Judgment circuit, auxiliary power supply module, power supply module and LED lamp using same

Abstract

The utility model provides a judgment circuit, which comprises a first signal input end, a second signal input end and a third signal input end, the second signal input end is coupled to the mains supply alternating current; the two voltage dividing modules are respectively provided with a first voltage dividing point and a second voltage dividing point, the first voltage dividing module is coupled to the first signal input end, and the second voltage dividing module is coupled to the second signal input end; a first input port of the judgment module is coupled to the first voltage dividing point, a second input port of the judgment module is coupled to the second voltage dividing point, a resistor is arranged between a first output port and the second input port to form a feedback loop, and a judgment result is output through the first output port; one end of the buffer module is coupled to the first output port, the other end of the buffer module is coupled to a signal ground end, the end coupled to the first output port is coupled to the judgment signal output end, and the buffer module is used for adjusting the signal output state of the judgment signal output end, namely the on-off state. The utility model further provides an auxiliary power supply module, a power supply module and an LED lamp applying the auxiliary power supply module and the power supply module.

Description

Technical Field

[0001] This application relates to the technical field of lighting fixtures, specifically to a judgment circuit, an auxiliary power supply module, a power supply module, and LED lamps, flexible lamp panels, and lighting fixtures using the same. Background Technology

[0002] Due to the rapid development of LED lighting technology, it has gradually replaced traditional incandescent and fluorescent lamps. Compared to fluorescent lamps filled with inert gas and mercury, LED tube lights do not require mercury. Therefore, in various lighting systems for home or workplace use dominated by lighting options such as traditional fluorescent bulbs and tubes, LED tube lights have unsurprisingly become a highly anticipated lighting option. The advantages of LED tube lights include improved durability and lifespan, as well as lower energy consumption. Therefore, considering all factors, LED tube lights are a cost-effective lighting option.

[0003] An LED tube light typically includes a tube, a circuit board containing the light source inside the tube, and lamp holders at both ends of the tube. The lamp holders contain a power supply, and the light source and power supply are electrically connected via the circuit board. In practical applications, power outages or instability in the mains power supply can prevent the LED tube light's power supply from properly powering the LED module, resulting in an unstable power supply for the LED tube light.

[0004] Furthermore, to suit different application scenarios, LED lights are designed in multiple color temperature specifications to meet the needs of different customers. However, manufacturers often don't know which specific color temperature specification has the largest market demand, so they usually produce the same number of lights to sell. This results in significant resource waste and is detrimental to environmental sustainability. Additionally, if end customers are dissatisfied with the actual lighting effect and want to replace them with lights of a different color temperature, a complete replacement is necessary, incurring substantial costs.

[0005] When an LED tube light serves both general and emergency lighting functions, it needs to perform different actions based on the status of the external power supply signal and the external switch, such as turning the light on, turning it off, or entering emergency mode. This requires a mechanism to determine the LED's operating state based on the status of the external drive signal and the switch, while also ensuring convenient installation without concerns about installation orientation.

[0006] When it is necessary to determine the presence or absence of an external power signal, such as whether to activate the emergency mode, the general power supply detection circuit uses a voltage divider to obtain a voltage divider signal to determine the presence or absence of an external power signal. However, when the external power supply signal is a wide voltage, the voltage divider signal is also a wide voltage, which may exceed the operating voltage of the logic circuit. If a Zener diode is used for voltage regulation, the power consumption of the circuit will increase significantly.

[0007] LED emergency lights have at least three lighting modes: on, off, and emergency lighting activated. The driver circuit needs to be disabled during the normal off state. Emergency lighting is activated when the external power supply is interrupted. In current technology, a high-level signal is typically used to pull the power supply pin of the driver circuit control chip low during the off state. This can potentially cause flickering when the light is on and can prevent the main controller from entering sleep mode, increasing power consumption.

[0008] If the mains power supply circuit and the emergency power supply circuit in LED emergency lights are not isolated, crosstalk interference will occur, causing abnormal equipment operation. An isolated power supply architecture is generally used, but this architecture has a more complex circuit, occupies more space, and is more expensive.

[0009] To supply power to various loads, power conversion circuits are generally needed to convert the AC power supplied by the grid or other AC / DC power sources into the electrical energy required by each load. However, existing power conversion circuits can only convert power in one direction from input to output. As a result, in situations requiring bidirectional power supply, two power conversion circuits are needed, which greatly increases the complexity and cost of the circuit, and makes circuit integration and PCB layout difficult.

[0010] In practical applications, power outages or instability in the mains power supply may occur, preventing the LED tube light's power supply from properly powering the LED modules. In such cases, an additional auxiliary power supply is required to power the LED modules in the LED tube light. That is to say, when the mains power supply is normal, the auxiliary power supply needs to store electrical energy; when the mains power supply is abnormal, the auxiliary power supply needs to discharge, thus requiring the setting of two power conversion circuits, increasing the difficulty and cost of power supply layout.

[0011] When the auxiliary power supply supplies power to the LED module, it needs to perform a boost conversion to meet the power supply requirements of the LED module. When the output voltage of the energy storage unit in the auxiliary power supply is low, such as a single lithium-ion battery with an output voltage of 3.7-4.2V, the general boost power conversion circuit cannot meet the power supply requirements of the LED module. Therefore, a new boost power conversion circuit is needed.

[0012] Existing emergency light tubes, due to their relatively long power supply length, when installed in a regular LED straight tube light (i.e., using plastic or glass tubes), a significant portion of the power supply's length would be inserted into the tube when placed in the lamp holder, thus limiting the light output of the small tube. Therefore, existing emergency light tubes typically use aluminum-plastic composite tubes, consisting of a plastic light-transmitting cover and an aluminum base. The aluminum base has an internal space for housing the power supply. This type of emergency light tube has the following disadvantages: higher cost and more inconvenient installation; because the aluminum base occupies space in the width direction of the tube, the light output is poor, usually requiring a lens.

[0013] Existing emergency lamps, due to their added emergency function, have an increased number of electronic components, and the number of heat-generating elements may also increase accordingly. Therefore, power supply heat dissipation may become a problem, potentially affecting the lifespan of the entire lamp. A Chinese utility model patent with authorization announcement number CN 206409923 U, authorized on August 15, 2017, discloses an LED straight tube lamp, which includes a lamp tube, a lamp holder, a power supply, and an LED light board. The power supply is located inside the lamp holder, which includes at least one hole for heat dissipation. However, the power supply of this straight tube lamp does not have an emergency function, has a relatively small number of electronic components, and the heat generated during operation may be relatively low, eliminating the need to consider the power supply's obstruction of the convection path (hole). In other words, this straight tube lamp lacks a design to prevent the power supply from obstructing the convection path (hole). When the power supply structure becomes more complex and the number of electronic components increases, the relationship between the power supply and the heat dissipation hole in this straight tube lamp may not meet the heat dissipation requirements.

[0014] To meet the needs of different usage scenarios, existing light panels are designed as flexible panels, such as FPC (Flexible Printed Circuit) light panels. These flexible light panels can be bent into various shapes during use, such as circles, curves, and semicircles.

[0015] In existing flexible LED panels, copper foil is laid on the upper and lower surfaces to achieve electrical connection with the power supply and LED chips. However, when the flexible LED panel is bent, the copper foil also bends, making it prone to breakage in the bending area. This reduces the stability of the electrical connection between the flexible LED panel and the power supply or LED chips, affecting the normal illumination of the LED chips and reducing the lifespan of the flexible LED panel.

[0016] In view of the above problems, this application and its embodiments are presented below. Summary of the Invention

[0017] This abstract describes many embodiments of the present application. However, the term "the present application" is used only to describe certain embodiments disclosed in this specification (whether or not they are mentioned in the claims), and not a complete description of all possible embodiments. Certain embodiments of various features or aspects of the present application described below may be combined in different ways to form an LED tube light or a portion thereof.

[0018] This application proposes a judgment circuit for detecting switch state, comprising: a first signal input terminal coupled to AC mains power via the switch; a second signal input terminal coupled to the AC mains power; a voltage divider module, including a first voltage divider module and a second voltage divider module, each voltage divider module having a voltage divider point, namely a first voltage divider point and a second voltage divider point, wherein the first voltage divider module is coupled to the first signal input terminal, and the second voltage divider module is coupled to the second signal input terminal; a judgment module having a first input port, a second input port, a first output port, and a power supply port, wherein the first input port is coupled to the first voltage divider point, the second input port is coupled to the second voltage divider point, and a resistor is provided between the first output port and the second input port to form a feedback loop for logically judging the signal of the first input port and the signal of the second input port, and outputting the judgment result through the first output port; and a buffer module, one end of which is coupled to the first output port and the other end of which is coupled to a signal ground terminal, wherein the end coupled to the first output port is coupled to a judgment signal output terminal for adjusting the state of the signal output of the judgment signal output terminal, i.e., the switch state.

[0019] This application also proposes an auxiliary power supply module, comprising: an auxiliary power supply for storing electrical energy; a charging circuit electrically connected to the auxiliary power supply for charging the auxiliary power supply; a discharging circuit electrically connected to the auxiliary power supply for generating an auxiliary power supply signal; a power supply detection circuit, comprising an external signal detection module and the aforementioned judgment module, wherein the external signal detection module is electrically connected to an external power signal source for detecting the state of the external power signal, and the power supply detection circuit outputs a power supply detection signal; and a central processing unit electrically connected to the external signal detection module, the judgment module, the power supply detection circuit, the drive circuit, and the discharging circuit, for enabling or disabling the drive circuit and / or the discharging circuit according to the power supply detection signal, wherein the detection result of the external signal detection module has a higher priority than the detection result of the switch state detection module.

[0020] This application also proposes a power supply module, comprising: at least three pins, wherein a first pin is electrically connected to the live wire of AC mains power, a second pin is electrically connected to the neutral wire of AC mains power, and a third pin is electrically connected to the live wire of AC mains power via the switch; a rectifier circuit, electrically connected to the first pin and the second pin, for receiving external power signals and converting them into DC signals to generate rectified signals; a filter circuit, electrically connected to the rectifier circuit, for receiving the rectified signals and filtering them to generate filtered signals; a drive circuit, electrically connected to the filter circuit, for receiving the filtered signals and performing power conversion to generate the drive signal; and the aforementioned auxiliary power supply module, electrically connected to the filter circuit and the third pin, for receiving the filtered signals and generating the auxiliary power supply signal when the external power signal is abnormal or stops supplying power.

[0021] This application also proposes an LED lamp, comprising: a lamp tube; lamp holders disposed at both ends of the lamp tube; a lamp panel disposed inside the lamp tube; a power supply module electrically connected to the lamp panel for connecting to an external power source and generating a drive signal or an auxiliary power supply signal; and an LED module comprising at least one light-emitting diode, the LED module being electrically connected to the power supply module for receiving the drive signal or the auxiliary power supply signal to illuminate. Attached Figure Description

[0022] Figure 1A This is a schematic diagram of the main structure of an LED straight tube light in one embodiment;

[0023] Figure 1B for Figure 1A Enlarged view of point A in the image;

[0024] Figure 1C This is a cross-sectional structural schematic diagram of an LED straight tube light in one embodiment;

[0025] Figure 1D for Figure 1C Enlarged view of point B in the image;

[0026] Figure 1E A partial 3D schematic diagram of the power supply and lamp panel working together;

[0027] Figure 1F This is a cross-sectional view of an LED straight tube light in one embodiment;

[0028] Figure 1G This is a three-dimensional structural diagram of the lamp holder in one embodiment;

[0029] Figure 1H A 3D schematic diagram of a sliding button;

[0030] Figure 1I3D schematic diagram of the sliding button (II);

[0031] Figure 1J This is a schematic diagram showing the connection between the lamp holder and the emergency battery.

[0032] Figure 1K This is a schematic diagram showing the connection between the fixed unit and the emergency battery;

[0033] Figure 1L These are schematic diagrams illustrating the combination of the lamp holder, emergency battery, and fixing unit in some embodiments;

[0034] Figure 1M These are schematic diagrams illustrating the interaction between the emergency battery and the mounting unit in some embodiments;

[0035] Figure 1N These are three-dimensional structural diagrams of the fixing unit in some embodiments;

[0036] Figure 10 This is a schematic diagram of the lamp board separated from the first circuit board in one embodiment, showing the front of the lamp board and the first side of the circuit board;

[0037] Figure 1P This is a schematic diagram of the lamp board separated from the first circuit board in one embodiment, showing the back of the lamp board and the second side of the circuit board;

[0038] Figure 1Q This is a schematic diagram of the lamp board and the first circuit board in one embodiment, showing the front of the lamp board and the first side of the circuit board;

[0039] Figure 1R This is a schematic diagram of the lamp board and the first circuit board in one embodiment, showing the front of the lamp board and the first side of the circuit board;

[0040] Figure 1S This is a cross-sectional schematic diagram of the lamp board and the first circuit board in one embodiment;

[0041] Figure 1T These are cross-sectional schematic diagrams showing the interaction between the lamp board and the first circuit board in some embodiments;

[0042] Figure 1U This is a three-dimensional structural schematic diagram of the power supply in one embodiment;

[0043] Figure 2A This is a three-dimensional structural schematic diagram of an LED lamp in one embodiment;

[0044] Figure 2B This is a three-dimensional structural diagram of an LED light with its cover removed, according to one embodiment.

[0045] Figure 2C yes Figure 2B Enlarged view of point C in the image;

[0046] Figure 2D This is a schematic diagram of the three-dimensional structure of the circuit board, light source, and power supply working together;

[0047] Figure 2E This is a schematic diagram of the three-dimensional structure of the circuit board, light source, and power supply working together;

[0048] Figure 3A This is a three-dimensional structural schematic diagram of a lighting system in one embodiment;

[0049] Figure 3B This is a schematic diagram showing the assembly of a straight tube lamp, lamp holder, and mounting unit;

[0050] Figure 3C yes Figure 3B Enlarged view of point D in the image;

[0051] Figure 3D It is a partial sectional view of the assembly of the straight tube lamp, lamp holder and fixing unit;

[0052] Figure 3E This is a schematic diagram of a three-dimensional structure of a fixed unit;

[0053] Figure 3F This is a schematic diagram of the three-dimensional structure of a fixed unit (Figure 2).

[0054] Figure 3G This is a partial schematic diagram of the lamp holder;

[0055] Figure 3H This is a schematic diagram of the three-dimensional structure of the lamp holder;

[0056] Figure 3I This is a schematic diagram of the three-dimensional structure of the second component;

[0057] Figure 3J This is a schematic diagram of the three-dimensional structure of the second component;

[0058] Figure 3K This is a schematic diagram of the three-dimensional structure of the first component;

[0059] Figure 3L This is a schematic diagram of the three-dimensional structure of the first component;

[0060] Figure 4A This is a schematic diagram of the main structure of an LED straight tube light in one embodiment;

[0061] Figure 4B yes Figure 4A Enlarged view at point E in the middle;

[0062] Figure 4C This is a three-dimensional structural schematic diagram of an LED straight tube light in one embodiment;

[0063] Figure 4D yes Figure 4C Enlarged view of point F in the image;

[0064] Figure 4E This is a three-dimensional structural schematic diagram of an LED straight tube light in one embodiment;

[0065] Figure 4F yes Figure 4E Enlarged view of point G in the image;

[0066] Figure 4G This is a schematic diagram of the three-dimensional structure of one of the lamp holders;

[0067] Figure 4H This is a schematic diagram of the main structure of one of the lamp heads;

[0068] Figure 4I yes Figure 4H The right view;

[0069] Figure 4J This is a schematic diagram of the main structure of an LED straight tube light in one embodiment;

[0070] Figure 5A This is a three-dimensional structural schematic diagram of an LED straight tube light in one embodiment;

[0071] Figure 5B yes Figure 5A Enlarged view of point H in the image;

[0072] Figure 5C This is a schematic diagram of the exploded structure of a fixed unit;

[0073] Figure 5D It is a three-dimensional structural diagram of a fixed unit;

[0074] Figure 6 A cross-sectional view of the mounting unit and the lamp holder in conjunction;

[0075] Figure 7 A three-dimensional structural diagram of the first component;

[0076] Figure 8 This is a three-dimensional structural diagram of the second component;

[0077] Figure 9A This is a circuit block diagram of the power module according to the first embodiment of this application;

[0078] Figure 9B This is a circuit block diagram of the power module according to the second embodiment of this application;

[0079] Figure 9C This is a circuit block diagram of the power module according to the third embodiment of this application;

[0080] Figure 10AThis is a schematic diagram of the circuit architecture of the LED module according to the first embodiment of this application;

[0081] Figure 10B This is a schematic diagram of the circuit architecture of the LED module according to the second embodiment of this application;

[0082] Figure 10C This is a schematic diagram of the wiring of the LED module according to the first embodiment of this application;

[0083] Figure 10D This is a schematic diagram of the wiring of the LED module according to the second embodiment of this application;

[0084] Figure 10E This is a schematic diagram of the wiring of the LED module according to the third embodiment of this application;

[0085] Figure 10F This is a schematic diagram of the wiring of the LED module according to the fourth embodiment of this application;

[0086] Figure 10G This is a schematic diagram of the LED module according to the fifth embodiment of this application;

[0087] Figure 10H This is a schematic diagram of the wiring of the LED module according to the sixth embodiment of this application;

[0088] Figure 10I This is a schematic diagram of the LED module according to the seventh embodiment of this application;

[0089] Figure 10J This is a schematic diagram of the circuit architecture of the LED module according to the third embodiment of this application;

[0090] Figure 10K This is a schematic diagram of the circuit structure of the switching circuit according to the first embodiment of this application;

[0091] Figure 10L This is a schematic diagram of the circuit structure of the switching circuit according to the second embodiment of this application;

[0092] Figure 10M This is a schematic diagram of the circuit structure of a switching circuit according to another embodiment of this application;

[0093] Figure 11A This is a schematic diagram of the circuit architecture of the rectifier circuit according to the first embodiment of this application;

[0094] Figure 11B This is a schematic diagram of the circuit architecture of the rectifier circuit according to the second embodiment of this application;

[0095] Figure 11C This is a schematic diagram of the circuit architecture of the rectifier circuit according to the third embodiment of this application;

[0096] Figure 11DThis is a schematic diagram of the circuit architecture of the rectifier circuit according to the fourth embodiment of this application;

[0097] Figure 11E This is a schematic diagram of the circuit architecture of the rectifier circuit according to the fifth embodiment of this application;

[0098] Figure 11F This is a schematic diagram of the circuit architecture of the rectifier circuit according to the sixth embodiment of this application;

[0099] Figure 12A This is a circuit block diagram of the filter circuit according to the first embodiment of this application;

[0100] Figure 12B This is a schematic diagram of the circuit architecture of the filter unit in the first embodiment of this application;

[0101] Figure 12C This is a schematic diagram of the circuit architecture of the filter unit according to the second embodiment of this application;

[0102] Figure 13A This is a circuit block diagram of the driving circuit according to the first embodiment of this application;

[0103] Figure 13B This is a schematic diagram of the circuit architecture of the driving circuit according to the first embodiment of this application;

[0104] Figure 13C This is a schematic diagram of the circuit architecture of the driving circuit according to the second embodiment of this application;

[0105] Figure 13D This is a schematic diagram of the circuit architecture of the driving circuit according to the third embodiment of this application;

[0106] Figure 13E This is a schematic diagram of the circuit architecture of the driving circuit according to the fourth embodiment of this application;

[0107] Figure 13F This is a schematic diagram of the circuit architecture of a driving circuit according to another embodiment of this application;

[0108] Figure 14A This is a schematic diagram of the signal waveforms of the driving circuit according to the first embodiment of this application;

[0109] Figure 14B This is a schematic diagram of the signal waveform of the driving circuit according to the second embodiment of this application;

[0110] Figure 15A This is a schematic diagram of the signal waveforms of the driving circuit according to the third embodiment of this application;

[0111] Figure 15B This is a schematic diagram of the signal waveforms of the driving circuit according to the fourth embodiment of this application;

[0112] Figure 16AThis is a circuit block diagram of the power module according to the sixth embodiment of this application;

[0113] Figure 16B This is a circuit block diagram of the power module according to the seventh embodiment of this application;

[0114] Figure 16C This is a schematic diagram of the circuit architecture of an auxiliary power supply module according to an embodiment of this application;

[0115] Figure 16D This is a circuit block diagram of the power module according to the eighth embodiment of this application;

[0116] Figure 16E This is a circuit block diagram of the auxiliary power supply module according to the first embodiment of this application;

[0117] Figure 16F This is a circuit block diagram of the power module according to the ninth embodiment of this application;

[0118] Figure 16G This is a circuit block diagram of the auxiliary power supply module according to the second embodiment of this application;

[0119] Figure 16H This is a circuit block diagram of the auxiliary power supply module according to the third embodiment of this application;

[0120] Figure 16I This is a schematic diagram of the configuration of the auxiliary power supply module according to the first embodiment of this application;

[0121] Figure 16J This is a schematic diagram of the configuration of the auxiliary power supply module according to the second embodiment of this application;

[0122] Figure 16K This is a circuit block diagram of the LED straight tube lighting system according to the sixth embodiment of this application;

[0123] Figure 16L This is a circuit block diagram of the LED straight tube lighting system according to the seventh embodiment of this application;

[0124] Figure 16M This is a circuit block diagram of the LED straight tube lighting system according to the eighth embodiment of this application;

[0125] Figure 16N This is a schematic diagram of the circuit architecture of the auxiliary power supply module according to the first embodiment of this application;

[0126] Figure 16O This is a schematic diagram of the circuit architecture of the auxiliary power supply module according to the second embodiment of this application;

[0127] Figure 16P This is a signal timing diagram of the auxiliary power supply module in normal state according to an embodiment of this application;

[0128] Figure 16Q This is a signal timing diagram of an auxiliary power supply module in an abnormal state according to an embodiment of this application;

[0129] Figure 16R This is a circuit block diagram of the power module according to the seventeenth embodiment of this application;

[0130] Figure 16S This is a circuit block diagram of the discharge circuit according to the first embodiment of this application;

[0131] Figure 16T This is a circuit block diagram of the power module according to the eighteenth embodiment of this application;

[0132] Figure 16U This is a circuit block diagram of the power supply detection circuit according to the first embodiment of this application;

[0133] Figure 16V The diagram shown is a circuit block diagram of the power module according to the nineteenth embodiment of this application;

[0134] Figure 16W The diagram shown is a circuit block diagram of the main power supply device according to the first embodiment of this application;

[0135] Figure 16X This is a schematic diagram showing the positional relationship between the trigger switch and the main power supply device according to the first embodiment of this application;

[0136] Figure 16Y This is a circuit block diagram of the state detection circuit according to the first embodiment of this application;

[0137] Figure 17A This is a circuit block diagram of an LED straight tube lamp according to the fifteenth embodiment of this application;

[0138] Figure 17B This is a circuit block diagram of an LED lamp according to another embodiment of this application;

[0139] Figure 17C This is a schematic diagram of the circuit structure of the drive control circuit in one embodiment of this application;

[0140] Figure 17D This is a partial circuit block diagram of an LED lamp according to an embodiment of this application;

[0141] Figure 17E This is a schematic diagram of the circuit structure of a power switching circuit according to one embodiment of the application;

[0142] Figure 17F This is a schematic diagram of the circuit structure of a power switching circuit according to another embodiment of this application;

[0143] Figure 17GThis is a schematic diagram of the circuit structure of a power switching circuit according to another embodiment of this application;

[0144] Figure 17H This is a schematic diagram of the circuit structure of a power switching circuit according to another embodiment of this application;

[0145] Figure 17I This is a schematic diagram of the circuit structure of a power switching circuit according to another embodiment of this application;

[0146] Figure 17J This is a schematic diagram of the circuit structure of a power switching circuit according to another embodiment of this application;

[0147] Figure 18A This is a schematic diagram of the circuit structure of a power supply detection circuit according to an embodiment of this application;

[0148] Figure 18B This is a schematic diagram of the circuit structure of a power supply detection circuit according to another embodiment of this application;

[0149] Figure 18C This is a circuit block diagram of a power supply detection circuit according to another embodiment of this application;

[0150] Figure 19A This is a circuit block diagram of an auxiliary power supply module according to an embodiment of this application;

[0151] Figure 19B This is a circuit block diagram of a power conversion circuit in one embodiment of this application;

[0152] Figure 19C This is a circuit block diagram of a power conversion circuit in one embodiment of this application;

[0153] Figures 19D to 19F This is a schematic diagram of the circuit architecture of a power conversion circuit in one embodiment of this application;

[0154] Figures 19G to 19I This is a schematic diagram of the circuit architecture of a power conversion circuit in another embodiment of this application;

[0155] Figure 19J This is a circuit block diagram of a power conversion circuit in one embodiment of this application;

[0156] Figure 19K This is a circuit block diagram of a power conversion circuit in one embodiment of this application;

[0157] Figure 19L This is a schematic diagram of the circuit architecture of a power conversion circuit in one embodiment of this application;

[0158] Figure 19M This is a schematic diagram of the circuit architecture of a power conversion circuit in one embodiment of this application;

[0159] Figure 20A This is a circuit block diagram of an LED lamp according to another embodiment of this application;

[0160] Figure 20B This is a circuit module schematic diagram of a switch state detection module according to an embodiment of this application;

[0161] Figure 20C This is a schematic diagram of the circuit architecture of a switch state detection module according to an embodiment of this application;

[0162] Figure 20D This is a schematic diagram of the circuit architecture of a switch state detection module according to another embodiment of this application;

[0163] Figure 20E This is a schematic diagram of multiple lights connected in parallel;

[0164] Figure 21A This is a cross-sectional structure of a flexible light panel according to an embodiment of this application;

[0165] Figure 21B This is a partial structure of a flexible light panel according to an embodiment of this application. Detailed Implementation

[0166] This application proposes a novel LED straight tube light to solve the problems mentioned in the background art and the aforementioned problems. To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, specific embodiments of this application are described in detail below with reference to the accompanying drawings. The following descriptions of various embodiments of this application are for illustrative purposes only and do not represent all embodiments of this application or limit this application to specific embodiments. Furthermore, the same component numbers can be used to represent the same, corresponding, or similar components, and are not limited to representing only the same components.

[0167] It should also be noted that, in order to clearly illustrate the various features of the invention disclosed herein, multiple embodiments are described below. However, this does not mean that each embodiment can only be implemented individually. Those skilled in the art can design feasible embodiments by combining them together as needed, or replace interchangeable components / modules in different embodiments according to design requirements. In other words, the implementation methods taught in this case are not limited to the forms described in the following embodiments, but also include, where feasible, substitutions and arrangements between various embodiments / components / modules, which are described in advance.

[0168] Although the applicant has proposed an improvement method for reducing leakage accidents by using flexible circuit boards in previous cases, such as CN105465640U, some embodiments can be combined with the circuit method of this application to have more significant effects.

[0169] See Figures 1A to 1I In one embodiment, an LED straight tube light is provided, comprising a tube 1a, a light panel 2a, a lamp holder 3a, and a power supply 5a. The light panel 2a is disposed within the tube 1a, and a light source 202a is disposed on the light panel 2a. Two lamp holders 3a are provided, respectively located at both ends of the tube 1a. The tube 1a can be a plastic tube or a glass tube, and the two lamp holders 3a can be the same or different in size (here, the size of the lamp holder 3a refers to its length along the length of the tube 1a). In this embodiment, the light source 202a is an LED chip. The LED straight tube light in this embodiment can be a T8 emergency straight tube light, which has an emergency battery to provide power when the external power supply is cut off, thereby continuing to illuminate the LED straight tube light.

[0170] See Figures 1C to 1E In one embodiment, the power supply 5a includes a first circuit board 51a, a second circuit board 52a, and electronic components 53a. The lamp board 2a is connected to the first circuit board 51a, and the first circuit board 51a is electrically connected to the second circuit board 52a. Both the first circuit board 51a and the second circuit board 52a are equipped with electronic components 53a. Both the first circuit board 51a and the second circuit board 52a extend along the length of the lamp tube 1a, and at least partially overlap in the radial projection direction of the lamp tube 1a. This reduces the overall length of the power supply 5a, and when the power supply 5a is located at the lamp holder 3a, it reduces the length of the dark area formed by the LED straight tube lamp. In one embodiment, at least 60%, 65%, 70%, or 75% of the length of the power supply 5a can be controlled to be located inside the lamp holder 3a. In contrast, existing emergency lamp tubes are typically aluminum-plastic tubes, meaning the tube includes a plastic light-transmitting cover and an aluminum base, with the power supply located inside the base (the power supply is actually located inside the lamp tube). Compared with the prior art, this embodiment has a simpler structure, and the lamp tube 1a is a one-piece glass tube, resulting in better light output.

[0171] In one embodiment, the length of the second circuit board 52a is configured to be at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, or 85% of the length of the first circuit board 51a. In one embodiment, when the second circuit board 52a is projected onto the plane containing the first circuit board 51a, more than 80% of the length of the second circuit board 52a is within the length range defined by the first circuit board 51a. In one embodiment, when the second circuit board 52a is projected onto the plane containing the first circuit board 51a, more than 90% of the length of the second circuit board 52a is within the length range defined by the first circuit board 51a. In one embodiment, when the second circuit board 52a is projected onto the plane containing the first circuit board 51a, the entire length of the second circuit board 52a is within the length range defined by the first circuit board 51a. This maximizes the reduction of the length of the power supply 5a while ensuring sufficient space for the arrangement of electronic components 53a. In addition, since the second circuit board 52a is located entirely within the length range defined by the first circuit board 51a in the length direction, the projection plane of the wiring layer of the second circuit board 52a is approximately within the planar area of ​​the first circuit board 51a, which prevents the occurrence of "edge radiation" problems and controls differential mode radiation.

