• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An LED tube adapted for use with an electronic ballast and a controlling method thereof are disclosed. The proposed LED tube adapted for use with an electronic ballast includes a filament simulation circuit electrically connected to one of the electronic ballast and AC mains, a 5 voltage isolation circuit electrically connected to the filament simulation circuit, and a fluorescent lamp tube simulation circuit electrically connected to the filament simulation circuit and including a lamp tube voltage simulation circuit.10
    公开号:NL2016063A
    申请号:NL2016063
    申请日:2016-01-07
    公开日:2016-09-23
    发明作者:Lee Bing-Huang；Tseng Wei-Jing；Yu Chung-Hung；Liu Chin-Tsai
    申请人:Asiatree Tech Co Ltd；
    IPC主号:
    专利说明:

    LED tube adapted for use with electronic ballast or ac mains and controlling method thereof
    CROSS-REFERENCES TO RELATED APPLICATIONS
    [0001] This application claims the benefits of Taiwan Patent Application Numbers 104100586 filed on January 8, 2015 and 104138841 filed on November 23, 2015, at the Taiwan Intellectual Property Office, the disclosures of which are incorporated herein in their entirety by reference.
    FIELD OF THE INVENTION
    [0002] The present invention relates to a light-emitting diode (LED) tube adapted for use with an electronic ballast or AC mains and controlling method thereof, in particular to an LED tube including a filament simulation circuit and a fluorescent lamp tube simulation circuit, and adapted for use with an electronic ballast or AC mains, and controlling method thereof.
    BACKGROUND OF THE INVENTION
    [0003] The main electronic ballasts on the market can be divided into three categories: 1. preheat electronic ballast, 2. instant-start electronic ballast, and 3. rapid-start electronic ballast. Fig. 1(a) shows a schematic circuit diagram of a fluorescent lamp system 1 including a preheat electronic ballast 11. As shown in Fig. 1(a) , the preheat electronic ballast 11 includes an active PFC stage 111 and a first half-bridge resonant tank 112. In Fig. 1(a), the fluorescent lamp system 1 further includes a fluorescent lamp tube 12 and an AC power source 13, the preheat electronic ballast 11 will preheat the filaments via a small current and then start the fluorescent lamp tube 12. Fig. 1(b) shows a schematic circuit diagram of a fluorescent lamp system 2 including an instant-start electronic ballast 21. As shown in Fig. 1(b), the instant-start electronic ballast 21 includes a passive PFC stage 211 and a second half-bridge resonant tank 212. In Fig. 1(b), the fluorescent lamp system 2 also includes the fluorescent lamp tube 12 and the AC power source 13, and the instant-start electronic ballast 21 will provide a high voltage and then start the fluorescent lamp tube 12. Fig. 1 (c) shows a schematic circuit diagram of a fluorescent lamp system 3 including a rapid-start electronic ballast 31. As shown in Fig. 1(c), the rapid-start electronic ballast 31 includes a passive PFC stage 311 and a third half-bridge resonant tank 312. In Fig. 1(c), the fluorescent lamp system 3 includes the fluorescent lamp tube 12 and the AC power source 13 as well, and the rapid-start electronic ballast 31 has auxiliary windings (P1-P3) , which continuously provide voltage to the filaments to provide heating current, and this design is more frequently used in Europe, the US and Japan.
    [0004] When an LED tube is used to replace a fluorescent lamp tube, there are problems regarding the removal of the original ballast and jumper wire. Specifically, if the fluorescent lamp tube can be replaced with an LED tube that matches the electronic ballast, it will greatly raise consumer acceptance because the electronic ballast is quite expensive. Thus, how to design an LED tube adapted for use with existing/commercially available electronic ballasts is worthy of further research and improvement.
    [0005] Keeping the drawbacks of the prior art in mind, and through the use of robust and persistent experiments and research, the applicant has finally conceived of an LED tube adapted for use with an electronic ballast or AC mains and a controlling method thereof.
    SUMMARY OF THE INVENTION
    [0006] It is an objective of the present invention to provide an LED tube for use with an electronic ballast or AC mains to replace a fluorescent lamp tube with a basic configuration using the characteristics of the electronic ballast adapted for use with a dual-fast bridge rectifier without changing the circuitry, wherein the LED tube includes a filament simulation circuit and a fluorescent lamp tube simulation circuit, the filament simulation circuit comprises the basic configuration, a capacitor connected to the basic configuration in parallel, a resistor connected to the basic configuration in parallel, the capacitor and the resistor both connected to the basic configuration in parallel, or a combination of a capacitor and two resistors connected to the basic configuration in parallel, and the fluorescent lamp tube simulation circuit comprises LEDs, or LEDs adapted for use with a tube voltage simulation circuit so as to respond to the filament detection scheme and the tube voltage detection scheme within the electronic ballast.
    [0007] In accordance with the first aspect of the present invention, an LED tube adapted for use with an electronic ballast comprises a filament simulation circuit including a first rectifier circuit having at least one of a first instance of two fast diodes and a second instance of two super fast diodes, and a second rectifier circuit having at least one of a first instance of two fast diodes and a second instance of two super fast diodes, wherein the electronic ballast includes a first lamp tube connector with a first terminal and a second terminal, and a second lamp tube connector with a third terminal and a fourth terminal, the first rectifier circuit is electrically connected to the first and the second terminals and the second rectifier circuit is electrically connected to the third and the fourth terminals.
    [0008] In accordance with the second aspect of the present invention, an LED tube adapted for use with an electronic ballast comprises a filament simulation circuit electrically connected to one of the electronic ballast and AC mains, a voltage isolation circuit electrically connected to the filament simulation circuit, and a fluorescent lamp tube simulation circuit electrically connected to the filament simulation circuit and including a lamp tube voltage simulation circuit.
