A plug tube

Abstract

The utility model discloses a kind of plug-in tubes, the power supply circuit of multiple light source boards is integrated by connecting plate, all connection paths are concentrated in the inside of connecting plate, effectively avoid wire redundancy and winding, to solve the problem of line mess caused by multiple light source wire connection in prior art;Further, abandon messy wire can reduce the probability of line wear and poor contact, significantly reduce the risk of short circuit;At the same time, the standardization plug-in cooperation of pin bank and female bank forms stable conductive interface, further reduces the hidden danger of short circuit;In addition, the plug-in connection of pin bank and female bank does not need complicated wire arrangement and welding, so that multiple light source boards can be quickly docked with connecting plate, effectively improve assembly efficiency and reduce labor cost;At the same time, connecting plate provides rigid support for connection, avoid connection loosening caused by wire pulling, ensure the reliability of long-term use of product;In addition, pin bank group quantity can be flexibly set according to the number of light source boards, compatibility is strong, can meet the product design of different brightness demand.

Description

Technical Field

[0001] This utility model relates to the field of lighting device technology, and in particular to a plug-in tube. Background Technology

[0002] In the field of LED pluggable diode technology, the electrical connection between the driver module and the light source board is one of the key steps in the core assembly process of the product. Currently, the mainstream connection solution in the industry is direct wire connection, but this technical approach has several significant technical drawbacks in practical engineering applications: As LED pluggable tube products rapidly evolve towards multi-light source, high brightness, and modularity, the inherent limitations of traditional direct wire connection methods are becoming increasingly apparent. When a product is equipped with multiple independent light source units, the number of connecting wires required increases linearly, resulting in redundant and disorganized internal wiring layouts. This not only significantly increases the complexity and time cost of the assembly process, but more importantly, disordered wire arrangement is prone to problems such as wire tangling and mechanical wear, which can induce short circuits and pose a significant threat to the product's safety and long-term reliability. In addition, the messy wiring layout also brings great inconvenience to later maintenance and troubleshooting, making it difficult to meet the stringent market demands of modern LED pluggable tube products in terms of ease of assembly, structural stability, and safety performance.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a plug-in tube and connecting plate that integrates the power supply lines of multiple light source boards, effectively avoiding wire redundancy and tangling, thereby solving the problem of messy lines caused by the connection of multiple light source wires in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A plug-in tube includes a connecting plate, a driving plate, and multiple light source boards; one end of each of the multiple light source boards is provided with a female header, and one side of the connecting plate is provided with multiple pin header groups, which are connected one-to-one with the female headers on the multiple light source boards; the other side of the connecting plate is electrically connected to the driving plate.

[0006] The plug-in tube also includes a lamp head and a dimming board. The lamp head is equipped with a DIP switch. The dimming board and the driver board are respectively disposed inside the lamp head. The DIP switch is electrically connected to the dimming board, and the dimming board is electrically connected to the driver board.

[0007] The aforementioned plug-in tube also includes a lamp tube and a lamp tube mounting base. Multiple light source boards are disposed inside the lamp tube. One end of the lamp tube is fixedly connected to the lamp tube mounting base, and the lamp tube mounting base is detachably connected to the lamp head.

[0008] In the aforementioned plug-in tube, one end of the lamp tube passes through the lamp tube fixing seat and abuts against the connecting plate located inside the lamp head; the connecting plate is located between one end of the lamp tube and the drive plate.

[0009] The aforementioned plug-in tube also includes an end cap, the other end of the lamp tube is fixedly connected to the end cap, and the connecting plate is located between the other end of the lamp tube and the end cap.

[0010] In the aforementioned plug-in tube, the outer periphery of the lamp tube fixing base is provided with multiple slots, and the inner periphery of the lamp head is provided with multiple blocks, with each block corresponding to one of the slots.

[0011] In the aforementioned plug-in tube, the lamp head is provided with two limiting seats, and the opposite sides of the two limiting seats are respectively provided with first limiting grooves. The two sides of the dimming plate are respectively connected to the two first limiting grooves. The inner walls of the opposite sides of the lamp head are respectively provided with limiting blocks, and the opposite sides of the two limiting blocks are respectively provided with second limiting grooves. The two sides of the drive plate are respectively connected to the two second limiting grooves.

