A mounting structure for combined light guide

Abstract

The present invention belongs to the technical field of automobile lighting, and particularly relates to an installation structure of a combined light guide, comprising a first bracket, a second bracket, a third bracket and a plurality of light guides, wherein the first bracket and the second bracket are combined to form a closed space with openings at both ends, the third bracket is used to close an opening at one end of the closed space, the first bracket is sequentially provided with a plurality of first grooves, the second bracket is sequentially provided with a plurality of second grooves, the light guide is arranged in a group of the first grooves and the second grooves, the light guide is radially extended with positioning feet, and the second bracket is provided with positioning grooves matched with the positioning feet; the head and tail of the light guide are respectively open toward the two ends of the closed space, the head of the light guide passes through the third bracket, the head of the light guide extends with a limiting foot, the limiting foot contacts and positions a PCB board, and an LED light source on the PCB board is incident from a light incident surface of the head of the light guide.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile lighting, and in particular relates to an installation structure of a combined light guide. Background Art

[0002] In the field of automotive lighting, light sources including LED light sources are often used and placed in various lamps including headlights. When using these light sources, light guides are usually used in combination, and multiple light guides are used to adapt to the shape of the lamp and the lighting effect. However, it is difficult to install light guides, especially multiple light guides. Therefore, how to achieve good matching, good positioning and assembly of multiple light guides, and prevent light leakage when the lamp is lit, and how to prevent the existing light guide light-introducing surface from being in contact with or close to the LED light source, and how to prevent the LED light source from burning the light guide light surface, pose new challenges to lamp design. Summary of the invention

[0003] In order to solve the problems in the prior art of difficulty in installing and positioning multiple light guides, easy light leakage when the lamp is lit, and LED light source burning the light guide into the light surface, the present invention provides an installation structure for a combined light guide.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: an installation structure of a combined light guide, comprising a first bracket, a second bracket, a third bracket and a plurality of light guides, the first bracket and the second bracket enclose a closed space with openings at both ends, the third bracket is used to close an opening at one end of the closed space, a plurality of first grooves are sequentially opened on the first bracket, a plurality of second grooves are sequentially opened on the second bracket, the light guide is arranged in a group of the first grooves and the second grooves, the light guide is radially extended with positioning feet, and the second bracket is provided with positioning grooves that cooperate with the positioning feet; the head and tail of the light guide are respectively open toward the two ends of the closed space, the head of the light guide passes through the third bracket, the head of the light guide extends a limiting foot, the limiting foot contacts and positions with a PCB board, and the LED light source on the PCB board is incident from the light incident surface of the head of the light guide.

[0005] Preferably, the tail of the light guide is provided with a mounting foot, and the first bracket is provided with a stud that cooperates with the mounting foot. The mounting foot and the stud cooperate to further enhance the reliability and stability of the light guide installation and positioning on the first bracket, and the fixing structure is simple and easy to assemble.

[0006] Preferably, the third bracket is provided with a mounting interface that cooperates with the head of the light guide, and the mounting interface extends up and down to form a through tubular structure. The number of mounting interfaces is determined according to the number of light guides, and the mounting interface extending up and down to form a through tubular structure effectively prevents light leakage from the head of the light guide, which is conducive to the transmission of light.

[0007] Preferably, buckles are provided on both sides of the first bracket, and hooks are provided on both sides of the second bracket for engaging with the buckles. The engaging engagement between the buckles and the hooks facilitates the positioning and assembly of the first bracket and the second bracket.

[0008] Preferably, the first bracket is provided with three first screw holes, and the first screw holes are used for fixing the first bracket to the second bracket. The second bracket is provided with first screw columns that match the first screw holes, and the first screw holes and the first screw columns match to facilitate the fixed connection and assembly of the first bracket and the second bracket, and the assembly structure is simple and reliable.

[0009] Preferably, the third bracket is provided with three second screw holes, which are distributed in a triangular shape on the third bracket, and the second screw holes are used for fixed connection between the third bracket and the second bracket. The second bracket is provided with a second screw column that cooperates with the second screw hole, and the second screw hole cooperates with the second screw column to facilitate the fixed connection and assembly of the second bracket and the third bracket, and the assembly structure is simple and reliable.

