Vehicle lamp and vehicle
By combining a light guide plate and a light-diffusing film, the problem of large space occupied by the light source component in the vehicle logo light is solved, realizing the miniaturization and uniform light output of the vehicle logo light, and reducing cost and complexity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MIND ELECTRONICS APPLIANCE CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-17
AI Technical Summary
The light source components in existing car logo lights occupy a large space, making it difficult to achieve miniaturization. Furthermore, the design of the light source components and the lampshade with light diffusion materials affects the uniformity of light.
The light guide plate and the light uniform film are combined to form a light-inlet surface area smaller than the light-outlet surface. The light source component is set opposite to the light-inlet surface, and the light is evenly distributed through the light guide plate and the light uniform film, which reduces the space occupied by the light source component in the mounting cavity.
It achieves a miniaturized design for vehicle logo lights while ensuring uniform light output, reducing the number of light source components and manufacturing costs, and simplifying the manufacturing and maintenance process.
Smart Images
Figure CN224135717U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle lighting technology, and in particular to a vehicle lighting and vehicle. Background Technology
[0002] Currently, most common car logo lights use a lampshade design with a direct light source component and a light-diffusing material. That is, the light source component is located directly behind the lampshade so that the light emitted by the light source component can be directly emitted through the lampshade.
[0003] However, in order to ensure the uniformity of the illumination of the logo light, the light source component needs to occupy a large space inside the logo light, which is not conducive to the miniaturization design of the logo light. Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a vehicle headlight and vehicle in which the area of the light-intake surface is smaller than the area of the light-emitting surface, and the light source component is arranged opposite to the light-intake surface, so that the light source component does not need to occupy a large space in the installation, and the light emitted by the light source component can achieve a uniform light emission effect through the light guide plate and the light-diffusing film, which facilitates the miniaturization design of the vehicle headlight.
[0005] According to a first aspect of the present invention, a vehicle lamp includes: a housing, a light source assembly, and an optical element. The housing includes a lamp housing and a lamp cover, which cooperate to define a mounting cavity. The light source assembly is disposed in the mounting cavity. The optical element includes a light guide plate and a light-diffusing film, which are separately disposed. The light guide plate includes a reflective surface and a light-emitting surface, as well as a light-incoming surface connecting the reflective surface and the light-emitting surface. A reflective structure is provided on the reflective surface. The light-emitting surface is disposed opposite to the light-diffusing film, and the light-incoming surface is disposed opposite to the light source assembly. The area of the light-incoming surface is smaller than the area of the light-emitting surface. The reflective structure is configured such that light reflected by the reflective structure enters the light-diffusing film through the light-emitting surface. The light-diffusing film is disposed between the lamp cover and the light guide plate.
[0006] According to the vehicle lamp of this utility model embodiment, the area of the light-intake surface is smaller than the area of the light-emitting surface. Since the light-intake surface is positioned opposite the light source assembly, the light-emitting area of the light source assembly is also smaller than the area of the light-emitting surface. This prevents the light source assembly from occupying a large space within the mounting cavity. Simultaneously, the light emitted by the light source assembly enters the light guide plate through the light-intake surface. The light undergoes repeated total internal reflections within the light guide plate until it contacts the reflective structure. The reflective structure alters the direction of the light, allowing the reflected light to pass through the light-emitting surface and enter the light-diffusing film. The light-diffusing film then utilizes its own properties to achieve uniform light distribution. Therefore, the light emitted by the light source assembly achieves a uniform light emission effect through the light guide plate and the light-diffusing film, and the light source assembly occupies a small space within the mounting cavity, facilitating the miniaturization design of the vehicle lamp.
[0007] In some embodiments, the light guide plate is formed as a plate-like structure, with the reflective surface and the light-emitting surface arranged opposite to each other along the thickness direction of the light guide plate, and the lamp housing and lamp shade fitting together along the thickness direction of the light guide plate. The thickness of the light guide plate is t1, the thickness of the light-diffusing film is t2, 2mm≤t1≤4mm, and t2≤1mm; and / or, the light guide plate is formed as a strip, with the light-incoming surface located at the end of the light guide plate along its length direction.
[0008] In some embodiments, the projected area of the reflective structure on the reflective surface is larger than the area of the light-incoming surface, and on the reflective surface, the orthographic projection of the reflective structure is located within the outer contour of the orthographic projection of the uniform light film.
[0009] In some embodiments, the light guide plate is formed into an elongated strip shape, and the reflective structure and the light-incoming surface are spaced apart along the length direction of the light guide plate. The area of the light-incoming surface is smaller than the projected area of the reflective structure on the reflective surface. The reflective structure includes a plurality of reflective units, which are spaced apart along the length direction of the light guide plate. Each reflective unit includes a plurality of reflective portions spaced apart along the width direction of the light guide plate. The reflective portions are formed as protrusions or concave points, and the cross-section of the reflective portions is arc-shaped or prismatic, with the cross-section perpendicular to the width direction of the light guide plate.
[0010] In some embodiments, the reflective structure is configured to satisfy at least one of the following conditions: a plurality of reflective units are arranged at equal intervals; a plurality of reflective portions of two adjacent reflective units are staggered in the width direction of the light guide plate; there is one light-incoming surface, and the interval between two adjacent reflective units decreases in the direction away from the light-incoming surface; there is one light-incoming surface, and the dimensions of the plurality of reflective portions in the length direction of the light guide plate decrease in the direction away from the light-incoming surface.
