LED lamp bead full-brightness state aging test device

Abstract

The application discloses a kind of LED lamp pearl full bright state aging test device, it is related to aging test technical field, including the clamping assembly of the feature that setting is loosened in the tray using the temperature rise of lamp pearl body after aging, the compensation component of the moment that setting is switched current route in the tray when clamping assembly loosens lamp pearl body and the defective product take-out component of setting in aging machine.The application utilizes the feature that resistance increases, temperature rises after lamp pearl aging, and adaptively triggers the certain group of clamping assembly of the location of defective product, so that defective product automatically falls off, and compensates the resistance on corresponding branch at the moment when clamping assembly loosens, to maintain the stability of entire circuit current as far as possible, significantly reduces the risk that the current stability of lamp pearl body on the rest branch is destroyed, helps to improve the accuracy of lamp pearl body detection result.

Description

Technical Field

[0001] This invention relates to the field of aging test technology, specifically to an aging test device for LED beads in full-brightness state. Background Technology

[0002] LED chips may introduce potential defects during manufacturing, leading to early failures such as light decay, color shift, or dead LEDs in the early stages of use. Therefore, they must undergo aging tests before leaving the factory. The basic principle of aging testing is to continuously illuminate the LED chips for a period of time under rated or slightly higher current conditions, applying accelerated stress to expose potential internal defects prematurely. Full-brightness aging is the most basic mode—all chips are simultaneously illuminated continuously at maximum rated current, simulating the long-term operating conditions of a luminaire under extreme conditions. By comparing the photoelectric parameters before and after aging, the quality of the chips can be determined.

[0003] For example, the LED lamp bead full-brightness aging test device disclosed in CN119148011B relates to the field of lamp bead aging test technology. The aging test device tests LED lamp beads. The test device includes a main body mechanism, an aging test mechanism, a clamping mechanism, and a dispensing mechanism. The main body mechanism is connected to the aging test mechanism, the clamping mechanism, and the dispensing mechanism. The aging test mechanism is connected to the clamping mechanism. The main body mechanism includes a support base, a top plate, and a side baffle. The support base is placed on the ground. The support base and the top plate are fastened together by the side baffle. The support base is connected to the aging test mechanism and the dispensing mechanism. The aging test mechanism includes a test base, a test insertion platform, and a lifting hydraulic cylinder. The test base and the test insertion platform are connected by the lifting hydraulic cylinder. Several test insertion platforms are provided and connected along the test base.

[0004] While existing equipment can remove defective products and separate them from qualified products, the following problems still exist: 1. Existing technologies typically connect multiple groups of LEDs in series or parallel, powered by a single power source. In a series connection, once a defective LED is removed, the circuit is broken, and a new LED must be installed to resume testing. In a parallel connection, after a defective LED is removed, the current in the original branch is redistributed to the remaining branches, causing the remaining LEDs to withstand a larger current for an extended period, accelerating their aging process and thus distorting the test data. 2. The aging process of LED chips not only requires operation at the maximum rated current, but also typically needs to simulate complex working conditions in a high-temperature environment. If a suction method is used when rejecting defective products, it will severely disrupt the high-temperature environment inside the chamber, affecting the consistency of the test conditions and aging results of the remaining LED chips.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing aging test device for LED beads in full-brightness state. Summary of the Invention

[0006] The present invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different solution. Specifically, the present invention aims to provide an aging test device for LED beads in full-brightness state, thereby solving the problem of data distortion in the parallel structure mentioned in the background art after removing defective products.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an aging test device for LED beads in full-brightness state, comprising an aging machine and a tray fixed inside the aging machine, and further comprising: The LED bead body is inserted into the tray; The device includes a clamping component that adaptively releases the LED chip body by utilizing the temperature rise characteristic of the LED chip body after aging, a compensation component that adaptively switches the current path the moment the clamping component releases the LED chip body, and a defective product removal component installed in the aging machine. The clamping assembly includes a movable clamping plate movably mounted on the tray via a trapezoidal slide rail, a bimetallic strip movably mounted inside the tray via a trapezoidal slide rail, a push rod fixed at the center of one side of the bimetallic strip, a vertical rod fixed on the tray, and a flap hinged in the middle of the vertical rod. The compensation component includes a square frame with both ends fixed to the two sides of the movable clamping plate, a sub-bracket fixed to the tray, and a conductive rod movably inserted inside the sub-bracket. The defective product removal assembly includes a gathering slide plate fixed inside the aging machine and located directly below the tray, a sealing plate movably disposed below the gathering slide plate, and a gravity sensor embedded in the middle of the sealing plate.

