Light guide for vehicle light, vehicle light and vehicle

Abstract

The utility model provides a kind of light guide for vehicle light, vehicle light and vehicle, this kind of light guide includes the first end surface and second end surface being oppositely arranged along the length direction of light guide, and the first side and second side being oppositely arranged along the thickness direction of light guide, second side is formed relative to the light reflection surface of length direction of light guide obliquely extended, this kind of light guide is installed in the inner cavity surrounded by light-shielding member of vehicle light, light emitted by light source enters light guide from first end surface, and is shot from second end surface after propagation in light guide interior, to realize illumination or information indicating function, external light enters light guide from second end surface, and is shot to first end surface after reflection on the light reflection surface of second side, light is reflected on the length direction of light guide along the direction of departing from first end surface after first end surface reflection, and is shot from first side, without additional energy consumption, to strengthen visual identification under strong light of daytime, substantially improve the high-end visual identification of vehicle light on vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a light guide that can be used in vehicle lights. Background Technology

[0002] In automotive exterior design, external lights (such as headlights, taillights, and daytime running lights) not only serve the functions of illumination and signal indication, but also become a core visual area that highlights the vehicle's brand recognition and enhances the overall aesthetics. As a key optical component of external lights, light guides, with their advantages of achieving uniform light transmission and adapting to complex designs, can create a continuous and soft light strip effect, making them an important choice for mainstream automakers to improve the appearance and quality of their lighting fixtures.

[0003] The design of traditional external automotive light guides is gradually showing its limitations. Specifically, existing light guides mostly use a single light-transmitting material and a simple light-emitting structure design, which can only present a single, flat light band appearance. They cannot simulate the multi-faceted refraction and crystal-clear static visual texture of gemstones, making it difficult to meet users' aesthetic demands for a "high-end gemstone-like" appearance of automotive lights. Of course, some existing automotive lights also add multiple light guide structures, refraction components, or independent drive modules inside the lamp to pursue richer appearance effects. This design not only increases the size and weight of the lamp body, but also significantly increases the research and development costs and production complexity, making it difficult to balance appearance and practicality. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem that existing light guides, which mostly use a single light-transmitting material and a simple light-emitting structure design, can only present a single, flat light strip appearance, while adding multiple sets of light guide structures, refractive components or independent drive modules will lead to an increase in the size and weight of the lamp body.

[0005] To solve the above-mentioned technical problems, the present invention discloses a light guide for a vehicle lamp. The light guide includes a first end face and a second end face arranged opposite to each other along the length direction of the light guide, and a first side face and a second side face arranged opposite to each other along the thickness direction of the light guide. A light reflecting surface is formed on the second side face that extends obliquely relative to the length direction of the light guide. A portion of the light guide along its length direction is used to install in the inner cavity formed by the light shield of the vehicle lamp, and the first end face is located in the inner cavity of the light shield, while the second end face is located outside the inner cavity of the light shield.

[0006] In this process, light enters the light guide from the first end face, propagates inside the light guide, and exits from the second end face.

[0007] Light enters the light guide from the second end face, is reflected by the light-reflecting surface on the second side, and then shines towards the first end face. After being reflected by the first end face, the light propagates along the length of the light guide in a direction away from the first end face and exits from the first side.

[0008] Using the above technical solution, this light guide is located in the cavity surrounded by the light shield of the vehicle headlight. The light emitted by the light source inside the headlight enters the light guide from the first end face, and after propagating in the light guide, it is emitted from the second end face, thereby realizing the function of lighting or information indication. In a static state, external light enters the light guide from the second end face. Through the cooperation of the inclined light reflecting surface set on the second side face with the first end face, the light is more easily emitted from the first side face after multiple reflections after entering from the second end face. At the same time, some light is also emitted from the second end face after reflection in the light guide, forming an optical effect similar to the multi-faceted refraction of a gemstone.

[0009] Compared to existing technologies, where only a small portion of light is reflected after passing through the exposed part of the light guide, while the rest is reflected and either emitted from the portion of the light guide blocked by a light-shielding component or emitted into the lamp from within the light guide, the light guide provided by this invention eliminates the need for additional light guide structures and refractive components. It simply forms a light-reflecting surface on the second side of the light guide, extending at an angle relative to the length of the light guide, allowing more light to be emitted from the first side. This improves the transparency of the headlights when stationary, giving them a crystal-clear, gem-like appearance and enhancing the overall high-end visual quality of the vehicle.

[0010] The present invention also discloses a light guide for vehicle lights, wherein the second end face includes a first light-emitting surface and a second light-emitting surface that are inclined to each other, and a first reflective surface corresponding to the first light-emitting surface and a second reflective surface corresponding to the second light-emitting surface are formed on the second side face, and the first reflective surface and the second reflective surface extend inclined to each other.

[0011] In this process, light enters the light guide from the first emitting surface, is reflected by the first reflecting surface, and then shines towards the first end face. After being reflected by the first end face, the light propagates along the length of the light guide in a direction away from the first end face and is emitted from the first side.

[0012] Light enters the light guide from the second emitting surface and is reflected by the second reflecting surface before being directed toward the first end face. After being reflected by the first end face, the light propagates along the length of the light guide in a direction away from the first end face and is emitted from the first side.

[0013] By employing the above technical solution, since the first light-emitting surface, the second light-emitting surface, and the corresponding reflective surface are tilted relative to each other, the reflection paths of the two sets of light rays inside the light guide have different angles. When the light rays finally exit from the first side, they form a multi-directional, multi-regional light distribution, simulating the three-dimensional optical effect of multi-faceted refraction in a gemstone. The superposition of light rays at different angles allows the light guide to exhibit richer levels of brightness and shadow variations in a static state, further enhancing the crystal-clear, gemstone-like appearance and improving the high-end visual recognition of the headlights.