    [0009] In accordance with the third aspect of the present invention, a controlling method for an LED tube adapted for use with one of an electronic ballast and AC mains, wherein the electronic ballast includes a resistance detection mode and a lamp tube voltage detection mode, comprises: providing an output voltage from the one of the electronic ballast and the AC mains to the LED tube; simulating a resistance of a filament of a fluorescent lamp tube in response to the resistance detection mode; in response to the lamp tube voltage detection mode, providing a stable lamp tube voltage; and determining whether the LED tube is operating normally based on the simulated resistance and the stable lamp voltage.
    [0010] In accordance with the fourth aspect of the present invention, a controlling method for an LED tube adapted for use with an electronic ballast, wherein the electronic ballast includes a resistance detection mode and a lamp tube voltage detection mode, comprises: providing a simulation datum of a resistance of a filament of a fluorescent lamp tube in response to the resistance detection mode so as to present a first status showing that the resistance of the filament is normal; providing a stable lamp tube voltage; and in response to the lamp tube voltage detection mode based on the stable lamp tube voltage, presenting a second status showing that a lamp tube voltage is normal such that the LED tube operates normally.
    BRIEF DESCRIPTION OF THE DRAWINGS
    [0011] Other objectives, advantages and the efficacy of the present invention will be described in detail below taken from the preferred embodiments with reference to the accompanying drawings, in which: [0012] Fig. 1(a) is a schematic circuit diagram of a fluorescent lamp system including a preheat electronic ballast.
    [0013] Fig. 1(b) is a schematic circuit diagram of a fluorescent lamp system including an instant-start electronic ballast.
    [0014] Fig. 1(c) is a schematic circuit diagram of a fluorescent lamp system including a rapid-start electronic ballast.
    [0015] Fig. 2 is a schematic circuit diagram of a lamp including an electronic ballast and an LED replacement tube according to the first preferred embodiment of the present invention.
    [0016] Fig. 3 is a schematic circuit diagram of a filament simulation circuit according to the second preferred embodiment of the present invention.
    [0017] Fig. 4 is a schematic circuit diagram of a filament simulation circuit according to the third preferred embodiment of the present invention.
    [0018] Fig. 5 is a schematic circuit diagram of a filament simulation circuit according to the fourth preferred embodiment of the present invention.
    [0019] Fig. 6 is a schematic circuit diagram of a filament simulation circuit according to the fifth preferred embodiment of the present invention.
    [0020] Fig. 7 is a schematic circuit diagram of a filament simulation circuit according to the sixth preferred embodiment of the present invention.
    [0021] Fig. 8 is a schematic circuit diagram of a filament simulation circuit according to the seventh preferred embodiment of the present invention.
    [0022] Fig. 9(a) is a schematic circuit diagram of a fluorescent lamp tube simulation circuit according to the eighth preferred embodiment of the present invention .
    [0023] Fig. 9(b) is a schematic circuit diagram of a fluorescent lamp tube simulation circuit according to the ninth preferred embodiment of the present invention.
    [0024] Fig. 9(c) is a schematic circuit diagram of a fluorescent lamp tube simulation circuit according to the tenth preferred embodiment of the present invention .
    [0025] Fig. 9(d) is a schematic circuit diagram of a fluorescent lamp tube simulation circuit according to the eleventh preferred embodiment of the present invention.
    [0026] Fig. 10 is a schematic circuit diagram of a lamp including an LED replacement tube adapted for use with an electronic ballast or an AC mains and an AC isolation circuit according to the twelfth preferred embodiment of the present invention.
    [0027] Fig. 11 is a schematic circuit diagram of a lamp including an LED replacement tube adapted for use with an electronic ballast or an AC mains and an AC isolation circuit according to the thirteenth preferred embodiment of the present invention.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
    [0028] The present invention will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of the preferred embodiments of this invention are presented herein for purposes of illustration and description only; they are not intended to be exhaustive or to be limited to the precise form disclosed.
    [0029] Fig. 2 shows a schematic diagram of a lamp 4 including an electronic ballast 41 and an LED replacement tube 42 according to the first preferred embodiment of the present invention. In Fig. 2, the electronic ballast 41 includes a first lamp tube connector with a first terminal and a second terminal (L1-L2), and a second lamp tube connector with a third terminal and a fourth terminal (L3-L4), the LED replacement tube 42 includes a filament simulation circuit 421 and a fluorescent lamp tube simulation circuit 422 electrically connected to the filament simulation circuit 421, the filament simulation circuit 421 is electrically connected to the first and the second lamp tube connectors (L1-L4) , and the electronic ballast is electrically connected to an AC power source Vac. The filament simulation circuit 421 according to the preferred embodiments of the present invention can be categorized into the following types.
    [0030] Fig. 3 is a schematic circuit diagram of a filament simulation circuit 521 according to the second preferred embodiment of the present invention. In Fig. 3, the filament simulation circuit 521 includes a first bridge rectifier circuit 5211 having four fast diodes and a second bridge rectifier circuit 5212 having four fast diodes, which is suitable for use with the three electronic ballasts as shown in Figs. 1(a)-1(c). However, it is relatively not very suitable for use with the electronic ballast having the filament resistance detection circuit.
    [0031] Fig. 4 is a schematic circuit diagram of a filament simulation circuit 621 according to the third preferred embodiment of the present invention. In Fig. 4, the filament simulation circuit 621 includes a first rectifier circuit 6211 having a dual-fast diode and a second rectifier circuit 6212 having a dual-fast diode, which is suitable for use with the preheat electronic ballast and the instant-start electronic ballast above. However, it is relatively not very suitable for use with the rapid-start electronic ballast above because the auxiliary windings heating the filaments can easily generate a large current resulting in damage to the ballast and extra power losses.
