LED display screen testing device

Abstract

The utility model discloses an LED display screen testing device, which relates to the field of LED display screen testing, and comprises a testing table, a jig, a PCB (printed circuit board) circuit conversion board, a fixing mechanism, a clamping mechanism and a clamping mechanism, the jig is arranged at the top of the testing table, the PCB circuit conversion board is fixedly mounted on the jig and used for connecting an LED display screen to be tested, and the fixing mechanism is mounted on the jig and used for clamping the LED display screen to be tested. The fixing mechanism is used for limiting and fixing the LED display screen; the detection probe is arranged at the top of the jig and is used for capturing and recording a display image of the LED display screen; according to the LED display screen testing device, through the design of the testing control mechanism, flexible adjustment of the jig is achieved, the inclination angle of the LED display screen can be conveniently adjusted through cooperation of the adjusting assembly and the A rotation driving piece, and therefore the LED display screen testing device can meet the testing requirements under different visual angles, the testing flexibility is improved, the universality of the device is improved, and the application range of the device is widened.

Description

Technical Field

[0001] The utility model relates to an LED display screen testing technology, in particular to an LED display screen testing device. Background Art

[0002] As a key component of modern information display technology, LED displays play an important role in various display fields. However, in the production and quality control process of LED displays, how to ensure the stability and reliability of their performance has always been the focus of the industry.

[0003] When testing existing LED displays, viewing angle testing is required. Viewing angle testing is an important means of evaluating the visibility and color consistency of LED displays at different viewing angles. Traditional LED display testing often relies on manual testing, and errors and instability in human operation often affect the reliability of test results. Therefore, the industry urgently needs a device that can automatically and efficiently test the performance of LED displays. Utility Model Content

[0004] The purpose of the utility model is to provide an LED display screen testing device to solve the problem in the prior art that the testing of traditional LED display screens often relies on manual inspection, and the errors and instability of human operation often affect the reliability of the test results.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an LED display screen test device, comprising a test bench, a fixture, and a PCB circuit conversion board, wherein the fixture is arranged on the top of the test bench, and the PCB circuit conversion board is fixedly mounted on the fixture and is used to connect to the LED display screen to be tested, and further comprising:

[0006] A fixing mechanism, which is installed on the fixture and is used to limit and fix the LED display screen;

[0007] A detection probe is provided on the top of the fixture and is used to capture and record the display image of the LED display;

[0008] Multiple elastic members are evenly distributed on the bottom of the fixture, the top ends of the multiple elastic members are respectively fixedly connected to the lower surface of the fixture, and the bottom ends of the multiple elastic members are respectively fixedly connected to the upper surface of the test bench;

[0009] A test control mechanism is installed on a test bench and connected to a fixture. The test control mechanism includes a support sleeve, an inner shaft, a support arm, a support shaft, an adjustment assembly and a rotation drive component A. The top of the support sleeve is fixedly connected to the fixture, the inner wall of the support sleeve is rotatably connected to the outer wall of the inner shaft, the bottom end of the inner shaft is fixedly connected to the support arm, one end of the support arm is rotatably connected to the support shaft through a rotating shaft, one side of the support arm is connected to an adjustment assembly for driving it to rotate around the axis of the rotating shaft, and the bottom end of the support shaft is connected to a rotation drive component A for driving it to rotate around its own axis.

[0010] Furthermore, the fixing mechanism includes two symmetrically arranged clamping members, the bottom ends of which are connected to guide members that limit their movement along the length direction of the fixture, and one side of the two clamping members is connected to the same moving drive assembly, which is used to drive the two clamping members to move toward or in opposite directions.

[0011] Furthermore, elastic pads are provided on opposite sides of the two clamping members.

[0012] Furthermore, both clamping members are provided with a limiting assembly, which includes a screw and a pressing member. The outer wall of the screw is threadedly connected to the clamping member, and the bottom end of the screw is rotatably connected to the pressing member.

[0013] Furthermore, the guide member is a guide rod, both ends of which are fixedly connected to the inner wall of the fixture, and the outer wall of the guide rod is slidably connected to the bottom end of the adjacent clamping member.

[0014] Furthermore, the mobile drive assembly includes a B rotating drive member, a gear and two racks. One side of the gear is connected to the B rotating drive member for driving it to rotate around its own axis. The two racks are respectively arranged on both sides of the gear. The two racks correspond one-to-one to the two clamping members. One end of the two racks is fixedly connected to the bottom end of the adjacent clamping members, and the side surfaces of the two racks are respectively slidably connected to the jig.