[0008] Preferably, the clamping assembly further includes a fixed-point clamping plate fixed to the tray; The top of the fixed clamping plate and the top of one end of the movable clamping plate are both set as smooth inclined surfaces; The pins of the lamp bead body are slidably inserted between the fixed clamping plate and the movable clamping plate; The surface of the tray is provided with a through square groove, and the size of the square groove is larger than the size of the lamp bead body. The lamp bead body moves through the square groove.

[0009] Preferably, the clamping assembly, the compensation assembly, and the lamp bead body are each provided with several sets of the same number; Each set of movable clamping plates, fixed clamping plates and lamp bodies are connected in series; Each set of movable clamps, frames and conductive rods are connected in series; Several sets of clamping components, compensation components and lamp bodies are connected in parallel.

[0010] Preferably, the cross-section of the movable clamp is set to an "H" shape; One end of the movable clamp is in close contact with the lamp bead body; A telescopic heat-conducting component is fixed to the bottom of one end of the movable clamping plate; The other end of the telescopic heat-conducting component moves through the inside of the tray and is fixedly connected to the center of the other side of the bimetallic sheet. The four corners of the bimetallic sheet are longitudinally slidably inserted into the tray via a columnar slider; The other end of the movable clamp is symmetrically fixed with a second spring, and the other end of the second spring is fixedly connected to the inner wall of the support plate.

[0011] Preferably, the upper surface of the pallet is fixed with several sets of arc-shaped rails, and every two sets of arc-shaped rails are symmetrically distributed. The push rod is L-shaped, and the bottom of the push rod moves horizontally inside the tray via a trapezoidal slide rail; The upper end of the push rod is provided with a vertical groove, and a long rod is slidably inserted through the inside of the vertical groove; The two ends of the long rod move through the interior of the arc-shaped rail; The center of the arc-shaped rail coincides with the center of the hinge point between the flap and the upright.

[0012] Preferably, tension springs are movably sleeved at both ends of the long rod; The other end of the tension spring is movably sleeved on both sides of the flap; The tension spring has a greater elastic force than the second spring. The top of the flip plate is rotatably equipped with a roller.

[0013] Preferably, the compensation assembly further includes a first spring fixed between the conductive rod and the inner wall of the bracket; A conductive contact is provided at the middle of one end of the frame, and the conductive contact is horizontally aligned with the conductive rod.

[0014] Preferably, the defective product removal assembly further includes an upward-opening door disposed on the side of the aging machine; An outlet groove is provided through the middle of one end of the gathering slide plate; The upper surface of the gathering slide plate is set as a smooth slope, and the outlet groove is located at the lowest point; The surface of the gathering slide plate is polished.

[0015] Preferably, the aging machine has a temporary storage cavity located below the gathering slide plate; The sealing plate is located directly below the outlet groove, and the two are tightly attached to each other; The gravity sensor is aligned with the outlet slot; The temporary storage cavity is aligned with the outlet slot.

[0016] Preferably, the aging machine is equipped with an electric push rod inside; The piston end of the electric push rod is fixedly connected to one side of the sealing plate; The other side of the sealing plate is chamfered and polished.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when the temperature rises due to the aging of the LED beads, the bimetallic strip is heated and bent, pushing the push rod to move. Under the combined limiting action of the arc-shaped rail and the push rod, the long rod is forced to move. After the temperature rises to a certain level, the bimetallic strip bends significantly. After the long rod moves to a certain height, the rebound force of the tension spring suddenly straightens the flap. The movable clamp plate, which is no longer obstructed, is pulled back by the second spring, allowing the aged LED bead to fall naturally. At the same time as the movable clamp plate returns to its position, the conductive contact in the frame makes close contact with the conductive rod. The current that originally passed through the LED bead in the branch switches to pass through the conductive rod, which is equivalent to quickly compensating for a branch that was suddenly disconnected. The whole process is very fast. There will be instantaneous fluctuations in the current in each branch, but for long-term aging tests, the impact on the test results of all LED beads is negligible. This invention utilizes the characteristics of increased resistance and temperature rise after LED beads age to adaptively trigger a set of clamping components at the location of the defective product, causing the defective product to fall off automatically. At the moment the clamping components are released, the resistance of the corresponding branch is compensated to maintain the stability of the current in the entire circuit as much as possible. This significantly reduces the risk of disrupting the current stability of the LED beads in other branches and helps to improve the accuracy of the LED bead detection results.

