Underwater lamp aging test device

Abstract

The utility model discloses an underwater lamp aging test device, and relates to the technical field of lamp test. The device comprises a heat dissipation pool, an experiment pool, a first pipeline, a second pipeline, water pumping equipment and a control module, a water outlet of the heat dissipation pool is communicated with a water inlet of the experiment pool through the first pipeline, a water outlet of the experiment pool is communicated with a water inlet of the heat dissipation pool through the second pipeline, and the control module is connected with the water pumping equipment; the heat dissipation pool and the experiment pool contain medium liquid, and the medium liquid in the experiment pool is used for covering the lamp to be tested in the experiment pool and absorbing heat generated in the aging process of the lamp to be tested; the control module is used for controlling the water pumping equipment to start when determining that the temperature of the medium liquid in the experiment pool exceeds a preset temperature threshold value, so that circulating water flow is generated between the heat dissipation pool and the experiment pool, and the circulating water flow starts from the heat dissipation pool, sequentially passes through the first pipeline, the experiment pool and the second pipeline and flows back to the heat dissipation pool. According to the utility model, the lamp aging test can be reliably realized.

Description

Technical Field

[0001] This utility model relates to the field of lighting testing technology, and in particular to an underwater lighting aging testing device. Background Technology

[0002] For lighting fixtures designed for underwater applications, prolonged exposure to underwater environments can lead to issues such as seal failure, material aging, and short circuits, directly impacting the fixture's lifespan and safety. Therefore, aging tests are necessary before the fixtures are put into service. Current technology typically involves immersing the fixtures in a water tank and observing changes in appearance and electrical performance degradation to determine the degree of aging. However, this method fails to consider the temperature rise of the liquid in the tank due to the fixture's operation, which is detrimental to long-term aging. Utility Model Content

[0003] This utility model provides an underwater lighting aging test device to solve one or more technical problems existing in the prior art, and at least provides a beneficial option or creates conditions.

[0004] To achieve the above objectives, this utility model provides an underwater lighting aging test device, including a heat dissipation tank, an experimental tank, a first pipe, a second pipe, a pumping device, and a control module;

[0005] The outlet of the heat dissipation pool is connected to the inlet of the experimental pool through the first pipe, the outlet of the experimental pool is connected to the inlet of the heat dissipation pool through the second pipe, and the control module is connected to the pumping equipment.

[0006] Both the heat dissipation pool and the experimental pool contain a medium liquid. The medium liquid in the experimental pool is used to cover the lamp under test in the experimental pool and absorb the heat generated by it during the aging process.

[0007] The control module is used to control the pumping device to start when it is determined that the temperature of the medium liquid in the experimental pool exceeds a preset temperature threshold, so as to generate a circulating water flow between the heat dissipation pool and the experimental pool. The circulating water flow starts from the heat dissipation pool and flows back to the heat dissipation pool in sequence through the first pipe, the experimental pool and the second pipe.

[0008] Optionally, the experimental pool includes multiple aging pools;

[0009] The multiple aging tanks are connected sequentially by pipes, and the inlet of the first aging tank is connected to the outlet of the heat dissipation tank through the first pipe, and the outlet of the last aging tank is connected to the inlet of the heat dissipation tank through the second pipe.

[0010] Each of the aging tanks contains a medium liquid, which is used to cover the lamps under test in the aging tank and absorb the heat generated during the aging process.

[0011] Optionally, the control module includes a power supply unit, a temperature monitoring unit, and a power supply control unit;

[0012] The power supply unit is connected to the temperature monitoring unit and the power supply control unit respectively. The temperature monitoring unit is connected to the power supply control unit, and the power supply control unit is connected to the water pumping equipment.

[0013] The power supply unit is used to provide power to the temperature monitoring unit and the power supply control unit. The temperature monitoring unit is used to output an over-temperature signal when it determines that the temperature of the medium liquid in the experimental pool exceeds a preset temperature threshold. The power supply control unit is used to supply power to the pumping equipment according to the over-temperature signal so that the pumping equipment can be started.