[0014] Furthermore, since the second end face has a first light-emitting surface and a second light-emitting surface that are inclined to each other, multi-dimensional light effects can be achieved without the need to add an independent light guide strip or reflective component. In other words, while improving the richness of light effects, the internal structure layout of the lamp is simplified, the number of parts is reduced, the assembly precision and overall cost of the vehicle lamp are reduced, and the appearance performance and economy are taken into account.

[0015] The present invention also discloses a light guide for vehicle lights, wherein the first light-emitting surface is connected to the edge of the first side surface on one side in the thickness direction of the light guide, and the first light-emitting surface extends outward at an angle relative to the thickness direction of the light guide until the other side edge is connected to the corresponding edge of the second light-emitting surface, and the second light-emitting surface extends at an angle relative to the extension direction of the first light-emitting surface.

[0016] Furthermore, the first reflective surface is connected to the edge of the first end face on one side of the optical guide along the length direction, and the first reflective surface extends outward at an angle relative to the length direction of the optical guide until the other side edge is connected to the corresponding edge of the second reflective surface. The second reflective surface extends inward at an angle relative to the length direction of the optical guide until it is connected to the corresponding edge of the second end face, so that the axial cross section of the second side is V-shaped.

[0017] Using the above technical solution, the first and second luminous surfaces extend outward at an angle relative to the thickness direction. Combined with the double-reflective surface design, which forms a V-shaped cross-section on the second side of the light guide, the light undergoes multi-directional reflections inside the light guide. When emitted from the first side, it creates a light and shadow effect similar to the "multifaceted refraction" of a gemstone, simulating the crystal clarity and three-dimensional texture of a gemstone in a static state. Furthermore, the mutually inclined first and second luminous surfaces give the overall appearance of the light guide a more "cut-like" feel.

[0018] The present invention also discloses a light guide for vehicle lights, which is made of any one of polycarbonate, polymethyl methacrylate or glass.

[0019] Using the above technical solutions, polycarbonate (PC), polymethyl methacrylate (PMMA), or glass all possess high light transmittance, maximizing the retention of light intensity and ensuring the clear presentation of the gem-like light effect and layered dynamic light effect of the light guide. Meanwhile, polycarbonate (PC) has strong impact resistance and adapts to a wide temperature range, making it suitable for complex outdoor working conditions in the automotive industry; polymethyl methacrylate (PMMA) has good processability, facilitating the fabrication of the first and second light-emitting surfaces, as well as the second side surface, which are inclined to each other on the light guide; and glass has excellent optical stability and strong anti-aging properties, making it suitable for scenarios requiring high light effect durability.

[0020] The present invention also discloses a vehicle lamp, including a light source, a light shield, and any of the above-mentioned light guides for vehicle lamps. The light source and the light guide are installed in the inner cavity surrounded by the light shield, and in the length direction of the light guide, the first end face is closer to the light source than the second end face.

[0021] In this process, the light emitted by the light source enters the light guide from the first end face after propagation, and then exits from the second end face after propagation inside the light guide.

[0022] The external light from the headlight enters the light guide from the second end face, and after being reflected by the light reflecting surface, it shines towards the first end face. The light is reflected by the first end face and propagates along the length of the light guide in a direction away from the first end face, and is emitted from the first side face.

[0023] By adopting the above technical solution, the vehicle headlight integrates the light source and the light guide into the inner cavity of the light shield, and arranges the first end face close to the light source to form an active light emission mode in which the light emitted by the light source enters through the first end face of the light guide and exits through the second end face, which meets the basic lighting / signal indication needs at night or in low light environments. At the same time, by utilizing the passive reflection mode in which external light (such as daytime sunlight and oncoming vehicle headlights) enters through the second end face of the light guide and is reflected by the light reflection surface and the first end face and then exits from the first side, visual recognition under strong daylight can be enhanced without additional energy consumption, which greatly improves the high-end visual recognition of the vehicle headlight.

[0024] An embodiment of this utility model also discloses a vehicle lamp, which further includes a reflective structure disposed between the light source and the light guide. The light emitted by the light source is reflected by the reflective structure and then enters the light guide from the first end face.

[0025] Using the above technical solution, the light from the light source is reflected by the reflective structure and enters from the first end face of the light guide and exits from the second end face, which meets the basic requirements for lighting / signal indication at night or in low light environments. Furthermore, the reflective structure can be flexibly designed according to the actual installation distance and angle between the light source and the light guide, reducing the restrictions on the internal space layout of the vehicle headlight and adapting to the lighting design requirements of different vehicle models.

[0026] The present invention also discloses a vehicle lamp, wherein the reflective structure is configured as a reflective bowl. In the length direction of the light guide, the reflective bowl is located on the side of the first end face of the light guide away from the second end face. The light source is located on the side of the reflective bowl in the thickness direction of the light guide, and the reflective bowl has an arc-shaped curved surface that is recessed away from the light guide and the light source.

[0027] The light emitted by the light source is directed toward the curved surface and, after being reflected by the curved surface, enters the light guide from the first end face.

[0028] Using the above technical solution, the reflector bowl has an arc-shaped surface that is concave away from the light guide and the light source. This structure can converge and guide the light emitted by the light source. After the light emitted by the light source hits the arc-shaped surface, it can be reflected by the arc-shaped surface and be directed more concentratedly and accurately to the first end face, improving the utilization rate of light and allowing more light to enter the light guide for propagation, thereby improving the luminous effect of the vehicle headlight.

