LED lamp tube brightness detection device

Abstract

The utility model provides an LED lamp tube brightness detection device. Relates to the technical field of lamp tube detection. The LED lamp tube brightness detection device comprises a connecting folded plate and an illuminometer, a shading hollow box is fixedly installed on the connecting folded plate, a penetrating opening is formed in the top of the shading hollow box, a shading cover is fixedly installed on the outer wall of one side of the shading hollow box, an adjusting lead screw is rotatably installed in the shading cover, and the connecting folded plate is fixedly installed on the connecting folded plate. A lifting arm is installed on the adjusting lead screw in a threaded mode, and one side of the lifting arm extends into the shading hollow box and is in sliding connection with one side of the shading hollow box. The illuminometer comprises a microammeter and a selenium photocell, the selenium photocell is fixedly installed on the top of the lifting arm, and the microammeter is fixedly installed on the outer wall of the side, away from the light shield, of the light shielding hollow box. The device has the advantages that the selenium photocells are kept at the same detection height, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lamp tube testing technology, and in particular to an LDE lamp tube brightness testing device. Background Technology

[0002] Before leaving the factory, LED tubes need to undergo brightness testing. The testing process mainly focuses on the color, brightness, wavelength, and color decay of the LEDs to ensure the consistency of color, brightness, and wavelength of each LED, or that the error values ​​are within an acceptable range. This ensures that consumers can purchase safe and qualified LED tubes.

[0003] The common method of brightness detection is to use an illuminance meter, which mainly consists of a microammeter and a selenium photocell. When light shines on the selenium photocell, a photoelectric effect is generated. The magnitude of the photocurrent generated is proportional to the illuminance on the light-receiving surface of the photocell. Thus, the illuminance value can be determined by measuring the photocurrent.

[0004] However, when using a lux meter for testing, it was found that the operator usually holds the lux meter by hand, exposing the selenium photocell under the lamp tube for testing. This method has two main problems: firstly, the hand-held operation causes the distance between the selenium photocell and the lamp tube to be unstable, fluctuating and affecting the test results; secondly, in the process of large-scale testing, the lamp tube needs to be removed and installed for testing after each test, which reduces the testing efficiency.

[0005] Therefore, it is necessary to provide a new LDE lamp brightness detection device to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide an LDE lamp brightness detection device that ensures selenium photocells are kept at the same detection height and improves detection efficiency.

[0007] To solve the above-mentioned technical problems, the LDE lamp brightness detection device provided by this utility model includes: a connecting plate and an illuminance meter. A light-shielding hollow box is fixedly installed on the connecting plate. The top of the light-shielding hollow box has an insertion opening. A light-shielding cover is fixedly installed on one outer wall of the light-shielding hollow box. An adjusting screw is rotatably installed inside the light-shielding cover. A lifting arm is threaded onto the adjusting screw. One side of the lifting arm extends into the light-shielding hollow box and is slidably connected to one side of the light-shielding hollow box. The illuminance meter includes a microammeter and a selenium photocell. The selenium photocell is fixedly installed on the top of the lifting arm. The ammeter is fixedly installed on the outer wall of the light-shielding hollow box away from the light-shielding cover. A fixed wire is fixedly installed on the side of the light-shielding hollow box away from the light-shielding cover. The microammeter and selenium photocell are both fixedly connected to the two ends of the fixed wire through elastic spiral wires. A crossbeam is provided above the light-shielding hollow box. A drive shaft is rotatably installed on the crossbeam. A connecting disc is fixedly installed at the bottom end of the drive shaft. Four connecting platforms arranged in a circular array are fixedly installed at the bottom of the connecting disc. A lamp mounting plate is fixedly installed at the bottom of each of the four connecting platforms. The lamp mounting plate is adapted to the insertion port.

[0008] Preferably, a scale bar is fixedly installed on the top of the lifting arm, and the top of the scale bar extends above the light-shielding hollow box and is slidably connected to the top of the light-shielding hollow box.

[0009] Preferably, a cylinder is fixedly installed on one side of the connecting folding plate, and the output shaft of the cylinder is fixedly connected to the crossbeam.

[0010] Preferably, a full toothed gear is fixedly installed at the top of the drive shaft, a servo motor is fixedly installed at the top of the crossarm, and a quarter gear is fixedly sleeved on the output shaft of the servo motor, the quarter gear being adapted to the full toothed gear.