[0015] Furthermore, the rotating drive component includes a transmission shaft and a motor. The bottom end of the transmission shaft is rotatably connected to the jig. The gear is fixedly sleeved on the outside of the transmission shaft. The motor is fixedly installed on the jig. The output shaft end of the motor is connected to the transmission shaft through a transmission belt.

[0016] Furthermore, a bracket is fixedly installed on the test bench, and the detection probe is fixedly installed on the top of the bracket.

[0017] Furthermore, the adjustment component includes a fixed frame and a telescopic drive member, the fixed frame is fixedly sleeved on the outside of the support shaft, the fixed end of the telescopic drive member is hinged to the fixed frame, and the movable end of the telescopic drive member is hinged to the end of the support arm away from the rotating shaft.

[0018] Furthermore, a buffer pad is provided on the upper surface of the jig.

[0019] Compared with the existing technology, the LED display screen test device provided by the present invention realizes flexible adjustment of the fixture through the design of the test control mechanism. By cooperating with the adjustment component and the A rotary drive member, the tilt angle of the LED display screen can be conveniently adjusted to meet the test requirements under different viewing angles. This not only improves the flexibility of the test, but also enhances the versatility and applicability of the device, significantly improving the accuracy and efficiency of the test.

[0020] By simulating the shaking during transportation and carrying, the mechanical properties of the LED display are tested. This not only helps to evaluate the display's ability to resist shock and vibration in real environments, but also provides strong support for product quality control. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall external structure provided by an embodiment of the present utility model;

[0023] Figure 2 A schematic diagram of a front cross-sectional structure provided for an embodiment of the present utility model;

[0024] Figure 3 A schematic diagram of a partial three-dimensional structure provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of a top-down cross-sectional structure provided for an embodiment of the present utility model;

[0026] Figure 5 A schematic diagram of the structure of a test control mechanism provided in an embodiment of the present utility model;

[0027] Figure 6 The embodiment of the present invention provides Figure 2 A is an enlarged schematic diagram.

[0028] Description of reference numerals:

[0029] 1. Test bench; 2. Fixture; 3. PCB circuit conversion board; 4. Fixing mechanism; 41. Clamping member; 42. Guide member; 43. B rotating drive member; 431. Transmission shaft; 432. B motor; 44. Gear; 45. Rack; 46. Screw; 47. Pressing member; 5. Detection probe; 6. Elastic member; 7. Test control mechanism; 71. Support sleeve; 72. Inner shaft; 73. Support arm; 74. Support shaft; 75. Fixing frame; 76. Telescopic drive member; 8. Bracket; 9. Buffer pad. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] See also Figures 1 to 6 A LED display screen test device includes a test bench 1, a fixture 2 and a PCB circuit conversion board 3. The fixture 2 is set on the top of the test bench 1. The PCB circuit conversion board 3 is fixedly installed on the fixture 2 and is used to connect the LED display screen to be tested. The installation position of the PCB circuit conversion board 3 on the fixture 2 can be set according to different models of LED display screens. The control signals and power signals required by the LED display screen on the PCB circuit conversion board 3 are designed on the PCB circuit conversion board 3. The design of the PCB circuit conversion board 3 can be changed according to the specifications of different LED display screen connectors and the types and quantities of signal inputs, which is more diverse. It can also be applied to the aging process of LED display screens. There is no need to assemble the PCB circuit conversion board 3 and the supporting box for the aging process, which simplifies the production process on the production end. This is an existing technology and also includes:

[0032] A fixing mechanism 4 is mounted on the fixture 2 and is used to limit and fix the LED display screen;

[0033] The detection probe 5 is provided on the top of the fixture 2. The detection probe 5 is used to capture and record the display image of the LED display screen. The detection probe 5 can adopt an SSR-S model light sensing probe or a high-definition industrial endoscope probe (such as the Taishilong NTS300 model) to capture and record the display image of the LED display screen with high precision;

[0034] Multiple elastic members 6 are evenly distributed on the bottom of the fixture 2. The top ends of the multiple elastic members 6 are fixedly connected to the lower surface of the fixture 2, and the bottom ends of the multiple elastic members 6 are fixedly connected to the upper surface of the test bench 1. The elastic members 6 can be springs.

