Integrated light guide type car lamp lightening optical system

Abstract

The invention discloses an integrated light guide type car lamp lightening optical system which comprises a light source module, a fixing support, a light guide module and a decoration frame, the decoration frame is arranged on the fixing support, the light guide module is located between the fixing support and the decoration frame, and the light guide module comprises a set of light guide plates arranged side by side; the adjacent light guide plates are matched and connected through the light guide plate flanges to form an integral light guide module structure; the light source module corresponds to one end of the light guide plate, and the transparent light-emitting area on the decorative frame corresponds to the light guide plate. The number of LED lamp beads is greatly reduced, and the light source cost is reduced; the light emitting end of the light guide plate is sprayed with black paint to shield stray light, the fixing support reflects light to assist light supplement, the brightness uniformity of a light emitting area is effectively improved, and the problems of uneven brightness, stray light interference and the like are solved. And a plurality of light guides are integrally formed through the middle flanging connecting parts and are mounted as a single part, so that the mold cost is reduced, and the assembly efficiency and consistency are improved.

Description

Technical Field

[0001] This invention relates to the field of automotive lighting technology, and in particular to an integrated light guide type automotive lighting optical system. Background Technology

[0002] With the rapid development of the automotive industry, automotive lighting has evolved beyond basic illumination and signal indication functions, becoming a core component that showcases vehicle design language and enhances product aesthetics. The styling of automotive lighting has become increasingly diverse, and the corresponding lighting effects are developing towards multi-lighting areas and personalized patterns to meet consumers' demands for high-end and customized vehicle appearance.

[0003] In terms of technical solutions for achieving multi-light-emitting area illumination in automotive headlights, traditional technologies mainly fall into two categories: direct LED illumination with thick-walled components or LED illumination with reflectors. These two solutions typically require one LED light source to correspond to one or a few light-emitting areas. When a headlight needs to achieve multiple light-emitting areas, the number of LED chips inevitably increases significantly. This not only directly increases the cost of the light source but also brings a chain of problems such as complex circuit design and cumbersome assembly processes, ultimately resulting in a high overall cost for the entire headlight product.

[0004] Existing technologies also employ light guide strips to reduce the number of LED chips, but these light guide strips are often separately installed, making installation and positioning cumbersome and relatively expensive. For example, patent CN211032354U discloses a compact automotive taillight, which includes a headlight housing, a circuit board, an LED light source, and a light guide structure. The circuit board, LED light source, and light guide structure are all located inside the headlight housing. The light guide structure includes light guide strips and thick-walled light guide components arranged side by side. The headlight housing has positioning holes, and the thick-walled light guide component has a boss structure that passes through the positioning holes. The headlight housing has a socket for inserting the light guide strip, which is placed in the socket. The LED light source is located at the bottom of the circuit board and opposite to the top of the light guide strip. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated light-guided vehicle lamp lighting optical system, which is an integrated module structure with interconnected components, simplifying the product structure and resulting in relatively low cost.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This integrated light-guided vehicle headlight illumination optical system includes a light source module, a fixed bracket, a light guide module, and a decorative frame. The decorative frame is mounted on the fixed bracket, and the light guide module is located between the fixed bracket and the decorative frame. The light guide module includes a set of light guide plates arranged side by side, with adjacent light guide plates connected by flanges to form an overall light guide module structure. The light source module is positioned at one end of the light guide plate, and the transparent light-emitting area on the decorative frame is positioned corresponding to the light guide plate.

[0007] Further or preferred: One end of the fixed bracket is provided with a groove, and the light source module is fixed in the groove by snap-fit ​​or fastener.

[0008] The fixed bracket has a horizontally oriented groove inside, and the light guide plate is engaged with the groove.

[0009] One end of the light guide plate is the light input end, which corresponds to the lamp bead of the light source module. The other end of the light guide plate is the light output end, and the end face of the light output end is provided with a black coating layer or a light-shielding tape.

[0010] The decorative frame includes a matching black decorative frame component and a transparent light-emitting component. The transparent light-emitting component has a protrusion on the light guide plate to form a thick-walled structure.

[0011] The decorative frame is located in front of the fixed frame, and one end of the black part of the decorative frame covers the light source module.

[0012] The fixed bracket is an integral bracket injection molded from a white material with reflective properties, or the surface of the strip groove on the fixed bracket is coated with a white coating or aluminum plating layer.

[0013] The decorative frame is a two-color molded integral structure, including a black decorative area and a transparent light-emitting area. The transparent light-emitting area is a thick-walled area. The black decorative area and the transparent light-emitting area are integrally injection molded to form the overall structure of the decorative frame.

