A LED light board test needle bed

Abstract

The present invention relates to the field of circuit board detection, and relates to a needle bed for testing LED light boards, comprising: a collection unit and a needle holder; a contoured fixing platform, mounted on the top of the collection unit; a tightening plate, which is composed of thin rods of equal length piled together and embedded in the needle holder with the rods in a vertical state; rotary push syringes, evenly spaced on the needle holder; a hose, which passes through the needle holder and is embedded in the tightening plate; the hose is connected to the rotary push syringe in series through a connecting tube, and liquid in the rotary push syringe is injected into the hose to make the hose bulge, thereby squeezing the rod in the tightening plate; and a plug-in probe, which is movably inserted into the tightening plate. The present invention can fix the plug-in probe at any position on the needle holder through the tightening plate in combination with the plug-in probe, and can quickly adjust the probe of the needle holder when testing different light boards, making it easier and faster to redesign the needle holder.

Description

Technical Field

[0001] The invention relates to the field of circuit board detection, and in particular to an LED light board test needle bed. Background Art

[0002] LED light board is to install multiple lamp beads on a circuit board of fixed shape. After the LED light board is produced, it needs to be tested for connectivity of the circuit board through a test needle bed before it is put into use. The purpose of the test is to detect whether the internal circuits on the circuit board are connected, which determines whether the lamp beads on the circuit board can light up after power is turned on. Therefore, in order to facilitate the test, during the production of the light board, multiple test points with exposed copper plating will be reserved on the surface of the circuit board. These test points are used for the needle bed test; the basic process of the test is to place the light board to be tested on the test bench, and then the needle holder with the test probe presses the light board, and then the linear drive pushes the needle holder from top to bottom to make the probe against the test point for detection, and the test result is displayed on the terminal; and during this test process, the test points on the light board are fixed, so after replacing light boards of different specifications or sizes, the corresponding test points will also change, which leads to the need to design corresponding needle beds when testing light boards of different sizes. The position of the probe on the new needle bed needs to be arranged according to the test points on the new light board. In this process, the number of probes may need to be increased or reduced, and the position of the probes may be adjusted adaptively, resulting in a cumbersome design process for the new needle bed. Summary of the invention

[0003] The present invention aims to solve the technical problems existing in the above-mentioned prior art. To this end, the present invention provides an LED light board test needle bed.

[0004] To achieve the above-mentioned purpose, the present invention provides such an LED light board test needle bed, comprising: a collection unit and a needle holder; a contoured fixing platform, installed on the top of the collection unit; a tightening plate, which is composed of thin rods of equal length stacked and gathered together, and is embedded in the needle holder with the rods in a vertical state; rotary push syringes, evenly spaced on the needle holder; a hose, which passes through the needle holder and is embedded in the tightening plate; the hose is connected to the rotary push syringe in series through a connecting tube, and liquid in the rotary push syringe is injected into the hose and causes the hose to bulge, thereby squeezing the rod in the tightening plate; a plug-in probe, which is movably inserted into the tightening plate; a top cover plate, installed on the top of the needle holder and covering the rotary push syringe; the plug-in probe comprises: a cross rod, whose surface is a rough surface, which is movably inserted into the tightening plate; a mounting groove, arranged at the bottom of the cross rod; a connecting line, connected to the side wall of the mounting groove; a telescopic probe, embedded in the mounting groove.

[0005] As a further improvement of the scheme, a square inner groove is provided in the center of the surface of the profiling fixing platform, and external hexagonal telescopic rods are tightly arranged in the inner groove. Clamps are symmetrically and movably installed on both sides of the inner groove of the profiling fixing platform, and screws are spirally penetrated on both sides of the profiling fixing platform, and the screws are rotatably connected to the clamps.

[0006] As a further improvement of the solution, the plug-in probe also includes: an expansion disc, which is added between the cross rod and the mounting groove, and the length of the cross rod is consistent with the thickness of the tightening plate; the end face of the top end of the cross rod is an inclined end face.

[0007] As a further improvement of the solution, it also includes: a pre-positioning plate installed at the bottom of the needle holder; the pre-positioning plate is provided with a limiting hole for accommodating the passage of the telescopic probe.