[0029] The present invention also discloses a vehicle light, wherein multiple reflective grids are arranged in an array on an arc-shaped curved surface.

[0030] Among them, a portion of the multiple reflective grids are attached to the corresponding parts of the curved surface. The light emitted by the light source is directed to the corresponding reflective grid, and after being reflected by the reflective grid, it enters the first end face along the length of the light guide, and after propagating inside the light guide, it exits from the second end face.

[0031] Another part of the multiple reflective grids protrudes or is recessed relative to the corresponding part of the curved surface. The light emitted by the light source is directed toward the corresponding reflective grid, and after being reflected by the reflective grid, it enters the first end face at an angle relative to the length direction of the light guide, and after propagation inside the light guide, it is emitted from the second end face or the first side face.

[0032] By employing the above technical solution, the reflective grid is fitted to the corresponding part of the curved surface, enabling the light emitted by the light source to be reflected and directed relatively regularly along the length of the light guide into the first end face. This precise guidance ensures that the initial propagation direction of the light within the light guide meets the design expectations, providing a foundation for the stable propagation of subsequent light within the light guide and its normal exit from the second end face. This helps to realize the basic lighting or signal indication functions of the vehicle headlights, ensuring that the light propagates along the predetermined path and reducing light scattering and energy loss.

[0033] The other part of the reflective grid protrudes or is recessed relative to the curved surface, which allows the light emitted by the light source to be reflected and enter the first end face at an angle relative to the length direction of the light guide. This changes the propagation path of the light inside the light guide, so that the light can not only be emitted from the second end face, but also from the first side face, thus forming a multi-directional and multi-regional light distribution, widening the illumination area of ​​the headlight, and increasing the brightness of the headlight.

[0034] This utility model also discloses a vehicle light, which includes a light color controller. The light source is set as an RGB lamp, and the light color controller is electrically connected to the RGB lamp. Furthermore, this vehicle light also includes a light color collector, which is electrically connected to the light color controller. The light color collector is located on one side of the light guide in its thickness direction and is used to collect the color of the light within the light guide.

[0035] By employing the above technical solution, the electrical connection between the RGB lamps and the color controller allows for precise control of the RGB lamps' color output in active lighting mode (such as switching between single or mixed colors like red, blue, and green). Furthermore, by positioning the light sensor on one side of the light guide's thickness, it can collect the color parameters (such as color temperature and purity) of the light within the light guide in real time and transmit the data to the color controller. The color controller dynamically adjusts the RGB lamps' emission parameters based on the collected data, preventing color deviations caused by material-specific color differences or light source attenuation. For example, when a decrease in the purity of red light within the light guide is detected, the controller can increase the output power of the RGB lamp's red channel, ensuring a consistently stable color in the light band emitted from the second end face of the light guide. This solves the problem of color distortion after traditional automotive lamp light efficacy attenuation and improves the accuracy of the light's color.

[0036] The present invention also discloses a vehicle including any of the above-mentioned headlights.

[0037] Using the above technical solution, when the vehicle's headlights are illuminating, the light emitted by the light source enters through the first end face of the light guide and exits through the second end face, meeting the basic lighting / signal indication requirements at night or in low-light environments. In a static state, external light (such as daylight or oncoming headlights) enters through the second end face of the light guide, is reflected by the light-reflecting surface and the first end face, and then exits from the first side face. This enhances visual recognition under strong daylight without additional energy consumption, significantly improving the high-end visual recognition of the headlights.

[0038] The beneficial effects of this utility model are as follows:

[0039] This utility model discloses a light guide for vehicle lights. The light guide includes a first end face and a second end face arranged opposite each other along the length direction of the light guide, and a first side face and a second side face arranged opposite each other along the thickness direction of the light guide. A light reflecting surface is formed on the second side face, extending obliquely relative to the length direction of the light guide. A portion of the light guide along its length direction is used to install in the inner cavity formed by the light shield of the vehicle light. The first end face is located in the inner cavity of the light shield, and the second end face is located outside the inner cavity of the light shield. The light emitted from the light source of the vehicle light enters the light guide from the first end face and exits from the second end face of the light guide, meeting the basic lighting / signal indication requirements in nighttime or low-light environments. In a static state, external light (such as daytime sunlight or oncoming vehicle lights) is incident on the second end face of the light guide, reflected by the light reflecting surface and the first end face, and then exits from the first side face. In a static state, it can simulate the crystal clarity and three-dimensional texture of gemstones, enhancing visual recognition under strong daylight without additional energy consumption, and significantly improving the high-end visual recognition of vehicle lights. Attached Figure Description

[0040] Figure 1 A schematic diagram of the structure of a light guide for a vehicle lamp is provided for an embodiment of this utility model;

[0041] Figure 2 Another structural schematic diagram of a light guide for a vehicle lamp is provided for an embodiment of this utility model;

[0042] Figure 3 A schematic diagram of light propagation from the first light-emitting surface in a light guide for a vehicle lamp, provided as an embodiment of this utility model;

[0043] Figure 4 A schematic diagram of light propagation from the second light-emitting surface in a light guide for a vehicle lamp, provided as an embodiment of this utility model;

[0044] Figure 5 A schematic diagram of the structure of a vehicle lamp provided for an embodiment of this utility model;

[0045] Figure 6 A schematic diagram of the reflector grid on the reflector bowl of a vehicle lamp provided for an embodiment of this utility model;

[0046] Figure 7 A schematic diagram of light propagation in the reflector bowl of a vehicle headlight provided for an embodiment of this utility model.

