LED detection support integrated with heat dissipation and safety power-off functions

Abstract

This invention relates to the field of LED testing technology and discloses an LED testing bracket integrating heat dissipation and safety power-off functions, comprising: a main body, a heat dissipation structure, and multiple limiting components. The top of the main body has multiple mounting positions; the bottom end face of each mounting position has a first heat dissipation hole; the heat dissipation structure includes a main negative pressure pipe and multiple branch negative pressure pipes; the main negative pressure pipe is connected to the multiple branch negative pressure pipes; the main negative pressure pipe and the multiple branch negative pressure pipes are all located in the mounting cavity; each first heat dissipation hole of each mounting position is connected to the branch negative pressure pipe and the external environment; the main negative pressure pipe is used to connect to an external negative pressure source; each limiting component is pivotally connected to the periphery of each mounting position; the swing end of the limiting component can swing relative to the mounting position, switching between a closed position and an open position; the limiting component is linked to the power input of the mounting position for on / off switching; when the limiting component is in the closed position, the power supply to the mounting position is connected; when the limiting component is in the open position, the power supply to the mounting position is disconnected. It possesses both heat dissipation and safety power-off functions.

Description

Technical Field

[0001] This invention relates to the field of LED testing technology, and in particular to an LED testing bracket that integrates heat dissipation and safe power-off functions. Background Technology

[0002] Integrated LED packages, combining the driver circuit and the light-emitting chip, offer advantages such as programmable lighting, controllable color, and low energy consumption, making them a mainstream development direction in the semiconductor lighting field. Their manufacturing process requires precise testing of electrical connection reliability, integrated circuit stability (such as dark cracks and pressure defects), and photoelectric parameters to ensure product yield and reliability.

[0003] In existing technologies, LED testing brackets generally only have simple mechanical clamping functions, lacking integrated heat dissipation structures and safe power-off protection mechanisms. During testing, the heat generated by the continuous illumination of the LED cannot be dissipated in time, leading to increased chip junction temperature and distorted test data. Furthermore, they may not automatically cut off power in the event of LED failure or explosion, posing serious fire and electric shock hazards. Improvements are needed. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, the present invention aims to provide an LED testing bracket that integrates heat dissipation and safe power-off functions. It possesses both heat dissipation and safe power-off functions.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] An LED testing bracket integrating heat dissipation and safe power-off functions includes:

[0007] The main body has an installation cavity; the top of the main body is provided with multiple installation positions, which are spaced apart along a first horizontal direction; the bottom end face of each installation position is provided with multiple first heat dissipation holes.

[0008] A heat dissipation structure includes a main negative pressure pipe and multiple branch negative pressure pipes; the main negative pressure pipe is connected to the multiple branch negative pressure pipes; the main negative pressure pipe and the multiple branch negative pressure pipes are all located in the mounting cavity; each branch negative pressure pipe corresponds one-to-one with each mounting station; each first heat dissipation hole of each mounting station is connected to the branch negative pressure pipe located in the same mounting station and the external environment; the main negative pressure pipe is used to connect to an external negative pressure source;

[0009] Multiple limiting components are provided, each of which is pivotally connected to the periphery of each installation station via a pivot shaft, and each limiting component corresponds one-to-one with each installation station. The swing end of each limiting component can swing relative to the installation station, switching between a closed position and an open position. The limiting component is linked to the power input of the installation station for on / off switching. When the limiting component is in the closed position, it fixes the LED bead to be tested, and the power supply to the installation station is connected. When the limiting component is in the open position, it releases the fixing of the LED bead to be tested, and the power supply to the installation station is disconnected.

[0010] Furthermore, the LED testing bracket integrating heat dissipation and safe power-off functions also includes a control module, which includes a controller and multiple temperature sensors. The temperature sensors are located on the bottom end face of the installation station and are used to detect the temperature of the LED beads to be tested. Each temperature sensor corresponds to each installation station. The controller is electrically connected to each temperature sensor and the negative pressure source connected to the main negative pressure pipe, and adjusts the operating power of the negative pressure source according to the temperature value detected by the temperature sensor.