[0010] Preferably, the third bracket is provided with three third screw holes, which are distributed on the third bracket in a triangular shape, and the third screw holes are used to fix the third bracket to the lamp housing; the PCB board is fixedly arranged on the lamp housing. The third bracket is fixedly connected to the lamp housing through the third screw holes, and the connection method is simple and reliable.

[0011] Furthermore, the first bracket is a white non-transparent part, and the second bracket is a black non-transparent part. The first bracket is a white non-transparent part, which is conducive to light transmission, and the second bracket is a black non-transparent part, which is conducive to cost saving.

[0012] Furthermore, the number of the light guides is three.

[0013] Beneficial effects: The installation structure of the combined light guide of the present invention has a limit foot that contacts and positions the PCB board, thereby ensuring the direct positioning of the light guide and the PCB board, so that the light guide light-introducing surface is no longer in direct contact with the LED light source, and there is a certain gap between the light guide light-introducing surface and the LED light source, thereby avoiding melting caused by the light guide being too close to the LED light source and excessive heat; because the light guide is long and has good toughness, the first bracket and the second bracket are used to well and conveniently fix multiple transparent light guides, and the multiple transparent light guides, the first bracket and the second bracket are fixed to the lamp housing through the third bracket, so that good coordination, good positioning and assembly of the multiple light guides can be achieved, and accurate positioning of the light guide and the LED light source can be achieved; the enclosed space enclosed by the first bracket, the second bracket and the third bracket can effectively prevent light leakage when the lamp is lit, thereby improving the aesthetics of the car lamp; the light guide is pre-assembled in the lampshade subassembly and then assembled with the lamp housing, thereby solving the complexity and diversity of the lamp shape due to structural limitations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the installation structure of the combined light guide of the present invention;

[0015] Figure 2 It is a three-dimensional exploded schematic diagram of the installation structure of the combined light guide of the present invention;

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the first light guide of the installation structure of the combined light guide of the present invention;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the second light guide of the installation structure of the combined light guide of the present invention;

[0018] Figure 5 It is a schematic diagram of the three-dimensional structure of the third light guide of the installation structure of the combined light guide of the present invention;

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the first bracket of the mounting structure of the combined light guide of the present invention;

[0020] Figure 7 is a side view schematic diagram of a second bracket of the mounting structure of the combined light guide of the present invention;

[0021] Figure 8 yes Figure 7 Schematic cross-sectional view along the AA direction;

[0022] Fig. 9 yes Figure 7 Schematic cross-sectional view in the CC direction;

[0023] Fig.10 is a front view schematic diagram of a third bracket of the mounting structure of the combined light guide of the present invention;

[0024] Fig.11 It is a schematic diagram of the internal structure of the installation structure of the combined light guide of the present invention;

[0025] In the figure: 1. first light guide, 11. positioning foot, 12. limiting foot, 13. mounting foot, 2. second light guide, 3. third light guide, 4. first bracket, 41. first groove, 42. stud, 43. buckle, 44. first screw hole, 5. second bracket, 51. second groove, 52. positioning groove, 53. hook, 54. first screw column, 55. second screw column, 6. third bracket, 61. mounting interface, 62. second screw hole, 63. third screw hole, 64. positioning pin, 7. PCB board, 71. LED light source, 8. lamp housing. DETAILED DESCRIPTION

[0026] Example

[0027] like Figures 1 to 11 As shown, a mounting structure of a combined light guide comprises a first bracket 4, a second bracket 5, a third bracket 6 and a plurality of light guides. In this embodiment, the number of the light guides is three, namely, a first light guide 1, a second light guide 2 and a third light guide 3. The first bracket 4 and the second bracket 5 enclose a closed space with openings at both ends. The third bracket 6 is used to close an opening at one end of the closed space. The first bracket 4 is sequentially provided with three first grooves 41, and the second bracket 5 is sequentially provided with three second grooves 51. The light guide is arranged in a group of the first grooves 41 and the second grooves 51. The radial direction of the light guide A positioning foot 11 is extended, and a positioning groove 52 cooperating with the positioning foot 11 is provided on the second bracket 5; the head and tail of the light guide are opened towards the two ends of the enclosed space respectively, and the head of the light guide passes through the third bracket 6, and the third bracket 6 is provided with a mounting interface 61 cooperating with the head of the light guide. The number of the mounting interfaces 61 corresponds to the number of the light guides, and the mounting interfaces 61 extend up and down to form a through tubular structure. A limiting foot 12 is extended from the head of the light guide, and the limiting foot 12 is in contact with the PCB board 7 for positioning, and the LED light source 71 on the PCB board 7 is incident from the light incident surface of the head of the light guide.