[0011] In some embodiments, the lamp housing forms a limiting groove with the opening of the limiting groove facing the light guide plate. The light guide plate includes a main body and at least one positioning part. The light-inlet surface, the light-outlet surface, and the reflective surface are all formed on the main body. The positioning part is connected to the outer edge of the main body and is adapted to be inserted into and positioned in the limiting groove through the opening of the limiting groove.
[0012] In some embodiments, the main body is formed in the shape of an elongated strip, and the positioning parts are multiple and spaced apart along a direction perpendicular to the length of the main body, each positioning part being connected to the main body; and / or, the vehicle lamp further includes at least one first fastener, the first fastener passing through the positioning part and detachably connecting the light guide plate and the lamp housing.
[0013] In some embodiments, the light guide plate is formed in an elongated shape, and the mounting cavity includes a first chamber and a second chamber. The dimensions of the second chamber in the first direction and the second direction are respectively larger than those of the first chamber. The dimension of the second chamber in the second direction is larger than its dimension in the first direction. At least a portion of the light guide plate is disposed in the first chamber. The first direction is perpendicular to the second direction, and both are perpendicular to the length direction of the light guide plate. The light source assembly is disposed in the second chamber and includes a light source carrier plate and a light source component. The light source carrier plate includes a first mounting portion, a second mounting portion, and a third mounting portion arranged sequentially along the second direction. The light source component is disposed in the second mounting portion. At least one of the first mounting portion and the third mounting portion is detachably connected to the housing by a second fastener.
[0014] In some embodiments, the lampshade is a transparent or semi-transparent plastic part, and the inner surface of the lampshade is provided with a metal coating, a portion of which is a semi-transparent coating; or, a micro-carved light-transmitting structure is formed on the metal coating, so that the metal coating includes a light-transmitting area and a non-light-transmitting area.
[0015] The vehicle according to a second aspect of the present invention includes headlights according to a first aspect of the present invention.
[0016] According to the embodiments of the present invention, by adopting the above-mentioned headlights, the overall size of the headlights is small, which is less likely to affect the layout of various components inside the vehicle, so that the design of the vehicle can be more flexible.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0019] Figure 1 This is a schematic diagram of a vehicle headlight according to some embodiments of the present utility model;
[0020] Figure 2 yes Figure 1 Another schematic diagram of the vehicle lights shown;
[0021] Figure 3 yes Figure 2 The AA section view shown;
[0022] Figure 4 yes Figure 3 Enlarged view of point A shown;
[0023] Figure 5 yes Figure 2 The BB cross-sectional view shown;
[0024] Figure 6 yes Figure 1 An exploded view of the vehicle's headlights shown;
[0025] Figure 7 yes Figure 6 Enlarged view of point B shown;
[0026] Figure 8 yes Figure 1 Another exploded view of the headlights shown;
[0027] Figure 9 This is a schematic diagram of a vehicle according to some embodiments of the present invention.
[0028] Attached reference numerals: Headlights 100, Vehicle 200
[0029] Housing 1, lamp housing 10, limiting groove 10a, lamp shade 11, mounting cavity 12, first chamber 12a, second chamber 12b, light source assembly 2, light source carrier plate 20, first mounting part 20a, second mounting part 20b, third mounting part 20c.
[0030] Optical element 3, light guide plate 30, reflective surface 31, reflective structure 32, reflective unit 32a, reflective part 32b, light emitting surface 33, light entering surface 34, light homogenizing film 35, main body part 36, positioning part 37. Detailed Implementation
[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.
[0033] Hereinafter, with reference to the accompanying drawings, a vehicle light 100 according to a first aspect embodiment of the present invention will be described.
[0034] like Figures 1-8As shown, the vehicle lamp 100 includes: a housing 1, a light source assembly 2, and an optical element 3. The housing 1 includes a lamp housing 10 and a lamp cover 11, which cooperate to define a mounting cavity 12. The light source assembly 2 is disposed in the mounting cavity 12. The optical element 3 includes a light guide plate 30 and a light-diffusing film 35, which are separately disposed. The light guide plate 30 includes a reflective surface 31 and a light-emitting surface 33, as well as a light-incoming surface 34 connecting the reflective surface 31 and the light-emitting surface 33. A reflective structure 32 is provided on the reflective surface 31. The light-emitting surface 33 is disposed opposite to the light-diffusing film 35, and the light-incoming surface 34 is disposed opposite to the light source assembly 2. The area of the light-incoming surface 34 is smaller than the area of the light-emitting surface 33. The reflective structure 32 is configured such that the light reflected by the reflective structure 32 enters the light-diffusing film 35 through the light-emitting surface 33. The light-diffusing film 35 is disposed between the lamp cover 11 and the light guide plate 30. It is understandable that both the light guide plate 30 and the light uniform film 35 are optically dense media relative to air.
[0035] As can be seen, the light guide plate 30 includes a reflective surface 31, a light-emitting surface 33, and a light-entering surface 34. The light-entering surface 34 is arranged opposite to the light source assembly 2. When the light emitted by the light source assembly 2 enters the interior of the light guide plate 30 through the light-entering surface 34, some of the light can undergo total internal reflection inside the light guide plate 30, that is, the incident angle of the light is greater than the critical angle of the light. When the above-mentioned part of the light comes into contact with the reflective structure 32, the light reflected by the reflective structure 32 can change the incident angle of the light so that the light will not undergo total internal reflection at the light-emitting surface 33. Then the reflective structure 32 can destroy the total internal reflection in the light guide plate 30. At this time, the light can pass through the light-emitting surface 33 and enter the light-diffusing film 35. Then, by utilizing the characteristics of the light-diffusing film 35 itself, that is, the light-diffusing film 35 has an optical microstructure inside, the light-diffusing film 35 can convert the point light source or the line light source into a uniform surface light source, so as to achieve a uniform distribution of light and improve the display effect of the vehicle lamp 100.
