A display screen detection apparatus

Abstract

The utility model provides a kind of display screen detection device, including a conveyor belt passing through dark box, rotatable camera support is equipped in dark box, camera support is equipped with several cameras for shooting display screen in different directions. This display screen detection device installs multiple adjustable shooting viewing angles cameras on rotatable camera support, and display screen can be scanned in multiple angles by driving camera support rotation, not only high detection accuracy, but also wide detection range.

Description

Technical Field

[0001] This utility model relates to the field of multimedia machine technology, and specifically to a display screen detection device. Background Technology

[0002] The display screen is a crucial component of a multimedia machine. Before assembling the machine, it needs to be inspected, including for dark spots, bright spots, dead pixels, cracks, and scratches. This inspection can be done using a CCD camera or the human eye. However, some defects are difficult to detect from a single viewing angle. Therefore, some manufacturers use multiple cameras with adjusted shooting angles to improve accuracy. If human eye inspection is used, workers need to check from multiple perspectives. However, both methods have drawbacks. In multi-camera inspection, the viewing angles of each camera are fixed. For displays of different sizes, maintenance personnel need to adjust the cameras. Many multimedia machines are custom-made, with small batches and many varieties; frequent adjustments significantly reduce inspection efficiency, sometimes making human eye inspection more convenient. Another drawback of human eye inspection is that staring at a brightly lit display screen for extended periods can easily cause eye fatigue and may lead to worker fatigue. Utility Model Content

[0003] To address the shortcomings of the prior art, this utility model proposes a display screen detection device. Multiple cameras with adjustable shooting angles are mounted on a rotatable camera bracket. By driving the camera bracket to rotate, the display screen can be scanned from multiple angles, resulting in high detection accuracy and a wide detection range.

[0004] This utility model proposes a display screen testing device, including a conveyor belt passing through a dark box. The dark box is equipped with a rotatable camera bracket, which is equipped with several cameras with adjustable shooting angles. The camera bracket includes a shaft and a cross-shaped hanging rod located at the bottom of the shaft. The cameras are hung on the cross-shaped hanging rod by clamps.

[0005] Of the four branches of the cross-shaped support, the camera suspended on the first branch faces downwards, the camera suspended on the second branch tilts in the direction of rotation of the lifting rod, the camera suspended on the third branch tilts away from the direction of rotation of the lifting rod, and the camera suspended on the fourth branch is a spare.

[0006] The camera bracket also includes a first motor, a base, and a first bearing. The top of the shaft is fitted into the inner ring of the first bearing, and the outer ring of the first bearing is fixedly connected to the base above via a connecting rod. The first motor is located inside the base, and the shaft of the first motor passes through the base and is connected to the shaft.

[0007] Preferably, the dark box is equipped with a suspension, and the suspension is equipped with a sliding plate that reciprocates along the conveyor belt conveying direction. The machine base is suspended below the sliding plate by a lifting rod at its top.

[0008] Preferably, the slide includes a bottom plate and a top plate spaced apart. The bottom plate is provided with a threaded sleeve, a transmission gear and a drive gear, and the top plate is provided with a second motor and a limiting sleeve.

[0009] The lifting rod passes through the threaded sleeve and the limiting sleeve in sequence. The outer circumference of the lifting rod is provided with external threads, and the inner wall of the threaded sleeve is provided with internal threads that mesh with the external threads.

[0010] The rotating shaft of the second motor passes downward through the top plate and is keyed to the gear hub of the drive gear. The outer wall of the threaded sleeve is provided with teeth, and the drive gear is connected to the threaded sleeve through the transmission gear.

[0011] Preferably, the suspension includes end plates at both ends and two sliding rods arranged parallel between the end plates. One end plate is equipped with a third motor, and the other end plate is equipped with a second bearing. The shaft of the third motor is connected to a lead screw, and the front end of the lead screw is inserted into the second bearing.

[0012] The top of the skateboard is fixed with a first slider and a second slider. The first slider has a first through hole and the second slider has a second through hole. One slider rod passes through the first through hole and the other slider rod passes through the second through hole.

[0013] The second slider also has a screw hole, through which the lead screw passes and engages with the thread of the screw hole.

