CN217785018U

CN217785018U - LED module for vehicle

Info

Publication number: CN217785018U
Application number: CN202222244397.1U
Authority: CN
Inventors: 杨景
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-11-11
Anticipated expiration: 2032-08-25

Abstract

The utility model discloses a vehicle LED module, which comprises a metal plane bracket and a FPC (flexible printed circuit) circuit board fixed on the surface of the metal plane bracket; the FPC circuit board comprises a plurality of fixing plates for mounting the LED light sources, a first bending area is arranged between the fixing plates and adjacent parts in the FP C circuit board, and the first bending area is not in contact with the metal plane support, so that each fixing plate can be bent at a certain angle. The utility model discloses paste the FPC circuit board on metal plane support, compare with the plastic support, the support radiating efficiency of metal material is higher, also can satisfy the support intensity, need not increase heat dissipation reinforcement structure, can not lead to the FPC circuit board fracture because of the FPC circuit board is poor with the stress of metal plane support when bending simultaneously, structural strength has both been guaranteed, structural shape and heat dissipation requirement have been satisfied again, can be used to high-power light source and give out light, realize rich and varied pointolite effect, the light type design of lines effect and face etc.

Description

LED module for vehicle

Technical Field

The utility model relates to a signal lamp module technical field especially relates to an automobile-used LED module.

Background

At present, a large number of circuit boards made of FPC materials are used as carriers of light sources on lamp panels of automobile LED signal lamp modules. The application range of the structure is that under the condition of a non-plane surface needing to be bent, colorful point light source effects, line effects, planar light type designs and the like are designed.

The structure of the current LED lamp panel comprises an LED, an FPC circuit board, heat dissipation aluminum reinforcement (plane or three-dimensional aluminum reinforcement), a connector, part of other electronic components and the like.

The structure of the automobile LED module in the prior art comprises main parts such as an LED lamp panel, a plastic support or an aluminum support, a wire harness, a reflecting component (a reflecting bowl, a lens and the like) and the like.

In the prior art CN203641940U, a process of attaching a circuit board on an aluminum substrate is disclosed, but the circuit board in this patent is of a planar structure, and in the case of a non-planar surface that needs to be bent, if the circuit board is attached in the above manner, because the aluminum substrate and the flexible circuit board are subjected to different stresses, during bending, a fracture phenomenon occurs in the bending region of the circuit board and the aluminum substrate at the same time, and thus the circuit board cannot be used for mounting the circuit board with bending.

In fig. 1, a plastic bracket 8 is used for fixing the FPC board 2, and structural components which are not related to the patent contents, such as a peripheral light reflecting or lens assembly and a base of a car lamp housing, are omitted in the figure for clarity of description of the structural components of the existing FPC board. This structure has the following drawbacks: (1) Because the circuit board is inconsistent with the thermal expansion ratio of wiring or copper paving, the FPC circuit board can generate deformation and unevenness in the process of chip mounting at the high temperature of reflow soldering. (2) Because the plastic material heat dissipation is relatively poor, therefore only be used for miniwatt LED light source 3, when the automobile-used module lamp plate is high-power (1w, 3w even 5 w) single LED, need add aluminium reinforcement 9 at single LED back, strengthen the heat dissipation, consider support cost and space factor, aluminium reinforcement 9 can't be covered with whole back, and the radiating efficiency is still lower. (3) The plastic support 8 is fixed with the FPC 2 through a hot riveting process, and hidden troubles such as breaking the plastic support or breaking wiring inside the circuit board in the hot riveting process exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the signal lamp module among the prior art and adopt plastic support installation FPC circuit board, the radiating efficiency is low, and produces warpage's technical problem easily at FPC circuit board iron sheet in-process, the utility model provides an automobile-used LED module solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: a vehicle LED module comprises a metal plane support and an FPC (flexible printed circuit) circuit board fixed on the surface of the metal plane support; the FPC circuit board contains the fixed plate of a plurality of installation LED light sources, have first bending district between the adjacent part in fixed plate and the FPC circuit board, first bending district with metal plane support contactless, so that every the fixed plate can bend certain angle respectively.

Furthermore, each fixing plate can be respectively bent to form platforms which are parallel to each other and have different heights.

Furthermore, the metal plane support is made of aluminum materials, and a fixing screw hole connected with an external structure is formed in the metal plane support.

Furthermore, the metal plane support located right below the first bending area is a hollow-out area.