[0035] The test control mechanism 7 is installed on the test bench 1 and connected to the fixture 2. The test control mechanism 7 includes a support sleeve 71, an inner shaft 72, a support arm 73, a support shaft 74, an adjustment component and an A rotation drive member. The top of the support sleeve 71 is fixedly connected to the fixture 2, the inner wall of the support sleeve 71 is rotatably connected to the outer wall of the inner shaft 72, the bottom end of the inner shaft 72 is fixedly connected to the support arm 73, one end of the support arm 73 is rotatably connected to the support shaft 74 through a rotating shaft, one side of the support arm 73 is connected to an adjustment component for driving it to rotate around the axis of the rotating shaft, the bottom end of the support shaft 74 is connected to the A rotation drive member for driving it to rotate around its own axis, the A rotation drive member is an A motor, and the A motor is fixedly installed on the test bench 1. The output shaft end of the A motor is fixedly connected to the bottom end of the support shaft 74, and the outer wall of the support shaft 74 is rotatably connected to the test bench 1.

[0036] Existing LED displays need to be tested before leaving the factory to control the quality of the LED displays. During the testing, the existing LED displays need to be tested for viewing angle. Viewing angle testing is to test the visibility and color consistency of the display at different viewing angles. Traditional LED display testing often relies on manual testing, and the errors and instability of human operation often affect the reliability of the test results.

[0037] To this end, the present application connects the LED display screen to the PCB circuit conversion board 3, and then fixes the LED display screen to the fixture 2 with a fixing mechanism 4. The multiple elastic members 6 and the test control mechanism 7 at the bottom of the fixture 2 support the fixture 2. The PCB circuit conversion board 3 provides control signals and power input, so that the LED display screen displays images, animations, or videos. The detection probe 5 at the top of the fixture 2 can capture and record the display image of the LED display screen with high precision, providing detailed data support for subsequent image analysis and performance evaluation.

[0038] When viewing angle detection is required, the support arm 73 is driven to rotate around the axis of the rotating shaft through the adjustment component. When the support arm 73 rotates, the inner shaft 72 thereon is driven to rotate. The inner shaft 72 is tilted and drives the jig 2 to tilt through the support sleeve 71, thereby tilting the LED display screen. In order to detect the visibility and color consistency of the LED display screen at different viewing angles, the support shaft 74 is driven to rotate by the A rotary drive member. When the support shaft 74 rotates, the jig 2 is driven through the support arm 73, the inner shaft 72 and the support sleeve 71, so that the tilt angle of the inner shaft 72 and the support sleeve 71 changes, thereby enabling the detection probe 5 to capture and record the display images of the LED display screen at different angles, so as to test the visibility and color consistency of the LED display screen at different viewing angles.

[0039] In order to ensure that the LED display screen can work stably and without failure under various environmental conditions, a mechanical performance test is usually required to detect whether the display screen can withstand certain mechanical shocks and vibrations during transportation and carrying. To this end, the present application can drive the support arm 73 to rotate around the axis of the rotation shaft through the adjustment component, so that the support arm 73 drives the inner shaft 72 and the support sleeve 71 to rotate the jig 2 around the axis of the rotation shaft. The jig 2 is tilted. At this time, the LED display screen on the jig 2 is tilted, and the support shaft 74 is driven to rotate continuously by the A rotation drive member. When the support shaft 74 rotates continuously, it drives the jig 2 to rotate continuously around the axis of the support shaft 74 through the support arm 73, the inner shaft 72 and the support sleeve 71, causing the jig 2 to shake, and the jig 2 drives the LED display screen thereon to shake, so as to simulate the shaking during transportation and carrying, thereby effectively realizing the test of the mechanical properties of the LED display screen. In addition, the rotation angle of the support arm 73 around the axis of the rotation shaft can be adjusted by the adjustment component to adjust the shaking amplitude of the jig 2, thereby simulating the test of the mechanical properties of the LED display screen under different environments, and achieving better test results.

[0040] In one embodiment of the present invention, the fixing mechanism 4 includes two symmetrically arranged clamping members 41, the bottom ends of the clamping members 41 are connected to a guide member 42 that limits their movement along the length direction of the fixture 2, and one side of the two clamping members 41 is connected to the same moving drive assembly, which is used to drive the two clamping members 41 to move toward or in opposite directions;

[0041] When the two clamping members 41 are driven toward each other by the mobile driving assembly, the two clamping members 41 cooperate to clamp and fix the LED display screen, so that the LED display screen is firmly placed on the fixture 2, thereby preventing the LED display screen and the PCB circuit conversion board 3 from moving relative to each other and causing the connection to become loose.

