An LED aging test device

Abstract

This invention discloses an LED aging test device, relating to the field of lighting testing technology. It includes a cabinet with an electrical compartment and a loading compartment spaced horizontally inside. A loading assembly, located at the center of the loading compartment, comprises two identical discs arranged symmetrically vertically. Circumferential grooves are formed on the sides of the discs. Anti-slip rings are fixedly connected to the groove walls on the sides closest to each other, while multiple arc-shaped substrates are fixedly connected to the groove walls on the sides furthest from each other. A set of springs is fixedly connected to the side of each arc-shaped substrate facing the anti-slip rings, and a conductive arc sheet is fixedly connected to the end of each set of springs facing the anti-slip rings. The loading assembly achieves a one-step effect of immediate fixation and power-on of LED pins upon insertion, reducing cumbersome steps and improving the efficiency of clamping and testing.

Description

Technical Field

[0001] This invention relates to the field of lighting testing technology, and more specifically, to an LED aging test device. Background Technology

[0002] In the production and application of through-hole LED chips, aging tests are necessary to ensure the brightness stability, lifespan reliability, and performance consistency of products during long-term use. These tests simulate actual working conditions, continuously running LEDs and monitoring indicators such as light decay, dead LEDs, and current and voltage fluctuations. Unqualified products are screened out, and their lifespan is assessed. The core aspects of LED testing include "stable clamping," "reliable power-on," and "environmental adaptability." Among these, the ease of clamping and power-on, as well as the accuracy of environmental simulation, directly determine the testing efficiency and data reliability. Existing technologies often suffer from low testing efficiency and data that cannot reflect real-world usage due to complex clamping processes and a lack of environmental control.

[0003] In existing technologies, such as the "LED aging test device" with publication number CN117491900A, the steps for loading LEDs for aging testing are significantly cumbersome: the device requires manually sliding the limiting plate on the support base according to the LED pin size (relying on magnetic adsorption for positioning, which is prone to inaccurate spacing due to adsorption deviation) to adjust the socket adaptation space; subsequently, during insertion, the LED pins must be precisely aligned with the adjacent fixed sockets each time (the sockets are flat and elongated without a guide structure, which is prone to repeated adjustments due to circumferential alignment deviation during batch insertion); after clamping, the electric push rod must be activated to push the conductive plate to clamp the pins in order to achieve power supply. In the whole process, the clamping and power supply operations are separated, relying on manual adjustment and precise alignment. When testing in batches, clamping a single LED takes a long time and is prone to poor contact due to manual operation errors, which cannot meet the requirements of efficient batch testing.

[0004] To address the above issues, an LED aging test device is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, an LED aging test device is provided. This technical solution solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention can be implemented using the following technical solutions:

[0007] This invention provides an LED aging test device, comprising:

[0008] The cabinet is internally divided into an electrical compartment and a loading compartment.

[0009] The loading assembly, located at the center of the loading compartment, includes two discs symmetrically arranged in the vertical direction. The sides of the discs are provided with annular grooves along the circumference. Multiple arc-shaped base plates are fixedly connected to the groove walls on the side away from each other. Each arc-shaped base plate is fixedly connected to a set of springs. Each set of springs is fixedly connected to a conductive arc plate at the end away from the arc-shaped base plate.

[0010] An adjustment assembly, located at the bottom of the loading compartment, is used to drive the two discs to rotate synchronously and to adjust the vertical distance between the two discs.

[0011] The loading assembly includes a constant current power supply module fixedly installed in the electrical compartment and a miniature hot air blower and temperature sensor fixedly installed in the loading compartment. Multiple conductive arc plates in one annular groove of the loading assembly are respectively connected to the positive terminal of the constant current power supply module, and multiple conductive arc plates in another annular groove are respectively connected to the negative terminal of the constant current power supply module.

[0012] Furthermore, the adjustment assembly includes a gear base rotatably connected to the center of the bottom of the loading compartment and a motor fixed to the bottom of the loading compartment. The gear base is coaxially arranged with two discs. The output end of the motor is provided with a drive gear that meshes with the side of the gear base. It also includes a guide rail fixedly connected to the top of the gear base in the vertical direction. A mover is slidably arranged on the guide rail in the vertical direction. The guide rail passes through the central through hole of the two discs. The central through hole of the upper disc is fixedly connected to the top of the guide rail, and the bottom of the lower disc is fixedly connected to the mover. The adjustment assembly also includes an electric cylinder fixedly installed on the top of the gear base. The top of the telescopic end of the electric cylinder is fixedly connected to the bottom of the mover.