[0028] In order to facilitate the assembly of the installation structure of the light guide and to ensure that the connection structure is stable and reliable, a mounting foot 13 is provided at the tail of the light guide, and a stud 42 that cooperates with the mounting foot 13 is provided on the first bracket 4; buckles 43 are provided on both sides of the first bracket 4, and hooks 53 that are engaged with the buckles 43 are provided on both sides of the second bracket 5; three first screw holes 44 are provided on the first bracket 4, and a first screw column 54 that cooperates with the first screw hole 44 is provided on the second bracket 5. The first screw hole 44 is used to fix the first bracket 4 and the second bracket 5; three second screw holes 62 are provided on the third bracket 6, and the second screw holes 63 are provided on the third bracket 6. The bracket 5 is provided with a second screw column 55 which cooperates with the second screw hole 62. The three second screw holes 62 are distributed in a triangle on the third bracket 6. The second screw hole 62 is used to fix the third bracket 6 to the second bracket 5; the third bracket 6 is provided with three third screw holes 63. The three third screw holes 63 are distributed in a triangle on the third bracket 6. The third screw hole 63 is used to fix the third bracket 6 to the lamp housing 8. In order to improve the assembly positioning accuracy of the third bracket 6 and the lamp housing 8, a positioning pin 64 is provided between the third bracket 6 and the lamp housing 8; the PCB board 7 is fixedly set on the lamp housing 8.

[0029] The first bracket 4 is a white non-transparent part, and the second bracket 5 is a black non-transparent part.

[0030] The assembly process of the mounting structure of the combined light guide:

[0031] First, the first light guide 1, the second light guide 2 and the third light guide 3 are assembled into the first groove 41 of the corresponding first bracket 4 in sequence, and the corresponding positioning groove 52 of the second bracket 5 cooperates with the positioning feet 11 of the first light guide 1, the second light guide 2 and the third light guide 3 for positioning. After the hook 53 of the second bracket 5 is engaged with the buckle 43 of the first bracket 4, each light guide is fixedly connected to the first bracket 4 by the mounting foot 13 and the stud 42, and then the second bracket 5 is fixedly connected to the first bracket 4 by the first screw hole 44 and the first screw column 54. Then, the third bracket 6 is sleeved on the head of the light guide through the mounting interface 61, and then the third bracket 6 is fixedly connected to the second bracket 5 by the second screw hole 62 and the second screw column 55. Then, the third bracket 6 is fixedly connected to the lamp housing 8 by the third screw hole 63, and the PCB board 7 is fixedly connected to the lamp housing 8. At this time, the limit foot 12 is contacted and positioned with the PCB board 7, and the assembly of the mounting structure of the combined light guide is completed.

[0032] Here’s how it works:

[0033] The LED light source 71 on the PCB board 7 enters from the light incident surface of the head of the light guide and is emitted from the tail of the light guide. The limit pin 12 is in contact with the PCB board 7 to ensure direct positioning of the light guide and the PCB board 7, avoiding melting caused by the light guide being too close to the LED light source 71 and excessive heat; and the light guide is located in a closed space surrounded by the first bracket 4, the second bracket 5 and the third bracket 6, effectively preventing light leakage when the lamp is lit.