[0008] As a further improvement of the solution, it also includes: a positioning rod, which is distributed around the collection unit; a buffer pad, which is movably arranged on the positioning rod; and a positioning sleeve, which is distributed around the needle holder and corresponds to the position of the positioning rod.

[0009] As a further improvement of the scheme, it also includes: a fixed base, on which limit blocks are symmetrically provided for positioning and installing the collection unit; a linear drive unit, which is arranged on the top of the fixed base; a connecting plate, which is fixedly connected to the driving end of the linear drive unit; and the connecting plate is connected to the top cover plate.

[0010] As a further improvement of the scheme, it also includes: strip-shaped transverse grooves, which are opened around the connecting plate; strip-shaped longitudinal grooves, which are opened around the top cover plate; the strip-shaped transverse grooves and the strip-shaped longitudinal grooves are arranged perpendicular to each other; fastening bolts, which pass through the strip-shaped transverse grooves and the strip-shaped longitudinal grooves to connect the connecting plate to the top cover plate; and positioning side protrusions, which are arranged along the edge of the connecting plate and contact the edge of the top cover plate.

[0011] As a further improvement of the scheme, it also includes: a connecting terminal board, which is arranged on the side wall of the needle holder; an external indicator light, which is installed on the outer surface of the linear drive unit; the plug-in probe is connected to the connecting terminal board through the connecting wire, and then the connecting terminal board is connected to the external indicator light through a wire.

[0012] As a further improvement of the solution, it also includes: a light leakage plate covering the external display lamp; the light leakage plate is provided with holes corresponding to the lamp beads of the external display lamp.

[0013] As a further improvement of the solution, the surface of the light leakage plate is covered with a filter film that reduces the brightness of the light.

[0014] The present invention brings at least the following beneficial effects:

[0015] 1. The present invention can fix the plug-in probe at any position on the needle holder by combining the tightening plate with the plug-in probe. When testing different light boards, the needle holder probe can be quickly adjusted to meet the expected usage requirements, making it easier and faster to redesign the needle holder.

[0016] 2. The hexagonal telescopic rod provided on the contoured fixing platform of the present invention can make adaptive changes to light panels of different shapes, that is, by contracting downward to form a groove corresponding to the shape of the light panel, and then clamping the hexagonal telescopic rod with a clamp to keep it fixed, the subsequently placed light panels can all be in a fixed test position.

[0017] 3. During the reciprocating up and down movement of the needle holder, the positioning rod and the positioning sleeve cooperate with each other, so that the needle holder can be in a fixed position each time it moves down, so that the telescopic probe can fall in the specified position every time, and the telescopic probe and the test point can be effectively connected.

[0018] 4. The present invention connects the external display lamp in series to the plug-in probe by connecting the terminal board, so that it can intuitively judge whether the lamp board can light up normally after being powered on; and the light leakage plate and filter film can effectively reduce the illumination intensity after the external display lamp is turned on, avoiding eye fatigue caused by long-term direct viewing of strong light. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a complete schematic diagram of the present invention.

[0020] Figure 2 For the present invention Figure 1 Schematic diagram from another perspective.

[0021] Figure 3 For the present invention Figure 1 The schematic diagram of the fixed base, the linear drive unit and the connecting plate is omitted.

[0022] Figure 4 It is a schematic diagram of the disassembly and separation of the top cover plate and the pre-positioning plate on the needle holder of the present invention.

[0023] Figure 5 It is a partial cross-sectional schematic diagram of the rotary push syringe and the needle holder of the present invention.

[0024] Figure 6 The figure is a schematic diagram of the specific structure of the portable probe of the present invention.

[0025] Figure 7 It is a partial cross-sectional schematic diagram of the contour fixing platform of the present invention.

[0026] Figure 8 It is a schematic diagram of the linear drive unit, connecting plate, external display lamp and light leakage plate of the present invention.

[0027] Fig. 9 It is a schematic diagram of the specific positions of the strip-shaped transverse grooves, strip-shaped longitudinal grooves and fastening bolts of the present invention.