    [0032] Fig. 5 is a schematic circuit diagram of a filament simulation circuit 721 according to the fourth preferred embodiment of the present invention. In Fig. 5, the filament simulation circuit 721 includes a first bridge rectifier circuit 7211 having a resistor electrically connected to the two input terminals thereof in parallel and a second bridge rectifier circuit 7212 having a resistor electrically connected to the two input terminals thereof in parallel. The first bridge rectifier circuit 7211 having the resistor electrically connected to the input terminals includes a first bridge rectifier having four fast diodes and a resistor Rl electrically connected to the first bridge rectifier in parallel. The second bridge rectifier circuit 7212 having the resistor electrically connected to the input terminals includes a second bridge rectifier having four fast diodes and a resistor R2 electrically connected to the second bridge rectifier in parallel. The filament simulation circuit 721 is suitable for use with all three electronic ballasts above. However, the resistances above were determined by considering the largest resistance acceptable to the filament simulation circuit 721 and the power losses caused by the auxiliary windings of the rapid-start electronic ballast.
    [0033] Fig. 6 is a schematic circuit diagram of a filament simulation circuit 821 according to the fifth preferred embodiment of the present invention. In Fig. 6, the filament simulation circuit 821 includes a first bridge rectifier circuit 8211 having a first bridge rectifier with four fast diodes and a capacitor Cl electrically connected to the first bridge rectifier in parallel and a second bridge rectifier circuit 8212 having a second bridge rectifier with four fast diodes and a capacitor C2 electrically connected to the second bridge rectifier in parallel, and is suitable for use with all three electronic ballasts above. The filament simulation circuit 821 can use large capacitors (Cl and C2) connected to the input terminals thereof to cope with the detection scheme of the electronic ballast 41, and avoid any extra power losses caused by the auxiliary windings when the rapid-start electronic ballast above is used.
    [0034] Fig. 7 is a schematic circuit diagram of a filament simulation circuit 921 according to the sixth preferred embodiment of the present invention. In Fig. 7, the filament simulation circuit 921 includes a first bridge rectifier circuit 9211 having a first bridge rectifier with four fast diodes, and a resistor R1 and a capacitor Cl both electrically connected to the first bridge rectifier in parallel and a second bridge rectifier circuit 9212 having a second bridge rectifier with four fast diodes, and a resistor R2 and a capacitor C2 both electrically connected to the second bridge rectifier in parallel, which combines the characteristics of those in Figs. 5 and 6 to avoid the use of capacitors with extra large capacitances and any extra power losses caused by the auxiliary windings when the rapid-start electronic ballast above is used.
    [0035] Fig. 8 is a schematic circuit diagram of a filament simulation circuit 1021 according to the seventh preferred embodiment of the present invention. In Fig. 8, the filament simulation circuit 1021 includes a first bridge rectifier circuit 10211 having a combination of capacitor and resistor connected in parallel with two input terminals thereof, and a second bridge rectifier circuit 10212 having a combination of capacitor and resistor connected in parallel with two input terminals thereof. The first bridge rectifier circuit 10211 includes a first bridge rectifier with four fast diodes, a first resistor Rl, a first capacitor Cl and a second resistor R2, all connected to the first bridge rectifier in parallel with Rl and Cl connected in series, and R2 connected with the serially connected Rl and Cl in parallel. The second bridge rectifier circuit 10212 includes a second bridge rectifier with four fast diodes, a third resistor R3, a second capacitor C2 and a fourth resistor R4, all connected to the second bridge rectifier in parallel with R3 and C2 connected in series, and R4 connected with the serially connected R3 and C2 in parallel.
    [0036] Fig. 9(a) shows a schematic circuit diagram of a fluorescent lamp tube simulation circuit 522 according to the eighth preferred embodiment of the present invention. The fluorescent lamp tube simulation circuit 522 has a first terminal L+ and a second terminal L-, and includes a plurality of LEDs 5221 electrically connected to one another in parallel or in series, and the fluorescent lamp tube simulation circuit 522 is used to simulate a stable lamp tube voltage of an existing fluorescent lamp tube .
    [0037] Fig. 9(b) shows a schematic circuit diagram of a fluorescent lamp tube simulation circuit 622 according to the ninth preferred embodiment of the present invention. The fluorescent lamp tube simulation circuit 622 has a first terminal L+ and a second terminal L-, and includes a plurality of LEDs 5221 electrically connected to one another in parallel or in series and a tube voltage simulation circuit 6221. The fluorescent lamp tube simulation circuit 622 uses the plurality of LEDs 5221 electrically connected to one another in parallel or in series to simulate a stable lamp tube voltage of an existing fluorescent lamp tube, and uses the fluorescent lamp tube simulation circuit 6221 to simulate a starting high voltage for the lamp tube.
    [0038] Fig. 9(c) shows a schematic circuit diagram of a fluorescent lamp tube simulation circuit 722 according to the tenth preferred embodiment of the present invention. The fluorescent lamp tube simulation circuit 722 has a first terminal L+ and a second terminal L-, and includes a plurality of LEDs 5221 electrically connected to one another in parallel or in series, and a tube voltage simulation circuit 7221 which is a DIAC. The fluorescent lamp tube simulation circuit 722 not only uses the plurality of LEDs 5221 electrically connected to one another in parallel or in series to simulate a stable lamp tube voltage of an existing fluorescent lamp tube, but also uses the fluorescent lamp tube simulation circuit 7221 (the DIAC) to simulate a starting high voltage for the lamp tube .
