OLED screen heat dissipation performance detection equipment

Abstract

This invention relates to the field of OLED screen testing technology and discloses an OLED screen heat dissipation performance testing device, including a cabinet with a working cavity at the top, a support plate fixedly connected to the rear inner wall of the working cavity, a thermal imager fixedly connected to the front wall of the support plate, a support frame fixedly connected to the rear inner wall and bottom inner wall of the working cavity, and a motor fixedly connected to the bottom wall of the working cavity. The device also includes: a folding mechanism fixedly connected to the front of the support frame; a rotating mechanism positioned above the folding mechanism; and an adjusting mechanism positioned in front of the folding mechanism. The folding mechanism includes a transmission component and a folding component. The transmission component is slidably connected to the front of the support frame via a sliding member, and the folding component is fixedly connected to the front of the working cavity via a fixing member. Through the application of the above components, this invention enables the display screen to simulate daily use conditions, undergoing folding and bending, thereby detecting the heat dissipation of the display screen.

Description

Technical Field

[0001] This invention relates to the field of OLED screen testing technology, specifically to OLED screen heat dissipation performance testing equipment. Background Technology

[0002] During operation, OLED displays generate heat due to energy loss when electrical energy is converted into light energy, including components such as the light-emitting layer and driving circuits. If this heat cannot be effectively dissipated, it can lead to a series of problems, and in severe cases, it may even cause safety hazards due to localized overheating. Therefore, heat dissipation performance testing is essential. OLED screen heat dissipation performance testing evaluates the screen's heat dissipation efficiency through real-time monitoring and data analysis, helping manufacturers to identify shortcomings in their heat dissipation design in a timely manner, thereby optimizing the screen's heat dissipation structure and selecting more suitable heat dissipation materials.

[0003] The application scenarios of foldable flexible screens are characterized by dynamic bending, easy material fatigue, and susceptibility to multiple environmental factors. Their heat dissipation performance will continue to change with shape changes and long-term use. During use, the testing equipment mainly targets the temperature of flexible OLED displays by placing them on the testing platform. However, it lacks the ability to test the heat dissipation of the display when simulating folding and bending conditions during daily use. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an OLED screen heat dissipation performance testing device, comprising a cabinet with a working cavity at the top, a heat flow meter disposed on the right side of the cabinet with the working cavity, a support plate fixedly connected to the rear inner wall of the working cavity, a thermal imager fixedly connected to the front wall of the support plate, a support frame fixedly connected to the rear inner wall and bottom inner wall of the working cavity, the support frame being located below the support plate, and a motor fixedly connected to the bottom wall of the working cavity, and further comprising: The folding mechanism is fixedly connected to the front side of the support frame; the folding mechanism is used to fold the display screen. A rotating mechanism is located above the folding mechanism and is used to detect the temperature of the inner screen when the display screen is folded. An adjustment mechanism is located on the front side of the folding mechanism and is used to adjust the position of the rotating mechanism. Among them, the heat flow meter is used to regulate the stability of the internal temperature of the cabinet, and the thermal imager is used to detect the temperature of the screen when the display screen is not folded, and to detect the screen's heat dissipation capacity. The folding mechanism includes: The transmission assembly is slidably connected to the front side of the support frame via a sliding member. The sliding component includes a slide rail fixedly connected to the front side of the support frame; Folding assembly, which is fixed to the front of the cabinet working cavity by fasteners; The fasteners include two fixed shafts fixedly connected to the inner wall of the rear side of the working cavity of the cabinet, and a gear is rotatably connected to the outer wall of each of the two fixed shafts; The transmission component is used to drive the folding component to fold the display screen. Preferably, the rotating mechanism includes: A rotating assembly, which is mounted on the bottom of a support plate via a movable component; The moving part includes a slide rail two fixedly connected to the bottom of the support plate, an L-shaped rotating shaft slidably connected to the front side of the support plate, a protruding rod fixedly connected to the top of the L-shaped rotating shaft, a limit groove opened on the outer wall of the support plate, and a rack slidably connected to the outer wall of the slide rail two. The follower component is connected to the outer wall of the horizontal section of the L-shaped rotating shaft via a rotating component; The rotating component includes a fixed rod that is fixedly connected to the horizontal section of the L-shaped rotating shaft, and two follower plates are rotatably connected to the outer wall of the fixed rod; The rotating component is located below the support plate and is used to drive the follower component to rotate intermittently. Preferably, the adjustment mechanism includes: A one-way adjustment component is mounted on the outer wall of the L-shaped rotating shaft via a spring. The spring component includes a support shell set at the top of the horizontal section of the L-shaped rotating shaft, a spring one fixedly connected to the bottom of the support shell, an adjusting rod slidably connected to the inner wall of the support shell, a spring two sleeved on the outer wall of the adjusting rod, and a top block fixedly connected to the outer wall of the support shell, wherein a moving groove is provided on the outer wall of the top block. The clamping assembly is disposed on the front side of gear one via a folding component; The folding component includes two rotating blocks that are fixedly connected to one side wall of the gear; the rotating blocks are fixedly connected to one side wall of the gear through an integral sleeve, and two fixed shafts pass through the two gears and are rotatably connected to the sleeve of the rotating blocks. Among them, the unidirectional adjustment component adjusts the position of the follower component when the follower component rotates to a certain position; the clamping component adjusts the angle during the folding process of the display screen.