[0011] Furthermore, the controller is installed in the mounting cavity; the top end face of the main body is provided with a display screen, a foot position mode switching component, and parameter adjustment buttons; the controller is electrically connected to the display screen, the foot position mode switching component, and the parameter adjustment buttons respectively.

[0012] Furthermore, the bottom end face of the installation station has an annular pin contact area, and the annular pin contact area is provided with a first pin position and a second pin position; the pin position mode switching component includes a first pin position adjustment button and a second pin position adjustment button; the first pin position adjustment button is electrically connected to the first pin position, and the second pin position adjustment button is electrically connected to the second pin position.

[0013] Furthermore, the branch negative pressure pipe extends circumferentially along the annular pin contact area, and the central area enclosed by the branch negative pressure pipe forms a connecting area; the projected area of ​​the connecting area overlaps with the projected area of ​​the annular pin contact area.

[0014] Furthermore, each of the first heat dissipation holes is located outside the annular pin contact area, and the diameter of each of the first heat dissipation holes gradually increases radially outward from the annular pin contact area.

[0015] Furthermore, the main body is also provided with a first main power switch and a second main power switch; each of the first pins is electrically connected to the first main power switch, and each of the second pins is electrically connected to the second main power switch.

[0016] Furthermore, a second heat dissipation hole is provided on the side wall of the main body, the second heat dissipation hole connecting the mounting cavity and the external space; a ventilation fan is installed in the mounting cavity, the ventilation fan being located inside the second heat dissipation hole.

[0017] Furthermore, the limiting member is provided with a first magnetic element, and the installation station is provided with a second magnetic element; when the limiting member is in the closed position, the first magnetic element and the second magnetic element magnetically attract each other to lock the limiting member in the closed position.

[0018] Furthermore, the top of the limiting component is provided with an on / off sensor light and a pull ring; the on / off sensor light is electrically connected to the power input terminal of the installation station, and the on / off sensor light illuminates when the power supply of the installation station is connected; the on / off sensor light turns off when the power supply of the installation station is disconnected; the pull ring is used to manually pull open the limiting component.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. Each installation station has multiple first heat dissipation holes arrayed on its bottom end face; the heat dissipation structure includes a main negative pressure pipe and multiple branch negative pressure pipes; the main negative pressure pipe is connected to the multiple branch negative pressure pipes; the main negative pressure pipe and the multiple branch negative pressure pipes are all located in the installation cavity; each branch negative pressure pipe corresponds one-to-one with each installation station; each first heat dissipation hole of each installation station is connected to the branch negative pressure pipe located in the same installation station and the external environment; the main negative pressure pipe is used to connect to an external negative pressure source. The active airflow generated by the negative pressure source draws in external cold air through the first heat dissipation hole, flows through the bottom of the LED bead, and then exits through the branch negative pressure pipe and the main negative pressure pipe, forming a forced convection heat dissipation channel, which improves the heat dissipation efficiency of the LED bead during the testing process. At the same time, the array-type first heat dissipation hole and the one-to-one corresponding branch negative pressure pipe design ensures an independent and uniform airflow distribution at each installation station, avoiding airflow interference between stations. In addition, while dissipating heat, the negative pressure airflow generates a downward suction force on the LED bead, which complements the mechanical fixation of the limiting component, enhancing the positional stability of the LED bead during the testing process and achieving a dual function.

[0021] 2. Each limiting component is pivotally connected to the periphery of each installation station via a pivot shaft, and each limiting component corresponds one-to-one with each installation station; the swing end of the limiting component can swing relative to the installation station, switching between a closed position and an open position; the power input of the limiting component and the installation station are linked and switched on and off. When the limiting component is in the closed position, the limiting component fixes the LED bead to be tested, and the power supply of the installation station is connected; when the limiting component is in the open position, the limiting component releases the fixing of the LED bead to be tested, and the power supply of the installation station is disconnected. It achieves physical interlocking of mechanical fixing and electrical switching, structurally ensuring a safe operating sequence of "fix first, then power on" and "power off first, then release fixing," avoiding the risk of live LED installation or removal due to incorrect operating sequence or accidental contact, and reducing the risk of electric shock and short circuit. The swing-type structure of the limit component and the power supply linkage design eliminate the need for sensors or electronic logic judgment, making the structure simple and reliable, reducing manufacturing costs and failure rate. Moreover, each installation station is independently linked and does not interfere with each other, facilitating quick LED replacement and improving the efficiency of testing operations. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an LED testing bracket that integrates heat dissipation and safe power-off functions according to the present invention;

[0023] Figure 2 for Figure 1 The enlarged view at point A is shown below;

[0024] Figure 3 for Figure 1 A sectional view of the front view;

[0025] Figure 4 for Figure 1 A sectional view of a top view.