[0014] The fixed bracket has a folded edge structure on its side, and the decorative frame is snapped together with the folded edge structure.

[0015] Compared with the prior art, the present invention has the following advantages: This integrated light guide type automotive light illumination optical system is rationally designed, adopting a "one LED per row" configuration and an integrated light guide structure, which significantly reduces the number of LED LEDs and lowers the cost of the light source. At the same time, the integrated molding components and simplified assembly process reduce the number of parts and assembly steps, further reducing the overall production cost. By using black paint spraying on the light-emitting end of the light guide plate to block stray light and using the reflective auxiliary light of the fixed bracket, the uniformity of brightness in the light-emitting area is effectively improved, avoiding problems such as uneven brightness and stray light interference. In addition, multiple light guides are integrally molded through the middle flanged connecting part, and installed as a single part, reducing the time and cost of molds and improving assembly efficiency and consistency. Attached Figure Description

[0016] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is a schematic diagram of the overall structure of the system of the present invention.

[0017] Figure 2 This is an exploded view of the present invention.

[0018] Figure 3 This is a longitudinal sectional view of the system of the present invention.

[0019] Figure 4 This is a schematic diagram of the decorative frame structure of the present invention.

[0020] Figure 5 This is a cross-sectional view of the decorative frame of the present invention.

[0021] Figure 6 This is a schematic diagram of the optical guide plate structure of the present invention.

[0022] Figure 7 This is a schematic diagram of the light source module and light guide plate structure of the present invention. Figure 8 This is a schematic diagram of the fixed support structure of the present invention.

[0023] In the picture: 1-Decorative frame light-emitting area, 2-Light source module, 3-Fixed bracket, 4-Light guide module, 5-Decorative frame, 6-Black part of decorative frame, 7-Transparent light-emitting part of decorative frame, 8-Light guide plate connecting flange, 9-Light guide groove of bracket, 10-Light input end, 11-Light output end. Detailed Implementation

[0024] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0025] Although the invention has been shown and described herein with reference to specific embodiments, it is not intended to be limited to the details shown. Rather, various modifications in detail may be made within the equivalent scope and scope of the claims without departing from the invention. In the drawings, the same item numbers refer to the same elements.

[0026] Throughout this disclosure, various terms are used to describe the physical shape or arrangement of features. Many of these terms are used to describe features conforming to a cylindrical or generally cylindrical geometry with the feature as its radius and a central axis perpendicular to that radius. Unless otherwise specified, the terms are given the following meanings: The terms “longitudinal,” “longitudinal,” “axial,” and “axial” refer to a direction, dimension, or orientation parallel to the central axis. The terms “radial” and “radially” refer to a direction, dimension, or orientation perpendicular to the central axis. The terms “inward” and “inner” refer to a direction, dimension, or orientation extending radially toward the central axis. The terms “outward” and “outer” refer to a direction, dimension, or orientation extending radially away from the central axis.

[0027] In this specification, relative terms such as “horizontal,” “vertical,” “upward,” “downward,” “top,” and “bottom,” and their derivatives (e.g., “horizontal,” “downward,” “upward,” etc.) should be interpreted as referring to the direction described or the direction shown in the accompanying drawings. These relative terms are for ease of description and are not generally intended to require a specific direction.

[0028] like Figures 1 to 8 As shown, the integrated light-guiding multi-emitting-surface low-cost vehicle lighting optical system includes a light source module 2, a fixed bracket 3, a light guide module 4, and a decorative frame 5. The decorative frame is set on the fixed bracket, and the light guide module is located between the fixed bracket and the decorative frame and positioned on the fixed bracket, forming an overall modular structure of the optical system.

[0029] The light guide module 4 includes a set of light guide plates arranged side by side. Adjacent light guide plates are connected by a connecting flange 8 to form an overall light guide module structure. The light source module is set at one end of the light guide plate, and the transparent light-emitting area on the decorative frame is set at the light guide plate.

[0030] This invention optimizes the optical structure, enabling a single light source to cover a row of light-emitting areas. For luminaires with multiple rows of light-emitting areas, multiple light guides are integrated into a single component, requiring only a few LED beads to illuminate all light-emitting areas. This solution reduces the number of light sources, simplifies the product structure, and lowers costs.

[0031] The fixed bracket 3 has a folded edge structure on its edge, and the decorative frame is snapped into the folded edge structure. Furthermore, one end of the fixed bracket has a groove, and the light source module is fixed in the groove by snapping or fasteners; the interior of the fixed bracket has a horizontal strip groove, which is the light guide groove 9 of the bracket, and the light guide plate is snapped into the strip groove; the integrated design forms an integral assembly through the mating structure, simplifying the structure.