[0013] Furthermore, the adjustment assembly also includes a laser rangefinder sensor, which is fixedly mounted on the top of the lower disk to detect the vertical distance between the two disks.

[0014] Furthermore, anti-slip rings are fixedly connected to the side walls of the two annular grooves that are close to each other.

[0015] Furthermore, it also includes auxiliary components, which include a servo motor fixedly installed inside the loading compartment and a fork fixedly connected to the drive end of the servo motor. The two forks of the fork are arranged in a parallel manner, and a cleaning cloth can be detachably fitted on both forks of the fork.

[0016] Furthermore, it also includes a transparent sealing cover for sealing the loading compartment, the transparent sealing cover including a fixed part located above the loading compartment and fixedly connected to the top of the cabinet, and a rotatable and foldable movable part rotatably connected to one side of the fixed part.

[0017] Furthermore, the loading assembly also includes multiple anti-foolproof guards corresponding to each pair of arc-shaped substrates and conductive arc sheets. Each arc-shaped substrate has an anti-foolproof guard fixedly connected to its outer edge, and the outer edge of the conductive arc sheet is rolled and extends to the side of the anti-foolproof guard near the spring.

[0018] The beneficial effects of this invention are as follows:

[0019] By using the mounting slots of the components (adapting to any insertion position), the conductive arc plates with springs (ensuring immediate contact and conduction of the pins upon insertion), and the foolproof protective plate outside the arc-shaped substrate (preventing incorrect pin insertion and installation gaps), combined with the synchronous rotation of the adjustment disk (avoiding pin interference during batch insertion), the LED pins are fixed upon insertion and energized immediately after insertion, achieving a one-step effect that reduces cumbersome steps and improves the efficiency of clamping and testing.

[0020] By using a miniature hot air blower with loading components, a real-time feedback temperature sensor, a sealed transparent cover, auxiliary components (servo-driven fork, removable microfiber cleaning cloth), and the spacing adjustment of the disc, temperature simulation of real-world usage scenarios and rapid cleaning of the conductive arc sheet are achieved. This makes the data more accurate, avoids distortion of bare temperature test data, and makes cleaning more convenient, eliminating the need to disassemble the loading components, reducing wear and tear, and shortening the cleaning time. Attached Figure Description

[0021] Figure 1 This is a first-view schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a second-view schematic diagram of the overall structure of the present invention;

[0023] Figure 3 This is a structural schematic diagram of the constant current power module, electrical compartment, and loading compartment in this invention;

[0024] Figure 4 This is a schematic diagram of the structure of the disc and the foolproof guard plate in this invention;

[0025] Figure 5 This is a schematic diagram of the structure of the annular groove, the arc-shaped substrate, and the conductive arc sheet in this invention;

[0026] Figure 6 This is a schematic diagram of the structure of the disc, gear base, and electric cylinder in this invention;

[0027] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0028] Figure 8 This is a schematic diagram of the structure of the miniature hot air blower, fork, and cleaning cloth in this invention;

[0029] Figure 9This is a schematic diagram of the guide rail structure in this invention.

[0030] The reference numerals in the accompanying drawings of this invention are as follows:

[0031] 11. Server rack; 12. Electrical compartment; 13. Loading compartment; 14. Transparent sealed enclosure;

[0032] 21. Disc; 22. Annular groove; 23. Anti-slip ring; 24. Arc-shaped base plate; 25. Spring; 26. Conductive arc sheet; 27. Foolproof guard plate;

[0033] 31. Gear base; 32. Guide rail; 33. Electric cylinder; 34. Drive gear; 35. Motor; 36. Laser rangefinder sensor;

[0034] 41. Constant current power supply module; 42. Miniature hot air blower; 43. Temperature sensor;

[0035] 51. Servo motor; 52. Fork frame; 53. Cleaning cloth. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] See Figures 1-9 As an embodiment of the present invention, an LED aging test device will be described in detail below:

[0038] An LED aging test device, comprising:

[0039] Rack 11, see reference Figures 1-3 Its interior is divided into an electrical compartment 12 and a loading compartment 13 at horizontal intervals.