[0018] 2. This invention utilizes the converging effect of the gathering slide plate to accumulate defective products onto the sealing plate when they fall naturally. Once a certain number of defective products are collected, their weight increases, triggering a gravity sensor and an electric push rod. As the sealing plate retracts into the aging machine, the top door closes first, and then the outlet slot of the gathering slide plate is exposed. The small amount of high-temperature gas in the aging machine, as well as the odor emitted by some of the LED body's encapsulated parts after being heated, does not directly leak out of the aging machine. Instead, it enters the temporary storage chamber along with the defective products. Only after the sealing plate quickly re-seals the outlet slot will it push open the top door, allowing the small amount of high-temperature gas and odor to escape. Workers can then remove the defective products after the gas dissipates. In this way, the high-temperature gas in the aging machine does not directly convect with the outside air, resulting in minimal loss of high-temperature gas and significantly reducing damage to the internal environment of the aging machine. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention.

[0020] Figure 2 This is a cross-sectional structural diagram of the aging machine of the present invention.

[0021] Figure 3 This is a partial structural diagram of the present invention.

[0022] Figure 4 This is a schematic diagram of the support structure of the present invention.

[0023] Figure 5 This is a partial side view of the structure of the present invention.

[0024] Figure 6 This is a front view of the structure in the initial state of the present invention.

[0025] Figure 7 This is a front view schematic diagram of the structure of the present invention in the relaxed clamping state.

[0026] Figure 8 This is a partial cross-sectional side view of the present invention.

[0027] Figure 9 This is a schematic diagram of the No. 2 spring structure of the present invention.

[0028] Figure 10 This is a schematic diagram of the conductive rod structure of the present invention.

[0029] Figure 11 This is a schematic diagram of the convergence slide structure of the present invention.

[0030] Figure 12 This is a schematic diagram of the sealing plate structure of the present invention.

[0031] Figure 13 This is a schematic diagram of the circuit connection method of the present invention.

[0032] In the diagram: 1. Aging machine; 2. Flip-up door; 3. Tray; 4. Temporary storage chamber; 5. LED bead body; 6. Fixed clamping plate; 7. Movable clamping plate; 8. Square frame; 9. Sub-bracket; 10. Flip plate; 11. Bimetallic strip; 12. Telescopic heat-conducting component; 13. Push rod; 14. Arc rail; 15. Tension spring; 16. Roller; 17. Upright pole; 18. Long rod; 19. Conductive rod; 20. Spring No. 1; 21. Spring No. 2; 22. Gathering slide plate; 23. Sealing plate; 24. Gravity sensor; 25. Electric push rod. Detailed Implementation

[0033] 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.

[0034] Please see Figures 1 to 13The present invention provides a technical solution: an aging test device for LED beads in full-brightness state, comprising an aging machine 1 and a tray 3 fixed inside the aging machine 1, and further comprising: The LED body 5 is inserted into the tray 3; The tray 3 is equipped with a clamping component that adaptively releases the lamp bead body 5 by utilizing the temperature rise characteristic after the lamp bead body 5 ages; a compensation component that adaptively switches the current path the moment the clamping component releases the lamp bead body 5; and a defective product removal component installed in the aging machine 1. In its implementation, the aging machine 1 consists of a chassis, power supply equipment, temperature control system, humidity control system, central processing unit, alarm system, and other components. The aging machine 1 provides the maximum rated current and high-temperature environment for the aging test of the LED chip body 5 to simulate complex working conditions and accelerate the aging speed of the LED chip body 5. The specific components, operating methods, and working principles of the aging machine 1 can be found in existing mature technologies, and will not be elaborated upon here. It is important to note that because electricity and high temperatures are involved, all components in the aging machine 1 require safety measures. For example, each component needs to be made of high-temperature resistant materials. Components that do not require electrical connection must be made of insulating materials, such as the push rod 13 and roller 16. Components that do require electrical connection, except for the internal wiring, also need to use insulating materials.