[0005] Preferably, the transmission assembly includes a lead screw rotatably connected to the bottom wall of the cabinet working cavity, a movable block being helically connected to the outer wall of the lead screw, and a fixed plate being fixedly connected to the side wall of the movable block; The upper side of the lead screw is rotatably connected to the support plate, and two vertical slide grooves are opened on the fixed plate. The two fixed shafts are slidably connected to the two slide grooves respectively, and the output shaft of the motor is fixedly connected to the lead screw through a coupling.

[0006] Preferably, the folding assembly includes irregularly shaped toothed racks that are fixedly connected to the outer wall of the fixed plate, and a protrusion is fixedly connected to the front side of the irregularly shaped toothed racks; Among them, the upper side of the irregular rack is provided with toothed sections, and the lower side is a smooth section. The toothed sections can mesh with two gears.

[0007] Preferably, the rotating assembly includes two gears 2 disposed on the lower side of the support plate. The gear 2 closer to the thermal imager is fixedly connected to the outer wall of the vertical section of the L-shaped rotating shaft, and the gear 2 farther from the thermal imager is fixedly connected to the non-threaded section of the outer wall of the lead screw. A sleeve is rotatably connected to the outer wall of the vertical section of the L-shaped rotating shaft. A connecting plate is fixedly connected to the outer wall of the sleeve. A limit rod is fixedly connected to the outside of the sleeve. A protruding block is fixedly connected to the outer wall of the sleeve. Both the protruding block and the limit rod are located below the connecting plate. Among them, gear two always meshes with the rack on slide rail two, the sleeve is located below gear two, and a protruding rod is provided on the part of the L-shaped rotating shaft that passes through the support plate to prevent the L-shaped rotating shaft from rotating under special circumstances.

[0008] Preferably, the follower assembly includes flexible sensors fixedly connected to the outer wall of the follower plate, and a torsion spring is sleeved on the outer wall of the fixing rod; two telescopic rods are fixedly connected to the outer wall of the sleeve through a connecting plate, and both telescopic rods are fixedly connected to the protrusion on the front side of the irregular rack. The two ends of the torsion spring are fixedly connected to the two follower plates, and the two telescopic rods are located below the sleeve.

[0009] Preferably, the unidirectional adjustment assembly includes a rotating shaft fixedly connected to the inner wall of the follower plate on the left side, a buckle 1 rotatably connected to the outer wall of the rotating shaft, a buckle 2 fixedly connected to the inner wall of the follower plate on the right side, and a torsion spring 2 sleeved on the outer wall of the rotating shaft. Among them, buckle one and buckle two are compatible, both buckle one and buckle two are made of hard plastic material, and torsion spring two is used to reset buckle one to its position.

[0010] Preferably, the clamping assembly includes a support block rotatably connected to the outer wall of the rotating block, two adjusting bolts rotatably connected to the outer walls of both support blocks, two adjusting plates slidably connected to the inner walls of both support blocks, and the two adjusting plates are threadedly connected to the adjusting bolts. The adjusting bolt has a two-way thread, and the two adjusting plates are connected to the adjusting bolt by a screw drive. When the adjusting bolt is rotated, the two adjusting plates move towards each other or away from each other. A flexible material is fixedly connected to the side of the two adjusting plates that are close to each other to prevent damage to the surface of the display screen when clamping it.

[0011] The present invention has the following beneficial effects: (1) After the unfolding test is completed, the motor is started and the motor drives the lead screw to rotate. At this time, the moving block moves downward and drives the fixed plate to move downward along the slide rail. When it is not moving, the two gears are located in the toothless section of the irregular rack. During the downward movement of the fixed plate, the two gears enter the toothed section of the irregular rack. The fixed plate continues to move and drives the two gears to rotate in opposite directions. Through the application of the above components, the display screen can simulate daily use conditions, fold and bend, and test the heat dissipation of the display screen.

[0012] (2) This invention utilizes the characteristic of the lead screw driving gear one to rotate in the above-mentioned device. When the lead screw rotates, it drives gear two on the lead screw to rotate, causing the rack sliding on the outer wall of the support plate. At this time, the rack drives the L-shaped rotating shaft to rotate through another gear two. When the fixed rod on the L-shaped rotating shaft changes from a state parallel to the fixed plate to a state perpendicular to the fixed plate, the two gears one enter the toothless section of the irregular rack. At this time, the two gears one do not rotate, that is, they do not fold. At this time, the two follower plates are perpendicular to the display screen. When the fixed rod is perpendicular to the fixed plate, the two gears one are still in the toothless section of the irregular rack. Then the fixed plate drives the sleeve to move downward, and the telescopic rod is in a stretched state. After moving downward for a period of time, the fixed rod connects to the sleeve. When the screen is touched, the two gears enter the toothed section of the irregular rack, and the two gears begin to rotate, starting to fold the display screen. As the L-shaped shaft rotates, the protruding rod on the L-shaped shaft and the limiting groove on the support plate change from being perpendicular to each other to being parallel to each other. When the L-shaped shaft moves downward, the protruding rod enters the limiting groove, preventing the L-shaped shaft from rotating. During the folding process of the display screen, the fixing plate drives the sleeve to move downward. The flexible sensors on the two follower plates remain in close contact with the display screen throughout the folding process. Through the application of the above components, the display screen is straightened, simulating daily use conditions. This solves the problem that the inner surface of the display screen cannot be detected by a thermal imager after folding, and the inner surface of the display screen can be detected by a flexible detector.