[0047] Explanation of reference numerals in the attached figures:

[0048] 10. Optical guide;

[0049] 110. First end face; 120. Second end face; 121. First light-emitting surface; 122. Second light-emitting surface; 130. First side surface; 140. Second side surface; 141. Light-reflecting surface; 142. First reflective surface; 143. Second reflective surface;

[0050] 20. Light source; 30. Light shield;

[0051] 40. Reflective structure; 410. Reflective bowl; 411. Reflective grid;

[0052] 50. Light color controller; 60. Light color collector;

[0053] Y represents the length direction of the optical guide; X represents the thickness direction of the optical guide. Detailed Implementation

[0054] As mentioned in the background section, existing light guides mostly use a single light-transmitting material and a simple light-emitting structure design, which can only present a single, flat light strip appearance. Adding multiple light guide structures, refractive components, or independent drive modules will increase the size and weight of the lamp.

[0055] Therefore, this utility model provides a light guide for vehicle lights. This light guide includes a first end face and a second end face arranged opposite each other along the length direction of the light guide, and a first side face and a second side face arranged opposite each other along the thickness direction of the light guide. A light-reflecting surface extending obliquely relative to the length direction of the light guide is formed on the second side face. When assembled onto a vehicle light, a portion of the light guide along its length direction is used to install within the cavity enclosed by a light-shielding component of the vehicle light. The first end face is located within the cavity of the light-shielding component, and the second end face is located outside the cavity of the light-shielding component. Light emitted from the light source inside the vehicle light enters the light guide from the first end face, propagates within the light guide, and exits from the second end face, thereby achieving illumination or information indication functions. In a static state, external light enters the light guide from the second end face. Through the cooperation of the oblique light-reflecting surface on the second side face and the first end face, the light entering from the second end face is more easily emitted from the first side face after multiple reflections. Simultaneously, some light is reflected within the light guide and also emitted from the second end face, forming an optical effect similar to the multi-faceted refraction of a gemstone.

[0056] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0057] like Figure 1As shown, in this embodiment, the light guide 10 has a first end face 110 and a second end face 120 disposed opposite each other along its length direction Y, and a first side face 130 and a second side face 140 disposed opposite each other along the thickness direction X of the light guide 10. A light reflecting surface 141 extending obliquely relative to the length direction Y of the light guide is formed on the second side face 140. When assembled onto a vehicle lamp, the first end face 110 is located in the inner cavity of the light shield 30, and the light source 20 on the vehicle lamp (see...) Figure 5 After the emitted light propagates, it enters the light guide 10 from the first end face 110. After propagating within the light guide 10, the light is emitted to the external environment from the second end face 120 located outside the inner cavity of the light shield 30, thereby serving as a lighting or information indication function.

[0058] External light enters the light guide 10 from the second end face 120. Through the cooperation of the inclined light reflecting surface 141 on the second side face 140 and the first end face 110, the light enters from the second end face 120 and is more easily emitted from the first side face 130 after multiple reflections. At the same time, some light is reflected inside the light guide 10 and also emitted from the second end face 120, forming an optical effect similar to the refraction of multiple facets of a gemstone.

[0059] It should be noted that, since vehicle headlights are typically lower than a person's eyes in the vertical direction, to ensure that the light emitted from the first side 130 can enter the person's eyes, the first side 130 is positioned vertically above the second side 140. Regarding the specific structure of the first side 130, it can extend smoothly along the Y-direction parallel to the length of the light guide 10 (see...). Figure 1 It can also form multiple inclined surfaces that extend at an angle relative to the length direction Y of the optical guide 10 (see...). Figure 2 For example, two or three inclined surfaces extending at an angle relative to the length direction Y of the light guide 10 may be provided on the first side 130. This embodiment does not specifically limit this.

[0060] Of course, in special cases, such as when the indicator light used for information indication is located on the roof of the vehicle cabin, and the headlight is vertically higher than a person's eyes, then the first side 130 is vertically located below the second side 140. This embodiment does not limit this to a single case.

[0061] In one embodiment, such as Figure 3 and Figure 4 As shown, the second end face 120 includes a first light-emitting surface 121 and a second light-emitting surface 122 that are inclined to each other. A first reflective surface 142 corresponding to the first light-emitting surface 121 and a second reflective surface 143 corresponding to the second light-emitting surface 122 are formed on the second side surface 140. The first reflective surface 142 and the second reflective surface 143 extend inclined to each other.

[0062] Among them, such as Figure 3As shown, light enters the light guide 10 from the first light-emitting surface 121, and after being reflected by the first reflective surface 142, it is directed toward the first end face 110. After being reflected by the first end face 110, the light propagates in the direction away from the first end face 110 along the length Y of the light guide 10, and is emitted from the first side surface 130.

[0063] like Figure 4 As shown, light enters the light guide 10 from the second light-emitting surface 122, and after being reflected by the second reflective surface 143, it is directed toward the first end face 110. After being reflected by the first end face 110, the light propagates in the direction away from the first end face 110 along the length Y of the light guide 10, and is emitted from the first side surface 130.

[0064] In this embodiment, because the first light-emitting surface 121, the second light-emitting surface 122, and the corresponding reflective surface are tilted relative to each other, the reflection paths of the two sets of light rays inside the light guide 10 have different angles. When the light rays finally exit from the first side 130, they will form a multi-directional and multi-regional light distribution, simulating the three-dimensional optical effect of multi-faceted refraction of a gemstone. The superposition of light rays at different angles makes the light guide 10 present a richer level of brightness and shadow changes in a static state, further enhancing the crystal-clear gemstone-grade appearance and improving the high-end visual recognition of the headlights.