[0035] The clamping assembly includes a movable clamping plate 7 that is movably mounted on the pallet 3 via a trapezoidal slide rail, a bimetallic strip 11 that is movably mounted inside the pallet 3 via a trapezoidal slide rail, a push rod 13 fixed at the center of one side of the bimetallic strip 11, a vertical rod 17 fixed on the pallet 3, and a flap 10 hinged in the middle of the vertical rod 17. The compensation component includes a square frame 8 with both ends fixed to the two sides of the movable clamping plate 7, a sub-bracket 9 fixed on the support plate 3, and a conductive rod 19 movably inserted into the sub-bracket 9. The defective product removal assembly includes a gathering slide plate 22 fixed inside the aging machine 1 and located directly below the tray 3, a sealing plate 23 movably disposed below the gathering slide plate 22, and a gravity sensor 24 embedded in the middle of the sealing plate 23.

[0036] The clamping assembly also includes a fixed clamping plate 6 fixed on the tray 3; The top of the fixed clamping plate 6 and the top of one end of the movable clamping plate 7 are both set as smooth slopes; The pins of the lamp body 5 are slidably inserted between the fixed clamping plate 6 and the movable clamping plate 7; A square groove is formed through the surface of the tray 3, and the size of the square groove is larger than the size of the lamp bead body 5; The LED body 5 moves through the square slot.

[0037] In specific implementation, as shown in the appendix Figure 6 and attached Figure 7 As shown, the pins of the lamp body 5 are the key parts used to connect the circuit. The inclined tops of the fixed clamping plate 6 and the movable clamping plate 7 facilitate the insertion of the pins of the lamp body 5. When the lamp body 5 is inserted, the movable clamping plate 7 can be pushed away from the fixed clamping plate 6. The reverse pushing force of the roller 16 on the upright rod 17 clamps the lamp body 5. When the movable clamping plate 7 completely releases the lamp body 5, the lamp body 5 falls naturally from the square groove onto the gathering slide plate 22 under the influence of gravity. Not only is the size of the square groove larger than the size of the lamp body 5, but the distance between the movable clamping plate 7 and the fixed clamping plate 6 when the lamp body 5 is released is also significantly larger than the size of the lamp body 5, to ensure that the lamp body 5 will not get stuck between the movable clamping plate 7 and the fixed clamping plate 6.

[0038] The clamping assembly, the compensation assembly, and the lamp bead body 5 are all provided with several sets of the same number; Each set of movable clamping plate 7, fixed clamping plate 6 and lamp body 5 are connected in series; Each set of movable clamps 7, square frames 8 and conductive rods 19 are connected in series; Several sets of clamping components, compensation components and lamp bead bodies 5 are connected in parallel.

[0039] In specific implementation, as shown in the appendix Figure 3As shown in the attached push rod 13, the power supply voltage distributes the current to each major branch. Each set of clamping components, compensation components, and lamp body 5 is located on the same major branch, and the current on each major branch is balanced. Each major branch is further divided into two parallel minor branches. One set of movable clamping plates 7, one set of fixed clamping plates 6, and one set of lamp body 5 are connected in series on one minor branch. At the same time, one set of movable clamping plates 7, one set of squares 8, and one set of conductive rods 19 are connected in series on another minor branch. S1, S2, and S3 marked in the attached push rod 13 can be regarded as several sets of conductive rods 19, and L1, L2, and L3 can be regarded as several sets of lamp body 5. Simply put, when a set of lamp body 5 is disconnected from the circuit, the corresponding set of conductive rods 19 will be connected instantaneously, so that the current on the major branch at that point switches from passing through the lamp body 5 to passing through the conductive rods 19, thus not affecting the current stability of other normal major branches. Note: Although the switching circuit is very fast, there will still be some instantaneous current changes. This is because both mechanical and electrical structures require reaction and operation time, making it difficult to achieve complete current stability. However, the instantaneous current fluctuations have a very weak impact on the aging process of the remaining normal LED bodies 5 and can be completely ignored. It should also be noted that the wiring on the main branch directly passes into the interior of the movable clamp 7 and is divided into two smaller branches inside the movable clamp 7. Conductive sheets are embedded inside the movable clamp 7, the fixed clamp 6, and the frame 8. The conductive sheets of the movable clamp 7 and the fixed clamp 6 are in direct contact with the pins of the LED body 5. The wires of one set of smaller branches are connected in series with the conductive sheets of the movable clamp 7 and the fixed clamp 6, while the wires of the other set of smaller branches are connected in series with the conductive sheets in the frame 8 and the conductive contacts of the frame 8. For specific electrical connection wiring methods, please refer to existing mature technologies. This invention is only shown in simple illustrations and descriptions here.