[0026] In the diagram: 1. Main body; 11. Mounting cavity; 12. Mounting station; 121. First heat dissipation hole; 122. Annular pin contact area; 1221. First pin position; 1222. Second pin position; 13. Display screen; 14. Pin position mode switching component; 141. First pin position adjustment button; 142. Second pin position adjustment button; 15. Parameter adjustment button; 16. First main power switch; 17. Second main power switch; 18. Second heat dissipation hole; 2. Heat dissipation structure; 21. Main negative pressure pipe; 22. Branch negative pressure pipe; 3. Limiting component; 31. Swing end; 32. On / off sensor light; 33. Pull ring; 4. Control module; 41. Controller; 42. Temperature sensor; 5. Wiring area; 6. Ventilation fan. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] See Figures 1-4 The present invention provides an LED testing bracket integrating heat dissipation and safe power-off functions, comprising: a main body 1, a heat dissipation structure 2, and multiple limiting components 3.

[0031] The main body 1 has a mounting cavity 11; the top of the main body 1 is provided with multiple mounting stations 12, which are spaced apart along a first horizontal direction; the bottom end face of each mounting station 12 is provided with multiple first heat dissipation holes 121. The multiple mounting stations 12 spaced apart along the first horizontal direction on the top of the main body 1 enable the bracket to simultaneously support multiple LED beads to be tested, realizing batch testing. The bottom end face of each mounting station 12 is provided with multiple first heat dissipation holes 121, which penetrate the bottom end face of the mounting station 12, forming an airflow channel connecting the interior of the mounting station 12 with the external environment.

[0032] The heat dissipation structure 2 includes a main negative pressure pipe 21 and multiple branch negative pressure pipes 22. The main negative pressure pipe 21 is connected to the multiple branch negative pressure pipes 22. The main negative pressure pipe 21 and the multiple branch negative pressure pipes 22 are all located in the mounting cavity 11. Each branch negative pressure pipe 22 corresponds one-to-one with each mounting station 12. Each first heat dissipation hole 121 of each mounting station 12 is connected to the branch negative pressure pipe 22 located in the same mounting station 12 and the external environment. The main negative pressure pipe 21 is used to connect to an external negative pressure source. Each branch negative pressure pipe 22 corresponds one-to-one with one mounting station 12, ensuring that each mounting station 12 has an independent negative pressure channel. All the first heat dissipation holes 121 on each mounting station 12 are connected to the branch negative pressure pipe 22 corresponding to that station and the external environment, that is, the external air flows sequentially through the first heat dissipation hole 121, the branch negative pressure pipe 22, and the main negative pressure pipe 21. The end of the main negative pressure pipe 21 is used to connect an independent negative pressure source (such as a vacuum pump or fan). When the negative pressure source is activated, negative pressure is generated in the main negative pressure pipe 21 and the branch negative pressure pipe 22, thereby forcing cold air from the external environment to be drawn in through the first heat dissipation hole 121, flowing through the LED bead under test and entering the branch negative pressure pipe 22, and then flowing back into the main negative pressure pipe 21 for discharge. This negative pressure airflow not only removes heat, but also exerts a downward adsorption force on the LED bead under test placed on the installation station 12, playing an auxiliary role in fixing it, thus serving a dual purpose.