[0036] It is understood that there can be one or more light-inlet surfaces 34, and at the same time, there can also be one or more light source components 2. Multiple light source components 2 are set one-to-one with multiple light-inlet surfaces 34 so that the vehicle lamp 100 can have a more uniform light output effect.
[0037] In this design, the light-inlet surface 34 is positioned opposite to the light source component 2, and the area of the light-inlet surface 34 is smaller than the area of the light-outlet surface 33. Consequently, the light-outlet area of the light source component 2 is also smaller than the area of the light-outlet surface 33. The area that the light emitted by the light source component 2 needs to cover is relatively small, which helps to reduce the number of light source components such as LED beads used in the light source component 2 and lowers the cost of the vehicle lamp 100. At the same time, the light source component 2 does not need to occupy a large space in the mounting cavity 12. The light emitted by the light source component 2 can achieve uniform light distribution by passing through the light guide plate 30 and the light uniform film 35, which is conducive to the miniaturization design of the vehicle lamp 100.
[0038] For example, when the vehicle light 100 is used as a vehicle logo light in the vehicle 200, in related technologies, vehicle logo lights are mostly designed with a lampshade that uses a light source component for direct projection and a light-diffusing material. That is, the light source component is located directly behind the lampshade so that the light emitted by the light source component can be directly emitted through the lampshade. In order to ensure the uniformity of the illumination of the vehicle logo light, the light source component needs to occupy a large space inside the vehicle logo light. However, in this application, the light source component 2 is arranged opposite to the light-incoming surface 34, and the uniform distribution of light is achieved through the light guide plate 30 and the light-diffusing film 35. The light source component 2 does not need to occupy a large space inside the vehicle logo light, which facilitates the miniaturization design of the vehicle logo light, so that the vehicle logo light of this application can be applied to more different vehicle models.
[0039] Furthermore, the light guide plate 30 and the light-diffusing film 35 are separately configured to simplify their molding process. Compared to integrating the light guide plate and the light-diffusing film into a single unit, during the manufacturing of the light guide plate and the light-diffusing film, in order to ensure total internal reflection between the light guide plate and the light-diffusing film after the light enters the light guide plate, resulting in a more uniform light distribution, the refractive index of the light guide plate needs to be greater than that of the light-diffusing film. Since the light guide plate needs to be an optically denser medium relative to the light-diffusing film, the refractive index of the material used to manufacture the light guide plate must be greater than that of the material used to manufacture the light-diffusing film. This places significant limitations on the materials used for the light guide plate and the light-diffusing film. Additionally, the integrated design... The light guide plate and the light-diffusing film of the original components require different materials, making their molding processes relatively complex. However, this application separates the light guide plate 30 and the light-diffusing film 35, requiring only that they be light-dense media relative to air. This reduces the material limitations on the light guide plate 30 and the light-diffusing film 35. At the same time, the molding process of the light guide plate 30 and the light-diffusing film 35 is simpler, which facilitates the improvement of the manufacturing efficiency of the light guide plate 30 and the light-diffusing film 35. Moreover, when the light guide plate 30 and the light-diffusing film 35 need maintenance or replacement, they only need to be maintained or replaced individually, reducing the maintenance cost of the vehicle lamp 100.
[0040] It is understood that the specific shape of the light guide plate 30 in this application is not limited, as long as the light-incoming surface 34 connecting the reflective surface 31 and the light-emitting surface 33 can be arranged opposite to the light source assembly 2. For example, some components in the mounting cavity 12 may affect the light emission of the light guide plate 30. In this case, the light guide plate 30 can be designed to avoid the aforementioned components so that the vehicle lamp 100 can still maintain its lighting effect. Thus, the light guide plate 30 configured as described above can adapt to different installation environments, so that even with certain structural or styling features of the vehicle lamp 100, a uniform lighting effect can still be achieved, which helps to improve the reliability of the vehicle lamp 100.
[0041] When the vehicle light 100 is a car logo light, compared to some technologies where car logo lights often use a lampshade with a light-diffusing material and a direct projection of the light source component, i.e., the light source component is located directly behind the lampshade, the light source component also needs to change its shape to adapt to the shape of the car logo when the shape of the car logo is special. For example, the light source component includes a flexible circuit board and LED beads. The flexible circuit board is used to adapt to the shape of the car logo to achieve a uniform lighting effect for the car logo light. However, this application uses a light guide plate 30 and a light-diffusing film 35 to change their shapes according to the shape of the car logo to achieve uniform lighting of the car logo light. At this time, the light-incoming surface 34 connected to the reflective surface 31 and the light-emitting surface 33 can be set opposite to the light source component 2, without the need to use a flexible circuit board to adapt to the shape of the car logo, thereby reducing the manufacturing cost of the car logo light.
[0042] It is understood that the structure of the vehicle light 100 of this application is suitable for larger decorative lamps, such as luminous grilles. The structure of this vehicle light 100 can also be used to save space, overall lamp volume, overall lamp weight, number of light sources, etc. At the same time, the vehicle light 100 of this application is also suitable for vehicle logo lights, position lights, etc.