Claims

1. A combined light guide installation structure for automotive lighting; characterized in that: The invention comprises a first bracket (4), a second bracket (5), a third bracket (6) and a plurality of light guides, wherein the first bracket (4) and the second bracket (5) enclose a closed space with openings at both ends, the third bracket (6) is used to close one end opening of the closed space, the first bracket (4) is sequentially provided with a plurality of first grooves (41), the second bracket (5) is sequentially provided with a plurality of second grooves (51), the light guide is arranged in a group of the first grooves (41) and the second grooves (51), the light guide is radially extended with a positioning foot (11), the second bracket (5) is provided with a positioning foot (11) The light guide has a first bracket (4) and a second bracket (52) arranged on the first bracket (4); the light guide has a head and a tail that are respectively opened toward the two ends of the enclosed space; the head of the light guide passes through the third bracket (6); a limiting foot (12) extends from the head of the light guide; the limiting foot (12) contacts and positions the PCB board (7); an LED light source (71) on the PCB board (7) is incident from the light incident surface of the head of the light guide; the tail of the light guide is provided with a mounting foot (13); the first bracket (4) is provided with a stud (42) that matches the mounting foot (13); the number of the light guides is three, namely, a first light guide (1), a second light guide (2) and a third light guide (3). (3); buckles (43) are provided on both sides of the first bracket (4), and hooks (53) that are engaged with the buckles (43) are provided on both sides of the second bracket (5); three first screw holes (44) are provided on the first bracket (4), and a first screw column (54) that is engaged with the first screw hole (44) is provided on the second bracket (5), and the first screw hole (44) is used to fix the first bracket (4) and the second bracket (5); three second screw holes (62) are provided on the third bracket (6), and a second screw column (54) that is engaged with the second screw hole (62) is provided on the second bracket (5); The nail column (55) comprises three second screw holes (62) distributed in a triangular shape on the third bracket (6), and the second screw holes (62) are used for fixing the third bracket (6) and the second bracket (5) in connection; the third bracket (6) comprises three third screw holes (63), and the three third screw holes (63) are distributed in a triangular shape on the third bracket (6), and the third screw holes (63) are used for fixing the third bracket (6) and the lamp housing (8); a positioning pin (64) is provided between the third bracket (6) and the lamp housing (8); the PCB board (7) is fixedly provided on the lamp housing (8);First, the first light guide (1), the second light guide (2) and the third light guide (3) are sequentially assembled into the first groove (41) of the corresponding first bracket (4), and the positioning groove (52) of the corresponding second bracket (5) cooperates with the positioning feet (11) of the first light guide (1), the second light guide (2) and the third light guide (3) for positioning, and the hook (53) of the second bracket (5) is engaged with the buckle (43) of the first bracket (4), and then the light guides are fixedly connected to the first bracket (4) through the cooperation of the mounting feet (13) and the studs (42), and then the first screw holes (44) and the first screws are used to fix the light guides to the first bracket (4). The column (54) cooperates with the locking to fix the second bracket (5) and the first bracket (4), and then the third bracket (6) is sleeved on the head of the light guide through the installation interface (61), and then the third bracket (6) is fixedly connected to the second bracket (5) through the second screw hole (62) and the second screw column (55), and then the third bracket (6) is fixedly connected to the lamp housing (8) through the third screw hole (63), and the PCB board (7) is fixedly connected to the lamp housing (8), and the limit foot (12) is in contact with the PCB board (7) to complete the assembly of the installation structure of the combined light guide. ; 2. The mounting structure of the combined light guide according to claim 1, characterized in that: The third bracket (6) is provided with a mounting interface (61) that matches the head of the light guide, and the mounting interface (61) extends up and down to form a through tubular structure.

3. The mounting structure of the combined light guide according to claim 1, characterized in that: Buckles (43) are provided on both sides of the first bracket (4), and hooks (53) that are engaged with the buckles (43) are provided on both sides of the second bracket (5).

4. The mounting structure of the combined light guide according to claim 3, characterized in that: The first bracket (4) is provided with three first screw holes (44), and the first screw holes (44) are used for fixedly connecting the first bracket (4) and the second bracket (5).

5. The mounting structure of the combined light guide according to claim 1, characterized in that: The third bracket (6) is provided with three second screw holes (62), the three second screw holes (62) are distributed on the third bracket (6) in a triangular shape, and the second screw holes (62) are used for fixing the third bracket (6) to the second bracket (5).

6. The mounting structure of the combined light guide according to claim 1, characterized in that: The third bracket (6) is provided with three third screw holes (63), which are distributed on the third bracket (6) in a triangular shape, and the third screw holes (63) are used to fix the third bracket (6) to the lamp housing (8); the PCB board (7) is fixedly arranged on the lamp housing (8).

7. The mounting structure of the combined light guide according to claim 1, characterized in that: The first bracket (4) is a white non-transparent part, and the second bracket (5) is a black non-transparent part.

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