[0011] Preferably, the top of the crossarm is provided with a damping mechanism to create a damping effect on the drive shaft.

[0012] Preferably, the damping mechanism includes a station plate, which is fixedly installed on the top of the crossarm. A threaded rod is threadedly installed on the station plate, and a push plate is rotatably installed at one end of the threaded rod near the drive shaft. One end of a compression spring is fixedly installed on the side of the push plate near the drive shaft, and an arc-shaped damping plate is fixedly installed at the other end of the compression spring. The inner wall of the arc-shaped damping plate abuts against the outer wall of the drive shaft. Two guide rods are slidably installed on the push plate, and the ends of the two guide rods near the drive shaft are fixedly connected to the arc-shaped damping plate. A limit rod is slidably installed on the station plate, and the end of the limit rod near the drive shaft is fixedly connected to the push plate.

[0013] Preferably, both the light-shielding hollow box and the light-shielding cover are provided with an inspection door on one side.

[0014] Compared with related technologies, the LDE lamp brightness detection device provided by this utility model has the following beneficial effects:

[0015] This invention provides an LDE lamp brightness detection device. By using an adjustable screw and a lifting arm, the selenium photocell can be moved to a fixed detection height, allowing for brightness detection of the lamp at a fixed position, thus ensuring the accuracy of the detection results. Furthermore, four lamp mounting plates are provided below the connecting disc, and by utilizing the meshing between a full-tooth gear and a quarter-tooth gear, after each lamp is detected, the next lamp to be detected can be quickly brought into the light-shielding hollow box for continued detection, thereby greatly improving detection efficiency. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the LDE lamp brightness detection device provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the cylinder and the crossbeam in this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the light-shielding hollow box in this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the light shield in this utility model;

[0020] Figure 5 This is a schematic diagram of the assembly of the full toothed gear and the quarter gear in this utility model;

[0021] Figure 6 This is a schematic diagram of the connection structure between the connecting platform and the lamp mounting plate in this utility model.

[0022] The following are labeled in the diagram: 1. Connecting folding plate; 2. Hollow box for light shielding; 3. Insertion port; 4. Light shield; 5. Adjusting screw; 6. Lifting arm; 7. Microammeter; 8. Selenium photocell; 9. Fixed wire; 10. Scale bar; 11. Cylinder; 12. Crossbeam; 13. Drive shaft; 14. Connecting disc; 15. Connecting platform; 16. Lamp tube mounting plate; 17. Full toothed gear; 18. Servo motor; 19. Quarter gear; 20. Station plate; 21. Threaded rod; 22. Push plate; 23. Compression spring; 24. Arc-shaped damping plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1-6 The LDE lamp brightness detection device includes: a connecting plate 1 and a lux meter of model F louke94, which is a common brightness detection tool on the market and will not be described in detail here. A light-shielding hollow box 2 is fixedly installed on the connecting plate 1, with an insertion opening 3 on its top. A light-shielding cover 4 is fixedly installed on one outer wall of the light-shielding hollow box 2. Both the light-shielding hollow box 2 and the light-shielding cover 4 have access doors on one side for easy maintenance of their internal components. An adjusting screw 5 is rotatably installed inside the light-shielding cover 4, with its top extending above the light-shielding cover 4 for convenient... The operator operates by screwing and turning, and a lifting arm 6 is threaded onto the adjusting screw 5. One side of the lifting arm 6 extends into the light-shielding hollow box 2 and is slidably connected to one side of the light-shielding hollow box 2. Two limit bars are fixed inside the light-shielding cover 4, both of which pass through the lifting arm 6 and are slidably connected to it. The installed illuminance meter includes a microammeter 7 and a selenium photocell 8. The selenium photocell 8 is fixedly installed on the top of the lifting arm 6, and the microammeter 7 is fixedly installed on the outer wall of the light-shielding hollow box 2 on the side away from the light-shielding cover 4. A [missing information - likely a device or device] is fixedly installed on the side of the light-shielding hollow box 2 away from the light-shielding cover 4. A fixed wire 9 is attached, and the microammeter 7 and selenium photovoltaic cell 8 are both fixedly connected to the two ends of the fixed wire 9 via flexible spiral wires, thus forming an electrical circuit. A cylinder 11 is fixedly installed on one side of the connecting plate 1, and a crossbeam 12 is fixedly installed on its output shaft. The crossbeam 12 is positioned above the light-shielding hollow box 2, and a drive shaft 13 is rotatably installed on the crossbeam 12. A connecting disc 14 is fixedly installed at the bottom of the drive shaft 13, and four connecting platforms 15 arranged in a circular array are fixedly installed at the bottom of the connecting disc 14, so that adjacent connecting platforms... The angle between the four connecting platforms 15 is 90°. A lamp mounting plate 16 is fixedly installed at the bottom of each of the four connecting platforms 15. The lamp mounting plate 16 is compatible with the insertion port 3, so that the lamp can be installed at the bottom of the lamp mounting plate 16. Then, the lamp mounting plate 16 and the lamp are brought into the light-shielding hollow box 2 for brightness detection. In order to bring the selenium photocell 8 to the specified height position, a scale bar 10 is fixedly installed at the top of the lifting arm 6. The top of the scale bar 10 extends to the top of the light-shielding hollow box 2 and slides to connect with the top of the light-shielding hollow box 2.