[0033] Each limiting member 3 is pivotally connected to the periphery of each installation station 12 via a pivot shaft, and each limiting member 3 corresponds one-to-one with each installation station 12. The swing end 31 of the limiting member 3 can swing relative to the installation station 12, switching between a closed position and an open position. The power input of the limiting member 3 and the installation station 12 are linked and switched on and off. When the limiting member 3 is in the closed position, the limiting member 3 fixes the LED bead to be tested, and the power supply of the installation station 12 is connected. When the limiting member 3 is in the open position, the limiting member 3 releases the fixing of the LED bead to be tested, and the power supply of the installation station 12 is disconnected. Each limiting member 3 is pivotally connected to the periphery of the corresponding installation station 12 via a pivot shaft, forming a flip-cover-like structure, and the limiting member 3 corresponds one-to-one with the installation station 12, ensuring that each station has independent fixing and power-off protection. Importantly, the power input of the limiting component 3 and the installation station 12 are linked for on / off operation: when the limiting component 3 swings to the closed position, its swing end 31 presses down on the LED bead to be tested, fixing it on the installation station 12. At the same time, the power supply to the installation station 12 is automatically connected, energizing the LED bead for testing. When the limiting component 3 swings to the open position, it releases the LED bead from its fixation, and the power supply to the installation station 12 is automatically disconnected, cutting off the power supply to the LED bead. This mechanical linkage method requires no additional sensors or electronic judgment, ensuring from a physical structure that "power can only be supplied under the premise that the limiting component 3 is reliably closed and the LED bead is properly fixed," avoiding poor contact or accidental electric shock caused by the limiting component 3 not being fully closed. Furthermore, power is immediately cut off when the limiting component 3 is opened. Even if the LED bead explodes during testing, the power is automatically cut off the moment the operator opens the limiting component 3, effectively preventing safety accidents caused by live operation.

[0034] Through the cooperation of the main negative pressure pipe 21, the branch negative pressure pipe 22, and the first heat dissipation hole 121 in the aforementioned heat dissipation structure 2, the main body 1 can form an active negative pressure airflow, which promptly removes the heat generated by the LED beads during the testing process, solving the problem of poor heat dissipation in traditional brackets. Simultaneously, through the mechanical linkage between the limiting component 3 and the power input of the installation station 12, a safe logic of "power on when closed, power off when open" is achieved. Therefore, under the combined action of the heat dissipation structure 2 and the limiting component 3, the main body 1 simultaneously possesses the two core functions of efficient heat dissipation and safe power-off.

[0035] The working principle of this invention's integrated heat dissipation and safety power-off LED testing bracket is as follows: During the testing preparation stage, the operator places the LED bead to be tested on the installation station 12 and swings the limiting member 3 to the closed position. At this time, the limiting member 3 fixes the LED bead on the installation station 12. Simultaneously, through mechanical linkage, the power input of the installation station 12 is automatically turned on, and the LED bead begins to work. During the testing process, the external negative pressure source is activated, generating negative pressure inside the heat dissipation structure 2. Cold air from the external environment is drawn into the installation station 12 through the first heat dissipation hole 121, flows through the LED bead, enters the branch negative pressure pipe 22, and merges into the main negative pressure pipe 21 for discharge, forming a continuous airflow channel. This airflow carries away the heat generated by the LED bead while exerting a downward adsorption force on it, forming a dual stabilizing effect with the mechanical fixation of the limiting member 3. When the inspection is completed or an abnormality is encountered requiring the removal of the LED bead, the operator swings the limiting member 3 to the open position. The limiting member 3 releases the LED bead from its fixation, and simultaneously, the mechanical linkage immediately cuts off the power input to the installation station 12, ensuring that the power supply is completely disconnected before the operator touches the LED bead. Throughout the entire operation, the on / off state of the power supply is entirely determined by the physical position of the limiting member 3.

[0036] Each installation station 12 has multiple first heat dissipation holes 121 arrayed on its bottom end face; the heat dissipation structure 2 includes a main negative pressure pipe 21 and multiple branch negative pressure pipes 22; the main negative pressure pipe 21 is connected to the multiple branch negative pressure pipes 22; the main negative pressure pipe 21 and the multiple branch negative pressure pipes 22 are all located in the installation cavity 11; each branch negative pressure pipe 22 corresponds one-to-one with each installation station 12; each first heat dissipation hole 121 of each installation station 12 is connected to the branch negative pressure pipe 22 located in the same installation station 12 and the external environment; the main negative pressure pipe 21 is used to connect to an external negative pressure source. The active airflow generated by the negative pressure source draws in external cold air through the first heat dissipation hole 121, flows through the bottom of the LED bead, and is then discharged through the branch negative pressure pipe 22 and the main negative pressure pipe 21, forming a forced convection heat dissipation channel, which improves the heat dissipation efficiency of the LED bead during the testing process. At the same time, the array-type first heat dissipation hole 121 and the one-to-one corresponding branch negative pressure pipe 22 design ensures an independent and uniform airflow distribution for each installation station 12, avoiding airflow interference between stations. In addition, the negative pressure airflow generates a downward adsorption force on the LED bead while dissipating heat, which complements the mechanical fixation of the limiting component 3, enhancing the positional stability of the LED bead during the testing process and achieving a dual function.