[0013] (3) This invention utilizes the characteristic of the L-shaped rotating shaft of the above-mentioned equipment. During the transition between the two follower plates in the unfolded and closed states, when the fixed rod and the fixed plate change from a horizontal state to a vertical state, the adjusting rod enters the gentle slope of the protruding block, thereby causing the adjusting rod to contact the first buckle and push the first buckle to rotate around the rotating shaft, thus disengaging the first buckle from the second buckle. The two follower plates change from the closed state to the unfolded state. When the adjusting rod enters the gentle slope of the protruding block, the limiting rod enters the moving groove, which is in an inclined upward sliding state. During the continuous rotation of the L-shaped rotating shaft, as the limiting rod moves along the moving groove, the top block is lifted, causing the first spring to move upward, and the adjusting rod disengages from the protruding block. Since the protruding block exceeds the protrusion by a certain distance, the second spring releases its elasticity. Release a portion of the pressure, causing the adjusting rod to retract and disengage from latch one. As the two follower plates gradually fold along with the display screen, transitioning from an unfolded state to a closed state, until latch one and latch two engage. Before the L-shaped pivot returns to a state where the fixed rod and fixed plate are parallel, the side of the adjusting rod away from latch one first contacts the surface of the connecting plate, and then contacts the outer surface of the sleeve. At this point, both the surface of the connecting plate and the surface of the sleeve are lower than the protruding block. The adjusting rod does not contact latch one at this time, and the two follower plates remain in a closed state until the fixed rod and fixed plate change from a vertical state to a horizontal state. Through the application of the above components, the lack of real-time temperature detection of the display screen during the entire folding process and the obstruction of the display screen by the device during the unfolding process, which affects the detection results, are solved.

[0014] (4) The present invention utilizes the characteristics of the above-mentioned device adjusting plate clamping the display screen. The support block is rotatably connected to the rotating block. When the fixed plate moves, it drives the gear to rotate. During the process of the rotating block rotating in opposite directions, the part clamped by the adjusting plate can remain parallel to the display screen. Through the application of the above components, the breakage of the display screen clamping part caused by rigid connection during the folding process is reduced. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the folding mechanism of the present invention; Figure 5 For the present invention Figure 4A magnified structural diagram of A in the middle; Figure 6 This is a schematic diagram of the folding mechanism of the present invention; Figure 7 This is a schematic diagram of the rotating mechanism structure of the present invention; Figure 8 This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 9 For the present invention Figure 8 A magnified structural diagram of B in the diagram; Figure 10 This is a partial cross-sectional view of the adjustment mechanism of the present invention; Figure 11 For the present invention Figure 10 A magnified structural diagram of C; Figure 12 This is a schematic diagram of the overall structural motion state of the present invention; Figure 13 This is a schematic diagram of the mating structure of the adjusting bolt and the support block of the present invention; Figure 14 This is a schematic diagram of the structure of the first buckle 317 and the second buckle 318 of the present invention. Figure 15 This is a schematic diagram of the movable slot structure of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Folding mechanism; 11. Transmission assembly; 12. Folding assembly; 13. Cabinet; 14. Heat flow meter; 15. Support plate; 16. Thermal imager; 17. Support frame; 18. Motor; 111. Slide rail one; 112. Lead screw; 113. Moving block; 114. Fixed plate; 121. Fixed shaft; 122. Gear one; 123. Irregular rack; 1231. Protrusion; 2. Rotating mechanism; 21. Rotating assembly; 22. Follower assembly; 211. Slide rail two; 212. L-shaped rotating shaft; 2121. Protruding rod; 2122. Limiting groove; 213. Rack; 214. Gear two; 215. Sleeve 2151. Cylinder; 2152. Connecting plate; 2153. Limiting rod; 2154. Protruding block; 221. Fixing rod; 222. Follower plate; 223. Flexible sensor; 224. Torsion spring one; 225. Telescopic rod; 3. Adjustment mechanism; 31. One-way adjustment assembly; 32. Clamping assembly; 311. Support shell; 312. Spring one; 313. Adjusting rod; 314. Spring two; 315. Top block; 3151. Moving groove; 316. Rotating shaft; 317. Buckle one; 318. Buckle two; 319. Torsion spring two; 321. Rotating block; 322. Support block; 323. Adjusting bolt; 324. Adjusting plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1, please refer to Figures 1-6 This invention relates to an OLED screen heat dissipation performance testing device, comprising a cabinet 13 with a working cavity at the top, a heat flow meter 14 disposed on the right side of the cabinet 13, a support plate 15 fixedly connected to the rear inner wall of the working cavity of the cabinet 13, a thermal imager 16 fixedly connected to the front wall of the support plate 15, a support frame 17 fixedly connected to the rear inner wall and bottom inner wall of the working cavity of the cabinet 13, the support frame 17 being located below the support plate 15, and a motor 18 fixedly connected to the bottom wall of the working cavity of the cabinet 13; and further comprising: Folding mechanism 1 is fixedly connected to the front side of support frame 17; folding mechanism 1 is used to fold the display screen. Rotation mechanism 2 is located above folding mechanism 1 and is used to detect the temperature of the inner screen when the display screen is folded. Adjustment mechanism 3 is located on the front side of folding mechanism 1 and is used to adjust the position of rotating mechanism 2; Among them, the heat flow meter 14 is used to regulate the stability of the internal temperature of the cabinet 13, and the thermal imager 16 is used to detect the temperature of the screen when the display screen is not folded, and to detect the screen's heat dissipation capacity.