[0014] Optionally, the power supply unit includes a first capacitor, a second capacitor, a third capacitor, and a three-terminal voltage regulator;

[0015] The first terminal of the three-terminal voltage regulator is connected to the low-voltage power supply, the first terminal of the first capacitor, and the first terminal of the second capacitor, respectively. The second terminal of the three-terminal voltage regulator is connected to the first terminal of the third capacitor, the temperature monitoring unit, and the power supply control unit, respectively. The second terminals of the first capacitor, the second capacitor, the third capacitor, and the third terminal of the three-terminal voltage regulator are all grounded.

[0016] Optionally, the power supply control unit includes relays and transistors;

[0017] The relay includes a relay coil and a relay switch. The first end of the relay coil is connected to the power supply unit, and the second end of the relay coil is connected to the collector of the transistor. The first end of the relay switch is connected to the high-voltage power supply, and the second end of the relay switch is connected to the pumping equipment. The base of the transistor is connected to the temperature monitoring unit, and the emitter of the transistor is grounded.

[0018] Optionally, the temperature monitoring unit includes a voltage divider circuit and a temperature control switch;

[0019] The temperature control switch is installed in the experimental tank. The first end of the temperature control switch is connected to the power supply unit through the voltage divider circuit, and the second end of the temperature control switch is connected to the power supply control unit.

[0020] Optionally, the power supply unit further includes a fuse;

[0021] The first terminal of the three-terminal voltage regulator is connected to the low-voltage power supply through the fuse.

[0022] Optionally, the power supply control unit further includes a manual switch;

[0023] The first terminal of the relay switch is connected to the high-voltage power supply via the manual switch.

[0024] Optionally, the power supply control unit further includes a protection diode;

[0025] The positive terminal of the protection diode is connected to the second terminal of the relay coil, and the negative terminal of the protection diode is connected to the first terminal of the relay coil.

[0026] Optionally, the power supply control unit further includes a protection resistor;

[0027] The first end of the protection resistor is connected to the base of the transistor, and the second end of the protection resistor is connected to the emitter of the transistor.

[0028] This invention has at least the following beneficial effects: When the temperature of the medium liquid in the test tank becomes too high due to continuous aging and heat generation of the lamps under test, a physical water exchange mechanism between the heat dissipation tank and the test tank, linked by a pumping device, is used to achieve a cooling effect on the test tank, enabling reliable lamp aging tests and improving energy efficiency. By generating circulating water flow between the heat dissipation tank and the test tank, the natural heat dissipation process of the lamps in an underwater environment due to water flow can be simulated, making the lamp aging test results closer to real-world operating conditions. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the composition of an underwater lamp aging test device provided in an embodiment of the present invention;

[0031] Figure 2 This is another schematic diagram of an underwater lighting aging test device provided in this embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the circuit principle of the control module provided in this embodiment of the utility model.

[0033] Attached reference numerals: 100, heat dissipation tank; 200, experimental tank; 210, first aging tank; 220, second aging tank; 230, third aging tank; 240, fourth aging tank; 300, pumping equipment; 400, first pipe; 500, second pipe. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and should not be construed as limiting the scope of this invention.

[0035] It should be noted that although functional modules are divided in the diagram, in some cases, the modules can be divided differently from those in the system.

[0036] 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. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0037] Please refer to Figure 1 , Figure 1 This is a simplified schematic diagram of an underwater lighting aging test device provided in an embodiment of the present invention. The device includes a heat dissipation tank 100, an experimental tank 200, a water pumping device 300, a first pipe 400, a second pipe 500, and a control module.

[0038] Both the heat dissipation pool 100 and the experimental pool 200 contain a medium liquid. The medium liquid in the heat dissipation pool 100 is used to exchange heat with the experimental pool 200, and the medium liquid in the experimental pool 200 is used to cover the lamp under test in the experimental pool 200 and absorb the heat generated by it during the aging process.

[0039] The outlet of the heat dissipation tank 100 is connected to the inlet of the experimental tank 200 through the first pipe 400, and the outlet of the experimental tank 200 is connected to the inlet of the heat dissipation tank 100 through the second pipe 500. The control module is connected to the pumping device 300. The control module is used to control the pumping device 300 to start when it is determined that the temperature of the medium liquid in the experimental tank 200 exceeds a preset temperature threshold, so as to generate a circulating water flow between the heat dissipation tank 100 and the experimental tank 200. The circulating water flow starts from the heat dissipation tank 100 and flows back to the heat dissipation tank 100 in sequence through the first pipe 400, the experimental tank 200 and the second pipe 500. This ensures that the temperature of the medium liquid between the heat dissipation tank 100 and the experimental tank 200 reaches a balanced state, and achieves the heat dissipation effect of the medium liquid in the experimental tank 200 without placing any electrically aged lamps under test in the heat dissipation tank 100.

