Optical fiber type photoelectric separation exterior decorative lamp and automobile

Abstract

The utility model belongs to the field of exterior lamps. The exterior lamp comprises a light-emitting module, an optical fiber and a lamp body. The light-emitting module is connected with the lamp body through optical fibers. The light-emitting module comprises an optical fiber plug connector, a light source, a circuit board, a wire harness plug connector, a heat dissipation piece and a shell. The optical fiber plug connector is arranged on the shell and is used for connecting an optical fiber; the wire harness connector is arranged on the shell and used for being connected with a vehicle body wire harness. The heat dissipation piece is assembled in the shell and used for heat dissipation of the light-emitting module. The circuit board is assembled in the shell, and the light source is connected to the circuit board and faces the optical fiber connector clip. Compared with the prior art, the problems that an exterior trimming lamp in the prior art is insufficient in structural space, poor in heat dissipation and limited in brightness are solved. According to the scheme, the light-emitting module (the light source and the controller) and the lamp body (the lampshade and the lamp shell) of the exterior lamp are separately arranged in an optical fiber light transmission mode, so that the light-emitting module is not limited by the structure of the lamp body of the exterior lamp any more, and the problems of insufficient space and heat dissipation of the exterior lamp are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of exterior lamps, specifically relates to a kind of optical fiber type photoelectric separation exterior lamps and a kind of car. BACKGROUND

[0002] At present, the structure of exterior lamp is more and more complex, and the function is more and more, including from the size very small strip decorative strip lamp to the grid lamp occupying the whole car front face. However, with the complexity of exterior lamp improving, there is a close mutual relationship among its internal structure, heat dissipation performance and light emitting effect;Therefore, when designing the exterior lamp, the mutual restriction and trade-off among multiple performances need to be considered as a whole, which leads to the exterior lamp often difficult to meet the performance requirements of small and compact structure, excellent heat dissipation and high luminance.

[0003] Specifically, the existing exterior lamp is to place the LED circuit board in the lamp body, which needs lampshade and lampshell sealing to ensure the performance of the whole lamp, such as CN110617456A discloses a kind of automobile combination tail light using laser decoration plate, CN209926268U discloses a kind of new LED and bulb combination type commercial vehicle rear tail lamp and CN222256209U discloses tail lamp assembly for vehicle and vehicle, etc. There are many kinds of defects under this kind of design:

[0004] 1) Space is insufficient;More and more types of small size exterior lamp put forward higher and higher requirements to light source layout space, and part of small size LED circuit board is difficult to be arranged in the lamp body;

[0005] 2) Heat dissipation problem;The structure in the lamp body is complex, and the large heat of LED circuit board is difficult to dissipate, which needs additional cost for complex heat dissipation design, especially active heat dissipation design, which is particularly obvious and prominent in small size lamp;

[0006] 3) Difficulty in adjusting chroma;The chroma of exterior lamp can only be adjusted by adjusting the color of LED or changing the surface treatment of parts, but the adjustment of these two schemes in the development process is difficult, which will cause a series of other problems such as structure design and performance requirement;

[0007] 4) High maintenance cost;The exterior lamp needs to be replaced when it is damaged, such as headlamp and tail lamp, and the maintenance cost of grid lamp will be higher;

[0008] 5) Limited brightness;Due to the limitation of space and heat dissipation, the brightness of part of exterior lamp cannot be high;

[0009] 6) Electronic and EMC problem;Each exterior lamp project needs separate electronic and EMC design, which further improves the design complexity and test cost;

[0010] Therefore, a new type of exterior lighting structure is needed to avoid as much as possible the problems of insufficient space, insufficient heat dissipation, difficulty in adjusting color, high maintenance costs, limited brightness, and expensive electronic and EMC costs of existing exterior lighting. Utility Model Content

[0011] The purpose of this invention is to provide a fiber-optic photoelectric separation exterior lamp and an automobile to solve at least one of the aforementioned problems, thereby addressing the issues of insufficient structural space, poor heat dissipation, and limited brightness in existing exterior lamps. This solution utilizes fiber optic light transmission to separate the light-emitting module (light source and controller) from the lamp body (lamp cover and lamp housing), freeing the light-emitting module from the limitations of the lamp body structure and resolving the issues of insufficient space and heat dissipation in exterior lamps.