[0014] Preferably, the camera is provided with a connecting block, the connecting block is provided with a ball cage, and the bottom of the clamp is provided with a ball head that mates with the ball cage;

[0015] An adjustment hole is provided on one side of the ball cage, and an adjustment screw is screwed into the adjustment hole.

[0016] Preferably, the conveyor surface of the conveyor belt consists of two parallel extending rubber conveyor belts, with a groove between the two rubber conveyor belts to accommodate the raised structure of the display screen backpack.

[0017] Preferably, a chute is provided in the trench, and a traveling socket is slidably installed in the chute.

[0018] The beneficial effects of this utility model include: the display screen detection device has multiple cameras with adjustable shooting angles mounted on a rotatable camera bracket. By driving the camera bracket to rotate, the display screen can be scanned from multiple angles, resulting in high detection accuracy and a wide detection range. The display screen detection device can be equipped with at least four cameras, one for vertical shooting, one for clockwise tilting, and one for counterclockwise tilting. During rotation, this is equivalent to human eye looking down, looking forward at an angle around the display, and looking backward at an angle around the display. The last camera can be used as a backup and can also be adjusted to different detection angles as needed. Therefore, it not only has high detection accuracy but is also convenient and fast. Attached Figure Description

[0019] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein:

[0020] Figure 1 This is a perspective view of the display screen testing device of this utility model.

[0021] Figure 2 This is a schematic diagram of the internal structure of the dark box of this utility model.

[0022] Figure 3 This is a side view of the internal structure of the dark box of this utility model.

[0023] Figure 4 This is an enlarged view of the camera assembly structure of this utility model.

[0024] Figure 5 This is a cross-sectional view of the conveyor belt of this utility model.

[0025] Figure label:

[0026] 1-Dark box, 2-Conveyor belt, 21-Rubber conveyor belt, 22-Groove, 23-Chutter, 24-Wire guide trough, 3-Camera bracket, 31-Shaft, 32-Cross hanger, 321-First branch rod, 322-Second branch rod, 323-Third branch rod, 324-Fourth branch rod, 33-Clamp, 34-First motor, 35-Base, 36-First bearing, 37-Connecting rod, 38-Lifting rod, 39-Ball head, 4-Camera, 41-Connecting block, 42-Ball cage, 43-Adjustment 5-Suspension, 51-End plate, 52-Slide rod, 53-Third motor, 54-Second bearing, 55-Lead screw, 6-Slide plate, 61-Base plate, 62-Top plate, 63-Threaded sleeve, 64-Transmission gear, 65-Drive gear, 66-Second motor, 67-Limit sleeve, 68-First slider, 681-First through hole, 69-Second slider, 691-Second through hole, 692-Screw hole, 7-Travel socket, 100-Display screen, 110-Display screen backpack protrusion structure. Detailed Implementation

[0027] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0029] The principle of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0030] This invention discloses a display screen inspection device, comprising a conveyor belt 2 passing through a dark box 1. The dark box 1 contains a rotatable camera bracket 3, which is equipped with several cameras 4 that capture images of the display screen 100 from different directions. The display screen inspection device, by mounting multiple cameras 4 with adjustable shooting angles on the rotatable camera bracket 3, can scan the display screen 100 from multiple angles by driving the camera bracket 3 to rotate, achieving not only high inspection accuracy but also a wide inspection range.

[0031] The camera bracket 3 includes a shaft 31 and a cross-shaped hanging rod 32 located at the bottom of the shaft 31. Cameras 4 are mounted on the cross-shaped hanging rod 32 via clamps 33. Each branch rod can mount at least one camera 4, and additional clamps 33 can be added to mount more cameras 4. Of the four branches of the cross-shaped hanging rod 32, the camera 4 suspended on the first branch rod 321 faces downwards for vertical shooting, equivalent to a human eye looking down during rotation; the camera 4 suspended on the second branch rod 322 is tilted clockwise, equivalent to a forward oblique inspection around the monitor during rotation; the camera 4 suspended on the third branch rod 323 is tilted counterclockwise, equivalent to a backward oblique inspection around the monitor during rotation; the camera 4 suspended on the fourth branch rod 324 is a spare and can also be adjusted to different inspection angles as needed. Therefore, it not only has high inspection accuracy but is also convenient and quick.

