A novel wide voltage LED tube

Abstract

The utility model discloses a novel wide voltage LED lamp tube, including the lamp tube, the plug of setting in the both ends of lamp tube, set up in the light source board of lamp tube and set up the connecting terminal on the plug, one plug is provided with the drive circuit board of being connected with light source board, is provided with rectifier filter circuit, wide voltage conversion circuit and compatibility control circuit on the drive circuit board, rectifier filter circuit is connected with the connecting terminal, wide voltage conversion circuit is connected with rectifier filter circuit, and compatibility control circuit is connected with wide voltage conversion circuit, the utility model discloses the structure setting is reasonable, its setting wide voltage conversion circuit and compatibility control circuit, can adapt the use demand of different voltage, promotes its applicable scope, through compatibility control circuit, also can according to the use demand of different support and ballast, has promoted its versatility and working stability, also is favorable for reducing the manpower and material resources cost of installation, can satisfy the use demand of different scene.

Description

Technical Field

[0001] This utility model belongs to the field of lamp technology, specifically relating to a novel wide-voltage LED lamp tube. Background Technology

[0002] LED tubes are a common structure in lighting fixtures. T8 tubes are a common type of LED tube structure, consisting of a glass tube, end caps at both ends of the glass tube, and a light source board inside the glass tube, as shown in CN202021121149.2. While this structure can meet general needs, it only supports a fixed range of input voltages. However, in scenarios with different power grid standards or large voltage fluctuations in different regions, it is prone to failure to start or unstable brightness. This results in poor compatibility of T8 tubes, requiring additional wiring modifications or component replacements when replacing the tubes, which significantly increases installation costs, reduces its versatility, and limits its applicability to different scenarios. Summary of the Invention

[0003] The purpose of this invention is to provide a new type of wide-voltage LED tube with a reasonable structural design that is conducive to improving versatility.

[0004] The technical solution to achieve the purpose of this utility model is a new type of wide voltage LED tube, including a tube, plugs at both ends of the tube, a light source board inside the tube, and connecting terminals on the plugs, wherein a driving circuit board connected to the light source board is provided inside one of the plugs.

[0005] The drive circuit board is equipped with a rectifier filter circuit, a wide voltage conversion circuit, and a compatibility control circuit.

[0006] The rectifier and filter circuit is connected to the connection terminal and is used to receive external AC voltage and perform rectification and filtering.

[0007] The wide voltage conversion circuit is connected to the rectifier and filter circuit to convert the rectified and filtered voltage into a stable DC voltage.

[0008] The compatibility control circuit is connected to the wide voltage conversion circuit, and is used to connect the wide voltage conversion circuit to the light source board, automatically identify the type of external bracket and ballast, and adjust the electrical connection to achieve compatibility.

[0009] A further preferred embodiment is that the input voltage of the wide voltage conversion circuit is 100-270V.

[0010] A further preferred embodiment is that the PWM control chip of the wide voltage conversion circuit is UC3842, TL494, TMS320DSP or 8XC196Mx.

[0011] A further preferred embodiment is that the compatibility control circuit includes a control drive circuit, a lamp holder voltage signal detection circuit, and a ballast frequency signal identification circuit connected to the control drive circuit;

[0012] The control drive circuit is connected to the light source board.

[0013] A further preferred embodiment is that: the end of the lamp tube is provided with a locking hole, and the outer wall of the plug is provided with a buckle protrusion;

[0014] The plug is inserted into the lamp tube and the buckle protrusion is engaged in the buckle hole for positioning.

[0015] This utility model has positive effects: its structure is reasonable, and it is equipped with a wide voltage conversion circuit and a compatibility control circuit, which can adapt to the use requirements of different voltages and improve its applicability. In addition, through the compatibility control circuit, it can also improve its versatility and working stability according to the use requirements of different brackets and ballasts. It also helps to reduce the manpower and material costs of installation and can meet the use requirements of different scenarios, making it highly applicable. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a circuit block diagram of the present invention.

[0019] Reference numerals: 1. Lamp tube; 2. End cap; 3. Light source board; 4. Connecting terminal; 5. Driver circuit board; 5. Rectifier and filter circuit; 51. Wide voltage conversion circuit; 52. Compatibility control circuit; 53. Control and drive circuit; 531. Lamp holder voltage signal detection circuit; 532. Ballast frequency signal recognition circuit; 533. Clip hole; 6. Clip protrusion; 7. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0021] See Figures 1 to 2As shown, a novel wide-voltage LED tube includes a tube 1, plugs 2 at both ends of the tube, a light source board 3 inside the tube, and connecting terminals 4 on the plugs. One of the plugs contains a drive circuit board 5 connected to the light source board. In this embodiment, the tube is made of glass or a translucent plastic structure, and the plugs are made of an insulating plastic structure. The aforementioned structures, connecting terminals, and light source board are all conventional structures in the prior art, simply applied in a simplified manner. The connecting terminals adopt a structural design conforming to GB / T 1406.1 standards to ensure mechanical compatibility with existing brackets.