[0020] The heat flow meter 14 is a ThermoTST TS580B, which converts the heat flow signal into a measurable electrical signal through a sensor by using the quantitative relationship between heat flow and physical quantities, and finally calculates the heat flow density to adjust the temperature; the thermal imager 16 is a PV320LC long-wave infrared thermal imager, which receives the long-wave infrared radiation emitted by the object itself and converts it into a thermal image that can be observed by the human eye. Folding mechanism 1 includes: Transmission assembly 11 is slidably connected to the front side of support frame 17 via a sliding member; The sliding component includes a slide rail 111 fixedly connected to the front side of the support frame 17; Folding component 12 is fixed to the front side of the working cavity of cabinet 13 by fasteners; The fasteners include two fixed shafts 121 fixedly connected to the inner wall of the rear side of the working cavity of the cabinet 13, and the outer walls of the two fixed shafts 121 are rotatably connected to gears 122 through bearings; The transmission component 11 is used to drive the folding component 12 to fold the display screen.

[0021] Rotating mechanism 2 includes: Rotating component 21 is disposed at the bottom of support plate 15 via a movable component; The movable component includes a slide rail 211 fixedly connected to the bottom of the support plate 15, an L-shaped rotating shaft 212 slidably connected to the inner front wall of the support plate 15, and a rack 213 slidably connected to the outer wall of the slide rail 211. Follower component 22 is connected to the horizontal section of L-shaped rotating shaft 212 via a rotating component; The rotating component includes a fixed rod 221 fixedly connected to the horizontal section of the L-shaped rotating shaft 212, and two follower plates 222 are rotatably connected to the outer wall of the fixed rod 221. The rotating component 21 is located below the support plate 15 and is used to drive the follower component 22 to rotate intermittently.

[0022] Adjustment mechanism 3 includes: One-way adjustment component 31 is mounted on the outer wall of L-shaped rotating shaft 212 via a spring component; The spring assembly includes a support shell 311 positioned at the top of the horizontal section of the L-shaped rotating shaft 212. A first spring 312 is fixedly connected to the bottom of the support shell 311, and the bottom end of the first spring 312 is fixedly connected to the top of the horizontal section of the L-shaped rotating shaft 212. An adjusting rod 313 is slidably connected to the inner wall of the support shell 311, and a second spring 314 is sleeved on the outer wall of the adjusting rod 313. One end of the second spring 314 is connected to the inner wall of the support shell 311, and the other end is connected to the side wall of the adjusting rod 313. A top block 315 is fixedly connected to the bottom of the support shell 311 near the vertical section of the L-shaped rotating shaft 212. A moving groove 3151 is formed on the outer wall of the top block 315. Clamping assembly 32 is disposed on the front side of gear 122 via a folding member; The folding component includes two rotating blocks 321 that are fixedly connected to the side wall of gear 122 respectively; the rotating blocks 321 are fixedly connected to the side wall of gear 122 through an integral sleeve, and the two fixed shafts 121 pass through the two gears 122 respectively and are rotatably connected to the sleeve of the rotating blocks 321. Among them, the unidirectional adjustment component 31 adjusts the position of the follower component 22 when the follower component 22 rotates to a certain position; the clamping component 32 adjusts the angle during the folding process of the display screen.

[0023] Example 2, please refer to Figures 4-15The present invention is an OLED screen heat dissipation performance testing device. Based on Example 1, preferably, the transmission component 11 includes a lead screw 112 rotatably connected to the bottom wall of the working cavity of the cabinet 13, and a moving block 113 (with an internal thread matching the lead screw) is helically connected to the outer wall of the lead screw 112. A fixing plate 114 is fixedly connected to the side wall of the moving block 113. The upper side of the lead screw 112 is rotatably connected to the support plate 15, and two vertical sliding grooves are opened on the fixed plate 114. Two fixed shafts 121 are slidably connected to the two sliding grooves respectively, and the output shaft of the motor 18 is fixedly connected to the bottom end of the lead screw 112 through a coupling.

[0024] The folding assembly 12 includes irregularly shaped racks 123 that are fixedly connected to the outer wall of the fixed plate 114, and a protrusion 1231 is fixedly connected to the front side of the irregularly shaped racks 123. Among them, the upper side of the irregular rack 123 is provided with a toothed section, and the lower side is a smooth section. The toothed section can mesh with the two gears 122. When the motor 18 is started, it drives the lead screw 112 to rotate. At this time, the moving block 113 moves downward, causing the fixed plate 114 to move downward along the slide rail 111. When it is not moving, the two gears 122 are located in the toothless section of the irregular rack 123. As the fixed plate 114 moves downward, the two gears 122 enter the toothed section of the irregular rack 123. The fixed plate 114 continues to move, causing the two gears 122 to rotate in opposite directions, so that the clamped display screen can be folded. When the device detects the flexible display screen, it enables the flexible display screen to be folded, simulating the situation during daily use.