[0040] In some embodiments, the outlet of the heat sink 100 is connected to the inlet of the pumping device 300 through a pipe, and the outlet of the pumping device 300 is connected to the inlet of the experimental pool 200 through the first pipe 400, so that the pumping device 300 can physically exchange water between the heat sink 100 and the experimental pool 200.

[0041] In some embodiments, the inlet and outlet of the heat dissipation pool 100 are both located at the bottom of the heat dissipation pool 100, and can be kept below the liquid surface of the medium liquid in the heat dissipation pool 100; the inlet of the experimental pool 200 is located at the top of the experimental pool 200, and can be kept above the liquid surface of the medium liquid in the experimental pool 200; the outlet of the experimental pool 200 is located at the bottom of the experimental pool 200, and can be kept below the liquid surface of the medium liquid in the experimental pool 200; by setting the inlet and outlet of the heat dissipation pool 100 and the experimental pool 200 as described above, the heat dissipation pool 100 and the experimental pool 200 can normally exchange heat and circulate the medium liquid.

[0042] In some embodiments, the pumping device 300 uses a single-phase pump, which can be started quickly during use, reducing testing costs.

[0043] In some embodiments, the experimental pool 200 includes multiple aging pools, which are sequentially connected by pipes. Specifically, the number of aging pools is denoted as N. The outlet of the i-th aging pool is connected to the inlet of the (i+1)-th aging pool via a pipe. The inlet of the first aging pool is connected to the outlet of the heat dissipation pool 100 via a first pipe 400, and the outlet of the last aging pool is connected to the inlet of the heat dissipation pool 100 via a second pipe 500. Here, N is a positive integer, and N≥2, i=1,2,...,N-1. In practical applications, at least one lamp from different production batches can be placed in different aging pools for aging tests, facilitating the tracking of production quality at different times. Alternatively, at least one lamp of different design types can be placed in different aging pools for aging tests, facilitating the recording and comparison of test data.

[0044] Each aging tank contains a medium liquid, which is used to cover the lamp under test in the aging tank and absorb the heat generated during the aging process. Furthermore, the control module is used to control the water pumping device 300 to start when the temperature of the medium liquid in any aging tank exceeds a preset temperature threshold, so that a circulating water flow is generated between the heat dissipation tank 100 and the multiple aging tanks. The circulating water flow starts from the heat dissipation tank 100 and flows back to the heat dissipation tank 100 through the first pipe 400, the multiple aging tanks and the second pipe 500 in sequence.

[0045] The outlet of the i-th aging tank is located at the bottom of the i-th aging tank, so that it remains below the liquid level of the medium liquid in the i-th aging tank; the inlet of the (i+1)-th aging tank is located at the bottom of the (i+1)-th aging tank, so that it remains below the liquid level of the medium liquid in the (i+1)-th aging tank; by setting the outlet of the i-th aging tank and the inlet of the (i+1)-th aging tank to be connected at the bottom, it is beneficial to evenly distribute the amount of medium liquid in the two aging tanks.

[0046] In some embodiments, the heat dissipation tank 100 and each aging tank are square tanks with an opening at the top and a bowl-shaped interior. The medium liquid in the heat dissipation tank 100 and each aging tank is water. It should be noted that the amount of medium liquid injected into the heat dissipation tank 100 is at least two-thirds of the total capacity of the heat dissipation tank 100, and similarly, the amount of medium liquid injected into each aging tank is at least two-thirds of the total capacity of the aging tank, thereby better simulating the underwater environment in which the lamp is located.

[0047] In some embodiments, an external power supply device can be used to provide unified power to all the lamps under test placed in multiple aging tanks, or each aging tank can be configured with a separate external power supply device to power each lamp under test placed therein, and the lamps under test have their own waterproof power cords.