[0065] Furthermore, since the second end face 120 has a first light-emitting surface 121 and a second light-emitting surface 122 that are inclined to each other, multi-dimensional light effects can be achieved without the need to add an independent light guide strip or reflective component. In other words, while improving the richness of light effects, the internal structure layout of the lamp is simplified, the number of parts is reduced, the assembly precision and overall cost of the vehicle lamp are reduced, and the appearance performance and economy are taken into account.

[0066] More specifically, in this embodiment, the first light-emitting surface 121 connects to the edge of the first side surface 130 on one side of the thickness direction X of the light guide 10, and the first light-emitting surface 121 extends outward at an angle relative to the thickness direction X of the light guide 10 until its other side edge connects to the corresponding edge of the second light-emitting surface 122. The second light-emitting surface 122 extends at an angle relative to the extension direction of the first light-emitting surface 121. To improve the light emission effect, microstructures (laser dots, microprisms, silkscreen stripes) are provided on the first light-emitting surface 121 and the second light-emitting surface 122. The microstructures disrupt the total internal reflection condition, ensuring that light can be fully emitted from the light-emitting surface of the light guide 10. Of course, laser dots, microprisms, or silkscreen stripes can also be provided on both the first side surface 130 and the second end surface 120.

[0067] Furthermore, the first reflective surface 142 is connected to the edge of the first end face 110 on one side of the optical guide 10 along the length direction Y, and the first reflective surface 142 extends outward at an angle relative to the length direction Y of the optical guide 10 until the other side edge is connected to the corresponding edge of the second reflective surface 143. The second reflective surface 143 extends inward at an angle relative to the length direction Y of the optical guide 10 until it is connected to the corresponding edge of the second end face 120, so that the axial cross section of the second side surface 140 is V-shaped. The axial cross section of the second side surface 140 refers to the shape formed by cutting along the thickness direction X of the optical guide 10 in the length direction Y of the optical guide 10.

[0068] The first emitting surface 121 extends obliquely outward relative to the thickness direction X of the light guide 10, meaning that in the thickness direction X of the light guide 10, the first emitting surface 121 extends obliquely in a direction away from the first end face 110. Similarly, the first reflecting surface 142 extends obliquely outward relative to the length direction Y of the light guide 10, meaning that in the length direction Y of the light guide 10, the first reflecting surface 142 extends obliquely from the side of the first end face 110 in a direction away from the first side face 130. The second emitting surface extends obliquely outward relative to the length direction Y of the light guide 10, meaning that in the length direction Y of the light guide 10, the second reflecting surface 143 extends obliquely from the side near the first emitting surface in a direction near the first side face 130. When this light guide 10 is assembled onto the light shield 30, because the axial cross-section on the second side face 140 is V-shaped, and the axial dimension of the light guide 10 on the side of the second end face 120 is easily larger than the axial dimension of the first end face 110 as a result (see...). Figure 2 Since the light guide 10 cannot be embedded into the light shield 30 from the inner cavity side, the first end face 110 of the light guide 10 needs to be embedded into the light shield 30 from the outer side of the inner cavity.

[0069] In this embodiment, because the first light-emitting surface 121 and the second light-emitting surface 122 extend outward at an angle relative to the thickness direction X of the light guide 10, and in conjunction with the double-reflective surface design of the second side surface 140 forming a V-shaped axial cross-section with the first reflective surface 142 and the second reflective surface 143, light is reflected in multiple directions inside the light guide 10 and then emitted from the first side surface 130, forming a light and shadow effect similar to the "multifaceted refraction" of a gemstone. In a static state, it can simulate the crystal clarity and three-dimensional texture of a gemstone. Furthermore, the first light-emitting surface 121 and the second light-emitting surface 122, which extend at an angle to each other, give the overall appearance of the light guide 10 a more "cut-like" feel.

[0070] It should be noted that the tilt angle of the first reflective surface 142 relative to the length direction Y of the light guide 10 is designed based on the tilt angle of the first emitting surface 121 relative to the thickness direction X of the light guide 10, and the tilt angle of the second reflective surface 143 relative to the length direction Y of the light guide 10 is designed based on the tilt angle of the second emitting surface 122 relative to the thickness direction X of the light guide 10. Based on the principle of total internal reflection, this ensures that as much light as possible enters the light guide 10 from the emitting surface, is reflected by the corresponding reflective surface, and then reflected by the second end face 120. Finally, the light is emitted from the first side face 130 along the length direction Y of the light guide 10 away from the first end face 110, thereby increasing the quantity and richness of light perceived by the human eye.

[0071] Of course, the structure on the second end face 120 is not limited to the first light-emitting surface 121 and the second light-emitting surface 122. Those skilled in the art can design it according to the actual situation and specific needs. For example, only one light-emitting surface or three light-emitting surfaces can be set on the second end face 120, and the light-reflecting surface 141 on the second side face 140 can be adjusted accordingly. This embodiment does not limit it to a single one.

[0072] In existing technologies, the optical guide 10 typically has two sides extending along the length Y direction on both sides, such as... Figure 3 and Figure 4 As shown by the dotted line, after the external light passes through the exposed part of the light guide 10, the light is reflected and then emitted from the part of the light guide 10 that is blocked by the light shield 30, or emitted from the light guide 10 toward the lamp. This results in the static visual quality of the car lights being rather ordinary, which obviously cannot meet the user's aesthetic demand for the "high-end gemstone" appearance of the car lights.