[0032] Furthermore, the fixing bracket 3 is an integral bracket injection molded from a reflective white material, or the surface of the strip groove on the fixing bracket has a white coating or aluminum plating layer. This effectively reflects the light transmitted by the light guide plate, thereby improving the uniformity of the lighting effect in the light-emitting area.

[0033] One end of the light guide plate is the light input end 10, which corresponds to the LED bead of the light source module. The other end of the light guide plate is the light output end 11, and the end face of the light output end is provided with a black coating or a light-shielding tape to ensure accurate light transmission and block stray light.

[0034] The decorative frame includes a matching black decorative frame component 6 and a transparent light-emitting component 7. The transparent light-emitting component has protrusions on it corresponding to the light guide plate, forming a thick-walled structure. Furthermore, the decorative frame is located in front of the mounting bracket, and one end of the black decorative frame component covers the light source module.

[0035] Alternatively, the decorative frame is a two-color molded one-piece structure, which includes a black decorative area and a transparent light-emitting area. The transparent light-emitting area is a thick-walled area, that is, the thick-walled area is the light-emitting area 1 of the decorative frame. The black decorative area and the transparent light-emitting area are integrally injection molded to form the overall structure of the decorative frame.

[0036] This invention features a rationally designed integrated light guide-type vehicle light illumination optical system. It employs a "one LED per row" configuration and an integrated light guide structure, significantly reducing the number of LEDs and lowering light source costs. Simultaneously, the integrated molding components and simplified assembly process reduce the number of parts and assembly steps, further reducing overall production costs. By using black paint to shield stray light at the light-emitting end of the light guide plate and using a reflective bracket to assist in supplementary lighting, the uniformity of brightness in the emitting area is effectively improved, avoiding problems such as uneven brightness and stray light interference. Furthermore, multiple light guides are integrally molded through a central flanged connection, allowing for installation as a single part, reducing mold costs and time, and improving assembly efficiency and consistency.

[0037] A preferred embodiment of the present invention is as follows: This invention discloses a low-cost, multi-emitting-surface lighting optical system. While maintaining the advantages of fewer light sources and lower cost, this system effectively improves the brightness uniformity and lighting effect stability of the emitting area through optimized optical structure design. Simultaneously, it simplifies the assembly process, improves consistency in mass production, and meets the comprehensive requirements of automotive lighting for multiple emitting surfaces, high quality, and low cost. The specific structural scheme is as follows: This system consists of a decorative frame, a light source module, a light guide module, and a fixed bracket. The light source component is located at the light-inlet end of the light guide component, and all components are fixed on the fixed bracket to form a compact and precise assembly.

[0038] The decorative frame uses a two-color molding process to integrate the shallow and thick wall components with the black component, which has multiple light-emitting areas. The black component is made of PC+ABS material (with a textured surface), while the shallow and thick wall components are made of high-transmittance PC material (7.5mm thick). There are no seams, which ensures the aesthetic effect and simplifies the installation structure.

[0039] The light guide module is configured with light guide structures according to the number of rows of light-emitting areas (currently three rows correspond to three light guides). Multiple light guides are connected together by flanges to form a light guide plate structure, which can be installed by snap-fit ​​or integral molding, without the need for separate positioning and installation. The light-inlet end faces the light source, and the light-outlet end is sprayed with black paint to ensure accurate light transmission and block stray light.

[0040] The light guide plate adopts a single-sided light-incident design, following the configuration principle of "one LED per row of light-emitting areas." Currently, each of the three rows of light-emitting areas is equipped with three LEDs. A single LED can achieve uniform illumination of the entire corresponding row of light-emitting areas, fully meeting the lighting needs of multiple rows of light-emitting areas. Combined with the current design, the three rows of light-emitting areas each contain a different number of independent light-emitting units. All independent light-emitting units are precisely illuminated by a single LED in their corresponding row, eliminating the need for additional light sources and balancing low cost with lighting effect.

[0041] The mounting bracket is injection molded from white material. Its positioning structure allows for precise fixing and positioning of the decorative frame, light guide plate, and light source module. After assembly, the white material of the bracket also serves a reflective function, effectively reflecting the light transmitted by the light guide plate, thereby improving the uniformity of the lighting effect in the luminous area.

[0042] The present invention also has the following alternatives, as detailed below: Alternative solutions for light guide structure and materials: The light guide module is replaced with PMMA material through one-piece injection molding, replacing the original optical-grade PC material, which improves the uniformity of light diffusion; the white material design of the fixed bracket is cancelled and replaced with ordinary black PC material, with the addition of aluminum plating or white paint spraying process.