[0048] In one optional application scenario, the underwater lighting aging test device is equipped with two test pools, each containing two aging pools. The two aging pools in the first test pool are designated as the first aging pool 210 and the second aging pool 220, respectively. The two aging pools in the second test pool are designated as the third aging pool 230 and the fourth aging pool 240, respectively. See details... Figure 2 As shown, at this point, two first pipes 400 and two second pipes 500 need to be configured.

[0049] The outlet of the heat dissipation tank 100 is connected to the inlet of the first aging tank 210 through a first pipe 400. The outlet of the first aging tank 210 is connected to the inlet of the second aging tank 220 through a pipe. The outlet of the second aging tank 220 is connected to the inlet of the heat dissipation tank 100 through a second pipe 500. The outlet of the heat dissipation tank 100 is connected to the inlet of the third aging tank 230 through another first pipe 400. The outlet of the third aging tank 230 is connected to the inlet of the fourth aging tank 240 through a pipe. The outlet of the fourth aging tank 240 is connected to the inlet of the heat dissipation tank 100 through another second pipe 500. In practical applications, four lamps to be tested are placed in the four aging tanks for aging. If the control module determines that the temperature of the medium liquid in any of the four aging tanks exceeds the preset temperature threshold, it controls the water pumping device 300 to start, so that circulating water flow is generated between the heat dissipation tank 100, the first aging tank 210 and the second aging tank 220, and between the heat dissipation tank 100, the third aging tank 230 and the fourth aging tank 240.

[0050] Please refer to Figure 3 , Figure 3 This is a circuit diagram of the control module provided in this embodiment of the utility model. The control module includes a power supply unit, a temperature monitoring unit, and a power supply control unit. The power supply unit is connected to both the temperature monitoring unit and the power supply control unit. The temperature monitoring unit is connected to the power supply control unit, and the power supply control unit is connected to the pumping equipment. The pumping equipment... Figure 3 It is represented by the symbol M1.

[0051] In practical applications, the power supply unit is used to provide power supply VCC to the temperature monitoring unit and the power supply control unit. The temperature monitoring unit is used to output an over-temperature signal when it determines that the temperature of the medium liquid in the experimental pool exceeds a preset temperature threshold. The power supply control unit is used to supply power to the pumping equipment according to the over-temperature signal so that the pumping equipment can be started.

[0052] In some embodiments, the power supply unit includes a first capacitor CE1, a second capacitor C1, a third capacitor C2, and a three-terminal voltage regulator U1. The first terminal of the three-terminal voltage regulator U1 is connected to a low-voltage power supply, the first terminal of the first capacitor CE1, and the first terminal of the second capacitor C1. The second terminal of the three-terminal voltage regulator U1 is connected to the first terminal of the third capacitor C2, the temperature monitoring unit, and the power supply control unit. The second terminals of the first capacitor CE1, the second capacitor C1, the third capacitor C2, and the third terminal of the three-terminal voltage regulator U1 are all grounded. In practical applications, the first capacitor CE1 and the second capacitor C1 are connected in parallel to filter the low-voltage power supply before it is input to the three-terminal voltage regulator U1. The three-terminal voltage regulator U1 then processes and outputs the power supply VCC. Simultaneously, the third capacitor C2 is used to reduce instantaneous output fluctuations.

[0053] The low-voltage power supply is a 24V DC power supply. Figure 3 It is marked as 24VDC and can be supplied by external switching power supply equipment, series battery packs, uninterruptible power supply equipment, etc.

[0054] Preferably, the three-terminal voltage regulator U1 is an LM7805 three-terminal voltage regulator. The first terminal of the three-terminal voltage regulator U1 is the input terminal, the second terminal of the three-terminal voltage regulator U1 is the output terminal, and the third terminal of the three-terminal voltage regulator U1 is the ground terminal.

[0055] In some embodiments, the power supply unit further includes a fuse F1, and the first terminal of the three-terminal voltage regulator U1 is connected to the low-voltage power supply through the fuse F1 to provide overcurrent protection for the three-terminal voltage regulator U1.

