Experimental PCB (printed circuit board) of LED (light-emitting diode) product

Abstract

The invention belongs to the technical field of LEDs, and particularly relates to an experimental PCB of an LED product. Comprising a substrate, and the substrate is provided with a test area, an installation area and a positioning area. The mounting area is in a plane shape and used for being matched with the whole-piece type LED support, a plurality of LED connecting positions which are regularly arranged are arranged in the mounting area, and when the whole-piece type LED support is mounted on the substrate, single LED lamps on the LED support correspond to the LED connecting positions one to one. The positioning area is located on the outer side of the installation area and used for positioning and installing a whole-piece type LED support, and the testing area is located on the outer side of the installation area and communicated with the LED connecting position. A traditional installation mode of a single lamp bead is changed, and efficiency and installation stability are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of LEDs, and in particular relates to an experimental PCB board of LED products. Background Art

[0002] When conducting high and low temperature thermal shock reliability tests on current SMD LED bracket products, the entire LED bracket after sealing is stripped into single LED lamp beads, and then subjected to spectral screening and taping. The single LED lamp bead is then mounted on the corresponding experimental PCB board by a placement machine, and then placed in the corresponding test box for high and low temperature thermal shock test verification. In this traditional PCB board, its single LED lamp beads need to be installed one by one, resulting in low efficiency. Moreover, after installation, since each LED lamp bead is installed separately, it is easy to become loose due to bumps during transportation or testing, thereby affecting the connection and ultimately the test results. In addition, during testing, only a defective LED lamp bead can be found, but the LED bracket in the previous process cannot be traced, resulting in the inability to make timely adjustments based on the defective results, and it is difficult to control the defective rate. Summary of the invention

[0003] The purpose of the present invention is to provide an experimental PCB board for LED products, which changes the traditional installation method of a single lamp bead and greatly improves the efficiency and installation stability.

[0004] Based on this, the present invention provides an experimental PCB board for LED products, including a substrate, on which a test area, a mounting area and a positioning area are provided; The installation area is planar and is used to fit the whole-piece LED bracket. A number of regularly arranged LED connection positions are provided in the installation area. When the whole-piece LED bracket is installed on the substrate, the single LED lamp on the LED bracket corresponds to the LED connection position one by one. The positioning area is located outside the installation area and is used for positioning and installing the whole piece LED bracket. The testing area is located outside the installation area and is connected to the LED connection position.

[0005] In the experimental PCB board of an LED product as described above, the installation area is rectangular and matches the area on the LED bracket where the LED lamp is arranged.

[0006] In the experimental PCB board of an LED product as described above, a plurality of the LED connection positions form a plurality of parallel spaced strip connection areas, and the strip connection areas are formed by a plurality of the LED connection positions being arranged vertically in the longitudinal direction.

[0007] In the above-mentioned experimental PCB board of an LED product, the test area includes a plurality of groups of test connection positions, and the plurality of groups of test connection positions are respectively connected to the plurality of strip-shaped connection areas in a one-to-one correspondence.

[0008] The experimental PCB board of an LED product as described above, wherein a single LED connection position comprises a first connection pin, a second connection pin, a third connection pin and a fourth connection pin; Among the multiple LED connection positions on the single strip-shaped connection area, the first connection pins on each LED connection position are interconnected and conductive, the second connection pins on each LED connection position are interconnected and conductive, the third connection pins on each LED connection position are interconnected and conductive, and the fourth connection pins on each LED connection position are interconnected and conductive.

[0009] In the above-mentioned experimental PCB board of an LED product, the single group of test connection points includes a first test connection point, a second test connection point and a third test connection point; The first test connection point of a single group of test connection positions is connected to the first connection pin on the corresponding strip connection area, the second test connection point is connected to the second connection pin, and the third test connection point is connected to the third connection pin.

[0010] In the experimental PCB board of an LED product as described above, the substrate is also provided with a connection bus, which is arranged along the periphery of the installation area, and the fourth connection pin on each of the strip-shaped connection areas is conductively connected to the connection bus.

[0011] In the experimental PCB board of an LED product as described above, the width of the mounting area is 60-90 mm, and the length of the mounting area is 145-170 mm.

[0012] In the experimental PCB board of an LED product as described above, the positioning area includes a plurality of positioning structures located between the test area and the installation area.

[0013] In the experimental PCB board of an LED product as described above, the substrate is rectangular as a whole, and positioning and mounting holes are provided on four sides of the substrate.