[0012] In the aforementioned plug-in tube, an electrical connector is provided on the lamp head, and the drive board is electrically connected to the electrical connector. The electrical connector is used to realize the electrical connection between the plug-in tube and the external power supply device.

[0013] In the aforementioned plug-in tube, connecting blocks are respectively provided on both sides of the lamp holder, and the connecting blocks are used to achieve a fixed connection between the plug-in tube and the mounting position.

[0014] In the aforementioned plug-in tube, the lamp tube is a glass diffuser tube, and a high-transparency film is attached inside the glass diffuser tube.

[0015] Beneficial effects: This invention provides a pluggable tube that integrates the power supply lines of multiple light source boards through a connecting plate, concentrating all connection paths within the connecting plate. This effectively avoids redundant and tangled wires, thus solving the problem of messy wiring caused by multiple light source wire connections in existing technologies. Furthermore, eliminating messy wires reduces the probability of wire wear and poor contact, significantly reducing the risk of short circuits. At the same time, the standardized pluggable connection of the pin headers and sockets forms a stable conductive interface, further reducing the risk of short circuits. In addition, the pluggable connection of the pin headers and sockets eliminates the need for cumbersome wire arrangement and soldering, allowing multiple light source boards to quickly connect to the connecting plate, effectively improving assembly efficiency and reducing labor costs. Meanwhile, the connecting plate provides rigid support for the connection, preventing loosening caused by wire pulling and ensuring the reliability of the product for long-term use. Furthermore, the number of pin header groups can be flexibly set according to the number of light source boards, offering strong compatibility and meeting product designs with different brightness requirements. Attached Figure Description

[0016] Figure 1 A structural diagram of one embodiment of the insertion / removal tube provided by this utility model; Figure 2 A first exploded view of an embodiment of the insertion / removal tube provided by this utility model; Figure 3 A second exploded view of an embodiment of the insertion / removal tube provided by this utility model; Figure 4 An exploded view of another embodiment of the insertion / removal tube provided by this utility model.

[0017] Explanation of main component symbols: 1-Connecting plate, 11-Pin header group, 2-Driver board, 3-Light source board, 31-Socket, 4-Lamp holder, 41-DIP switch, 42-Card block, 43-Limit seat, 44-Limit block, 45-Electrical connector, 46-Connecting block, 5-Dimming board, 6-Lamp tube, 7-Lamp tube mounting base, 71-Card slot, 8-End cap. Detailed Implementation

[0018] This utility model provides a plug-in tube. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments.

[0019] In the description of this utility model, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection", etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Please see Figures 1 to 4 This utility model provides a plug-in tube, including a connecting plate 1, a driving plate 2, and multiple light source plates 3; one end of each of the multiple light source plates 3 is provided with a female header 31, and one side of the connecting plate 1 is provided with multiple pin header groups 11, which are connected one-to-one with the female headers 31 on the multiple light source plates 3; the other side of the connecting plate 1 is electrically connected to the driving plate 2.

[0021] This utility model discloses a pluggable tube that integrates the power supply lines of multiple light source boards 3 through a connecting plate 1, concentrating all connection paths within the connecting plate 1. This effectively avoids redundant and tangled wires, thus solving the problem of messy wiring caused by multiple light source wire connections in the prior art. Furthermore, eliminating messy wires reduces the probability of wire wear and poor contact, significantly reducing the risk of short circuits. At the same time, the standardized pluggable connection of the pin headers and sockets 31 forms a stable conductive interface, further reducing the risk of short circuits. In addition, the pluggable connection of the pin headers and sockets 31 eliminates the need for cumbersome wire arrangement and soldering, allowing multiple light source boards 3 to quickly connect to the connecting plate 1, effectively improving assembly efficiency and reducing labor costs. Meanwhile, the connecting plate 1 provides rigid support for the connection, preventing loosening caused by wire pulling and ensuring the reliability of the product for long-term use. Furthermore, the number of pin header groups 11 can be flexibly set according to the number of light source boards 3, offering strong compatibility and meeting product designs with different brightness requirements.