[0028] The corresponding relationship between the reference numerals and the names of the components in the accompanying drawings is as follows:

[0029] 1. Collection unit, 2. Needle holder, 3. Profile fixing table, 4. Clamping plate, 5. Rotary push syringe;

[0030] 51. internal threaded tube, 52. piston, 53. connecting tube;

[0031] 6. hose, 7. plug-in probe, 8. top cover plate, 71. cross rod, 711. oblique end surface, 712. expansion disc, 72. mounting groove, 721. connecting line, 73. telescopic probe;

[0032] 31. Hexagonal telescopic rod, 32. Clamp, 33. Screw;

[0033] 9. Pre-positioning plate, 91. Limiting hole;

[0034] 10. positioning rod, 101. buffer pad, 102. positioning sleeve;

[0035] 11. fixed base, 111. limit block, 12. linear drive unit, 121. drive end, 13. connecting plate;

[0036] 131, strip-shaped transverse groove, 81, strip-shaped longitudinal groove, 132, fastening bolt, 133, positioning edge protrusion;

[0037] 14. Connecting terminal board, 15. External lamp, 151. Lamp beads;

[0038] 16. Light leak board, 300, light board. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] The present invention specifically discloses a LED light board test needle bed, such as Figure 1-Figure 7 As shown, it includes: a collection unit 1 and a needle holder 2, wherein the collection unit 1 is used to provide power to the light board 300 that needs to be tested and detect the power, the light board 300 is placed on the collection unit 1 and cooperates with the needle holder 2 pressed down for testing, and the needle holder 2 needs to be connected to the test terminal when in use; a profiling fixing table 3 is fixedly installed on the top of the collection unit 1, and the function of the profiling fixing table 3 is to adaptively limit the outer edge of the light board 300 placed on the collection unit 1 to ensure that the light board 300 is in a fixed position during the test. Specifically, according to Figure 7 As shown, a square inner groove is provided in the center of the surface of the profiling fixing platform 3, and the outer hexagonal telescopic rods 31 are tightly arranged in the inner groove. The outer surface of the outer hexagonal telescopic rods 31 is a rough surface. The outer hexagonal telescopic rods 31 arranged in a close relationship form a loading platform. When the light board 300 is placed on the top of the outer hexagonal telescopic rods 31, the light board 300 is pressed downward, and the outer hexagonal telescopic rods 31 located below the light board 300 are contracted, so that the table surface of the profiling fixing platform 3 forms a groove corresponding to the shape of the light board 300. In order to maintain the shape of the groove, the profiling The clamping plates 32 are symmetrically slidably installed on both sides of the inner groove of the fixing platform 3, and screws 33 are spirally penetrated on both sides of the contoured fixing platform 3. The screws 33 are rotatably connected to the clamping plates 32. By rotating the screws 33, the clamping plates 32 on both sides are pushed closer to each other, and further the arranged external hexagonal telescopic rods 31 are able to be in close contact with each other through the rough surface of the outer surface, while preventing the contracted part of the external hexagonal telescopic rod 31 from bouncing back to its original position, so as to avoid the groove corresponding to the shape of the lamp board 300 being eliminated due to the resetting of the external hexagonal telescopic rod 31.

[0042] according to Figure 4As shown, a tightening plate 4 is embedded in the needle holder 2. The tightening plate 4 is composed of thin rods of equal length stacked together and embedded in the needle holder 2 with the rods in a vertical state. A plurality of rotary push syringes 5 are evenly fixedly installed on the top of the needle holder 2. The rotary push syringe 5 can make the rod threaded in the internal threaded tube 51 push the piston 52 to move by rotating the internal threaded tube 51 thereon. A hose 6 is evenly distributed on the needle holder 2. The hose 6 passes through the needle holder 2 and is embedded in the tightening plate 4. A plurality of hoses 6 are connected in series through a connecting tube 53 and are connected to the rotary push syringe 5. The rotary push syringes 5 and the connecting tube 53 are all filled with liquid. Therefore, during the pushing process of the rotary push syringe 5, the liquid will be injected into the hose 6 and the hose 6 will bulge. As the hose 6 bulges, the originally loosely arranged rods will be pressed together due to the bulging of the hose 6, so that the rods in the tightening plate 4 are kept in a state of close contact with each other.