[0014] Implementing the embodiments of the present invention has the following beneficial effects: 1. The present invention provides an experimental PCB board for LED products, which can be installed with a whole LED bracket, and after installation, the installation area is connected to each LED lamp bead on the LED bracket one by one. After installation, the reliability test can be carried out through the test area, making the overall installation efficiency higher, and changing the way that the traditional LED bracket needs to disassemble the lamp beads, retaining the entire LED bracket, so that after the test, the source can be traced according to the information recorded in the LED bracket, and the accuracy of the reliability abnormality source tracing of the product is improved. It is convenient to make targeted improvements to the abnormalities, quickly improve product quality, and effectively improve the defective rate.

[0015] 2. The present invention adopts the installation of a whole-piece LED bracket, which greatly improves the installation efficiency compared to the installation of a single LED lamp bead, and has better overall stability, avoiding loose connections caused by bumps, and making the test results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the experimental PCB board of the present invention; Figure 2 for Figure 1 A magnified view of part A; Figure 3 for Figure 1 A magnified view of part B; Figure 4 This is a schematic diagram of the LED bracket structure; Figure 5 for Figure 4 Enlarged view of part C; Figure 6 This is a schematic diagram of a single LED lamp bead on an LED bracket. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 6 As shown, an embodiment of the present invention provides an experimental PCB board for an LED product, including a substrate 1, on which a test area 11, an installation area 12 and a positioning area 13 are provided; the installation area is used to dock with the LED bracket 9 and to connect with the LED lamp beads on the LED bracket 9 to facilitate the inspection of a single LED lamp bead in subsequent test experiments, and the positioning area 13 ensures the alignment of the LED bracket 9 during installation to facilitate stability after installation.

[0020] In this solution, the installation area 12 is in a planar shape, which is used to adapt to the whole piece LED bracket 9, and a number of regularly arranged LED connection positions 120 are provided in the installation area, and when the whole piece LED bracket 9 is installed on the substrate 1, the single LED lamp on the LED bracket 9 corresponds to the LED connection position 120 one by one; the positioning area 13 is located outside the installation area 12, which is used to position and install the whole piece LED bracket 9, and the test area 11 is located outside the installation area 12, and is connected to the LED connection position 120. It can be installed with the whole piece LED bracket, and after installation, the installation area is connected to each LED lamp bead on the LED bracket one by one. After installation, reliability testing can be carried out through the test area, making the overall installation efficiency higher, and changing the way that the traditional LED bracket needs to disassemble the lamp beads, retaining the entire LED bracket, so that after the test, the source can be traced according to the information recorded in the LED bracket, and the accuracy of tracing the source of product reliability abnormalities is improved. It is convenient to make targeted improvements to abnormalities, quickly improve product quality, and effectively improve the defective rate.

[0021] Traditional hot and cold shock test boards for LED products all peel off the entire LED bracket after packaging into single lamp beads, and then shuffle the lamp beads through the process of splitting and stirring, weave them into rolls, and then pass through the SMT placement machine to mount them on the corresponding experimental PCB board for reliability test verification. From the entire LED bracket to the LED lamp beads mounted on the PCB test board, there are multiple processes such as splitting and stirring in the middle. When an abnormality occurs in the experiment, it is impossible to trace the source of the abnormality, which is not conducive to accurately improving the abnormality. Compared with the traditional installation method of a single LED lamp bead, this solution retains the entire LED bracket and the corresponding information on the LED bracket. Therefore, when the lamp bead on the single LED bracket fails, the information can be traced back to the production source in the previous process, so that the corresponding parameters can be adjusted in time, effectively improving the yield rate.

[0022] In the embodiment of the present invention, as a preferred embodiment, the LED bracket is directly mounted on the substrate 1. Compared with the installation of a single LED lamp bead, not only the installation efficiency is greatly improved, but the LED lamp bead and the entire bracket are attached to the PCB board, which increases the adhesion between the LED lamp bead and the PCB board and prevents the single lamp bead from loosening or falling off due to collision. The proportion of experimental misjudgments caused by loosening of the lamp bead due to collision is reduced, the overall stability is better, and the test results are more accurate.

[0023] Of course, the regular arrangement of the LED connection positions 120 in the present solution can be arranged according to a certain design trajectory, such as a conventional straight line or matrix type, or can be arranged in a certain trajectory shape, such as an arc or a ring, which at least covers every LED lamp bead on the LED bracket. Preferably, it corresponds one-to-one with each lamp bead on the LED bracket.

[0024] Specifically, in the embodiment of the present invention, the installation area 12 is rectangular and matches the area where the LED lamp is arranged on the LED bracket 9. It has a simple structure and is easy to adapt to the installation of the LED bracket.

