Soft light-emitting sign for vehicle

By using soft light guide strips and light guide sheets, as well as a detachable protective shell structure, the safety hazard of hard fragments flying out from the steering wheel indicator light has been solved, thus improving safety when the airbag deploys.

CN224545837UActive Publication Date: 2026-07-24HUIZHOU KEEN POINT PRECISION PLASTIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUIZHOU KEEN POINT PRECISION PLASTIC
Filing Date
2025-08-07
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The existing steering wheel airbag indicator light poses a risk of hard fragments flying out and injuring the driver. The existing light guide plate material is fragile and the PCBA is located under the light guide plate, which is prone to breakage and fragmentation during explosion.

Method used

The system uses soft light guide strips and light guide sheets made of materials such as silicone, combined with a detachable protective shell structure to prevent hard materials from flying out. The light is transmitted through the LED module light source and the light guide strips and light guide sheets, reducing the risk of injury when the airbag deploys.

Benefits of technology

This effectively avoids injury to the human body caused by flying hard materials when the airbag deploys, improving safety and reducing the risk of injury.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224545837U_ABST
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Abstract

The utility model discloses a kind of soft light-emitting marker lights for vehicle, comprising: bottom shell, face shield, light guide body and luminous body, light guide body includes the light guide strip and light guide sheet connected, bottom shell is connected with face shield, both constitute first accommodating cavity, light guide sheet is located in first accommodating cavity, the luminous end of luminous body is oriented the end of light guide strip away from light guide sheet;The light emitted by the luminous end of luminous body is transmitted to light guide sheet by light guide strip, and light-emitting effect is generated by light guide sheet.The bottom shell and face shield are located on the steering wheel of the car, the luminous body is set to the position away from bottom shell and face shield, and the luminous body conducts light by light guide strip and light guide sheet, so that the hard material on the luminous body can be avoided to fly out and cause damage to human body when airbag pops out, and the risk of injury is greatly reduced.
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Description

Technical Field

[0001] This utility model relates to the field of automotive technology, specifically to a flexible luminous marker light for vehicles. Background Technology

[0002] With the development of the automotive industry, ambient lighting is being used more and more widely, and its installation locations are constantly increasing. The steering wheel airbag logo, as an important element, can enhance the technological and luxurious feel of the interior and improve logo visibility through illumination. However, this illuminated steering wheel emblem presents safety challenges: during a vehicle collision, the airbag cover tears along the tear line, and the emblem partially shifts, allowing the airbag to deploy smoothly. In this process, any hard fragments flying out could easily injure the driver. Furthermore, existing light guide plates are made of hard, brittle materials, and the PCBA is typically located beneath the light guide plate. Upon explosion, the light guide plate and PCBA are prone to shattering, causing fragments to fly and posing a high risk of injury. Therefore, there are currently no mass-produced illuminated steering wheel emblem products on the market. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a flexible luminous marker light for vehicles.

[0004] This utility model discloses a flexible luminous marker light for vehicles, comprising: a base shell, a face shield, a light guide, and a light emitter. The light guide includes a connected light guide strip and a light guide sheet. The base shell and the face shield are connected, forming a first receiving cavity. The light guide sheet is located in the first receiving cavity. The light-emitting end of the light emitter faces the end of the light guide strip away from the light guide sheet. The light emitted from the light-emitting end of the light emitter is transmitted to the light guide sheet through the light guide strip, and the light guide sheet produces a luminous effect.

[0005] According to one embodiment of the present invention, the bottom shell has a receiving groove, and the light guide strip and the light guide sheet are both located in the receiving groove.

[0006] According to one embodiment of the present invention, the bottom shell has a slot, and the face mask has a strip, which is engaged in the slot.

[0007] According to one embodiment of the present invention, it further includes a first protective shell and a second protective shell that are detachably connected, and the first protective shell and the second protective shell together constitute a second receiving cavity, in which the light-emitting body is located.

[0008] According to one embodiment of the present invention, the side of the light guide sheet facing the bottom shell is a plane, or the side of the light guide sheet facing the bottom shell is provided with multiple recesses.

[0009] According to one embodiment of the present invention, the light guide is made of light-guide grade soft rubber material.

[0010] According to one embodiment of the present invention, the light-guiding soft adhesive material is: silicone, optical-grade TPU, acrylate elastomer, or organosilicon-acrylate composite material.

[0011] According to one embodiment of this utility model, the bottom shell is white and serves a reflective function.