[0172] In one embodiment, a gap exists between the first circuit board 51a and the second circuit board 52a to form an accommodating space 501a (i.e., an accommodating space 501a is formed between the first circuit board 51a and the second circuit board 52a). The ratio of the height of the accommodating space 501a to the inner diameter of the lamp holder 3a is 0.25 to 0.5 to ensure sufficient space to accommodate electronic components. At least a portion of the electronic components 53a on the first circuit board 51a are disposed within the accommodating space 501a, and at least a portion of the electronic components 53a on the second circuit board 52a are disposed within the accommodating space 501a. In some embodiments, relatively large electronic components 53a (such as transformers, capacitors, inductors, etc.) can be disposed within the accommodating space 501a, thereby achieving a more reasonable space utilization. In some embodiments, heat-generating components (such as ICs, resistors, transformers) can be disposed within the accommodating space 501a to achieve a more reasonable distribution of heat-generating components. In some embodiments, at least one electronic component 53a of the first circuit board 51a in the accommodating space 501a and at least one electronic component 53a of the second circuit board 52a in the accommodating space 501a at least partially overlap in the radial direction or the width direction of the lamp holder 3a. This allows the electronic components 53a in the accommodating space to be arranged more compactly, increasing the number of electronic components 53a per unit length of the accommodating space, thereby reducing the overall required length of the power supply 5a. Furthermore, when the projections of the electronic components 53a of the first circuit board 51a and the second circuit board 52a within the accommodating space 501a in the radial direction or the width direction of the lamp holder 3a at least partially overlap, the sum of the heights of the electronic components 53a of the first circuit board 51a and the second circuit board 52a within the accommodating space 501a is less than half the height of the accommodating space 501a. This prevents the two electronic components 53a from influencing each other (e.g., thermal effects or electrical interference). Additionally, under this condition, sufficient gaps are ensured between the electronic components 53a of the first circuit board 51a and the corresponding electronic components 53a of the second circuit board 52a within the accommodating space 501a for convection heat dissipation. In one embodiment, electronic components 53a are disposed on both sides of the first circuit board 51a, and similarly, electronic components 53a are disposed on both sides of the second circuit board 52a.

[0173] See Figure 1D , Figure 1E and Figure 1UIn one embodiment, the first circuit board 51a has a first surface 512a and an opposing second surface 513a, and electronic components 53a are disposed on both the first surface 512a and the second surface 513a of the first circuit board 51a. The second circuit board 52a has a front surface 521a and an opposing back surface 522a, and electronic components 53a are disposed on both the front surface 521a and the back surface 522a of the second circuit board 52a. The first surface 512a of the first circuit board 51a and the front surface 521a of the second circuit board 52a define the height of the accommodating space 501a. A relatively tall electronic component (the height of the electronic component is at least half the height of the accommodating space 501a, and it may be a capacitor, transformer, or inductor) is disposed on the first surface 512a of the first circuit board 51a, and no electronic component is disposed on the front surface of the second circuit board 52a corresponding to the electronic component. In other words, when an electronic component whose height on the first surface 512a of the first circuit board 51a exceeds half the height of the accommodating space 501a is projected onto the second circuit board 52a, it does not correspond to or overlap with any electronic component on the second circuit board 52a. This prevents mutual interference (such as thermal effects or electrical interference) between electronic components. The electronic component whose height on the first surface 512a of the first circuit board 51a exceeds half the height of the accommodating space 501a can be a transformer, an electrolytic capacitor, or an inductor. When the electronic component whose height on the first surface 512a of the first circuit board 51a exceeds half the height of the accommodating space 501a is a transformer, the above arrangement prevents the heat generated during transformer operation from affecting the corresponding electronic component on the second circuit board 52a. When the electronic component whose height on the first surface 512a of the first circuit board 51a exceeds half the height of the accommodating space 501a is a transformer or an inductor, the above arrangement prevents the heat generated during transformer operation from affecting the corresponding electronic component on the second circuit board 52a. When the electronic component whose height exceeds half the height of the accommodating space 501a on the first surface 512a of the first circuit board 51a is an electrolytic capacitor, the above-mentioned arrangement can prevent the electrolytic capacitor from being subjected to electromagnetic interference from the corresponding electronic component on the second circuit board 52a.

[0174] In one embodiment, multiple filter components (capacitors) are disposed on a first circuit board 51a and located within a accommodating space 501a. On the one hand, the accommodating space 501a provides sufficient space to accommodate the filter components (which may be large in size or height). On the other hand, placing multiple filter components side by side within the accommodating space 501a can prevent the filtered circuit from being interfered with again.

[0175] In one embodiment, the first circuit board 51a and the second circuit board 52a are connected by a fixing unit 4a to fix the first circuit board 51a and the second circuit board 52a relatively as a whole, preventing them from shaking relative to each other. The fixing unit 4a includes a first connecting plate 41a and a second connecting plate 42a. The first circuit board 51a and the second circuit board 52a are fixed on one side along the length of the lamp holder 3a by the first connecting plate 41a, and the other side along the length of the lamp holder 3a by the second connecting plate 42a. Further, the first connecting plate 41a is connected to the first circuit board 51a and the second circuit board 52a at both ends by welding. The second connecting plate 42a is also connected to the first circuit board 51a and the second circuit board 52a at both ends by welding. Furthermore, positioning holes are provided on both the first circuit board 51a and the second circuit board 52a. The two ends of the first connecting plate 41a are respectively inserted into the positioning holes on the first circuit board 51a and the second circuit board 52a for positioning, and the two ends of the second connecting plate 42a are respectively inserted into the positioning holes on the first circuit board 51a and the second circuit board 52a for positioning, thereby making it easier to install and fix.

[0176] In one embodiment, the first connecting plate 41a may be a circuit board, so that the first circuit board 51a and the second circuit board 52a are electrically connected through the first connecting plate 41a. Similarly, the second connecting plate 42a may also be a circuit board, so that the first circuit board 51a and the second circuit board 52a are electrically connected through the first connecting plate 41a. In one embodiment, one of the first connecting plate 41a and the second connecting plate 42a is a circuit board to electrically connect the first circuit board 51a and the second circuit board 52a. In another embodiment, both the first connecting plate 41a and the second connecting plate 42a are circuit boards to electrically connect the first circuit board 51a and the second circuit board 52a, thereby facilitating a more convenient and reasonable circuit layout.

[0177] In one embodiment, an electronic component 53a may be disposed on the first connecting plate 41a. In another embodiment, an electronic component 53a may be disposed on the second connecting plate 42a. That is, an electronic component 53a may be disposed on the first connecting plate 41a and / or the second connecting plate 42a.

[0178] In one embodiment, the second connecting plate 42a is provided with electronic components 53a on both sides of the lamp head 3a along its length, and the electronic component 53a on one side is located in the aforementioned accommodating space 501a, thereby improving space utilization.

[0179] See Figure 1D , Figure 1E and Figure 1UThe second connecting plate 42a also serves as an isolation element. Specifically, electronic components are arranged on both sides of the first circuit board 51a and the second connecting plate 42a. A heat-generating element (such as an inductor, resistor, or transformer) is arranged on one side of the first circuit board 51a and the second connecting plate 42a, while a fuse, a heat-sensitive component (such as an electrolytic capacitor), or a heat-generating component (IC or resistor) is arranged on the other side of the first circuit board 51a and the second connecting plate 42a. When a fuse is arranged on the other side of the first circuit board 51a and the second connecting plate 42a, the second connecting plate 42a provides thermal isolation, preventing heat radiation from the heat-generating component on one side of the first circuit board 51a and the second connecting plate 42a from reaching the fuse and affecting its performance. Similarly, when a heat-sensitive component is arranged on the other side of the first circuit board 51a and the second connecting plate 42a, the second connecting plate 42a provides thermal isolation, preventing heat radiation from the heat-generating component on one side of the first circuit board 51a and the second connecting plate 42a from reaching the heat-sensitive component and affecting its performance and lifespan. When a heating element is disposed on the other side of the first circuit board 51a on the second connecting plate 42a, the second connecting plate 42a can play a role in thermal isolation, preventing the heating element on one side of the first circuit board 51a from affecting the heating element on the other side and forming a local high temperature.

[0180] See Figures 1D to 1G The lamp holder 3a has heat dissipation holes 302a on its end wall for at least heat dissipation of the electronic components of the power supply 5a inside the lamp holder 3a. In this embodiment, the second connecting plate 42a (compared to the first connecting plate 41a or the accommodating space 501a) is closer to the heat dissipation holes 302a of the lamp holder 3a. The width of the second connecting plate 42a (or the width at its widest point) is smaller than the width (width at its widest point) of the first circuit board 51a and / or the second circuit board 52a, so as to reduce the obstruction of the convection path from the accommodating space 501a to the heat dissipation holes 302a by the second connecting plate 42a, and ensure the smoothness of convection from the accommodating space 501a to the heat dissipation holes 302a.

[0181] In one embodiment, the ratio of the cross-sectional area of ​​the second connecting plate 42a (the area of ​​the cross-section along the convection path from the accommodating space 501a to the heat dissipation hole 302a or in the axial direction of the lamp holder 3a) to the cross-sectional area inside the lamp holder 3a does not exceed 50%, so as to reduce the obstruction of the second connecting plate 42a on the convection path from the accommodating space 501a to the heat dissipation hole 302a. In some embodiments, the ratio of the cross-sectional area of ​​the second connecting plate 42a (the area of ​​the cross-section along the convection path from the accommodating space 501a to the heat dissipation hole 302a or in the axial direction of the lamp holder 3a) to the cross-sectional area inside the lamp holder 3a does not exceed 45%, so as to reduce the obstruction of the second connecting plate 42a on the convection path from the accommodating space 501a to the heat dissipation hole 302a. In some embodiments, the ratio of the cross-sectional area of ​​the second connecting plate 42a (the area of ​​the cross-section along the convection path from the accommodating space 501a to the heat dissipation hole 302a or in the axial direction of the lamp holder 3a) to the cross-sectional area inside the lamp holder 3a is greater than 20%, so as to ensure that the second connecting plate 42a has sufficient structural strength to provide support and fixation for the first circuit board 51a and the second circuit board 52a.

[0182] The first circuit board 51a and the second circuit board 52a divide the interior of the lamp holder 3a into approximately three parts: a first space 502a, a receiving space 501a, and a second space 503a. Specifically, the first space 502a is the space between the second surface 513a (the plane containing the second surface 513a) of the first circuit board 51a and the inner wall of the lamp holder 3a; the receiving space 501a is the space between the first surface 512a (the plane containing the first surface 512a) of the first circuit board 51a and the front surface 521a (the plane containing the front surface 521a) of the second circuit board 52a within the lamp holder 3a; and the second space 503a is the space between the back surface 522a (the plane containing the back surface 522a) of the second circuit board 52a and the inner wall of the lamp holder 3a. In one embodiment, the heat generated by the electronic components in the accommodating space 501a during operation is greater than the heat generated by the electronic components in the first space 502a or the second space 503a, and the volume of the accommodating space 501a is greater than the volumes of the first space 502a and the second space 503a, so that it has a larger space to better convective heat dissipation for the electronic components inside. In one embodiment, the heat generated by the electronic components in the first space 502a or the second space 503a when they are working is greater than the heat generated by the electronic components in the accommodating space 501a when they are working. The area of ​​the heat dissipation hole 302a corresponding to the first space 502a or the second space 503a is greater than the area of ​​the heat dissipation hole 302a corresponding to the accommodating space 501a (that is, when the first space 502a or the second space 503a is projected onto the end wall of the lamp holder 3a, the area of ​​the heat dissipation hole 302a covered is greater than the area of ​​the heat dissipation hole 302a covered when the accommodating space 501a is projected onto the end wall of the lamp holder 3a), so as to better dissipate heat in the first space 502a or the second space 503a by convection.

[0183] In one embodiment, the first circuit board 51a is connected to the lamp board 2a. In another embodiment, the first circuit board 51a and the lamp board 2a are directly connected by soldering. Specifically, one end of the first circuit board 51a extends beyond the second circuit board 52a along the length of the lamp tube 1a, thereby forming a connecting portion 511a, which is directly soldered to the lamp board 2a. A solder pad 5111a is provided on the connecting portion 511a, and the connecting portion 511a is fixed to the lamp board 2a and electrically connected through the solder pad 5111a. In this embodiment, the lamp board 2a can be a flexible circuit board or a flexible substrate.

[0184] In one embodiment, the pad 5111a is disposed on the front side of the first circuit board 51a (the side facing the second circuit board 52a), a portion of the lamp board 2a is fixed to the inner surface of the lamp tube 1a, and both ends of the lamp board 2a are formed in the free portion 21a which is not fixed to the surface of the lamp tube 1a. The ends of the free portion 21a are located on the front side of the first circuit board 51a and are soldered and fixed to the pad 5111a on the connecting portion 511a.

[0185] In one embodiment, a portion of the free portion 21a is located on the opposite side (the side opposite to the front) of the first circuit board 51a. In another embodiment, the opposite side of the first circuit board 51a presses against the portion of the free portion 21a, and the opposite side of the corresponding free portion 21a does not have the electronic component 53a or the pins of the electronic component 53a.

[0186] In one embodiment, the end of the first connecting plate 41a passes through the first circuit board 51a and exposes its end on the reverse side of the first circuit board 51a. The end of the first connecting plate 41a abuts against the free portion 21a so that at least a portion of the free portion 21a maintains a distance from the reverse side of the first circuit board 51a, preventing the surface of the first circuit board 51a from scratching the free portion 21a, and preventing the free portion 21a from shaking.

[0187] like Figures 1C to 1E As shown, in one embodiment, the power supply 5a can be disposed in one of the lamp holders 3a (at least 65% of the length of the power supply 5a is located in the lamp holder, which means the power supply 5a is considered to be located in the lamp holder 3a). The internal volume of the lamp holder 3a is a, and the volume of the power supply 5a (the part located inside the lamp holder 3a) is b. The ratio of b to a is at least 20% to make full use of the internal space of the lamp holder 3a, so that the power supply 5a does not occupy the space inside the lamp tube 1a as much as possible, and prevents the power supply 5a from affecting the light output of the lamp tube 1a.

[0188] like Figures 1C to 1EAs shown, in one embodiment, the total length of the power supply 5a (length along the axial direction of the lamp tube 1a) is L (in millimeters), and the number of components included in the power supply 5a is X (components include electronic components and circuit boards). The number of components distributed per unit length (per millimeter) of the power supply 5a exceeds 0.5, i.e., X / L > 0.5. In one embodiment, the number of components distributed per unit length (per millimeter) of the power supply 5a exceeds 0.6, i.e., X / L > 0.6. In another embodiment, the number of components distributed per unit length (per millimeter) of the power supply 5a exceeds 0.7, i.e., X / L > 0.7. This arrangement allows the components of the power supply 5a to be more compactly arranged along its length, thereby reducing the overall length of the power supply 5a.

[0189] See Figures 1A to 1I In one embodiment, a reset switch 5301a and a color temperature selection switch 5302a are provided on the side of the second circuit board 52a facing the lamp holder 3a. Since the reset switch 5301a and the color temperature selection switch 5302a need to correspond to corresponding components on the lamp holder 3a, their positions must be fixed relative to the lamp holder 3a. In one embodiment, a second slot 32a may be provided on the inner wall of the lamp holder 3a, and the side of the second circuit board 52a is fixed by engaging the second slot 32a. In another embodiment, a first slot 31a may be provided on the inner wall of the lamp holder 3a, and the side of the first circuit board 51a is fixed by engaging the first slot 31a. Since the first circuit board 51a and the second circuit board 52a are fixed as one unit, the first slot 31a may not be provided here. In one embodiment, a first slot 31a and a second slot 32a are provided on the inner wall of the lamp holder 3a. Since the first circuit board 51a and the second circuit board 52a are fixed by the first slot 31a and the second slot 32a respectively, the aforementioned fixing unit 4a may not be provided. In this embodiment, a limiting part may be provided in the first slot 31a (for example, the bottom of one end of the first slot 31a in the length direction of the lamp holder 3a constitutes the limiting part). When the second circuit board 52a is inserted into the first slot 31a until it abuts against the limiting part, the reset switch 5301a and the color temperature selection switch 5302a are aligned with the corresponding components on the lamp holder 3a.

[0190] In one embodiment, a button 33a is provided on the lamp holder 3a, and the position of the button 33a corresponds to the reset switch 5301a. The button 33a and the lamp holder 3a are integrally formed, which simplifies the structure.

[0191] Furthermore, the button 33a includes a pressing part 331a and an arm part 332a. The arm part 332a is connected to the body of the lamp holder 3a, while the pressing part 331a is connected to the arm part 332a. In this embodiment, the pressing part 331a is configured as a circle, and it is connected to the body of the lamp holder 3a only through the arm part 332a.

[0192] In one embodiment, a groove 34a is provided on the lamp holder 3a to form the aforementioned pressing part 331a and arm part 332a. This groove 34a serves two purposes: firstly, it forms the pressing part 331a and arm part 332a; secondly, it can form a heat dissipation hole, allowing at least a portion of the heat generated when the power supply 5a is operating to dissipate from the groove 34a. The groove 34a can be formed directly during the molding of the lamp holder 3a.

[0193] In one embodiment, a sliding button 35a is provided on the lamp holder 3a, and the sliding button 35a is connected to the color temperature selection switch 5302a. Specifically, the sliding button 35a includes a body 351a, a sliding part 352a, and a connecting part 353a. The body 351a is exposed outside the lamp holder 3a, the sliding button 35a is slidably connected to the lamp holder 3a through the sliding part 352a, and the connecting part 353a is connected to the color temperature selection switch 5302a.

[0194] In one embodiment, the sliding part 352a includes a buckle 3521a, and a hole 36a is formed on the lamp head 3a. The buckle 3521a is fastened to the hole 36a and cooperates with the wall of the lamp head 3a at the outer edge of the hole 36a. A groove 3522a is formed between the buckle 3521a and the sheet 351a, and the groove 3522a is in sliding cooperation with the wall of the lamp head 3a.

[0195] In one embodiment, the color temperature selection switch 5302a includes a columnar body, and the connecting part 353a includes a mounting hole 3531a, into which the columnar body is inserted for fixation.

[0196] In one embodiment, a plurality of ribs 3511a are provided on the surface of the sheet 351a, thereby increasing the friction during operation.

[0197] In one embodiment, a limiting groove 37a is provided on the surface of the lamp holder 3a, and at least a portion of the sheet 351a in the thickness direction is accommodated within the limiting groove 37a. The limiting groove 37a limits the range of sliding of the sheet 351a relative to the lamp holder 3a, preventing damage to related components due to excessive force.

[0198] In one embodiment, an indicator light 54a may be provided on the power supply 5a to indicate the status of the LED tube light. A hole 38a is provided on the lamp holder 3a to allow light from the indicator light 54a to pass through. In this embodiment, the sheet 351a is made of a transparent material (such as acrylic), and the sheet 351a covers the hole 38a while allowing light from the indicator light 54a to pass through. The sheet 351a serves two purposes: protecting the indicator light 54a and preventing it from obstructing the light emitted by the indicator light 54a.

[0199] See Figures 1A to 1KIn one embodiment, the LED tube light may further include an emergency battery 6a for providing power in the event of an external power outage, thereby continuing to illuminate the LED tube light. The emergency battery 6a is disposed within the lamp holder 3a at one end of the lamp tube 1a. The emergency battery 6a may be partially or entirely located within the lamp holder 3a in the axial direction of the lamp holder 3a.

[0200] In one embodiment, the emergency battery 6a and the power supply 5a are respectively located in the lamp holders 3a at both ends of the lamp tube 1a. That is, the emergency battery 6a is installed in one lamp holder 3a, and the power supply 5a is installed in the other lamp holder 3a. This allows for a more reasonable arrangement of the emergency battery 6a and the power supply 5a, avoiding excessive length of the lamp holder 3a at one end, or the emergency battery 6a and the power supply 5a occupying too much space within the lamp tube 1a, resulting in an excessively long dark area within the lamp tube 1a or an excessively long non-light-emitting area for the entire LED tube light. In addition, it also avoids excessive concentration of heat sources, preventing the heat generated by the power supply 5a and the emergency battery 6a from affecting each other during operation.

[0201] like Figure 1C As shown, in one embodiment, the emergency battery 6a is disposed in one of the lamp holders 3a (at least 80% of the length of the emergency battery 6a is located in the lamp holder, which means the power supply 5a is considered to be located in the lamp holder 3a). In this embodiment, at least 80%, 85%, 90%, or 95% of the length of the emergency battery 6a is located in the lamp holder 3a. In one embodiment, at least 95% of the length of the emergency battery 6a is located in the lamp holder 3a. This prevents the emergency battery 6a from excessively occupying the space inside the lamp tube 1a, thereby affecting the light output of the lamp tube 1a. The internal volume of the lamp holder 3a is a, and the volume of the emergency battery 6a (the part located inside the lamp holder 3a) is c. The ratio of c to a is at least 30%, 35%, or 40% to fully utilize the internal space of the lamp holder 3a. While considering the heat dissipation of the emergency battery, the capacity of the emergency battery 6a is maximized to increase the battery life of emergency lighting.

[0202] In one embodiment, the emergency battery 6a is electrically connected to the lamp panel 2a. When the lamp panel 2a uses the aforementioned flexible circuit board or flexible substrate, the emergency battery 6a needs to be fixed to prevent it from shaking within the lamp tube 1a or lamp head 3a. In this embodiment, a fixing unit 7a may be further included to fix the emergency battery 6a. In other embodiments, when the lamp panel uses a rigid substrate (FR4 or aluminum substrate), the fixing unit 7a can also be used for fixing.

[0203] Specifically, the fixing unit 7a includes a third circuit board 71a, to which the emergency battery 6a is fixed (the main body of the emergency battery 6a is supported on the third circuit board 71a). The fixing unit 7a further includes a fixing part 72a for fixing the emergency battery 6a to the third circuit board 71a. In one embodiment, the fixing part 72a fixes the emergency battery 6a to the third circuit board 71a by adhesive (i.e., the fixing part 72a can be glue). In another embodiment, the fixing part 72a fixes the emergency battery 6a to the third circuit board 71a by snap-fit ​​(i.e., the fixing part 72a can be a snap-fit). In this embodiment, the fixing part 72a fixes the emergency battery 6a and the third circuit board 71a by binding. The fixing part 72a is wrapped around the emergency battery 6a and the third circuit board 71a to bind and fix them tightly. Specifically, the fixing part 72a is a heat-shrink film, which binds the emergency battery 6a and the third circuit board 71a by heat shrinking. In this embodiment, the lamp board 2a is electrically connected to the third circuit board 71a. When the lamp board 2a is a flexible circuit board or a flexible substrate, the lamp board 2a can be directly soldered to the third circuit board 71a. In this embodiment, the emergency battery 6a and the third circuit board 71a can be electrically connected via wires.

[0204] In one embodiment, a positioning unit 711a is provided on the third circuit board 71a. The emergency battery 6a cooperates with the positioning unit 711a to initially position the emergency battery 6a with the third circuit board 71a. Specifically, the positioning unit 711a includes a positioning hole 7111a, and at least a portion of the emergency battery 6a is accommodated within the positioning hole 7111a. In the thickness direction of the third circuit board 71a, at least a portion of the emergency battery 6a extends beyond the upper surface of the third circuit board 71a (the side where the emergency battery 6a is disposed is referred to as the upper surface) and enters the interior of the third circuit board 71a. Specifically, the emergency battery 6a is configured with a cylindrical body 61a, the axis of which is parallel or substantially parallel to the third circuit board 71a, and the axis of the body 61a extends along the length direction of the third circuit board 71a. At least a portion of the body 61a of the emergency battery 6a is located within the positioning hole 7111a, thereby reducing the overall height of the emergency battery 6a after it is installed on the third circuit board 71a, thus controlling the overall volume.

[0205] In one embodiment, when the third circuit board 71a and the emergency battery 6a are disposed as a whole within the lamp holder 3a, the two sides of the third circuit board 71a in the width direction can be inserted into the slots 301a within the lamp holder 3a to fix the third circuit board 71a. This prevents the third circuit board 71a and the emergency battery 6a from shaking relative to the lamp tube 1a or the lamp holder 3a when they are disposed as a whole. In this embodiment, the lamp holder 3a accommodating the emergency battery 6a can be the same as the lamp holder 3a accommodating the power supply 5a mentioned above, that is, the lamp holder 3a used at both ends of the lamp tube 2. In this case, the slots 301a can be the aforementioned first slot 31a or the second slot 32a.

[0206] See Figures 1A to 1I ,and Figures 1L to 1N In some embodiments, a fixing unit 8a with a different structure can be used to fix the emergency battery 6a. Specifically, the fixing unit 8a includes a support portion 81a, and the fixing unit 8a is fixed to the support portion 81a. Compared with supporting the emergency battery on a whole circuit board, its material cost is lower.

[0207] Furthermore, the support portion 81a includes a substrate 811a and a fastening portion 812a, the fastening portion 812a being fixed to the substrate 811a. The emergency battery 6a is directly fixed to the support portion 81a via the fastening portion 812a. In some embodiments, the emergency battery 6a is fixed to the support portion 81a by adhesive bonding. In some embodiments, the emergency battery 6a is fixed to the support portion 81a by binding.

[0208] In this embodiment, the fastening part 812a includes at least two sets of opposing elastic arms 8121a. When the emergency battery 6a is inserted into the fastening part 812a, the sidewall of the emergency battery 6a is clamped by the two sets of elastic arms 8121a. This makes assembly simpler and more convenient, and can improve assembly efficiency.

[0209] In this embodiment, a positioning unit 8111a is provided on the substrate 811a. The emergency battery 6a cooperates with the positioning unit 8111a to further fix the position of the emergency battery 6a and prevent or prevent the small emergency battery 6a from shaking relative to the substrate 811a. The positioning unit 8111a is a positioning hole, and at least a portion of the emergency battery 6a is accommodated in the positioning hole 8111a. In the thickness direction of the substrate 811a, at least a portion of the emergency battery 6a extends beyond the upper surface of the substrate 811a (the side where the emergency battery 6a is disposed is called the upper surface) and into the interior of the substrate 811a. Specifically, the emergency battery 6a is configured as a cylinder, with its axis parallel or substantially parallel to the substrate 811a, and the axis of the emergency battery 6a extends along the length direction of the substrate 811a. At least a portion of the emergency battery 6a is located in the positioning hole, which can reduce the overall height of the emergency battery 6a after it is installed on the substrate 811a, thereby controlling the overall volume.

[0210] In this embodiment, an abutment arm 813a is provided on the substrate 811a. When the emergency battery 6a is fixed to the support portion 81a, the abutment arm 813a can abut against the axial end of the emergency battery 6a to limit the emergency battery 6a from loosening relative to the substrate 811a in the length direction. Furthermore, only one set of abutment arms 813a is provided, which abut against one end of the emergency battery 6a, while the other end of the emergency battery 6a is limited by the inner wall of the positioning hole, thereby fixing the emergency battery 6a relative to the substrate 811a in the axial direction.

[0211] In this embodiment, when the support portion 81a and the emergency battery 6a are disposed as a whole within the lamp holder 3a, the two sides of the base plate 811a of the support portion 81a in the width direction can be inserted into the slots within the lamp holder 3a to fix the base plate 811a. This prevents the support portion 81a and the emergency battery 6a from shaking relative to the lamp tube 1a or the lamp holder 3a when they are disposed as a whole. In this embodiment, the lamp holder 3a accommodating the emergency battery 6a can be the same as the lamp holder 3a accommodating the power supply 5a mentioned above, i.e., the lamp holder 3a used at both ends of the lamp tube 2. In this case, the slots can also be the aforementioned first slot 31a or second slot 32a.

[0212] Furthermore, the fixing unit 8a may further include a fourth circuit board 82a, which is fixed to the support portion 81a. Specifically, a third slot 814a is provided on the support portion 81a, and the side wall of the fourth circuit board 82a is inserted into the third slot 814a to fix the fourth circuit board 82a. The emergency battery 6a is electrically connected to the fourth circuit board 82a (the two are electrically connected via wires). The lamp board 2a can be directly soldered to the fourth circuit board 82a or connected to the fourth circuit board 82a via wires.

[0213] In some embodiments, the fourth circuit board 82a may be omitted, and the emergency battery 6a may be directly connected to the lamp board 2a via wires. This can save some costs. However, when the lamp board 2a is a flexible circuit board or a flexible substrate, there may be a larger space for movement between the end of the lamp board 2a (the end of the lamp board is not fixed to the lamp tube 1a) and the wires.

[0214] See Figure 1C , Figures 10 to 1SIn one embodiment, the lamp panel 2a has a front side and an opposite back side. The front side of the lamp panel 2a is the side where the light source 202a is disposed. A first wire group 22a is disposed on the front side of the lamp panel 2a, which includes one or more wires, while a second wire group 23a is disposed on the back side of the lamp panel 2a, which includes one or more wires. By distributing the wires on both sides of the lamp panel 2a, the space on the lamp panel 2a can be utilized more efficiently, thereby reducing the width required for the lamp panel 2a to accommodate the wires and the light source 202a. By controlling the width of the lamp panel 2a, the warping of the lamp panel 2a when placed on the lamp tube 1a can be reduced, thus reducing the impact of the lamp panel 2a on the light output. In this embodiment, the width of the lamp panel 2a can be controlled within 12mm. Furthermore, the width of the lamp panel 2a can be controlled within 10mm ± 1mm. In this embodiment, the lamp tube 1a may have different diameters, but generally, the ratio of the width of the lamp plate 2a to the inner circumference of the lamp tube 1a needs to be controlled below 0.2, 0.18, 0.15, or 0.13 to prevent warping of the lamp plate 2a when it enters the lamp tube 1a and to reduce the influence of the lamp plate 2a on the light output. In this embodiment, the lamp plate 2a may be the aforementioned flexible lamp plate with the aforementioned free portion. That is, the lamp plate 2a can be applied in the aforementioned embodiments.