[0025] In the embodiment of the present invention, the specific structure of the installation area 12 is formed by a plurality of the LED connection positions 120, and the plurality of the LED connection positions 120 form a plurality of parallel and spaced strip connection areas, and the strip connection area is formed by a plurality of the LED connection positions 120 arranged vertically in the longitudinal direction. That is, a single LED connection position 120 is connected to a single LED lamp bead, and the single LED connection position 120 is arranged vertically to form a strip connection area, and then a plurality of parallel and spaced strip connection areas are formed to form a sheet area, so as to adapt to the sheet area formed after a plurality of LED lamp beads of a conventional LED bracket are generated. In this way, when mounting, it is only necessary to mount through the corresponding sheet area, so that each LED lamp bead is connected one by one with the corresponding LED connection position. This makes installation simpler and improves installation efficiency.

[0026] Furthermore, in the solution of the present invention, the test area 11 includes multiple groups of test connection positions, and the multiple groups of test connection positions are connected to the multiple strip-shaped connection areas one by one. The main function of the test area 11 is to light up the corresponding LED lamp beads by connecting the corresponding positions of the test area 11 when testing the experimental equipment.

[0027] Taking the traditional three-color lamp bead as an example, the lamp bead has three bright colors of RGB. In order to adapt to its experiment, the single LED connection position 120 of this scheme includes a first connection pin 121, a second connection pin 122, a third connection pin 123 and a fourth connection pin 124; it can be understood that each connection pin is a corresponding connection end, for example, the first connection pin 121 is the red positive connection end, that is, the R end, similarly, the second connection pin 122 is the G end, the third connection pin 123 is the B end, and the fourth connection pin 124 can be a common negative end.

[0028] In the present solution, in order to facilitate conduction, among the multiple LED connection positions 120 on the single strip-shaped connection area, the first connection pins 121 on each LED connection position 120 are interconnected and conducted, the second connection pins 122 on each LED connection position 120 are interconnected and conducted, the third connection pins 123 on each LED connection position 120 are interconnected and conducted, and the fourth connection pins 124 on each LED connection position 120 are interconnected and conducted.

[0029] In addition, the single group of test connection points includes a first test connection point 111, a second test connection point 112 and a third test connection point 113; which are connected to the R terminal, the G terminal and the B terminal, specifically , the first test connection point 111 of the single group of test connection positions is connected to the first connection pin 121 on the corresponding strip connection area, the second test connection point 112 is connected to the second connection pin 122, and the third test connection point 113 is connected to the third connection pin 123. In this way, through the above structure, during the test, only the first test connection point of the test area 11 is needed to make the multiple LED lamp beads on the single strip arrangement light up red. Similarly, through the arrangement of this solution, the multiple first test connection points on the test connection position are connected to the signal, so that the lamp beads on the entire LED bracket light up red, so as to perform the corresponding test, making the test process faster.

[0030] Moreover, in this solution, the substrate 1 is also provided with a connection bus 19, and the connection bus 19 is arranged along the periphery of the installation area 12, and the fourth connection pin 124 on each of the strip-shaped connection areas is connected to the connection bus 19. It makes the overall wiring more compact, which is conducive to reducing the overall size. In this embodiment, the substrate 1 is a rectangle as a whole, and its overall size can be designed to be less than 100 mm in width and less than 170 mm in length. The width of the installation area 12 is 60~90 mm, and the length of the installation area 12 is 145~170 mm. As one of the preferred embodiments, its dimensions can be: the width of the substrate 1 is 90.1 mm, the length is 162 mm, the width of the installation area 12 is 75 mm, and the length is 154 mm. Its layout design makes full use of the space and makes the overall volume of the product smaller.

[0031] Of course, the substrate of this solution is a PCB board, and the above-mentioned connection positions and buses are formed on the substrate in a printing manner to achieve the above-mentioned corresponding conduction implementation method.

[0032] In an embodiment of the present invention, the positioning area 13 and the LED bracket are pre-positioned and installed before mounting, so that the position is more accurate and the displacement before mounting and fixing is reduced, so as to prevent the displacement from causing the connection failure of the LED lamp beads. The positioning area 13 includes a plurality of positioning structures located between the test area 11 and the installation area 12. Specifically, the positioning structure of this scheme can be provided in the through hole of the positioning area 13, and the above-mentioned positioning installation can be performed by providing a corresponding convex structure on the LED bracket, such as providing a convex column. Of course, a convex column can also be provided on the positioning area, in which case it is only necessary to provide a corresponding through hole on the LED bracket. As a preference but not limitation, this scheme at least provides a plurality of positioning structures along the length direction of the installation area 12. Of course, a plurality of positioning structures can also be arranged on the periphery of the entire installation area 12 to ensure an effective pre-positioning effect after installation.