[0012] The objective of this utility model is achieved through the following technical solution:

[0013] The first aspect of this utility model discloses a fiber optic photoelectric separation exterior lamp, including a light-emitting module, an optical fiber, and a lamp body;

[0014] The light-emitting module is connected to the lamp body via optical fiber, thus separating the light-emitting module from the lamp body.

[0015] The light-emitting module includes an optical fiber connector, a light source, a circuit board, a wire harness connector, a heat sink, and a housing;

[0016] The fiber optic connector is mounted on the housing and is used to connect fiber optic cables; the wire harness connector is mounted on the housing and is used to connect vehicle body wire harnesses.

[0017] The heat sink is assembled inside the housing and is used for heat dissipation of the light-emitting module;

[0018] The circuit board is assembled inside the housing, the light source is connected to the circuit board, and the light source is positioned facing the fiber optic connector.

[0019] Preferably, the light-emitting module further includes a filter;

[0020] The filter is disposed between the light source and the fiber optic connector to filter the light emitted by the light source.

[0021] The filter can be detachably assembled inside the housing, such as by plugging or snapping.

[0022] Preferably, the fiber optic connector is bolted to the housing, and the fiber optic connector and the housing are sealed by a sealing element; the wire harness connector is bolted to the housing, and the wire harness connector and the housing are sealed by a sealing element.

[0023] Preferably, the light source is an LED light source or an LD light source.

[0024] Preferably, the heat sink is a heat sink used for passive heat dissipation of the light source and circuit board.

[0025] Preferably, the outer shell is made of metal (such as aluminum alloy, stainless steel, etc.), or the outer shell is made of plastic (such as PC+ABS, PC, PA, etc.) with a metal coating (such as aluminum coating, etc.) on the inner wall surface.

[0026] Preferably, the optical fiber includes a core, a cladding layer, and a terminal;

[0027] The coating layer covers the outside of the fiber core;

[0028] The terminals are connected to both ends of the fiber core;

[0029] The optical fiber is connected to the optical fiber connector of the light-emitting module and the lamp body respectively through terminals set at both ends of the fiber core, so that the light emitted by the light source in the light-emitting module is transmitted to the lamp body through the fiber core of the optical fiber.

[0030] Preferably, the lamp body includes a lampshade and a lamp housing;

[0031] The lampshade is mounted on the lamp housing and is used to transmit light from the optical fiber;

[0032] The lamp housing is used for mounting on a car body, and the lamp housing is provided with an optical fiber interface for connecting optical fibers.

[0033] Preferably, the lampshade is made of PC or PMMA; the lamp housing is made of PC+ABS or PP-GF30.

[0034] The second aspect of this utility model discloses an automobile, wherein the automobile is equipped with exterior lights on its body, and the exterior lights are fiber optic photoelectric separation exterior lights as described in any of the preceding claims.

[0035] The lamp body is mounted on the surface of the car body, the light-emitting module is located inside the car body, and the optical fiber connects the lamp body and the light-emitting module.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] This solution structurally separates the lamp body and the light-emitting module of the exterior light. The light-emitting module is self-sealed, and optical fiber is used to connect the lamp body and the light-emitting module for light transmission. This isolates the electronic components and the terminal light-emitting part, and has the following advantages:

[0038] 1. Space: The light-emitting module is external and separate from the lamp body, and can be arranged arbitrarily; the light source can form a one-to-many form through the arrangement of optical fibers, the lamp body at the light-emitting end can be miniaturized, and the optical fiber is flexible and can be arranged arbitrarily inside the vehicle body;

[0039] 2. Heat dissipation: The large space of the module is conducive to heat dissipation. The housing of the light-emitting module can be a metal shell, which has a high thermal conductivity and a good heat dissipation effect;

[0040] 3. Color: The color filter is detachably mounted inside the housing, making it easy to replace and adjust the light color.

[0041] 4. Brightness: As mentioned above, this solution has solved the heat dissipation problem, so the brightness can be effectively improved by directly increasing the power of the light source;

[0042] 5. Electronics and EMC: This structure adopts a photoelectric separation structure, and the optical fiber is not subject to electromagnetic interference. Combined with the use of a metal shell (or inner wall PVD metal film) for the light-emitting module, the design difficulty of electronics and EMC is greatly simplified. Furthermore, the light-emitting module can be made into a universal structure to reduce the testing costs of electronics and EMC. The material achieves a batch effect to reduce costs.