[0215] In this embodiment, the first wire group 22a and the second wire group 23a are electrically connected to the first circuit board 51a. Specifically, the first circuit board 51a has a first surface 512a and an opposite second surface 513a. The first surface 512a may be the surface facing the second circuit board 52a (in some embodiments, the second circuit board 52a may not be provided; in this case, the first surface 512a is the surface on which electronic components are disposed, such as capacitors, transformers, or resistors). A first power pad group 5121a is provided on the first surface 512a, which includes one or more sets of first power pads 51211a. A second power pad group 5131a is provided on the second surface 513a, which includes one or more sets of second power pads 51311a. The front side of the lamp board 2a is provided with a first light source pad group 24a, which includes one or more first light source pads 241a. The back side of the lamp board 2a is provided with a second light source pad group 25a, which includes one or more second light source pads 251a. The first power pad group 5121a is electrically connected to the first light source pad group 24a, and the second power pad group 5131a is electrically connected to the second light source pad group 25a.

[0216] In this embodiment, when the lamp board 2a is provided with 5 or more sets of wires, the width of the lamp board 2a can be controlled within 10mm ± 1mm.

[0217] The first power pad group 5121a and the first light source pad group 24a are directly fixed and electrically connected by solder 10a. The second power pad group 5131a and the second light source pad group 25a are also directly fixed and electrically connected by solder 10a. Specifically, the first power pad 51211a of the first power pad group 5121a corresponds to the first light source pad 241a of the first light source pad group 24a and is fixed by solder 10a; the second power pad 51311a of the second power pad group 5131a corresponds to the second light source pad 251a of the second light source pad group 25a and is fixed by solder 10a. In some embodiments, the first power pad group 5121a and the first light source pad group 24a can be connected by wires, and the second power pad group 5131a and the second light source pad group 25a can be connected by wires. In some embodiments, the first wire group 22a and the second wire group 23a can be connected by a male-female connector.

[0218] The number of first light source pads 241a in the first light source pad group 24a is equal to the number of wires in the first wire group 22a of the lamp board 2a. The first wire group 22a includes at least a positive wire and a negative wire connected to the light source 202a; that is, the first wire group 22a may include two sets of wires. In this case, the first light source pads 241a are configured in two groups to correspond to the two sets of wires. The light source 202a may include a first light source group 2021a and a second light source group 2022a, which use LED beads of different models, such as different color temperatures. In this case, the first wire group 22a includes two sets of positive wires and one set of negative wires, with the two sets of positive wires connected to the first light source group 2021a and the second light source group 2022a respectively. In other words, when the light source 202a includes the first light source group 2021a and the second light source group 2022a, the first wire group 22a includes at least three sets of wires, and the first light source pads 241a are configured in three groups. When the LED straight tube lamp's driver power supply is designed for dual-end power input (both lamp holder terminals are powered simultaneously), an additional conductor (N line, i.e., neutral line) needs to be added to the first conductor group 22a of the lamp board 2a. In this embodiment, the first light source pad 241a can be directly formed at the end of the conductor. In other embodiments, the first light source pad 241a can also be separately provided on the lamp board 2a, and the first light source pad 241a can be electrically connected to the conductor of the first conductor group 22a.

[0219] The number of second light source pads 251a in the second light source pad group 25a is equal to the number of wires in the second wire group 23a of the lamp board 2a. The second wire group 23a includes at least a positive wire and a negative wire connected to the emergency battery 6a (when the emergency battery 6a and the power supply 5a are respectively located on both sides of the lamp board 2a, a wire connecting the emergency battery 6a needs to be provided on the lamp board 2a). That is, the second wire group 23a can include two sets of wires. In this case, the second light source pads 251a are set in two groups to correspond to the two sets of wires. When the LED straight tube lamp is powered from both ends (both lamp heads are powered simultaneously), the second wire group 23a of the lamp board 2a needs to add one more wire (L-wire, i.e., live wire). In this embodiment, the second light source pads 251a can be directly formed at the end of the wires. In other embodiments, the second light source pads 251a can also be separately provided on the lamp board 2a and electrically connected to the wires of the second wire group 23a.

[0220] The first light source pad group 24a is located at the end of the lamp board 2a along its length, while the first power pad group 5121a is disposed on the first circuit board 51a and maintains a distance from the end of the first circuit board 51a along its length. In some embodiments, the distance L between the first power pad group 5121a and the end of the first circuit board 51a along its length is 4 mm to 15 mm. In some embodiments, the distance L between the first power pad group 5121a (the end of the first power pad group 5121a) and the end of the first circuit board 51a along its length is 5 mm to 10 mm. This maintains sufficient creepage distance.

[0221] A soldering notch 241a is provided on the first light source pad 241a of the first light source pad group 24a, and at least a portion of the solder 10a passes through the soldering notch 2411a and is fixed to the first power source pad 51211a of the first power source pad group 5121a. By providing the soldering notch 2411a, the bonding strength between the first light source pad 241a and the first power source pad 51211a can be increased.

[0222] The second light source pad group 25a is spaced from the end of the lamp board 2a along its length, while the second power pad group 5131a is disposed at the end of the first circuit board 51a. In some embodiments, the distance between the first power pad group 5121a and the end of the first circuit board 51a along its length is 4 mm to 15 mm. In some embodiments, the distance between the first power pad group 5121a (the end of the first power pad group 5121a) and the end of the first circuit board 51a along its length is 5 mm to 10 mm. This maintains sufficient creepage distance.

[0223] The reverse side of the lamp board 2a is attached to the first surface 512a of the first circuit board 51a, aligning the first light source pad group 24a with the first light source pad 5121. Solder 10a is disposed on the first light source pad group 24a and the first power pad group 5121a to achieve structural and circuit fixation. In this embodiment, the lamp board 2a may cover a portion of the first power pad 51211a of the first power pad group 5121a, and the portion of the first power pad 51211a not covered by the lamp board 2a is connected by solder 10a.

[0224] When the first light source pad group 24a is aligned with the first power supply pad group 5121a, the second light source pad group 25a on the reverse side of the lamp board 2a is aligned with the second power supply pad group 5131a on the second side 513a of the first circuit board 51a. At this time, the second light source pad group 25a and the second power supply pad group 5131a can be fixed by solder 10a.

[0225] The first circuit board 51a has multiple sets of grooves 514 at its end. The grooves 514 are configured one-to-one with the second power pads 51311a of the second power pad group 5131a. A conductive layer is provided in the groove 514 and is connected to the second power pads 51311a. At least a portion of the solder 10a enters the groove 514 and bonds with the conductive layer, thereby improving the bonding strength between the solder 10a and the second power pads 51311a.

[0226] like Figure 1T As shown, in some embodiments, the first light source pad group 24a and the first power supply pad group 5121a can be positioned and connected by a conductive pin 20a. Specifically, the conductive pin 20a passes through the lamp board 2a and the first circuit board 51a, and solder is applied at the conductive pin 20a to connect the lamp board 2a, the first circuit board 51a, and the conductive pin 20a into a single unit, thereby enabling the first light source pad group 24a and the first power supply pad group 5121a to conduct electricity. The conductive pin 20a can be disposed at the first light source pad group 24a and the first power supply pad group 5121a (directly passing through the first light source pad group 24a and the first power supply pad group 5121a). Here, the first light source pad group 24a may not be disposed at the end of the lamp board 2a, but can maintain a certain distance from the end of the lamp board 2a.

[0227] like Figure 1TAs shown, in some embodiments, the second light source pad group 25a and the second power supply pad group 5131a can be positioned and connected by a conductive pin 20a. Specifically, the conductive pin 20a passes through the lamp board 2a and the first circuit board 51a, and solder is applied at the conductive pin 20a to connect the lamp board 2a, the first circuit board 51a, and the conductive pin 20a into a single unit, thereby enabling the second light source pad group 25a and the first power supply pad group 5131a to conduct electricity. The conductive pin 20a can be disposed at the second light source pad group 25a and the second power supply pad group 5131a (directly passing through the second light source pad group 25a and the second power supply pad group 5131a). Here, the second power supply pad group 5131a may not be disposed at the end of the first circuit board 51a, and it may maintain a distance from the end of the first circuit board 51a.

[0228] like Figures 21A-21B As shown, in one embodiment, a flexible light panel is provided, including a top layer B1, a bottom layer B2, and an insulating layer B4 disposed in a stacked manner, that is, the top layer B1 and the bottom layer B2 may not be in contact. In other words, the flexible light panel includes a top layer B1 and a bottom layer B2 disposed vertically. Specifically, the flexible light panel can be an FPC circuit board.

[0229] The bottom layer B2 includes one or more second conductive layers B21, that is, the bottom layer B2 includes at least one second conductive layer B21. The second conductive layer B21 extends along the length direction of the flexible lamp panel. When the bottom layer B2 includes multiple second conductive layers B21, the multiple second conductive layers B21 are spaced apart along the width direction of the flexible lamp panel. The second conductive layer B21 can be used to connect a power module (see reference). Figure 1D (See section 5A). The second conductive layer B21 can be completely contained within the bottom layer B2 without being exposed therein, thus making it difficult for the second conductive layer B21 to come into contact with the structure of other layers and thus avoid unnecessary electrical connections. Alternatively, the second conductive layer B21 can be partially contained within the bottom layer B2, and at least partially exposed therein, thus allowing the second conductive layer B21 to come into contact with the structure of other layers and thus make electrical connections. For example, the bottom layer B2 has two second conductive layers B21, one for connecting to the positive terminal of the power supply and the other for connecting to the negative terminal of the power supply, so that the bottom layer B2 forms a power supply layer to supply power to the flexible lamp board. The second conductive layer B21 can be a long strip-shaped thin sheet structure made of conductive material, such as a copper foil strip. The second conductive layer B21 can come into contact with the insulating layer 4, and through the insulating effect of the insulating layer 4, the second conductive layer B21 does not come into contact with the top layer B1.

[0230] The top layer B1 includes a conductive layer B12 and a first conductive layer B11. The first conductive layer B11 and / or the conductive layer B12 can be a strip-shaped thin sheet structure made of conductive material, such as copper foil strips. Multiple first conductive layers B11 can be provided, each extending along the length of the flexible light panel. These multiple first conductive layers B11 are spaced apart along the width of the flexible light panel. Furthermore, the multiple first conductive layers B11 and multiple second conductive layers B21 are staggered along the width of the flexible light panel. That is, the projection of the first conductive layer B11 along the thickness direction of the flexible light panel onto the bottom layer B2 is located between two adjacent second conductive layers B21, or on the side of the edge second conductive layer B21 facing away from its adjacent second conductive layer B21, so that the first conductive layer B11 of the top layer B1 and the second conductive layer B21 of the bottom layer B2 form a stable staggered structure. The connecting layer B12 and the first conductive layer B11 are contactable at both ends along the length of the flexible lamp panel, thus achieving electrical connection. At the middle of the flexible lamp panel along its length, i.e. Figure 21A In the cross-sectional area shown, the conductive layer B12 and the first conductive layer B11 may not be in contact, thereby avoiding unnecessary electrical connections.

[0231] Existing flexible light panels employ a copper foil structure that essentially covers the top layer B1 and the bottom layer B2. However, when the entire copper foil structure is covered, under conditions of concentrated or uneven load distribution, such as when the flexible light panel is bent, the local load at the bend is relatively large. In this case, the entire copper foil structure can lead to stress concentration at the bend, potentially causing the copper foil to break. This embodiment addresses this by alternating the first conductive layer B11 and the second conductive layer B21. Each first conductive layer B11 and each second conductive layer B21 bears a portion of the load, distributing the stress at the bend of the flexible light panel across multiple first conductive layers B11 and multiple second conductive layers B21. This avoids localized stress concentration, improves the overall strength and bending resistance of the flexible light panel, and reduces the risk of breakage of the first conductive layer B11 and the second conductive layer B21 at the bend of the flexible light panel.

[0232] Further reference Figure 21BIn some specific embodiments, the connecting layer B12 and the first conductive layer B11 of the top layer B1 can be staggered with the second conductive layer B21 of the bottom layer B2. That is, the projection area B120 of the second conductive layer B21 on the top layer B1 along the thickness direction of the flexible lamp panel is located between the connecting layer B12 and the first conductive layer B11 adjacent to the connecting layer B12, or between two adjacent first conductive layers B11, or between the connecting layer B12 and the first conductive layer B11 opposite to the first conductive layer B11 when the connecting layer B12 is located on the same side of the multiple first conductive layers B11. On one side of 11, or on the side of the edge side of the first conductive layer B11 away from the adjacent first conductive layer B11; the projection area B120 of the second conductive layer B21 on the top layer B1 along the thickness direction of the flexible lamp panel, when the connecting layer B12 is located between the two first conductive layers B11, is located between the two adjacent first conductive layers B11, or between the connecting layer B12 and the first conductive layer B11 adjacent to this connecting layer B12, or on the side of the edge side of the first conductive layer B11 away from the adjacent first conductive layer B11.

[0233] In some specific embodiments, the width D3 of the first conductive layer B11, the width D2 of the second conductive layer B21, and the width D1 of the connecting layer B12 are all less than 1 / 3 of the overall width D4 of the flexible substrate. Furthermore, the projection of the second conductive layer B21 on the top layer B1 along the thickness direction of the flexible lamp board can partially overlap with the first conductive layer B11 or the connecting layer B12, or be spaced apart from the first conductive layer B11 or the connecting layer B12.

[0234] For example, in this embodiment, the connecting layer B12 is disposed on the same side of the plurality of first conductive layers B11. There are two first conductive layers B11 and two second conductive layers B21. One second conductive layer B21 forms a projection area B120 on the top layer B1 along the thickness direction of the flexible lamp panel, which is located between the connecting layer B12 and the first conductive layer B11, and the projection area B120 formed by the second conductive layer B21 is spaced apart from the connecting layer B12 and the first conductive layer B11. The other second conductive layer B21 forms a projection area B120 on the top layer B1 along the thickness direction of the flexible lamp panel, which is located between the two first conductive layers B11, and the other second conductive layer B21 is spaced apart from the two first conductive layers B11.

[0235] The first conductive layer B11 can be connected to the electrically connected LED bead B3 to carry the LED bead B3. Each LED bead B3 electrically connected to the first conductive layer B11 can be the same or different. For example, at least a portion of the plurality of first conductive layers B11 is used to connect the first LED bead B31, and at least a portion of the plurality of first conductive layers B11 is used to connect the second LED bead B32. The color temperature of the first LED bead B31 can be higher than the color temperature of the second LED bead B32. Furthermore, the shape or emission color of the first LED bead B31 can be the same as or different from that of the second LED bead B32. For example, when lit, the first LED bead B31 can emit high color temperature light, and the second LED bead B32 can emit low color temperature light; that is, the color temperature of the first LED bead B31 is greater than the color temperature of the second LED bead B32. Conversely, when lit, the first LED bead B31 can emit low color temperature light, and the second LED bead B32 can emit high color temperature light; that is, the color temperature of the first LED bead B31 is less than the color temperature of the second LED bead B32. Specifically, LED bead B3 can be an LED bead.

[0236] In this embodiment, the top layer B1 may specifically include two first conductive layers B11. One first conductive layer B11 is used to connect the first LED chip B31, and the other first conductive layer B11 is used to connect the second LED chip B32. In other words, the first conductive layer B11 is connected to the first LED chip B31, and the other first conductive layer B11 is connected to the second LED chip B32. In the width direction of the flexible substrate, the first conductive layer B11 for connecting the first LED chip B31 is disposed between the two second conductive layers B21, and the first conductive layer B11 for connecting the first LED chip B31 may be disposed at the middle or approximately the middle position in the width direction of the flexible substrate. When the color temperature of the first LED bead B31 is greater than that of the second LED bead B32, the first conductive layer B11 for connecting the high color temperature LED bead B3 is disposed between the two second conductive layers B21, so that the high color temperature LED bead B3 can be located in the middle or approximately the middle position in the width direction of the flexible substrate. This allows the multiple LED beads B3 connected by the multiple first conductive layers B11 to form a more uniform light distribution. When the color temperature of the first LED bead B31 is less than that of the second LED bead B32, the first conductive layer B11 for connecting the high color temperature LED bead B3 is disposed on the same side of the two second conductive layers B21, so that the high color temperature LED bead B3 can be located on the outer side or approximately the middle-outer side in the width direction of the flexible substrate. This allows the light emission effect of the multiple first conductive layers B11 closer to the outer side to cope with the scenario that requires strong light emission from one side.

[0237] The connecting layer B12 is electrically connected to the first conductive layer B11 and the second conductive layer B21, respectively, so that the power supply connected to the second conductive layer B21 can supply power to the first conductive layer B11. Multiple first conductive layers B11 can be connected in parallel to the connecting layer B12, with each first conductive layer B11 and the connecting layer B12 forming a parallel circuit. The currents in the multiple parallel circuits can be the same or different. For example, each parallel circuit can be equipped with components such as resistors and switches. By setting resistors of different values ​​in different parallel circuits, different current values ​​can be achieved by adjusting the multiple parallel circuits. By connecting the connecting layer B12 to multiple first conductive layers B11, the currents among the multiple first conductive layers B11 can be adjusted independently. Furthermore, by connecting different components in the parallel circuits, more electrical connection options are provided, thus adapting to different application requirements.

[0238] An insulating layer B4 is disposed between the top layer B1 and the bottom layer B2 to insulate and separate the top layer B1 and the bottom layer B2. Specifically, the insulating layer B4 can insulate and separate the first conductive layer B11 and the connecting layer B12 located on the top layer B1 from the second conductive layer B21 located on the bottom layer B2. The second conductive layer B21 and the connecting layer B12 located on opposite sides of the insulating layer B4 can be electrically connected by means of embedded metal wires or the like.

[0239] To prevent electrical components or external objects on the flexible light panel from puncturing the first conductive layer B11, the second conductive layer B21, and the connecting layer B12, the flexible light panel can also be provided with a PI layer (Polyimide Film Layer) B5. The PI layer B5 is disposed at the end of the top layer B1 opposite to the bottom layer B2, covering the first conductive layer B11 and the connecting layer B12 located on the top layer B1, and / or disposed at the end of the bottom layer B2 opposite to the top layer B1, covering the second conductive layer B21 located on the bottom layer B2. Furthermore, the PI layer B5 has high tensile strength. By covering the flexible light panel with the PI layer B5, the tensile strength of the flexible light panel can be improved, thereby preventing excessive deformation of the flexible light panel under tensile force, which could lead to breakage of the first conductive layer B11, the second conductive layer B21, or the connecting layer B12.

[0240] The present invention also provides a lighting fixture, which includes the aforementioned flexible lamp panel, a power module connected to the flexible lamp panel, and a power storage module (also referred to as an emergency power supply, see reference). Figure 1M (6a)

[0241] The power module is electrically connected to the first conductive layer B11 and the second conductive layer B21 (not shown in the figure), but the first conductive layer B11 and the second conductive layer B21 are not directly electrically connected. The energy storage module is electrically connected to the first conductive layer B11 and the second conductive layer B21. Specifically, an external power source, such as AC mains power, provides electrical energy to the first conductive layer B11 through the power module, thereby energizing the first conductive layer B11 and illuminating the first LED bead B31 and / or the second LED bead B32 on the first conductive layer B11. External power sources, such as mains power, supply electrical energy to the second conductive layer B12 through the power module. This energy then flows through the electrical circuit of the second conductive layer B12 to supply power to the energy storage module, thereby charging the energy storage module. When there is no external power source (such as during a power outage), the external power source cannot supply power to the first conductive layer B11. In this case, the energy storage module can supply power to the first conductive layer B11 through the power module, thereby illuminating the first LED bead B31 and / or the second LED bead B32 on the first conductive layer B11. This ensures that the lighting fixtures remain operational even during a power outage.

[0242] The power supply is connected to the second conductive layer B21 (not shown). In some alternative embodiments, to ensure a stable power supply to the flexible light panel, the power supply may consist of a main power supply and a backup power supply. The main power supply powers the flexible light panel during normal use, while the backup power supply powers the flexible light panel when the main power supply is unavailable.

[0243] The main power supply can be a battery. The backup power supply can also be a battery. When the main power supply is providing power, the backup power supply is disconnected from the second conductive layer B21 via a switch or similar component. When the main power supply is unavailable, the backup power supply is connected to the second conductive layer B21 via a switch or similar component to supply power to the flexible lamp panel. In some embodiments, the main power supply is an external power source such as AC mains power. Furthermore, in some preferred embodiments, the backup power supply can also be a charging and discharging device. Both the backup power supply and the main power supply are electrically connected to the second conductive layer B21. When the main power supply is providing power, it simultaneously supplies power to both the second conductive layer B21 and the backup power supply, storing electrical energy at this time. When the main power supply is unavailable, the backup power supply releases electrical energy to supply power to the second conductive layer B21. The backup power supply can specifically be a capacitor.

[0244] See Figures 3A to 3L In one embodiment, a lighting system is provided, the lighting system including the LED straight tube light (such as...) of the foregoing embodiments. Figures 1A to 1U LED straight tube lights or roughly the same Figures 1A to 1U The LED straight tube light, lamp holder 200a and fixing structure 300a are included.

[0245] like Figure 1BAs shown, a PIN pin 305a is provided on the lamp holder 3a at one end of the LED straight tube light. The PIN pin 305a is used to connect to the lamp socket. Figure 3G As shown, a positioning part 39a is provided on the lamp holder 3a at the other end of the LED straight tube light. The positioning part 39a is used to connect with the fixing structure 300a. In other words, the LED straight tube light has a first lamp holder and a second lamp holder. The first lamp holder has a first connecting structure (i.e., PIN pin 305a), while the second lamp holder has a second connecting structure (i.e., positioning part 39a). The first connecting structure and the second connecting structure have different structures to meet different installation requirements.

[0246] The fixing structure 300a in this embodiment includes a first component 3001a and a second component 3002a. The first component 3001a is provided with an opening 30011a, and at least a portion of the lamp head 3a of the LED straight tube lamp is inserted into the opening 30011a along its axial direction.

[0247] A stop portion 30012a is provided within the opening 30011a of the first component 3001a, and the stop portion 30012a stops the end face of the lamp holder 3a. For example, when the LED straight lamp is engaged with the first component 3001a, the end face of the lamp holder 3a of the LED straight lamp abuts against the stop portion 30012a. A positioning portion 39a may be protruded from the end face of the lamp holder 3a. The stop portion 30012a has gaps on both sides along the axial direction of the lamp holder 3a, and a positioning through hole 30013a is provided on the stop portion 30012a. The positioning portion 39a passes through the positioning through hole 30013a for positioning.

[0248] In this embodiment, the positioning part 39a can be integrally formed on the lamp holder 3a. The positioning part 39a in this embodiment includes multiple sets of arms 391a, which are evenly arranged around the axis of the lamp holder 3a. The arms 391a are elastic due to their material properties. For example, they can be made of plastic to give them a certain degree of elasticity. The ends of the arms 391a are provided with guide parts 3911a and stop parts 3912a. The guide parts 3911a facilitate the insertion of the positioning part 39a into the positioning through hole 30013a, while the stop parts 3912a cooperate with the stop parts 30012a to prevent it from dislodging from the positioning through hole 30013a.

[0249] In this embodiment, the first component 3001a of the fixing structure 300a is provided with a third connecting structure (PIN pin 30014a). The structure of the third connecting structure is roughly the same as that of the first connecting structure. The third connecting structure (PIN pin 30014a) cooperates with the lamp holder 200a. That is, the fixing structure 300a and the LED tube lamp form a lamp system. One end of the lamp system is connected to the lamp holder through the PIN pin 305a on the lamp head 3a, and the other end is connected through the PIN pin 30014a on the fixing structure 300a. The lamp holder 200a can be a G11 lamp holder, G13 lamp holder, or G15 lamp holder, etc., in the prior art. In some embodiments, the PIN pin 30014a only serves to fix the lamp holder 200a (and does not serve to connect electrically). In some embodiments, the PIN pin serves both to fix the lamp holder 200a and to provide electrical connection. When the PIN pin 305a / 30014a and the lamp holder 200a are only fixed (i.e. the PIN pin does not serve as an electrical connection), the PIN pin 305a / 30014a can also be made of non-metallic materials, such as plastic or other non-conductive materials.

[0250] Specifically, the lamp holder 200a includes a main body 2001a and a rotor 2002a. The main body 2001a includes a housing 20011a, on which a groove 20012a is provided, the groove 20012a having a circular opening. The housing 20011a is also provided with an insertion port 20013a, which penetrates the housing 20011a radially outward from the groove 20012a and connects the lateral exterior of the housing 20011a with the groove 20012a.

[0251] The rotor 2002a is mounted on the housing 20011a and can rotate accordingly. The rotor 2002a has a receiving groove 20021a, into which the PIN pin 30014a engages. When the receiving groove 20021a aligns with the insertion port 20013a, the PIN pin 30014a can be disengaged from the insertion port 20013a. When the rotor 2002a is rotated so that the receiving groove 20021a does not align with the insertion port 20013a, the PIN pin 30014a can be fixed, preventing it from disengaging from the insertion port 20013a.

[0252] In this embodiment, the second component 3002a is fixed to the first component 3001a. Specifically, the second component 3002a includes a first wall 30021a and a second wall 30022a. When the second component 3002a is fitted over the first component 3001a, the first wall 30021a and the second wall 30022a cover both sides of the first component 3001a in the width direction. A first positioning unit 30023a is provided on the first wall 30021a and / or the second wall 30022a, and a second positioning unit 30015a is provided on the first component 3001a. The first positioning unit 30023a and the second positioning unit 30015a cooperate to achieve the fixation between the first component 3001a and the second component 3002a.

[0253] The first positioning unit 30023a includes a fastening hole 30024a, and the second positioning unit 30015a includes a fastening part 30016a that mates with the fastening hole 30024a. When the fastening part 30016a is engaged with the fastening hole 30024a, the two are fixed together.

[0254] The first component 3001a has protruding walls 30017a on both sides, with through holes on the protruding walls 30017a, and a fastening part 30016a is disposed on the inner wall of the through hole. That is, the first wall 30021a and the second wall 30022a of the second component 3002a are respectively inserted into the two sets of protruding walls 30017a of the first component 3001a for positioning, and the fastening hole 30024a engages with the fastening part 30016a.

[0255] The second component 3002a is also provided with a third wall 30025a, which cooperates with the lamp holder 200a and restricts the relative rotation between the first component 3001a and the lamp holder 200a. This is to prevent the first component 3001a from accidentally disengaging from the lamp holder 200a (after the rotor 2002a rotates a certain angle, the PIN pin 30014a will come out of the insertion port 20013a).

[0256] A stop plate 30026a is provided on the third wall 30025a. The stop plate 30026a cooperates with the lamp holder 200a and restricts the relative rotation between the two. That is, the third wall 30025a restricts the rotation between the second component 3002a and the lamp holder 200a through the stop plate 30026a. Since the first component 3001a and the second component 3002a are fixed, the rotation between the first component 3001a and the lamp holder 200a is ultimately restricted. In this embodiment, the stop plate 30026a is inserted into the insertion port 20013a to restrict the rotation of the stop plate 30026a through the insertion port 20013a. In some embodiments, two sets of stop plates 30026a can be provided (not shown in the figure), with the two sets of stop plates respectively provided on both sides of the lamp holder 200a to restrict the relative rotation between the two.

[0257] A fourth wall 30027a may also be provided on the second component 3002a, and the fourth wall 30027a is connected to the third wall 30025a. The fourth wall 30027a is provided on the back of the lamp holder 200a (the other side of the lamp holder 200a opposite to the side where the rotor 2002a is provided) to further improve the stability of the structure.

[0258] In this embodiment, the LED straight tube light has a positioning part 39a on one end of the lamp head 3a, and a PIN pin can be provided on the other end of the lamp head 3a. In use, the lamp head 3a with the PIN pin can be directly installed onto the matching lamp holder 200a, while the lamp head 3a with the positioning part 39a is fixed to the corresponding lamp holder 200a by the fixing structure 300a.

[0259] In this embodiment, the PIN pin on the lamp holder 3a can only serve a fixing function.

[0260] like Figures 4A to 4F As shown, a fixing structure 400a is provided, the basic structure of which is the same as the fixing structure 300a in the previous embodiment. The difference is the fixing between the first component 4001a and the second component 4002a of the fixing structure 400a.

[0261] Specifically, the fixing structure 400a includes a first component 4001a and a second component 4002a. The fixing structure or mating method of the first component 4001a with the lamp holder of the LED straight tube lamp is the same as in the aforementioned embodiment.

[0262] Similarly, the second component 4002a is fixed to the first component 4001a. Specifically, the second component 4002a is fixed to the first component 4001a via a connecting structure 500a. The connecting structure 500a includes a first connecting component 5001a and a second connecting component 5002a, with the first connecting component 5001a disposed on the first component 4001a and the second connecting component 5002a disposed on the second component 4002a. Through the cooperation of the first connecting component 5001a and the second connecting component 5002a, the first component 4001a and the second component 4002a can be fixed together.

[0263] The first connecting member 5001a can be a snap fastener (the structure of the snap fastener can be roughly the same as the structure of the positioning part 39a in the aforementioned embodiment), while the second connecting member 5002a is a snap hole. When the first connecting member 5001a passes through the second connecting member 5002a, the two are fixed together. Furthermore, the two cannot be separated without damaging the connecting structure 500a.

[0264] The second component 4002a includes a body 40023a, which can be attached to the surface of the first component 4001a. The second connecting component 5002a is disposed on the body 40023a.

