A light guide strip with heat-resistant function for vehicle lamp
By introducing a glass body and fixing mechanism into the headlight light guide, the transmission of high temperature is blocked, which solves the aging problem of the light guide in high temperature environment, extends its service life and ensures the normal use of the headlight.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING QINCHUAN SANLI AUTO LAMP CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-14
Smart Images

Figure CN224498267U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive light guide strip technology, and in particular to an automotive light guide strip with heat resistance. Background Technology
[0002] In automotive lighting systems, headlight light guides play a crucial role in guiding and illuminating light. Generally made of transparent plastic, headlight light guides reduce the number of bulbs needed, maximizing the use of light sources and achieving energy savings and aesthetic appeal.
[0003] However, the existing light guide strips for car lights have a relatively simple structure. During long-term use, especially when high-power LED beads generate high heat, the light guide strip and related components are easily affected by high temperatures, leading to material aging, performance degradation, and even affecting the normal use and lifespan of the car lights. Utility Model Content
[0004] The purpose of this utility model is to provide a heat-resistant light guide strip for vehicle lights, which solves the problem that the existing light guide strips have a relatively simple structure. During long-term use, especially when high-power LED beads generate high heat, the light guide strip and related components are easily affected by high temperatures, leading to material aging, performance degradation, and even affecting the normal use and lifespan of the vehicle lights.
[0005] To achieve the above objectives, this utility model provides a heat-resistant vehicle light guide strip. The heat-resistant vehicle light guide strip includes an LED mounting shell, an LED light board, a glass body, a first fixing mechanism, a light guide strip body, and a second fixing mechanism. The LED light board is installed at the bottom inner part of the LED mounting shell, and LED beads are disposed on the LED light board. The glass body is installed at the top inner part of the LED mounting shell through the first fixing mechanism. The glass body is located above the LED beads. A through hole is also provided at the top of the LED mounting shell, corresponding to the glass body. A mounting protrusion is also provided at the top of the LED mounting frame, located outside the through hole. The light guide strip body is installed at the mounting protrusion through the second fixing mechanism, and the bottom end of the light guide strip body is located above the glass body.
[0006] The first fixing mechanism consists of multiple fixing clips, and multiple fixing clips are evenly arranged around the periphery of the glass body. Each fixing clip is detachably connected to the top of the LED mounting shell.
[0007] Each of the fixing clips includes a fixing post, a fixing nut, a first locking block, a second locking block, and a limiting ring. The first locking block and the second locking block are fixedly disposed on the side of the fixing post, and the first locking block and the second locking block are respectively located on the upper and lower surfaces of the glass body. The top end of the fixing post penetrates the top end of the LED mounting shell. The end of the fixing post extending to the outside of the LED mounting shell is provided with a threaded portion. The fixing nut corresponds to the threaded portion. Each fixing post is also fixedly disposed with the limiting ring, and the limiting ring is fitted to the inner top of the LED mounting shell.
[0008] The second fixing mechanism includes a mounting ring and a plurality of fixing screws. The light guide strip body is embedded inside the mounting ring, and the mounting ring is mounted on the end face of the mounting protrusion by the plurality of fixing screws.
[0009] The light guide strip body is made of PC or PMMA material.
[0010] The structure of the glass body can be a cylinder or a regular polygon.
[0011] This utility model discloses a heat-resistant vehicle light guide strip, comprising an LED mounting housing, an LED light board, a glass body, a first fixing mechanism, a light guide strip body, and a second fixing mechanism. The LED light board is installed at the bottom inner side of the LED mounting housing, and LED beads are disposed on the LED light board. The glass body is installed at the top inner side of the LED mounting housing through the first fixing mechanism, and is located above the LED beads. The glass body can withstand the high temperature generated by the high-power LED beads, preventing heat from being directly transferred to the light guide strip body and related components, thus reducing high-temperature damage. At the same time, the top of the LED mounting housing has a through hole corresponding to the glass body. The light guide strip body is installed at the mounting protrusion through the second fixing mechanism, and the bottom end of the light guide strip body is located above the glass body. This design not only ensures light transmission, but also utilizes the heat-resistant properties of the glass body to reduce the risk of material aging and performance degradation, extend the service life of the vehicle light guide strip, and ensure the normal use of the vehicle light. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1This is a front view of the heat-resistant light guide strip for vehicle lights provided by this utility model.