[0043] according to Figure 5 and Figure 6 As shown, a plug-in probe 7 is movably inserted into the tightening plate 4, and the plug-in probe 7 is used to make contact and connect with the test point on the lamp board 300; the plug-in probe 7 includes: a cross rod 71 with a rough surface, the cross rod 71 can be movably inserted into any position of the tightening plate 4, and according to the position of the test point on the lamp board 300, when the plug-in probe 7 is installed, the cross rod 71 can be inserted into the tightening plate 4 to keep it fixed, and the length of the cross rod 71 is consistent with the thickness of the tightening plate 4, so that the cross rod 71 can be completely immersed in the tightening plate 4, and the end face of the top of the cross rod 71 is an inclined end face 711, which is conducive to better insertion of the cross rod 71 into the tightening plate 4, and the insertion process will not be hindered. At the same time, the tightening plate 4 is bulged by the hose 6 to The rod bodies in the tightening plate 4 are made to contact each other tightly to clamp the cross rod 71, and the cross rod 71 can be firmly embedded in the tightening plate 4 with the help of the rough surface on its surface. A mounting groove 72 is fixedly provided at the bottom of the cross rod 71, and a connecting line 721 extends from the side wall of the mounting groove 72. A telescopic probe 73 is detachably installed in the mounting groove 72, and an expansion disk 712 is additionally provided between the cross rod 71 and the mounting groove 72. After the cross rod 71 is completely immersed in the tightening plate 4, in order to prevent the cross rod 71 from tilting during use, the expansion disk 712 is pressed against the surface of the tightening plate 4 to prevent the cross rod 71 from tilting during use. A top cover plate 8 is installed on the top of the needle holder 2 to cover the rotary push syringe 5.

[0044] Specifically, when it is necessary to adjust the probes on the needle holder 2 and design new test distribution points before replacing a different lamp board 300 for testing, a corresponding number of plug-in probes 7 can be inserted into the tightening plate 4 according to the test point distribution of the new lamp board 300. After the plug-in probes 7 are initially fixed on the tightening plate 4, the rotary-push syringe 5 is operated to inject the liquid therein into the hose 6, so that the thin rod in the tightening plate 4 remains in close contact to further clamp the plug-in probes 7. After the plug-in probes 7 are stabilized, the new lamp board 300 to be tested is placed on the contoured fixing table 3, and after matching the grooves of the corresponding shapes, the new lamp board 300 can then be tested.

[0045] The present invention arranges a tightening plate 4 on the needle holder 2 in combination with the plug-in probe 7, so that the plug-in probe 7 can be fixed at any position on the needle holder 2, and the probe of the needle holder 2 can be quickly adjusted when detecting different light boards 300, so that the plug-in probe 7 can be quickly disassembled and installed and fixed at any position on the tightening plate 4, thereby meeting the expected use requirements and making the redesign of the needle holder 2 simpler and faster. At the same time, the contoured fixing platform 3 can also make adaptive changes to the appearance of light boards 300 of different shapes to achieve the expected use effect.

[0046] In one preferred embodiment, Figure 3 and Figure 4 As shown, it also includes: a pre-positioning plate 9 fixedly installed at the bottom of the needle holder 2, and a limiting hole 91 is opened on the pre-positioning plate 9 to accommodate the passage of the telescopic probe 73. The limiting hole 91 is corresponding to the distribution position of the test point on the light board 300. Therefore, before installing the plug-in probe 7, the plug-in probe 7 can be pre-installed on the pre-positioning plate 9. After the plug-in probe 7 is inserted into the tightening plate 4 through the pre-positioning plate 9, the pre-positioning plate 9 is fixed to the bottom of the needle holder 2. The pre-positioning plate 9 has two functions. One is to assist the plug-in probe 7 to complete the fast and accurate positioning insertion, and the other is to limit the sagging of the connecting line 721 on the plug-in probe 7 to prevent the connecting line 721 from sagging below the plug-in probe 7 and affecting the test;