[0265] The second component 4002a may also include a first wall 40021a and a second wall 40022a, which are respectively disposed on both sides of the main body 40023a. When the second component 4002a is fitted over the first component 4001a, the first wall 40021a and the second wall 40022a cover both sides of the first component 4001a in the width direction to improve the stability during the fit and to limit the relative rotation between the first component 4001a and the second component 4002a.

[0266] The first component 4001a may have protruding walls 40017a on both sides, with through holes 40018a formed on the protruding walls 40017a. The first wall 40021a and the second wall 40022a of the second component 4002a are respectively inserted into the through holes 40018a of the protruding walls 40017a on both sides of the first component 4001a. In this way, the relative movement between the first component 4001a and the second component 4002a can be further limited, thereby improving structural stability.

[0267] In this embodiment, the material hardness and / or elasticity of the second component 4002a are greater than those of the first component 4001a.

[0268] In addition, as in the aforementioned embodiments, the second component 4002a may also be provided with one or more of the third wall 40025a, the stop plate 40026a and the fourth wall 40027a, and their structure and function may be roughly the same as in the aforementioned embodiments, which will not be repeated here.

[0269] Figures 3A to 3L and Figures 4A to 4J As shown, in this embodiment, the LED straight tube light is installed between two sets of corresponding lamp holders. The distance between the end faces of the two sets of lamp heads 3a of the LED straight tube light is A. When the fixing structure 300a (or fixing structure 400a) is connected to the LED straight tube light, the distance from the end face of its first component 3001a (or first component 4001a) to the end face of the lamp head 3a (the end not connected to the fixing structure 300a) at the other end of the LED straight tube light is B.

[0270] When the distance between two groups of lamp holders is C, A and C satisfy the following relationship: 0.9C < A < 0.995C. And the values of C and B satisfy the following relationship: 0.95C ≤ B ≤ C. When A and C satisfy the above conditions, the LED straight tube lamp can have a larger length dimension for light emission. When B and C satisfy the above conditions, the installation requirements can be met, that is, when the first component 4001a is installed integrally with the LED straight tube lamp (forming a lamp system), the cooperation with the lamp holder.

[0271] When the distance between two groups of lamp holders is 300 millimeters, A and C satisfy the following relationship: 0.9C < A < 0.94C, and the values of C and B satisfy the following relationship: 0.95C ≤ B ≤ C.

[0272] When the distance between two groups of lamp holders is 600 millimeters, A and C satisfy the following relationship: 0.94C < A < 0.98C, and the values of C and B satisfy the following relationship: 0.98C ≤ B ≤ C.

[0273] When the distance between two groups of lamp holders is 900 millimeters, A and C satisfy the following relationship: 0.97C < A < 0.99C, and the values of C and B satisfy the following relationship: 0.99C ≤ B ≤ C.

[0274] When the distance between two groups of lamp holders is 1200 millimeters, A and C satisfy the following relationship: 0.98C < A < 0.995C, and the values of C and B satisfy the following relationship: 0.992C ≤ B ≤ C.

[0275] When the distance between two groups of lamp holders is 1500 millimeters, A and C satisfy the following relationship: 0.98C < A < 0.995C, and the values of C and B satisfy the following relationship: 0.995C ≤ B ≤ C.

[0276] In this embodiment, the lamp head 3a at one end of the LED straight tube lamp is connected to the lamp holder through PIN pins, and the lamp head 3a at the other end is connected to the lamp holder through the first component 4001a. In this embodiment, A and B satisfy the following relationship: 0.95A < B < 0.995A. That is, for the first component 4001a to complete the connection with the lamp head 3a and the lamp holder, it needs to occupy a length dimension of 0.005A to 0.05A. In one embodiment, the first component 4001a only occupies a dimension of less than 20 millimeters, 15 millimeters or 12 millimeters in the length direction of the lamp system (the first component 4001a and the LED straight tube lamp form a lamp system after installation). That is, the difference between the length of the lamp system (i.e., distance B) and the length of the LED straight tube lamp (i.e., distance A) is less than 20 millimeters, 15 millimeters or 12 millimeters, and the difference between the length of the lamp system (i.e., distance B) and the length of the LED straight tube lamp (i.e., distance A) needs to be greater than 5 millimeters or 8 millimeters. This difference can also be regarded as the length dimension occupied by the first component 4001a in the length direction of the LED straight tube lamp.

[0277] In this embodiment, one set of lamp holders 3a (a set of lamp holders with an internal power supply) has a wire hole so that the wire 304a (or power connection part) connected to the power supply can be led out from the wire hole of the lamp holder 3a. The wire 304a can be connected to an external power supply (such as mains power), or the wire 304a can be electrically connected to the lamp to supply power to the LED tube lamp. Figure 3B As shown, the wire hole is located on the side wall of the lamp holder 3a.

[0278] In some embodiments, the threaded hole 303a may be located in different positions. For example... Figures 4A to 4D and Figures 4G to 4I As shown, the wire hole 303a is located at the junction of the end wall and side wall of the lamp holder 3a (not connected to the fixing structure 400a). Specifically, in the axial direction of the lamp holder 3a, the wire hole 303a communicates with the interior of the lamp holder 3a (in the axial direction of the lamp holder 3a, the outline of the wire hole 303a can be projected into the interior space of the lamp holder 3a). In other words, when looking directly at the end face of the lamp holder 3a in the axial direction, the interior of the lamp holder 3a can be seen through the wire hole 303a. Therefore, when the wire 304a exits through the wire hole 303a, the wire 304a can directly exit through the wire hole 303a along the length of the lamp holder 3a, without needing to bend the wire 304a and exit through the side wall of the lamp holder 3a, reducing the difficulty of the wire threading process. In the radial direction of the lamp holder 3a, the wire hole 303a communicates with the interior of the lamp holder 3a (the outline of the wire hole 303a can be projected into the interior space of the lamp holder 3a in the radial direction). In other words, when looking at the side of the lamp holder 3a in the radial direction, the interior of the lamp holder 3a can be seen through the wire hole 303a. Therefore, when the wire 304a passes through the wire hole 303a, the wire 304a can be bent and led out radially from the lamp holder 3a to prevent the wire 304a from occupying the space outside the end wall of the lamp holder 3a and affecting the fit between the end wall of the lamp holder 3a and the corresponding lamp socket.

[0279] In the above embodiments, after the wire 304a passes through the wire hole 303a, a certain gap may be left in the wire hole 303a to allow for convection heat dissipation, thereby improving the heat dissipation performance inside the lamp holder 3a. For example, after the wire 304a passes through the wire hole 303a, the area of ​​the wire hole 303a that can be used for convection heat dissipation (the area not occupied by the wire 304a) accounts for at least 1%, 2%, 3%, 4%, or 5% of the total area of ​​the wire hole 303a. In addition, to prevent the wire 304a from becoming loose, the area of ​​the wire hole 303a that can be used for convection heat dissipation (the area not occupied by the wire 304a) does not exceed 20% of the total area of ​​the wire hole 303a.

[0280] like Figures 5A to 8As shown, a fixing structure 600a is provided, whose basic structure is the same as the fixing structure 300a (or fixing structure 400a) in the aforementioned embodiments, and can be applied to the LED straight tube lamp of the present invention. The difference between the fixing structure and the fixing structure in the aforementioned embodiments lies in the specific structure therein.

[0281] The fixed structure 600a includes a first component 6001a and a second component 6002a. The first component 6001a and the second component 6002a can be either separate structures or integrated structures. In this embodiment, the first component 6001a and the second component 6002a are constructed as separate structures.

[0282] A PIN pin 305a is provided on the lamp holder 3a at one end of the LED straight tube light for connecting to a lamp socket. A positioning part 39a is provided on the lamp holder 3a at the other end of the LED straight tube light for connecting to a fixing structure 600a. In other words, the LED straight tube light has a first lamp holder and a second lamp holder. The first lamp holder has a first connecting structure (i.e., the PIN pin 305a), while the second lamp holder has a second connecting structure (i.e., the positioning part 39a). The first and second connecting structures have different structures to meet different installation requirements. In other embodiments, the fixing structure 600a and the lamp holder 3a can be an integral structure.

[0283] In this embodiment, an opening 60011a is provided on the first component 6001a, and at least a portion of the lamp head 3a of the LED straight tube lamp is inserted into the opening 60011a along its axial direction.

[0284] A stop 60012a is provided within the opening 60011a of the first component 6001a, and the stop 60012a stops the end face of the lamp holder 3a. For example, when the LED straight lamp is engaged with the first component 6001a, the end face of the lamp holder 3a of the LED straight lamp rests against the stop 60012a. A positioning part 39a can be provided on the end face of the lamp holder 6a. The stop 60012a has gaps on both sides along the axial direction of the lamp holder 3a, and a positioning through hole 60013a is provided on the stop 60012a. The positioning part 39a passes through the positioning through hole 60013a for positioning. At this time, the positioning part 39a cannot be pulled out from the positioning through hole 60013a (without damaging the structure), thus completing the fixation of the fixing structure 600a and the lamp holder 3a. In this embodiment, the end face of the lamp holder 3a, which mates with the fixing structure 600a, is provided with a heat dissipation hole 302. The heat dissipation hole 302 is not blocked by the stop portion 60012a or is only partially blocked by the stop portion 60012a. Therefore, the heat dissipation hole 302 can communicate with the space between the stop portion 60012a and the end wall of the first component 6001a to facilitate heat dissipation. In this embodiment, the space between the stop portion 60012a and the end wall of the first component 6001a can dissipate heat through the through hole on the PIN pin 60014a and / or the hole on the end wall of the first component 6001a.

[0285] In this embodiment, the positioning part 39a can be integrally formed on the lamp holder 3a. The positioning part 39a in this embodiment includes multiple sets of arms 391a, which are evenly arranged around the axis of the lamp holder 3a. The arms 391a are elastic due to their material properties. For example, they can be made of plastic to give them a certain degree of elasticity. The ends of the arms 391a are provided with guide parts 3911a and anti-reverse parts 3912a. The guide parts 3911a facilitate the insertion of the positioning part 39a into the positioning through hole 60013a, while the anti-reverse parts 3912a cooperate with the stop parts 30012a to prevent it from dislodging from the positioning through hole 30013a. In this embodiment, there are two sets of arms 391a, with a gap between them to allow for deformation and facilitate connection.

[0286] In this embodiment, the positioning through hole 60013a is an oblong hole, and the outer contour of the positioning part 39a matches the shape of the positioning through hole 60013a. Therefore, after the positioning part 39a is inserted into the positioning through hole 60013a, the relative rotation between the lamp head 3 and the first component 6001a can be restricted. In other embodiments, the positioning through hole 60013a can be a non-circular shape, thereby preventing the rotation between the first component 6001a and the lamp head 3 after insertion.

[0287] In this embodiment, the first component 6001a and the lamp holder 3a are positioned by a positioning unit so that when the first component 6001a and the lamp holder 3a are engaged, they can be aligned by the positioning unit.

[0288] The positioning unit includes a first positioning unit 701a and a second positioning unit 702a that cooperate with each other. The first positioning unit 701a is disposed on the first component 6001a, while the second positioning unit 702a is disposed on the lamp holder 3a. The first positioning unit 701a is a positioning protrusion that protrudes from the inner wall of the first component 6001a, while the second positioning unit 701a is a positioning groove disposed on the lamp holder 3a. When the positioning protrusion and the positioning groove are aligned, the lamp holder 3a can be inserted into the first component 6001a; conversely, the lamp holder 3a cannot be inserted into the first component 6001a if they are not aligned. In this embodiment, when the positioning protrusion and the positioning groove are aligned, the positioning part 39a and the positioning through hole 60013a are also aligned.

[0289] In this embodiment, the first component 6001a of the fixing structure 600a is provided with a third connecting structure (PIN pin 60014a). The structure of the third connecting structure is roughly the same as the first connecting structure (PIN pin on the lamp holder 3). The third connecting structure (PIN pin 60014a) cooperates with the lamp holder. That is, the fixing structure 600a and the LED tube lamp form a lamp system. One end of the lamp system is connected to the lamp holder through the PIN pin 305a on the lamp holder 3a, and the other end is connected to the lamp holder at the other end through the PIN pin on the fixing structure 600a. The lamp holder can be a G11 lamp holder, G13 lamp holder, or G15 lamp holder, etc., as in the prior art. In some embodiments, the PIN pin only serves to fix the lamp holder (does not serve an electrical connection). In some embodiments, the PIN pin serves both to fix the lamp holder and to provide an electrical connection. When the PIN pin and the lamp holder are only fixed (i.e., the PIN pin does not serve an electrical connection), the PIN pin can also be made of non-metallic material, such as plastic, or other non-conductive materials.

[0290] See Figure 3C , Figure 3D and Figure 3H The specific structure of the lamp holder is the same as described in the previous embodiment, that is, the lamp holder 200a includes a main body 2001a and a rotor 2002a. The main body 2001a includes a housing 20011a, on which a groove 20012a is provided, the groove 20012a having a circular opening. The housing 20011a is also provided with an insertion port 20013a, which penetrates the housing 20011a radially outward in the groove 20012a and connects the lateral exterior of the housing 20011a with the groove 20012a.

[0291] The rotor 2002a is mounted on the housing 20011a and can rotate accordingly. The rotor 2002a has a receiving groove 20021a, into which the PIN pin 30014a engages. When the receiving groove 20021a aligns with the insertion port 20013a, the PIN pin can be disengaged from the insertion port 20013a. When the rotor 2002a is rotated so that the receiving groove 20021a does not align with the insertion port 20013a, the PIN pin is secured, preventing it from disengaging from the insertion port 20013a.

[0292] In this embodiment, the second component 6002a is fixed to the first component 6001a. Specifically, the second component 6002a is fixed to the first component 6001a via a fixing structure 800a. The fixing structure 800a includes a first fixing structure 8001a and a second fixing structure 8002a. After the first fixing structure 8001a and the second fixing structure 8002a cooperate, the second component 6002a and the first component 6001a can be connected. The first fixing structure 8001a is disposed on the second component 6002a, and the second fixing structure 8002a is disposed on the first component 6001a.

[0293] The first fixing structure 8001a includes a snap fastener 8011a, while the second fixing structure 8002a includes a fastening hole. Specifically, the snap fastener 8011a includes a first hook 80111a and a second hook 80112a, which have roughly the same structure and are symmetrically arranged. The fastening hole includes a first fastening hole 80021a and a second fastening hole 80022a. The first hook 80111a engages with the first fastening hole 80021a, and the second snap fastener 80012a engages with the second fastening hole 80022a. The first fastening hole 80021a can be located on the end face of the first member 6001a, while the second fastening hole 80022a can be located on the stop portion 60012a.

[0294] In this embodiment, the main body 60021a of the second component 6002a is strip-shaped. A positioning groove 60015a is provided on the first component 6001a, extending along the axial direction of the first component 6001a and disposed on its outer surface. At least a portion of the main body 60021a of the second component 6002a is accommodated within the positioning groove 60015a. Therefore, when the second component 6002a engages with the first component 6001a, the positioning groove 60015a restricts the rotation of the second component 6002a relative to the first component 6001a, improving structural stability.

[0295] In some embodiments, at least 70%, 75%, 80%, or 85% of the thickness of the main body 60021a is accommodated within the positioning groove 60015a to reduce the space occupied by the second member 6002a in the radial direction of the lamp tube. In some embodiments, the entire thickness of the main body 60021a is accommodated within the positioning groove 60015a so that the second member 6002a does not occupy additional space in the radial direction of the lamp tube.

[0296] A hole 60016a is provided on the first component 6001a. The hole 60016a can be located in the positioning groove 60015a. The main body 60021a of the second component 6002a covers a portion of the hole 60016a. That is, a portion of the hole 60016a is exposed to the outside of the main body 60021a. When disassembly is required, a tool can be inserted into the hole 60016a to pry open the second component 6002a (destroying the fixing structure so that the first component 6001a and the second component 6002a can be separated).

[0297] In this embodiment, a stop plate 60026a is provided on the second component 6002a. The stop plate 60026a cooperates with the lamp holder 200a and restricts the relative rotation between the second component 6002a and the lamp holder 200a. That is, the second component 6002a restricts the rotation between the second component 6002a and the lamp holder 200a through the stop plate 60026a. Since the first component 6001a and the second component 6002a are fixed, the rotation between the first component 601a and the lamp holder 200a is ultimately restricted, so that the LED tube lamp cannot be removed from the lamp holder 200a without damage. In this embodiment, the stop plate 60026a includes two sets of walls, which are respectively protruding from the main body 60021a of the second component 6002a, and the other ends of the two sets of walls are connected to each other, thereby increasing the structural strength of the stop plate 60026a.

[0298] During installation, the first component 6001a is connected to the lamp holder 3a of the LED straight tube light. Then, the PIN pins of the lamp holder 3a and the first component 6001a are respectively engaged with the two lamp holders arranged opposite each other. Finally, the second component 6002a is fixed to the first component 6001a, and the stop plate 60026a of the second component 6002a is inserted into the insertion port 20013a of the lamp holder 200 to restrict the rotation of the first component 6001a relative to the lamp holder 200 and prevent the PIN pins of the first component 6001a from coming out of the lamp holder 200.

[0299] In one embodiment, the wall thickness of the first component 6001a is non-uniform in the circumferential direction. The first component 6001a has a planar surface and an arc surface in the circumferential direction. The wall thickness at the arc surface and the wall thickness at the planar surface are adjusted to give the joint greater strength, thereby improving the structural strength of the first component 6001a.

[0300] In this embodiment, the LED straight tube light has a positioning part 39a on one end of the lamp head 3a, and a PIN pin can be provided on the other end of the lamp head 3a. In use, the lamp head 3a with the PIN pin can be directly installed onto the matching lamp holder 200a, while the lamp head 3a with the positioning part 39a is fixed to the corresponding lamp holder 200a by the fixing structure 300a.

[0301] See Figures 2A to 2E In one embodiment, an LED lamp, particularly an integrated emergency LED lamp, is provided, comprising a lamp tube 10a, a circuit board 20a, a light source 30a, and a power supply 50a. The lamp tube 10a can be the same as the lamp tube in the aforementioned embodiments, or it can have a different structure or shape. The circuit board 20a is disposed inside the lamp tube 10a, and the light source 30a is disposed on the circuit board 20a and electrically connected to the circuit board 20a. The LED lamp in this embodiment can be an emergency LED lamp, which has an emergency battery to provide power to the LED lamp itself when the external power supply is cut off, thereby continuing to illuminate the LED lamp. The light source 30a in this embodiment can be an LED chip from the prior art.

[0302] See Figure 2B In this embodiment, the power supply 50a includes electronic component 501a and battery 502a. Battery 502a can provide power when the external power supply is cut off, thereby continuing to illuminate the LED light. Both electronic component 501a and battery 502a are mounted on circuit board 20a. By mounting electronic component 501a, battery 502a, and light source 30a on the same circuit board, the structure is simplified, and production and assembly are more convenient.

[0303] See Figures 2B to 2EIn this embodiment, electronic component 501a and battery 502a can be disposed at the same end along the length of circuit board 20a. In other embodiments, electronic component 501a and battery 502a are located at different ends along the length of circuit board 20a. Electronic component 501a includes a heat-generating element 5011a (such as a transformer, resistor, or IC) and a corresponding non-heat-generating element 5012a (including elements that do not generate heat or generate relatively little heat during operation, such as capacitors). In this embodiment, when electronic component 501a is arranged, non-heat-generating element 5012a can be disposed between heat-generating element 5011a (such as a transformer, resistor, or IC) and battery 502a. On the one hand, this maintains a certain distance between heat-generating element 5011a and battery 502a, increasing the distance for heat conduction, radiation, and convection. On the other hand, it blocks mutual heat radiation between heat-generating element 5011a and battery 502a, reducing the mutual thermal influence between them. In addition, when the non-heating element 5012a is a capacitor, it has good heat resistance.

[0304] In this embodiment, a non-heating element 5012a (including elements that do not generate heat or generate relatively little heat during operation, such as a capacitor) is provided between the battery 502a and the light source 30a (along the length direction of the circuit board 20a). This serves two purposes: firstly, it maintains a certain distance between the light source 30a and the battery 502a, increasing the distance for heat conduction, radiation, and convection; secondly, it blocks mutual heat radiation between the light source 30a and the battery 502a, reducing the mutual thermal impact between them. Multiple non-heating elements 5012a can be provided, and they can be located at different positions along the width direction of the circuit board 20a to increase the area blocking heat radiation.

[0305] In this embodiment, the circuit board 20a has an upper surface on which the light source 30a is disposed, and the battery 502a is disposed on the upper surface of the circuit board 20a. In the thickness direction of the circuit board 20a, at least a portion of the battery 502a extends beyond the upper surface of the circuit board 20a and enters the interior of the circuit board 20a. Specifically, the battery 502a is configured with a cylindrical body 5021a, the axis of which is parallel or substantially parallel to the circuit board 20a, and the axis of the body 5021a extends along the length direction of the circuit board 20a. A positioning hole 201a is provided on the circuit board 20a, and at least a portion of the body 5021a of the battery 502a is located within the positioning hole 201a. This reduces the overall height of the battery 502a after it is mounted on the circuit board 20a, thereby controlling the overall volume. Furthermore, the positioning hole 201a limits the wobbling of the battery 502a relative to the circuit board 20a, reducing the risk of the battery 502a's pins detaching from the circuit board 20a.

[0306] The width of the positioning hole 201 is 40% to 70% of the width of the circuit board 20a. This ensures that the battery 502a has enough space to sink at the positioning hole 201a, and also leaves enough space on the circuit board 20a to arrange circuit traces.

[0307] In some embodiments, the light source 30a is arranged in one or more columns on the circuit board 20a. Specifically, in this embodiment, the light source 30a is arranged in two columns.

[0308] The circuit board 20a has a first region 203a and a second region 204a along its length. The first region 203a is used to house the light source 30a, and the second region 204a is used to house the power supply 50a. In some embodiments, the components on the first region 203a include only the light source 30a, excluding other electronic components. In some embodiments, the components on the second region 204a include only the electronic components 501a of the power supply 50a and the battery 502a, excluding the light source 30a. This allows for more rational thermal management and wiring design. In some embodiments, electronic components 501a are disposed on both the upper and lower surfaces of the circuit board 20a in the second region 203a, making the arrangement of electronic components 501a more compact per unit length in the second region 204a.

[0309] The length of the first region 203a is configured to account for 50%, 55%, 60%, 65% or 70% or more of the length of the circuit board 20a, so that it has a large overall light-emitting length.

[0310] See Figures 2A to 2E The lamp tube 10a includes a base 101a, and a circuit board 20a is fixed to the base 101a. In some embodiments, the circuit board 20a is glued to the base 101a. In some embodiments, the circuit board 20a is snap-fitted to the base 101a. In some embodiments, the circuit board 20a is fixed to the base 101a by bolts. In this embodiment, the base 101a is provided with slots 1011a, and the two sides of the circuit board 20a in the width direction are inserted into the slots 1011a for fixation. This design is simple and has high assembly efficiency.

[0311] In this embodiment, the bottom of the circuit board 20a and the base 101a are spaced apart to form an accommodating space. An electronic component 501a is disposed on the lower surface of the circuit board 20a, and the electronic component 501a on the lower surface of the circuit board 20a is located within the accommodating space. Additionally, the electronic component 501a located on the upper surface of the circuit board 20a may include pins, which may also be accommodated within the accommodating space.

[0312] The lamp tube 10a may further include a cover 102a, which is fixed to the base 101a and covers the circuit board 20a. In one embodiment, the cover 102a may be made entirely of a light-transmitting material. In one embodiment, the cover 102a includes a main body 1021a and a light-transmitting part 1022a. The main body 1021a is configured to connect to the base 101a and is used to cover the non-light-emitting areas on the circuit board 20a (the areas on the circuit board 20a where electronic components 501a are disposed and the areas where batteries 502a are disposed). The light-transmitting part 1022a covers the light-emitting areas on the circuit board 20a (the areas on the circuit board 20a where light sources 30a are disposed) so that the light generated when the light source 30a is lit can pass through the light-transmitting part 1022a. In this embodiment, the light-transmitting part 1022a may be configured to have a diffusion function. In some embodiments, a diffusion coating is coated on the surface of the light-transmitting part 1022a to give it a diffusion function. In some embodiments, the light-transmitting portion 1022a has a diffusion function due to its own material properties (e.g., using acrylic material). In this embodiment, the light-transmitting portion 1022a is mounted on the cover 102a.

[0313] In this embodiment, the cover 102a has a first part and a second part, wherein the height of the first part is greater than that of the second part, so that there is a larger accommodating space between the first part and the base 101a for accommodating one end of the circuit board 20a having electronic components 501a and battery 502a, while the second part corresponds to the part of the circuit board 20a having a light source 30a.

[0314] In some embodiments, the power supply may also be referred to as a power module.

[0315] Next, please see Figure 9A , Figure 9AThis is a circuit block diagram of the power supply module according to the first embodiment of this application. The power supply module 5 of the LED lamp in this embodiment is coupled to the LED module 50 and includes a rectifier circuit 510 (which may be referred to as the first rectifier circuit 510), a filter circuit 520, and a driver circuit 530. The rectifier circuit 510 is coupled to a first pin 501 and a second pin 502 to receive external driving signals, rectify the external driving signals, and then output the rectified signal from the first rectified output terminal 511 and the second rectified output terminal 512. The filter circuit 520 is coupled to the rectifier circuit 510 to filter the rectified signal; that is, the filter circuit 520 is coupled to the first rectified output terminal 511 and the second rectified output terminal 512 to receive the rectified signal, filter the rectified signal, and then output the filtered signal from the first filtered output terminal 521 and the second filtered output terminal 522. The driving circuit 530 is coupled to the filter circuit 520 and the LED module 50 to receive the filtered signal and generate a driving signal to drive the LED module 50 to emit light. The driving circuit 530 can be, for example, a DC-DC converter circuit to convert the received filtered signal into a driving signal, which is then output through the first driving output terminal 531 and the second driving output terminal 532. That is, the driving circuit 530 is coupled to the first filter output terminal 521 and the second filter output terminal 522 to receive the filtered signal and then drive the LED component (not shown) within the LED module 50 to emit light. Please refer to the following description of the embodiments for details. The LED module 50 is coupled to the first driving output terminal 531 and the second driving output terminal 532 to receive the driving signal and emit light. Preferably, the current of the LED module 50 is stabilized at a set current value. Specific configurations of the LED module 50 will be described later. Figures 10A to 10I Explanation.

[0316] Please see Figure 9B , Figure 9BThis is a circuit block diagram of the power supply module according to the second embodiment of this application. The power supply module 5 of the LED lamp in this embodiment is coupled to the LED module 50 and includes a rectifier circuit 510, a filter circuit 520, a driver circuit 530, and a rectifier circuit 540 (which may be referred to as the second rectifier circuit 540). The rectifier circuit 510 is coupled to the first pin 501 and the second pin 502 to receive and rectify the external drive signals transmitted by the first pin 501 and the second pin 502; the second rectifier circuit 540 is coupled to the third pin 503 and the fourth pin 504 to receive and rectify the external drive signals transmitted by the third pin 503 and the fourth pin 504. That is, the power supply module 5 of the LED lamp may include the first rectifier circuit 510 and the second rectifier circuit 540, which together output the rectified signal at the first rectified output terminal 511 and the second rectified output terminal 512. The filter circuit 520 is coupled to the first rectified output terminal 511 and the second rectified output terminal 512 to receive the rectified signal and filter it. The filtered signal is then output from the first filter output terminal 521 and the second filter output terminal 522. The drive circuit 530 is coupled to the first filter output terminal 521 and the second filter output terminal 522 to receive the filtered signal and then drive the LED component (not shown) in the LED module 50 to emit light.

[0317] Please see Figure 9C , Figure 9C This is a circuit block diagram of the power supply module according to the third embodiment of this application. The power supply module for the LED lamp mainly includes a rectifier circuit 510, a filter circuit 520, and a driver circuit 530. This embodiment is similar to the one described above. Figure 9B The difference in this embodiment is that the rectifier circuit 510 can have three input terminals to be coupled to the first pin 501, the second pin 502, and the third pin 503 respectively, and can rectify the signals received from each pin 501 to 503. The fourth pin 504 can be floating or shorted to the third pin 503; therefore, the configuration of the second rectifier circuit 540 can be omitted in this embodiment. The operation of the remaining circuits is the same as... Figure 9B The general principles are the same, so I will not repeat them here.

[0318] It is worth noting that in this embodiment, the number of the first rectifier output terminal 511, the second rectifier output terminal 512, the first filter output terminal 521, and the second filter output terminal 522 are all two. However, in actual applications, the number of terminals can be increased or decreased according to the signal transmission requirements between the rectifier circuit 510, the filter circuit 520, the driver circuit 530, and the LED module 50. That is, the coupling terminals between each circuit can be one or more.

[0319] Figures 9A to 9CThe power supply module for the LED straight tube lamp shown, as well as the various embodiments of the power supply module for LED straight tube lamps below, are applicable not only to LED straight tube lamps, but also to various lamp holder specifications for light-emitting circuit architectures that include two pins for transmitting power, such as bulb lamps, PAL lamps, and in-tube energy-saving lamps (PLS lamps, PLD lamps, PLT lamps, PLL lamps, etc.). Regarding the implementation method for bulb lamps, this embodiment can be used in conjunction with the implementation methods in CN105465630A or CN105465663.

[0320] When the LED straight tube lamp of this application is applied to a power supply structure with at least one pin at both ends, it can be modified and then installed in a lamp holder containing a lamp drive circuit or a ballast (such as an electronic ballast or an inductive ballast), and is suitable for bypassing the ballast 505 to be powered by AC power (such as mains power).