[0040] The cross-section of the movable clamp 7 is set in an "H" shape; One end of the movable clamp 7 is in close contact with the lamp bead body 5; A telescopic heat-conducting component 12 is fixed to the bottom of one end of the movable clamp 7; The other end of the telescopic heat-conducting component 12 moves through the inside of the tray 3 and is fixedly connected to the center of the other side of the bimetallic sheet 11. In specific implementation, the bottom of the movable clamp 7 can be made of an insulating material with excellent thermal conductivity, including but not limited to boron nitride, etc. The purpose is to transfer the heat of the lamp body 5 pins to the bimetallic strip 11 through the movable clamp 7 and the telescopic heat-conducting component 12. The telescopic heat-conducting component 12 consists of an internal telescopic metal sleeve and an external high-temperature resistant rubber heat-insulating corrugated sleeve, so as to minimize heat loss while transferring heat.

[0041] The four corners of the bimetallic strip 11 are longitudinally slidably inserted into the tray 3 via the column slider; In practical implementation, the bimetallic strip 11 can be made of copper and steel sheets bonded together, to attach... Figure 7 From the perspective of the bimetallic strip 11, the copper sheet is located on the left and the steel sheet is located on the right. Taking advantage of the fact that the expansion coefficient of copper is greater than that of steel, when the bimetallic strip 11 is heated, the copper sheet bends more than the steel sheet. This causes the inner arc of the bimetallic strip 11 after bending to face the lamp body 5, and the outer arc to face the push rod 13. The change in the arc of the bimetallic strip 11 when bending drives the push rod 13 to move. Therefore, the force of the bimetallic strip 11 when bending must be able to completely resist the sum of the movement resistance of the entire clamping assembly, the elastic force of the tension spring 15, and the elastic force of the second spring 21. This ensures that when the bimetallic strip 11 bends, it can smoothly push the movable clamping plate 7 towards the lamp body 5 through the push rod 13 and clamp the lamp body 5. The bimetallic strip 11 here needs to be customized according to the actual temperature in the aging machine 1 and the degree of aging temperature rise of the lamp bead body 5. When the temperature of the lamp bead body 5 is normal, even in the high temperature environment of the aging machine 1, the bimetallic strip 11 will not easily deform. Only after the temperature of the lamp bead body 5 gradually rises and reaches a certain threshold will the bimetallic strip 11 begin to deform. Most importantly, when the temperature of the lamp bead body 5 rises to a certain level, it means that the aging degree of the lamp bead body 5 here has reached the point where it needs to be rejected. The bimetallic strip 11 deforms most obviously when heated. After the deformation of the bimetallic strip 11 reaches the preset value, it smoothly pulls the roller 16 into a vertical state, which makes it easy for the movable clamp 7 to reset and release the clamp on the defective lamp bead body 5.

[0042] The other end of the movable clamp 7 is symmetrically fixed with a second spring 21, and the other end of the second spring 21 is fixedly connected to the inner wall of the support plate 3.

[0043] Several sets of arc-shaped rails 14 are fixed on the upper surface of the pallet 3, with each pair of arc-shaped rails 14 symmetrically distributed. The push rod 13 is L-shaped, and the bottom of the push rod 13 moves horizontally inside the tray 3 via a trapezoidal slide rail; The upper end of the push rod 13 is provided with a vertical groove, and a long rod 18 is slidably inserted through the inside of the vertical groove; The two ends of the long rod 18 move through the interior of the arc-shaped rail 14; In practice, the long rod 18 slides along the interior of both the vertical groove and the arc-shaped rail 14. Under the limiting action of both, if the push rod 13 drives the long rod 18 to attempt to move horizontally, the long rod 18 will actively move along the arc-shaped trajectory of the arc-shaped rail 14. It should be noted that the diameter of the long rod 18 is adapted to the size of the square groove and the internal groove of the arc-shaped rail 14, but the contact surfaces of the three are smooth and burr-free, ensuring the stability of the long rod 18 when it moves.

[0044] The center of the arc-shaped rail 14 coincides with the center of the hinge point between the flip plate 10 and the upright 17.