[0043] 6. Maintainability: The light-emitting module can be replaced as a whole or the internal structure can be replaced independently. It is easy to repair and expand, and has high convenience of use. At the same time, the lamp body, optical fiber and light-emitting module in this structure can be combined arbitrarily as standardized modules, so that the remaining structure can be reused after partial damage.

[0044] 7. The light entering the lamp body is free of ultraviolet rays, which is beneficial for the aluminum plating and painting of the lamp body;

[0045] 8. Transmission via optical fiber will not affect the display of the pattern, and pattern design can be carried out in the large space of the light-emitting module to make the displayed pattern richer. Attached Figure Description

[0046] Figure 1 A schematic diagram of a fiber optic photoelectric separation exterior lamp;

[0047] Figure 2 This is a schematic diagram of the structure of the light-emitting module;

[0048] Figure 3 This is a schematic cross-sectional view of the optical fiber structure;

[0049] In the picture:

[0050] 10 - Light-emitting module; 20 - Optical fiber; 30 - Lamp body;

[0051] 1-Fiber optic connector; 2-Filter; 3-Sealing component; 4-Light source; 5-Circuit board; 6-Wire harness connector; 7-Heat sink; 8-Housing;

[0052] 21-Core; 22-Covering layer. Detailed Implementation

[0053] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0054] Example

[0055] A fiber optic photoelectric separation exterior light, such as Figures 1-3 As shown, it includes a light-emitting module 10, an optical fiber 20, and a lamp body 30;

[0056] The light-emitting module 10 is connected to the lamp body 30 via an optical fiber 20, so that the light-emitting module 10 and the lamp body 30 are separately set.

[0057] The light-emitting module 10 includes an optical fiber connector 1, a light source 4, a circuit board 5, a wire harness connector 6, a heat sink 7, and a housing 8;

[0058] The fiber optic connector 1 is disposed on the housing 8 and is used to connect the fiber optic cable 20; the wire harness connector 6 is disposed on the housing 8 and is used to connect the vehicle body wire harness.

[0059] The heat sink 7 is assembled inside the housing 8 and is used for heat dissipation of the light-emitting module 10;

[0060] The circuit board 5 is assembled inside the housing 8, the light source 4 is connected to the circuit board 5, and the light source 4 is positioned facing the fiber optic connector 1.

[0061] More specifically, in this embodiment:

[0062] like Figure 1 As shown, the fiber optic photoelectric separation exterior light consists of three parts: a light-emitting module 10, an optical fiber 20, and a lamp body 30.

[0063] Light-emitting module 10, specifically as follows Figure 2 As shown, it further includes an optical fiber connector 1, a filter 2, a seal 3, a light source 4, a circuit board 5, a wire harness connector 6, a heat sink 7, and a housing 8.

[0064] The fiber optic connector 1 and the wire harness connector 6 are respectively mounted on the housing 8 and extend out of the surface of the housing 8. Thus, the fiber optic 20 can be connected to the light-emitting module 10 through the fiber optic connector 1, and the vehicle body wire harness can be connected to the light-emitting module 10 through the wire harness connector 6. Specifically, in this embodiment, the fiber optic connector 1 and the wire harness connector 6 are respectively disposed on a pair of opposite surfaces of the housing 8, taking the form of fiber optic 20 interface (female head) and wire harness interface (female head). There are 6 fiber optic connectors 1 and 2 wire harness connectors 6, each of which is fixedly mounted on the housing 8 by bolts.