[0321] Please see Figure 10A , Figure 10A This is a schematic diagram of the circuit architecture of the LED module according to the first embodiment of this application. The positive terminal of the LED module 50 is coupled to the first driving output terminal 531, and the negative terminal is coupled to the second driving output terminal 532. The LED module 50 includes at least one LED unit 632. When there are two or more LED units 632, they are connected in parallel. The positive terminal of each LED unit is coupled to the positive terminal of the LED module 50 to be coupled to the first driving output terminal 531; the negative terminal of each LED unit is coupled to the negative terminal of the LED module 50 to be coupled to the second driving output terminal 532. The LED unit 632 includes at least one LED component 631, namely the LED light source 202a in the aforementioned embodiment. When there are multiple LED components 631, the LED components 631 are connected in series, the positive terminal of the first LED component 631 is coupled to the positive terminal of the LED unit 632 to which it belongs, and the negative terminal of the first LED component 631 is coupled to the next (second) LED component 631. The positive terminal of the last LED component 631 is coupled to the negative terminal of the previous LED component 631, and the negative terminal of the last LED component 631 is coupled to the negative terminal of its corresponding LED unit 632. In this embodiment, the current detection signal labeled S531 represents the magnitude of the current flowing through the LED module 50, and it can be used to detect and control the LED module 50.

[0322] Please see Figure 10B , Figure 10BThis is a schematic diagram of the circuit architecture of the LED module according to the second embodiment of this application. The positive terminal of the LED module 50 is coupled to the first driving output terminal 531, and the negative terminal is coupled to the second driving output terminal 532. The LED module 50 of this embodiment includes at least two LED units 732, and the positive terminal of each LED unit 732 is coupled to the positive terminal of the LED module 50, and the negative terminal is coupled to the negative terminal of the LED module 50. The LED unit 732 includes at least two LED components 731, and the connection method of the LED components 731 within the LED unit 732 is as follows: Figure 10A As described, the negative terminal of LED component 731 is coupled to the positive terminal of the next LED component 731, the positive terminal of the first LED component 731 is coupled to the positive terminal of its corresponding LED unit 732, and the negative terminal of the last LED component 731 is coupled to the negative terminal of its corresponding LED unit 732. Furthermore, the LED units 732 in this embodiment are also interconnected. The positive terminals of the nth LED component 731 in each LED unit 732 are connected to each other, and their negative terminals are also connected to each other. Therefore, the connection between the LED components of the LED module 50 in this embodiment is a mesh connection. Similarly, the current detection signal S531 in this embodiment can represent the magnitude of the current flowing through the LED module 50, and is used for detecting and controlling the LED module 50. In practical applications, the number of LED components 731 included in the LED unit 732 is preferably 15-25, more preferably 18-22.

[0323] Please see Figure 10C , Figure 10C This is a schematic diagram of the LED module according to the first embodiment of this application. The connection relationship of the LED component 831 in this embodiment is the same as... Figure 10B As shown, this example uses three LED units. The positive wire 834 and negative wire 835 receive drive signals to provide power to each LED component 831. For example, the positive wire 834 is coupled to the first filter output terminal 521 of the aforementioned filter circuit 520, and the negative wire 835 is coupled to the second filter output terminal 522 of the aforementioned filter circuit 520 to receive the filtered signal. For ease of explanation, the nth LED in each LED unit is grouped into the same LED group 832.

[0324] The positive wire 834 connects to the first LED component 831 in the leftmost three LED units, i.e., the positive terminal of the three LED components in the leftmost LED group 832 as shown in the figure (left side). The negative wire 835 connects to the last LED component 831 in the three LED units, i.e., the negative terminal of the three LED components in the rightmost LED group 832 as shown in the figure (right side). The negative terminal of the first LED component 831 in each LED unit, the positive terminal of the last LED component 831, and the positive and negative terminals of the other LED components 831 are connected through the connecting wire 839.

[0325] In other words, the positive terminals of the three LED components 831 in the leftmost LED group 832 are connected to each other through the positive terminal wire 834, and their negative terminals are connected to each other through the leftmost connecting wire 839. Similarly, the positive terminals of the three LED components 831 in the second left LED group 832 are connected to each other through the leftmost connecting wire 839, and their negative terminals are connected to each other through the second left connecting wire 839. Since the negative terminals of the three LED components 831 in the leftmost LED group 832 and the positive terminals of the three LED components 831 in the second left LED group 832 are all connected to each other through the leftmost connecting wire 839, the negative terminal of the first LED component in each LED unit is connected to the positive terminal of the second LED component. This process continues to form a... Figure 10B The mesh connection shown.

[0326] It is worth noting that the width 836 of the portion of the connecting wire 839 connected to the positive electrode of the LED component 831 is smaller than the width 837 of the portion connected to the negative electrode of the LED component 831. This makes the area of ​​the negative electrode connection larger than the area of ​​the positive electrode connection. Furthermore, the width 837 is smaller than the width 838 of the portion of the connecting wire 839 that simultaneously connects to the positive electrode of one of the two adjacent LED components 831 and the negative electrode of the other, making the area of ​​the portion connected to both positive and negative electrodes larger than the area of ​​the portion connected only to the negative electrode and the area of ​​the portion connected only to the positive electrode. Therefore, this wiring architecture helps with heat dissipation of the LED component.

[0327] Furthermore, the positive conductor 834 may also include a positive lead 834a, and the negative conductor 835 may also include a negative lead 835a, so that both ends of the LED module have positive and negative connection points. This wiring architecture allows other circuits of the LED lamp's power module, such as the filter circuit 520, the first rectifier circuit 510, and the second rectifier circuit 540, to be coupled to the LED module through the positive and negative connection points of either end or both ends, increasing the flexibility of the actual circuit configuration.

[0328] Please see Figure 10D , Figure 10D This is a schematic diagram of the wiring of the LED module according to the second embodiment of this application. The connection relationship of the LED component 931 in this embodiment is the same as... Figure 10A As shown, this example uses three LED units, each containing seven LED components. The positive wire 934 and negative wire 935 receive drive signals to provide power to each LED component 931. For example, the positive wire 934 is coupled to the first filter output terminal 521 of the aforementioned filter circuit 520, and the negative wire 935 is coupled to the second filter output terminal 522 of the aforementioned filter circuit 520 to receive the filtered signal. For ease of explanation, the seven LED components in each LED unit are grouped into the same LED group 932.

[0329] The positive wire 934 connects to the left-hand positive terminal of the first (leftmost) LED component 931 in each LED group 932. The negative wire 935 connects to the right-hand negative terminal of the last (rightmost) LED component 931 in each LED group 932. In each LED group 932, the negative terminal of the leftmost LED component 931 of two adjacent LED components 931 is connected to the positive terminal of the rightmost LED component 931 via a connecting wire 939. In this way, the LED components of the LED group 932 are connected in series.

[0330] It is worth noting that the connecting wire 939 is used to connect the negative terminal of one of two adjacent LED components 931 to the positive terminal of the other. The negative wire 935 is used to connect the negative terminal of the last (rightmost) LED component 931 in each LED group. The positive wire 934 is used to connect the positive terminal of the first (leftmost) LED component 931 in each LED group. Therefore, their widths and the heat dissipation area for the LED components decrease in the order described above. That is, the width 938 of the connecting wire 939 is the largest, the width 937 of the negative wire 935 connecting to the negative terminal of the LED component 931 is the second largest, and the width 936 of the positive wire 934 connecting to the positive terminal of the LED component 931 is the smallest. Therefore, this wiring architecture helps with the heat dissipation of the LED components.

[0331] Furthermore, the positive conductor 934 may also include a positive lead 934a, and the negative conductor 935 may also include a negative lead 935a, so that both ends of the LED module have positive and negative connection points. This wiring architecture allows other circuits of the LED lamp's power module, such as the filter circuit 520, the first rectifier circuit 510, and the second rectifier circuit 540, to be coupled to the LED module through the positive and negative connection points of either end or both ends, increasing the flexibility of the actual circuit configuration.

[0332] Furthermore, Figure 10C and 10D The traces shown can be implemented using a flexible circuit board. For example, a flexible circuit board has a single circuit layer formed by etching. Figure 10C The positive lead 834, positive lead 834a, negative lead 835, negative lead 835a and connecting lead 839, and Figure 10D The positive lead wire 934, positive lead wire 934a, negative lead wire 935, negative lead wire 935a and connecting wire 939 are included.

[0333] Please see Figure 10E , Figure 10E This is a schematic diagram of the wiring of the LED module according to the third embodiment of this application. The connection relationship of the LED component 1031 in this embodiment is the same as... Figure 10BAs shown. In this embodiment, the configuration of the positive and negative wires (not shown) and their connection to other circuits are as described above. Figure 10C They are largely the same, the difference being that this embodiment will... Figure 10C The horizontally arranged LED components 831 (i.e., each LED component 831 is arranged with its positive and negative electrodes along the direction of wire extension) is changed to a vertically arranged LED component 1031 (i.e., the direction of the connection between the positive and negative electrodes of each LED component 1031 is perpendicular to the direction of wire extension), and the arrangement of the connecting wires 1039 is adjusted accordingly based on the arrangement direction of the LED components 1031.

[0334] More specifically, taking connecting wire 1039_2 as an example, connecting wire 1039_2 includes a narrower first long side with a width of 1037, a wider second long side with a width of 1038, and a bend connecting the two long sides. Connecting wire 1039_2 can be configured as a right-angled Z-shape, that is, the connection between each long side and the bend is at a right angle. Specifically, the first long side of connecting wire 1039_2 is configured corresponding to the second long side of the adjacent connecting wire 1039_3; similarly, the second long side of connecting wire 1039_2 is configured corresponding to the first long side of the adjacent connecting wire 1039_1. As can be seen from the above configuration, the connecting wires 1039 are arranged in the extending direction of their extended sides, and the first long side of each connecting wire 1039 is configured to correspond to the second long side of the adjacent connecting wire 1039; similarly, the second long side of each connecting wire 1039 is configured to correspond to the first long side of the adjacent connecting wire 1039, thereby making all connecting wires 1039 form a configuration with a consistent width. The configuration of other connecting wires 1039 can be referred to the description of connecting wire 1039_2 above.

[0335] Regarding the relative configuration of the LED components 1031 and the connecting wires 1039, taking connecting wire 1039_2 as an example, in this embodiment, the positive terminals of some LED components 1031 (e.g., the four LED components 1031 on the right) are connected to the first long side of connecting wire 1039_2 and are interconnected with each other through the first long side; while the negative terminals of these LED components 1031 are connected to the second long side of the adjacent connecting wire 1039_3 and are interconnected with each other through the second long side. On the other hand, the positive terminals of other LED components 1031 (e.g., the four LED components 1031 on the left) are connected to the first long side of connecting wire 1039_1, and the negative terminals are connected to the second long side of connecting wire 1039_2.

[0336] In other words, the positive terminals of the four LED components 1031 on the left are connected to each other through connecting wire 1039_1, and their negative terminals are connected to each other through connecting wire 1039_2. The positive terminals of the four LED components 831 on the right are connected to each other through connecting wire 1039_2, and their negative terminals are connected to each other through connecting wire 1039_3. Since the negative terminals of the four LED components 1031 on the left are connected to the positive terminals of the four LED components 1031 on the right through connecting wire 1039_2, the four LED components 1031 on the left can be simulated as the first LED component of the four LED units in the LED module, and the four LED components 1031 on the right can be simulated as the second LED component of the four LED units in the LED module, and so on, thus forming a... Figure 10B The mesh connection shown.

[0337] It is worth noting that, compared to Figure 10C In this embodiment, the LED component 1031 is changed to a vertical configuration, which can increase the gap between the LED components 1031 and widen the wiring of the connecting wires, thereby avoiding the risk of the wiring being easily punctured during lamp repair. It can also avoid the problem of insufficient copper foil coverage between the LED beads when there are many LED components 1031 that need to be arranged closely, which can cause short circuits due to solder beads.

[0338] On the other hand, by configuring the width 1037 of the first long side of the positive electrode connection portion to be smaller than the width 1038 of the second long side of the negative electrode connection portion, the area of ​​the LED component 1031 in the negative electrode connection portion can be larger than the area of ​​the positive electrode connection portion. Therefore, such a wiring architecture helps with heat dissipation of the LED component.

[0339] Please see Figure 10F , Figure 10F This is a schematic diagram of the LED module according to the fourth embodiment of this application. This embodiment is similar to the one described above. Figure 10E The embodiments are largely the same, with the only difference being that the connecting wire 1139 in this embodiment is implemented using a non-right-angle Z-shaped routing. In other words, in this embodiment, the turning portion forms an oblique routing, making the connection between each long side of the connecting wire 1139 and the turning portion non-right-angled. Under this configuration, in addition to the vertical arrangement of the LED components 1131 increasing the gap between the LED components 1031 and widening the routing of the connecting wire, the oblique arrangement of the connecting wire in this embodiment can avoid problems such as LED component displacement and offset due to uneven pads during LED component mounting. Similarly, the connecting wire 1139 in this embodiment can also be configured such that the width 1137 of the long side of the positive electrode connection portion is smaller than the width 1138 of the long side of the negative electrode connection portion, thereby also achieving the effect of improving heat dissipation characteristics.

[0340] Specifically, in applications using flexible circuit boards as lamp panels, vertical wiring (such as...) Figures 10C to 10E The configuration of the LED component (1131) creates regular white oil recesses at the bends of the conductors, causing the solder pads on the connecting conductors to be relatively raised. Since the soldered areas are not flat, the uneven surface may prevent the LED component from being properly mounted. Therefore, this embodiment, by adjusting the vertical traces to an oblique trace configuration, ensures uniform copper foil strength across the entire trace, preventing bulges or unevenness at specific locations. This makes it easier to mount the LED component 1131 onto the conductors, improving the reliability of lamp assembly. Furthermore, since each LED unit in this embodiment only travels along the oblique substrate once on the lamp board, the overall strength of the lamp board is significantly increased, preventing bending and shortening the board length.

[0341] In another exemplary embodiment, copper foil can be covered around the pads of the LED component 1131 to offset the offset during mounting of the LED component 1131 and avoid short circuits caused by solder balls.

[0342] Please see Figure 10G , Figure 10G This is a schematic diagram of the LED module according to the fifth embodiment of this application. This embodiment is similar to... Figure 10C The two are largely the same, with the main difference being that in this embodiment, the corresponding points between the connecting wires 1239 (excluding the pads of the LED component 1231) are routed at an angle. By adjusting the vertical routing to an angled configuration, this embodiment ensures uniform copper foil strength across the entire routing path, preventing bulges or unevenness in specific locations. This makes it easier to attach the LED component 1131 to the wires, improving the reliability of lamp assembly.

[0343] In addition, under the configuration of this embodiment, the color temperature point (CTP) can also be uniformly set between LED components 1231, such as... Figure 10H As shown, Figure 10H This is a schematic diagram of the LED module wiring according to the sixth embodiment of this application. By uniformly setting the color temperature points (CTPs) in the LED assembly configuration, after the wires 1234 and 1239 are spliced ​​to form the LED module, the corresponding CTPs on each wire 1234 and 1239 can be on the same line. In this way, during soldering, all the color temperature points on the LED module can be covered with only a few strips of tape (as shown in the figure, if each wire has 3 color temperature points, only 3 strips of tape are needed), thereby improving the smoothness of the assembly process and saving assembly time.

[0344] Please see Figure 10I , Figure 10I This is a schematic diagram of the wiring of an LED module according to the seventh embodiment of this application. This embodiment is... Figure 10C The wiring of the LED module has been changed from a single-layer circuit layer to a double-layer circuit layer, mainly by moving the positive lead 834a and the negative lead 835a to the second circuit layer.

[0345] As a variation of the above solution, this application also provides an LED straight tube light, wherein at least some of the electronic components of the power module of the LED straight tube light are disposed on the lamp board: that is, at least some of the electronic components are printed or embedded on the lamp board using PEC (Printed Electronic Circuits) technology.

[0346] In one embodiment of this application, all electronic components of the power module are disposed on the lamp board. The manufacturing process is as follows: substrate preparation (flexible printed circuit board preparation) → spraying metallic nano-ink → spraying passive components / active devices (power module) → drying / sintering → spraying interlayer connection bumps → spraying insulating ink → spraying metallic nano-ink → spraying passive components and active devices (in sequence to form the included multilayer board) → spraying surface solder pads → spraying solder resist and soldering LED components.

[0347] In the above embodiment, if all the electronic components of the power module are placed on the lamp board, the LED tube lamp's pins only need to be connected to both ends of the lamp board via soldered wires to achieve electrical connection between the pins and the lamp board. This eliminates the need for a separate substrate for the power module, allowing for further optimization of the lamp holder design. Preferably, the power module is placed at both ends of the lamp board to minimize the impact of its heat generation on the LED components. This embodiment improves the overall reliability of the power module by reducing soldering.

[0348] If some electronic components (such as resistors and capacitors) are printed on the lamp board, while larger components such as inductors and electrolytic capacitors are placed inside the lamp holder, the lamp board manufacturing process is the same as above. This optimizes the lamp holder design by placing some electronic components on the lamp board and rationally arranging the power supply module.

[0349] As a variation of the above solution, the electronic components of the power module can also be embedded into the lamp board. That is, the electronic components are embedded into the flexible lamp board. Preferably, this can be achieved using copper-clad laminate (CCL) containing resistive / capacitive elements or screen printing with related inks; alternatively, inkjet printing technology can be used to embed passive components, where an inkjet printer directly prints conductive ink and related functional inks (representing passive components) onto designated locations within the lamp board. Then, after UV light treatment or drying / sintering, the lamp board with embedded passive components is formed. The electronic components embedded in the lamp board include resistors, capacitors, and inductors; in other embodiments, active components are also applicable. This design optimizes the lamp holder design by rationally arranging the power module. (Due to the partial use of embedded resistors and capacitors, this embodiment saves valuable PCB surface space, reducing the PCB size, weight, and thickness. Simultaneously, by eliminating the solder joints of these resistors and capacitors (solder joints are the most fault-prone parts of a PCB), the reliability of the power module is improved. It also shortens the length of conductors on the PCB and allows for a more compact device layout, thus improving electrical performance.)

[0350] The following describes the manufacturing methods for embedded capacitors and resistors.

[0351] A common approach uses embedded capacitors, employing a concept called distributed capacitance or planar capacitance. A very thin insulating layer is pressed onto a copper layer. These typically appear in pairs, as power and ground planes. The very thin insulating layer allows for a very small distance between the power and ground planes. Such capacitance can also be achieved using traditional metallized vias. Essentially, this method creates a large, parallel plate capacitor on the circuit board.

[0352] Some high-capacitance products are either distributed capacitors or discrete embedded capacitors. Higher capacitance is achieved by filling the insulating layer with barium titanate (a material with a high dielectric constant).

[0353] A common method for manufacturing embedded resistors is to use resistive adhesives. These are resins doped with conductive carbon or graphite, used as fillers, screen-printed to designated locations, and then laminated into the circuit board after processing. The resistors are connected to other electronic components on the circuit board via metallized holes or microvias. Another method is the Ohmega-Ply method: it uses a bimetallic layer structure—a copper layer and a thin nickel alloy layer form the resistor elements, creating a layered resistor relative to the bottom layer. Various nickel resistors with copper terminals are then formed by etching the copper and nickel alloy layers. These resistors are then laminated into the inner layers of the circuit board.

[0354] In one embodiment of this application, wires are directly printed on the inner wall of a glass tube (arranged as lines), and LED components are directly attached to the inner wall to be electrically connected to each other through these wires. Preferably, LED components are directly attached to the wires on the inner wall in the form of chips (with connection points at both ends of the wires, through which the LED components are connected to the power module). After attachment, phosphor is dropped onto the chip (to produce white light when the LED tube light is working, or other colors of light may also be used).

[0355] The luminous efficacy of the LED module of this application is above 80 lm / W, preferably above 120 lm / W, and even more preferably above 160 lm / W. The LED module can be a white light generated by mixing the light of a monochromatic LED chip with phosphor, and its main wavelength of spectrum is 430-460nm and 550-560nm, or 430-460nm, 540-560nm and 620-640nm.

[0356] Incidentally, the aforementioned Figures 10A to 10I The connection method of the LED module 50 in the embodiment is not limited to the implementation of a straight tube lamp. It can be applied to various types of AC power-powered LED lamps (i.e., ballastless LED lamps), such as LED bulbs, LED filament lamps or integrated LED lamps. This application is not limited thereto.

[0357] Furthermore, as mentioned above, the electronic components of the power module can be mounted on a circuit board within the lamp panel or lamp head. To enhance the advantages of the power module, some capacitors in certain embodiments are surface-mount capacitors (e.g., ceramic surface-mount capacitors), which are mounted on a circuit board within the lamp panel or lamp head. However, such surface-mount capacitors emit significant noise during use due to the piezoelectric effect, affecting user comfort. To address this issue, in the LED straight tube lamp disclosed herein, a suitable hole or slot can be drilled directly below the surface-mount capacitor. This alters the vibration system formed by the surface-mount capacitor and the circuit board supporting it under the piezoelectric effect, thereby significantly reducing the emitted noise. The shape of the edge or periphery of this hole or slot can be approximately circular, elliptical, or rectangular, and it is located in the conductive layer of the lamp panel or within the circuit board of the lamp head, below the surface-mount capacitor.

[0358] Please refer to Figure 10J , Figure 10JThis is a schematic diagram of the circuit architecture of an LED module according to the third embodiment of this application. In this embodiment, the LED module 50 includes a switching circuit 51 and multiple LED units 52. The multiple LED units can be configured with different color temperatures. For example, the color temperature of LED unit 52-1 can be set to 3500K, the color temperature of LED unit 52-2 can be set to 4500K, and the color temperature of the nth (n is an integer greater than or equal to 1) LED unit 52-n can be set to 5500K. LED units 52-1, 52-2...52-n are electrically connected to the switching circuit and the second drive output terminal 532, respectively. The switching circuit is electrically connected to the first drive output terminal 531.

[0359] In certain applications, when it is necessary to switch the color temperature of the LED light, the switching circuit 51 electrically connects the LED unit with the set color temperature to the power supply circuit. More specifically, if the color temperature of LED unit 52-1 is 3500K, when the LED light is set to 3500K, the switching circuit 51 electrically connects LED unit 52-1 to the power supply circuit, that is, LED unit 52-1 is electrically connected to the first drive output terminal 531 and the second drive output terminal 532. LED unit 52-1 receives the drive signal from the drive circuit 530 and lights up, at which time the color temperature of the LED light is 3500K. When the LED light is set to another color temperature, the switching circuit 51 simply connects the LED unit with the other color temperature to the power supply circuit.

[0360] refer to Figure 10K This is a schematic diagram of the switching circuit according to the first embodiment of this application. In this embodiment, the LED module includes three LED units 52-1, 52-2, and 52-3 with different color temperatures. The switching circuit 51 includes a switching switch 51s1, which is a three-stage mechanical switch. When the switching switch 51s1 is in the first stage, LED unit 52-1 is connected to the power supply circuit, that is, LED unit 51-2 is electrically connected to the first drive output terminal 531 and the second drive output terminal 532 respectively; when the switching switch is in the second stage, LED unit 52-2 is connected to the power supply circuit, that is, LED unit 52-2 is electrically connected to the first drive output terminal 531 and the second drive output terminal 532 respectively; when the switching switch 51s1 is in the third stage, LED unit 52-3 is connected to the power supply circuit, that is, LED unit 52-3 is electrically connected to the first drive output terminal 531 and the second drive output terminal 532 respectively.

[0361] In this embodiment, the color temperature of LED unit 52-1 is 3500K, the color temperature of LED unit 52-2 is 4500K, and the color temperature of LED unit 52-3 is 5500K. When the switch 51s1 is in the first position, the color temperature of the LED is set to 3500K, and LED unit 52-1 is lit; when the switch 51s1 is in the second position, the color temperature of the LED is set to 4500K, and LED unit 52-2 is lit; when the switch 51s1 is in the third position, the color temperature of the LED is set to 5500K, and LED unit 52-3 is lit.

[0362] In other embodiments, the LED module 50 may include more LED units, which are set to different color temperatures. In this way, the LED module can be set to the corresponding color temperature by switching different LED units connected to the power supply circuit, thereby achieving the purpose of color temperature switching to meet the usage requirements of different occasions.

[0363] refer to Figure 10L This is a schematic diagram of the circuit structure of the switching circuit according to the second embodiment of this application. In this embodiment, the switching circuit 51 includes switching switches 51s1, 51s2, and 51s3, as well as a control unit 51-1 and an input unit 51-2. The first pin of switching switch 51s1 is electrically connected to the first drive output terminal 531, its second pin is electrically connected to the LED unit 52-1, and its control terminal is electrically connected to the control unit 51-1; the first pin of switching switch 51s2 is electrically connected to the first drive output terminal 531, its second pin is electrically connected to the LED unit 52-2, and its control terminal is electrically connected to the control unit 51-1; the first pin of switching switch 51s3 is electrically connected to the first drive output terminal 531, its second pin is electrically connected to the LED unit 52-3, and its control terminal is electrically connected to the control unit 51-1. LED unit 52-1 is electrically connected to switch 51s1 and the second drive output terminal 532; LED unit 52-2 is electrically connected to switch 51s2 and the second drive output terminal 532; LED unit 52-3 is electrically connected to switch 51s3 and the second drive output terminal 532. Input unit 51-2 is electrically connected to control unit 51-1.

[0364] In this embodiment, the switching switches 51s1, 51s2, and 51s3 are field-effect transistors. In other embodiments, other types of electronic switches may be used, and the present invention is not limited thereto. LED units 52-1, 52-2, and 52-3 are set to different color temperatures; for example, LED unit 52-1 has a color temperature of 3500K, LED unit 52-2 has a color temperature of 4500K, and LED unit 52-3 has a color temperature of 5500K. The input unit 51-2 generates a color temperature adjustment signal based on user operation. The control unit 51-1 receives this color temperature adjustment signal and controls the switching switches accordingly. When the input unit 51-2 sets the color temperature to 3500K, the control unit 51-1 closes the switching switch 52s1, connecting LED unit 52-1 to the power supply circuit, receiving the drive signal, and lighting it. The other switching switches are open. At this time, the color temperature of the LED is 3500K. When the input unit 51-2 sets the color temperature to 4500K, the control unit 51-1 closes the switch 52s2, connecting the LED unit 52-2 to the power supply circuit, allowing it to receive the drive signal and light up. Other switches are then open. At this time, the color temperature of the LED is 4500K. This process continues in the same manner.

[0365] It should be noted that input unit 51-2 can only set the color temperature settings already present in the LED unit. In this embodiment, input unit 52-2 can input color temperatures of 3500K, 4500K, and 5500K. Input unit 51-2 can be implemented using a multi-segment switch, where different positions of the multi-segment switch correspond to different color temperatures, and adjusting the position of the multi-segment switch can adjust the color temperature. This multi-segment switch can be installed on the LED lamp head or in a wall switch panel; this invention is not limited to this.

[0366] In other embodiments, the input unit 51-2 may also generate the color temperature adjustment signal in other ways, and the present invention is not limited thereto.

[0367] In some embodiments, the switching circuit 51 can connect multiple LED units to the power supply circuit. For example, switching switches 51s1 and 51s2 can be turned on simultaneously, and LED units 52-1 and 52-2 can be connected to the power supply circuit and lit up at the same time. At this time, the color temperature of the LED lamp is the result of the superposition of the color temperatures of LED units 52-1 and 52-2.

[0368] refer to Figure 10MThis is a schematic diagram of the circuit structure of a switching circuit according to another embodiment of this application. In this embodiment, the switching circuit 51 includes a dual-channel three-position toggle switch 51s1 (hereinafter referred to as toggle switch 51s1). The toggle switch 51s1 includes 8 electrical pins. Pins 1-4 form a first-channel three-position switch, with the common pin being pin 1. Pins 5-8 form a second-channel three-position switch, with the common pin being pin 5. The two three-position switches operate simultaneously. That is, when the first-channel switch is conducting pins 1 and 2, the second-channel switch is conducting pins 5 and 6; when the first-channel switch is conducting pins 1 and 3, the second-channel switch is conducting pins 5 and 7; when the first-channel switch is conducting pins 1 and 4, the second-channel switch is conducting pins 5 and 8.

[0369] The operating principle of the switching circuit 51 is explained below. When the switch 51s1 is switched to the first segment, the first and second pins are turned on, and the fifth and sixth pins are also turned on, as shown in the figure. The first and fifth pins of the switch 51s1 are electrically connected to the first drive output terminal 531, and the second and sixth pins of the switch 51s1 are electrically connected to the LED unit 52-1. The LED unit 52-1 is electrically connected to the second drive output terminal 532. At this time, the LED unit 52-1 is connected to the power supply circuit and lights up by receiving the drive signal. When the switch 51s1 is switched to the second segment, the first and third pins are turned on, and the fifth and seventh pins are also turned on. The fifth and seventh pins of the switch 51s1 are electrically connected to the LED unit 52-2, and the LED unit 52-2 is connected to the power supply circuit and lights up by receiving the drive signal. When the switch 51s1 is switched to the third segment, the first and fourth pins are turned on, and the fifth and eighth pins are also turned on. The fourth pin of the switch 51s1 is electrically connected to LED unit 52-1, and the eighth pin of the switch 51s1 is electrically connected to LED unit 52-2. At this time, LED units 52-1 and 52-2 are simultaneously connected to the power supply circuit and illuminate upon receiving the drive signal. In this embodiment, LED units 52-1 and 52-2 are set to different color temperatures. By switching the three positions of the switch 51s1, the three color temperatures of the LED lamp can be switched.

[0370] In some embodiments, different LED units may be set to different colors, but this application is not limited thereto.