The FPC is characterized by further comprising an annular milling groove arranged at the outer edge of the FPC, the annular milling groove divides the metal plane support into an inner support and an outer support, the FPC is arranged on the inner support, and a plurality of board dividing ribs connected with the inner support and the outer support are arranged in the annular milling groove.

Furthermore, the metal plane support is pasted with two or more than two FPC circuit boards, and the annular milling grooves are arranged in one-to-one correspondence with the FPC circuit boards.

Furthermore, the surface of the metal plane support is provided with a positioning hole, and the FPC circuit board is provided with a through hole corresponding to the positioning hole.

Furthermore, the FPC circuit board is fixed with the metal plane support through thermosetting adhesive.

Furthermore, the fixed plates are linearly and sequentially arranged, and the first bending area is positioned between two adjacent fixed plates.

Furthermore, the FPC circuit board includes the base plate, the fixed plate is located the base plate edge, and first bending region is located between base plate and the fixed plate.

The beneficial effects of the utility model are that:

(1) Automobile-used LED module, paste the FPC circuit board on metal plane support, compare with plastic support, the support radiating efficiency of metal material is higher, also can satisfy support intensity, need not increase heat dissipation reinforcement structure, set up the first district of bending of discontacting with metal plane support on the FPC circuit board simultaneously, the fixed plate that makes installation LED light source can buckle, and can not lead to the FPC circuit board fracture because of the FPC circuit board with metal plane support's stress difference when bending, structural strength has both been guaranteed, structural shape and heat dissipation requirement have been satisfied again, can be used to high-power light source and give out light, realize rich and colorful pointolite effect, the light type design etc. of lines effect and face.

(2) Automobile-used LED module, the FPC circuit board passes through the thermosetting glue and fixes with metal plane support, rivet fixedly with the heat among the prior art and compare, the operation is simpler, can not appear pressing disconnected metal plane support or pressing disconnected circuit board inside phenomenon such as walking the line.

(3) Automobile-used LED module, can fix two or more than two FPC circuit boards at same metal plane support to together divide the board with the FPC circuit board and the inside support that corresponds through annular milling flutes, improve production efficiency, reduce the waste material rate.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic diagram of a prior art LED module for a vehicle;

fig. 2 is a schematic view of a metal plane bracket according to a first embodiment of the present invention;

fig. 3 is a schematic view of a composite assembly before bending according to an embodiment of the LED module for a vehicle of the present invention;

fig. 4 is a diagram of a finished product after bending of the embodiment of the automotive LED module according to the present invention;

fig. 5 is a schematic view of a metal plane bracket according to a second embodiment of the LED module for a vehicle of the present invention;

fig. 6 is a schematic diagram of an FPC board in a second embodiment of the vehicle LED module according to the present invention;

fig. 7 is a schematic view of a composite assembly before bending according to an embodiment of the LED module for a vehicle of the present invention;

fig. 8 is a diagram of a finished product after bending according to the embodiment of the LED module for vehicle of the present invention.

In the figure, 1, a metal plane support, 101, a hollowed-out area, 102, a positioning hole, 103, a fixing screw hole, 104, an internal support, 105, an external support, 106, a second bending area, 2, an FPC (flexible printed circuit) board, 201, a fixing plate, 202, a first bending area, 203, a substrate, 3, an LED light source, 4, an annular milling groove, 5, a plate dividing rib, 6, a three-dimensional support, 7, a component, 8, a plastic support, 9 and aluminum reinforcement.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

An LED module for a vehicle comprises a metal plane support 1 and an FPC (flexible printed circuit) board 2 fixed on the surface of the metal plane support 1; the FPC board 2 comprises a plurality of fixing plates 201 for mounting the LED light sources 3, a first bending area 202 is arranged between the fixing plates 201 and adjacent parts in the FPC board 2, and the first bending area 202 is not in contact with the metal plane support 1, so that each fixing plate 201 can be bent to form a certain angle.

The FPC board 2 is a flexible circuit board, the LED light source 3 and other electrical components are mounted on the FPC board 2, and a wiring harness is arranged inside the FPC board. Metal planar support 1, as the name implies, be the support of the plane shape of making for the metal material, FPC circuit board 2 is laid on metal planar support 1, metal planar support 1 provides the intensity for FPC circuit board 2 and supports, and metal planar support 1's high heat dispersion can disperse the heat that LED light source 3 sent fast, avoid LED light source 3 and other electrical components to damage because of the heat is too high, can be used for high-power LED light source 3 to give out light, when fixed plate 201 bends, metal planar support 1 also is called spatial structure by bending. Fixed plate 201 is bent along the edge of first district 202 of bending, because bend position and metal plane support 1 contactless, FPC circuit board 2 can not receive dragging of metal plane support 1 when bending, consequently the phenomenon of splitting can not appear, the design demand of non-planar LED module has been satisfied, through arranging each fixed plate 201 (being LED light source 3) at different heights, make the LED module produce rich and varied pointolite effect, the light type design of lines effect and face.