[0032] The camera bracket 3 also includes a first motor 34, a base 35, and a first bearing 36. The top of the shaft 31 is fitted into the inner ring of the first bearing 36. The outer ring of the first bearing 36 is fixedly connected to the upper base 35 through a connecting rod 37. The first motor 34 is located inside the base 35. The shaft of the first motor 34 passes through the base 35 and is connected to the shaft 31 to drive the cross-shaped hanging rod 32 to rotate.

[0033] In this embodiment, the darkroom 1 is equipped with a suspension 5, and the suspension 5 has a sliding plate 6 that reciprocates along the conveyor belt 2. The camera base 35 is suspended below the sliding plate 6 by a lifting rod 38 at its top. Through the suspension 5, the camera bracket 3 can move back and forth along the conveyor belt 2, which is very suitable for inspecting ultra-large displays.

[0034] In this embodiment, the sliding plate 6 includes a base plate 61 and a top plate 62 spaced apart. The base plate 61 is provided with a threaded sleeve 63, a transmission gear 64, and a drive gear 65. The top plate 62 is provided with a second motor 66 and a limiting sleeve 67. The lifting rod 38 passes through the threaded sleeve 63 and the limiting sleeve 67 in sequence. The outer periphery of the lifting rod 38 is provided with external threads, and the inner wall of the threaded sleeve 63 is provided with internal threads that mesh with the external threads. The rotating shaft of the second motor 66 passes downward through the top plate 62 and is keyed to the gear hub of the drive gear 65. The outer wall of the threaded sleeve 63 is provided with teeth. The drive gear 65 is connected to the threaded sleeve 63 through the transmission gear 64. The second motor 66 is used to drive the camera bracket 3 to rise and fall. The threaded sleeve 63 is rotatably mounted on the base plate 61. The second motor 66 drives the threaded sleeve 63 to rotate through the drive gear 65 and the transmission gear 64. The threaded sleeve 63 then drives the lifting rod 38 to rise and fall with the camera bracket 3 through the internal threads. The lifting rod 38 has an oblong cross-section, and the inner shape of the limiting sleeve 67 matches the shape of the lifting rod 38 to limit the rotation of the lifting rod 38.

[0035] In this embodiment, the suspension 5 includes end plates 51 at both ends and two sliding rods 52 arranged parallel between the end plates 51. One end plate 51 is equipped with a third motor 53, and the other end plate 51 is equipped with a second bearing 54. The shaft of the third motor 53 is connected to a lead screw 55, and the front end of the lead screw 55 is inserted into the second bearing 54. The top of the slide plate 6 is fixedly equipped with a first slider 68 and a second slider 69. The first slider 68 has a first through hole 681, and the second slider 69 has a second through hole 691. One sliding rod 52 passes through the first through hole 681, and the other sliding rod 52 passes through the second through hole 691. The second slider 69 also has a screw hole 692, and the lead screw 55 passes through the screw hole 692 and is threaded into the screw hole 692. When the third motor 53 drives the lead screw 55 to rotate, the lead screw 55 drives the slide plate 6 to move along the two sliding rods 52 through the second slider 69, so as to achieve the purpose of translating the camera bracket 3.

[0036] In this embodiment, the camera 4 is provided with a connecting block 41, the connecting block 41 is provided with a ball cage 42, and the bottom of the clamp 33 is provided with a ball head 39 that cooperates with the ball cage 42. An adjustment hole is provided on one side of the ball cage 42, and an adjustment screw 43 is screwed into the adjustment hole. After loosening the adjustment screw 43, the orientation of the camera 4 can be freely adjusted. After the adjustment is completed, the adjustment screw 43 is tightened, and the front end of the adjustment screw 43 abuts against the ball head 39 to prevent the camera 4 from changing its orientation.

[0037] In this embodiment, the conveyor surface of the conveyor belt 2 is composed of two parallel extending rubber conveyor belts 21, with a groove 22 between the two rubber conveyor belts 21 to accommodate the protruding structure 110 of the display screen backpack. Additionally, a chute 23 is provided within the groove 22, and a portable socket 7 is slidably disposed within the chute 23. After the plug of the display screen 100 is inserted into the portable socket 7, the portable socket 7 can follow the display screen 100 through the dark box 1 by the pull of the plug wire. The end of the chute 23 near the unloading end of the conveyor belt 2 is raised. After the plug is unplugged, the portable socket 7 will automatically slide along the inclined chute 23 to its initial position near the loading end of the conveyor belt 2. A wire guide groove 24 is provided in the middle of the chute 23, through which the connecting wire of the portable socket 7 passes to connect to the mains power.