[0040] Loading components, see Figure 1 and Figures 3-7 Located at the center of the loading compartment 13, it includes two identical discs 21. The two discs 21 are symmetrically arranged vertically. The sides of the discs 21 are provided with annular grooves 22 along the circumferential direction. In the two annular grooves 22, the groove walls on the side closer to each other are fixedly connected with annular anti-slip rings 23, and the groove walls on the side farther from each other are fixedly connected with multiple arc-shaped base plates 24. The multiple arc-shaped base plates 24 in the annular grooves 22 are evenly arranged circumferentially. Each arc-shaped base plate 24 is fixedly connected to a set of springs 25 on the side facing the anti-slip ring 23, and each set of springs 25 is fixedly connected to a conductive arc plate 26 at the end facing the anti-slip ring 23.

[0041] Adjustment components, see Figure 1 and Figure 6 It is located at the bottom of the loading compartment 13 and is used to drive the two disks 21 to rotate synchronously to avoid front-to-back interference when the pins of multiple LEDs are inserted into the annular groove 22 in sequence, and to adjust the vertical spacing of the two disks 21 to accommodate LEDs with different pin spacings.

[0042] Loading components, see [link / reference] Figure 3 and Figure 5 It includes a constant current power supply module 41 fixedly installed in the electrical compartment 12. A plurality of conductive arc plates 26 in one annular groove 22 of the loading assembly are respectively connected to the positive terminal of the constant current power supply module 41, and a plurality of conductive arc plates 26 in another annular groove 22 are respectively connected to the negative terminal of the constant current power supply module 41.

[0043] As described above, the cabinet 11 adopts a "horizontal partitioning" design, which completely separates electrical components (such as the constant current power supply module 41) from the test loading area. This not only avoids the interference of electrical component heat on the LED test environment, but also prevents pins from accidentally touching electrical components during the test, thus avoiding safety hazards. The loading components can realize "plug and play" for LEDs without precise alignment. The anti-slip ring 23 and the conductive arc plate 26 form a "two-way clamping" mechanism. The anti-slip ring 23 uses friction to prevent the LED pins from sliding during the test, while the conductive arc plate 26 automatically adheres to the pins through the elasticity of the spring 25. Stable conductivity can be guaranteed regardless of the pin thickness (within the range of 0.2-2mm), solving the problem of "difficulty in matching thickness" in traditional clamping. When multiple LEDs are inserted in batches, the rotating disc 21 of the adjustment component slowly rotates to stagger the pin positions of adjacent LEDs, preventing pins from blocking each other. The loading component uses the existing constant current power supply module 41. Since LEDs are current-sensitive devices, constant current power supply can ensure the stability of the operating current of different LEDs (such as 20mA / 30mA rated values), avoiding sudden changes in current due to voltage fluctuations, ensuring the accuracy of aging test data, and displaying the test data through the existing data display device on the cabinet 11. The data display device on the cabinet 11 is existing technology in the field of LED bead testing. Through the cooperation of parameter acquisition, judgment and display modules, the real-time parameter characteristics of the LED bead under test are obtained and it is determined whether it is within the standard parameter range, which will not be elaborated here.

[0044] The aforementioned constant current power supply module 41 is a power supply device capable of outputting a stable current. It belongs to the existing technology components. Its core function is to accurately stabilize the output current at a set value (such as 20mA or 30mA commonly used in this solution) regardless of the fluctuations in the voltage of the load (such as the LED in this solution) due to differences in characteristics (such as different forward voltages Vf of different LEDs) or environmental changes (such as changes in LED resistance caused by temperature rise). This is achieved through an internal feedback adjustment circuit (such as sampling resistor detecting current and chip adjusting output voltage in real time), thus avoiding sudden changes in current. Since LEDs are "current-sensitive devices"—excessive current can easily burn out the chip, while insufficient current will result in abnormal brightness and aging speed. The constant current power supply module 41 can directly match the power supply requirements of LEDs and is a "standard core component" for LED aging tests.

[0045] Furthermore, this solution includes multiple independently connected conductive arc plates 26 to the power supply electrodes. Each conductive arc plate 26 is independently connected to the positive / negative terminal of the constant current power supply (the conductive arc plate 26 in the upper disk 21 is connected to the positive terminal, and the conductive arc plate 26 in the lower disk 21 is connected to the negative terminal, or vice versa). This design is to meet the "batch, accurate, and reliable" testing requirements of this solution, and its core significance is reflected in the following three points:

[0046] 1: Enables independent power supply for individual LEDs / groups (up to ten LEDs) to avoid uneven current distribution during batch testing.