[0022] In this embodiment, multiple light source boards 3 are each fixedly provided with a header 31 at the same end. The header 31 is fixed by welding or integrally formed with the light source board 3. The pins of the header 31 are connected to the circuit of the light source board 3. Multiple independent pin groups 11 are integrated on one side of the connecting plate 1. The pins of each pin group 11 are welded and fixed to the internal circuit traces of the connecting plate 1, and are mechanically fixed and electrically connected to the header 31 of the corresponding light source board 3 through a plug-in engagement. After the pin group 11 is inserted into the header 31, a tight conductive connection is formed. The other side of the connecting plate 1 is electrically connected to the driving plate 2 through wire welding or integrated conductive sheet crimping. The board model can be MP3402; when the driver board 2 is connected to external power, it converts the mains power into low-voltage DC power required by the light source board 3. The driver board 2 transmits the converted power to the preset shunt circuit inside the connecting board 1 through electrical connection. The connecting board 1 distributes the power to each independent pin header group 11 through internal integrated circuit traces. Each pin header group 11 transmits the power to each light source board 3 through conductive connection with the corresponding light source board 3 pin header 31, driving all light source boards 3 to emit light synchronously, realizing the multi-light source power supply requirement of one output to multiple sides; the specific conductive principle between the driver board 2, the connecting board 1 and the light source board 3 is existing technology and will not be described in detail here.

[0023] Please see Figure 1 and Figure 2 The plug-in tube also includes a lamp head 4 and a dimming plate 5. A DIP switch 41 is provided on the lamp head 4. The dimming plate 5 and the driver board 2 are respectively disposed in the lamp head 4. The DIP switch 41 is electrically connected to the dimming plate 5, and the dimming plate 5 is electrically connected to the driver board 2.

[0024] In this embodiment, the lamp head 4 has a hollow cavity structure. The dimming board 5 and the driver board 2 are both built into the cavity of the lamp head 4 and are arranged side by side. The DIP switch 41 is fixed to the outer surface of the lamp head 4 by a snap-fit ​​or screw. The pins of the DIP switch 41 extend into the cavity through the reserved through hole of the lamp head 4 and are electrically connected to the corresponding pad of the dimming board 5 by soldering. The dimming board 5 and the driver board 2 are connected by wire soldering, PCB board conductive terminal docking, or flexible ribbon cable to ensure bidirectional conduction of dimming signal and power transmission. When the user toggles the DIP switch 41 on the surface of the lamp head 4, they can set the desired brightness level or dimming mode. The DIP switch 41 converts the level signal into an electrical signal, which is transmitted to the dimming board 5 via an electrical connection. The dimming board 5 has a built-in dimming control chip, which is existing technology, such as the BP5758 dimming control chip. It can analyze and process the received level signal and output the corresponding control signal. The control signal is transmitted to the driver board 2 via an electrical connection between the dimming board 5 and the driver board 2. The driver board 2 adjusts the output power parameters according to the control signal. The adjusted power is transmitted to the light source board 3 via the connecting board 1, realizing precise adjustment of the light source brightness. Users can flexibly adjust the brightness according to the usage scenario, which can meet diverse lighting needs and improve product practicality and user experience.

[0025] Please see Figure 2 and Figure 3 The plug-in tube also includes a lamp tube 6 and a lamp tube mounting base 7. Multiple light source boards 3 are disposed inside the lamp tube 6. One end of the lamp tube 6 is fixedly connected to the lamp tube mounting base 7. The lamp tube mounting base 7 is detachably connected to the lamp head 4.