[0025] The rotating assembly 21 includes two gears 214 disposed on the lower side of the support plate 15. The gear 214 on the side closer to the thermal imager 16 is fixedly connected to the outer wall of the vertical section of the L-shaped rotating shaft 212, and the gear 214 on the side away from the thermal imager 16 is fixedly connected to the non-threaded section of the outer wall of the lead screw 112. A sleeve 215 is rotatably connected to the outer wall of the vertical section of the L-shaped rotating shaft 212. A connecting plate 2151 is fixedly connected to the outer wall of the sleeve 215 near the horizontal section of the L-shaped rotating shaft 212. A limit rod 2152 is fixedly connected to the outside of the sleeve 215. A protruding block 2153 is fixedly connected to the outer wall of the sleeve. The two sides of the protruding block 2153 are provided with gentle slopes, and the cross-section is similar to an isosceles trapezoid. The protruding block 2153 and the limit rod 2152 are both located below the connecting plate 2151. Among them, gear 214 is always meshed with rack 213 on slide rail 211, sleeve 215 is located below gear 214, and L-shaped rotating shaft 212 is provided with protruding rod 2121 on the part that passes through the support plate 15. The support plate 15 is provided with matching limiting groove 2122 to prevent L-shaped rotating shaft 212 from rotating under special circumstances.

[0026] The follower assembly 22 includes flexible sensors 223 that are fixedly connected to the outer wall of the follower plate 222, and a torsion spring 224 is sleeved on the outer wall of the fixing rod 221; the outer wall of the sleeve 215 is fixedly connected to two telescopic rods 225 through the connecting plate 2151, and both telescopic rods 225 are fixedly connected to the protrusion 1231 on the front side of the irregular rack 123. Among them, the two ends of the torsion spring 224 are fixedly connected to the two follower plates 222 respectively, and the two telescopic rods 225 are located below the sleeve 215; The flexible sensor 223 belongs to the AHT3000 flexible temperature sensor. The flexible temperature sensor converts the temperature change of the environment or target into a measurable electrical or optical signal, and then calculates the specific temperature value through the signal processing module. When the lead screw 112 rotates, it drives the second gear 214 on the lead screw 112 to rotate, causing the rack 213, which is slidably connected to the bottom of the support plate 15, to slide along the second slide rail 211. At this time, the rack 213 drives the L-shaped rotating shaft 212 to rotate through another gear 214. When the fixed rod 221 on the horizontal section of the L-shaped rotating shaft 212 changes from a state parallel to the fixed plate 114 to a state perpendicular to the fixed plate 114, the two gears 122 enter the toothless section of the irregular rack 123. At this time, the two gears 122 do not rotate, that is, they do not fold. At this time, the two follower plates 222 are perpendicular to the display screen. When the fixed rod 221 is perpendicular to the fixed plate 114, the two gears 122 are still in the toothless section of the irregular rack 123. Then the fixed plate 114 drives the sleeve 215 to continue to move downward, and the telescopic rod 225 is in a stretched state. After moving downwards for a period of time, when the fixed rod 221 contacts the screen, the two gears 122 enter the toothed section of the irregular rack 123, and the two gears 122 begin to rotate, starting to fold the display screen. Due to the rotation of the L-shaped rotating shaft 212, the protruding rod 2121 on the L-shaped rotating shaft 212 and the limiting groove 2122 on the support plate 15 change from being perpendicular to each other to being parallel to each other. When the L-shaped rotating shaft 212 moves downwards, the protruding rod 2121 enters the limiting groove 2122, so that the L-shaped rotating shaft 212 does not rotate. During the folding process of the display screen, the fixed plate 114 drives the sleeve 215 to move downwards. The two follower plates 222 are always in close contact with the display screen during the folding process. During the folding process of the display screen, the display screen always remains taut, and the temperature change of the display screen is detected, so that the inner surface can be detected during the folding process of the display screen.

[0027] The one-way adjustment assembly 31 includes a rotating shaft 316 fixedly connected to the inner wall of the follower plate 222 on the left side, a buckle 317 rotatably connected to the outer wall of the rotating shaft 316, a buckle 318 fixedly connected to the inner wall of the follower plate 222 on the right side, and a torsion spring 319 sleeved on the outer wall of the rotating shaft 316. Among them, buckle 1 317 and buckle 2 318 are compatible. Both buckle 1 317 and buckle 2 318 are made of hard plastic. Torsion spring 2 319 is used to reset buckle 1 317. During the transition between the two follower plates 222 in the unfolded and closed states, when the fixing rod 221 and the fixing plate 114 change from a horizontal to a vertical state, the end of the adjusting rod 313 near the connecting plate 2151 enters the slope of the protruding block 2153, thereby pushing the other end of the adjusting rod 313 to contact the first buckle 317, pushing the first buckle 317 to rotate around the rotating shaft 316, thus disengaging the first buckle 317 from the second buckle 318, and the two follower plates 222 change from the closed state to the unfolded state. When the adjusting rod 313 enters the slope of the protruding block 2153, the limiting rod 2152 enters the moving groove 3151, which is in an inclined upward sliding state. During the continuous rotation of the L-shaped rotating shaft 212, as the limiting rod 2152 moves along the moving groove 3151, the top block 315 rises, causing the first spring 312 to move upward, and the adjusting rod 313 disengages from the protruding block 215. 3. Since the protruding block 2153 extends beyond the protruding block 1231 by a certain distance, the spring force of the second spring 314 is partially released, causing the adjusting rod 313 to retract and disengage from the first latch 317. As the two follower plates 222 gradually fold with the display screen, they change from an unfolded state to a closed state until the first latch 317 and the second latch 318 are engaged. Before the L-shaped pivot 212 returns to the state where the fixed rod 221 is parallel to the fixed plate 114, the side of the adjusting rod 313 away from the first latch 317 first contacts the surface of the connecting plate 2151, and then contacts the outer surface of the sleeve 215. At this time, the surfaces of the connecting plate 2151 and the sleeve 215 are lower than the protruding block 2153. At this time, the adjusting rod 313 does not contact the first latch 317, and the two follower plates 222 are always in the closed state. At this time, the heat dissipation of the display screen during the folding process can be detected in real time, reducing the problem of not being detected for part of the time during the folding process.