[0014] Figure 2 This utility model provides Figure 1 A schematic diagram of the cross-sectional structure of line AA.
[0015] Figure 3 This utility model provides Figure 2 Enlarged view of the local structure at point B
[0016] 101-LED mounting shell, 102-LED light board, 103-glass body, 104-light guide strip body, 105-LED lamp bead, 106-through hole, 107-mounting protrusion, 108-fixing post, 109-fixing nut, 110-first locking block, 111-second locking block, 112-limiting ring, 113-threaded part, 114-mounting ring, 115-fixing screw. Detailed Implementation
[0017] 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 intended to explain this utility model, and should not be construed as limiting this utility model.
[0018] Please see Figures 1 to 3 This utility model provides a heat-resistant light guide strip for automotive lights. The heat-resistant light guide strip includes an LED mounting housing 101, an LED light board 102, a glass body 103, a first fixing mechanism, a light guide strip body 104, and a second fixing mechanism. The LED light board 102 is mounted on the inner bottom of the LED mounting housing 101, and LED beads 105 are disposed on the LED light board 102. The glass body 103 is mounted on the top of the inner part of the LED mounting housing 101 through the first fixing mechanism. 3. The glass body 103 is located above the LED bead 105. The top of the LED mounting shell 101 is also provided with a through hole 106, which corresponds to the glass body 103. The top of the LED mounting frame is also provided with a mounting protrusion 107, which is located outside the through hole 106. The light guide strip body 104 is mounted on the mounting protrusion 107 by the second fixing mechanism. The bottom end of the light guide strip body 104 is located above the glass body 103.
[0019] In this embodiment, the glass body 103 is installed inside the top of the LED mounting housing 101 via the first fixing mechanism, and is located above the LED bead 105. The glass body 103 can withstand the high temperature generated by the high-power LED bead 105, blocking the heat from being directly transferred to the light guide strip body 104 and related components, reducing high-temperature damage. At the same time, the top of the LED mounting housing 101 is provided with the through hole 106 corresponding to the glass body 103. The light guide strip body 104 is installed at the mounting protrusion 107 via the second fixing mechanism. The bottom end of the light guide strip body 104 is located above the glass body 103. This design not only ensures light transmission, but also utilizes the heat resistance of the glass body 103 to reduce the risk of material aging and performance degradation, extend the service life of the vehicle light guide strip, and ensure the normal use of the vehicle light.
[0020] Furthermore, the first fixing mechanism is composed of multiple fixing clips. Multiple fixing clips are evenly arranged on the periphery of the glass body 103, and each fixing clip is detachably connected to the top of the LED mounting shell 101.
[0021] In this embodiment, the glass body 103 is mounted above the LED bead 105 by means of multiple fixing clips.
[0022] Furthermore, each of the fixing clips includes a fixing post 108, a fixing nut 109, a first locking block 110, a second locking block 111, and a limiting ring 112. The first locking block 110 and the second locking block 111 are fixedly disposed on the side of the fixing post 108. The first locking block 110 and the second locking block 111 are respectively located on the upper and lower surfaces of the glass body 103. The top end of the fixing post 108 penetrates the top end of the LED mounting shell 101. A threaded portion 113 is provided at one end of the fixing post 108 extending to the outside of the LED mounting shell 101. The fixing nut 109 corresponds to the threaded portion 113. The limiting ring 112 is also fixedly disposed on each fixing post 108. The limiting ring 112 fits against the inner top of the LED mounting shell 101.