[0065] Circuit board 5 is installed inside housing 8, located in the center, and is electrically connected to wiring harness connector 6 to exchange signals with the vehicle's central control system via the vehicle body wiring harness. Circuit board 5 is a PCBA, integrating a controller (such as an MCU, ASIC, FPGA, etc., specifically commercially available Infineon Aurix2G TC3XX series, TI TLC6C5724-Q1, Aladdini ND83080, Stream G0 iND83000, Grape iND83220, etc.) to control the state of light source 4 (such as on / off, emission mode, etc., which can directly adopt existing technology; this solution does not modify it). Light source 4 is electrically connected to circuit board 5, and light source 4 is positioned facing the fiber optic connector 1. The light source 4 can be selected as an LED light source 4 or an LD light source 4 according to the design requirements. In this embodiment, there are 8 light sources 4 arranged at equal intervals parallel to the wall where the fiber optic connector 1 is located. In other embodiments, the number of light sources 4 can be less than the number of fiber optic connectors 1, so that the light sources 4 and the fiber optic connectors 1 form a one-to-many relationship.

[0066] A filter 2 is detachably mounted between the light source 4 and the fiber optic connector 1. This filter 2 is used to adjust and change the chromaticity of the light emitted by the light source 4, thereby changing the chromaticity of the light emitted by the lamp body 30. The detachable filter 2, such as through plug-in or snap-fit, allows for easy replacement and adjustment to obtain the target light chromaticity. Compared to existing methods of adjusting the color of the light source 4 and the surface treatment of parts, this method is easier to implement, has a wider adjustment range, and is less difficult to achieve. Correspondingly, in this embodiment, the outer shell 8 is assembled from two half-shells using snap-fit ​​connections (such as snap-fit ​​blocks + snap-fit ​​slots) and bolts.

[0067] The light-emitting module 10 also has a heat sink 7 inside, as shown in the following figure. Figure 2 As shown, in this embodiment, the heat sink 7 is disposed between the circuit board 5 and the wire harness connector 6. The heat sink 7 in this embodiment uses a passive heat sink, such as a heat sink fin, which contacts the heat-generating component on the circuit board 5 and the outer casing 8 for heat transfer and dissipation. Correspondingly, since the light-emitting module 10 is a separate structure from the lamp body 30 that actually outputs the light, the casing can be made of a metal material with high thermal conductivity (such as aluminum alloy, stainless steel, etc.). Furthermore, to ensure the sealing of the light-emitting module 10, sealing elements 3 are provided at the assembly positions of the outer casing 8, such as the assembly point between the fiber optic connector 1 and the outer casing 8, the assembly point between the wire harness connector 6 and the outer casing 8, and the assembly point between the half-shells. Specifically, O-rings can be used to achieve self-sealing of the light-emitting module 10.

[0068] Lamp body 30, such as Figure 1As shown, it includes a lampshade and a lamp housing, which are assembled to form a lamp body 30 with an internal cavity. The lampshade, which can be made of PC or PMMA, is the light-transmitting component of the exterior lamp. Its surface can be surface-treated as needed, such as coating with nano-silica and UV curing to form a hardened coating, or etching to form a microstructure to change the surface texture and light transmission effect. The lamp housing, which can be made of PC+ABS or PP-GF30, is used to assemble the lamp body 30 onto the car body. The lamp housing has an optical fiber 20 interface for inserting optical fiber 20, so that the light transmitted from the optical fiber 20 can pass through the lamp housing to realize the illumination of the exterior lamp.

[0069] Fiber 20, such as Figure 3 As shown, it consists of a central fiber core 21, a cladding layer 22 covering the outside of the fiber core 21, and terminals connecting to both ends of the fiber core 21. The fiber core 21 can be made of quartz or other existing conventional optical fiber core 20 materials, enabling efficient transmission of light from the optical fiber 20. The outer cladding layer 22 protects the fiber core 21 and optimizes light transmission efficiency. It can be a cladding layer 22 used in existing conventional optical fibers, such as carbon coating or metal (Ni, Cu, Al, etc.) coating. The terminals (male ends) at both ends of the fiber core 21 are used to connect to the fiber optic connector 1 of the light-emitting module 10 and the fiber optic interface 20 of the lamp body 30, respectively, to guide the light emitted by the light source 4 into the lamp body 30.