[0026] In this embodiment, multiple light source plates 3 are evenly distributed and installed inside the cavity of the lamp tube 6 by adhesive bonding, with the light-emitting surface facing the outside of the lamp tube 6 to ensure effective light transmission; at the same time, the end of the lamp tube 6 near the lamp head 4 is fixed to the lamp tube mounting base 7 by an interference fit, so that the end of the lamp tube 6 and the connecting surface of the lamp tube mounting base 7 are tightly fitted; in addition, the end of the lamp tube mounting base 7 away from the lamp tube 6 is detachably connected to the lamp head 4 to realize modular docking of the lamp head 4 and the lamp tube assembly; The lamp tube 6 serves as the encapsulation and protective carrier for the light source board 3. It not only provides physical protection for the light source board 3, preventing dust, moisture, and other impurities from contacting it and extending its service life, but also enables light diffusion and transmission, reducing light scattering loss and improving lighting efficiency. The lamp tube mounting base 7 serves as an intermediate connecting component. On the one hand, it provides an installation benchmark for the lamp tube 6, limiting its radial and axial displacement. On the other hand, it provides an interface for the docking of the lamp head 4 and the lamp tube assembly, ensuring precise alignment of the electrical connections between the drive board 2, the connecting plate 1, and the light source board 3. Furthermore, multiple light source boards 3 are fixed inside the lamp tube 6 to form an integrated lamp tube assembly, which can prevent shaking and displacement during transportation or use, ensuring consistent light emission. At the same time, the connection between the lamp tube mounting base 7 and the lamp head 4 enables rapid docking of the light source assembly with the drive and dimming systems to complete the overall assembly. The detachable design of the lamp tube assembly and the lamp head 4 allows the lamp tube assembly to be replaced individually when the light source board 3 fails, without the need for complete scrapping, effectively reducing maintenance costs.

[0027] Please see Figure 2 and Figure 3 One end of the lamp tube 6 passes through the lamp tube fixing seat 7 and abuts against the connecting plate 1 located inside the lamp head 4; the connecting plate 1 is located between one end of the lamp tube 6 and the drive plate 2.

[0028] In this embodiment, one end of the lamp tube 6 passes through the central through hole of the lamp tube fixing seat 7. The central through hole is a through hole reserved in the lamp tube fixing seat 7 that matches the outer diameter of the lamp tube 6. The end of the lamp tube 6 extends into the lamp head 4. The connecting plate 1 is located inside the lamp head 4 and is between the extended end of the lamp tube 6 and the drive plate 2. The three are arranged axially in sequence, so that the power transmission path is straight, shortening the current transmission distance, reducing energy loss caused by wire resistance or contact resistance, and improving power utilization. The connecting plate 1 is clamped between the lamp tube 6 and the drive plate 2 to form a bidirectional limit, further fixing the position of the connecting plate 1, avoiding poor contact caused by displacement or vibration of the connecting plate 1, and ensuring the stability of the electrical connection. It is especially suitable for environments with frequent plugging and unplugging or vibration.

[0029] Please see Figure 2 and Figure 3 The outer periphery of the lamp tube fixing base 7 is provided with multiple slots 71, and the inner periphery of the lamp head 4 is provided with multiple blocks 42, and the multiple blocks 42 are connected to the multiple slots 71 in a one-to-one correspondence.

[0030] In this embodiment, multiple slots 71 are evenly distributed along the circumference of the outer periphery of the lamp tube fixing seat 7, and multiple locking blocks 42 are provided on the inner periphery of the lamp head 4 corresponding to the slots 71. During assembly, the lamp tube fixing seat 7 is inserted into the cavity of the lamp head 4 along the axial direction of the lamp head 4, and the locking blocks 42 slide into the bottom of the slots 71 along the guide slope of the slots 71. The limiting surface of the slots 71 and the snap-fit ​​surface of the locking blocks 42 fit together to achieve detachable fixing of the two. Pulling in the opposite direction can unlock and separate them. The detachable feature of the snap-fit ​​connection allows the lamp head 4 and the lamp tube assembly to be quickly separated and connected, which is convenient for later maintenance or component replacement.

[0031] Please see Figure 2 and Figure 3 The lamp head 4 is provided with two limiting seats 43, and the two limiting seats 43 are respectively provided with first limiting grooves on opposite sides. The two sides of the dimming plate 5 are respectively connected to the two first limiting grooves. The inner walls of opposite sides of the lamp head 4 are respectively provided with limiting blocks 44, and the two limiting blocks 44 are respectively provided with second limiting grooves on opposite sides. The two sides of the drive plate 2 are respectively connected to the two second limiting grooves.