[0371] pass Figure 10J-10M The circuit configuration allows for easy switching of LED light color temperature. Different color temperature LED units are incorporated into the LED light; switching the power supply circuit between these units achieves the desired color temperature change. In design and production, only one model of LED light needs to be manufactured to meet customer demands for different color temperature lamps.

[0372] Please see Figure 11A , Figure 11A This is a schematic diagram of the circuit architecture of the rectifier circuit according to the first embodiment of this application. The rectifier circuit 610 is a bridge rectifier circuit, including a first rectifier diode 611, a second rectifier diode 612, a third rectifier diode 613, and a fourth rectifier diode 614, used to perform full-wave rectification of the received signal. The anode of the first rectifier diode 611 is coupled to the second rectified output terminal 512, and the cathode is coupled to the second pin 502. The anode of the second rectifier diode 612 is coupled to the second rectified output terminal 512, and the cathode is coupled to the first pin 501. The anode of the third rectifier diode 613 is coupled to the second pin 502, and the cathode is coupled to the first rectified output terminal 511. The anode of the rectifier diode 614 is coupled to the first pin 501, and the cathode is coupled to the first rectified output terminal 511.

[0373] In this embodiment, the rectifier circuit 610 can correctly output the rectified signal regardless of whether the received signal is an AC signal or a DC signal.

[0374] Please see Figure 11B , Figure 11B This is a schematic diagram of the circuit architecture of the rectifier circuit according to the second embodiment of this application. The rectifier circuit 710 includes a first rectifier diode 711 and a second rectifier diode 712 for half-wave rectification of the received signal. The anode of the first rectifier diode 711 is coupled to the second pin 502, and the cathode is coupled to the first rectified output terminal 511. The anode of the second rectifier diode 712 is coupled to the first rectified output terminal 511, and the cathode is coupled to the first pin 501. The second rectified output terminal 512 may be omitted or grounded depending on the actual application.

[0375] The rectified signal output by rectifier circuit 710 is a half-wave rectified signal.

[0376] in, Figure 11A and Figure 11B When the first pin 501 and the second pin 502 of the rectifier circuit shown are changed to the third pin 503 and the fourth pin 504, it can be used as... Figure 9B The second rectifier circuit 540 is shown. More specifically, in an exemplary embodiment, the second rectifier circuit 540 is shown. Figure 11A The full-wave / full-bridge rectifier circuit 610 shown is used in Figure 9B When using a dual-input lamp, the configuration of the first rectifier circuit 510 and the second rectifier circuit 540 can be as follows: Figure 11C As shown.

[0377] Please see Figure 11C , Figure 11CThis is a schematic diagram of the circuit architecture of the rectifier circuit according to the third embodiment of this application. The architecture of rectifier circuit 840 is the same as that of rectifier circuit 810, both being bridge rectifier circuits. Rectifier circuit 810 includes first to fourth rectifier diodes 611-614, configured as described above. Figure 11A As described in the embodiment, the rectifier circuit 840 includes a fifth rectifier diode 641, a sixth rectifier diode 642, a seventh rectifier diode 643, and an eighth rectifier diode 644 for full-wave rectification of the received signal. The anode of the fifth rectifier diode 641 is coupled to the second rectified output terminal 512, and its cathode is coupled to the fourth terminal 504. The anode of the sixth rectifier diode 642 is coupled to the second rectified output terminal 512, and its cathode is coupled to the third terminal 503. The anode of the seventh rectifier diode 643 is coupled to the second terminal 502, and its cathode is coupled to the first rectified output terminal 511. The anode of the rectifier diode 614 is coupled to the third terminal 503, and its cathode is coupled to the first rectified output terminal 511.

[0378] In this embodiment, rectifier circuits 840 and 810 are configured accordingly, with the only difference being rectifier circuit 810 (which can be compared to rectifier circuit 810). Figure 9B The input terminal of the first rectifier circuit 510 is coupled to the first pin 501 and the second pin 502, while the rectifier circuit 840 (which can be compared here as...) Figure 9B The input terminal of the second rectifier circuit 540 is coupled to the third pin 503 and the fourth pin 504. In other words, this embodiment uses a two-full-wave rectifier circuit architecture to realize a dual-terminal, dual-pin circuit structure.

[0379] To go further, in Figure 10C Although the rectifier circuit in this embodiment is implemented with a double-ended, double-pin configuration, it can also power LED tube lights using either a single-ended or double-ended, single-pin power supply method. Specific operation is explained below:

[0380] In the case of single-ended power supply, the external drive signal can be applied to the first pin 501 and the second pin 502, or to the third pin 503 and the fourth pin 504. When the external drive signal is applied to the first pin 501 and the second pin 502, the rectifier circuit 810 will... Figure 9A The operation described in this embodiment performs full-wave rectification of the external drive signal, while the rectifier circuit 840 does not operate. Conversely, when the external drive signal is applied to the third pin 503 and the fourth pin 504, the rectifier circuit 840 will operate according to... Figure 9A The operation described in the embodiment performs full-wave rectification of the external drive signal, while the rectifier circuit 810 does not operate.

[0381] When powered by a single pin on both ends, the external drive signal can be applied to pins 501 and 504, or to pins 502 and 503. When the external drive signal is applied to pins 501 and 504, and the external drive signal is an AC signal, during the positive half-wave of the AC signal, the AC signal flows in sequentially through pin 501, the fourth rectifier diode 614, and the first rectifier output terminal 511, and flows out sequentially through the second rectifier output terminal 512, the fifth rectifier diode 641, and the fourth pin 504. During the negative half-wave of the AC signal, the AC signal flows in sequentially through pin 504, the seventh rectifier diode 643, and the first rectifier output terminal 511, and flows out sequentially through the second rectifier output terminal 512, the second rectifier diode 612, and the first pin 501. Therefore, regardless of whether the AC signal is in the positive or negative half-wave, the anode of the rectified signal is always located at the first rectified output terminal 511, and the cathode is always located at the second rectified output terminal 512. According to the above operating instructions, the second rectified diode 612 and the fourth rectified diode 614 in the rectified circuit 810, together with the fifth rectified diode 641 and the seventh rectified diode 643 in the rectified circuit 840, perform full-wave rectification of the AC signal, and the output rectified signal is a full-wave rectified signal.

[0382] On the other hand, when an external driving signal is applied to the second pin 502 and the third pin 503, and the external driving signal is an AC signal, during the positive half-wave period of the AC signal, the AC signal flows in sequentially through the third pin 503, the eighth rectifier diode 644, and the first rectifier output terminal 511, and flows out sequentially through the second rectifier output terminal 512, the first rectifier diode 611, and the second pin 502. During the negative half-wave period of the AC signal, the AC signal flows in sequentially through the second pin 502, the third rectifier diode 613, and the first rectifier output terminal 511, and flows out sequentially through the second rectifier output terminal 512, the sixth rectifier diode 642, and the third pin 503. Therefore, regardless of whether the AC signal is in the positive or negative half-wave, the positive terminal of the rectified signal is always located at the first rectifier output terminal 511, and the negative terminal is always located at the second rectifier output terminal 512. According to the above operating instructions, the first rectifier diode 611 and the third rectifier diode 613 in the rectifier circuit 810, together with the sixth rectifier diode 642 and the eighth rectifier diode 644 in the rectifier circuit 840, perform full-wave rectification of the AC signal, and the output rectified signal is a full-wave rectified signal.

[0383] When powered by a dual-terminal, dual-pin connector, the operation of rectifier circuits 810 and 840 can be referred to the above. Figure 11A The description of the embodiment will not be repeated here. The rectified signal generated by rectifier circuits 810 and 840 is superimposed on the first rectified output terminal 511 and the second rectified output terminal 512 and then output to the downstream circuit.

[0384] In one exemplary embodiment, the rectifier circuit 510 may be configured as follows: Figure 11D As shown. Please see below. Figure 11D , Figure 11D This is a schematic diagram of the circuit architecture of the rectifier circuit according to the fourth embodiment of this application. The rectifier circuit 910 includes first to fourth rectifier diodes 911-914, configured as described above. Figure 11A As described in the embodiment. In this embodiment, the rectifier circuit 910 further includes a fifth rectifier diode 915 and a sixth rectifier diode 916. The anode of the fifth rectifier diode 915 is coupled to the second rectified output terminal 512, and the cathode is coupled to the third terminal 503. The anode of the sixth rectifier diode 916 is coupled to the third terminal 503, and the cathode is coupled to the first rectified output terminal 511. The fourth terminal 504 is in a floating state here.

[0385] More specifically, the rectifier circuit 510 in this embodiment can be considered as a rectifier circuit with three bridge arm units, each providing an input signal receiver. For example, the first rectifier diode 911 and the third rectifier diode 913 form the first bridge arm unit, which receives the signal at the second pin 502; the second rectifier diode 912 and the fourth rectifier diode 914 form the second bridge arm unit, which receives the signal at the first pin 501; and the fifth rectifier diode 915 and the sixth rectifier diode 916 form the third bridge arm unit, which receives the signal at the third pin 503. Full-wave rectification can be performed as long as two of the three bridge arm units receive AC signals of opposite polarity. Based on this, in Figure 11D The rectifier circuit configuration in this embodiment is also compatible with single-ended power supply, double-ended single-pin power supply, and double-ended double-pin power supply. Specific operational instructions are as follows:

[0386] When powered on from one end, an external drive signal is applied to the first pin 501 and the second pin 502. At this time, the first to fourth rectifier diodes 911-914 operate as described above. Figure 11A As described in the embodiment, the fifth rectifier diode 915 and the sixth rectifier diode 916 do not operate.

[0387] When powered by a single pin on both ends, the external drive signal can be applied to pins 501 and 503, or to pins 502 and 503. When the external drive signal is applied to pins 501 and 503, and the external drive signal is an AC signal, during the positive half-wave of the AC signal, the AC signal flows in sequentially through pin 501, the fourth rectifier diode 914, and the first rectifier output terminal 511, and flows out sequentially through the second rectifier output terminal 512, the fifth rectifier diode 915, and the third pin 503. During the negative half-wave of the AC signal, the AC signal flows in sequentially through pin 503, the sixth rectifier diode 916, and the first rectifier output terminal 511, and flows out sequentially through the second rectifier output terminal 512, the second rectifier diode 912, and the first pin 501. Therefore, regardless of whether the AC signal is in the positive or negative half-wave, the positive terminal of the rectified signal is always located at the first rectified output terminal 511, and the negative terminal is always located at the second rectified output terminal 512. According to the above operating instructions, the second rectified diode 912, the fourth rectified diode 914, the fifth rectified diode 915, and the sixth rectified diode 916 in the rectified circuit 910 perform full-wave rectification of the AC signal, and the output rectified signal is a full-wave rectified signal.

[0388] On the other hand, when an external driving signal is applied to the second pin 502 and the third pin 503, and the external driving signal is an AC signal, during the positive half-wave period of the AC signal, the AC signal flows in sequentially through the third pin 503, the sixth rectifier diode 916, and the first rectifier output terminal 511, and flows out sequentially through the second rectifier output terminal 512, the first rectifier diode 911, and the second pin 502. During the negative half-wave period of the AC signal, the AC signal flows in sequentially through the second pin 502, the third rectifier diode 913, and the first rectifier output terminal 511, and flows out sequentially through the second rectifier output terminal 512, the fifth rectifier diode 915, and the third pin 503. Therefore, regardless of whether the AC signal is in the positive or negative half-wave, the positive terminal of the rectified signal is always located at the first rectifier output terminal 511, and the negative terminal is always located at the second rectifier output terminal 512. According to the above operating instructions, the first rectifier diode 911, the third rectifier diode 913, the fifth rectifier diode 915 and the sixth rectifier diode 916 in the rectifier circuit 910 perform full-wave rectification of the AC signal, and the output rectified signal is a full-wave rectified signal.

[0389] When the power is supplied through a dual-terminal, dual-pin connection, the operation of the first to fourth rectifier diodes 911-914 can be referred to the above. Figure 11AThe description of the embodiments will not be repeated here. Furthermore, if the signal polarity of the third pin 503 is the same as that of the first pin 501, the operation of the fifth rectifier diode 915 and the sixth rectifier diode 916 is similar to that of the second rectifier diode 912 and the fourth rectifier diode 914 (i.e., the first bridge arm unit). On the other hand, if the signal polarity of the third pin 503 is the same as that of the second pin 502, the operation of the fifth rectifier diode 915 and the sixth rectifier diode 916 is similar to that of the first rectifier diode 911 and the third rectifier diode 913 (i.e., the second bridge arm unit).

[0390] Please see Figure 11E , Figure 11E This is a schematic diagram of the circuit architecture of the rectifier circuit according to the fifth embodiment of this application. Figure 11E and Figure 11D They are largely the same, the difference lies in Figure 11E The input terminal of the first rectifier circuit 910 is further coupled to the endpoint switching circuit 941. In this embodiment, the endpoint switching circuit 941 includes fuses 947 and 948. One end of fuse 947 is coupled to the first pin 501, and the other end is coupled to the common node of the second rectifier diode 912 and the fourth rectifier diode 914 (i.e., the input terminal of the first bridge arm unit). One end of fuse 948 is coupled to the second pin 502, and the other end is coupled to the common node of the first rectifier diode 911 and the third rectifier diode 913 (i.e., the input terminal of the second bridge arm unit). Therefore, when the current flowing through either the first pin 501 or the second pin 502 exceeds the rated current of fuses 947 and 948, fuses 947 and 948 will melt and open the circuit, thereby achieving overcurrent protection. In addition, if only one of fuses 947 and 948 blows (for example, if the overcurrent situation only occurs briefly and is then eliminated), the rectifier circuit of this embodiment can continue to operate based on the dual-terminal single-pin power supply mode after the overcurrent situation is eliminated.

[0391] Please see Figure 11F , Figure 11F This is a schematic diagram of the circuit architecture of the rectifier circuit according to the sixth embodiment of this application. Figure 11F and Figure 11D They are largely the same, the difference lies in Figure 11F The two pins 503 and 504 are connected together by a thin wire 917. Compared to the aforementioned... Figure 11D In the 11E embodiment, when a dual-ended single-pin power supply is used, the rectifier circuit of this embodiment can operate normally regardless of whether the external drive signal is applied to the third pin 503 or the fourth pin 504. Furthermore, if the third pin 503 and the fourth pin 504 are incorrectly connected to a single-ended power supply lamp holder, the thin wire 917 of this embodiment can reliably melt, so that when the lamp is inserted back into the correct lamp holder, the straight lamp using this rectifier circuit can still maintain normal rectification operation.

[0392] As can be seen from the above, Figures 11C to 11F The rectifier circuit in this embodiment is compatible with single-ended power input, double-ended single-pin power input, and double-ended double-pin power input scenarios, thereby improving the overall application environment compatibility of LED straight tube lights. Furthermore, considering the actual circuit layout, Figures 11D to 11F The embodiment requires only three pads to connect to the corresponding lamp holder pins in the internal circuit configuration of the lamp tube, which significantly contributes to the improvement of the overall process yield.

[0393] Please see Figure 12A , Figure 12A This is a circuit block diagram of the filter circuit according to the first embodiment of this application. The first rectifier circuit 510 shown in the diagram is only for illustrating the connection relationship and does not mean that the filter circuit 520 includes the first rectifier circuit 510. The filter circuit 520 includes a filter unit 523, coupled to the first rectifier output terminal 511 and the second rectifier output terminal 512, to receive the rectified signal output by the rectifier circuit and filter out the ripple in the rectified signal before outputting the filtered signal. Therefore, the waveform of the filtered signal is smoother than that of the rectified signal. The filter circuit 520 may also further include a filter unit 524, coupled between the rectifier circuit and the corresponding pin, for example: the first rectifier circuit 510 and the first pin 501, the first rectifier circuit 510 and the second pin 502, the second rectifier circuit 540 and the third pin 503, and the second rectifier circuit 540 and the fourth pin 504, to filter specific frequencies to remove specific frequencies of external driving signals. In this embodiment, the filter unit 524 is coupled between the first pin 501 and the first rectifier circuit 510. The filter circuit 520 may further include a filter unit 525 coupled between one of the first pin 501 and the second pin 502 and a diode in one of the first rectifier circuits 510, or between one of the third pin 503 and the fourth pin 504 and a diode in one of the second rectifier circuits 540, to reduce or filter electromagnetic interference (EMI). In this embodiment, the filter unit 525 is coupled between the first pin 501 and a diode (not shown) in one of the first rectifier circuits 510.

[0394] In some embodiments, the filter circuit 520 may further include a negative voltage cancellation unit 526. The negative voltage cancellation unit 526 is coupled to the filter unit 523 and is used to eliminate the negative voltage that may be generated when the filter unit 523 resonates, thereby preventing damage to the chip or controller in the subsequent drive circuit. Specifically, the filter unit 523 itself is typically a circuit formed by a combination of resistors, capacitors, or inductors. Due to the characteristics of capacitors and inductors, the filter unit 523 exhibits purely resistive properties at a specific frequency (i.e., the resonant point). At the resonant point, the signal received by the filter unit 523 is amplified and output, thus signal oscillation is observed at the output of the filter unit 523. When the oscillation amplitude is too large, such that the trough level is lower than the ground level, a negative voltage is generated at the filter output terminals 521 and 522. This negative voltage is applied to the subsequent circuit and poses a risk of damage to the subsequent circuit. The negative pressure elimination unit 528 can activate an energy release circuit when the negative pressure is generated, so that the reverse current caused by the negative pressure can be released through the energy release circuit and return to the bus, thereby preventing the reverse current from flowing into the subsequent circuit.

[0395] Since filter units 524 and 525 and negative pressure elimination unit 526 can be added or omitted depending on the actual application, they are represented by dashed lines in the figure.

[0396] Please see Figure 12B , Figure 12B This is a schematic diagram of the circuit architecture of the filtering unit according to the first embodiment of this application. The filtering unit 623 includes a capacitor 625. One end of the capacitor 625 is coupled to the first rectified output terminal 511 and the first filtered output terminal 521, and the other end is coupled to the second rectified output terminal 512 and the second filtered output terminal 522, so as to perform low-pass filtering on the rectified signal output from the first rectified output terminal 511 and the second rectified output terminal 512 to filter out the high-frequency components in the rectified signal to form a filtered signal, which is then output from the first filtered output terminal 521 and the second filtered output terminal 522.

[0397] Please see Figure 12C , Figure 12C This is a schematic diagram of the circuit architecture of the filter unit according to the second embodiment of this application. The filter unit 723 is a π-type filter circuit, including a capacitor 725, an inductor 726, and a capacitor 727. One end of the capacitor 725 is coupled to the first rectified output terminal 511 and simultaneously coupled to the first filtered output terminal 521 through the inductor 726, and the other end is coupled to the second rectified output terminal 512 and the second filtered output terminal 522. The inductor 726 is coupled between the first rectified output terminal 511 and the first filtered output terminal 521. One end of the capacitor 727 is coupled to the first rectified output terminal 511 and simultaneously coupled to the first filtered output terminal 521 through the inductor 726, and the other end is coupled to the second rectified output terminal 512 and the second filtered output terminal 522.

[0398] In terms of equivalence, the 723 filter unit is more efficient than... Figure 12B The filter unit 623 shown includes an inductor 726 and a capacitor 727. Furthermore, the inductor 726 and capacitor 727, like capacitor 725, also provide low-pass filtering. Therefore, the filter unit 723 in this embodiment is superior to... Figure 12B The filter unit 623 shown has better high-frequency filtering capability, and the waveform of the output filtered signal is smoother. In some embodiments, the filter unit 723 may further include an inductor 728, wherein the inductor 728 is connected in series between the second rectified output terminal 512 and the second filtered output terminal 522. The inductance values ​​of the inductors 726 and 728 in the above embodiments are preferably selected from the range of 10nH-10mH. The capacitance values ​​of the capacitors 625, 725, and 727 are preferably selected from the range of 100pF-1uF.

[0399] Please see Figure 13A , Figure 13A This is a circuit block diagram of the driving circuit according to the first embodiment of this application. The driving circuit 530 includes a controller 533 and a conversion circuit 534, which performs power conversion in a current source mode to drive the LED module to emit light. The conversion circuit 534 includes a switching circuit (also called a power switch) 535 and an energy storage circuit 536. The conversion circuit 534 is coupled to a first filter output terminal 521 and a second filter output terminal 522, receives the filtered signal, and converts it into a driving signal according to the control of the controller 533, which is then output by the first driving output terminal 531 and the second driving output terminal 532 to drive the LED module. Under the control of the controller 533, the driving signal output by the conversion circuit 534 is a stable current, which enables the LED module to emit light stably.

[0400] bottom pairing Figures 14A to 15B The signal waveforms are used to further illustrate the operation of the drive circuit 530. Among them, Figures 14A to 15B These are schematic diagrams of signal waveforms of the driving circuits in different embodiments of this application. Figure 14A and Figure 14B This illustrates the signal waveforms and control conditions of the drive circuit 530 operating in Continuous-Conduction Mode (CCM). Figure 15A and Figure 15B This diagram illustrates the signal waveforms and control conditions of the drive circuit 530 operating in Discontinuous-Conduction Mode (DCM). In the signal waveform diagram, the horizontal axis 't' represents time, and the vertical axis represents the voltage or current value (depending on the signal type).

[0401] In this embodiment, the controller 533 adjusts the duty cycle of the output lighting control signal Slc based on the received current detection signal Sdet, causing the switching circuit 535 to turn on or off in response to the lighting control signal Slc. The energy storage circuit 536 repeatedly charges and discharges energy according to the on / off state of the switching circuit 535, thereby ensuring that the driving current ILED received by the LED module 50 can be stably maintained at a preset current value Ipred. The lighting control signal Slc has a fixed signal period Tlc and signal amplitude, while the length of the pulse enable period (such as Ton1, Ton2, Ton3, or pulse width) within each signal period Tlc is adjusted according to control requirements. The duty cycle of the lighting control signal Slc is the ratio of the pulse enable period to the signal period Tlc. For example, if the pulse enable period Ton1 is 40% of the signal period Tlc, it means that the duty cycle of the lighting control signal in the first signal period Tlc is 0.4.

[0402] Furthermore, the current detection signal Sdet may be, for example, a signal representing the magnitude of the current flowing through the LED module 50, or a signal representing the magnitude of the current flowing through the switching circuit 535, and this application is not limited thereto.

[0403] Please refer to the following simultaneously: Figure 13A and Figure 14A , Figure 14A The diagram illustrates the signal waveform changes of the drive circuit 530 during multiple signal cycles Tlc when the drive current ILED is less than the preset current value Ipred. Specifically, during the first signal cycle Tlc, the switching circuit 535 is turned on during the pulse enable period Ton1 in response to the high-voltage level lighting control signal Slc. At this time, the conversion circuit 534, in addition to generating the drive current ILED based on the input power received from the first filter output terminal 521 and the second filter output terminal 522 to provide to the LED module 50, also charges the energy storage circuit 536 via the turned-on switch circuit 535, causing the current IL flowing through the energy storage circuit 536 to gradually increase. In other words, during the pulse enable period Ton1, the energy storage circuit 536 stores energy in response to the input power received from the first filter output terminal 521 and the second filter output terminal 522.

[0404] Next, after the pulse enable period Ton1 ends, the switching circuit 535 will turn off in response to the low-voltage level lighting control signal Slc. During the period when the switching circuit 535 is off, the input power on the first filter output terminal 521 and the second filter output terminal 522 will not be supplied to the LED module 50. Instead, the energy storage circuit 536 will discharge to generate a drive current ILED, which will be supplied to the LED module 50. The energy storage circuit 536 will gradually reduce the current IL due to the release of electrical energy. Therefore, even when the lighting control signal Slc is at a low voltage level (i.e., during the disabled period), the drive circuit 530 will still continuously supply power to the LED module 50 based on the release of energy by the energy storage circuit 536. In other words, regardless of whether the switching circuit 535 is on or off, the drive circuit 530 will continuously provide a stable drive current ILED to the LED module 50, and the current value of the drive current ILED during the first signal cycle Tlc is approximately I1.

[0405] During the first signal cycle Tlc, the controller 533 determines that the current value I1 of the drive current ILED is less than the preset current value Ipred based on the current detection signal Sdet. Therefore, when entering the second signal cycle Tlc, the pulse enable period of the lighting control signal Slc is adjusted to Ton2, where the pulse enable period Ton2 is the pulse enable period Ton1 plus the unit period Tu1.

[0406] During the second signal cycle Tlc, the operation of the switching circuit 535 and the energy storage circuit 536 is similar to that of the previous signal cycle Tlc. The main difference is that, since the pulse enable period Ton2 is longer than the pulse enable period Ton1, the energy storage circuit 536 has a longer charging time and a relatively shorter discharging time. This results in the average value of the drive current ILED provided by the drive circuit 530 during the second signal cycle Tlc being increased to a current value I2 that is closer to the preset current value Ipred.

[0407] Similarly, since the current value I2 of the drive current ILED is still less than the preset current value Ipred, in the third signal cycle Tlc, the controller 533 further adjusts the pulse enable period of the lighting control signal Slc to Ton3, where the pulse enable period Ton3 is the pulse enable period Ton2 plus a unit period Tu1, which is equal to the pulse enable period Ton1 plus a period Tu2 (equivalent to two unit periods Tu1). In the third signal cycle Tlc, the operation of the switching circuit 535 and the energy storage circuit 536 is similar to that of the first two signal cycles Tlc. Because the pulse enable period Ton3 is further extended, the current value of the drive current ILED rises to I3, and approximately reaches the preset current value Ipred. Subsequently, since the current value I3 of the drive current ILED has reached the preset current value Ipred, the controller 533 maintains the same duty cycle, so that the drive current ILED can be continuously maintained at the preset current value Ipred.

[0408] Please refer to the following at the same time: Figure 13A and Figure 14B , Figure 14B The diagram illustrates the signal waveform changes of the drive circuit 530 during multiple signal cycles Tlc when the drive current ILED is greater than the preset current value Ipred. Specifically, during the first signal cycle Tlc, the switching circuit 535 is turned on during the pulse enable period Ton1 in response to the high-voltage level lighting control signal Slc. At this time, the conversion circuit 534, in addition to generating the drive current ILED based on the input power received from the first filter output terminal 521 and the second filter output terminal 522 to provide to the LED module 50, also charges the energy storage circuit 536 via the turned-on switch circuit 535, causing the current IL flowing through the energy storage circuit 536 to gradually increase. In other words, during the pulse enable period Ton1, the energy storage circuit 536 stores energy in response to the input power received from the first filter output terminal 521 and the second filter output terminal 522.

[0409] Next, after the pulse enable period Ton1 ends, the switching circuit 535 will turn off in response to the low-voltage level lighting control signal Slc. During the period when the switching circuit 535 is off, the input power on the first filter output terminal 521 and the second filter output terminal 522 will not be supplied to the LED module 50. Instead, the energy storage circuit 536 will discharge to generate a drive current ILED, which will be supplied to the LED module 50. The energy storage circuit 536 will gradually reduce the current IL due to the release of electrical energy. Therefore, even when the lighting control signal Slc is at a low voltage level (i.e., during the disabled period), the drive circuit 530 will still continuously supply power to the LED module 50 based on the energy release of the energy storage circuit 536. In other words, regardless of whether the switching circuit 535 is on or off, the drive circuit 530 will continuously provide a stable drive current ILED to the LED module 50, and the current value of the drive current ILED during the first signal cycle Tlc is approximately I4.

[0410] During the first signal cycle Tlc, the controller 533 determines that the current value I4 of the drive current ILED is greater than the preset current value Ipred based on the current detection signal Sdet. Therefore, when entering the second signal cycle Tlc, the pulse enable period of the lighting control signal Slc is adjusted to Ton2, where the pulse enable period Ton2 is the pulse enable period Ton1 minus the unit period Tu1.

[0411] During the second signal cycle Tlc, the operation of the switching circuit 535 and the energy storage circuit 536 is similar to that of the previous signal cycle Tlc. The main difference is that, since the pulse enable period Ton2 is shorter than the pulse enable period Ton1, the energy storage circuit 536 has a shorter charging time and a relatively longer discharging time. As a result, the average value of the drive current ILED provided by the drive circuit 530 during the second signal cycle Tlc will decrease to a current value I5 that is closer to the preset current value Ipred.

[0412] Similarly, since the current value I5 of the drive current ILED is still greater than the preset current value Ipred, in the third signal cycle Tlc, the controller 533 further adjusts the pulse enable period of the lighting control signal Slc to Ton3, where the pulse enable period Ton3 is the pulse enable period Ton2 minus a unit period Tu1, which is equal to the pulse enable period Ton1 minus a period Tu2 (equivalent to two unit periods Tu1). In the third signal cycle Tlc, the operation of the switching circuit 535 and the energy storage circuit 536 is similar to the previous two signal cycles Tlc. Because the pulse enable period Ton3 is further shortened, the current value of the drive current ILED drops to I6, and approximately reaches the preset current value Ipred. Subsequently, since the current value I6 of the drive current ILED has reached the preset current value Ipred, the controller 533 maintains the same duty cycle, allowing the drive current ILED to be continuously maintained at the preset current value Ipred.

[0413] As can be seen from the above, the driving circuit 530 will adjust the pulse width of the lighting control signal Slc in a stepwise manner so that the driving current ILED is gradually adjusted to approach the preset current value Ipred when it is lower or higher than the preset current value Ipred, thereby achieving constant current output.

[0414] Furthermore, in this embodiment, the driving circuit 530 operates in continuous conduction mode, meaning that the energy storage circuit 536 will not discharge to zero current IL during the off period of the switching circuit 535. By using the driving circuit 530 operating in continuous conduction mode to power the LED module 50, the power supply provided to the LED module 50 can be more stable and less prone to ripple.