[0022] In this embodiment, the drive circuit board is equipped with a rectifier-filter circuit 51, a wide voltage conversion circuit 52, and a compatibility control circuit 53. During connection, the rectifier-filter circuit is connected to the connection terminal to receive external AC voltage and perform rectification and filtering. The wide voltage conversion circuit is connected to the rectifier-filter circuit to convert the rectified and filtered voltage into a stable DC voltage. The compatibility control circuit is connected to the wide voltage conversion circuit to connect the wide voltage conversion circuit to the light source board and automatically identify the type of external bracket and ballast, while adjusting the electrical connection to achieve compatibility. This structure can meet the usage requirements of different situations, expanding its applicability and thus satisfying the needs of different scenarios. It has strong versatility and helps reduce labor and material costs during assembly and maintenance, making it highly adaptable.

[0023] In this embodiment, the input voltage of the wide voltage conversion circuit is 100-270V, which can meet the input voltage requirements of different situations. Furthermore, the PWM control chip of the wide voltage conversion circuit is either UC3842, TL494, TMS320DSP, or 8XC196Mx.

[0024] In this embodiment, the compatibility control circuit includes a control drive circuit 531, a lamp holder voltage signal detection circuit 532, and a ballast frequency signal identification circuit 533 connected to the control drive circuit; the control drive circuit is connected to the light source board. During use, the lamp holder voltage signal detection circuit distinguishes between single-ended and double-ended brackets, the ballast frequency signal identification circuit identifies different ballasts, and the control drive circuit automatically switches to the matching operating mode, thus expanding its applicability.

[0025] In this embodiment, the end of the lamp tube is provided with a locking hole 6, and the outer wall of the plug is provided with a snap-fit ​​protrusion 7; the plug is inserted into the lamp tube and the snap-fit ​​protrusion is engaged in the locking hole for positioning. This improves the convenience and effectiveness of the plug's snap-fit ​​mechanism.

[0026] This utility model has positive effects: its structure is reasonable, and it is equipped with a wide voltage conversion circuit and a compatibility control circuit, which can adapt to the use requirements of different voltages and improve its applicability. In addition, through the compatibility control circuit, it can also improve its versatility and working stability according to the use requirements of different brackets and ballasts. It also helps to reduce the manpower and material costs of installation and can meet the use requirements of different scenarios, making it highly applicable.

[0027] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0028] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A novel wide-voltage LED tube, comprising a tube, end caps disposed at both ends of the tube, a light source board disposed within the tube, and connecting terminals disposed on the end caps, characterized in that: One of the plugs contains a drive circuit board that is connected to the light source board; The drive circuit board is equipped with a rectifier filter circuit, a wide voltage conversion circuit, and a compatibility control circuit. The rectifier and filter circuit is connected to the connection terminal and is used to receive external AC voltage and perform rectification and filtering. The wide voltage conversion circuit is connected to the rectifier and filter circuit to convert the rectified and filtered voltage into a stable DC voltage. The compatibility control circuit is connected to the wide voltage conversion circuit, and is used to connect the wide voltage conversion circuit to the light source board, automatically identify the type of external bracket and ballast, and adjust the electrical connection to achieve compatibility.

2. The novel wide-voltage LED tube according to claim 1, characterized in that: The input voltage of the wide voltage conversion circuit is 100-270V.

3. A novel wide-voltage LED tube according to claim 2, characterized in that: The PWM control chip for the wide voltage conversion circuit is UC3842, TL494, TMS320DSP or 8XC196Mx.

4. A novel wide-voltage LED tube according to claim 1, characterized in that: The compatibility control circuit includes a control drive circuit, a lamp holder voltage signal detection circuit and a ballast frequency signal identification circuit connected to the control drive circuit; The control drive circuit is connected to the light source board.

5. A novel wide-voltage LED tube according to claim 1, characterized in that: The end of the lamp tube is provided with a locking hole, and the outer wall of the plug is provided with a buckle protrusion; The plug is inserted into the lamp tube and the buckle protrusion is engaged in the buckle hole for positioning.

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