[0045] Tension springs 15 are movably sleeved at both ends of the long rod 18; The other end of the tension spring 15 is movably sleeved on both sides of the flap 10; The elastic force of tension spring 15 is greater than that of spring 21. In practice, the long rod 18 needs to move along the trajectory of the arc-shaped rail 14, carrying one end of the tension spring 15, as shown in the attached figure. Figure 6 and attached Figure 7 As shown, when the roller 16 is pressed against the surface of the movable clamping plate 7, the top of the tension spring 15 should be on the same horizontal line as the center of the hinge between the flip plate 10 and the upright rod 17. However, the long rod 18 is misaligned with this horizontal line. The tension spring 15 always tries to retract, pulling the flip plate 10 down tightly. The movable clamping plate 7 is pushed to the fixed clamping plate 6. The second spring 21 cannot pull the movable clamping plate 7 back. When the long rod 18 rotates to the point where the two ends of the tension spring 15 are on the same horizontal line as the center of the hinge between the flip plate 10 and the upright rod 17, the flip plate 10 is at the critical point. The tension spring 15 is also stretched to its longest length. The long rod 18 continues to rotate. The moment it crosses this horizontal line, the tension spring 15 begins to retract, pulling the flip plate 10 in the opposite direction, causing the flip plate 10 to suddenly disengage from the movable clamping plate 7. Under the rebound of the second spring 21, the movable clamping plate 7 quickly returns to its original position, releasing the clamping of the lamp body 5.

[0046] A roller 16 is rotatably mounted on the top of the flip plate 10.

[0047] In practice, contrary to the above principle, when the lamp body 5 falls out and the circuit temperature gradually recovers, the bending degree of the bimetallic strip 11 gradually decreases, the long rod 18 reverses along the inside of the arc track 14, and suddenly pulls the flip plate 10 down again, while the roller 16 will hit one side of the movable clamping plate 7 and then push the movable clamping plate 7. Therefore, the rotation connection method of the roller 16 can reduce the friction between the roller 16 and the movable clamping plate 7. At the same time, the surface of the fixed clamping plate 6 can be covered with a soft material, such as a high-temperature resistant sponge pad, to prevent the roller 16 and the movable clamping plate 7 from being severely bumped.

[0048] The compensation assembly also includes a first spring 20 fixed between the conductive rod 19 and the inner wall of the bracket 9; A conductive contact is provided at the middle of one end of the box 8, and the conductive contact is horizontally aligned with the conductive rod 19.

[0049] In specific implementation, as shown in the appendix Figure 7As shown in the attached diagram, flip plate 10, the maximum distance between the conductive contact and the conductive rod 19 should be less than the travel distance of the movable clamping plate 7 during reset. This is to ensure that the conductive rod 19 and the conductive contact make contact before the movable clamping plate 7 has fully reset, and that the first spring 20 is compressed when the movable clamping plate 7 is fully reset. The rebound force of the first spring 20 ensures tight contact between the conductive rod 19 and the conductive contact. It should be noted that the first spring 20 must be made of a conductive metal material. The conductive rod 19 has a resistor embedded within it with a resistance value equal to that of the lamp bead body 5. The current in the other small branch can sequentially pass through the conductive contact, the conductive rod 19, and the first spring 20 back to the large branch. Similarly, the arrangement of the electrical connections and the selection of the resistance value of the conductive rod 19 are determined according to actual needs, and will not be elaborated upon further here.

[0050] The defective product removal assembly also includes an upward-opening door 2 located on the side of the aging machine 1; An outlet groove is provided through the middle of one end of the converging slide plate 22; The upper surface of the converging slide plate 22 is set as a smooth slope, and the outlet groove is located at the lowest point; The surface of the convergent sliding plate 22 has been polished. A temporary storage cavity 4 is provided inside the aging machine 1 below the gathering slide plate 22; The sealing plate 23 is located directly below the outlet channel, and the two are tightly attached to each other; Gravity sensor 24 is aligned with the outlet slot; In practical implementation, the gravity sensor 24 can be a commonly available model, and the threshold value can be preset. Since the LED body 5 is very light, the gravity sensor 24 needs to be highly sensitive. The gravity sensor 24 can transmit the collected gravity information to the central processing unit, which analyzes the data and sends a command to the electric push rod 25. At the same time, the electric push rod 25 can be set to push the sealing plate 23 out again within a short time after pulling it back. The specific parameter setting method can be operated according to actual needs, and will not be elaborated on in detail here.