    [0039] Fig. 9(d) shows a schematic circuit diagram of a fluorescent lamp tube simulation circuit 822 according to the eleventh preferred embodiment of the present invention. The fluorescent lamp tube simulation circuit 822 has a first terminal L+ and a second terminal L-, and includes a plurality of LEDs 5221 electrically connected to one another in parallel or in series, and a tube voltage simulation circuit 8221 which is an SUS. The fluorescent lamp tube simulation circuit 822 not only uses the plurality of LEDs 5221 electrically connected to one another in parallel or in series to simulate a stable lamp tube voltage of an existing fluorescent lamp tube, but also uses the fluorescent lamp tube simulation circuit 8221 (the SUS) to simulate a starting high voltage for the lamp tube. The fluorescent lamp tube simulation circuits in Figs. 9 (a)-9(d) can not only be a DIAC or an SUS, but can also be one selected from a group consisting of an SIDAC, an SBS, an ASBS, an SAS, a Zener, an SCR, a TRIAC and a semiconductor element including at least one of a MOSFET and a BJT. The fluorescent lamp tube voltage simulation circuit bears the starting high voltage for the lamp tube at the beginning, and the voltage across its two terminals decreases after the current flowing therethrough reaches a certain value to achieve a stable lamp tube voltage.
    [0040] Fig. 10 shows a schematic circuit diagram of a lamp 5 including an LED replacement tube adapted for use with an electronic ballast or an AC mains and a voltage isolation circuit 51 having a first capacitor Cl to a fourth capacitor C4 according to the twelfth preferred embodiment of the present invention. In Fig. 10, the LED replacement tube includes a filament simulation circuit 1121 and a fluorescent lamp tube simulation circuit 422. The filament simulation circuit 1121 includes a first bridge rectifier circuit 11211 having a combination of resistor and capacitor connected in parallel with two input terminals thereof, and a second bridge rectifier circuit 11212 having a combination of resistor and capacitor connected in parallel with two input terminals thereof. The first bridge rectifier circuit 11211 includes a first RC circuit with a first resistor R1 and a fifth capacitor C5, and a first bridge rectifier. The second bridge rectifier circuit 11212 includes a second RC circuit with a second resistor R2 and a sixth capacitor C6, and a second bridge rectifier. The first and the second RC circuits both have a first and a second terminals, and the first and the second bridge rectifiers both have a first and a second input terminals. The first capacitor Cl is serially connected between the first terminal of the first RC circuit and the first input terminal of the first bridge rectifier, the second capacitor C2 is serially connected between the second terminal of the first RC circuit and the second input terminal of the first bridge rectifier, the third capacitor C3 is serially connected between the first terminal of the second RC circuit and the first input terminal of the second bridge rectifier, and the fourth capacitor C4 is serially connected between the second terminal of the second RC circuit and the second input terminal of the second bridge rectifier. When the input terminals of the voltage isolation circuit 51 are electrically connected to the electronic ballast through the first RC circuit or the second RC circuit, the voltage isolation circuit 51 is equivalent to a short-circuit without influencing the characteristics of the entire circuitry and the operations thereof because the operational frequency is quite high, and when the input terminals of the voltage isolation circuit 51 are electrically connected to the AC mains through the first RC circuit or the second RC circuit, the voltage isolation circuit 51 is equivalent to an impedance because the operational frequency is quite low, and this impedance is used to bear a voltage value difference between the outputs of the AC mains and the electronic ballast such that the LED replacement tube has the same output power under these two different inputs.
    [0041] Fig. 11 shows a schematic circuit diagram of a lamp 6 including an LED replacement tube adapted for use with an electronic ballast or an AC mains and a voltage isolation circuit 61 including four parallel RC circuits, each comprising a respective one of four capacitors C1-C4 and a respective one of four resistors R1-R4, according to the twelfth preferred embodiment of the present invention. In Fig. 11, the LED replacement tube also includes a filament simulation circuit 1221 and a fluorescent lamp tube simulation circuit 422. The filament simulation circuit 1221 includes a first bridge rectifier circuit 12211 having a combination of resistor and capacitor connected in parallel with two input terminals thereof, and a second bridge rectifier circuit 12212 having a combination of resistor and capacitor connected in parallel with two input terminals thereof. The first bridge rectifier circuit 12211 includes a first RC circuit with a fifth resistor R5 and a fifth capacitor C5, and a first bridge rectifier. The second bridge rectifier circuit 12212 includes a second RC circuit with a sixth resistor R6 and a sixth capacitor C6, and a second bridge rectifier. The first and the second RC circuits both have a first and a second terminals, and the first and the second bridge rectifiers both have a first and a second input terminals. The parallel connected first capacitor Cl and first resistor R1 are electrically connected between the first terminal of the first RC circuit and the first input terminal of the first bridge rectifier, the parallel connected second capacitor C2 and second resistor R2 are electrically connected between the second terminal of the first RC circuit and the second input terminal of the first bridge rectifier, the parallel connected third capacitor C3 and third resistor R3 are electrically connected between the first terminal of the second RC circuit and the first input terminal of the second bridge rectifier, and the parallel connected fourth capacitor C4 and fourth resistor R4 are electrically connected between the second terminal of the second RC circuit and the second input terminal of the second bridge rectifier. When the input terminals of the voltage isolation circuit 61 are electrically connected to the electronic ballast through the first RC circuit or the second RC circuit, the voltage isolation circuit 61 is equivalent to a short-circuit without influencing the characteristics of the entire circuitry and the operations thereof because the operational frequency is quite high, and when the input terminals of the voltage isolation circuit 61 are electrically connected to the AC mains through the first RC circuit or the second RC circuit, the voltage isolation circuit 61 is equivalent to an impedance because the operational frequency is quite low, and this impedance is used to bear a difference in value between the first output voltage of the AC mains and the second output voltage of the electronic ballast such that the LED replacement tube has the same output power under these two different inputs.