[0037] Each limiting member 3 is pivotally connected to the periphery of each installation station 12 via a pivot shaft, and each limiting member 3 corresponds one-to-one with each installation station 12; the swing end 31 of the limiting member 3 can swing relative to the installation station 12, switching between a closed position and an open position; the power input of the limiting member 3 and the installation station 12 are linked and switched on and off. When the limiting member 3 is in the closed position, the limiting member 3 fixes the LED bead to be tested, and the power supply of the installation station 12 is connected; when the limiting member 3 is in the open position, the limiting member 3 releases the fixing of the LED bead to be tested, and the power supply of the installation station 12 is disconnected. It achieves physical interlocking of mechanical fixing and electrical switching, structurally ensuring the safe operation sequence of "fix first, then power on" and "power off first, then release fixing", avoiding the risk of energized installation and removal of lamp beads due to incorrect operation sequence or accidental contact, and reducing the risk of electric shock and short circuit. The swing-type structure of the limit component 3 and the power supply linkage design do not require sensors or electronic logic judgment, the structure is simple and reliable, reducing manufacturing costs and failure rate, and each of the 12 installation stations is independently linked without interference, which facilitates quick replacement of lamp beads and improves the efficiency of testing operations.

[0038] In addition, an LED testing bracket integrating heat dissipation and safety power-off functions also includes a control module 4. The control module 4 includes a controller 41 and multiple temperature sensors 42. The temperature sensors 42 are located on the bottom end face of the installation station 12 and are used to detect the temperature of the LED beads to be tested. Each temperature sensor 42 corresponds to one installation station 12. The controller 41 is electrically connected to each temperature sensor 42 and the negative pressure source connected to the main negative pressure pipe 21, and adjusts the operating power of the negative pressure source according to the temperature value detected by the temperature sensor 42. By setting an independent temperature sensor 42 on the bottom end face of each installation station 12, the working temperature of the LED beads to be tested at the corresponding station can be monitored in real time and accurately, avoiding temperature misjudgment caused by differences in LED bead specifications or installation differences between different stations. The controller 41 dynamically adjusts the operating power of the negative pressure source based on the temperature value detected by the temperature sensor 42, achieving on-demand heat dissipation: when the LED temperature is low, the negative pressure source operates at a lower power, saving energy and reducing noise; when the LED temperature rises, the negative pressure source automatically increases its power and increases the airflow to enhance heat dissipation, ensuring that the LED always operates within the allowable temperature range. This closed-loop control method not only improves heat dissipation efficiency but also avoids the negative pressure source from operating at full load for extended periods, extending the equipment's lifespan. Simultaneously, because the temperature sensor 42 is directly embedded in the bottom end face of the mounting station 12, in close contact with the bottom of the LED, it can quickly respond to changes in the LED's temperature.