[0042] In one embodiment of the present invention, both clamping members 41 are provided with a limit assembly, which includes a screw 46 and a pressing member 47. The pressing member 47 is made of silicone to prevent the pressing member 47 from damaging the LED display. The outer wall of the screw 46 is threadedly connected to the clamping member 41, and the bottom end of the screw 46 is rotatably connected to the pressing member 47.

[0043] In order to prevent relative sliding between the LED display and the clamping member 41, the screw 46 can be rotated to move the screw 46 relative to the clamping member 41 toward the LED display. The screw 46 drives the pressing member 47 to move against the LED display, thereby effectively fixing the LED display.

[0044] In one embodiment of the present invention, elastic pads are provided on opposite sides of the two clamping members 41 to prevent the clamping members 41 from clamping the LED display screen rigidly and damaging the LED display screen.

[0045] In one embodiment of the present invention, the guide member 42 is a guide rod, both ends of which are fixedly connected to the inner wall of the fixture 2, and the outer wall of the guide rod is slidably connected to the bottom end of the adjacent clamping member 41;

[0046] The movement of the clamping member 41 is limited by the guide rod, so that the movement of the clamping member 41 is more stable.

[0047] In one embodiment of the present invention, the mobile drive assembly includes a B rotary drive member 43, a gear 44 and two racks 45. One side of the gear 44 is connected to the B rotary drive member 43 for driving it to rotate around its own axis. The two racks 45 are respectively arranged on both sides of the gear 44. The two racks 45 correspond one-to-one to the two clamping members 41. One end of the two racks 45 is fixedly connected to the bottom end of the adjacent clamping member 41, and the side surfaces of the two racks 45 are respectively slidably connected to the jig 2.

[0048] The gear 44 is driven to rotate by the B rotary driving member 43 . The rotation of the gear 44 drives the two racks 45 to move toward or in opposite directions. When the two racks 45 move in opposite directions, they drive the two clamping members 41 to move toward or in opposite directions.

[0049] In one embodiment of the present invention, the B rotary drive member 43 includes a transmission shaft 431 and a B motor 432. The bottom end of the transmission shaft 431 is rotatably connected to the fixture 2. The gear 44 is fixedly sleeved on the outside of the transmission shaft 431. The B motor 432 is fixedly mounted on the fixture 2. The output shaft end of the B motor 432 is transmission-connected to the transmission shaft 431 through a transmission belt. The output shaft end of the B motor 432 and the transmission shaft 431 are both fixedly sleeved with transmission wheels, and the two transmission wheels are externally sleeved with the same transmission belt.

[0050] The B motor 432 drives the transmission shaft 431 to rotate through the transmission belt, and the transmission shaft 431 rotates, which drives the gear 44 to rotate.

[0051] In one embodiment of the present invention, a bracket 8 is fixedly installed on the test bench 1, and the detection probe 5 is fixedly installed on the top of the bracket 8. The bracket 8 supports the detection probe 5. The bracket 8 can be optionally set to an adjustable type to adjust the height of the detection probe 5 to adapt to the detection of different types of LED display screens.

[0052] In one embodiment of the present invention, the adjustment assembly includes a fixed frame 75 and a telescopic drive member 76. The telescopic drive member 76 is a telescopic cylinder or a hydraulic cylinder. The fixed frame 75 is fixedly sleeved on the outside of the support shaft 74. The fixed end of the telescopic drive member 76 is hinged to the fixed frame 75. The movable end of the telescopic drive member 76 is hinged to the end of the support arm 73 away from the rotating shaft.

[0053] When the moving end of the telescopic driving member 76 is extended and retracted, it drives the support arm 73 to rotate around the axis of the rotating shaft. At the same time, by fixing the fixing frame 75 on the support shaft 74, the telescopic driving member 76 is installed on the fixing frame 75. Therefore, when the A rotating driving member drives the support shaft 74 to rotate, it can also drive the support arm 73 to rotate around the axis of the rotating shaft to adjust the tilt amplitude of the LED display screen.

[0054] In one embodiment of the present invention, a buffer pad 9 is provided on the upper surface of the jig 2 to prevent friction between the jig 2 and the LED display screen, which may cause damage to the LED display screen.