[0012] According to one embodiment of the present invention, the light-emitting body is an LED module.

[0013] The beneficial effect of this utility model is that the bottom shell and the face shield are located on the steering wheel of the car, and the light-emitting body is set at a position away from the bottom shell and the face shield. The light-emitting body conducts light through light guide strips and light guide sheets. In this way, the hard material PCBA on the light-emitting body can be prevented from flying out and causing damage to the human body when the airbag is deployed, which greatly reduces the risk of injury. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A three-dimensional structural diagram of a flexible luminous marker light for vehicles; Figure 2 A breakdown diagram of a flexible luminous marker light for vehicles; Figure 3 A cross-sectional schematic diagram of a flexible luminous marker light for vehicles; Figure 4 This is a schematic diagram of the three-dimensional structure of the bottom shell; Figure 5 This is a schematic diagram of the three-dimensional structure of a light guide. Figure 6 Another three-dimensional structural diagram of a flexible luminous marker light for vehicles.

[0015] Explanation of reference numerals in the attached figures 1. Bottom shell; 11. Receiving groove; 12. Card slot; 2. Face mask; 21. Clip; 3. Light guide body; 31. Light guide strip; 32. Light guide sheet; 321. Recess; 4. Luminescent body; 5. First receiving cavity; 6. First protective shell; 7. Second protective shell; 8. Second receiving cavity; 9. Wiring harness. Detailed Implementation

[0016] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0017] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0018] Example 1 like Figures 1-3 As shown, Figure 1 A three-dimensional structural diagram of a flexible luminous marker light for vehicles; Figure 2 A breakdown diagram of a flexible luminous marker light for vehicles; Figure 3 This is a cross-sectional schematic diagram of a flexible luminous marker light for vehicles. The flexible luminous marker light includes a base shell 1, a faceplate 2, a light guide 3, and a light emitter 4. The base shell 1 and faceplate 2 are connected, forming a first receiving cavity 5. The light guide 3 is disposed within the first receiving cavity 5. The light emitter 4 has a light-emitting end that faces the end of the light guide 3 away from the faceplate 2. In use, the light-emitting end of the light emitter 4 emits light into the light guide 3. After being conducted through the light guide 3 itself, the light is transmitted to the portion of the light guide 3 located within the first receiving cavity 5, where it produces a luminous effect. In practical applications, the faceplate 2 is located on the surface of the car steering wheel; therefore, the driver or passengers can see the luminous effect through the faceplate 2. In this embodiment, the base shell 1 and faceplate 2 are detachably connected for easy assembly, replacement, and maintenance.

[0019] Please refer to the following: Figure 4 , Figure 4This is a three-dimensional structural diagram of the base shell 1. The base shell 1 has a receiving groove 11. After the face mask 2 is connected to the base shell 1, the receiving groove 11 and the inner wall surface of the face mask 2 together form the first receiving cavity 5, and the light guide 3 is disposed in the receiving groove. In specific applications, the shape of the receiving groove is adapted to the shape of the light guide 3 so that most of the light guide 3 can be placed in the receiving groove 11. Only the end of the light guide 3 opposite to the light emitter 4 needs to be placed outside the receiving groove 11 to receive light.

[0020] Please review Figures 2-4 Furthermore, the bottom shell 1 also has a slot 12, and the face mask 2 has a clip 21, which is detachably clipped into the slot 12. Specifically, the slot 12 is formed in a manner that surrounds the receiving groove 11, and correspondingly, the clip 21 is set in the same way as the slot 12.

[0021] like Figure 1 , 2 As shown in Figures 3 and 5, Figure 5 This is a three-dimensional structural diagram of the light guide 3. The light guide 3 includes a light guide strip 31 and a light guide sheet 32. One end of the light guide strip 31 is connected to the light guide sheet 32, and the other end of the light guide strip 31 is positioned opposite to the light-emitting end of the light-emitting body 4. The light guide sheet 32 ​​is located within the receiving groove and also within the first receiving cavity 5. In use, the light-emitting end of the light-emitting body 4 emits light through the light guide strip 31, and the light is transmitted to the light guide sheet 32 ​​via the light guide strip 31, where it emits light. Furthermore, the light guide sheet 32 ​​has multiple recesses 321 on the side facing the bottom groove of the receiving groove 11. The recesses 321 allow the light inside the light guide sheet 32 ​​to be reflected outwards, and also control the uniformity of light emission.

