The cool-colored low beam LED group is equipped with a corresponding cool-colored low beam inner lens group, the warm-colored low beam LED group is equipped with a corresponding warm-colored low beam inner lens group, the warm-colored high beam LED group is equipped with a corresponding warm-colored high beam inner lens group, and the cool-colored high beam LED group is equipped with a corresponding cool-colored high beam inner lens group.

5. The vehicle headlight structure with warm / cool color light switching function as described in claim 4, characterized in that, A light-shaped baffle with a first light-dark cutoff line structure is provided between the reflective element and the cool-color near-light inner lens group; another light-shaped baffle with a second light-dark cutoff line structure is provided between the reflective element and the warm-color near-light inner lens group.

6. The vehicle headlight structure with warm / cool color light switching function as described in claim 5, characterized in that, The first cutoff line structure is located between the reflective element and the cool-color near-light inner lens group, and is used to form a cutoff line in the cool-color near-light pattern; the second cutoff line structure is located between the reflective element and the warm-color near-light inner lens group, and is used to form a cutoff line in the warm-color near-light pattern.

7. The vehicle headlight structure with warm / cool color light switching function as described in claim 5, characterized in that, Both the first and second light-dark cutoff line structures have multiple inflection points; the focal points of the cool-color near-light inner lens group and the warm-color near-light inner lens group are located at the inflection points of the light-dark cutoff line structures.

8. The vehicle headlight structure with warm / cool color light switching function as described in claim 4, characterized in that, The focal points of the warm-colored high beam inner lens group and the cool-colored high beam inner lens group are located on the same focal plane as the focal points of the cool-colored low beam inner lens group and the warm-colored low beam inner lens group. This focal plane is located between the reflecting element and the inner lens group.

9. The vehicle headlight structure with warm / cool color light switching function as described in claim 1, characterized in that, Each LED assembly consists of an LED chip packaged into a single LED chip.

10. A vehicle, comprising a headlight structure with a warm / cool color light switching function as described in any one of claims 1-9, characterized in that, The housing is provided with multiple fixing brackets around its perimeter, and the fixing brackets are provided with limit holes. The limit holes are used to install the housing onto the vehicle with bolts.

Images