[0051] Temporary storage cavity 4 is aligned with the outlet groove.

[0052] The aging machine 1 is equipped with an electric push rod 25 inside; The piston end of the electric push rod 25 is fixedly connected to one side of the sealing plate 23; The other side of the sealing plate 23 is chamfered and polished.

[0053] In practical implementation, when the sealing plate 23 completely seals the outlet groove, the other side of the sealing plate 23 contacts the upper door 2. As the sealing plate 23 continues to move, the upper door 2 is pushed open. When the sealing plate 23 returns, it first releases the pressure on the upper door 2, causing the upper door 2 to close, and then exposes the outlet groove. Although the temporary storage chamber 4 and the chamber above the gathering slide plate 22 are connected, the air between them will not directly convect, which can reduce the loss of hot air in the aging machine 1. The sealing effect between the upper door 2 and the aging machine 1 needs to be excellent. The upper door 2 and the aging machine 1 can be opened and closed by electric suction or other means. When the sealing plate 23 pushes the upper door 2, the upper door 2 will not be easily opened. The specific opening and closing method can be selected according to actual needs.

[0054] Working Principle: When using this LED bead aging test device in full-brightness state, the bead body 5 is first inserted sequentially between each set of fixed clamping plates 6 and movable clamping plates 7. The aging machine 1 is started normally for aging test. When a set of bead bodies 5 ages to a certain extent, the resistance of that set of bead bodies 5 increases, and the temperature of the bead body 5 rises. The high temperature is transferred to the bimetallic strip 11 through the telescopic heat conduction component 12, causing the bimetallic strip 11 to gradually bend. As the aging of the bead body 5 becomes more severe, the degree of bending of the bimetallic strip 11 increases until the bimetallic strip 11 pushes the long rod 18 through the push rod 13, causing the long rod 18 to slide along the inside of the arc-shaped rail 14. The bottom end of the tension spring 15 is pulled diagonally upward at the hinge point between the flip plate 10 and the upright rod 17. The sudden retraction of the tension spring 15 straightens the flip plate 10. The movable clamping plate 7, no longer pushed by the roller 16, moves away from the fixed clamping plate 6 under the rebound of the second spring 21. The bead body 5 loses the clamping force and falls naturally. Simultaneously, the movable clamp 7 pulls the square frame 8, causing the conductive contacts of the square frame 8 to make instantaneous contact with the conductive rod 19. The current in the main branch passes through the conductive rod 19 and the first spring 20, while the fallen LED body 5 slides down the inclined surface of the gathering slide plate 22 to the outlet slot and stays on the sealing plate 23. Until multiple LED bodies 5 are concentrated on the sealing plate 23, the gravity sensor 24 senses that the gravity exceeds the threshold and transmits the signal to the central processing unit. After analyzing the data, the processor sends a command to the electric push rod 25. The piston end of the electric push rod 25 pulls the sealing plate 23 back. The sealing plate 23 first releases the push against the upper door 2, causing the upper door 2 to close. Then the outlet groove is exposed, and the lamp body 5 falls into the temporary storage chamber 4 along the outlet groove. Then the electric push rod 25 pushes the sealing plate 23 out again, sealing the outlet groove. Then the upper door 2 is pushed open again, and the staff can choose a suitable time to take out the defective lamp body 5.

[0055] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An aging test device for LED beads in full-brightness state, comprising an aging machine (1) and a tray (3) fixed inside the aging machine (1), characterized in that, Also includes: The lamp body (5) is inserted into the tray (3); The clamping component on the tray (3) adaptively releases the lamp bead body (5) by utilizing the temperature rise after the lamp bead body (5) is used for aging; the compensation component on the tray (3) adaptively switches the current path at the moment the clamping component releases the lamp bead body (5); and the defective product removal component is installed in the aging machine (1). The clamping assembly includes a movable clamping plate (7) movably mounted on the tray (3) via a trapezoidal slide rail, a bimetallic strip (11) movably mounted inside the tray (3) via a trapezoidal slide rail, a push rod (13) fixed at the center of one side of the bimetallic strip (11), a vertical rod (17) fixed on the tray (3), and a flap (10) hinged in the middle of the vertical rod (17). The compensation component includes a square frame (8) with both ends fixed to the two sides of the movable clamp (7), a sub-bracket (9) fixed on the tray (3), and a conductive rod (19) movably inserted inside the sub-bracket (9). The defective product removal assembly includes a gathering slide plate (22) fixed inside the aging machine (1) and located directly below the tray (3), a sealing plate (23) movably disposed below the gathering slide plate (22), and a gravity sensor (24) embedded in the middle of the sealing plate (23).