[0043] Alternative solution for decorative frame manufacturing process: Eliminate the two-color molding process, adopt a disassembly method for the decorative frame and thick-walled parts, and fix the thick-walled parts and decorative frame together with the frame using a snap-fit / screw post / riveting structure after disassembly.

[0044] Alternative solution for light source and light guide: The light guide plate adopts a double-sided light-incident design to replace the single-sided light-incident design. Each end of each row of light guides is equipped with an LED lamp bead, increasing the total number of lamp beads to 6.

[0045] Stray light control alternatives: The black paint treatment on the light-emitting end of the light guide plate is removed, and black light-shielding tape is used for bonding, aluminum plating, or optical patterns are added to block stray light from escaping.

[0046] The present invention has the following advantages: Low cost, high efficiency: One LED bead illuminates one row of light-emitting areas, ensuring high performance while significantly reducing the number of LED beads required. Integrated light guide flange design: Multiple light guides are integrally molded through a central flange connection, installed as a single part, reducing mold costs and time, and improving assembly efficiency and consistency. Strong adaptability: The number of light guides can be flexibly adjusted according to the number of rows of light-emitting areas, and the shape of the light-emitting areas can be designed as needed, adapting to various automotive lighting fixtures. Two-color integrated decorative frame: The black decorative part and the shallow-thick-walled part of the light-emitting area are injection molded as a single piece, without seams, ensuring aesthetic appeal and simplifying the installation structure.

[0047] Furthermore, the dual-color molding process has been eliminated, and the decorative frame and thick-walled parts adopt a disassembly scheme. After disassembly, the thick-walled parts are fixed to the decorative frame through a buckle / screw post / riveting structure. The light guide plate adopts a double-sided light-injection design instead of a single-sided light-injection design, which improves the overall brightness and doubles the number of LED beads. The black paint treatment on the light-emitting end of the light guide plate has been eliminated. Instead, black light-shielding tape is used for bonding, aluminum plating, or optical patterns are added to block stray light from escaping.

[0048] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0049] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. An integrated light-guided vehicle lamp lighting optical system, comprising a light source module, a fixed bracket, a light guide module, and a decorative frame, wherein the decorative frame is disposed on the fixed bracket, and the light guide module is located between the fixed bracket and the decorative frame, characterized in that: The light guide module includes a set of light guide plates arranged side by side, with adjacent light guide plates connected by a flange to form an overall light guide module structure; the light source module is set at one end of the light guide plate, and the transparent light-emitting area on the decorative frame is set at the light guide plate.

2. The integrated light-guided vehicle lamp lighting optical system as described in claim 1, characterized in that: One end of the fixed bracket is provided with a groove, and the light source module is fixed in the groove by snap-fit ​​or fastener.

3. The integrated light-guided vehicle lamp lighting optical system as described in claim 1, characterized in that: The fixed bracket has a horizontally oriented groove inside, and the light guide plate is engaged with the groove.

4. The integrated light-guided vehicle lamp lighting optical system as described in claim 1, characterized in that: One end of the light guide plate is the light input end, which corresponds to the lamp bead of the light source module. The other end of the light guide plate is the light output end, and the end face of the light output end is provided with a black coating layer or a light-shielding tape.

5. The integrated light-guided vehicle lamp lighting optical system as described in claim 2, characterized in that: The decorative frame includes a matching black decorative frame component and a transparent light-emitting component. The transparent light-emitting component has a protrusion on the light guide plate to form a thick-walled structure.

6. The integrated light-guided vehicle lamp lighting optical system as described in claim 5, characterized in that: The decorative frame is located in front of the fixed frame, and one end of the black part of the decorative frame covers the light source module.

7. The integrated light-guided vehicle lamp lighting optical system as described in claim 3, characterized in that: The fixed bracket is an integral bracket injection molded from a white material with reflective properties, or the surface of the strip groove on the fixed bracket is coated with a white coating or aluminum plating layer.

8. The integrated light-guided vehicle lamp lighting optical system as described in claim 7, characterized in that: The decorative frame is a two-color molded integral structure, including a black decorative area and a transparent light-emitting area. The transparent light-emitting area is a thick-walled area. The black decorative area and the transparent light-emitting area are integrally injection molded to form the overall structure of the decorative frame.

9. The integrated light-guided vehicle lamp lighting optical system as described in claim 8, characterized in that: The fixed bracket has a folded edge structure on its side, and the decorative frame is snapped together with the folded edge structure.

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