[0028] The clamping assembly 32 includes a support block 322 rotatably connected to the outer wall of the rotating block 321. Two adjusting bolts 323 are rotatably connected to the outer walls of the two support blocks 322. Two adjusting plates 324 are slidably connected to the inner walls of the two support blocks 322. The two adjusting plates 324 are threadedly connected to the adjusting bolts 323. The adjusting bolt 323 has a bidirectional thread and passes through the upper and lower side walls of the support block 322. The upper and lower surfaces of the lower side wall of the support block 322 are provided with limit plates, which are fixedly connected to the adjusting bolt 323 so that the adjusting bolt can only rotate and cannot move up and down. The two adjusting plates 324 have threaded grooves inside that match the bidirectional thread of the adjusting bolt. The adjusting plates and the adjusting bolt are connected by a screw drive. When the adjusting bolt 323 is rotated, the two adjusting plates 324 located on the bidirectional thread move towards each other or away from each other. The side of the two adjusting plates 324 that are close to each other is fixedly connected with a flexible material to prevent damage to the surface of the display screen when clamping the display screen. Rotate the adjusting bolt 323 to move the adjusting plate 324 in opposite directions, increasing the distance between the two adjusting plates 324. Place the display screen in the screen, then rotate the adjusting bolt 323 in the opposite direction to move the two adjusting plates 324 in opposite directions, clamping the display screen.

[0029] A specific application of this embodiment is as follows: When in use, the heat flow meter 14 is started to control the temperature inside the cabinet 13. The adjusting bolt 323 is rotated to move the adjusting plate 324 in opposite directions, increasing the distance between the two adjusting plates 324. The display screen is placed in, and the adjusting bolt 323 is rotated in the opposite direction to move the two adjusting plates 324 in opposite directions, clamping the display screen. The cabinet door is closed, and the display screen unfolded status is detected. The thermal imager 16 detects the screen. After the inspection is completed, the motor 18 is started. The motor 18 drives the lead screw 112 to rotate. At this time, the moving block 113 moves downward, driving the fixed plate 114 to move downward along the slide rail 111. When it is not moving, the two gears 122 are located in the toothless section of the irregular rack 123. During the downward movement of the fixed plate 114, the two gears 122 enter the toothed section of the irregular rack 123. The fixed plate 114 continues to move, driving the two gears 122 to rotate in opposite directions, so that the clamped display screen can be folded. When the device is inspecting the flexible display screen, it enables the flexible display screen to be folded, simulating the situation during daily use. Utilizing the characteristic of the aforementioned device where the lead screw 112 drives the first gear 122 to rotate, when the lead screw 112 rotates, it drives the second gear 214 on the lead screw 112 to rotate, causing the rack 213, which is slidably connected to the bottom of the support plate 15, to slide. At this time, the rack 213 drives the L-shaped rotating shaft 212 to rotate through another second gear 214. When the fixed rod 221 on the L-shaped rotating shaft 212 changes from a state parallel to the fixed plate 114 to a state perpendicular to the fixed plate 114, the two first gears 122 enter the toothless section of the irregular rack 123. At this time, the two first gears 122 do not rotate, that is, the screen does not fold. At this time, the two follower plates 222 are perpendicular to the display screen. When the fixed rod 221 is perpendicular to the fixed plate 114, the two first gears 122 are still in the toothless section with the irregular rack 123. Subsequently, the fixed plate 114 drives the sleeve 215 to move downward, and the telescopic rod 225 is in a stretched state. After moving downwards for a period of time, when the fixed rod 221 contacts the screen, the two gears 122 enter the toothed section of the irregular rack 123, and the two gears 122 begin to rotate, starting to fold the display screen. Due to the rotation of the L-shaped rotating shaft 212, the protruding rod 2121 on the L-shaped rotating shaft 212 and the limiting groove 2122 on the support plate 15 change from being perpendicular to each other to being parallel to each other. When the L-shaped rotating shaft 212 moves downwards, the protruding rod 2121 enters the limiting groove 2122, so that the L-shaped rotating shaft 212 does not rotate. During the folding process of the display screen, the fixed plate 114 drives the sleeve 215 to move downwards. The flexible sensors 223 on the two follower plates 222 are always in close contact with the display screen during the folding process. During the folding process of the display screen, the display screen always remains taut and detects the temperature change of the display screen, so that the inner surface can be detected during the folding process of the display screen. Utilizing the rotational characteristics of the L-shaped rotating shaft 212 in the aforementioned equipment, during the transition between the two follower plates 222 in the unfolded and closed states, when the fixing rod 221 and the fixing plate 114 change from a horizontal to a vertical state, the adjusting rod 313 enters the gentle slope of the protruding block 2153, thereby causing the adjusting rod 313 to contact the first latch 317, pushing the first latch 317 to rotate around the rotating shaft 316, thus disengaging the first latch 317 from the second latch 318, and the two follower plates 222 change from the closed state to the unfolded state. When the adjusting rod 313 enters the gentle slope of the protruding block 2153, the limiting rod 2152 enters the moving groove 3151, which is in an inclined upward sliding state. During the continuous rotation of the L-shaped rotating shaft 212, as the limiting rod 2152 moves along the moving groove 3151, the top block 315 rises, causing the first spring 312 to move upward, and the adjusting rod 313 disengages from the protruding block 2153. Because the protruding block 2153 exceeds... After a certain distance from the protrusion 1231, the spring 2 314 releases part of its elasticity, causing the adjusting rod 313 to retract and disengage from the latch 1 317. As the two follower plates 222 gradually fold with the display screen, they change from an unfolded state to a closed state until the latch 1 317 and the latch 2 318 are engaged. Before the L-shaped pivot 212 returns to the parallel state between the fixing rod 221 and the fixing plate 114, the side of the adjusting rod 313 away from the latch 1 317 first contacts the surface of the connecting plate 2151, and then contacts the outer surface of the sleeve 215. At this time, the surfaces of the connecting plate 2151 and the sleeve 215 are lower than the protrusion 2153. At this time, the adjusting rod 313 does not contact the latch 1 317, and the two follower plates 222 remain in the closed state until the fixing rod 221 and the fixing plate 114 change from a vertical state to a horizontal state. This allows for real-time detection of heat dissipation during the display screen folding process, reducing the problem of not being detected for part of the folding process. Taking advantage of the feature of the adjustment plate 324 clamping the display screen, the support block 322 is rotatably connected to the rotating block 321. When the fixed plate 114 moves, it drives the gear 122 to rotate. During the opposite rotation of the rotating block 321, the part clamped by the adjustment plate 324 can remain parallel to the display screen, reducing the risk of breakage of the display screen clamping part due to rigid connection during folding.