2. The LED lamp bead aging test device in full-brightness state according to claim 1, characterized in that: The clamping assembly also includes a fixed clamping plate (6) fixed on the tray (3); The top of the fixed clamping plate (6) and the top of one end of the movable clamping plate (7) are both set as smooth inclined surfaces; The pins of the lamp bead body (5) are slidably inserted between the fixed clamping plate (6) and the movable clamping plate (7); The surface of the tray (3) is provided with a square groove, and the size of the square groove is larger than the size of the lamp bead body (5); The lamp bead body (5) moves through the square groove.

3. The LED lamp bead aging test device in full-brightness state according to claim 1, characterized in that: The clamping assembly, the compensation assembly, and the lamp bead body (5) are all provided with several sets of the same number; The movable clamping plate (7), the fixed clamping plate (6), and the lamp bead body (5) of each group are connected in series; The movable clamp (7), the square frame (8), and the conductive rod (19) in each group are connected in series; Several sets of clamping components, compensation components and lamp bead bodies (5) are connected in parallel.

4. The LED bead aging test device in full-brightness state according to claim 1, characterized in that: The cross-section of the movable clamp (7) is set to an "H" shape; One end of the movable clamp (7) is in close contact with the lamp bead body (5); One end of the movable clamp (7) is fixed with a telescopic heat-conducting component (12); The other end of the telescopic heat-conducting component (12) moves through the inside of the tray (3) and is fixedly connected to the center of the other side of the bimetallic sheet (11); The four corners of the bimetallic strip (11) are longitudinally slidably inserted into the tray (3) by the column slider; The other end of the movable clamp (7) is symmetrically fixed with a second spring (21), and the other end of the second spring (21) is fixedly connected to the inner wall of the support plate (3).

5. The LED lamp bead aging test device in full-brightness state according to claim 1, characterized in that: The upper surface of the tray (3) is fixed with several sets of arc-shaped rails (14), and every two sets of arc-shaped rails (14) are symmetrically distributed. The push rod (13) is L-shaped, and the bottom of the push rod (13) moves horizontally inside the tray (3) via a trapezoidal slide rail; The upper end of the push rod (13) is provided with a vertical groove, and a long rod (18) is slidably inserted through the inside of the vertical groove. The two ends of the long rod (18) move through the interior of the arc-shaped rail (14); The center of the arc-shaped rail (14) coincides with the center of the hinge point between the flap (10) and the upright (17).

6. The aging test device for LED beads in full-brightness state according to claim 5, characterized in that: The long rod (18) is movably fitted with tension springs (15) at both ends; The other end of the tension spring (15) is movably sleeved on both sides of the flap (10); The elastic force of the tension spring (15) is greater than that of the second spring (21); The top of the flap (10) is rotatably equipped with a roller (16).

7. The LED bead aging test device in full-brightness state according to claim 1, characterized in that: The compensation assembly also includes a No. 1 spring (20) fixed between the conductive rod (19) and the inner wall of the sub-bracket (9). A conductive contact is provided at the middle of one end of the frame (8), and the conductive contact is laterally aligned with the conductive rod (19).

8. The LED lamp bead aging test device in full-brightness state according to claim 1, characterized in that: The defective product removal assembly also includes an upward-opening door (2) located on the side of the aging machine (1). An outlet groove is provided through the middle of one end of the gathering slide plate (22); The upper surface of the gathering slide plate (22) is set as a smooth slope, and the outlet groove is located at the lowest point; The surface of the gathering slide plate (22) is polished.

9. The LED bead aging test device in full-brightness state according to claim 8, characterized in that: The aging machine (1) has a temporary storage cavity (4) located below the gathering slide plate (22) inside; The sealing plate (23) is located directly below the outlet groove, and the two are closely attached to each other; The gravity sensor (24) is aligned with the outlet slot; The temporary storage cavity (4) is aligned with the outlet groove.

10. The aging test device for LED beads in full-brightness state according to claim 1, characterized in that: The aging machine (1) is equipped with an electric push rod (25). The piston end of the electric push rod (25) is fixedly connected to one side of the sealing plate (23); The other side of the sealing plate (23) is chamfered and polished.

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