Preferably, the metal plane support 1 is made of aluminum, and may be replaced by other metal plate or non-metal plate with good heat dissipation, good flexibility and easy bending.

The metal plane support 1 located under the first bending area 202 is a hollow-out area 101, the first bending area 202 is not in contact with the metal plane support 1 through hollow-out design, and during bending, the metal plane support 1 where the first bending area 202 is located does not have plate deformation, and therefore the metal plane support is not pulled by stress completely.

The utility model discloses well FPC circuit board 2 is preferred to be glued through the thermosetting and is fixed with metal plane support 1, can not press the pencil in disconnected FPC circuit board 2 like this.

The surface of the metal plane bracket 1 is provided with a positioning hole 102, and the FPC circuit board 2 is provided with a through hole corresponding to the positioning hole 102.

The metal plane support 1 is provided with a fixing screw hole 103 connected with an external structure, and the fixing screw hole 103 is arranged at a certain distance from the FPC circuit board 2, so that the FPC circuit board 2 is prevented from being scalded. The utility model discloses a metal planar support 1 simple structure, occupation space is little, so metal planar support 1's plane size can slightly be greater than FPC circuit board 2's plane size, and fixed screw hole 103 is located the region of not laying FPC circuit board 2 on the metal planar support 1 to be provided with a plurality ofly along the periphery of FPC circuit board 2, press disconnected FPC circuit board 2 when both can avoiding fixing, also can improve fixed effect.

Can only fix a FPC circuit board 2 on same metal plane support 1, also can fix a plurality of FPC circuit boards 2, when fixing a plurality of FPC circuit boards 2, can improve the utilization ratio of metal sheet, reduce the waste material volume.

The specific processing steps are as follows: s1: firstly, designing an FPC (flexible printed circuit) drawing of a vehicle module with complete functions, and manufacturing an FPC circuit board 2 meeting requirements according to the drawing; s2: designing a support flattening drawing which meets the structure, and stamping, cutting and manufacturing a metal plane support 1 which meets the requirements according to the drawing; s3: the FPC board 2 is attached to the metal plane support 1 by thermosetting adhesive so that the metal plane support 1 is attached and corresponds to the positioning hole 102 (in fig. 3 and 7), thereby forming an assembly composite board of the metal plane support 1 and the FPC board 2. S4: and brushing solder paste on the finished assembly composite board, attaching the component 7 to the assembly composite board, and completing welding at high temperature. S5: after the function test, milling off the plate dividing ribs 5 can divide the spliced metal plane support 1 into independent plane module parts. S6: the metal plane support 1 is shaped according to the designed first bending area 202, so that the LED light source 3 can reach the expected light emitting direction and position. Finally, forming a complete finished product of the inner module of the automobile lamp, and further assembling the automobile lamp.

Example one

An LED module for a vehicle comprises a metal plane support 1 and an FPC (flexible printed circuit) board 2 fixed on the surface of the metal plane support 1; the FPC board 2 comprises a plurality of fixing plates 201 for mounting the LED light sources 3, a first bending area 202 is arranged between the fixing plates 201 and adjacent components in the FPC board 2, and the first bending area 202 is not in contact with the metal plane support 1, so that each fixing plate 201 can be bent respectively to form platforms which are parallel to each other and have different heights.

The LED module for the vehicle further comprises an annular milling groove 4 positioned at the outer edge of the FPC (flexible printed circuit) board 2, the annular milling groove 4 divides the metal plane support 1 into an inner support 104 and an outer support 105, the FPC board 2 is positioned on the inner support 104, when a plurality of FPC boards 2 are arranged at the same time, the number of the inner supports 104 corresponds to that of the FPC boards 2, only one outer support 105 is arranged, and a plurality of board dividing ribs 5 for connecting the inner supports 104 and the outer supports 105 are arranged in the annular milling groove 4. The annular milling groove 4 is approximately arranged along the outer edge of the FPC circuit board 2 (the first bending area 202 is located below the FPC circuit board 2), the annular milling groove 4 is a hollow groove processed on the metal plane support 1 by a milling machine, the board dividing rib 5 is used for connecting the inner support 104 with the outer support 105, and after the FPC circuit board 2 and the metal plane support 1 are installed and completed, the board dividing rib 5 is cut off to separate the inner support 104 from the outer support 105, so that board division is realized.