[0415] The following describes the control scenario of the drive circuit 530 operating in discontinuous conduction mode. Please refer to [link to previous text]. Figure 13A and Figure 15A ,in, Figure 15A The signal waveform and the operation of the 530 drive circuit are roughly the same as... Figure 14A same. Figure 15A and Figure 14A The main difference is that, because the drive circuit 530 in this embodiment operates in discontinuous conduction mode, the energy storage circuit 536 will discharge until the current IL equals zero during the pulse disable period of the lighting control signal Slc, and then recharge at the beginning of the next signal cycle Tlc. Other operational descriptions can be found above. Figure 14A Examples are not described in detail here.

[0416] Please refer to the following: Figure 13A and Figure 15B ,in, Figure 15B The signal waveform and the operation of the 530 drive circuit are roughly the same as... Figure 14B same. Figure 15B and Figure 14B The main difference is that, because the drive circuit 530 in this embodiment operates in discontinuous conduction mode, the energy storage circuit 536 will discharge until the current IL equals zero during the pulse disable period of the lighting control signal Slc, and then recharge at the beginning of the next signal cycle Tlc. Other operational descriptions can be found above. Figure 14B Examples are not described in detail here.

[0417] By powering the LED module 50 with the drive circuit 530 operating in discontinuous conduction mode, the power loss of the drive circuit 530 can be reduced, thereby achieving higher conversion efficiency.

[0418] Incidentally, although the driving circuit 530 is exemplified as a single-stage DC-DC converter, this application is not limited thereto. For example, the driving circuit 530 can also be a two-stage driving circuit composed of an active power factor correction circuit and a DC-DC converter. In other words, any power conversion circuit architecture that can be used for driving LED light sources can be applied here.

[0419] Furthermore, the above-mentioned description of power conversion operation is not limited to LED straight tube lamps that drive AC input, but can be applied to various types of AC-powered LED lamps (i.e., ballastless LED lamps), such as LED bulbs, LED filament lamps or integrated LED lamps, and this application is not limited thereto.

[0420] Please see Figure 13B , Figure 13B This is a schematic diagram of the circuit architecture of the driving circuit according to the first embodiment of this application. In this embodiment, the driving circuit 630 is a step-down DC-DC converter circuit, including a controller 633 and a conversion circuit. The conversion circuit includes an inductor 636, a freewheeling diode 634, a capacitor 637, and a switching switch 635. The driving circuit 630 is coupled to a first filter output terminal 521 and a second filter output terminal 522 to convert the received filtered signal into a driving signal to drive the LED module coupled between the first driving output terminal 531 and the second driving output terminal 532.

[0421] In this embodiment, the switch 635 is a metal-oxide-semiconductor field-effect transistor (MOSFET) with a control terminal, a first terminal, and a second terminal. The first terminal of the switch 635 is coupled to the anode of the freewheeling diode 634, and the second terminal is coupled to the second filter output terminal 522. The control terminal is coupled to the controller 633 to receive control from the controller 633 to enable or disable the first and second terminals. The first drive output terminal 531 is coupled to the first filter output terminal 521, and the second drive output terminal 532 is coupled to one end of the inductor 636, while the other end of the inductor 636 is coupled to the first terminal of the switch 635. The capacitor 637 is coupled between the first drive output terminal 531 and the second drive output terminal 532 to stabilize the voltage difference between them. The negative terminal of the freewheeling diode 634 is coupled to the first drive output terminal 531.

[0422] The operation of the drive circuit 630 will be explained next.

[0423] The controller 633 determines the on and off times of the switch 635 based on the current detection signals S535 and / or S531, that is, controls the duty cycle of the switch 635 to adjust the magnitude of the drive signal. The current detection signal S535 represents the magnitude of the current flowing through the switch 635. The current detection signal S531 represents the magnitude of the current flowing through the LED module coupled between the first drive output terminal 531 and the second drive output terminal 532. Based on either the current detection signals S531 or S535, the controller 633 can obtain information about the magnitude of the power converted by the switching circuit. When the switch 635 is on, the current of the filtered signal flows in from the first filter output terminal 521, passes through the capacitor 637 and the first drive output terminal 531 to the LED module, inductor 636, and switch 635, and then flows out from the second filter output terminal 522. At this time, the capacitor 637 and inductor 636 store energy. When the toggle switch 635 is off, the inductor 636 and capacitor 637 release their stored energy, and the current flows through the freewheeling diode 634 to the first drive output terminal 531, allowing the LED module to continue emitting light. It is worth noting that capacitor 637 is not an essential component and can be omitted; therefore, it is shown as a dashed line in the diagram. In some applications, the characteristic of an inductor to resist changes in current can be used to stabilize the LED module current, thus omitting capacitor 637.

[0424] From another perspective, the driving circuit 630 keeps the current flowing through the LED module constant. Therefore, for some LED modules (e.g., white, red, blue, green LED modules), the situation where the color temperature changes with the current magnitude can be improved. That is, the LED module can maintain a constant color temperature under different brightness levels. The inductor 636, which acts as an energy storage circuit, releases the stored energy when the switching switch 635 is off. On the one hand, this keeps the LED module continuously emitting light, and on the other hand, it prevents the current and voltage on the LED module from suddenly dropping to the minimum value. When the switching switch 635 is turned on again, the current and voltage do not need to go back and forth from the minimum value to the maximum value. In this way, the intermittent light emission of the LED module is avoided, thereby increasing the overall brightness of the LED module, reducing the minimum conduction cycle, and increasing the driving frequency.

[0425] Please see Figure 13C , Figure 13C This is a schematic diagram of the circuit architecture of the driving circuit according to the second embodiment of this application. In this embodiment, the driving circuit 730 is a boost DC-DC converter circuit, including a controller 733 and a conversion circuit. The conversion circuit includes an inductor 736, a freewheeling diode 734, a capacitor 737, and a switching switch 735. The driving circuit 730 converts the filtered signal received from the first filter output terminal 521 and the second filter output terminal 522 into a driving signal to drive the LED module coupled between the first driving output terminal 531 and the second driving output terminal 532.

[0426] One end of inductor 736 is coupled to the first filter output terminal 521, and the other end is coupled to the anode of filter diode 734 and the first terminal of switch 735. The second terminal of switch 735 is coupled to the second filter output terminal 522 and the second drive output terminal 532. The cathode of freewheeling diode 734 is coupled to the first drive output terminal 531. Capacitor 737 is coupled between the first drive output terminal 531 and the second drive output terminal 532.

[0427] The controller 733 is coupled to the control terminal of the switch 735 and controls the switching on and off of the switch 735 based on the current detection signal S531 and / or the current detection signal S535. When the switch 735 is on, current flows in from the first filter output terminal 521, through the inductor 736 and the switch 735, and then out from the second filter output terminal 522. At this time, the current flowing through the inductor 736 increases over time, and the inductor 736 is in an energy storage state. Simultaneously, the capacitor 737 is in a releasing state to continuously drive the LED module to emit light. When the switch 735 is off, the inductor 736 is in a releasing state, and the current in the inductor 736 decreases over time. The current in the inductor 736 flows through the freewheeling diode 734 to the capacitor 737 and the LED module. At this time, the capacitor 737 is in an energy storage state.

[0428] It is worth noting that capacitor 737 is an optional component, indicated by a dashed line. When capacitor 737 is omitted, when switch 735 is on, the current in inductor 736 does not flow through the LED module, causing the LED module to not emit light; when switch 735 is off, the current in inductor 736 flows through freewheeling diode 734 through the LED module, causing the LED module to emit light. By controlling the LED module's illumination time and the magnitude of the current flowing through it, the average brightness of the LED module can be stabilized at a set value, achieving the same stable light emission effect.

[0429] To detect the current flowing through the switch 735, a sensing resistor (not shown) is configured between the switch 735 and the second filter output terminal 522. When the switch 735 is turned on, the current flowing through the sensing resistor creates a voltage difference across the resistor. Therefore, the voltage across the sensing resistor serves as the current detection signal S535, which is fed back to the controller 733 for control purposes. However, during the instant the LED tube light is powered on or when struck by lightning, a large current (potentially exceeding 10A) can easily be generated in the circuit of the switch 735, potentially damaging the sensing resistor and the controller 733. Therefore, in some embodiments, the drive circuit 730 may further include a clamping component connected to the sensing resistor. This component clamps the circuit of the sensing resistor when the current flowing through it or the voltage difference across the sensing resistor exceeds a preset value, thereby limiting the current flowing through the sensing resistor. In some embodiments, the clamping component may be, for example, a plurality of diodes connected in series to form a diode string, which is connected in parallel with the sensing resistor. In this configuration, when a large current is generated in the circuit of the changeover switch 735, the diode string connected in parallel with the sensing resistor will quickly conduct, thus limiting the voltage across the sensing resistor to a specific level. For example, if the diode string consists of 5 diodes, since the forward voltage of a single diode is approximately 0.7V, the diode string can clamp the voltage across the sensing resistor to around 3.5V.

[0430] From another perspective, the driver circuit 730 keeps the current flowing through the LED module constant. Therefore, for some LED modules (e.g., white, red, blue, green LED modules), the situation where the color temperature changes with the current magnitude can be improved. In other words, the LED module can maintain a constant color temperature under different brightness levels. The inductor 736, which acts as an energy storage circuit, releases the stored energy when the switch 735 is off. This allows the LED module to continue emitting light and prevents the current and voltage on the LED module from suddenly dropping to their minimum values. When the switch 735 is turned on again, the current and voltage do not need to go from the minimum value to the maximum value. This avoids intermittent light emission from the LED module, thereby increasing the overall brightness of the LED module, reducing the minimum on-cycle, and increasing the driving frequency.

[0431] Please see Figure 13D , Figure 13D This is a schematic diagram of the circuit architecture of the driving circuit according to the third embodiment of this application. In this embodiment, the driving circuit 830 is a step-down DC-DC converter circuit, including a controller 833 and a conversion circuit. The conversion circuit includes an inductor 836, a freewheeling diode 834, a capacitor 837, and a switching switch 835. The driving circuit 830 is coupled to the first filter output terminal 521 and the second filter output terminal 522 to convert the received filtered signal into a driving signal to drive the LED module coupled between the first driving output terminal 531 and the second driving output terminal 532.

[0432] The first terminal of the switch 835 is coupled to the first filter output terminal 521, and the second terminal is coupled to the cathode of the freewheeling diode 834. The control terminal is coupled to the controller 833 to receive the lighting control signal from the controller 833, thus controlling the state between the first and second terminals to be either on or off. The anode of the freewheeling diode 834 is coupled to the second filter output terminal 522. One end of the inductor 836 is coupled to the second terminal of the switch 835, and the other end is coupled to the first drive output terminal 531. The second drive output terminal 532 is coupled to the anode of the freewheeling diode 834. A capacitor 837 is coupled between the first drive output terminal 531 and the second drive output terminal 532 to stabilize the voltage between them.

[0433] The controller 833 controls the switching on and off of the changeover switch 835 based on the current detection signal S531 and / or the current detection signal S535. When the changeover switch 835 is on, current flows in from the first filter output terminal 521, passes through the changeover switch 835, inductor 836, capacitor 837, first drive output terminal 531, LED module, and second drive output terminal 532, and then flows out from the second filter output terminal 522. At this time, the current flowing through the inductor 836 and the voltage of the capacitor 837 increase over time, and the inductor 836 and capacitor 837 are in an energy storage state. When the changeover switch 835 is off, the inductor 836 is in an energy release state, and the current in the inductor 836 decreases over time. At this time, the current in the inductor 836 returns to the inductor 836 through the first drive output terminal 531, LED module, second drive output terminal 532, and freewheeling diode 834 to form a freewheeling current.

[0434] It is worth noting that capacitor 837 is an optional component, indicated by a dashed line in the diagram. When capacitor 837 is omitted, regardless of whether switch 835 is on or off, the current in inductor 836 can flow through the first drive output terminal 531 and the second drive output terminal 532 to drive the LED module to continuously emit light.

[0435] From another perspective, the driving circuit 830 keeps the current flowing through the LED module constant. Therefore, for some LED modules (e.g., white, red, blue, green LED modules), the situation where the color temperature changes with the current is improved. In other words, the LED module can maintain a constant color temperature under different brightness levels. The inductor 836, which acts as an energy storage circuit, releases the stored energy when the switching switch 835 is off. This keeps the LED module continuously emitting light and prevents the current and voltage on the LED module from suddenly dropping to their minimum values. When the switching switch 835 is turned on again, the current and voltage do not need to go back and forth from the minimum value to the maximum value. This avoids intermittent light emission from the LED module, improves the overall brightness of the LED module, reduces the minimum on-cycle, and increases the driving frequency.

[0436] Please see Figure 13E , Figure 13E This is a schematic diagram of the circuit architecture of the driving circuit according to the fourth embodiment of this application. In this embodiment, the driving circuit 930 is a step-down DC-DC converter circuit, including a controller 933 and a conversion circuit. The conversion circuit includes an inductor 936, a freewheeling diode 934, a capacitor 937, and a switching switch 935. The driving circuit 930 is coupled to the first filter output terminal 521 and the second filter output terminal 522 to convert the received filtered signal into a driving signal to drive the LED module coupled between the first driving output terminal 531 and the second driving output terminal 532.

[0437] One end of inductor 936 is coupled to the first filter output terminal 521 and the second drive output terminal 532, and the other end is coupled to the first terminal of switch 935. The second terminal of switch 935 is coupled to the second filter output terminal 522, and the control terminal of switch 935 is coupled to controller 933 to be turned on or off according to the lighting control signal of controller 933. The anode of freewheeling diode 934 is coupled to the connection point of inductor 936 and switch 935, and the cathode is coupled to the second drive output terminal 532. Capacitor 937 is coupled to the first drive output terminal 531 and the second drive output terminal 532 to stably drive the LED module between the first drive output terminal 531 and the second drive output terminal 532.

[0438] The controller 933 controls the switching on and off of the changeover switch 935 based on the current detection signal S531 and / or the current detection signal S535. When the changeover switch 935 is on, current flows in from the first filter output terminal 521, through the inductor 936 and the changeover switch 935, and then out from the second filter output terminal 522. At this time, the current flowing through the inductor 936 increases over time, and the inductor 936 is in an energy storage state; the voltage of the capacitor 937 decreases over time, and the capacitor 937 is in a release state to maintain the LED module's illumination. When the changeover switch 935 is off, the inductor 936 is in a release state, and the current in the inductor 936 decreases over time. At this time, the current in the inductor 936 returns to the inductor 936 through the freewheeling diode 934, the first drive output terminal 531, the LED module, and the second drive output terminal 532 to form a freewheeling current. At this time, the capacitor 937 is in an energy storage state, and the voltage of the capacitor 937 increases over time.

[0439] It is worth noting that capacitor 937 is an optional component, indicated by a dashed line in the diagram. When capacitor 937 is omitted, and switch 935 is on, the current in inductor 936 does not flow through the first drive output terminal 531 and the second drive output terminal 532, thus preventing the LED module from emitting light. When switch 935 is off, the current in inductor 936 flows through freewheeling diode 934 and then through the LED module, causing the LED module to emit light. By controlling the LED module's illumination time and the magnitude of the current flowing through it, the average brightness of the LED module can be stabilized at a set value, achieving the same stable light emission effect.

[0440] From another perspective, the driver circuit 930 keeps the current flowing through the LED module constant. Therefore, for some LED modules (e.g., white, red, blue, green LED modules), the situation where the color temperature changes with the current is improved. In other words, the LED module can maintain a constant color temperature under different brightness levels. The inductor 936, which acts as an energy storage circuit, releases the stored energy when the switch 935 is off. This allows the LED module to continue emitting light and prevents the current and voltage on the LED module from suddenly dropping to their minimum values. When the switch 935 is turned on again, the current and voltage do not need to go from the minimum value to the maximum value. This avoids intermittent light emission from the LED module, improves the overall brightness of the LED module, reduces the minimum on-cycle, and increases the driving frequency.

[0441] refer to Figure 13F This is a schematic diagram of the circuit architecture of a drive circuit according to another embodiment of this application. In this embodiment, the drive circuit 1030 is a boost DC-DC converter circuit, including a controller 1033 and a conversion circuit. The circuit architecture of the drive circuit 1030 in this embodiment is similar to... Figure 13CSimilar to the previous embodiment, except that in this embodiment, the conversion circuit further includes capacitors 1031 and 1038, and diodes 1032 and 1039. The driving circuit 1030 is coupled to the first filter output terminal 521 and the second filter output terminal 522 to convert the filtered signal into a driving signal to drive the LED module coupled between the first driving output terminal 531 and the second driving output terminal 532.

[0442] In some embodiments, capacitors 1031 and 1038, and diodes 1032 and 1039 can be collectively referred to as a secondary boost circuit to achieve a second-stage boost conversion and obtain a higher drive output voltage. (Comparison) Figure 13C In the aforementioned embodiment, when the output voltage is U0, the drive output voltage of this embodiment is approximately 2U0.

[0443] The first pin of inductor 1036 is electrically connected to the first filter output terminal 521, and its second pin is electrically connected to the anode of diode 1034 and the second pin of switch 1035. The third pin of switch 1035 is electrically connected to the second filter output terminal, and its first pin is electrically connected to controller 1033. The cathode of diode 1034 is electrically connected to the anode of diode 1032 and the first pin of capacitor 1037. The second pin of capacitor 1037 is electrically connected to the second filter output terminal. The first pin of capacitor 1031 is electrically connected to the anode of diode 1034, and its second pin is electrically connected to the cathode of diode 1032. The anode of diode 1039 is electrically connected to the cathode of diode 1032, and its cathode is electrically connected to the first drive output terminal 531. The second drive output terminal 532 is electrically connected to the second filter output terminal 522. The first pin of capacitor 1038 is electrically connected to the first drive output terminal 531, and its second pin is electrically connected to the second drive output terminal 532.

[0444] The controller 1033 is coupled to the control terminal of the switch 1035 and controls the switching on and off of the switch based on the current detection signal S535 and / or the current detection signal S531. When the switch 1035 is on, current flows in from the first filter output terminal 521, through the inductor 1036 and the switch 1035, and then out from the second filter output terminal 522. At this time, the current flowing through the inductor 1036 increases over time, and the inductor 1036 is in an energy storage state. When the switch 1035 is off, the inductor 1036 is in an energy release state, and the current in the inductor 1036 decreases over time. The current in the inductor 1036 flows through the diode 1034 to the capacitor 1037. At this time, the capacitor 1037 is in an energy storage state. From another perspective, when the flower-cutting switch 1035 is closed, the inductor 1036 stores energy; when the switch 1035 is closed, the inductor 1036 releases energy, and a voltage UL is formed across the inductor 1036. Let the voltage of the filtered signal be UI, then the voltage at U0 satisfies the following relationship:

[0445] U0 = UI + UL – UD

[0446] In the above equation, UD represents the voltage drop across diode 1034. Because this voltage drop is small, it is generally negligible. Therefore:

[0447] U0≈UI+UL>UI

[0448] When the switch 1035 is turned on again, the inductor 1036 stores energy again. Simultaneously, capacitor 1037 charges capacitor 1031 through the path formed by diode 1032, capacitor 1031, and switch 1035. The voltage across capacitor 1031 gradually increases, while the voltage across capacitor 1037 gradually decreases, until the voltages of capacitors 1031 and 1037 gradually converge. When the switch 1035 is turned off again, the inductor 1036 releases energy. Simultaneously, capacitors 1037 and 1031 charge capacitor 1038 through the path formed by diode 1039 and capacitor 1038. The voltage U2 formed across capacitor 1038 is the voltage at the drive output terminal. Voltage U2 satisfies the following relationship:

[0449] U2=U0+UC–UD

[0450] In the above equation, UC is the voltage across capacitor 1031, and UD is the voltage drop across diode 1039. Since UD is small, it can be ignored. U2 is the voltage at the drive output terminal. Therefore:

[0451] U2≈U0+UC≈2*U0

[0452] The controller 1033 controls the switching switch 1035 to turn on and off based on the current detection signal S535 and / or the current detection signal S531, so as to change the voltage and / or current at the drive output terminal.

[0453] In some embodiments, the signal at the output of the drive circuit 1030 is a constant voltage or constant current signal, but this application is not limited thereto.

[0454] In some embodiments, the detection signals S531 and S535 may also be voltage detection signals, but this application is not limited thereto.

[0455] The technical solution of this embodiment, compared to Figure 13C The described embodiment can achieve higher output voltage to meet the needs of different application scenarios.

[0456] In the above embodiments, the switching switch 1035 is a field-effect transistor. In other embodiments, other types of switches may be used, and this application is not limited thereto.

[0457] For example, the capacitor in the drive circuit (e.g.: Figures 13B to 13E In practical applications, capacitors 637, 737, 837, and 937 can be composed of two or more capacitors connected in parallel.

[0458] In one embodiment, the components with higher temperatures in the driving circuit are located on one side of the lamp tube (referred to as the first side of the lamp tube), and the remaining components are located on the other side of the lamp tube (referred to as the second side of the lamp tube). In a multi-lamp lamp system, the lamp tubes are connected to the lamp holder in an alternating arrangement, meaning that the first side of any lamp tube is adjacent to the second side of other adjacent lamp tubes. This configuration allows the components with higher temperatures to be evenly distributed throughout the lamp system, thereby preventing heat from concentrating in specific locations within the lamp and affecting the overall luminous efficiency of the LEDs.

[0459] The conversion efficiency of the driving circuit in this application is 80% or higher, preferably 90% or higher, and more preferably 92% or higher. Therefore, without the driving circuit, the luminous efficacy of the LED lamp in this application is preferably 120 lm / W or higher, and more preferably 160 lm / W or higher; while with the driving circuit and LED assembly included, the luminous efficacy is preferably 120 lm / W * 90% = 108 lm / W or higher, and more preferably 160 lm / W * 92% = 147.2 lm / W or higher.

[0460] In addition, considering that the light transmittance of the diffusion layer of the LED tube lamp is above 85%, the luminous efficacy of the LED tube lamp of this application is preferably 108 lm / W * 85% = 91.8 lm / W or above, and more preferably 147.2 lm / W * 85% = 125.12 lm / W.

[0461] The following combination Figures 16A to 16Y The power supply device including the auxiliary power supply module is described below. Figures 16A to 16Y In the power supply device mentioned, the components, circuits or modules can be reclassified. For example, the circuit part used to output drive signals based on external drive signals, excluding the auxiliary power supply module part, can be referred to as the main power supply device as a whole. This will not be repeated in some embodiments below.

[0462] Please see Figure 16A , Figure 16A This is a circuit block diagram of the power module according to the sixth embodiment of this application. Compared to Figure 9A In the illustrated embodiment, the power supply module 5 includes a first rectifier circuit 510, a filter circuit 520, and a driver circuit 530, and further includes an auxiliary power supply module 560. The power supply module 5 may also include some components of the LED module 50. The auxiliary power supply module 560 is coupled between the first filter output terminal 521 and the second filter output terminal 522. The auxiliary power supply module 560 detects the filtered signals on the first filter output terminal 521 and the second filter output terminal 522, and determines whether to provide auxiliary power to the first filter output terminal 521 and the second filter output terminal 522 based on the detection result. When the filtered signal stops being provided or the AC level is insufficient, i.e., when the driving voltage of the LED module 50 is lower than an auxiliary voltage, the auxiliary power supply module 560 provides auxiliary power so that the LED module 50 can continue to emit light. The auxiliary voltage is determined according to the auxiliary power supply voltage provided by the auxiliary power supply module 560. Please refer to [link to relevant documentation]. Figure 16B , Figure 16B This is a circuit block diagram of the power module according to the seventh embodiment of this application. Compared to Figure 9A In the illustrated embodiment, the power supply module 5 includes a first rectifier circuit 510, a filter circuit 520, a driver circuit 530, and an auxiliary power supply module 560. The auxiliary power supply module 560 is coupled between the first driver output terminal 531 and the second driver output terminal 532. The auxiliary power supply module 560 detects the drive signals of the first driver output terminal 531 and the second driver output terminal 532, and determines whether to provide auxiliary power to the first driver output terminal 531 and the second driver output terminal 532 based on the detection result. When the drive signal stops being provided or the AC level is insufficient, the auxiliary power supply module 560 provides auxiliary power, enabling the LED module 50 to continuously emit light.

[0463] Among them, Figure 16A and Figure 16BIn the illustrated embodiment, the first rectifier circuit 510, filter circuit 520, and drive circuit 530 can be collectively referred to as the main power supply device. When the main power supply device fails to supply power to the LED module, an auxiliary power supply module provides auxiliary power. In another embodiment, when the main power supply device is functioning normally, the auxiliary power supply module can be used as a load charged by the main power supply device to store power. In this embodiment, the auxiliary power supply module is located after the main power supply device, for example, in parallel with the LED module. Thus, when the main power supply device is functioning normally, the main power supply device first performs a step-down conversion on the external drive signal with a higher voltage value, and then supplies power to the LED module and charges the auxiliary power supply module. The auxiliary power supply module uses a relatively lower voltage signal to charge and store power for use when the main power supply device fails to supply power, thereby greatly reducing the voltage withstand requirements of the electronic components required for the auxiliary power supply module, further reducing costs and ensuring stable circuit operation. It should also be noted that the LED module can be replaced with other loads, and the main power supply device can also perform other types of conversion on the external drive signal, such as step-up conversion; this application does not impose any restrictions on this.

[0464] In some embodiments, the auxiliary power provided by the auxiliary power supply module 560 may be referred to as the auxiliary power supply signal.

[0465] Please see Figure 16C , Figure 16C This is a schematic diagram of the circuit architecture of an auxiliary power supply module according to an embodiment of this application. The auxiliary power supply module 660 of this embodiment can be applied to the configuration of the auxiliary power supply module 560 described above. The auxiliary power supply module 660 includes an energy storage unit 663 and a voltage detection circuit 664. The auxiliary power supply module 660 has an auxiliary power positive terminal 661 and an auxiliary power negative terminal 662 to be coupled to a first filter output terminal 521 and a second filter output terminal 522, respectively, or to a first drive output terminal 531 and a second drive output terminal 532, respectively. The voltage detection circuit 664 detects the level of the signal on the auxiliary power positive terminal 661 and the auxiliary power negative terminal 662 to determine whether to release the power of the energy storage unit 663 to the outside through the auxiliary power positive terminal 661 and the auxiliary power negative terminal 662.

[0466] In this embodiment, the energy storage unit 663 is a battery or a supercapacitor. The voltage detection circuit 664 further charges the energy storage unit 663 using the signals from the positive terminal 661 and the negative terminal 662 of the auxiliary power supply when the signal levels are higher than the voltage of the energy storage unit 663. When the signal levels from the positive terminal 661 and the negative terminal 662 of the auxiliary power supply are lower than the voltage of the energy storage unit 663, the energy storage unit 663 discharges to the outside via the positive terminal 661 and the negative terminal 662 of the auxiliary power supply.

[0467] The voltage detection circuit 664 includes a diode 665, a bipolar junction transistor 666, and a resistor 667. The anode of the diode 665 is coupled to the positive terminal of the energy storage unit 663, and the cathode is coupled to the positive terminal 661 of the auxiliary power supply. The cathode of the energy storage unit 663 is coupled to the negative terminal 662 of the auxiliary power supply. The collector of the bipolar junction transistor 666 is coupled to the positive terminal 661 of the auxiliary power supply, and the emitter is coupled to the positive terminal of the energy storage unit 663. One end of the resistor 667 is coupled to the positive terminal 661 of the auxiliary power supply, and the other end is coupled to the base of the bipolar junction transistor 666. The resistor 667 turns on the bipolar junction transistor 666 when the collector of the bipolar junction transistor 666 is higher than the emitter by a turn-on voltage. When the power supply to the LED tube lamp is normal, the filtered signal charges the energy storage unit 663 through the first filter output terminal 521, the second filter output terminal 522, and the activated bipolar junction transistor 666; or the drive signal charges the energy storage unit 663 through the first drive output terminal 531, the second drive output terminal 532, and the activated bipolar junction transistor 666, until the collector-shoot difference of the bipolar junction transistor 666 is equal to or less than the on-state voltage. When the filtered signal or drive signal stops being provided or the level suddenly drops, the energy storage unit 663 provides power to the LED module 50 through the diode 665 to maintain light emission.

[0468] It is worth noting that the highest voltage stored by the energy storage unit 663 during charging will be at least lower than the voltage applied to the positive terminal 661 and negative terminal 662 of the auxiliary power supply, which is the turn-on voltage of a bipolar junction transistor 666. When the energy storage unit 663 discharges, the voltage output from the positive terminal 661 and negative terminal 662 of the auxiliary power supply is lower than the voltage of the energy storage unit 663, which is the threshold voltage of a diode 665. Therefore, when the auxiliary power supply module starts supplying power, the voltage provided will be low (approximately equal to the sum of the threshold voltage of diode 665 and the turn-on voltage of bipolar junction transistor 666). Figure 14B In the illustrated embodiment, a voltage drop when the auxiliary power supply module supplies power will cause a significant decrease in the brightness of the LED module 50. Thus, when the auxiliary power supply module is used in an emergency lighting system or a constant-light lighting system, the user can be aware of any abnormalities in the main lighting power supply, such as AC mains power, and can take necessary preventative measures.

[0469] Figures 16A to 16C ,and Figures 16R to 16YThe configuration of this embodiment can be applied not only to emergency power supplies for single-tube lamps but also to luminaire architectures with multiple tubes. Taking a luminaire with four parallel LED tubes as an example, in one exemplary embodiment, one of the four LED tubes may include an auxiliary power supply module. When an external drive signal malfunctions, the LED tube containing the auxiliary power supply module will remain lit, while the other LED tubes will turn off. Considering the uniformity of illumination, the LED tube with the auxiliary power supply module can be positioned in the center of the luminaire.