[0056] In some embodiments, the power supply control unit includes a relay and a transistor Q1. The relay includes a relay coil KM1 and a relay switch SW1. The first end of the relay coil KM1 is connected to the power supply unit, that is, the first end of the relay coil KM1 is connected to the second end of the three-terminal voltage regulator U1. The second end of the relay coil KM1 is connected to the collector of the transistor Q1. The first end of the relay switch SW1 is connected to the high-voltage power supply, and the second end of the relay switch SW1 is connected to the pumping equipment. The base of the transistor Q1 is connected to the temperature monitoring unit, and the emitter of the transistor Q1 is grounded. In practical applications, after the base of the transistor Q1 receives an over-temperature signal provided by the temperature monitoring unit, it conducts, energizing the relay coil KM1 to drive the relay switch SW1 to close, thereby enabling the high-voltage power supply to power the pumping equipment.

[0057] The high-voltage power supply is a 220V AC power supply. Figure 3 It is marked as 220VAC and can be supplied by AC mains, external uninterruptible power supply equipment, etc.

[0058] In some embodiments, the power supply control unit further includes a manual switch SW2, the first terminal of which is connected to the high-voltage power supply via the manual switch SW2. The manual switch SW2 serves as a backup direct physical disconnect point, facilitating rapid disconnection of the high-voltage power supply in emergencies, and also allowing for temporary disconnection of the high-voltage power supply during circuit debugging or maintenance.

[0059] In some embodiments, the power supply control unit further includes a protection diode D1, the positive terminal of which is connected to the second terminal of the relay coil KM1, and the negative terminal of which is connected to the first terminal of the relay coil KM1, so as to prevent the relay coil KM1 from being damaged by the reverse electromotive force generated at the moment of power failure.

[0060] In some embodiments, the power supply control unit further includes a protection resistor R1, the first end of which is connected to the base of the transistor Q1, and the second end of which is connected to the emitter of the transistor Q1, so as to prevent the transistor Q1 from malfunctioning due to noise interference.

[0061] In some embodiments, the power supply control unit further includes a light-emitting diode (LED) and a first resistor R2. The positive terminal of the LED is connected to the second terminal of the three-terminal regulator U1, the negative terminal of the LED is connected to the first terminal of the first resistor R2, and the second terminal of the first resistor R2 is connected to the collector of the transistor Q1, so that the operator can confirm whether the temperature of the medium liquid in the experimental pool is too high based on the working status of the LED.

[0062] In some embodiments, the temperature monitoring unit includes a voltage divider circuit and a temperature control switch. The temperature control switch is disposed in the experimental pool. The first terminal of the temperature control switch is connected to the power supply unit through the voltage divider circuit, that is, the first terminal of the temperature control switch is connected to the second terminal of the three-terminal regulator U1 through the voltage divider circuit. The second terminal of the temperature control switch is connected to the power supply control unit, that is, the second terminal of the temperature control switch is connected to the base of the transistor Q1. In practical applications, the temperature control switch closes when it detects that the temperature of the medium liquid in the experimental pool exceeds a preset temperature threshold, so as to output an over-temperature signal to the base of the transistor Q1. This can be understood as enabling the power supply unit to provide a suitable on-state voltage to the base of the transistor Q1 through the voltage divider circuit.

[0063] The voltage divider circuit includes a second resistor R3 and a third resistor R4. The first end of the second resistor R3 is connected to the second end of the three-terminal regulator U1. The second end of the second resistor R3 is connected to the first end of the third resistor R4 and the first end of the temperature control switch. The second end of the third resistor R4 is grounded.

[0064] Furthermore, since the experimental tank 200 contains multiple aging tanks, the number of temperature control switches is also multiple, and these multiple temperature control switches are correspondingly installed in multiple aging tanks. This allows the temperature of the medium liquid in each aging tank to be individually monitored by a corresponding temperature switch. The first terminal of each temperature control switch is connected to the power supply unit through the voltage divider circuit, and the second terminal of each temperature control switch is connected to the power supply control unit. Each temperature control switch... Figure 3 The temperature monitoring unit is represented by the symbol Sn, where n = 1, 2, ..., N. Specifically, it is used to directly output an over-temperature signal when the temperature of the medium liquid in any aging tank exceeds a preset temperature threshold.

[0065] It should be noted that when the underwater lighting aging test device is equipped with multiple test pools, the number of temperature control switches included in the temperature monitoring unit should be the same as the total number of aging pools included in the multiple test pools of the underwater lighting aging test device.