[0022] In this embodiment, both the light guide strip 31 and the light guide sheet 32 ​​are made of light-guide grade soft rubber materials, such as silicone, optical-grade TPU, acrylate elastomers, or silicone-acrylate composite materials. Silicone, optical-grade TPU, acrylate elastomers, or silicone-acrylate composite materials are all existing materials. In this embodiment, both the light guide strip 31 and the light guide sheet 32 ​​are made of silicone material, which needs to have a certain light transmittance for light transmission and reflection. For example, a silicone material with a light transmittance of 93% can be selected.

[0023] Correspondingly, the bottom shell 1 is made of white material to reflect light, allowing the light-emitting effect of the light guide 32 to be observed. Preferably, the mask 2 can also be made of white material; of course, other colors can be selected as needed. The light-emitting element 4 is an existing LED module, which is electrically connected to the wiring harness 9 and serves as a light source to emit light from the light guide strip 31.

[0024] Please review Figures 1-3The vehicle-mounted flexible luminous marker light also includes a first protective shell 6 and a second protective shell 7. The first protective shell 6 and the second protective shell 7 are detachably connected. When the first protective shell 6 and the second protective shell 7 are connected, a second receiving cavity 8 is formed inside, and the light-emitting element 4 is disposed in the second receiving cavity 8. Specifically, the first protective shell 6 and the second protective shell 7 are detachably snapped together, which protects the light-emitting element 4 and also facilitates installation.

[0025] In summary, the bottom shell 1 and the face shield 2 are located on the steering wheel of the car, and the light source 4 is located away from the bottom shell 1 and the face shield 2. The light source 4 conducts light through the light guide strip 31 and the light guide sheet 32. In this way, the hard material on the light source 4 can be prevented from flying out and causing damage to the human body when the airbag is deployed, which greatly reduces the risk of injury.

[0026] Example 2 The difference between this embodiment and Embodiment 1 is that the side of the light guide 32 facing the bottom groove of the receiving groove 11 is a flat surface, so that the light inside the light guide 32 is reflected to the outside.

[0027] Example 3 like Figure 6 As shown, Figure 6 This is another three-dimensional structural diagram of a flexible luminous marker light for vehicles. The difference between this embodiment and Embodiment 1 or Embodiment 2 is that the light-emitting element 4 is an existing LED module, which is directly plugged into the plug and does not need to be connected through the wiring harness 9.

[0028] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A flexible luminous marker light for vehicles, characterized in that, include: The base (1), face mask (2), light guide (3) and light emitter (4) are connected. The light guide (3) includes a light guide strip (31) and a light guide sheet (32). The base (1) is connected to the face mask (2), and the two form a first receiving cavity (5). The light guide sheet (32) is located in the first receiving cavity (5). The light-emitting end of the light emitter (4) is directed towards the end of the light guide strip (31) away from the light guide sheet (32). The light emitted from the light-emitting end of the light emitter (4) is transmitted to the light guide sheet (32) through the light guide strip (31), and the light guide sheet (32) produces a light-emitting effect.

2. The flexible luminous marker light for vehicles according to claim 1, characterized in that, The bottom shell (1) has a receiving groove (11), and the light guide strip (31) and the light guide sheet (32) are both located in the receiving groove (11).

3. The flexible luminous marker light for vehicles according to claim 1, characterized in that, The bottom shell (1) has a slot (12), and the face mask (2) has a strip (21), which is engaged in the slot (12).

4. The flexible luminous marker light for vehicles according to claim 1, characterized in that, It also includes a first protective shell (6) and a second protective shell (7) that can be detachably connected, and the first protective shell (6) and the second protective shell (7) together constitute a second receiving cavity (8), and the light-emitting body (4) is located in the second receiving cavity (8).

5. The flexible luminous marker light for vehicles according to claim 1, characterized in that, The side of the light guide (32) facing the bottom shell (1) is flat, or the side of the light guide (32) facing the bottom shell (1) is provided with multiple recesses (321).

6. The flexible luminous marker light for vehicles according to any one of claims 1-5, characterized in that, The light guide (3) is made of light-guide grade soft rubber material.

7. The flexible luminous marker light for vehicles according to claim 6, characterized in that, The light-guiding soft adhesive material is: silicone, optical-grade TPU, acrylate elastomer, or silicone-acrylate composite material.

8. The flexible luminous marker light for vehicles according to any one of claims 1-5, characterized in that, The bottom shell (1) is white.

9. The flexible luminous marker light for vehicles according to any one of claims 1-5, characterized in that, The light-emitting body (4) is an LED module.