    [0042] Embodiments: [0043] 1. An LED tube adapted for use with an electronic ballast, comprising: a filament simulation circuit including: a first rectifier circuit having at least one of a first instance of two fast diodes and a second instance of two super fast diodes; and a second rectifier circuit having at least one of a first instance of two fast diodes and a second instance of two super fast diodes, wherein the electronic ballast includes a first lamp tube connector with a first terminal and a second terminal, and a second lamp tube connector with a third terminal and a fourth terminal, the first rectifier circuit is electrically connected to the first and the second terminals and the second rectifier circuit is electrically connected to the third and the fourth terminals .
    [0044] 2. The LED tube according to Embodiment 1, wherein the first and the second rectifier circuits are a first and a second bridge rectifier circuits respectively, and each of the first and the second bridge rectifier circuits has one of a first instance of four fast diodes and a second instance of four super fast diodes.
    [0045] 3. The LED tube according to Embodiment 1 or 2, further comprising a fluorescent lamp tube simulation circuit, wherein the filament simulation circuit further includes a first resistor having a resistance less than 5ΚΩ and a second resistor having a resistance less than 5ΚΩ, the first and the second bridge rectifier circuits both include two input terminals and a first and a second output terminals, the first resistor is electrically connected to the two input terminals of the first bridge rectifier circuit in parallel, the second resistor is electrically connected to the two input terminals of the second bridge rectifier circuit in parallel, the fluorescent lamp tube simulation circuit includes a first and a second terminals, the first output terminals of the first and the second bridge rectifier circuits are electrically connected to the first terminal of the fluorescent lamp tube simulation circuit, and the second output terminals of the first and the second bridge rectifier circuits are electrically connected to the second terminal of the fluorescent lamp tube simulation circuit.
    [0046] 4. The LED tube according to any one of the above-mentioned Embodiments, wherein the filament simulation circuit further includes a first capacitor having a capacitance larger than lOpF, and a second capacitor having a capacitance larger than lOpF, the first and the second bridge rectifier circuits both include two input terminals, the first capacitor is electrically connected to the two input terminals of the first bridge rectifier circuit in parallel, and the second capacitor is electrically connected to the two input terminals of the second bridge rectifier circuit in parallel.
    [0047] 5. The LED tube according to any one of the above-mentioned Embodiments, wherein the filament simulation circuit further includes a first resistor having a resistance less than 5ΚΩ, a second resistor having a resistance less than 5ΚΩ, a first capacitor having a capacitance larger than lOpF, and a second capacitor having a capacitance larger than lOpF, the first and the second bridge rectifier circuits both include two input terminals, the first resistor and the first capacitor are electrically connected to the two input terminals of the first bridge rectifier circuit in parallel, and the second resistor and the second capacitor are electrically connected to the two input terminals of the second bridge rectifier circuit in parallel.
    [0048] 6. The LED tube according to any one of the above-mentioned Embodiments, further comprising a fluorescent lamp tube simulation circuit with a plurality of LEDs, each of which is electrically connected to one another in one of two states being in series and in parallel, wherein the filament simulation circuit further includes a first to a fourth resistors and a first and a second capacitors, the first and the second rectifier circuits both have two input terminals, the first resistor and the first capacitor are electrically connected in series, the second resistor and the serially connected first resistor and first capacitor are electrically connected between the two input terminals of the first rectifier circuit in parallel, the third resistor and the second capacitor are electrically connected in series, and the fourth resistor and the serially connected third resistor and second capacitor are electrically connected between the two input terminals of the second rectifier circuit in parallel.
    [0049] 7. The LED tube according to any one of the above-mentioned Embodiments, further comprising a fluorescent lamp tube simulation circuit and a voltage isolation circuit with a first to a fourth capacitors, wherein the filament simulation circuit further includes a first and a second RC circuits, the first and the second RC circuits both have a first and a second terminals, the first and the second rectifier circuits both have a first and a second input terminals, the first capacitor is electrically connected between the first terminal of the first RC circuit and the first input terminal of the first rectifier circuit in series, the second capacitor is electrically connected between the second terminal of the first RC circuit and the second input terminal of the first rectifier circuit in series, the third capacitor is electrically connected between the first terminal of the second RC circuit and the first input terminal of the second rectifier circuit in series, the fourth capacitor is electrically connected between the second terminal of the second RC circuit and the second input terminal of the second rectifier circuit in series, one of the electronic ballast and the filament simulation circuit is electrically connected to AC mains generating a first output voltage, the electronic ballast generates a second output voltage, the first and the second terminals of the first RC circuit are electrically connected to the first and the second terminals of the first lamp tube connector respectively, the first and the second terminals of the second RC circuit are electrically connected to the third and the fourth terminals of the second lamp tube connector respectively, when the electronic ballast receives the first output voltage, the first and the second lamp tube connectors receive the second output voltage, and when the filament simulation circuit receives the first output voltage, the first and the second lamp tube connectors are electrically connected to the AC mains, and the voltage isolation circuit is used to bear a difference in value between the first output voltage and the second output voltage.
    [0050] 8. The LED tube according to any one of the above-mentioned Embodiments, wherein the voltage isolation circuit further includes a first to a fourth resistors electrically connected to the first to the fourth capacitors in parallel respectively, each of the first to the fourth resistors is a charging resistor, the first RC circuit includes a fifth resistor and a fifth capacitor, and the second RC circuit includes a sixth resistor and a sixth capacitor.
    [0051] 9. The LED tube according to any one of the above-mentioned Embodiments, wherein the first and the second rectifier circuits are a first dual-diode circuit with a first and a second diodes, and a second dual-diode circuit with a third and a fourth diodes respectively, each of the first to the fourth diodes has an anode and a cathode, the anode of the first diode, the cathode of the second diode, the first terminal and the second terminal are electrically connected, and the anode of the third diode, the cathode of the fourth diode, the third terminal and the fourth terminal are electrically connected.