[0043] like Figures 2-8 As shown, in some embodiments, the light guide plate 30 is formed as a plate structure, and the structure of the light guide plate 30 is relatively simple, so that the manufacturing of the light guide plate 30 is simpler and easier to adapt to the large-scale production of the vehicle lamp 100. The reflective surface 31 and the light emitting surface 33 are arranged opposite to each other along the thickness direction of the light guide plate 30, the lamp housing 10 and the lamp cover 11 are matched along the thickness direction of the light guide plate 30, and the light-diffusing film 35 is disposed between the lamp cover 11 and the light guide plate 30. Then the light emitting surface 33, the light-diffusing film 35 and the lamp cover 11 are arranged sequentially along the thickness direction of the light guide plate 30, so that the light path through the light emitting surface 33, the light-diffusing film 35 and the lamp cover 11 is clearer, so that the light is less likely to be interfered with by other components in the mounting cavity 12, which helps to improve the display effect of the vehicle lamp 100.
[0044] For example, when the headlight 100 is a car logo light applied to the vehicle 200, the thickness direction of the light guide plate 30 is the driving direction of the vehicle 200. At this time, the light-incoming surface 34 can be located on the length side or the width side of the light guide plate 30. That is, the light source component 2 can also be located on the length side or the width side of the light guide plate 30. Compared with the solution of the car logo light having a lamp cover with a light diffusion material for direct projection of the light source component, that is, the light source component is located inside the thickness of the lamp cover, the light source component will occupy a large space in the thickness direction of the car logo light, which is not conducive to realizing the thinning design of the car logo light. However, in this application, the light source component 2 can be located on the length side or the width side of the light guide plate 30, so that the light source component 2 will not occupy a large space in the thickness direction of the car logo light, which is conducive to saving the space of the car logo light in the driving direction, making it easier to realize the thinning design of the car logo light, and being able to adapt to more different car models.
[0045] like Figures 2-4 As shown, in some embodiments, the light guide plate 30 is formed as a plate-like structure, the reflective surface 31 and the light emitting surface 33 are arranged opposite each other along the thickness direction of the light guide plate 30, the lamp housing 10 and the lamp shade 11 are fitted together along the thickness direction of the light guide plate 30, the thickness of the light guide plate 30 is t1, the thickness of the light uniform film 35 is t2, 2mm≤t1≤4mm, t2≤1mm, for example, t1 is 2mm, 2.4mm, 2.6mm, 2.9mm, 3.1mm, 3.5mm, 3.8mm, 4mm, etc., and t2 is 0.1mm, 0.2mm, 0.4mm, 0.5mm, 0.8mm, 0.9mm, 1mm, etc.; and / or, the light guide plate 30 is formed as a strip, and the light-incoming surface 34 is located at the end of the light guide plate 30 in its length direction.
[0046] It is evident that by setting the thickness of the light guide plate 30 within the range of 2mm to 4mm, and simultaneously ensuring that the thickness of the light-diffusing film 35 is less than or equal to 1mm, the light guide plate 30 and the light-diffusing film 35 do not occupy a large space in the thickness direction of the headlight 100. Furthermore, the light source assembly 2 is positioned on either the length or width side of the light guide plate 30, so that the light source assembly 2 also does not occupy a large space in the thickness direction of the headlight 100. For example, the overall thickness of the headlight 100 can be easily reduced to 10mm. When the headlight 100 is used as a logo light on a vehicle 200, in related technologies, the logo light uses a lampshade with a light-diffusing material and a direct-projection light source assembly. The overall thickness of the headlight is typically over 20mm. When the space at the logo area of some vehicle models is small, it is difficult to achieve uniform illumination of the logo light, and it may also affect the arrangement of other components inside the vehicle. By adopting the headlight 100 of this application, the thickness of the headlight 100 can be effectively reduced, for example, to 10mm. Even if the space at the logo area of some vehicle models is small, the headlight 100 of this application can still be installed. To achieve uniform illumination of the vehicle logo light without easily affecting the arrangement of other components; and / or, if the light guide plate 30 is elongated and the light-inlet surface 34 is located at the end of the light guide plate 30 along its length, then the light source assembly 2 is also located on one side of the light guide plate 30 along its length, so that the light source assembly 2 can make fuller use of the space of the mounting cavity 12 in the length direction of the light guide plate 30, so that the vehicle lamp 100 does not occupy a large space in the thickness direction of the light guide plate 30, and the layout of the components inside the vehicle lamp 100 is more compact, which facilitates the miniaturization design of the vehicle lamp 100.
[0047] like Figure 3 , Figure 4 and Figure 6As shown, in some embodiments, the projected area of the reflective structure 32 on the reflective surface 31 is larger than the area of the light-inlet surface 34, so that the reflective structure 32 can have sufficient coverage on the reflective surface 31, so that the reflective structure 32 can effectively direct the light passing through the light-inlet surface 34 into the light-diffusing film 35 through the light-outlet surface 33, which is conducive to improving the display effect of the vehicle lamp 100.
[0048] Moreover, on the reflective surface 31, the orthographic projection of the reflective structure 32 is located within the outer contour of the orthographic projection of the uniform light film 35. That is, the coverage area of the uniform light film 35 is greater than the coverage area of the reflective structure 32, so that the light passing through the reflective structure 32 can pass through the uniform light film 35. The uniform light film 35 then changes the direction of the light, and after sufficient light mixing, it passes through the lamp cover 11 and is emitted, reducing the possibility of local overbrightness of the light passing through the lamp cover 11, so that the vehicle lamp 100 can have a more uniform light output effect.