[0070] This fiber-optic photoelectric split exterior light reduces constraints on the structural design of each component by separating the high-heat-generating light-emitting module 10 from the space-constrained lamp body 30, and transmitting light between them via optical fiber 20. In this fiber-optic photoelectric split exterior light, the light-emitting module 10 is no longer constrained by the structure of the lamp body 30; its layout and heat dissipation design can be independently designed according to its power and light emission requirements to ensure its luminous effect meets design needs. Simultaneously, since the lamp body 30 only receives light transmitted from the optical fiber 20, it avoids high heat generation and electromagnetic interference issues. Therefore, its styling can be further optimized to match the car body design, and its structural dimensions can be further reduced to meet design requirements. In summary, this fiber-optic photoelectric split exterior light significantly increases the design freedom for both the light-emitting module 10 and the lamp body 30, allowing each to be designed according to specific design and functional needs.

[0071] When this fiber optic photoelectric separation exterior light is used, the light body 30 is mounted on the surface of the car body, while the light-emitting module 10 can be set inside the car body. The fiber optic cable 20 connecting the two can be set according to the wiring of the car body.

[0072] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. An optical fiber light photo-separation exterior trim lamp, characterized by, The application relates to a fiber-optic photoelectric separation exterior trim lamp, which comprises a light-emitting module (10), a fiber (20) and a lamp body (30). The light-emitting module (10) is connected with the lamp body (30) through the fiber (20), and the light-emitting module (10) and the lamp body (30) are arranged separately. The light-emitting module (10) comprises a fiber connector (1), a light source (4), a circuit board (5), a wire harness connector (6), a heat dissipation member (7) and a shell (8). The fiber connector (1) is arranged on the shell (8) and is used for connecting the fiber (20); the wire harness connector (6) is arranged on the shell (8) and is used for connecting a vehicle body wire harness. The heat dissipation member (7) is arranged in the shell (8) and is used for dissipating heat of the light-emitting module (10). The circuit board (5) is arranged in the shell (8), the light source (4) is connected to the circuit board (5), and the light source (4) is arranged towards the fiber connector (1).

2. A fiber optic photo-splittable exterior trim lamp according to claim 1, wherein, The light-emitting module (10) further comprises a filter (2). The filter (2) is arranged between the light source (4) and the fiber connector (1) and is used for filtering light emitted by the light source (4). The filter (2) is detachably arranged in the shell (8).

3. A fiber optic photo-splittable exterior trim lamp according to claim 1, wherein, The fiber connector (1) is bolted to the shell (8) and is sealed with a sealing member (3); the wire harness connector (6) is bolted to the shell (8) and is sealed with a sealing member (3).

4. A fiber optic photo-splittable exterior trim lamp according to claim 1, wherein, The light source (4) is an LED light source or an LD light source.

5. A fiber optic photo-splittable exterior trim lamp according to claim 1, wherein, The heat dissipation member (7) is a heat dissipation fin and is used for passive heat dissipation of the light source (4) and the circuit board (5).

6. A fiber optic photo-splittable exterior trim lamp according to claim 1, wherein, The shell (8) is made of metal or is made of plastic with a metal coating on the inner wall surface.

7. A fiber optic photo-splittable exterior trim lamp according to claim 1, wherein, The fiber (20) comprises a fiber core (21), a cladding layer (22) and a terminal. The cladding layer (22) covers the fiber core (21). The terminal is connected to two ends of the fiber core (21). The fiber (20) is connected to the fiber connector (1) of the light-emitting module (10) and the lamp body (30) through the terminals arranged at two ends of the fiber core (21), and light emitted by the light source (4) in the light-emitting module (10) is transmitted to the lamp body (30) through the fiber core (21) of the fiber (20).

8. A fiber optic photo-splittable exterior trim lamp according to claim 1, wherein, The lamp body (30) comprises a lamp shade and a lamp shell. The lamp shade is arranged on the lamp shell and is used for transmitting light from the fiber (20). The lamp shell is arranged on a vehicle body and is provided with a fiber interface for connecting the fiber (20).

9. A fiber optic photo-splittable exterior trim lamp according to claim 8, wherein, The lamp shade is made of PC or PMMA; and the lamp shell is made of PC+ABS or PP-GF30.

10. An automobile characterized by comprising: The vehicle is provided with an exterior trim lamp, and the exterior trim lamp is the fiber-optic photoelectric separation exterior trim lamp according to any one of claims 1-9. The lamp body (30) is arranged on the surface of the vehicle body, the light-emitting module (10) is arranged in the vehicle body, and the fiber (20) connects the lamp body (30) and the light-emitting module (10).

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