[0030] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An OLED screen heat dissipation performance testing device, comprising a cabinet (13) with a working cavity at the top, a heat flow meter (14) is provided on the right side of the cabinet (13) with a working cavity at the top, a support plate (15) is fixedly connected to the rear inner wall of the working cavity of the cabinet (13), a thermal imager (16) is fixedly connected to the front wall of the support plate (15), a support frame (17) is fixedly connected to the rear inner wall and the bottom inner wall of the working cavity of the cabinet (13), the support frame (17) is located below the support plate (15), and a motor (18) is fixedly connected to the bottom wall of the working cavity of the cabinet (13). Its features are, Also includes: A folding mechanism (1) is fixedly connected to the front side of the support frame (17); the folding mechanism (1) is used to fold the display screen. A rotating mechanism (2) is disposed above the folding mechanism (1), and the rotating mechanism (2) is used to detect the temperature of the inner screen when the display screen is folded. Adjustment mechanism (3), which is located on the front side of folding mechanism (1), is used to adjust the position of rotating mechanism (2); Among them, the heat flow meter (14) is used to regulate the stability of the internal temperature of the cabinet (13), and the thermal imager (16) is used to detect the temperature of the screen when the display screen is not folded and to detect the heat dissipation capacity of the screen. The folding mechanism (1) includes: The transmission assembly (11) is slidably connected to the front side of the support frame (17) via a sliding member; The sliding component includes a slide rail (111) fixedly connected to the front side of the support frame (17). Folding assembly (12), which is connected to the front side of the working cavity of the cabinet (13) by means of a fastener; The fasteners include two fixed shafts (121) fixedly connected to the inner wall of the rear side of the working cavity of the cabinet (13), and a gear (122) is rotatably connected to the outer wall of each of the two fixed shafts (121). The transmission component (11) is used to drive the folding component (12) to fold the display screen.

2. The OLED screen heat dissipation performance testing device according to claim 1, characterized in that: The transmission assembly (11) includes a lead screw (112) rotatably connected to the bottom wall of the working chamber of the cabinet (13), a moving block (113) is helically connected to the outer wall of the lead screw (112), and a fixing plate (114) is fixedly connected to the side wall of the moving block (113). The upper side of the lead screw (112) is rotatably connected to the support plate (15), and two vertical grooves are opened on the fixed plate (114). The two fixed shafts (121) are slidably connected to the two grooves respectively, and the output shaft of the motor (18) is fixedly connected to the lead screw (112) through a coupling.

3. The OLED screen heat dissipation performance testing device according to claim 2, characterized in that: The folding assembly (12) includes a shaped toothed rack (123) fixedly connected to the outer wall of the fixing plate (114), and a protrusion (1231) is fixedly connected to the front side of the shaped toothed rack (123). Among them, the upper side of the irregular rack (123) is provided with a toothed section, and the lower side is a smooth section. The toothed section can mesh with two gears (122).