[0039] Preferably, the controller 41 is installed in the mounting cavity 11; the top end face of the main body 1 is provided with a display screen 13, a pin position mode switching component 14, and parameter adjustment buttons 15; the controller 41 is electrically connected to the display screen 13, the pin position mode switching component 14, and the parameter adjustment buttons 15 respectively. Installing the controller 41 in the mounting cavity 11 provides physical protection for it, avoiding potential collision damage or dust contamination from exposure, while also shortening the wiring distance between it and the sensors and negative pressure source, thus improving the stability of signal transmission. The top end face of the main body 1 centrally houses the display screen 13, the pin position mode switching component 14, and the parameter adjustment buttons 15, facilitating easy viewing and adjustment by operators when placing LED beads or observing the testing status. The display screen 13 can display in real time the temperature data collected by the controller 41 at each mounting station 12, the current operating power of the negative pressure source, and the power on / off status of each station, making the testing process visual. The pin position mode switching component 14 is used to switch the pin configuration mode of the LED beads to be tested to adapt to the testing requirements of different types of LED beads (such as common anode or common cathode). The parameter adjustment button 15 allows operators to manually set parameters such as temperature threshold and negative pressure power limits, or provides a manual intervention interface when the automatic control mode fails. The controller 41 is electrically connected to the display screen 13, the foot mode switching component 14, and the parameter adjustment button 15, receiving input signals from the buttons and the switching component, and driving the display screen 13 to update its display content, achieving real-time response and status feedback to user commands. This design enables the testing bracket to not only have automated heat dissipation and safe power-off functions, but also to be flexibly configured according to the characteristics of different LEDs and on-site requirements, significantly improving the equipment's versatility and ease of operation.

[0040] Preferably, the bottom end face of the mounting station 12 has an annular pin contact area 122, which has a first pin position 1221 and a second pin position 1222. The pin position mode switching component 14 includes a first pin position adjustment button 141 and a second pin position adjustment button 142. The first pin position adjustment button 141 is electrically connected to the first pin position 1221, and the second pin position adjustment button 142 is electrically connected to the second pin position 1222. Specifically, the pin position mode switching component 14 includes a first pin position adjustment button 141 and a second pin position adjustment button 142, wherein the first pin position adjustment button 141 is electrically connected to the first pin position 1221, and the second pin position adjustment button 142 is electrically connected to the second pin position 1222. By independently adjusting these two buttons, the operator can flexibly configure the power supply parameters (such as voltage amplitude, current limit, or positive and negative polarity) of the first pin position 1221 and the second pin position 1222, thereby realizing dual-channel independent driving of the LED beads under test. For example, when testing common anode LED beads, the first pin adjustment button 141 can be set to common anode output, and the second pin adjustment button 142 can be set to cathode control; when testing common cathode LED beads, the configurations can be interchanged. This dual-button independent adjustment design allows the same testing bracket to be compatible with LED beads of various polarities and specifications without changing the fixture, significantly improving the versatility and testing efficiency of the equipment.

[0041] Preferably, the branch negative pressure pipe 22 extends circumferentially along the annular pin contact area 122, and the central area enclosed by the branch negative pressure pipe 22 forms a connecting area 5; the projected area of ​​the connecting area 5 overlaps with the projected area of ​​the annular pin contact area 122. Preferably, each first heat dissipation hole 121 is located outside the annular pin contact area 122, and the diameter of each first heat dissipation hole 121 gradually increases radially outward from the annular pin contact area 122.

[0042] Preferably, each first heat dissipation hole 121 is located outside the annular pin contact area 122, and the diameter of each first heat dissipation hole 121 gradually increases radially outward from the annular pin contact area 122. The location of the first heat dissipation holes 121 outside the annular pin contact area 122 allows negative pressure airflow to enter from the outer edge of the lamp bead, flow across the bottom surface of the lamp bead, and converge towards the center, forming an enclosed heat dissipation path from the outside in and from the bottom up, thus improving the contact area and heat exchange efficiency between the airflow and the bottom of the lamp bead. The diameter of each first heat dissipation hole 121 gradually increases radially outward from the annular pin contact area 122; that is, the diameter of the heat dissipation holes closer to the annular pin contact area 122 (central region) is smaller, while the diameter of the heat dissipation holes farther from the central region (edge ​​region) is larger. Since the suction force generated by the negative pressure source is distributed within the branch negative pressure pipe 22, the airflow velocity is faster and the pressure is lower near the inlet of the branch negative pressure pipe 22 (i.e., the central area). Using a small orifice can appropriately increase the local resistance and avoid the airflow in the central area being too concentrated, resulting in insufficient airflow in the edge area. On the other hand, using a large orifice in the edge area can reduce the airflow entry resistance and attract more airflow to enter from the edge.