[0023] In this embodiment, the fixing post 108 is placed on the side of the glass body 103, so that the first locking block 110 and the second locking block 111 are respectively located on the upper and lower sides of the glass body 103. The end of the fixing post 108 passes through the top of the LED mounting shell 101, so that the limiting ring 112 is in contact with the inner top of the LED mounting shell 101. Then, the fixing nut 109 is tightened at the threaded part 113, thereby completing the installation of the glass body 103 by multiple fixing clips.
[0024] Furthermore, the second fixing mechanism includes a mounting ring 114 and a plurality of fixing screws 115. The light guide strip body 104 is embedded inside the mounting ring 114, and the mounting ring 114 is mounted on the end face of the mounting protrusion 107 by the plurality of fixing screws 115.
[0025] In this embodiment, the mounting ring 114 is fixed to the end face of the mounting protrusion 107 using a plurality of fixing screws 115, thereby completing the installation of the light guide strip body 104.
[0026] Furthermore, the light guide strip body 104 is made of PC or PMMA material.
[0027] In this embodiment, the light guide strip body 104 is made of PC material, which can maintain good performance in an environment of -40℃ to 120℃. The partially modified PC material can maintain a long-term operating temperature of 120℃ to 140℃. At the same time, PC material has strong resistance to environmental factors such as ultraviolet rays and oxidants. It can maintain its heat resistance and physical properties for a long time under direct sunlight and complex climatic conditions. The light guide strip body 104 is made of PMMA material, which has excellent weather resistance, excellent UV resistance and aging resistance. It can maintain good transparency and performance when used outdoors for a long time.
[0028] Furthermore, the structure of the glass body 103 can be a cylinder or a regular polygon.
[0029] In this embodiment, since the structure of the glass body 103 can be a cylinder or a regular polygon, the glass body 103 can be selected according to actual design and space requirements.
[0030] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.
Claims
1. A heat-resistant light guide strip for automotive lamps, characterized in that, The device includes an LED mounting housing, an LED light board, a glass body, a first fixing mechanism, a light guide strip body, and a second fixing mechanism. The LED light board is installed at the bottom inner part of the LED mounting housing, and LED beads are disposed on the LED light board. The glass body is installed at the top inner part of the LED mounting housing through the first fixing mechanism, and the glass body is located above the LED beads. The top part of the LED mounting housing also has a through hole corresponding to the glass body. The top part of the LED mounting housing also has a mounting protrusion located outside the through hole. The light guide strip body is installed at the mounting protrusion through the second fixing mechanism, and the bottom end of the light guide strip body is located above the glass body.
2. The heat-resistant headlight guide strip as described in claim 1, characterized in that, The first fixing mechanism consists of multiple fixing clips. Multiple fixing clips are evenly arranged around the periphery of the glass body, and each fixing clip is detachably connected to the top of the LED mounting shell.
3. The heat-resistant headlight guide strip as described in claim 2, characterized in that, Each of the fixing clips includes a fixing post, a fixing nut, a first locking block, a second locking block, and a limiting ring. The first locking block and the second locking block are fixedly disposed on the side of the fixing post. The first locking block and the second locking block are respectively located on the upper and lower surfaces of the glass body. The top end of the fixing post penetrates the top end of the LED mounting shell. The end of the fixing post extending to the outside of the LED mounting shell is provided with a threaded portion. The fixing nut corresponds to the threaded portion. Each fixing post is also fixedly disposed with the limiting ring, which fits against the inner top of the LED mounting shell.
4. The heat-resistant headlight guide strip as described in claim 3, characterized in that, The second fixing mechanism includes a mounting ring and a plurality of fixing screws. The light guide strip body is embedded inside the mounting ring, and the mounting ring is mounted on the end face of the mounting protrusion by the plurality of fixing screws.
5. The heat-resistant headlight guide strip as described in claim 4, characterized in that, The light guide strip body is made of PC or PMMA material.
6. The heat-resistant headlight guide strip as described in claim 5, characterized in that, The structure of the glass body can be a cylinder or a regular polygon.