[0049] like Figure 6 and Figure 7 As shown, in some embodiments, the light guide plate 30 is formed into an elongated shape, and the reflective structure 32 and the light-incoming surface 34 are spaced apart along the length direction of the light guide plate 30. The area of the light-incoming surface 34 is smaller than the projected area of the reflective structure 32 on the reflective surface 31. The reflective structure 32 includes a plurality of reflective units 32a, which are spaced apart along the length direction of the light guide plate 30. Each reflective unit 32a includes a plurality of reflective portions 32b spaced apart along the width direction of the light guide plate 30. The reflective portions 32b are formed as protrusions or concave points, and the cross-section of the reflective portions 32b is arc-shaped or prismatic, with the cross-section perpendicular to the width direction of the light guide plate 30.
[0050] As can be seen, the reflective structure 32 and the light-incoming surface 34 are spaced apart along the length of the light guide plate 30. That is, a portion of the upper area of the reflective surface 31 does not have the reflective structure 32, and this portion of the reflective surface 31 is adjacent to the light-incoming surface 34 along the length of the light guide plate 30. This allows total internal reflection to occur when light passes through this portion of the reflective surface 31, ensuring that the light intensity is not weakened and improving the light output effect of the vehicle lamp 100. For example, when the vehicle lamp 100 is used as a vehicle logo light in a vehicle 200, the logo light can be partially located inside the vehicle body, meaning the light guide plate 30 can also be partially located inside the vehicle body. By omitting the reflective structure 32 from the portion of the light guide plate 30 located inside the vehicle body, the light intensity is not weakened, further improving the display effect of the logo light.
[0051] Furthermore, multiple reflective units 32a are spaced apart along the length of the light guide plate 30, and each reflective unit 32a includes multiple reflective portions 32b spaced apart along the width of the light guide plate 30. That is, the light guide plate 30 includes multiple reflective portions 32b spaced apart along its length and width. For example, the multiple reflective portions 32b are arranged in multiple rows and columns on the reflective surface 31. When the light from the light source assembly 2 diverges according to the Lambertian curve, the relatively concentrated light enters the interior of the light guide plate 30 through the light-inlet surface 34. The light can undergo total internal reflection between the intervals of adjacent reflective portions 32b, so that the light will not be concentrated and emitted to certain areas of the light-outlet surface 33. The light can be evenly distributed in the area where the light-outlet surface 33 is opposite to the reflective structure 32, which facilitates the uniform illumination of the vehicle lamp 100 and improves the display effect of the vehicle lamp 100.
[0052] The reflective portion 32b is formed as a convex point or a concave point, and its cross-section is arc-shaped. For example, the reflective portion 32b is configured as a hemispherical convex point or a hemispherical concave point, so that the light distribution through the reflective portion 32b can be more uniform, allowing the side of the headlight 100 to still have a relatively uniform light emission effect, thus improving the display effect of the headlight 100. It can be understood that the convex point can be formed by a part of the reflective surface 31 protruding, and the concave point can be formed by a part of the reflective surface 31 being recessed.
[0053] In other embodiments of this application, the cross-section of the reflective portion 32b may also be prismatic, so that the arrangement of the reflective portion 32b is more flexible.
[0054] like Figure 6 and Figure 7 As shown, in some embodiments, the reflective structure 32 is configured to satisfy at least one of the following conditions A1 to A4:
[0055] In condition A1, multiple reflective units 32a are arranged at equal intervals to make the distribution of reflective units 32a on reflective surface 31 more regular, so as to make the processing of multiple reflective units 32a more convenient and to improve the processing efficiency of light guide plate 30.
[0056] In condition A2, the multiple reflective parts 32b of two adjacent reflective units 32a are staggered in the width direction of the light guide plate 30 so that the light that undergoes total internal reflection through the previous reflective unit 32a can contact the reflective part 32b in the next reflective unit 32a when it passes through the next reflective unit 32a, thereby directing the light through the light-emitting surface 33 into the uniform light film 35. The multiple reflective structures 32 can more fully guide the light emitted by the light source assembly 2, which helps to improve the display effect of the vehicle lamp 100.
[0057] In condition A3, there is one light-inlet surface 34, for example, the light source component 2 inside the headlight 100 is also one. The interval between two adjacent reflective units 32a decreases in the direction away from the light-inlet surface 34. That is, the larger the distance from the light-inlet surface 34, the denser the arrangement of the two adjacent reflective units 32a on the reflective surface 31. This allows light that undergoes total internal reflection through the interval between the two reflective units 32a to be ultimately led out by the reflective units 32a away from the light-inlet surface 34. This makes the light more evenly distributed on the light-outlet surface 33, and it is less likely that the brightness of some areas of the light-outlet surface 33 away from the light-inlet surface 34 will be weak. This makes it easier to achieve a uniform lighting effect for the headlight 100.
[0058] In condition A4, there is one light-inlet surface 34, and the dimensions of multiple reflective parts 32b along the length of the light guide plate 30 decrease in the direction away from the light-inlet surface 34. That is, the greater the distance from the light-inlet surface 34, the more reflective parts 32b per unit area on the reflective surface 31. This allows light that undergoes total internal reflection between the interval between two reflective parts 32b of the same reflective unit 32a to be ultimately guided out by the reflective parts 32b of the reflective unit 32a away from the light-inlet surface 34. This makes the light more evenly distributed on the light-outlet surface 33, and it is less likely that the brightness of some areas of the light-outlet surface 33 away from the light-inlet surface 34 will be weak. This facilitates the uniform lighting effect of the vehicle headlight 100.
[0059] like Figures 6-8 As shown, in some embodiments, the lamp housing 10 forms a limiting groove 10a, the opening of the limiting groove 10a is disposed facing the light guide plate 30, the light guide plate 30 includes a main body 36 and at least one positioning part 37, the light-entering surface 34, the light-exiting surface 33 and the reflective surface 31 are all formed on the main body 36, the positioning part 37 is connected to the outer edge of the main body 36, and the positioning part 37 is adapted to be inserted into and positioned in the limiting groove 10a through the opening of the limiting groove 10a.