[0043] Preferably, the main body 1 is further provided with a first main power switch 16 and a second main power switch 17; each first pin 1221 is electrically connected to the first main power switch 16, and each second pin 1222 is electrically connected to the second main power switch 17. This layout allows the operator to simultaneously control the power supply to all first pins 1221 via the first main power switch 16, and simultaneously control the power supply to all second pins 1222 via the second main power switch 17. Before testing, the two main power switches can be closed to provide backup power to each station, and then the power supply to a single station can be controlled by the independent limiters 3 of each station; or, in case of emergency power failure, the overall power failure can be achieved by disconnecting the main power switches. Since different testing items may require different voltages or timings to be applied to the two pins of the LED, such as turning on the first pin 1221 first and then the second pin 1222, the two independent main power switches make this time-sharing control possible.

[0044] Preferably, a second heat dissipation hole 18 is provided on the side wall of the main body 1, and the second heat dissipation hole 18 connects the mounting cavity 11 and the external space; a ventilation fan 6 is installed in the mounting cavity 11, and the ventilation fan 6 is located inside the second heat dissipation hole 18. When the ventilation fan 6 is running, it forces the hot air inside the mounting cavity 11 to be discharged to the external space through the second heat dissipation hole 18, while the cold air from the external environment enters the mounting cavity 11 through other gaps or holes, forming an active convection circulation. Since the main negative pressure pipe 21, the branch negative pressure pipe 22, the controller 41, and related power lines are all arranged inside the mounting cavity 11, these components will also generate heat during operation, especially the controller 41, which may overheat during long-term high-load operation. The cooperation between the ventilation fan 6 and the second heat dissipation hole 18 is specifically designed to cool the internal environment of the mounting cavity 11, ensuring the normal operating temperature of internal components such as the controller 41 and the negative pressure pipe, and extending the service life of the equipment.

[0045] Preferably, the limiting member 3 is provided with a first magnetic component, and the mounting station 12 is provided with a second magnetic component. When the limiting member 3 is in the closed position, the first magnetic component and the second magnetic component magnetically engage to lock the limiting member 3 in the closed position. The locking of the limiting member 3 prevents accidental opening due to vibration or accidental contact, ensuring that the LED bead under test is firmly fixed throughout the testing process, while also ensuring the stability of the linkage between the limiting member 3 and the power input. Furthermore, compared to a mechanical snap-fit ​​structure, the magnetic locking has no wear parts and unlocks smoothly. After testing, the operator only needs to apply external force to overcome the magnetic attraction to pull the limiting member 3 open, without requiring additional unlocking action, thus improving operational convenience.

[0046] Preferably, the top of the limiting member 3 is provided with an on / off sensor light 32 and a pull ring 33; the on / off sensor light 32 is electrically connected to the power input terminal of the installation station 12. When the power supply to the installation station 12 is connected, the on / off sensor light 32 lights up; when the power supply to the installation station 12 is disconnected, the on / off sensor light 32 turns off; the pull ring 33 is used to manually pull open the limiting member 3. The on / off sensor light 32 on the top of the limiting member 3 is directly electrically connected to the power input terminal of the installation station 12, and its on / off state is completely determined by the power on / off state: the light is on when the power is connected, and the light is off when the power is disconnected. Since this power input terminal is the same as the power input terminal for the linkage control of the limiting member 3, the on / off sensor light 32 directly reflects whether the limiting member 3 is currently in a closed and energized state. Operators can quickly determine the working status of each installation station 12 by observing the on / off sensor light 32 from a distance or in low-light conditions, without needing to get close. For example, during batch testing, scanning the bracket can reveal which station light is off, allowing for timely troubleshooting of poor contact or the limiter 3 not being fully closed. Simultaneously, the on / off sensor light 32 itself acts as a load connected in parallel to the power input, without affecting the normal power supply to the LEDs, and its on / off response is synchronized with the action of the limiter 3. The pull ring 33, located on top of the limiter 3, provides the operator with a clear point for manual force application. When it is necessary to release the fixation, the operator pulls the pull ring 33, overcoming the magnetic locking force between the first and second magnetic components, thus opening the limiter 3 from the closed position to the open position.