    [0052] 10. The LED tube according to any one of the above-mentioned Embodiments, further comprising a fluorescent lamp tube simulation circuit with a first terminal and a second terminal, wherein the cathodes of the first and the third diodes are electrically connected to the first terminal of the fluorescent lamp tube simulation circuit, and the anodes of the second and the fourth diodes are electrically connected to the second terminal of the fluorescent lamp tube simulation circuit.
    [0053] 11. An LED tube adapted for use with an electronic ballast, comprising: a filament simulation circuit electrically connected to one of the electronic ballast and AC mains; a voltage isolation circuit electrically connected to the filament simulation circuit; and a fluorescent lamp tube simulation circuit electrically connected to the filament simulation circuit and including a lamp tube voltage simulation circuit.
    [0054] 12. The LED tube according to
    Embodiment 11, wherein the fluorescent lamp tube simulation circuit further includes a plurality of LEDs, the lamp tube voltage simulation circuit is electrically connected to the plurality of LEDs in series, each of the plurality of LEDs is electrically connected to one another in one of two states being in series and in parallel, the lamp tube voltage simulation circuit is one of a thyristor element and a semiconductor switch element, and the lamp tube voltage simulation circuit is one selected from a group consisting of a DIAC, an SUS, an SIDAC, an SBS, an ASBS, an SAS, a Zener, an SCR, a TRIAC, a MOSFET, and a BJT.
    [0055] 13. The LED tube according to
    Embodiment 11 or 12, wherein the filament simulation circuit and the fluorescent lamp tube simulation circuit form a simulation circuit, the electronic ballast operates under a specific operation mode, and the simulation circuit responds to the specific operation mode.
    [0056] 14. The LED tube according to any one of the above-mentioned Embodiments, wherein the specific operation mode includes a resistance detection mode used to detect a resistance of a filament of a fluorescent lamp tube, and a lamp tube voltage detection mode used to detect a lamp tube voltage of the fluorescent lamp tube, the plurality of LEDs are electrically connected to one another in one of two states being in series and in parallel, the filament simulation circuit is used to provide a simulation datum of the resistance of the filament to respond to the resistance detection mode so as to present a first status showing that the resistance of the filament is normal, the fluorescent lamp tube simulation circuit uses the plurality of LEDs to provide a stable lamp tube voltage, and uses the lamp tube voltage simulation circuit to provide a starting high voltage for the lamp tube so as to respond to the lamp tube voltage detection mode accordingly to present a second status showing that the lamp tube voltage is normal such that the electronic ballast and the LED tube are both operating normally.
    [0057] 15. A controlling method for an LED tube adapted for use with one of an electronic ballast and AC mains, wherein the electronic ballast includes a resistance detection mode and a lamp tube voltage detection mode, the method comprising: providing an output voltage from the one of the electronic ballast and the AC mains to the LED tube; simulating a resistance of a filament of a fluorescent lamp tube in response to the resistance detection mode; in response to the lamp tube voltage detection mode, providing a stable lamp tube voltage; and determining whether the LED tube is operating normally based on the simulated resistance and the stable lamp voltage.
    [0058] 16. The controlling method according to
    Embodiment 15, wherein the LED tube includes a filament simulation circuit, and a fluorescent lamp tube simulation circuit having a lamp tube voltage simulation circuit and a plurality of LEDs electrically connected to one another in one of two states being in series and in parallel, further comprising: causing the filament simulation circuit to provide the simulated resistance and to respond to the resistance detection mode to present a first status showing that the resistance of the filament is normal; causing the fluorescent lamp tube simulation circuit to use the plurality of LEDs to provide the stable lamp tube voltage; causing the lamp tube voltage simulation circuit to provide a starting high voltage for the lamp tube; and responding to the lamp tube voltage detection mode according to the stable lamp tube voltage and the starting high voltage for the lamp tube so as to present a second status showing that a lamp tube voltage is normal such that the electronic ballast and the LED tube are both operating normally.
    [0059] 17. The controlling method according to Embodiment 15 or 16, wherein the LED tube includes a fluorescent lamp tube simulation circuit having a lamp tube voltage simulation circuit and a plurality of LEDs electrically connected to one another in one of two states being in series and in parallel, further comprising: causing the filament simulation circuit to provide the simulated resistance and to respond to the resistance detection mode accordingly so as to present a first status showing that the resistance of the filament is normal; causing the fluorescent lamp tube simulation circuit to use the plurality of LEDs to provide the stable lamp tube voltage; and responding to the lamp tube voltage detection mode according to the stable lamp tube voltage so as to present a second status showing that a lamp tube voltage is normal such that electronic ballast and the LED tube are both operating normally.
    [0060] 18. A controlling method for an LED tube adapted for use with an electronic ballast, wherein the electronic ballast includes a resistance detection mode and a lamp tube voltage detection mode, the method comprising: providing a simulation datum of a resistance of a filament of a fluorescent lamp tube in response to the resistance detection mode so as to present a first status showing that the resistance of the filament is normal; providing a stable lamp tube voltage; and in response to the lamp tube voltage detection mode based on the stable lamp tube voltage, presenting a second status showing that a lamp tube voltage is normal such that the LED tube operates normally.
    [0061] According to the descriptions above, the present invention discloses an LED tube for use with an electronic ballast or AC mains to replace a fluorescent lamp tube with a basic configuration using the characteristics of the electronic ballast adapted for use with a dual-fast bridge rectifier without changing the circuitry, wherein the LED tube includes a filament simulation circuit and a fluorescent lamp tube simulation circuit, the filament simulation circuit comprises the basic configuration, a capacitor connected to the basic configuration in parallel, a resistor connected to the basic configuration in parallel, the capacitor and the resistor both connected to the basic configuration in parallel, or a combination of a capacitor and two resistors connected to the basic configuration in parallel, and the fluorescent lamp tube simulation circuit comprises LEDs, or LEDs adapted for use with a tube voltage simulation circuit so as to respond to the filament detection scheme and the tube voltage detection scheme within the electronic ballast.