[0066] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An underwater luminaire burn-in test apparatus, characterized by, The heat dissipation pool, the experimental pool, the first pipeline, the second pipeline, the water pumping device and the control module are included. The water outlet of the heat dissipation pool is communicated with the water inlet of the experimental pool through the first pipeline, the water outlet of the experimental pool is communicated with the water inlet of the heat dissipation pool through the second pipeline, and the control module is connected with the water pumping device. The heat dissipation pool and the experimental pool contain medium liquid, and the medium liquid in the experimental pool is used for covering the lamps to be tested in the experimental pool and absorbing the heat generated in the aging process. The control module is used for controlling the water pumping device to start when it is determined that the temperature of the medium liquid in the experimental pool exceeds the preset temperature threshold, so that the circulating water flow is generated between the heat dissipation pool and the experimental pool, and the circulating water flow flows from the heat dissipation pool, passes through the first pipeline, the experimental pool and the second pipeline in turn and returns to the heat dissipation pool.

2. The underwater lamp aging test apparatus according to claim 1, characterized by The experimental pool includes a plurality of aging pools. The plurality of aging pools are communicated through pipelines in sequence, the water inlet of the first aging pool is communicated with the water outlet of the heat dissipation pool through the first pipeline, and the water outlet of the last aging pool is communicated with the water inlet of the heat dissipation pool through the second pipeline. Each of the aging pools contains medium liquid, and the medium liquid in the aging pool is used for covering the lamps to be tested in the aging pool and absorbing the heat generated in the aging process.

3. The underwater lamp burn-in test apparatus of claim 1, wherein, The control module includes a power supply unit, a temperature monitoring unit and a power supply control unit. The power supply unit is connected with the temperature monitoring unit and the power supply control unit respectively, the temperature monitoring unit is connected with the power supply control unit, and the power supply control unit is connected with the water pumping device. The power supply unit is used for providing power supply for the temperature monitoring unit and the power supply control unit, the temperature monitoring unit is used for outputting an over-temperature signal when it is determined that the temperature of the medium liquid in the experimental pool exceeds the preset temperature threshold, and the power supply control unit is used for supplying power to the water pumping device according to the over-temperature signal, so that the water pumping device starts.

4. The underwater luminaire burn-in test apparatus of claim 3, wherein, The power supply unit includes a first capacitor, a second capacitor, a third capacitor and a three-terminal voltage regulator. The first end of the three-terminal voltage regulator is connected with a low-voltage power supply, the first end of the first capacitor and the first end of the second capacitor respectively, the second end of the three-terminal voltage regulator is connected with the first end of the third capacitor, the temperature monitoring unit and the power supply control unit respectively, and the second end of the first capacitor, the second end of the second capacitor, the second end of the third capacitor and the third end of the three-terminal voltage regulator are grounded.

5. The underwater lamp burn-in test apparatus of claim 3, wherein, The power supply control unit includes a relay and a triode. The relay includes a relay coil and a relay switch, the first end of the relay coil is connected with the power supply unit, the second end of the relay coil is connected with the collector of the triode, the first end of the relay switch is connected with a high-voltage power supply, the second end of the relay switch is connected with the water pumping device, the base of the triode is connected with the temperature monitoring unit, and the emitter of the triode is grounded.

6. The underwater lamp burn-in test apparatus of claim 3, wherein, The temperature monitoring unit includes a voltage dividing circuit and a temperature control switch. The temperature control switch is arranged in the experimental pool, a first end of the temperature control switch is connected with the power supply unit through the voltage dividing circuit, and a second end of the temperature control switch is connected with the power supply control unit.

7. The underwater lamp burn-in test apparatus of claim 4, wherein, The power supply unit further comprises a safety tube. A first end of the three-terminal voltage regulator is connected with the low-voltage power supply through the safety tube.

8. The underwater lamp burn-in test apparatus of claim 5, wherein, The power supply control unit further comprises a manual switch. A first end of the relay switch is connected with the high-voltage power supply through the manual switch.

9. The underwater lamp burn-in test apparatus of claim 5, wherein, The power supply control unit further comprises a protection diode. A positive electrode of the protection diode is connected with a second end of the relay coil, and a negative electrode of the protection diode is connected with a first end of the relay coil.

10. The underwater lamp burn-in test apparatus of claim 5, wherein, The power supply control unit further comprises a protection resistor. A first end of the protection resistor is connected with a base of the triode, and a second end of the protection resistor is connected with an emitter of the triode.

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