[0073] More specifically, in this embodiment, the light guide 10 can be made of any one of polycarbonate, polymethyl methacrylate (PMMA), or glass. All three materials have high light transmittance, which can retain light intensity to the maximum extent and ensure the clear presentation of the gem-like light effect and layered dynamic light effect of the light guide 10. At the same time, polycarbonate (PC) has strong impact resistance and adapts to a wide temperature range, making it suitable for complex outdoor working conditions in automobiles. Polymethyl methacrylate (PMMA) has good processing and molding properties, making it easy to process the first light-emitting surface 121 and the second light-emitting surface 122, as well as the second side surface 140, which are inclined to each other on the light guide 10. Glass has excellent optical stability and strong anti-aging properties, making it suitable for scenarios with high requirements for light effect durability.

[0074] like Figure 5As shown, an embodiment of the present invention also discloses a vehicle lamp, including a light source 20, a light shield 30, and any of the above-mentioned light guides 10 for vehicle lamps. The light source 20 and the light guide 10 are installed in the inner cavity surrounded by the light shield 30, and in the length direction Y of the light guide 10, the first end face 110 is closer to the light source 20 than the second end face 120.

[0075] In this embodiment, for ease of understanding, the first side 130 is located vertically on the second side 140. The light emitted by the light source 20 enters the light guide 10 from the first end face 110 and exits from the second end face 120 after propagation inside the light guide 10.

[0076] The external light from the headlight enters the light guide 10 from the second end face 120 and is reflected by the light reflecting surface 141 before being directed toward the first end face 110. The light is reflected by the first end face 110 and propagates along the length Y direction of the light guide 10 away from the first end face 110, and is emitted from the first side face 130.

[0077] The vehicle headlights integrate the light source 20 and the light guide 10 into the inner cavity of the light shield 30, with the first end face 110 close to the light source 20. This arrangement forms an active light-emitting mode where the light emitted by the light source 20 enters through the first end face 110 of the light guide 10 and exits through the second end face 120, meeting the basic lighting / signal indication needs in nighttime or low-light environments. At the same time, by utilizing external light (such as daytime sunlight or oncoming vehicle headlights) entering through the second end face 120 of the light guide 10, and being reflected by the light reflector 141 and the first end face 110, the light headlights can be emitted from the first side face 130 without additional energy consumption, thus enhancing visual recognition under strong daylight and significantly improving the high-end visual recognition of the vehicle headlights.

[0078] In this embodiment, as Figure 5 As shown, the vehicle headlight also includes a reflective structure 40 disposed between the light source 20 and the light guide 10. The light emitted by the light source 20 is reflected by the reflective structure 40 and then enters the light guide 10 from the first end face 110.

[0079] During use, the light from the light source 20 is reflected by the reflective structure 40 and enters from the first end face 110 of the light guide 10 and exits from the second end face 120, meeting the basic lighting / signal indication requirements in nighttime or low-light environments. Furthermore, the reflective structure 40 can be flexibly designed according to the actual installation distance and angle between the light source 20 and the light guide 10, reducing the restrictions on the internal space layout of the vehicle headlight and adapting to the lighting design requirements of different vehicle models.

[0080] More specifically, the reflective structure 40 is configured as a reflective bowl 410. In the length direction Y of the light guide 10, the reflective bowl 410 is located on the side of the first end face 110 of the light guide 10 away from the second end face 120. The light source 20 is located on the side of the reflective bowl 410 in the thickness direction X of the light guide 10. The reflective bowl 410 has an arc-shaped curved surface that is recessed away from the light guide 10 and the light source 20.

[0081] The light emitted by the light source 20 is directed toward the curved surface and, after being reflected by the curved surface, enters the light guide 10 from the first end face 110.

[0082] Therefore, in this embodiment, the reflector bowl 410 has an arc-shaped surface that is recessed away from the light guide 10 and the light source 20. This structure can converge and guide the light emitted by the light source 20. After the light emitted by the light source 20 is reflected by the arc-shaped surface, it can be more concentrated and accurately directed to the first end face 110, thereby improving the utilization rate of light and allowing more light to enter the light guide 10 for propagation, thus improving the luminous effect of the vehicle lamp.

[0083] In one embodiment, a plurality of reflective grids 411 are arranged in an array on the curved surface. For example, 20, 46, 60 or other numbers of reflective grids 411 are provided on the curved surface. The number of reflective grids 411 can be determined according to the area and shape of the curved surface. This embodiment does not make a specific limitation on this.

[0084] Among them, such as Figure 6 and Figure 7 As shown, a portion of the multiple reflective grids 411 are attached to corresponding parts of the curved surface. The light emitted by the light source 20 is directed onto the corresponding reflective grid 411 and, after being reflected by the reflective grid 411, enters the first end face 110 along the length Y of the light guide 10. After propagation inside the light guide 10, it exits from the second end face 120. This precise guidance ensures that the initial propagation direction of the light in the light guide 10 meets the design expectations, providing a foundation for the stable propagation of the light inside the light guide 10 and its normal exit from the second end face 120. This helps to realize the basic lighting or signal indication functions of the vehicle lights, ensuring that the light propagates along the predetermined path and reducing light scattering and energy loss.

[0085] Another portion of the multiple reflective grids 411 protrudes or is recessed relative to the corresponding part of the curved surface. The light emitted by the light source 20 is directed toward the corresponding reflective grid 411 and, after being reflected by the reflective grid 411, is obliquely incident on the first end face 110 relative to the length direction Y of the light guide 10. After propagation inside the light guide 10, it is emitted from the second end face 120 or the first side face 130, thereby changing the propagation path of the light inside the light guide 10. This allows the light to not only be emitted from the second end face 120 but also from the first side face 130, thus forming a multi-directional and multi-regional light distribution, widening the illumination area of ​​the vehicle headlight, and increasing the brightness of the vehicle headlight.