    [0062] While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiments. Therefore, it is intended to cover various modifications and similar configuration included within the spirit and scope of the appended claims, which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.
    权利要求:
    Claims (18)
    [1]
    A LED tube adapted for use with an electronic load, comprising: a wire simulation circuit comprising: a first rectifier circuit with at least one of a first step of two fast diodes and a second step of two super fast diodes; and a second rectifier circuit with at least one of a first step with two fast diodes and a second step of two super fast diodes, wherein the electronic load comprises a first lamp tube connector with a first connection point and a second connection point, and a second lamp tube connector with a third terminal and a fourth terminal, wherein the first rectifier circuit is electrically connected to the first and second terminals and the second rectifier circuit is electrically connected to the third and fourth terminals.
    [2]
    The LED tube of claim 1, wherein the first and second rectifier circuits are a first and a second bridge rectifier circuits, respectively, and each of the first and second bridge rectifier circuits is a first step of four fast diodes and a second step of four has super fast diodes.
    [3]
    The LED tube of claim 2, further comprising a fluorescent lamp tube simulation circuit, the wire simulation circuit further comprising a first resistor with a resistor less than 5ΚΩ and a second resistor with a resistor less than 5ΚΩ, the first and second bridge rectifier circuits both contain two input connection points and a first and a second output connection point, the first resistor being electrically connected in parallel to the two input connection points of the first bridge rectifier circuit, the second resistor being electrically connected in parallel to the two input connection points of the second bridge rectifier circuit, the fluorescent lamp tube simulation circuit includes a first and a second terminal, the first output terminals of the first and second bridge rectifier circuits are electrically connected to the first terminal of the fluorescent lamp tube simulation circuit, and the second output terminals of the first and t the bridge rectifier circuits are electrically connected to the second connection point of the fluorescent lamp simulation circuit.
    [4]
    The LED tube of claim 2, wherein the wire simulation circuit further comprises a first capacitor with a capacitance greater than 10pF, and a second capacitor with a capacitance greater than 10pF, the first and second bridge rectifier circuits both comprising two input terminals, the first capacitor is electrically connected in parallel to the two input connection points of the first bridge rectifier circuit, and the second capacitor is connected electrically in parallel to the two input connection points of the second bridge rectifier circuit.
    [5]
    The LED tube of claim 2, wherein the wire simulation circuit further comprises a first resistor with a resistance of less than 5ΚΩ, a second resistor with a resistance of less than 5ΚΩ, a first capacitor with a capacity greater than 10pF, and a second capacitor with capacitance greater than 10F, where the first and second bridge rectifier circuits both have two input terminals, the first resistor and the first capacitor being connected in parallel to the two input terminals of the first bridge rectifier circuit, and the second resistor and the second capacitor are connected in parallel with the two input terminals of the second bridge rectifier circuit.
    [6]
    The LED tube of claim 1, further comprising a fluorescent lamp tube simulation circuit with a plurality of LEDs, each of which is electrically connected to one another in one of two states being in series or parallel, the wire simulation circuit further comprising a first to fourth and a first and a second capacitor, the first and the second rectifier circuits both having two input terminals, the first resistor and the first capacitor being electrically connected in series, the second resistor and the first resistor connected in series and the first capacitor electrically are connected in parallel between the two input terminals of the first rectifier circuit, the third resistor and the second capacitor are electrically connected in series, and the fourth resistor and the series-connected third resistor and the second capacitor are electrically connected in parallel between the two input terminals of the second rectifier circle.
    [7]
    The LED tube of claim 1, further comprising a fluorescent lamp tube simulation circuit and a voltage isolation circuit with a first to a fourth capacitor, the wire simulation circuit further comprising a first and a second RC circuit, the first and the second RC circuit both have a first and a second terminal, the first and the second rectifier circuits both having a first and a second input terminal, the first capacitor being electrically connected in series between the first terminal of the first RC circuit and the first input terminal of the first rectifier circuit, the second capacitor is electrically connected in series between the second connection point of the first RC circuit and the second input connection point of the first rectifier circuit, the third capacitor is electrically connected in series between the first connection point of the second RC circuit and the first input connection point of the second rectifier circuit, the vie the capacitor is electrically connected in series between the second terminal of the second RC circuit and the second input terminal of the second rectifier circuit, one of the electronic load and the wire simulation circuit is electrically connected to the AC network for generating a first output voltage , the electronic load generates a second output voltage, the first and second terminals of the first RC circuit are electrically connected to the first and second terminals of the first lamp tube connector, respectively, the first and second terminals of the second RC circuit are electrically connected to the third and fourth terminals of the second lamp tube connector, respectively, when the electronic load receives the output voltage, the first and second lamp tube connectors receive the second output voltage, and when the wire simulation circuit receives the first output voltage, the first and the second lamp tube connectors electr isch connected to the AC network, and wherein the voltage isolation circuit is used to carry a difference in value between the first output voltage and the second output voltage.
    [8]
    The LED tube of claim 7, wherein the voltage isolation circuit further comprises a first to a fourth resistor electrically connected in parallel to the first to the fourth capacitor, respectively, each of the first to the fourth resistors being a charging resistor, the first RC circuit includes a fifth resistor and a fifth capacitor, and the second RC circuit contains a sixth resistor and a sixth capacitor.
    [9]
    The LED tube of claim 1, wherein the first and the second rectifier circuits are respectively a first double diode circuit with a first and a second diode, and a second double diode circuit with a third and a fourth diode, each of the first until the fourth diode has an anode and a cathode, wherein the anode of the first diode, the cathode of the second diode, the first terminal and the second terminal are electrically connected, and wherein the anode of the third diode, the cathode of the The fourth diode, the third terminal and the fourth terminal are electrically connected.