[0047] If multiple LEDs (more than ten) share a set of conductive electrodes (such as the existing "multi-LED strip sharing a conductive plate"), when the forward voltage Vf of different LEDs differs (the Vf difference of LEDs in the same batch is usually 0.1-0.3V), "LEDs with low Vf will compete for current (overcurrent), and LEDs with high Vf will lack current (undercurrent)," resulting in distorted test data for some LEDs. In this solution, each LED / group of LEDs has a set of independent conductive arc plates 26 for its pins, and the constant current power supply can provide a stable current (such as 20mA for each) for each LED / group of LEDs. Even if some LEDs have different characteristics, it will not affect the test current of other LEDs (testing is done on a per-unit or per-group basis, and there will be no mutual influence between per-unit or per-group), ensuring that "the aging conditions of each LED / group of LEDs are consistent" during batch testing.

[0048] 2: Adapts to "plug and play" operation, supporting efficient batch clamping.

[0049] The advantage of this solution is that "LEDs can be plugged in and used immediately without precise alignment": multiple conductive arc plates 26 are evenly arranged along the circumference of the annular groove 22 (e.g., one group every 30°). No matter where the LED is plugged into the annular groove 22, it can quickly contact the corresponding conductive arc plate 26 without having to align each LED with a fixed socket.

[0050] 3: Improve "testing tolerance" to prevent a single unit failure from affecting the whole system.

[0051] If the conductive arc plates 26 share a common connection, when an LED is short-circuited or open-circuited, it will cause the entire power supply circuit to malfunction (such as a short circuit triggering power protection, or an open circuit causing other LEDs to lose power), forcing the batch testing to be interrupted. However, in the design of independent conductive arc plates 26, a single LED / group of LED failures only affect the circuit of its corresponding conductive arc plate 26 (such as the current in that circuit being protected by the power supply when short-circuited, while other circuits are normal), and the remaining LEDs can continue to be tested without interrupting the overall process. This is especially suitable for batch testing scenarios in factories, reducing invalid testing time.

[0052] For details, please refer to Figure 1 , Figure 6 and Figure 9 The adjustment assembly includes a gear base 31 rotatably connected to the center of the bottom of the loading compartment 13 and a motor 35 fixed to the bottom of the loading compartment 13. The gear base 31 is coaxially arranged with two discs 21. The output end of the motor 35 is provided with a drive gear 34 that meshes with the side of the gear base 31. It also includes a guide rail 32 fixedly connected to the top of the gear base 31 in the vertical direction. A mover is slidably arranged on the guide rail 32 in the vertical direction. The guide rail 32 is inserted into the central through hole of the two discs 21. The central through hole of the upper disc 21 is fixedly connected to the top of the guide rail 32, and the bottom of the lower disc 21 is fixedly connected to the mover on the guide rail 32. The adjustment assembly also includes an electric cylinder 33 fixedly installed on the top of the gear base 31. The top of the telescopic end of the electric cylinder 33 is fixedly connected to the bottom of the mover.

[0053] For further details, please refer to [link / reference]. Figures 5-6 The adjustment assembly also includes a laser rangefinder 36, which is fixedly mounted on the top of the lower disk 21 and is used to detect the vertical distance between the two disks 21.

[0054] The adjustment component achieves dual functions through "gear transmission + guide rail 32 guidance": During self-rotation, the motor 35 drives the drive gear 34 to rotate, thereby driving the gear base 31 to rotate as well, which in turn drives the two discs 21 to rotate synchronously with the gear base 31. The transmission structure is simple and the speed is stable (the speed can be adjusted by the motor 35 to achieve a slow rotation of 0.5-2 r / min, which meets the needs of batch insertion); During spacing adjustment, the extension end of the electric cylinder 33 pushes the mover on the guide rail 32 to move up and down, causing the lower disc 21 to slide along the guide rail 32, while the upper disc 21 is fixed at the top of the guide rail 32 and remains stationary, thereby accurately changing the spacing between the two discs 21 (adapting to LEDs with different pin spacings of 2-10mm); The laser range sensor 36 is designed to avoid "blind adjustment" errors. By detecting the spacing between the two discs 21 in real time and feeding back the data, the spacing adjustment accuracy can be controlled within ±0.1mm, preventing poor pin contact or damage due to excessive compression caused by improper spacing.