[0470] In another exemplary embodiment, the four LED tube lights may include multiple LED tube lights with auxiliary power supply modules. When the external drive signal is abnormal, all LED tube lights with auxiliary power supply modules can be simultaneously illuminated by auxiliary power. In this way, even in emergency situations, the entire lighting fixture can still provide a certain level of brightness. Considering the uniformity of illumination, taking the example of setting two LED tube lights with auxiliary power supply modules, these two LED tube lights can be arranged alternately with LED tube lights without auxiliary power supply modules.

[0471] In another exemplary embodiment, the four LED tube lights may include multiple LED tube lights that incorporate auxiliary power supply modules. When an external drive signal malfunctions, some of the LED tube lights will be illuminated by the auxiliary power first, and after a period of time (e.g., a certain period of time), the other LED tube lights will then be illuminated by the auxiliary power. In this way, this embodiment can extend the illumination time of the LED tube lights in emergency situations by coordinating the sequence of auxiliary power supply with other lamps.

[0472] The embodiment of coordinating the supply of auxiliary power with other lamps can be achieved by setting the start time of the auxiliary power supply modules in different lamps, or by setting a controller in each lamp to communicate the operating status between the auxiliary power supply modules. This application does not limit this to any particular method.

[0473] Please see Figure 16D , Figure 16D This is a circuit block diagram of the power supply module according to the eighth embodiment of this application. The power supply module 5 of this embodiment includes a rectifier circuit 510, a filter circuit 520, a drive circuit 530, and an auxiliary power supply module 760. Compared to... Figure 16B In the embodiment shown, the auxiliary power supply module 760 is connected between the first pin 501 and the second pin 502 to receive external drive signals and perform charging and discharging operations based on the external drive signals.

[0474] Specifically, in one embodiment, the auxiliary power supply module 760 operates similarly to an offline uninterruptible power supply (UPS). When power is normal, the external power grid / external drive signal directly supplies power to the rectifier circuit 510 and simultaneously charges the auxiliary power supply module 760. If the mains power quality is unstable or there is a power outage, the auxiliary power supply module 760 disconnects the loop between the external power grid and the rectifier circuit 510, and supplies power to the rectifier circuit 510 from the auxiliary power supply module 760 until the mains power supply returns to normal. In other words, the auxiliary power supply module 760 in this embodiment can operate, for example, in a backup mode, only intervening to supply power when the mains power fails. Here, the power supplied by the auxiliary power supply module 760 can be AC ​​or DC.

[0475] In one exemplary embodiment, the auxiliary power supply module 760 includes, for example, an energy storage unit and a voltage detection circuit. The voltage detection circuit detects an external drive signal and determines, based on the detection result, whether to allow the energy storage unit to provide auxiliary power to the input of the rectifier circuit 510. When the external drive signal stops being provided or the AC level is insufficient, the energy storage unit of the auxiliary power supply module 760 provides auxiliary power, enabling the LED module 50 to continue emitting light based on the auxiliary power provided by the auxiliary energy storage unit. In practical applications, the energy storage unit used to provide auxiliary power can be implemented using energy storage components such as batteries or supercapacitors, but this application is not limited thereto.

[0476] In another exemplary embodiment, such as Figure 16E As shown, Figure 16EThis is a circuit block diagram of the auxiliary power supply module according to the first embodiment of this application. The auxiliary power supply module 760 includes, for example, a charging unit 761 and an auxiliary power supply unit 762. The input terminal of the charging unit 761 is connected to the external power grid 508, and the output terminal of the charging unit 761 is connected to the input terminal of the auxiliary power supply unit 762. The output terminal of the auxiliary power supply unit 762 is connected to the power supply loop between the external power grid 508 and the rectifier circuit 510. The system further includes a switching unit 763, which is connected to the output terminals of the external power grid 508, the auxiliary power supply unit 762, and the rectifier circuit 510, respectively. The switching unit 763 selectively conducts either the loop between the external power grid 508 and the rectifier circuit 510, or the loop between the auxiliary power supply module 760 and the rectifier circuit 510, depending on the power supply status of the external power grid 508. Specifically, when the external power grid 508 is supplying power normally, the power supplied by the external power grid 508 is provided as an external drive signal Sed to the input terminal of the rectifier circuit 510 through the switching unit 763. At this time, the charging unit 761 charges the auxiliary power supply unit 762 based on the power supplied by the external power grid 508, and the auxiliary power supply unit 762 responds to the external drive signal Sed normally transmitted on the power supply circuit without discharging to the downstream rectifier circuit 510. When the power supply of the external power grid 508 is abnormal or fails, the auxiliary power supply unit 762 begins to discharge through the switching unit 763 to provide auxiliary power as the external drive signal Sed to the rectifier circuit 510.

[0477] Please refer to Figure 16F , Figure 16F This is a circuit block diagram of the power supply module according to the ninth embodiment of this application. The power supply module 5 of this embodiment includes a rectifier circuit 510, a filter circuit 520, a drive circuit 530, and an auxiliary power supply module 860. Compared to... Figure 16D In the illustrated embodiment, the input terminals Pi1 and Pi2 of the auxiliary power supply module 860 receive external driving signals and perform charging and discharging operations based on these signals. The generated auxiliary power is then supplied from the output terminals Po1 and Po2 to the downstream rectifier circuit 510. From the perspective of the LED tube lamp structure, the first pin (e.g., 501) and the second pin (e.g., 502) of the LED tube lamp can be either the input terminals Pi1 and Pi2 or the output terminals Po1 and Po2 of the auxiliary power supply module 860. If the first pin 501 and the second pin 502 are the input terminals Pi1 and Pi2 of the auxiliary power supply module 860, it indicates that the auxiliary power supply module 860 is located inside the LED tube lamp; if the first pin 501 and the second pin 502 are the output terminals Po1 and Po2 of the auxiliary power supply module 860, it indicates that the auxiliary power supply module 860 is located outside the LED tube lamp. Subsequent embodiments will further explain the specific structural configuration of the auxiliary power supply module.

[0478] In one embodiment, the auxiliary power supply module 860 operates similarly to an online uninterruptible power supply (UPS). The external power grid / external drive signal does not directly power the rectifier circuit 510; instead, it powers the circuit through the auxiliary power supply module 860. In other words, in this embodiment, the external power grid is isolated from the LED tube light, and the auxiliary power supply module 860 is involved throughout the LED tube light's startup / power consumption process, thus ensuring that the power supplied to the rectifier circuit 510 is not affected by instability in the external power grid.

[0479] Figure 16G This is a circuit block diagram of the auxiliary power supply module according to the second embodiment of this application, illustrating an example configuration of the online-operated auxiliary power supply module 860. For example... Figure 16G As shown, the auxiliary power supply module 860 includes a charging unit 861 and an auxiliary power supply unit 862. The input terminal of the charging unit 861 is connected to the external power grid 508, and the output terminal of the charging unit 861 is connected to the first input terminal of the auxiliary power supply unit 862. The second input terminal of the auxiliary power supply unit 862 is connected to the external power grid 508, and its output terminal is connected to the rectifier circuit 510. Specifically, when the external power grid 508 is supplying power normally, the auxiliary power supply unit 862 performs power conversion based on the power provided by the external power grid 508 and generates an external drive signal Sed to the downstream rectifier circuit 510 accordingly; during this period, the charging unit 861 simultaneously charges the energy storage unit in the auxiliary power supply unit 862. When the external power grid 508 experiences an abnormality or power outage, the auxiliary power supply unit 862 performs power conversion based on the power provided by its own energy storage unit and generates an external drive signal Sed to the downstream rectifier circuit 510 accordingly. It should be noted that the power conversion action described herein may be one of the operations of rectification, filtering, boost and buck circuits or a reasonable combination thereof, and this application is not limited thereto.

[0480] In another embodiment, the auxiliary power supply module 860 operates similarly to a line-interactive UPS. Its basic operation is similar to that of an offline UPS, but the difference is that under the line-interactive operation, the auxiliary power supply module 860 monitors the power supply status of the external power grid at all times, and it has its own boost and reduce voltage compensation circuits to correct the situation in real time when the power supply status of the external power grid is not ideal, thereby reducing the frequency of switching to battery power supply.

[0481] Figure 16H This is a circuit block diagram of the auxiliary power supply module according to the third embodiment of this application, illustrating an example configuration of the online interactive auxiliary power supply module 860. For example... Figure 16HAs shown, the auxiliary power supply module 860 includes, for example, a charging unit 861, an auxiliary power supply unit 862, and a switching unit 863. The input terminal of the charging unit 861 is connected to the external power grid 508, and the output terminal of the charging unit 861 is connected to the input terminal of the auxiliary power supply unit 862. The switching unit 863 is connected to the external power grid 508, the output terminal of the auxiliary power supply unit 862, and the input terminal of the rectifier circuit 510, respectively. The switching unit 863 selectively connects the loop between the external power grid 508 and the rectifier circuit 510, or the loop between the auxiliary power supply unit 862 and the rectifier circuit 510, depending on the power supply status of the external power grid 508. Specifically, when the external power grid 508 is supplying power normally, the switching unit 863 connects the loop between the external power grid 508 and the rectifier circuit 510 and disconnects the loop between the auxiliary power supply unit 862 and the rectifier circuit 510, so that the power supplied by the external power grid 508 is provided as an external drive signal Sed to the input terminal of the rectifier circuit 510 through the switching unit 863. At this time, the charging unit 861 charges the auxiliary power supply unit 862 based on the power supplied by the external power grid 508. When the power supply of the external power grid 508 is abnormal or interrupted, the switching unit 863 switches to conduct the loop between the auxiliary power supply unit 862 and the rectifier circuit 510, so that the auxiliary power supply unit 862 starts to discharge to provide auxiliary power as an external drive signal Sed to the rectifier circuit 510.

[0482] In the above embodiments, the auxiliary power provided by the auxiliary power supply unit 762 / 862 can be AC ​​or DC. When the provided power is AC, the auxiliary power supply unit 762 / 862 includes, for example, an energy storage unit and a DC-AC converter; when the provided power is DC, the auxiliary power supply unit 762 / 862 includes, for example, an energy storage unit and a DC-DC converter, or only an energy storage unit, and this application is not limited thereto. The energy storage unit can be, for example, a battery module consisting of several energy storage batteries. The DC-DC converter can be, for example, a boost, buck, or buck-boost DC-DC converter circuit. The auxiliary power supply module 760 / 860 further includes a voltage detection circuit (not shown). The voltage detection circuit can be used to detect the operating status of the external power grid 508 and, based on the detection result, send a signal to control the switching unit 763 / 863 or the auxiliary power supply unit 762 / 862, thereby determining whether the LED tube light operates in normal lighting mode (i.e., powered by the external power grid 508) or emergency mode (i.e., powered by the auxiliary power supply module 760 / 860). The switching unit 763 / 863 can be implemented using a three-terminal switch or two complementary switches. If two complementary switches are used, the two switches can be connected in series in the power supply circuit of the external power grid 508 and the power supply circuit of the auxiliary power supply module 760 / 860, respectively; and the control method is that when one switch is on, the other switch is off.

[0483] In one exemplary embodiment, the switching unit 763 / 863 can be implemented using a relay. This relay is similar to a two-mode selector switch. When operating in normal lighting mode (i.e., mains power as the external driving signal), the relay is energized and engaged upon power-up, and the LED tube light's power module is not electrically connected to the auxiliary power supply module 760 / 860. If the mains power is abnormal, the relay's electromagnetic attraction disappears, returning to its initial position. At this point, the LED tube light's power module is electrically connected to the auxiliary power supply module 760 / 860 via the relay, enabling the auxiliary power supply module to operate.

[0484] From the perspective of the overall lighting system, when used for general lighting applications, the auxiliary power supply module 760 / 860 is not operational, and is powered by the mains electricity; the mains electricity also charges the battery module within the auxiliary power supply module. In emergency applications, the battery module uses a boost DC-DC converter circuit to boost its voltage to the voltage required for LED module 50 to operate, causing LED module 50 to illuminate. Typically, the boosted voltage is 4-10 times the original battery module voltage (ideally 4-6 times); the voltage required for LED module 50 to operate is between 40-80V (ideally between 55-75V, 60V is used in this case).

[0485] In this embodiment, a single cylindrical battery is selected. The battery is encapsulated in a metal casing to reduce the risk of electrolyte leakage. In this embodiment, the battery adopts a modular design, using two battery cells connected in series and then packaged to form a battery module. Multiple battery modules can be electrically connected sequentially (in series or parallel) and installed inside the lamp, facilitating future maintenance. If some battery modules are damaged, the damaged modules can be replaced promptly without replacing all battery modules. The battery module can be cylindrical, with its inner diameter slightly larger than the outer diameter of the battery cells, allowing the battery cells to be placed sequentially into the module, forming positive and negative terminals at both ends. In one embodiment, the voltage of the multiple series-connected battery modules is below 36V. In other embodiments, the battery module can be cuboid, with the width of the cuboid slightly larger than the outer diameter of the battery, securely clamping the battery within the module. The module features a snap-fit ​​pluggable structure or other easily pluggable assembly structures.

[0486] In this embodiment, the charging unit 761 / 861 may be, for example, a BMS module (Battery Management System) for managing battery modules. Its main purpose is to intelligently manage and maintain each battery module, prevent overcharging and over-discharging of the battery, extend the battery's lifespan, and monitor the battery's status.

[0487] The BMS module has a pre-set interface for connecting to external devices. During periodic checks, information about the battery inside the battery module is read by connecting to this interface. If an abnormality is detected in the battery module, the corresponding battery module is replaced.

[0488] In other embodiments, the number of batteries in the battery module can be multiple, such as 3, 4, 30, etc. In this case, the batteries in the battery module can be connected in series or in a mixed series-parallel connection, depending on the application. If lithium batteries are used, the voltage of a single lithium battery is about 3.7V, and the number of batteries can be appropriately reduced so that the voltage of the battery system is lower than 36V.

[0489] The relay in this embodiment is an electromagnetic relay, mainly composed of an iron core, coil, armature, and contact springs. Its working principle is as follows: When a certain voltage is applied across the coil, a certain current flows through it, generating an electromagnetic effect. The armature, attracted by the electromagnetic force, overcomes the tension of the return spring and is drawn towards the iron core, causing the moving contact of the armature to engage with the stationary contact (normally open contact). When the coil is de-energized, the electromagnetic attraction disappears, and the armature returns to its initial position under the spring's reaction force, causing the moving contact to engage with the original stationary contact (normally closed contact). This engagement and release achieves the purpose of connecting and disconnecting the circuit. The "normally open" and "normally closed" contacts of the relay can be distinguished as follows: the stationary contact that is in the open state when the relay coil is not energized is called the "normally open contact"; the stationary contact that is in the closed state is called the "normally closed contact".

[0490] In one exemplary embodiment, the brightness of the LED module illuminated by an external drive signal differs from its brightness illuminated by auxiliary power. This allows the user to detect potential external power supply malfunctions when observing changes in lamp brightness, enabling them to quickly resolve the issue. In other words, the auxiliary power supply modules 560 / 760 / 860 of this embodiment can provide auxiliary power with a different power level to the LED module when an external drive signal malfunctions, thus giving the LED module different brightness levels as an indication of whether the external drive signal is being supplied correctly. For example, in this embodiment, when the LED module is illuminated by an external drive signal, its brightness may be, for example, 1600-2000 lumens; when the LED module is illuminated by auxiliary power provided by the auxiliary power supply modules 560 / 760 / 860, its brightness may be, for example, 200-250 lumens. From the perspective of the auxiliary power supply module 560 / 760 / 860, in order to enable the LED module to have a brightness of 200-250 lumens when lit, the output power of the auxiliary power supply module 560 / 760 / 860 can be, for example, 1 watt to 5 watts, but this application is not limited thereto. Furthermore, the capacity of the energy storage component in the auxiliary power supply module 560 / 760 / 860 can be, for example, 1.5 watt-hours to 7.5 watt-hours or more, so that the LED module can be continuously lit for more than 90 minutes at a brightness of 200-250 lumens based on auxiliary power, but this application is also not limited thereto.

[0491] From a structural perspective, such as Figure 16I As shown, Figure 16IThis is a schematic diagram of the configuration of the auxiliary power supply module according to the first embodiment of this application. In this embodiment, the auxiliary power supply module 560 / 760 / 860 (for brevity, only 760 is shown in the diagram, and it will be described as auxiliary power supply module 760 below) can be configured in the lamp tube 1 as in the aforementioned embodiment, or it can be configured in the lamp holder 3. In this configuration, the auxiliary power supply module 760 can be connected from inside the lamp holder 3 to the corresponding first pin 501 and second pin 502 to receive external drive signals provided to the first pin 501 and second pin 502. Compared to the configuration where the auxiliary power supply module 760 is placed in the lamp tube 1, since the auxiliary power supply module 760 in this embodiment is configured in the lamp holder 3 on both sides of the lamp tube 1, it is farther away from the LED module inside the lamp tube 1, making the heat generated by the auxiliary power supply module 760 during charging and discharging less likely to affect the operation and luminous efficiency of the LED module. In addition, the auxiliary power supply module 760 and the power supply module of the LED straight tube lamp can be configured in the same lamp holder or placed in separate lamp holders on opposite sides. Placing the auxiliary power supply module 760 and the power supply module in different lamp holders allows for greater flexibility in the overall circuit layout.

[0492] In another embodiment, the auxiliary power supply module 760 can also be disposed in a lamp holder corresponding to the LED tube light, such as... Figure 16J As shown, Figure 16J This is a schematic diagram of the auxiliary power supply module configuration according to the second embodiment of this application. The lamp holder 1_LH includes a base 101_LH and a connecting socket 102_LH. The base 101_LH houses the power supply lines and is suitable for locking / attaching to a fixed object such as a wall or ceiling. The connecting socket 102_LH has slots corresponding to the pins (such as the first pin 501 and the second pin 502) on the LED tube light, wherein the slots are electrically connected to the corresponding power supply lines. In this embodiment, the connecting socket 102_LH may be integrally formed with the base 101_LH or detachably mounted on the base 101_LH; this application is not limited to this.

[0493] When the LED tube light is installed in the lamp holder 1_LH, the pins on both ends of the lamp head 3 are respectively inserted into the slots of the corresponding connector 102_LH, thereby electrically connecting to the corresponding power lines so that external drive signals can be provided to the corresponding pins. In this embodiment, the auxiliary power supply module 760 is disposed in the connector 102_LH and connected to the power lines to receive external drive signals. Taking the configuration of the left lamp head 3 as an example, when the first pin 501 and the second pin 502 are inserted into the slots of the left connector 102_LH, the auxiliary power supply module 760 will electrically connect the first pin 501 and the second pin 502 through the slots, thereby achieving the following: Figure 16D Connection configuration.

[0494] Compared to embodiments where the auxiliary power supply module 760 is placed in the lamp holder 3, since the connection socket 102_LH can be designed as a detachable configuration, in one exemplary embodiment, the connection socket 102_LH and the auxiliary power supply module 760 can be integrated into a modular configuration. This allows for easy replacement of the auxiliary power supply module 760 by simply replacing the modular connection socket 102_LH when the auxiliary power supply module 760 fails or reaches the end of its lifespan, without needing to replace the entire LED tube light. In other words, this embodiment not only has the advantage of reducing the impact of heat generated by the auxiliary power supply module 760 on the LED module, but also simplifies the replacement of the auxiliary power supply module 760 through its modular design, eliminating the need to replace the entire LED tube light when the auxiliary power supply module 760 malfunctions, thus improving the durability of the LED tube light. Furthermore, in one exemplary embodiment, the auxiliary power supply module 760 can also be disposed in the base 101_LH of the lamp holder 1_LH or externally on the lamp holder 1_LH; this application is not limited to these limitations.

[0495] In general, the auxiliary power supply module 760 can be configured in two ways: (1) integrated inside the LED tube light, and (2) independent of the LED tube light. In the configuration example where the auxiliary power supply module 760 is independent of the LED tube light, if it is an offline auxiliary power supply method, the auxiliary power supply module 760 and the power supply from the external power grid can be supplied to the LED tube light through different pins, or they can be supplied to the LED tube light by sharing at least one pin. On the other hand, if it is an online or online interactive auxiliary power supply method, the power signal from the external power grid will not be directly supplied to the pins of the LED tube light, but will first be supplied to the auxiliary power supply module 760, and then the auxiliary power supply module 760 will send the signal to the power module inside the LED tube light through the pins of the LED tube light. The following is a further explanation of the overall configuration of the auxiliary power supply module (hereinafter referred to as the independent auxiliary power supply module) independent of the LED tube light and the LED tube light.

[0496] Please see Figure 16K , Figure 16K This is a circuit block diagram of an LED straight tube lighting system according to the sixth embodiment of this application. The LED straight tube lighting system includes an LED straight tube 600 and an auxiliary power supply module 960. The LED straight tube 600 in this embodiment includes rectifier circuits 510 and 540, a filter circuit 520, a driver circuit 530, and an LED module (not shown). The rectifier circuits 510 and 540 can be respectively... Figure 11A The full-wave rectifier circuit 610 shown is or Figure 11BThe illustrated half-wave rectifier circuit 710 has two input terminals connected to the first pin 501 and the second pin 502, respectively, and two input terminals connected to the third pin 503 and the fourth pin 504, respectively.

[0497] In this embodiment, the LED tube light 600 is illustrated with a dual-ended power supply configuration. The external power grid 508 is connected to pins 501 and 503 on both sides of the LED tube light 600, and the auxiliary power supply module 960 is connected to pins 502 and 504 on both sides of the LED tube light 600. That is, the external power grid 508 and the auxiliary power supply module 960 supply power to the LED tube light 600 through different pins. It should be noted that although this embodiment is illustrated as a dual-ended power supply configuration, this application is not limited to this. In another embodiment, the external power grid 508 can also be powered through the first pin 501 and the second pin 502 on the same side of the lamp head (i.e., a single-ended power supply configuration). In this case, the auxiliary power supply module 960 can be powered through the third pin 503 and the fourth pin 504 on the other side of the lamp head. In other words, regardless of whether it is a single-ended or double-ended power supply configuration, by selecting the corresponding rectifier circuit configuration, the previously unused pins (such as 502 and 504) in the LED straight tube lamp 600 can be used as interfaces to receive auxiliary power, thereby realizing the integration of emergency lighting functions in the LED straight tube lamp 600.

[0498] Please see Figure 16L , Figure 16L This is a circuit block diagram of an LED straight tube lighting system according to the seventh embodiment of this application. The LED straight tube lighting system includes an LED straight tube 700 and an auxiliary power supply module 1060. The LED straight tube 700 in this embodiment includes a rectifier circuit 510, a filter circuit 520, a driver circuit 530, and an LED module (not shown). The rectifier circuit 510 can be, for example, as follows: Figures 11D to 11F One of the rectifier circuits shown is a rectifier circuit 910 with three bridge arms, wherein the rectifier circuit 910 has three input signal receivers P1, P2, and P3. Input signal receiver P1 is connected to a first pin 501, input signal receiver P2 is connected to a second pin 502 and is adapted to be connected to an auxiliary power supply module 1060 through the second pin 502, and input signal receiver P3 is adapted to be connected to the auxiliary power supply module 1060 through a third pin 503.

[0499] In this embodiment, the LED tube light 700 is also configured with dual-ended power supply, and the external power grid 508 is connected to pins 501 and 503 on both sides of the LED tube light 700. Unlike the previous embodiment, the auxiliary power supply module 1060 in this embodiment, in addition to being connected to the second pin 502, also shares a third pin 503 with the external power grid 508. Under this configuration, the power provided by the external power grid 508 is supplied to the signal receiving terminals P1 and P3 of the rectifier circuit 510 through the first pin 501 and the third pin 503, and the power provided by the auxiliary power supply module 1060 is supplied to the signal receiving terminals P2 and P3 of the rectifier circuit 510 through the second pin 502 and the third pin 503. More specifically, if the lines coupled to the external power grid 508 at the first pin 501 and the third pin 503 are the live wire (L) and the neutral wire (N) respectively, then the auxiliary power supply module 1060 shares the neutral wire (N) with the external power grid 508, while the live wires are independent. In other words, the signal receiver P3 is a shared terminal between the external power grid 508 and the auxiliary power supply module 1060.

[0500] In terms of operation, when the external power grid 508 is supplying power normally, the rectifier circuit 510 can perform full-wave rectification through the bridge arms corresponding to signal receivers P1 and P3 to supply power to the LED module. When the external power grid 508 is abnormal, the rectifier circuit 510 can receive auxiliary power from the auxiliary power supply module 1060 through signal receivers P2 and P3 to supply power to the LED module. The unidirectional conduction characteristic of the diodes in the rectifier circuit 510 isolates the external drive signal from the auxiliary power input, preventing them from interfering with each other, and achieving the same effect of providing auxiliary power when the external power grid 508 malfunctions. In practical applications, the rectifier circuit 510 can be implemented using fast recovery diodes to accommodate the high-frequency characteristics of the emergency power supply output current.

[0501] In addition, since this embodiment receives the auxiliary power from the auxiliary power supply module 1060 through a shared third pin 503, the LED straight tube lamp 700 also has an unused fourth pin (not shown) that can be used as a signal input interface for other control functions. These other control functions may include, for example, dimming functions, communication functions, sensing functions, etc., and this application is not limited thereto. The following are examples of further integrating dimming control functions into the LED straight tube lamp 700 for illustration.

[0502] Pleas...

Claims

1. A judgment circuit for detecting switch state, characterized in that, The application relates to a power supply circuit, comprising: a first signal input end coupled to an AC power supply through a switch; a second signal input end coupled to the AC power supply; a voltage dividing module comprising a first voltage dividing module and a second voltage dividing module, each of the voltage dividing modules having a voltage dividing point, i.e. a first voltage dividing point and a second voltage dividing point, wherein the first voltage dividing module is coupled to the first signal input end, and the second voltage dividing module is coupled to the second signal input end; a judging module having a first input port, a second input port, a first output port and a power supply port, wherein the first input port is coupled to the first voltage dividing point, the second input port is coupled to the second voltage dividing point, a resistor is arranged between the first output port and the second input port to form a feedback loop, the first input port signal and the second input port signal are logically judged, and the judging result is output through the first output port; and a buffer module having one end coupled to the first output port and the other end coupled to a signal ground, wherein the one end coupled to the first output port is coupled to a judging signal output end to adjust the state of the signal output of the judging signal output end, i.e. the state of the switch. The first voltage dividing module has at least two first voltage dividers connected in series, and the first voltage dividing point is located at the series connection node of the two voltage dividers; the second voltage dividing module has at least two second voltage dividers connected in series, and the second voltage dividing point is located at the series connection node of the two voltage dividers.

2. The judging circuit according to claim 1, wherein The first signal input end and the second signal input end both have signal input, when the signal of the first input port is greater than or higher than the signal of the second input port, the first output port outputs a high level, when the signal of the first input port is less than or lower than the signal of the second input port, the first output port outputs a low level, and the judging signal output end outputs an enable level.

3. The judging circuit according to claim 2, wherein The first signal input end has no signal input, and the second signal input end has signal input, and the judging signal output end outputs a disable level.

4. The judging circuit according to claim 3, wherein When the first output port outputs a high level, the buffer module is in a charging state; when the first output port outputs a low level, the buffer module is in a power supply state, if the first output port restores a high level before the buffer module finishes discharging, the judging signal output end outputs an enable level, if the first output port cannot restore a high level before the buffer module finishes discharging, the judging signal output end outputs a disable level.

5. The judging circuit according to claim 4, wherein The judging circuit is a comparator.

6. The judging circuit according to claim 5, wherein The buffer module is a capacitor.

7. The judging circuit according to claim 5, wherein The first voltage divider and the second voltage divider are resistors.

8. The judging circuit according to claim 5, wherein The application further relates to an auxiliary power supply circuit, comprising:

9. An auxiliary power module, characterized by an auxiliary power supply for storing electric energy; a charging circuit electrically connected to the auxiliary power supply to charge the auxiliary power supply; a discharging circuit electrically connected to the auxiliary power supply to generate an auxiliary power supply signal. ​ The power supply detection circuit comprises an external signal detection module and the judging circuit according to any one of claims 1-8, wherein the external signal detection module is electrically connected to an external power signal source to detect the state of the external power signal, and the power supply detection circuit outputs a power supply detection signal; and The central processing unit is electrically connected to the external signal detection module, the judging module, the power supply detection circuit, the driving circuit and the discharging circuit to enable or disable the driving circuit and / or the discharging circuit according to the power supply detection signal, wherein the detection result of the external signal detection module has a higher priority than the detection result of the switch state detection module.

10. A power module, characterized by The power supply module comprises: at least three pins, a first pin of which is electrically connected to a live wire of an AC power supply, a second pin of which is electrically connected to a neutral wire of the AC power supply, and a third pin of which is electrically connected to the live wire of the AC power supply through the switch; a rectifier circuit electrically connected to the first pin and the second pin to receive an external power signal and convert it into a DC signal to generate a rectified signal; a filter circuit electrically connected to the rectifier circuit to receive the rectified signal and filter it to generate a filtered signal; a driving circuit electrically connected to the filter circuit to receive the filtered signal and convert it into a driving signal; and the auxiliary power supply module according to claim 9, which is electrically connected to the filter circuit and the third pin to receive the filtered signal and generate the auxiliary power supply signal when the external power signal is abnormal or stops being supplied.

11. An LED lamp, characterized by The power supply module comprises: a lamp tube; a lamp cap arranged at both ends of the lamp tube; a lamp plate arranged in the lamp tube; the power supply module according to claim 10, which is electrically connected to the lamp plate to connect an external power source and generate a driving signal or an auxiliary power supply signal; and an LED module comprising at least one light-emitting diode, which is electrically connected to the power supply module to receive the driving signal or the auxiliary power supply signal to light up.

Images