[0025] In the above method, in order to quickly replace the next lamp tube for testing, a full gear 17 is fixedly installed at the top of the drive shaft 13, and a servo motor 18 is fixedly installed at the top of the crossarm 12. A quarter gear 19 is fixedly sleeved on its output shaft. The quarter gear 19 is adapted to the full gear 17. Each time the quarter gear 19 meshes with the full gear 17, the drive shaft 13 will rotate 90°, thereby ensuring that the lamp tube can be rotated to the top of the insertion port 3 so that the testing work can be carried out smoothly.

[0026] Furthermore, to ensure that the drive shaft 13 does not rotate naturally after the quarter gear 19 separates from the full gear 17, a damping mechanism is provided at the top of the crossarm 12 to dampen the drive shaft 13. This damping mechanism includes a station plate 20, which is fixedly installed at the top of the crossarm 12. A threaded rod 21 is threaded onto the station plate 20. A push plate 22 is rotatably installed at one end of the threaded rod 21 near the drive shaft 13. One end of a compression spring 23 is fixedly installed on the side of the push plate 22 near the drive shaft 13. An arc-shaped damping plate 24 is fixedly installed at the other end of the compression spring 23. The inner wall of the arc-shaped damping plate 24 abuts against the outer wall of the drive shaft 13. Two guide rods are slidably installed on the push plate 22. The ends of the two guide rods near the drive shaft 13 are fixedly connected to the arc-shaped damping plate 24. A limit rod is slidably installed on the station plate 20. The end of the limit rod near the drive shaft 13 is fixedly connected to the push plate 22.

[0027] The working principle of the LDE lamp brightness detection device provided by this utility model is as follows:

[0028] In the initial state, the output shaft of cylinder 11 is extended and the compression spring 23 is compressed;

[0029] When it is necessary to test the brightness of LED tubes, first fix the tubes to be tested on the four tube mounting plates 16. Then, start the output shaft of the cylinder 11 to retract, and the crossarm 12 descends together with the four tubes, so that the connecting platform 15 located directly above the light-shielding hollow box 2 contacts the top of the light-shielding hollow box 2. At this time, the corresponding tube is inside the light-shielding hollow box 2.

[0030] Subsequently, adjust the detection height of the selenium photocell 8 according to the detection requirements. During adjustment, simply rotate the adjusting screw 5, and the lifting arm 6 will raise the selenium photocell 8. At this time, observe the position of the scale line on the scale bar 10 until it moves to the specified position. Then stop rotating the adjusting screw 5, turn on the lamp tube located in the light-shielding hollow box 2, and turn on the microammeter 7 for detection. After the detection is completed, read and record the value on the microammeter 7.

[0031] Then, the output shaft of the start cylinder 11 extends, bringing out the tested lamp tube. The servo motor 18 is then started, its output shaft driving the quarter gear 19 to rotate. When the quarter gear 19 meshes with the full gear 17, it drives the transmission shaft 13 to rotate. When the quarter gear 19 disengages from the full gear 17, the servo motor 18 is turned off. At this point, the transmission shaft 13 has rotated 90°, causing the next lamp tube to be tested to rotate directly above the light-shielding hollow box 2. Then, the output shaft of the start cylinder 11 retracts, bringing the lamp tube into the light-shielding hollow box 2 for brightness testing. During the testing process, the tested lamp tube is removed and replaced with the lamp tube to be tested. After each lamp tube is tested, the testing process is repeated continuously in the same manner.