[0060] As can be seen, the positioning part 37 is suitable for positioning and fitting with the limiting groove 10a through the groove opening of the limiting groove 10a. When the light guide plate 30 and the lamp housing 10 are assembled, it is only necessary to align the positioning part 37 with the groove opening and insert it. There is no need for a complicated positioning process, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100.
[0061] For example, the light guide plate 30 has a plate-like structure. The light guide plate 30 includes a main body 36 and two positioning parts 37. The two positioning parts 37 are located at one end of the length of the main body 36 and are connected to the outer edge of the aforementioned end of the length of the main body 36. The two positioning parts 37 are spaced apart along the width direction of the main body 36. The light guide plate 30 is assembled to the lamp housing 10 along its thickness direction. In the thickness direction of the main body 36, the opening of the limiting groove 10a faces the light guide plate 30. When the light guide plate 30 and the lamp housing 10 are assembled, it is only necessary to align the two positioning parts 37 with the opening of the limiting groove 10a and insert them, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100.
[0062] like Figures 6-8 As shown, in some embodiments, the main body 36 is formed in an elongated shape, and there are multiple positioning portions 37, which are spaced apart along a direction perpendicular to the length of the main body 36. Each positioning portion 37 is connected to the main body 36. For example, the multiple positioning portions 37 are spaced apart along the width direction of the main body 36 or along the thickness direction of the main body 36, which facilitates improving the positioning accuracy of the light guide plate 30 and the lamp housing 10, and is beneficial to improving the assembly efficiency of the vehicle lamp 100; and / or, the vehicle lamp 100 also includes at least one first fastener, which passes through the positioning portion 37 and is detachably connected to the light guide plate. The light guide plate 30 is fixed to the lamp housing 10 by the first fastener, so that the setting position of the light guide plate 30 is more stable, which facilitates the improvement of the stability of the vehicle lamp 100 operation. Moreover, the first fastener passes through the positioning part 37, which is connected to the outer edge of the main body part 36. This provides more installation space for the assembly of the first fastener, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100. At the same time, the positioning part 37 can avoid the light source assembly 2, so that the light emitted by the light source assembly 2 can effectively enter the main body part 36. The first fastener is less likely to affect the light propagation in the main body part 36, which facilitates the improvement of the stability of the vehicle lamp 100.
[0063] For example, the first fastener is a threaded fastener (such as a screw) to make the installation and disassembly of the light guide plate 30 and the lamp housing 10 more convenient, facilitate subsequent maintenance and repair, and make the overall structure more compact and save space.
[0064] Furthermore, the vehicle light 100 may include a plurality of first fasteners, which are detachably connected to the light guide plate 30 and the lamp housing 10 via corresponding positioning parts 37, so as to make the fit between the light guide plate 30 and the lamp housing 10 more stable.
[0065] like Figures 6-8As shown, in some embodiments, the light guide plate 30 is formed into an elongated shape, and the mounting cavity 12 includes a first cavity 12a and a second cavity 12b. The dimensions of the second cavity 12b in the first direction and the second direction are respectively larger than those of the first cavity 12a. The dimension of the second cavity 12b in the second direction is larger than that of the second cavity 12b in the first direction. At least a portion of the light guide plate 30 is disposed in the first cavity 12a. The first direction and the second direction are perpendicular to each other, and both are perpendicular to the length direction of the light guide plate 30.
[0066] As can be seen, the mounting cavity 12 includes a first cavity 12a and a second cavity 12b. The second cavity 12b is larger in the first direction than the first cavity 12a in the first direction, and the second cavity 12b is larger in the second direction than the first cavity 12a in the second direction. At least a portion of the light guide plate 30 is disposed in the first cavity 12a. For example, the light guide plate 30 includes a main body 36 and two positioning parts 37. The main body 36 is disposed in the first cavity 12a, and the two positioning parts 37 are disposed in the second cavity 12b. The larger area of the second cavity 12b provides more operating space for the assembly of the positioning parts 37, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100. At the same time, the larger area of the second cavity 12b can also be used to place other components of the vehicle lamp 100. By disposing of the main body 36 in the first cavity 12a, other components of the vehicle lamp 100 are less likely to affect the light emission of the vehicle lamp 100, which facilitates the improvement of the display effect of the vehicle lamp 100.
[0067] For example, the first direction is the thickness direction of the light guide plate 30, and the second direction is the width direction of the light guide plate 30. The dimensions of the second chamber 12b in the thickness direction and the width direction of the light guide plate 30 are larger than those of the first chamber 12a, so that the area of the second chamber 12b is larger, providing more operating space for the installation of other components of the vehicle lamp 100 and facilitating the improvement of the assembly efficiency of the vehicle lamp 100.
[0068] The light source assembly 2 is disposed in the second chamber 12b and includes a light source carrier plate 20 and a light source component. The light source carrier plate 20 includes a first mounting portion 20a, a second mounting portion 20b and a third mounting portion 20c arranged sequentially along the second direction. The light source component is disposed in the second mounting portion 20b. At least one of the first mounting portion 20a and the third mounting portion 20c is detachably connected to the housing 1 by a second fastener.