[0038] The working process of the display screen testing device is as follows:

[0039] When the display screen 100 enters the feeding end of the conveyor belt 2, the plug is inserted into the accompanying socket 7 to turn on the power, the conveyor belt 2 is started to send the display screen 100 into the dark box 1, and then the conveyor belt 2 is temporarily stopped.

[0040] For small displays, the camera bracket 3 is positioned above the center of the display. The first motor 34 drives the camera bracket 3 to rotate, and the camera 4 scans and detects the display screen 100. Then, the camera bracket 3 is raised and scans and detects the display screen 100 again while rotating. For longer displays, the camera bracket 3 is positioned above one end of the display screen 100 and moves to the other end of the display screen 100 while rotating. Then, the camera bracket 3 is raised and returns to the initial position while rotating. The entire process is a continuous scanning and detection process.

[0041] After the test is completed, start the conveyor belt 2 to send the display screen 100 to the discharge end, and unplug the plug. The accompanying socket 7 will automatically return to the initial position at the feed end.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A display screen testing device, characterized in that, It includes a conveyor belt passing through a darkroom, the darkroom having a rotatable camera bracket, the camera bracket having several cameras with adjustable shooting angles, the camera bracket including a shaft and a cross-shaped hanging rod located at the bottom of the shaft, the cameras being mounted on the cross-shaped hanging rod via clamps; Of the four branches of the cross-shaped hanging rod, the camera suspended on the first branch faces downwards, the camera suspended on the second branch tilts in the direction of rotation of the lifting rod, the camera suspended on the third branch tilts away from the direction of rotation of the lifting rod, and the camera suspended on the fourth branch is a spare. The camera bracket also includes a first motor, a base, and a first bearing. The top of the shaft is fitted into the inner ring of the first bearing, and the outer ring of the first bearing is fixedly connected to the base above via a connecting rod. The first motor is located inside the base, and the shaft of the first motor passes through the base and is connected to the shaft.

2. The display screen testing device as described in claim 1, characterized in that, The dark box is equipped with a suspension frame, which has a sliding plate that reciprocates along the conveyor belt's conveying direction. The machine base is suspended below the sliding plate by a lifting rod at its top.

3. The display screen testing device as described in claim 2, characterized in that, The slide plate includes a base plate and a top plate spaced apart. The base plate is provided with a threaded sleeve, a transmission gear and a drive gear, and the top plate is provided with a second motor and a limiting sleeve. The lifting rod passes through the threaded sleeve and the limiting sleeve in sequence. The outer periphery of the lifting rod is provided with an external thread, and the inner wall of the threaded sleeve is provided with an internal thread that meshes with the external thread. The rotating shaft of the second motor passes downward through the top plate and is keyed to the gear hub of the drive gear. The outer wall of the threaded sleeve is provided with teeth. The drive gear is connected to the threaded sleeve through the transmission gear.

4. The display screen testing device as described in claim 3, characterized in that, The suspension includes end plates at both ends and two sliding rods arranged parallel between the end plates. One end plate is equipped with a third motor, and the other end plate is equipped with a second bearing. The shaft of the third motor is connected to a lead screw, and the front end of the lead screw is inserted into the second bearing. The top of the slide is fixed with a first slider and a second slider. The first slider has a first through hole, and the second slider has a second through hole. One slider rod passes through the first through hole, and the other slider rod passes through the second through hole. The second slider also has a screw hole, and the lead screw passes through the screw hole and engages with the thread of the screw hole.

5. The display screen testing device as described in claim 1, characterized in that, The camera is provided with a connecting block, the connecting block is provided with a ball cage, and the bottom of the clamp is provided with a ball head that cooperates with the ball cage; An adjustment hole is provided on one side of the ball cage, and an adjustment screw is screwed into the adjustment hole.

6. The display screen testing device as described in claim 1, characterized in that, The conveyor belt's conveying surface consists of two parallel, extending rubber conveyor belts, with a groove between the two rubber conveyor belts to accommodate the raised structure of the display screen backpack.

7. The display screen testing device as described in claim 6, characterized in that, The trench is provided with a chute, and a portable socket is slidably installed in the chute.

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