[0086] It should be noted that the number of reflective grids 411 that are attached to the corresponding part of the curved surface should be greater than the number of reflective grids 411 that protrude or recede relative to the corresponding part of the curved surface, so as to ensure that the headlights can achieve basic lighting or signal indication functions. The few reflective grids 411 that protrude or recede relative to the corresponding part of the curved surface mainly serve to widen the headlight illumination area.

[0087] Of course, the reflective structure 40 is not limited to the reflective bowl 410 in the above embodiment. It can also be a plane reflector or a parabolic reflector, etc. This embodiment does not limit it to a single one.

[0088] In this embodiment, the light shield 30 may include the decorative ring, housing, and other structures that can shield light from the vehicle headlight, providing a closed installation space for the light source 20, the light guide 10, and the reflective structure 40. This can reduce the leakage loss of light from the light source 20 during propagation, ensure that more light enters the light guide 10 and is efficiently emitted from the second end face 120, and improve the brightness and concentration of active light emission. On the other hand, when external light is incident through the second end face 120, the light shield 30 can block stray light interference, allowing the external light to be guided more accurately to the light reflective surface 141.

[0089] More specifically, the light source 20 is directly fixed to the upper housing of the light-shielding member 30. The light guide 10 can have an extension plate formed on its first end face 110, extending away from the second end face 120 along the length Y direction of the light guide 10, and is fixed to the upper housing of the light-shielding member 30 via the extension plate. Similarly, the lower end of the reflector bowl 410 can have a connecting portion extending towards the light guide 10 along the length Y direction of the light guide 10, and is fixed to the lower housing of the light-shielding member 30 via the connecting portion. The specific method by which the light source 20, the light guide 10, and the reflector bowl 410 are fixed to the housing is not limited to adhesive, screw, or snap-fit ​​methods; this embodiment does not impose specific limitations on these methods.

[0090] In this embodiment, the light source 20 is set as an RGB lamp, and the vehicle lamp also includes a lamp color controller 50, which is electrically connected to the RGB lamp. The RGB lamp supports 256 colors of light output.

[0091] Furthermore, this type of vehicle headlight also includes a light color collector 60, which is electrically connected to the headlight color controller 50. The light color collector 60 is located on one side of the light guide 10 in its thickness direction X, and is used to collect the color of the light within the light guide 10.

[0092] When this type of vehicle headlight is in use, the RGB lights are electrically connected to the color controller 50, allowing the active light-emitting mode to precisely control the color output of the RGB lights (such as switching between single or mixed colors like red, blue, and green). The light color sensor 60 is positioned on the X-side of the light guide 10's thickness direction, enabling real-time acquisition of color parameters (such as color temperature and color purity) within the light guide 10, which is then transmitted to the color controller 50. The color controller 50 dynamically adjusts the RGB light emission parameters based on the acquired data, avoiding color deviations caused by material-specific color differences (especially those from polycarbonate (PC) and polymethyl methacrylate (PMMA)) or attenuation of the light source 20. For example, when a decrease in the purity of red light within the light guide 10 is detected, the controller can increase the output power of the RGB light's red channel, ensuring a consistently stable color in the light band emitted from the second end face 120 of the light guide 10. This solves the problem of color distortion after the attenuation of traditional vehicle headlight effects, improving the accuracy of the light color.

[0093] More specifically, the light color collector 60 collects the color parameters of the light within the light guide 10 and transmits the data to the light color controller 50. The light color controller 50 compares the input and feedback differences of the three signals R (red), G (green), and B (blue) using an algorithm, and then proportionally increases the input of the three signals to supplement them, making the actual light color closer to the target light color, for example, A cd / m 2 (Candela per square meter, a unit of brightness) represents the maximum output capability of the R (red) channel of an RGB LED, in B cd / m². 2 The maximum output capability of the G (green) channel of the RGB LED is C cd / m 2 This represents the maximum output capability of the B (blue) channel of the RGB LED, where the target brightness of the R (red) channel is 50% * A cd / m². 2 (candela per square meter), while the actual brightness of the 60-feedback R (red) light collector is 40% * A cd / m². 2 After calibration and replenishment, the output brightness of R (red) is 62.50% Acd / m². 2 The target brightness for G (green) is 35% * B cd / m². 2The actual brightness of the light color sensor 60, which feeds back G (green), is 30% * B cd / m². 2 After calibration and replenishment, the output brightness of G (green) is 40.80% * B cd / m². 2 The target brightness of B (blue) is 20% * C cd / m 2 (candela per square meter), while the actual brightness of the light color collector 60 feedback B (blue) is 15%*C cd / m 2 After calibration and replenishment, the output brightness of B (blue) is 26.70% * C cd / m². 2 Under this compensation, even if the light color of the plastic material light guide 10 deviates from that of the glass material light guide 10, it will not have a significant impact on the final emitted light color.

[0094] Of course, during the design phase, the loss of specific colors by the light guide 10 and the reflective structure 40 under stable production process conditions can be calibrated through experimental means. Then, color compensation can be performed by adjusting the color of the light guide 10 itself, which can reduce costs while ensuring color accuracy.

[0095] Regarding the light source 20 of the vehicle headlights, it can be not only an RGB light, but also an LED light, a laser light, or a xenon light, etc. This embodiment does not limit it to a single one.

[0096] An embodiment of this utility model also discloses a vehicle including any of the above-described vehicle lights.

[0097] When the vehicle's headlights are illuminating, the light source 20 emits light that enters through the first end face 110 of the light guide 10 and exits through the second end face 120, meeting the basic lighting / signal indication requirements at night or in low-light environments. In a static state, external light (such as daylight or oncoming headlights) enters through the second end face 120 of the light guide 10, is reflected by the light reflecting surface 141 and the first end face 110, and then exits from the first side face 130. This enhances visual recognition under strong daylight without additional energy consumption, significantly improving the high-end visual recognition of the headlights.