[0069] As can be seen, at least one of the first mounting part 20a and the third mounting part 20c is detachably connected to the housing 1 by a second fastener. For example, the first mounting part 20a is detachably connected to the housing 1 by a second fastener, or the third mounting part 20c is detachably connected to the housing 1 by a second fastener, or both the first mounting part 20a and the third mounting part 20c are detachably connected to the housing 1 by a second fastener. This makes the setting position of the light source assembly 2 in the mounting cavity 12 more stable, which helps to improve the stability of the vehicle lamp 100 operation. In the second direction, the second mounting part 20b is located between the first mounting part 20a and the third mounting part 20c. By setting the light source component in the second mounting part 20b, the first mounting part 20a and / or the third mounting part 20c are less likely to affect the light emission of the light source component after being assembled with the housing 1, which helps to improve the stability of the vehicle lamp 100.
[0070] Alternatively, the second fastener is a threaded fastener (such as a screw).
[0071] In some embodiments, the lampshade 11 is a transparent or translucent plastic part, and the inner surface of the lampshade 11 is provided with a metal coating, a portion of which is a semi-transparent coating. For example, another portion of the metal coating is a masking coating.
[0072] As can be seen, by providing a semi-transparent metal coating on the inner surface of the lampshade 11, such as providing a semi-transparent aluminum coating on the inner surface of the lampshade 11, light can be emitted through the semi-transparent coating. By adjusting the coverage area of the semi-transparent coating, for example, by making the lampshade 11 a transparent plastic part, the coverage area of the semi-transparent coating can be adjusted so that light can present different patterns on the lampshade 11. When the light source assembly 2 is not working, the user can only see the semi-transparent coating and will not see the internal structure of the headlight 100, so that the headlight 100 can present a metallic texture when it is not lit, which can improve the aesthetics of the headlight 100.
[0073] Furthermore, when the vehicle headlight 100 is used as a logo light on a vehicle 200, since the logo has many different shapes, this application can adjust the coverage of the semi-transparent coating to display different logo shapes on the headlight 100, thereby improving the adaptability of the headlight 100.
[0074] In other embodiments of this application, a micro-carved light-transmitting structure is formed on the metal coating, so that the metal coating includes a light-transmitting area and a non-light-transmitting area. It is understood that the micro-carved light-transmitting structure corresponds to the light-transmitting area; in this case, the metal coating may be selected as a masking coating.
[0075] As can be seen, by providing a metal coating on the inner surface of the lamp cover 11, such as providing a shielding aluminum coating on the inner surface of the lamp cover 11, and forming a micro-carved light-transmitting structure on the metal coating, light can be emitted through the light-transmitting area. By adjusting the coverage of the light-transmitting area and the non-light-transmitting area, different patterns can be presented on the lamp cover 11. When the light source assembly 2 is not working, the user can only see the metal coating and will not see the internal structure of the headlight 100, so that the headlight 100 can present a metallic texture when it is not lit, which can improve the aesthetics of the headlight 100.
[0076] In related technologies, vehicle lights typically employ a scheme where the light source is directly projected onto the lampshade, which is then combined with a light-diffusing material. This light-diffusing material is usually milky white, causing a hazy effect when light passes through the lampshade, negatively impacting the user experience and leading to aesthetic fatigue. This application, however, addresses this by incorporating a light guide plate 30 and a light-diffusing film 35. This allows the light passing through these components to achieve uniform illumination of the vehicle light 100, eliminating the hazy visual effect. Furthermore, the inner surface of the lampshade 11 is coated with a metallic film, giving the vehicle light 100 a metallic texture even when not illuminated, thus enhancing its overall quality and product appeal. It is understood that the light transmittance of the metallic coating on the inner surface of the lampshade 11 can be freely selected based on brightness requirements, pattern requirements, and the desired metallic visual effect.
[0077] Optionally, the lampshade 11 is made of polymethyl methacrylate (PMMA) or polycarbonate (PC). The above materials have good light transmittance, can efficiently transmit light, and have good optical uniformity, which can ensure clear, accurate, uniform and stable lighting. At the same time, the density of the above materials is low, so that the lampshade 11 made of the above materials is lightweight, which is convenient for installation and transportation. Moreover, the above materials are easy to mold, can be made into various shapes and sizes, and the surface treatment is also convenient to meet different appearance requirements.
[0078] In some embodiments, at least one of the light guide plate 30 and the light uniform film 35 is a plastic component.
[0079] For example, the light guide plate 30 is made of polymethyl methacrylate (PMMA) or polycarbonate (PC). These materials have good light transmittance, can efficiently transmit light, and have good optical uniformity, which can ensure clear, accurate, uniform and stable illumination. At the same time, these materials have low density, so the light guide plate 30 made of these materials is lightweight, which is convenient for installation and transportation. Moreover, these materials are relatively easy to mold, can be made into various shapes and sizes, and are easy to surface treat, so they can be adapted to different installation environments.
[0080] For example, the light-diffusing film 35 is made of polycarbonate (PC) or polyethylene (PE). PC material has high strength, good toughness, and strong impact resistance, which can protect the internal structure from external damage. It also has excellent heat resistance and weather resistance, and can maintain stable performance in high temperature or complex environments, ensuring long-lasting light-diffusing effect. PE material has good flexibility, is easy to process into various shapes, adapts to different lighting equipment, has lower cost, can effectively control production costs, and has good chemical stability, resists corrosion from a variety of chemical substances, which can extend the service life of the light-diffusing film 35.
[0081] The vehicle 200 according to the second aspect of the present invention includes the headlights 100 according to the first aspect of the present invention.
[0082] According to the embodiment of the present utility model, the vehicle 200 adopts the above-mentioned headlight 100, which has a smaller overall size and is less likely to affect the layout of various components inside the vehicle 200, so that the design of the vehicle 200 can be more flexible.