[0047] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An LED testing bracket integrating heat dissipation and safe power-off functions, characterized in that, include: The main body has an installation cavity; the top of the main body is provided with multiple installation stations, which are spaced apart along a first horizontal direction. Each of the aforementioned installation stations has multiple first heat dissipation holes arrayed on its bottom end face; A heat dissipation structure includes a main negative pressure pipe and multiple branch negative pressure pipes; the main negative pressure pipe is connected to the multiple branch negative pressure pipes; the main negative pressure pipe and the multiple branch negative pressure pipes are all located in the mounting cavity; each branch negative pressure pipe corresponds one-to-one with each mounting station; each first heat dissipation hole of each mounting station is connected to the branch negative pressure pipe located in the same mounting station and the external environment; the main negative pressure pipe is used to connect to an external negative pressure source; Multiple limiting components are provided, each of which is pivotally connected to the periphery of each installation station via a pivot shaft, and each limiting component corresponds one-to-one with each installation station. The swing end of each limiting component can swing relative to the installation station, switching between a closed position and an open position. The limiting component is linked to the power input of the installation station for on / off switching. When the limiting component is in the closed position, it fixes the LED bead to be tested, and the power supply to the installation station is connected. When the limiting component is in the open position, it releases the fixing of the LED bead to be tested, and the power supply to the installation station is disconnected.

2. The LED testing bracket integrating heat dissipation and safe power-off functions according to claim 1, characterized in that, The LED testing bracket integrating heat dissipation and safe power-off functions also includes a control module, which includes a controller and multiple temperature sensors. The temperature sensors are located on the bottom end face of the installation station and are used to detect the temperature of the LED beads to be tested. Each temperature sensor corresponds to a specific installation station. The controller is electrically connected to each temperature sensor and the negative pressure source connected to the main negative pressure pipe, and adjusts the operating power of the negative pressure source according to the temperature value detected by the temperature sensor.

3. The LED testing bracket integrating heat dissipation and safe power-off functions according to claim 2, characterized in that, The controller is installed in the mounting cavity; the top end face of the main body is provided with a display screen, a foot position mode switching component and a parameter adjustment button; the controller is electrically connected to the display screen, the foot position mode switching component and the parameter adjustment button respectively.

4. The LED testing bracket integrating heat dissipation and safe power-off functions according to claim 3, characterized in that, The bottom end face of the installation station has an annular pin contact area, and the annular pin contact area has a first pin position and a second pin position; the pin position mode switching component includes a first pin position adjustment button and a second pin position adjustment button; the first pin position adjustment button is electrically connected to the first pin position, and the second pin position adjustment button is electrically connected to the second pin position.

5. The LED testing bracket integrating heat dissipation and safe power-off functions according to claim 4, characterized in that, The branch negative pressure pipe extends circumferentially along the annular pin contact area, and the central area enclosed by the branch negative pressure pipe forms a connecting area; the projection area of ​​the connecting area overlaps with the projection area of ​​the annular pin contact area.

6. The LED testing bracket integrating heat dissipation and safe power-off functions according to claim 5, characterized in that, Each of the first heat dissipation holes is located outside the annular pin contact area, and the diameter of each of the first heat dissipation holes gradually increases radially outward from the annular pin contact area.

7. The LED testing bracket integrating heat dissipation and safe power-off functions according to claim 4, characterized in that, The main body is also provided with a first main power switch and a second main power switch; each of the first pins is electrically connected to the first main power switch, and each of the second pins is electrically connected to the second main power switch.

8. The LED testing bracket integrating heat dissipation and safe power-off functions according to claim 1, characterized in that, The main body has a second heat dissipation hole on its side wall, which connects the mounting cavity and the external space; the mounting cavity is equipped with a ventilation fan, which is located inside the second heat dissipation hole.

9. The LED testing bracket integrating heat dissipation and safe power-off functions according to claim 1, characterized in that, The limiting member is provided with a first magnetic element, and the installation station is provided with a second magnetic element; when the limiting member is in the closed position, the first magnetic element and the second magnetic element magnetically attract each other to lock the limiting member in the closed position.

10. An LED testing bracket integrating heat dissipation and safe power-off functions according to claim 1, characterized in that, The top of the limiting component is provided with an on / off sensor light and a pull ring; the on / off sensor light is electrically connected to the power input terminal of the installation station, and the on / off sensor light is lit when the power of the installation station is connected; the on / off sensor light is turned off when the power of the installation station is disconnected; the pull ring is used to manually pull open the limiting component.

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