[0032] In this embodiment, two opposing limiting seats 43 are provided inside the lamp head 4. The limiting seats 43 are integrally formed with the lamp head 4. Each of the two limiting seats 43 has a first limiting groove extending axially on its opposite side. The width of the first limiting groove matches the thickness of the dimming plate 5, and is a clearance fit or transition fit. The two side edges of the dimming plate 5 are correspondingly embedded in the two first limiting grooves. The radial displacement of the dimming plate 5 is restricted by the limiting effect of the groove wall, and axial positioning is achieved after axial insertion. The first limiting groove of the limiting seat 43 provides a precise installation reference for the dimming plate 5, ensuring that the position of the dimming plate 5 in the lamp head 4 is fixed and preventing it from shaking during transportation and use. Two opposing limiting blocks 44 are also provided on the inner walls of opposite sides of the lamp head 4. The limiting blocks 44 are integrally formed with the lamp head 4. The opposite sides of the two limiting blocks 44 are provided with second limiting grooves extending along the axial direction. The groove width of the second limiting groove matches the thickness of the drive plate 2. The two side edges of the drive plate 2 are correspondingly embedded in the two second limiting grooves. The radial and axial fixation of the drive plate 2 is achieved by limiting the groove walls. The second limiting groove of the limiting block 44 provides an installation reference for the drive plate 2, ensuring that the electrical connection interfaces of the drive plate 2 with the dimming plate 5 and the connecting plate 1 are accurately aligned, avoiding poor connection due to positional misalignment, and effectively resisting vibration and impact during transportation or use, avoiding circuit failure caused by loose components.

[0033] Please see Figures 1 to 3The lamp holder 4 is provided with an electrical connector 45, and the drive board 2 is electrically connected to the electrical connector 45. The electrical connector 45 is used to realize the electrical connection between the plug tube and the external power supply device.

[0034] In this embodiment, the electrical connector 45 is a metal conductive plug, fixedly installed at the end of the lamp holder 4 away from the lamp tube 6, and fixed to the lamp holder 4 by welding, with its conductive part extending into the interior of the lamp holder 4; at the same time, the driver board 2 is fixedly electrically connected to the electrical connector 45 through conductive wires; in addition, the external conductive part of the electrical connector 45 is exposed outside the lamp holder 4, and is adapted to the interface of external power supply devices, such as standard sockets, power supply terminal blocks, etc., and can be connected to external power supply through plugging and unplugging; external power supply devices, such as mains sockets, dedicated power supply modules, etc., input electrical energy into the electrical connector 45 by connecting to the external conductive part of the electrical connector 45; further, the electrical connector 45 transmits external electrical energy to the driver board 2 through the electrical connection of its internal conductive part; finally, the driver board 2 rectifies, filters, and converts the input electrical energy before transmitting it to the connection board 1 and the light source board 3, completing the power supply process.

[0035] Please see Figures 1 to 3 The lamp holder 4 is provided with connecting blocks 46 on both sides, and the connecting blocks 46 are used to realize the fixed connection between the plug tube and the mounting position.

[0036] In this embodiment, the connecting block 46 is a block structure, which is integrally formed with the lamp holder 4 and symmetrically distributed on both sides of the lamp holder 4 to ensure balanced installation force. The connecting block 46 is a snap-fit ​​structure, which can be adapted to different types of installation positions, such as lamp brackets, mounting plates, wall sockets, etc., thus broadening the application range of the product. The connecting block 46 and the installation position are fixedly connected to the plug-in tube by snap-fit, which can quickly complete the product fixation and reduce the installation difficulty for users.

[0037] Preferably, the lamp tube 6 is a glass diffuser tube, and a high-transparency film is attached inside the glass diffuser tube.

[0038] In this embodiment, the lamp tube 6 is made of glass and has a hollow cylindrical shape, which has the optical properties of diffusing light. A high-transparency film is attached to the inside of the lamp tube 6. The high-transparency film is a PET high-transparency film or a PC high-transparency film. It is fixedly attached to the inner wall of the glass diffuser tube by electrostatic adsorption, adhesive backing or hot pressing, forming an integrated light-transmitting structure with the glass tube. After the light source board 3 emits light, the light radiates in all directions, first illuminating the high-transmittance film on the inner wall of the lamp tube 6. The high-transmittance film has a high light transmittance, which can reduce light reflection loss and allow most of the light to pass through the high-transmittance film. The glass diffuser tube, through the diffuse reflection characteristics of its material, further diffuses the light that has passed through the high-transmittance film, making the light evenly distributed and avoiding the formation of glaring point light sources. Finally, through the synergistic effect of the high-transmittance film and the glass diffuser tube, the light passes through the lamp tube 6 softly and evenly, achieving a comfortable lighting effect. It can effectively avoid glare, improve the user's visual comfort, and make the plug-in tube suitable for various lighting scenarios such as offices, homes, and commercial spaces.