[0032] Compared with related technologies, the LDE lamp brightness detection device provided by this utility model has the following beneficial effects:

[0033] This utility model provides an LDE lamp brightness detection device. By using the adjustable screw 5 and lifting arm 6, the selenium photocell 8 can be moved to a fixed detection height, thereby enabling brightness detection of the lamp at a fixed position and ensuring the accuracy of the detection results. Furthermore, four lamp mounting plates 16 are provided below the connecting disc 14, and by utilizing the meshing between the full toothed gear 17 and the quarter gear 19, after each lamp is detected, the next lamp to be detected can be quickly brought into the light-shielding hollow box 2 for continued detection, thereby greatly improving the detection efficiency.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for detecting the brightness of an LDE tube, comprising a connecting flap and a luxmeter, characterized in that, The connecting flap is fixedly installed with a light shielding hollow box, the top of the light shielding hollow box is provided with a penetrating opening, one side outer wall of the light shielding hollow box is fixedly installed with a light shielding cover, the light shielding cover is rotatably installed with an adjusting screw rod, the adjusting screw rod is threadedly installed with a lifting arm, one side of the lifting arm extends into the light shielding hollow box and is slidably connected with one side of the light shielding hollow box. The illuminometer comprises a microammeter and a selenium photocell, the selenium photocell is fixedly installed on the top of the lifting arm, the microammeter is fixedly installed on the outer wall of one side of the light shielding hollow box away from the light shielding cover, one side of the light shielding hollow box away from the light shielding cover is fixedly installed with a fixed wire, the microammeter and the selenium photocell are fixedly connected with both ends of the fixed wire through elastic spiral wires respectively. The light shielding hollow box is provided above with a cross arm, the cross arm is rotatably installed with a transmission shaft, the bottom end of the transmission shaft is fixedly installed with a connecting disc, the bottom of the connecting disc is fixedly installed with four connecting tables arranged in a ring shape, the bottom of each of the four connecting tables is fixedly installed with a lamp tube mounting piece, the lamp tube mounting piece is matched with the penetrating opening.

2. The LDE tube brightness detection apparatus according to claim 1, wherein The top of the lifting arm is fixedly installed with a scale rod, the top end of the scale rod extends above the light shielding hollow box and is slidably connected with the top of the light shielding hollow box.

3. The LDE tube brightness detection apparatus of claim 1, wherein, One side of the connecting flap is fixedly installed with an air cylinder, the output shaft of the air cylinder is fixedly connected with the cross arm.

4. The LDE lamp brightness detection apparatus of claim 1, wherein, The top end of the transmission shaft is fixedly installed with a full tooth gear, the top of the cross arm is fixedly installed with a servo motor, a quarter gear is fixedly sleeved on the output shaft of the servo motor, the quarter gear is matched with the full tooth gear.

5. The LDE lamp brightness detection apparatus of claim 1, wherein, The top of the cross arm is provided with a damping mechanism to form a damping effect on the transmission shaft.

6. The LDE tube brightness detection apparatus of claim 5, wherein, The damping mechanism comprises a standing plate, the standing plate is fixedly installed on the top of the cross arm, a threaded rod is threadedly installed on the standing plate, a pushing piece is rotatably installed on one end of the threaded rod close to the transmission shaft, one side of the pushing piece close to the transmission shaft is fixedly installed with one end of a compression spring, the other end of the compression spring is fixedly installed with an arc-shaped damping piece, the inner wall of the arc-shaped damping piece is in abutment with the outer wall of the transmission shaft, two guide rods are slidably installed on the pushing piece, one end of each of the two guide rods close to the transmission shaft is fixedly connected with the arc-shaped damping piece, a limiting rod is slidably installed on the standing plate, one end of the limiting rod close to the transmission shaft is fixedly connected with the pushing piece.

7. The LDE lamp brightness detection apparatus of claim 1, wherein, One side of the light shielding hollow box and the light shielding cover is provided with an inspection door.

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