WO2019019080A1 - A universal led lamp bulb and module - Google Patents

Abstract

A universal LED lamp bulb, comprising: a metal lamp foot (102), an automatic frequency division network (201), a high frequency driver (202), a low frequency driver (203), an isolating circuit (204) and an LED lamp group (205). The universal LED lamp bulb is versatile and safe.

Description

 Universal LED tube and its module Technical field

The invention relates to the field of LEDs, in particular to a general-purpose LED lamp tube and a module thereof.

Background technique

Direct replacement of fluorescent tubes on traditional fluorescent lighting fixtures with LED tubes can achieve significant results in energy saving and emission reduction, improved light efficiency, improved light environment, and reduced retrofit costs.

However, because the ballasts on traditional fluorescent lamps usually have two types of magnetic ballasts or electronic ballasts, the working principle, circuit wiring and output voltage and current are completely different, especially the output voltage and current frequency. The difference is huge, the voltage of the general inductance ballast output, the current is 50/60Hz power frequency, and the electronic ballast outputs the high frequency voltage and current of 25KHz-80KHz.

According to the different ballasts on the traditional fluorescent lamps, the existing LED tubes designed and manufactured are respectively inductive compatible or electronically compatible.

In the actual direct replacement operation, in addition to the professional electrician, it is difficult for the user to distinguish the difference between the two. If it is accidentally mixed, the LED tube is damaged, and the fire and personal safety accident are caused by the accident.

Due to the lack of versatility of the existing LED tube, it cannot be a commodity in circulation, which greatly restricts the application field and promotion speed and scope of his energy-saving transformation.

technical problem

The application provides a universal LED tube and a module thereof. The invention solves the problem that the technical solutions of the prior art cannot be universal and has low security.

Technical solution

In one aspect, a general-purpose LED lamp tube is provided, the general-purpose LED lamp tube comprising:

Metal lamp foot, automatic crossover network, high frequency driver, low frequency driver, isolation circuit and LED light group;

The two ports of the metal lamp pin are respectively connected with the two input ends of the automatic frequency dividing network, the output end of the automatic frequency dividing network A is connected to the positive input end of the high frequency driver, and the B output end is connected to the negative input end of the high frequency driver, C The output terminal is connected to the positive input terminal of the low frequency driver, and the D output terminal is connected to the negative input terminal of the low frequency driver;

The output end of the high frequency driver and the output end of the low frequency driver are connected to the input end of the isolation circuit, and the output ends of the isolation circuit are respectively connected to the positive pole and the negative pole of the LED light group;

The automatic frequency division network is configured to output the high frequency power supply through the A output end and the B output end when the input end is a high frequency power supply, and when the input end is a commercial frequency power supply, the power frequency power supply is passed through the C. Output and D output output.

Optionally, the universal LED tube comprises: a fuse connected between the metal lamp foot and the automatic frequency division network.

Optionally, the automatic frequency division network includes: a varistor, a capacitor, an inductor, and a triac; wherein

Two pairs of metal lamp pins are respectively respectively connected to the upper end and the lower end of the varistor via the fuse, and the upper end of the varistor is connected to the first inductor, the first capacitor, the first triac and one end of the first resistor, The lower end of the varistor is connected to one end of the second inductor, the second capacitor, the second thyristor and the second resistor; the other end of the first capacitor is connected to the trigger pole of the first thyristor, The other end of the second capacitor is connected to the trigger pole of the second triac;

The other end of the first thyristor is connected to the other end of the first resistor and one end of the third resistor and the fourth capacitor, and the other end of the third resistor and the fourth The other end of the capacitor is connected in parallel to the A output end of the automatic frequency division network;

The other end of the second thyristor is connected to the other end of the second resistor and one end of the fourth resistor and the fifth capacitor, and the other end of the fourth resistor and the other end of the fifth capacitor After being connected in parallel, it is the B output end of the automatic frequency division network;

The other end of the first inductor is connected to one end of the third capacitor and is the C output end of the automatic frequency division network;

The other end of the second inductor is connected to the other end of the third capacitor and is the D output end of the automatic frequency division network.