    [10]
    The LED tube of claim 9, further comprising a fluorescent lamp tube simulation circuit with a first terminal and a second terminal, the cathodes of the first and third diodes being electrically connected to the first terminal of the fluorescent lamp pipe simulation circuit, and the anodes of the second and fourth diodes are electrically connected to the second terminal of the fluorescent lamp tube simulation circuit.
    [11]
    11. LED tube adapted for use with an electronic load, comprising: a wire simulation circuit that is electrically connected to one of the electronic load and an AC network; a voltage isolation circuit electrically connected to the wire simulation circuit; and a fluorescent lamp tube simulation circuit which is electrically connected to the wire simulation circuit and which contains a lamp tube voltage simulation circuit.
    [12]
    The LED tube of claim 11, wherein the fluorescent lamp tube simulation circuit further comprises a plurality of LEDs, the lamp tube voltage simulation circuit being electrically connected in series to the plurality of LEDs, each of the plurality of LEDs being electrically connected to each other in one of two states being in series and parallel, wherein the lamp tube voltage simulation circuit is one of a thyristor element and a semiconductor switching element, and the lamp tube voltage simulation circuit one is selected from a group consisting of a DIAC, a SUS, a SIDAC, an SBS , an ASBS, a SAS, a Zener, an SCR, a TRIAC, a MOSFET, and a BJT.
    [13]
    The LED tube of claim 11, wherein the wire simulation circuit and the fluorescent lamp tube simulation circuit form a simulation circuit, wherein the electronic load operates under a specific operating mode, and the simulation circuit responds to the specific operating mode.
    [14]
    An LED tube according to claim 13, wherein the specific operating mode includes a resistance detection mode used to detect a resistance of a wire or a fluorescent lamp tube, and a lamp tube voltage detection mode used to detect a lamp tube voltage of the lamp tube, wherein the plurality of LEDs are electrically connected to one another in one of two states being in series and parallel, the wire simulation circuit being used to provide a simulation reference of the resistance of the wire to respond to the resistance detection mode such that a A first status is presented showing the resistance of the wire as normal, with the fluorescent lamp tube simulation circuit using the plurality of LEDs to provide a stable lamp tube voltage, and the lamp tube voltage simulation circuit using a starting high voltage for the lamp tube provide such that correspondingly, the lamp tube voltage detection mode is reacted to present a second status that shows that the lamp tube voltage is normal such that the electronic load and the LED tube both operate normally.
    [15]
    15. A method of controlling an LED tube adapted for use with one of an electronic load and an AC network, the electronic load comprising a resistance detection mode and a lamp tube voltage detection mode, the method comprising: providing an output voltage of one of the electronic load and the AC net on the LED tube; simulating a resistance of a wire of a fluorescent lamp tube in response to the resistance detection mode; providing a stable lamp tube voltage in response to the lamp tube voltage detection mode; and determining whether the LED tube is operating normally based on the simulated resistor and the stable lamp voltage.
    [16]
    The control method of claim 15, wherein the LED tube includes a wire simulation circuit, and a fluorescent lamp tube simulation circuit with a lamp tube voltage simulation circuit and a plurality of LEDs electrically connected to each other in one of two states being in series and in parallel, further comprising: causing the wire simulation circuit to provide the simulated resistor and respond to the resistance detection mode to display a first state showing that the wire resistance is normal; causing the fluorescent lamp tube simulation circuit to use the plurality of LEDs to provide the stable lamp tube voltage; causing the lamp tube voltage simulation circuit to provide a starting high voltage for the lamp tube; and responding to the lamp tube voltage detection mode according to the stable lamp tube voltage the starting high voltage for the lamp tube such that a second status is presented which shows that a lamp tube voltage is normal such that the electronic load and the LED tube both operate normally.
    [17]
    The control method of claim 15, wherein the LED tube includes a fluorescent lamp tube simulation circuit with a lamp tube voltage simulation circuit and a plurality of LEDs electrically connected to one another in one of two states being in series and parallel, further comprising: causing the wire simulation circuit to provide the simulated resistor and respond accordingly to the resistance detection mode such that a first state is presented that shows that the wire resistance is normal; causing the fluorescent lamp tube simulation circuit to use the plurality of LEDs to provide the stable lamp tube voltage; and responding to the lamp tube voltage detection mode according to the stable lamp tube voltage such that a second status is presented which shows that a lamp tube voltage is normal such that the electronic load and the LED tube both operate normally.
    [18]
    A control method for an LED tube adapted for use with an electronic load, the electronic load further comprising a resistance detection mode and a lamp tube voltage detection mode, the method comprising: providing a simulation reference of a resistor of a wire from a fluorescent lamp tube in response to the resistance detection mode to present a first state showing that the wire resistance is normal; providing a stable lamp tube voltage; and responsive to the lamp tube voltage detection mode based on the stable lamp tube voltage, displaying a second state showing that a lamp tube voltage is normal such that the LED tube operates normally. -o-o-o-o-o-o-o-
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    同族专利:
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    TW201626856A|2016-07-16|
    DE102016000111A1|2016-07-14|
    NL2016063B1|2017-08-04|
    引用文献:
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    CN202721866U|2012-06-15|2013-02-06|深圳市宝瑞恒业科技有限公司|New type driving circuit which is compatible with LED lamp tube|
    EP3481152B1|2016-08-03|2021-04-28|Opple Lighting Co., Ltd.|Led lamp and led illuminating system|
    法律状态:
    2019-09-04| MM| Lapsed because of non-payment of the annual fee|Effective date: 20190201 |
    优先权:
    申请号 | 申请日 | 专利标题
    TW104100586|2015-01-08|
    TW104138841A|TW201626856A|2015-01-08|2015-11-23|LED tube adapted for use with electronic ballast or AC mains and controlling method thereof|
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