[0033] In the embodiment of the present invention, the substrate 1 is rectangular as a whole, and positioning and mounting holes 101 are provided on four sides of the substrate 1. The positioning and mounting holes 101 are convenient for the substrate 1 to be used as a carrier for positioning and mounting during testing experiments or when it is fixed to the LED bracket through a furnace.

[0034] The present invention provides an experimental PCB board for LED products, which can be installed with a whole LED bracket, and after installation, the installation area is connected to each LED lamp bead on the LED bracket one by one. After installation, the reliability test can be carried out through the test area, so that the overall installation efficiency is higher, and the traditional LED bracket needs to disassemble the lamp beads, and the whole LED bracket is retained, so that after the test, the source can be traced according to the information recorded in the LED bracket, and the accuracy of the abnormal source tracing of the reliability of the product is improved. It is convenient to make targeted improvements to the abnormalities, quickly improve the product quality, and effectively improve the defective rate.

[0035] It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information. In addition, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An experimental PCB board for LED products, characterized in that: It comprises a substrate (1), wherein the substrate (1) is provided with a testing area (11), a mounting area (12) and a positioning area (13); The installation area (12) is planar and is used to fit the integral LED bracket (9), and a plurality of regularly arranged LED connection positions (120) are provided in the installation area, and when the integral LED bracket (9) is installed on the substrate (1), the single LED lamp on the LED bracket (9) corresponds one-to-one to the LED connection position (120); The positioning area (13) is located outside the installation area (12) and is used for positioning and installing a whole-piece LED bracket (9); the testing area (11) is located outside the installation area (12) and is electrically connected to the LED connection position (120).

2. The experimental PCB board of an LED product according to claim 1, characterized in that: The installation area (12) is rectangular in shape and matches the area on the LED bracket (9) where the LED lamp is arranged.

3. The experimental PCB board of an LED product according to claim 2, characterized in that: A plurality of the LED connection positions (120) form a plurality of parallel spaced strip-shaped connection areas, and the strip-shaped connection areas are formed by a plurality of the LED connection positions (120) being arranged vertically in the longitudinal direction.

4. The experimental PCB board of an LED product according to claim 3, characterized in that: The test area (11) comprises a plurality of groups of test connection bits, and the plurality of groups of test connection bits are respectively connected to the plurality of strip-shaped connection areas in a one-to-one correspondence.

5. The experimental PCB board of an LED product according to claim 4, characterized in that: The single LED connection position (120) comprises a first connection pin (121), a second connection pin (122), a third connection pin (123) and a fourth connection pin (124); Among the multiple LED connection positions (120) on the single strip-shaped connection area, the first connection pins (121) on each LED connection position (120) are interconnected and conductive, the second connection pins (122) on each LED connection position (120) are interconnected and conductive, the third connection pins (123) on each LED connection position (120) are interconnected and conductive, and the fourth connection pins (124) on each LED connection position (120) are interconnected and conductive.

6. The experimental PCB board of an LED product according to claim 5, characterized in that: The single group of test connection points comprises a first test connection point (111), a second test connection point (112) and a third test connection point (113); The first test connection point (111) of the single group of test connection positions is conductively connected to the first connection pin (121) on the corresponding strip connection area, the second test connection point (112) is conductively connected to the second connection pin (122), and the third test connection point (113) is conductively connected to the third connection pin (123).

7. The experimental PCB board of an LED product according to claim 6, characterized in that: The substrate (1) is further provided with a connection bus (19), the connection bus (19) being arranged along the periphery of the mounting area (12), and the fourth connection pin (124) on each of the strip-shaped connection areas is electrically connected to the connection bus (19).

8. An experimental PCB board for LED products according to any one of claims 1 to 7, characterized in that: The width of the installation area (12) is 60-90 mm, and the length of the installation area (12) is 145-170 mm.

9. An experimental PCB board for LED products according to any one of claims 1 to 7, characterized in that: The positioning area (13) comprises a plurality of positioning structures located between the test area (11) and the installation area (12).

10. An experimental PCB board for LED products according to any one of claims 1 to 7, characterized in that: The base plate (1) is rectangular as a whole, and positioning and mounting holes (101) are provided on four sides of the base plate (1).

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