[0039] In another embodiment, please refer to Figure 4 The plug tube also includes an end cap 8, the other end of the lamp tube 6 is fixedly connected to the end cap 8, and the connecting plate 1 is located between the other end of the lamp tube 6 and the end cap 8.

[0040] In this embodiment, the end cap 8 adopts an annular structure that matches the outer diameter of the lamp tube 6. It is fixed and sealed to the other end of the lamp tube 6 away from the lamp head 4 by means of adhesive bonding or interference fit. The connecting plate 1 is located between the end of the lamp tube 6 and the end cap 8. The end cap 8 presses the edge of the connecting plate 1, so that the connecting plate 1 and the pin header and nut 31 of the light source board 3 keep in close contact. Even under vibration or temperature change environment, the stability of the electrical connection can be maintained. The end cap 8 and the lamp tube fixing seat 7 respectively support the two ends of the lamp tube 6, improve the bending resistance and impact resistance of the lamp tube 6, and reduce the risk of lamp tube 6 breakage.

[0041] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A plug-in tube, characterized in that, It includes a connecting plate, a driving plate, and multiple light source boards; each of the multiple light source boards has a female header at one end, and the connecting plate has multiple pin headers on one side, with each pin header corresponding to a female header on one of the multiple light source boards; the other side of the connecting plate is electrically connected to the driving plate.

2. The insertion / removal tube according to claim 1, characterized in that, It also includes a lamp head and a dimming board. The lamp head is equipped with a DIP switch. The dimming board and the driver board are respectively disposed inside the lamp head. The DIP switch is electrically connected to the dimming board, and the dimming board is electrically connected to the driver board.

3. The insertion / removal tube according to claim 2, characterized in that, It also includes a lamp tube and a lamp tube mounting base. Multiple light source boards are disposed inside the lamp tube. One end of the lamp tube is fixedly connected to the lamp tube mounting base, and the lamp tube mounting base is detachably connected to the lamp head.

4. A plug-in tube according to claim 3, characterized in that, One end of the lamp tube passes through the lamp tube mounting base and abuts against the connecting plate located inside the lamp head; the connecting plate is located between one end of the lamp tube and the drive plate.

5. A plug-in tube according to claim 3, characterized in that, It also includes an end cap, the other end of the lamp tube is fixedly connected to the end cap, and the connecting plate is located between the other end of the lamp tube and the end cap.

6. A plug-in tube according to claim 3, characterized in that, The outer periphery of the lamp holder is provided with multiple slots, and the inner periphery of the lamp head is provided with multiple blocks, with each block corresponding to one of the slots.

7. A plug-in tube according to claim 2, characterized in that, The lamp head is provided with two limiting seats, and the opposite sides of the two limiting seats are respectively provided with first limiting grooves. The two sides of the dimming plate are respectively connected to the two first limiting grooves. The inner walls of the opposite sides of the lamp head are respectively provided with limiting blocks, and the opposite sides of the two limiting blocks are respectively provided with second limiting grooves. The two sides of the drive plate are respectively connected to the two second limiting grooves.

8. A plug-in tube according to claim 2, characterized in that, The lamp head is provided with an electrical connector, and the drive board is electrically connected to the electrical connector. The electrical connector is used to realize the electrical connection between the plug-in tube and the external power supply device.

9. A plug-in tube according to claim 2, characterized in that, Connecting blocks are provided on both sides of the lamp head, and the connecting blocks are used to fix the plug tube to the mounting position.

10. A plug-in tube according to claim 3, characterized in that, The lamp tube is a glass diffuser tube, and a high-transmittance film is attached to the inside of the glass diffuser tube.

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