4. The OLED screen heat dissipation performance testing device according to claim 1, characterized in that: The rotating mechanism (2) includes: A rotating assembly (21) is fixedly connected to the bottom of a support plate (15) via a movable component; The movable component includes a slide rail 2 (211) fixedly connected to the bottom of the support plate (15), an L-shaped rotating shaft (212) slidably connected to the front side of the support plate (15), a protruding rod (2121) fixedly connected to the top of the L-shaped rotating shaft (212), a limit groove (2122) opened on the outer wall of the support plate (15), and a rack (213) slidably connected to the outer wall of the slide rail 2 (211). Follower component (22), which is connected to the outer wall of the horizontal section of the L-shaped rotating shaft (212) via a rotating component; The rotating component includes a fixed rod (221) fixedly connected to the horizontal section of the L-shaped rotating shaft (212), and two follower plates (222) are rotatably connected to the outer wall of the fixed rod (221). The rotating component (21) is located below the support plate (15) and is used to drive the follower component (22) to rotate intermittently.

5. The OLED screen heat dissipation performance testing device according to claim 4, characterized in that: The adjustment mechanism (3) includes: A one-way adjustment component (31) is mounted on the outer wall of the L-shaped rotating shaft (212) via a spring element; The spring component includes a support shell (311) disposed at the top of the horizontal section of the L-shaped rotating shaft (212). A spring (312) is fixedly connected to the bottom of the support shell (311). An adjusting rod (313) is slidably connected to the inner wall of the support shell (311). A spring (314) is sleeved on the outer wall of the adjusting rod (313). A top block (315) is fixedly connected to the bottom of the support shell (311). A moving groove (3151) is opened on the outer wall of the top block (315). A clamping assembly (32) is provided on the front side of gear one (122) via a folding member; The folding component includes two rotating blocks (321) that are respectively fixedly connected to the side wall of gear one (122). Among them, the unidirectional adjustment component (31) adjusts the position of the follower component (22) when the follower component (22) rotates to a certain position; the clamping component (32) adjusts the angle during the folding process of the display screen.

6. The OLED screen heat dissipation performance testing device according to claim 4, characterized in that: The rotating assembly (21) includes two gears (214) disposed on the lower side of the support plate (15). The gear (214) on the side closer to the thermal imager (16) is fixedly connected to the outer wall of the vertical section of the L-shaped rotating shaft (212), and the gear (214) on the side away from the thermal imager (16) is fixedly connected to the non-threaded section of the outer wall of the lead screw (112). A sleeve (215) is rotatably connected to the outer wall of the vertical section of the L-shaped rotating shaft (212). A connecting plate (2151) is fixedly connected to the outer wall of the sleeve (215). A limit rod (2152) is fixedly connected to the outer wall of the sleeve (215). A protrusion (2153) is fixedly connected to the outer wall of the sleeve (215). Among them, gear two (214) is always meshed with rack (213) on slide rail two (211), sleeve (215) is located below gear two (214), and protruding rod (2121) is provided on the part of L-shaped shaft (212) that passes through the support plate (15) to prevent L-shaped shaft (212) from rotating under special circumstances.

7. The OLED screen heat dissipation performance testing device according to claim 6, characterized in that: The follower assembly (22) includes flexible sensors (223) fixedly connected to the outer wall of the follower plate (222), and a torsion spring (224) is sleeved on the outer wall of the fixing rod (221); the outer wall of the sleeve (215) is fixedly connected to two telescopic rods (225) through the connecting plate (2151), and both telescopic rods (225) are fixedly connected to the protrusion (1231) on the front side of the irregular rack (123); Among them, the two ends of the torsion spring (224) are fixedly connected to the two follower plates (222) respectively, and the two telescopic rods (225) are located below the sleeve (215).

8. The OLED screen heat dissipation performance testing device according to claim 5, characterized in that: The one-way adjustment component (31) includes a rotating shaft (316) fixedly connected to the inner wall of the follower plate (222) on the left side. The outer wall of the rotating shaft (316) is rotatably connected to a buckle one (317). The inner wall of the follower plate (222) on the right side is fixedly connected to a buckle two (318). The outer wall of the rotating shaft (316) is fitted with a torsion spring two (319). Among them, buckle one (317) is compatible with buckle two (318). Both buckle one (317) and buckle two (318) are made of hard plastic material. Torsion spring two (319) is used to reset the position of buckle one (317).

9. The OLED screen heat dissipation performance testing device according to claim 5, characterized in that: The clamping assembly (32) includes a support block (322) rotatably connected to the outer wall of the rotating block (321), and two adjusting bolts (323) rotatably connected to the outer walls of the two support blocks (322), and two adjusting plates (324) slidably connected to the inner walls of the two support blocks (322). The adjusting bolt (323) is provided with a two-way thread, and the two adjusting plates (324) are connected to the adjusting bolt (323) by a screw drive. When the adjusting bolt (323) is rotated, the two adjusting plates (324) move towards each other or away from each other. The side of the two adjusting plates (324) that are close to each other is fixedly connected with a flexible material to prevent damage to the surface of the display screen when clamping the display screen.

Images