[0055] For further details, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 8 The loading assembly also includes a miniature hot air blower 42 and a temperature sensor 43, which are respectively fixedly installed on both sides of the lower inner wall of the loading chamber 13. Furthermore, the LED aging test device also includes a transparent sealing cover 14 for sealing the loading chamber 13. The transparent sealing cover 14 includes a fixed part located above the loading chamber 13 and fixedly connected to the top of the cabinet 11, and a rotatable, openable, and foldable movable part rotatably connected to one side of the fixed part.

[0056] The aforementioned loading component, consisting of a "miniature hot air blower 42 + temperature sensor 43," forms a closed-loop temperature control system. The miniature hot air blower 42 (a combination of a heating wire and a fan, existing technology, which will not be elaborated here) provides adjustable hot air from 30-80℃ (meeting the temperature simulation requirements of different scenarios such as automotive LEDs and outdoor LEDs). The temperature sensor 43 collects the temperature inside the loading chamber 13 in real time. When the temperature is lower than the set value, the hot air blower automatically starts and stops when it is higher than the set value, ensuring that the temperature fluctuation of the test environment does not exceed ±2℃. The transparent sealing cover 14 is designed to balance "sealing" and "operation observation": the fixed part is sealed to the cabinet 11, and the movable part is opened and closed by hinges. When mounting LEDs, the movable part is opened, and during testing, it is closed to form a sealed space. This not only prevents heat loss and ensures temperature control, but also allows real-time observation of the LED's on / off state, color change, etc., through the transparent material. The process can be monitored without interrupting the test, avoiding the problems of "difficult temperature control and easy dust accumulation" in traditional open testing.

[0057] For further details, please refer to [link / reference]. Figure 1 and Figure 8The LED aging test device also includes auxiliary components, including a servo motor 51 fixedly installed on the upper inner side of the loading compartment 13 and a fork 52 fixedly connected to the drive end of the servo motor 51. The two forks of the fork 52 are arranged in a parallel manner, and a cleaning cloth 53 can be detachably fitted on both forks of the fork 52.

[0058] The auxiliary components are specifically designed for cleaning the "ring groove 22", solving the problem of poor conductivity caused by dust accumulation in the ring groove 22 after long-term testing: the servo motor 51 can drive the fork 52 to deflect horizontally, and the upper and lower fork arms of the fork 52 correspond to the positions of the ring groove 22 of the upper and lower discs 21 respectively (the fork arm spacing is constant, and during cleaning, the spacing of the two discs 21 is adjusted to adapt to the fork arm spacing of the fork 52). The cleaning cloth 53 (made of microfiber material, which does not scratch the conductive arc plate 26) sleeved on the fork arm can be inserted into the ring groove 22 by the fork arm as a skeleton support when rotating, specifically between the anti-slip ring 23 and the conductive arc plate 26. Then the disc 21 rotates slowly to achieve cleaning. The cleaning cloth 53 adopts a "detachable sleeve" design, for example, by Velcro technology. It can be directly removed for cleaning or replacement when dirty, without disassembling the fork 52 or the disc 21, which saves time and greatly improves the equipment maintenance efficiency.

[0059] For further details, please refer to [link / reference]. Figures 4-7 The loading assembly also includes multiple anti-foolproof guard plates 27 corresponding to the periphery of each pair of arc-shaped substrates 24 and conductive arc plates 26, which are used to prevent LED pins from accidentally entering the gap between the arc-shaped substrates 24 and conductive arc plates 26. Each arc-shaped substrate 24 has an anti-foolproof guard plate 27 fixedly connected to its outer edge.

[0060] The aforementioned foolproof guard plate 27 is a detailed optimization for "batch insertion misoperation": Since there is an installation gap between the arc-shaped substrate 24 and the conductive arc sheet 26 (specifically, the space to accommodate the installation of the spring 25), if the LED pin is mistakenly inserted into this gap, the conductive arc sheet 26 will not be able to contact the pin (no response during testing) or the pin and spring 25 will be crushed and damaged; the foolproof guard plate 27 is made of thin plastic material, and after being fixed to the outer edge of the arc-shaped substrate 24, it can form a "stop" on the outside of the gap, preventing the LED pin from entering the gap when inserted, thus structurally eliminating misoperation. At the same time, the foolproof guard plate 27 visually conceals the gap, making the structure in the line of sight simpler during manual insertion, and highlighting the insertion area between the anti-slip ring 23 and the conductive arc sheet 26, thus balancing foolproof function and clamping convenience.