[0055] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0056] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0057] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0059] In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A LED display screen test device, comprising a test bench (1), a fixture (2) and a PCB circuit conversion board (3), wherein the fixture (2) is arranged on the top of the test bench (1), and the PCB circuit conversion board (3) is fixedly mounted on the fixture (2) and used to connect the LED display screen to be tested, characterized in that: Also includes: A fixing mechanism (4) is mounted on the fixture (2), and the fixing mechanism (4) is used to limit and fix the LED display screen; A detection probe (5) is arranged on the top of the fixture (2), and the detection probe (5) is used to capture and record the display image of the LED display screen; A plurality of elastic members (6) are evenly distributed on the bottom of the jig (2), the top ends of the plurality of elastic members (6) are respectively fixedly connected to the lower surface of the jig (2), and the bottom ends of the plurality of elastic members (6) are respectively fixedly connected to the upper surface of the test bench (1); The test control mechanism (7) is installed on the test bench (1) and connected to the fixture (2). The test control mechanism (7) comprises a support sleeve (71), an inner shaft (72), a support arm (73), a support shaft (74), an adjustment component and a rotation drive member A. The top end of the support sleeve (71) is fixedly connected to the fixture (2), the inner wall of the support sleeve (71) is rotationally connected to the outer wall of the inner shaft (72), the bottom end of the inner shaft (72) is fixedly connected to the support arm (73), one end of the support arm (73) is rotationally connected to the support shaft (74) through a rotating shaft, one side of the support arm (73) is connected to the adjustment component for driving it to rotate around the axis of the rotating shaft, and the bottom end of the support shaft (74) is connected to the rotation drive member A for driving it to rotate around its own axis.

2. The LED display screen testing device according to claim 1, characterized in that: The fixing mechanism (4) comprises two symmetrically arranged clamping members (41), the bottom ends of the clamping members (41) are connected to a guide member (42) for limiting the movement of the clamping members along the length direction of the fixture (2), and one side of the two clamping members (41) is connected to the same moving drive assembly, which is used to drive the two clamping members (41) to move toward or in opposite directions.

3. The LED display screen testing device according to claim 2, characterized in that: Elastic pads are provided on opposite sides of the two clamping members (41).

4. The LED display screen testing device according to claim 2, characterized in that: The two clamping members (41) are both provided with a limit assembly, which includes a screw (46) and a pressing member (47). The outer wall of the screw (46) is threadedly connected to the clamping member (41), and the bottom end of the screw (46) is rotatably connected to the pressing member (47).

5. The LED display screen testing device according to claim 2, characterized in that: The guide member (42) is a guide rod, both ends of which are fixedly connected to the inner wall of the fixture (2), and the outer wall of the guide rod is slidably connected to the bottom end of the adjacent clamping member (41).

6. The LED display screen testing device according to claim 2, characterized in that: The mobile driving assembly includes a B rotating driving member (43), a gear (44) and two racks (45). One side of the gear (44) is connected to the B rotating driving member (43) for driving it to rotate around its own axis. The two racks (45) are respectively arranged on both sides of the gear (44). The two racks (45) correspond to the two clamping members (41) one by one. One end of the two racks (45) is fixedly connected to the bottom end of the adjacent clamping member (41), and the side surfaces of the two racks (45) are respectively slidably connected to the fixture (2).

7. The LED display screen testing device according to claim 6, characterized in that: The B rotating drive member (43) includes a transmission shaft (431) and a B motor (432). The bottom end of the transmission shaft (431) is rotationally connected to the fixture (2). The gear (44) is fixedly sleeved on the outside of the transmission shaft (431). The B motor (432) is fixedly installed on the fixture (2). The output shaft end of the B motor (432) is transmission-connected to the transmission shaft (431) via a transmission belt.

8. The LED display screen testing device according to claim 1, characterized in that: A bracket (8) is fixedly mounted on the test bench (1), and a detection probe (5) is fixedly mounted on the top of the bracket (8).

9. The LED display screen testing device according to claim 1, characterized in that: The adjustment component comprises a fixed frame (75) and a telescopic driving member (76), wherein the fixed frame (75) is fixedly sleeved on the outside of the support shaft (74), the fixed end of the telescopic driving member (76) is hinged to the fixed frame (75), and the movable end of the telescopic driving member (76) is hinged to an end of the support arm (73) away from the rotating shaft.

10. The LED display screen testing device according to claim 1, characterized in that: A buffer pad (9) is provided on the upper surface of the jig (2).

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