[0047] A positioning rod 10 is distributed around the edges of the collection unit 1. The top of the positioning rod 10 is an inclined round edge. A buffer pad 101 is slidably arranged on the positioning rod 10. The buffer pad 101 is kept at a fixed height by a spring. A positioning sleeve 102 is distributed around the bottom of the needle holder 2. The inner diameter edge of the positioning sleeve 102 is also an inclined surface, which is conducive to the end of the positioning rod 10 directly inserting into the tube. The positions of the positioning sleeve 102 and the positioning rod 10 correspond to each other. After the positioning rod 10 is inserted into the positioning sleeve 102, in the subsequent lifting process During the process, the buffer pad 101 can be used to assist in lifting to prevent the positioning sleeve 102 and the positioning rod 10 from getting stuck together; when in use, after the light board 300 is placed on the contoured fixing table 3, the positioning sleeve 102 and the positioning rod 10 are aligned and inserted into each other, the needle holder 2 can be pressed down. Through the mutual cooperation of the positioning sleeve 102 and the positioning rod 10, the needle holder 2 can always keep moving on a fixed vertical path during the reciprocating up and down movement, so that the telescopic probe 73 on the portable probe 7 can be guaranteed to fall at the specified position every time.

[0048] In one preferred embodiment, Figure 1 , Figure 2 and Fig. 9 As shown, it also includes: a fixed base 11 for fixing and installing the collection unit 1, and a limit block 111 is symmetrically arranged on the fixed base 11. The limit block 111 is used to assist the collection unit 1 in positioning and installing to ensure that the collection unit 1 is in a fixed position. A linear drive unit 12 is arranged on the top of the fixed base 11, and the linear drive unit 12 has an electric push rod built in. The connecting plate 13 is fixedly installed on the driving end 121 of the electric push rod, and the connecting plate 13 is adapted to the length and width of the top cover plate 8; strip-shaped transverse grooves 131 are evenly arranged around the connecting plate 13, and strip-shaped longitudinal grooves 81 are also evenly arranged around the top cover plate 8. The positions of the strip-shaped transverse grooves 131 and the strip-shaped longitudinal grooves 81 correspond to each other and are arranged perpendicular to each other. The fastening bolts 132 pass through the strip-shaped transverse grooves 131 and the strip-shaped longitudinal grooves 81 to connect the connecting plate 13 to the top cover plate 8 When there is a certain misalignment between the top cover plate 8 and the connecting plate 13, it can be adjusted through the strip transverse groove 131 and the strip longitudinal groove 81. At the same time, a protruding positioning edge convex 133 is provided at the edge position of the connecting plate 13. In the process of alignment and connection between the connecting plate 13 and the top cover plate 8, the positioning edge convex 133 is used to limit the position of the top cover plate 8 to ensure that it will not be offset; specifically, the collection unit 1 is positioned by the limit block 111 and then fixedly installed on the fixed base 11, and the needle holder 2 is fixedly connected to the connecting plate 13 and the top cover plate 8 by the fastening bolts 132. During the test, the needle holder 2 is driven downward by the linear drive unit 12, so that the plug-in probe 7 detects the light board 300. After the detection is completed, the needle holder 2 is lifted and the light board 300 is replaced, and the detection action is repeated again.

[0049] In one preferred embodiment, Figure 8 and Fig. 9 As shown, it also includes: a connecting terminal board 14 fixedly installed on the side wall of the needle holder 2, an external display lamp 15 fixedly installed on the outer surface of the linear drive unit 12, and lamp beads 151 are arranged in an array on the external display lamp 15. The plug-in probe 7 inserted on the tightening plate 4 is connected to the connecting terminal board 14 through a connecting line 721, and then the connecting terminal board 14 is connected to the external display lamp 15 through a wire, so that the external display lamp 15 and the plug-in probe 7 are connected in series. When the lamp board 300 detects normally, the lamp beads 151 on the corresponding external display lamp 15 will also light up; wherein, in order to In order to avoid glare from the light source after the lamp beads 151 on the external lamp 15 are turned on, a light leakage plate 16 is provided on the external lamp 15. The light leakage plate 16 is provided with holes corresponding to the lamp beads 151 of the external lamp 15. The light of the lamp beads 151 of the external lamp 15 after being turned on passes through the small holes, which can effectively reduce light pollution. At the same time, in order to avoid eye fatigue caused by the observer looking directly at the light for a long time, the surface of the light leakage plate 16 is covered with a filter film for reducing the brightness of the light. After the brightness of the light is reduced by the filter film, the observer's viewing time of the light can be effectively prolonged and the observer's eyes can be protected.