[0098] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. In order to provide a deep understanding of this utility model, many specific details are included in the above description, and this utility model may also be implemented without using these details. In addition, in order to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0099] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0100] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0101] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0102] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0103] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A light guide for vehicle lights, characterized in that, The light guide includes a first end face and a second end face disposed opposite to each other along the length direction of the light guide, and a first side face and a second side face disposed opposite to each other along the thickness direction of the light guide. A light-reflecting surface extending obliquely relative to the length direction of the light guide is formed on the second side face. A portion of the light guide along its length direction is used for mounting within an inner cavity formed by a light-shielding component of the vehicle lamp, with the first end face located within the inner cavity of the light-shielding component and the second end face located outside the inner cavity of the light-shielding component. Light enters the light guide from the first end face, propagates inside the light guide, and exits from the second end face; Light enters the light guide from the second end face, and after being reflected by the light-reflecting surface on the second side, it is directed toward the first end face. The light is reflected by the first end face and propagates along the length of the light guide in a direction away from the first end face, and is emitted from the first side.

2. The light guide for vehicle lights as described in claim 1, characterized in that, The second end face includes a first light-emitting surface and a second light-emitting surface that are inclined to each other. A first reflective surface corresponding to the first light-emitting surface and a second reflective surface corresponding to the second light-emitting surface are formed on the second side surface. The first reflective surface and the second reflective surface extend inclined to each other. Light enters the light guide from the first light-emitting surface, and after being reflected by the first reflective surface, it is directed toward the first end face. The light is reflected by the first end face and propagates along the length of the light guide in a direction away from the first end face, and is emitted from the first side face. Light enters the light guide from the second light-emitting surface, and after being reflected by the second reflective surface, it is directed toward the first end face. The light is reflected by the first end face and propagates along the length of the light guide in a direction away from the first end face, and is emitted from the first side.

3. The light guide for vehicle lights as described in claim 2, characterized in that, The first emitting surface connects to the edge of the first side surface on one side in the thickness direction of the light guide, and the first emitting surface extends obliquely outward relative to the thickness direction of the light guide until its other side edge connects to the corresponding edge of the second emitting surface. The second emitting surface extends obliquely relative to the extending direction of the first emitting surface; and... The first reflective surface is connected to the edge of the first end face on one side of the optical guide along the length direction, and the first reflective surface extends outward at an angle relative to the length direction of the optical guide until the other side edge is connected to the corresponding edge of the second reflective surface. The second reflective surface extends inward at an angle relative to the length direction of the optical guide until it is connected to the corresponding edge of the second end face, so that the axial cross-section of the second side is V-shaped.

4. The light guide for vehicle lights as described in any one of claims 1 to 3, characterized in that, The light guide is made of any one of the following materials: polycarbonate, polymethyl methacrylate, or glass.

5. A vehicle light, comprising a light source and a light shield, characterized in that, It also includes a light guide for a vehicle lamp as described in any one of claims 1 to 4, wherein the light source and the light guide are mounted in the cavity enclosed by the light shield, and in the length direction of the light guide, the first end face is closer to the light source than the second end face; wherein, The light emitted by the light source enters the light guide from the first end face after propagation, and exits from the second end face after propagation inside the light guide; The external light from the vehicle headlight enters the light guide from the second end face, and after being reflected by the light reflecting surface, it is directed toward the first end face. The light is reflected by the first end face and propagates along the length of the light guide in a direction away from the first end face, and is emitted from the first side.

6. The vehicle light as described in claim 5, characterized in that, The vehicle headlight also includes a reflective structure disposed between the light source and the light guide; wherein... The light emitted by the light source is reflected by the reflective structure and then enters the light guide from the first end face.

7. The vehicle light as described in claim 6, characterized in that, The reflective structure is configured as a reflective bowl. In the length direction of the light guide, the reflective bowl is located on the side of the first end face of the light guide away from the second end face. The light source is located on the side of the reflective bowl in the thickness direction of the light guide. The reflective bowl has an arc-shaped curved surface that is recessed away from the light guide and the light source. The light emitted by the light source is directed toward the arc-shaped surface and, after being reflected by the arc-shaped surface, enters the light guide from the first end face.

8. The vehicle light as described in claim 7, characterized in that, The curved surface is provided with multiple reflective grids arranged in an array; wherein, A portion of the multiple reflective grids are attached to the corresponding parts of the arc-shaped surface. The light emitted by the light source is directed toward the corresponding reflective grid, and after being reflected by the reflective grid, it enters the first end face along the length direction of the light guide, and after propagation inside the light guide, it exits from the second end face. Another portion of the multiple reflective grids protrudes or is recessed relative to the corresponding part of the arcuate surface. The light emitted by the light source is directed toward the corresponding reflective grid, and after being reflected by the reflective grid, it enters the first end face at an angle relative to the length direction of the light guide, and after propagation inside the light guide, it exits from the second end face or the first side face.

9. The vehicle lamp as described in any one of claims 5 to 8, characterized in that, The vehicle headlights also include a light color controller, the light source is set to RGB lights, and the light color controller is electrically connected to the RGB lights; and... The vehicle headlight also includes a light color collector, which is electrically connected to the headlight color controller. The light color collector is located on one side of the light guide in its thickness direction and is used to collect the color of the light within the light guide.

10. A vehicle, characterized in that, Including the vehicle lights as described in any one of claims 5 to 9.

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