In this embodiment, the metal planar support 1 is a square aluminum planar frame, as shown in fig. 2 and 3, two FPC boards 2 may be adhered to the metal planar support 1, each FPC board 2 has a ring-shaped milled groove 4 on the periphery thereof, the metal planar support 1 is divided into two inner supports 104 and one outer support 105, each FPC board 2 is composed of six fixing plates 201 and five first bending regions 202, the six fixing plates 201 are linearly and sequentially arranged, the first bending regions 202 are located between two adjacent fixing plates 201, the fixing plates 201 are bent to form a step-shaped step structure, and the metal planar support 1 forms a three-dimensional support 6, as shown in fig. 4, the three-dimensional support 6 has a hollow-out region 101 below the first bending region 202, and second bending regions 106 are formed on two sides of the hollow-out region 101, when the first bending region 202 is bent, the second bending regions 106 are also bent together, and after bending, the first bending regions 202 and the second bending regions 106 are parallel to each other and do not overlap with each other. The final bent module is a complete finished vehicle lamp inner module as shown in fig. 5.

Example two

As shown in fig. 5-7, two FPC boards 2 are attached to a metal planar support 1, each FPC board 2 has a circular milled slot 4 on the periphery thereof to divide the metal planar support 1 into two inner supports 104 and an outer support 105, each FPC board 2 is composed of a substrate 203, five fixing plates 201 and four first bending regions 202, the fixing plates 201 are located on the edges of the substrate 203, the first bending regions 202 are located between the substrate 203 and the fixing plates 201, the metal planar support 1 forms a three-dimensional support 6 after the fixing plates 201 are bent, as shown in fig. 8, the three-dimensional support 6 forms a hollow region 101 below the first bending regions 202, and a second bending region 106 is located on one side of the hollow region 101, when the first bending regions 202 are bent, the second bending regions 106 are also bent together, and after bending, the first bending regions 202 and the second bending regions 106 are parallel and do not overlap with each other.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a vehicle LED module which characterized in that: comprises a metal plane bracket (1) and an FPC (flexible printed circuit) board (2) fixed on the surface of the metal plane bracket (1);

the FPC circuit board (2) contains fixed plate (201) of a plurality of installation LED light sources (3), have first bending region (202) between adjacent part in fixed plate (201) and FPC circuit board (2), first bending region (202) with metal plane support (1) contactless, so that every fixed plate (201) can bend certain angle respectively.

2. The vehicular LED module according to claim 1, wherein: each fixing plate (201) can be respectively bent to form platforms which are parallel to each other and have different heights.

3. The vehicular LED module according to claim 1, wherein: the metal plane support (1) positioned right below the first bending area (202) is a hollow-out area (101).

4. The vehicular LED module according to claim 3, wherein: the metal plane support (1) is made of aluminum materials, and a fixing screw hole (103) connected with an external structure is formed in the metal plane support (1).

5. The vehicular LED module according to claim 1, wherein: still including being located annular milling flutes (4) of FPC circuit board (2) outer fringe, annular milling flutes (4) will metal plane support (1) is separated for inside support (104) and outside support (105), FPC circuit board (2) are located inside support (104), have branch board muscle (5) of a plurality of inside supports of connection (104) and outside support (105) in annular milling flutes (4).

6. The vehicular LED module according to claim 5, wherein: the metal plane support (1) is pasted with two or more FPC circuit boards (2), and the annular milling grooves (4) are arranged in one-to-one correspondence with the FPC circuit boards (2).

7. The vehicular LED module according to claim 1, wherein: the surface of the metal plane support (1) is provided with a positioning hole (102), and the FPC circuit board (2) is provided with a through hole corresponding to the positioning hole (102).

8. The vehicular LED module according to claim 1, wherein: the FPC circuit board (2) is fixed with the metal plane support (1) through thermosetting adhesive.

9. The vehicular LED module according to any one of claims 2 to 8, wherein: the fixing plates (201) are arranged in sequence in a straight line, and the first bending area (202) is located between every two adjacent fixing plates (201).

10. The vehicular LED module according to any one of claims 2 to 8, wherein: the FPC (2) comprises a substrate (203), the fixing plate (201) is located on the edge of the substrate (203), and the first bending area (202) is located between the substrate (203) and the fixing plate (201).