[0050] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A LED light board test nail bed, comprising: The invention relates to a collection unit (1) and a needle holder (2); characterized in that it also comprises: a contoured fixing platform (3) installed on the top of the collection unit (1); a tightening plate (4) which is composed of thin rods of equal length piled together and embedded in the needle holder (2) with the rods in a vertical state; rotary push syringes (5) which are evenly arranged on the needle holder (2); a hose (6) which passes through the needle holder (2) and is embedded in the tightening plate (4); the hose (6) is connected in series with the rotary push syringe (5) through a connecting tube (53), and the rotary push syringe (5) has a Liquid is injected into the hose (6) and causes the hose (6) to swell, thereby squeezing the rod body in the tightening plate (4); a plug-in probe (7) is movably inserted into the tightening plate (4); a top cover plate (8) is installed on the top of the needle holder (2) and covers the rotary push syringe (5); the plug-in probe (7) comprises: a cross rod (71) having a rough surface and movably inserted into the tightening plate (4); a mounting groove (72) provided at the bottom of the cross rod (71); and a connecting line (721) connected to the side wall of the mounting groove (72); A telescopic probe (73) is embedded in the mounting groove (72); A square inner groove is arranged in the center of the surface of the profiling fixing platform (3), and external hexagonal telescopic rods (31) are arranged tightly in the inner groove. Clamps (32) are symmetrically and movably installed on both sides of the inner groove of the profiling fixing platform (3). Screws (33) are spirally penetrated on both sides of the profiling fixing platform (3), and the screws (33) are rotatably connected to the clamps (32); The plug-in probe (7) further comprises: an expansion disc (712) which is additionally provided between the cross-insertion rod (71) and the mounting groove (72); the length of the cross-insertion rod (71) is consistent with the thickness of the tightening plate (4); the end surface of the top end of the cross-insertion rod (71) is an inclined end surface (711); It also includes: a pre-positioning plate (9) mounted on the bottom of the needle holder (2); the pre-positioning plate (9) is provided with a limiting hole (91) for accommodating the passage of the telescopic probe (73); It also includes: a positioning rod (10) distributed around the collection unit (1); a buffer pad (101) movably arranged on the positioning rod (10); and a positioning sleeve (102) distributed around the needle holder (2) and corresponding to the position of the positioning rod (10).

2. The LED light board test nail bed according to claim 1, characterized in that: Also includes: A fixed base (11) on which limit blocks (111) are symmetrically arranged for positioning and installing the collection unit (1); a linear drive unit (12) is arranged on the top of the fixed base (11); and a connecting plate (13) is fixedly connected to a driving end (121) of the linear drive unit (12); The connecting plate (13) is connected to the top cover plate (8).

3. The LED light board test nail bed according to claim 2, characterized in that: Also includes: A strip-shaped transverse groove (131) is provided around the connecting plate (13); a strip-shaped longitudinal groove (81) is provided around the top cover plate (8); the strip-shaped transverse groove (131) and the strip-shaped longitudinal groove (81) are arranged perpendicular to each other; a fastening bolt (132) passes through the strip-shaped transverse groove (131) and the strip-shaped longitudinal groove (81) to connect the connecting plate (13) with the top cover plate (8); a positioning edge protrusion (133) is arranged along the edge of the connecting plate (13) and contacts the edge of the top cover plate (8).

4. The LED light board test nail bed according to claim 3, characterized in that: Also includes: A connecting terminal board (14) is arranged on the side wall of the needle holder (2); an external indicator light (15) is installed on the outer surface of the linear drive unit (12); the plug-in probe (7) is connected to the connecting terminal board (14) via the connecting wire (721), and the connecting terminal board (14) is then connected to the external indicator light (15) via a wire.

5. The LED light board test nail bed according to claim 4, characterized in that: Also includes: A light leakage plate (16) is covered on the external display lamp (15); the light leakage plate (16) is provided with holes corresponding to the lamp beads (151) of the external display lamp (15).

6. The LED light board test nail bed according to claim 5, characterized in that: The surface of the light leakage plate (16) is covered with a filter film for reducing the brightness of the light.

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