[0061] Furthermore, for ease of insertion, the outer edge of the conductive arc sheet 26 is rolled away from the anti-slip ring 23 and extends to the side of the foolproof guard plate 27 near the spring 25 (see...). Figure 7The smooth, arc-shaped transition makes it easier for the pin to be guided between the conductive arc plate 26 and the anti-slip ring 23. The structure with the rolled edge of the conductive arc plate 26 fits inside the anti-misoperation plate 27. The anti-misoperation plate 27 does not hinder the up-and-down movement of the conductive arc plate 26. At the same time, the anti-misoperation plate 27 and the conductive arc plate 26 work together to completely block the space accommodating the spring 25, preventing accidental operation.

[0062] The working principle described above is:

[0063] Based on the pin spacing of the LED to be tested, the adjustment component is activated: the motor 35 drives the drive gear 34 to rotate, and the gear base 31 meshing with it rotates accordingly. At the same time, the extension end of the electric cylinder 33 pushes the mover on the guide rail 32, causing the disc 21 fixed to the mover to slide along the guide rail 32. The upper disc 21 remains stationary because it is fixed to the top of the guide rail 32. During this process, the laser range sensor 36 detects the distance between the two discs 21 in real time and feeds back the data, accurately controlling the distance. Unlike existing technologies, it does not require manual sliding of the limit plate and fixation by magnets. This not only saves debugging time but also avoids the distance deviation caused by "blind adjustment" and has a wider range of applications.

[0064] After the spacing is adjusted, the rotatable movable part of the transparent sealing cover 14 is opened. By adjusting the motor 35 of the component, the gear base 31 and the two discs 21 are driven to rotate slowly and synchronously (0.5-2 r / min). The rotating discs 21 can automatically offset the positions of adjacent LED pins, making it easier to insert other LEDs. When the operator inserts the LED pin into the annular groove 22 on the side of the disc 21, the anti-foolproof guard plate 27 will form a guard edge on the outside of the gap between the arc substrate 24 and the conductive arc plate 26 to prevent the pin from being mistakenly inserted into the gap of the receiving spring 25. When the pin enters between the anti-slip ring 23 and the conductive arc plate 26 and opens the conductive arc plate 26, the elasticity of the spring 25 makes the conductive arc plate 26 automatically fit the pin. The anti-slip ring 23 relies on friction to prevent the pin from sliding, realizing "insertion to fix and insertion to conduct electricity". There is no need to rely on an additional electric push rod to push the conductive plate to clamp, which reduces mechanical wear and shortens the clamping time.

[0065] After clamping, the movable part of the transparent sealing cover 14 is closed to form a sealed test space. According to the test requirements (such as simulating the 60°C working environment of automotive LEDs), the miniature hot air blower 42 is started, which, together with the temperature sensor 43 (to collect the temperature of the loading chamber 13 in real time), forms a temperature control closed loop: the miniature hot air blower 42 automatically starts when the temperature is lower than the set value and stops when it is higher than the set value, ensuring that the temperature fluctuation in the chamber does not exceed ±2°C, which can reflect the aging of LEDs under real-world usage scenarios. Then, the constant current power supply module 41 is turned on, and the current is conducted through the wire to the conductive arc plate 26, and then through the LED pin to power the LED (such as 20mA rated current). Since LEDs are current-sensitive devices, constant current power supply avoids the sudden current change that may be caused by voltage fluctuations in existing technologies, ensuring the accuracy of test data. During the test, the operator can observe the LED's on / off and color change status in real time through the transparent material of the transparent sealing cover 14, making observation easier.