[0083] It is understood that the specific type of vehicle 200 referred to in this application embodiment is not limited. For example, vehicle 200 can be a gasoline vehicle, a natural gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, range-extended electric vehicles, solar electric vehicles, gas fuel vehicles (e.g., hydrogen engine vehicles), or biofuel vehicles (e.g., vehicles powered by ethanol, biodiesel, etc.). Furthermore, when the vehicle light 100 is applied to vehicle 200, the vehicle light 100 can be a vehicle logo light, etc., but is not limited to these.
[0084] Other configurations and operations of the vehicle 200 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.
[0085] Furthermore, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately. In addition, various different embodiments of this application can also be arbitrarily combined, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.
[0086] In the description of this utility model, it should be understood that the terms "center", "lateral", "length", "thickness", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this 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 this utility model.
[0087] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. It should be noted in the description of this utility model that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.
[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0089] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A vehicle lamp characterized by comprising: include: A housing, the housing including a lamp housing and a lamp shade, the lamp housing and the lamp shade cooperating to jointly define a mounting cavity; A light source assembly, wherein the light source assembly is disposed in the mounting cavity; An optical element includes a light guide plate and a light-diffusing film, which are separately disposed. The light guide plate includes a reflective surface and a light-emitting surface, as well as a light-incoming surface connecting the reflective surface and the light-emitting surface. A reflective structure is provided on the reflective surface. The light-emitting surface is disposed opposite to the light-diffusing film, and the light-incoming surface is disposed opposite to the light source assembly. The area of the light-incoming surface is smaller than the area of the light-emitting surface. The reflective structure is configured such that light reflected by the reflective structure enters the light-diffusing film through the light-emitting surface. The light-diffusing film is disposed between the lampshade and the light guide plate.
2. The vehicle light according to claim 1, characterized in that, The light guide plate is formed into a plate-like structure. The reflective surface and the light-emitting surface are arranged opposite each other along the thickness direction of the light guide plate. The lamp housing and the lamp shade are fitted together along the thickness direction of the light guide plate. The thickness of the light guide plate is t1, and the thickness of the light-diffusing film is t2, where 2mm ≤ t1 ≤ 4mm, and t2 ≤ 1mm; and / or, The light guide plate is formed in the shape of an elongated strip, and the light-incoming surface is located at the end of the light guide plate in its length direction.
3. The vehicle light of claim 2, wherein The projected area of the reflective structure on the reflective surface is larger than the area of the light-incoming surface, and the orthographic projection of the reflective structure on the reflective surface is located within the outer contour of the orthographic projection of the uniform light film.
4. The vehicle lamp of claim 1, wherein The light guide plate is formed into an elongated strip shape. The reflective structure and the light-incoming surface are spaced apart along the length of the light guide plate. The area of the light-incoming surface is smaller than the projected area of the reflective structure on the reflective surface. The reflective structure includes multiple reflective units, which are spaced apart along the length of the light guide plate. Each reflective unit includes multiple reflective portions spaced apart along the width of the light guide plate. The reflective portions are formed as convex or concave points, and the cross-section of the reflective portions is arc-shaped or prismatic, with the cross-section perpendicular to the width of the light guide plate.
5. The vehicle light of claim 4, wherein The reflective structure is configured to satisfy at least one of the following conditions: Multiple reflective units are arranged at equal intervals; The multiple reflective portions of two adjacent reflective units are staggered in the width direction of the light guide plate; There is one light-inlet surface, and the spacing between two adjacent reflective units decreases in the direction away from the light-inlet surface. There is one light-incoming surface, and the dimensions of the plurality of reflective parts in the length direction of the light guide plate decrease in the direction away from the light-incoming surface.
6. The vehicle lamp of claim 1, wherein The lamp housing forms a limiting groove, the opening of the limiting groove is disposed facing the light guide plate, the light guide plate includes a main body and at least one positioning part, the light-inlet surface, the light-outlet surface and the reflective surface are all formed on the main body, the positioning part is connected to the outer edge of the main body, and the positioning part is adapted to be inserted into and positioned in the limiting groove through the opening of the limiting groove.
7. The vehicle light according to claim 6, characterized in that, The main body is elongated, and the positioning parts are multiple and spaced apart along a direction perpendicular to the length of the main body, each positioning part being connected to the main body; and / or The vehicle headlight also includes at least one first fastener, which passes through the positioning portion and detachably connects the light guide plate and the lamp housing.
8. The vehicle lamp of claim 1, wherein The light guide plate is formed in an elongated shape. The mounting cavity includes a first chamber and a second chamber. The dimensions of the second chamber in a first direction and a second direction are respectively larger than those of the first chamber. The dimension of the second chamber in the second direction is larger than its dimension in the first direction. At least a portion of the light guide plate is disposed in the first chamber. The first direction and the second direction are perpendicular to each other, and both are perpendicular to the length direction of the light guide plate. The light source assembly is disposed in the second chamber and includes a light source carrier plate and a light source component. The light source carrier plate includes a first mounting portion, a second mounting portion and a third mounting portion arranged sequentially along a second direction. The light source component is disposed in the second mounting portion. At least one of the first mounting portion and the third mounting portion is detachably connected to the housing by a second fastener.
9. The vehicle light of any one of claims 1-8, wherein, The lampshade is made of transparent or semi-transparent plastic, and the inner surface of the lampshade is coated with a metal film. A portion of the metal coating is a semi-transparent coating; or... The metal coating has a micro-carved light-transmitting structure, so that the metal coating includes a light-transmitting area and a non-light-transmitting area.
10. A vehicle characterized by comprising: Includes the vehicle lights according to any one of claims 1-9.