[0066] After the test, turn off the constant current power module 41 and the miniature hot air blower 42, open the transparent sealing cover 14 and take out the LED. If dust accumulates in the annular groove 22, first adjust the distance between the two discs 21 to match the distance between the upper and lower forks of the fork 52, then start the servo motor 51 to drive the fork 52 to deflect horizontally, so that the cleaning cloth 53 fitted on the fork arm can be inserted between the anti-slip ring 23 and the conductive arc plate 26; then adjust the component to drive the disc 21 to rotate slowly, and the cleaning cloth 53 wipes the dust on the surface of the anti-slip ring 23 and the conductive arc plate 26 under the support of the fork arm. After it gets dirty, the cleaning cloth 53 can be directly removed and replaced without disassembling other parts. Throughout the process, the arc-shaped base plate 24 of the mounting component provides stable support for the spring 25 and the conductive arc plate 26, and the foolproof guard plate 27 can prevent misoperation. All structures work together to solve the problems of "slow clamping, narrow fitting, and complicated maintenance" of the existing technology, and realize efficient, accurate, and all-scenario LED aging test.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LED aging test apparatus, characterized by, The utility model relates to a kind of electric power distribution cabinet, including: Cabinet (11), inside interval is equipped with electrical cabin (12) and loading cabin (13); Loading assembly, it is located in the center of loading cabin (13), including two symmetrical arrangements in vertical direction disc (21), the side of disc (21) is opened with annular groove (22) in circumferential direction, the groove wall of two annular grooves (22) is fixedly connected with multiple arc-shaped base plate (24) being arranged uniformly along the circumference, each arc-shaped base plate (24) is fixedly connected with a group of spring (25), the end of each group of spring (25) away from arc-shaped base plate (24) is fixedly connected with conductive arc piece (26); Adjusting assembly, it is located in the bottom of loading cabin (13), for driving two discs (21) synchronous rotation, and adjusting the up-down spacing of two discs (21); Loading assembly, including constant-current power module (41) being fixedly installed in electrical cabin (12) and micro hot air machine (42) and temperature sensor (43) being fixedly installed in loading cabin (13), the multiple conductive arc pieces (26) in one annular groove (22) in loading assembly are connected with the positive pole of constant-current power module (41) respectively, the multiple conductive arc pieces (26) in another annular groove (22) are connected with the negative pole of constant-current power module (41) respectively; Loading assembly still includes multiple foolproof guards (27) corresponding to each pair of arc-shaped base plate (24) and conductive arc piece (26), the outer edge of each arc-shaped base plate (24) is fixedly connected with foolproof guard (27), the outer edge of conductive arc piece (26) is edge processing and extends to the side of foolproof guard (27) close to spring (25).

2. The LED aging test device of claim 1, wherein, Adjusting assembly includes gear base (31) being rotatably connected in the center of the bottom of loading cabin (13) and motor (35) being fixed in the bottom of loading cabin (13), gear base (31) is coaxially arranged with two discs (21), the side of gear base (31) is provided with driving gear (34) being engaged with the output end of motor (35), still includes guide rail (32) being fixedly connected in vertical direction in the top of gear base (31), the guide rail (32) is slidably provided with mover in vertical direction, the guide rail (32) is inserted in the center through hole of two discs (21), wherein, the center through hole of the disc (21) in upper position is fixedly connected with the top of guide rail (32), the bottom of the disc (21) in lower position is fixedly connected with the mover, adjusting assembly still includes electric cylinder (33) being fixedly installed in the top of gear base (31), the top of telescopic end of electric cylinder (33) is fixedly connected with the bottom of mover.

3. The LED aging test apparatus of claim 2, wherein Adjusting assembly still includes laser ranging sensor (36), laser ranging sensor (36) is fixedly installed in the top of disc (21) in lower position, for detecting the up-down spacing of two discs (21).

4. The LED aging test apparatus of claim 1, wherein The groove wall of two annular grooves (22) is fixedly connected with anti-skid ring (23) close to each other.

5. The LED aging test apparatus of claim 4, wherein The auxiliary assembly comprises a steering engine (51) fixedly installed inside the loading cabin (13) and a fork frame (52) fixedly connected to a driving end of the steering engine (51), two fork arms of the fork frame (52) are arranged in a parallel manner from top to bottom, and a cleaning cloth (53) is detachably sleeved on each of the two fork arms of the fork frame (52).

6. The LED aging test apparatus of claim 1, wherein The transparent sealing cover (14) for sealing the loading cabin (13) comprises a fixed part located above the loading cabin (13) and fixedly connected to a top of the cabinet (11), and a movable part rotatably connected to one side of the fixed part and capable of being reversibly opened and closed.

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