Optionally, the isolation circuit includes a first diode and a second diode; wherein

The anode of the first diode is connected to the positive output end of the high frequency driver, the cathode of the first diode is connected to the positive pole of the LED light group, and the negative pole of the LED light group is connected to the negative output end of the high frequency driver;

The anode of the second diode is connected to the positive output of the low frequency driver, the cathode of the second diode is connected to the positive pole of the LED light group, and the negative pole of the LED light group is connected to the negative output of the low frequency driver.

Beneficial effect

The technical solution provided by the invention has the advantages of being able to realize two different ballasts, has strong versatility and high safety.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1a is a schematic diagram of an inductor ballast circuit of a conventional fluorescent lamp;

He 1b is a circuit diagram of an electronic ballast of an existing fluorescent lamp;

2 is a schematic block diagram of a general-purpose LED lamp provided by an embodiment of the present invention.

FIG. 3 is an electrical schematic diagram of an embodiment of the present invention.

4 is a schematic structural view of an embodiment of the present invention.

FIG. 5c is a circuit diagram of a direct replacement of an inductor ballast for driving a fluorescent tube according to an embodiment of the present invention.

FIG. 5d is a circuit diagram of a direct replacement of an electronic ballast to drive a fluorescent tube according to an embodiment of the present invention.

Figure 5e is a circuit diagram of direct commercial power in accordance with an embodiment of the present invention.

Embodiments of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

1a is a wiring diagram of a conventional inductive ballast fluorescent lamp lighting fixture, K is a power switch, L is an inductive ballast, and further includes: a lamp holder 101, a lamp metal lamp foot 102, a lamp cap 103, Qihui S, fluorescent tube FL, mains line L and zero line N.

Refer to Figure 1b for the wiring diagram of a conventional electronic ballast fluorescent lamp luminaire, in which an electronic ballast (E.

B) 104.

2 is an electrical schematic block diagram of the present invention. In FIG. 2, the lamp metal lamp foot 102 introduces an AC 50/60 Hz power frequency or a 25 KHz-80 KHz high frequency power supply on the lamp holder 101 to the automatic frequency division network 201 via a fuse FS (G). /D), when the introduced power supply signal is high frequency, the automatic frequency dividing network 201 outputs the high frequency power supply to the high frequency driver 202 via both ends A and B, and converts the high frequency alternating current into a direct current through the isolation circuit 204, The LED lamp group 205 that drives the lamp operates, and at this time, no current is introduced across the low frequency drivers 203C and D.

When the power supply source introduced by the lamp foot 102 is a power frequency, the automatic frequency division network 201 outputs the power frequency power supply to the low frequency driver 203 through both ends of C and D, and converts the power frequency alternating current into direct current to drive the lamp through the isolation circuit 204. The LED lamp group 205 operates, and at this time, no current is introduced at both ends of the high frequency driver 202 at A and B.

3 is an electrical schematic diagram of an embodiment of the present invention. The electrical ballast or the electronic ballast of the two lamp holders 101 on the lamp output electrical signals, and the two pairs of metal lamp pins 102 on the two lamp caps 103 are respectively passed through the fuse FS. The upper end of the varistor Rv is connected to the inductor L1, the capacitor C1, the bidirectional thyristor Q1 and the end of the resistor R1, and the lower end of the varistor Rv is connected to the inductor L2 and the capacitor C2. One end of the thyristor Q2 and the resistor R2 are connected. The other ends of the capacitors C1 and C2 are respectively connected to the trigger poles of the triacs Q1 and Q2.

The other end of the triac Q1 is connected to the other end of the resistor R1 and one end of the resistor R3 and the capacitor C4, and the other end of the resistor R3 is connected in parallel with the other end of the capacitor C4 to turn on the A output end of the automatic frequency division network 201.

The other end of the triac Q2 is connected to the other end of the resistor R2 and one end of the resistor R4 and the capacitor C5. The other end of the resistor R4 is connected in parallel with the other end of the capacitor C5, and then the B output end of the automatic frequency division network 201 is turned on.

The other end of the inductor L1 is connected to one end of the capacitor C3 and then turned on to the C output terminal of the automatic frequency division network 201.

The other end of the inductor L2 is connected to the other end of the capacitor C3 and then turned on to the D output of the automatic frequency division network 201.

The diodes D1 and D2 constitute an isolation circuit 204 of the high frequency driver and the low frequency driver output, wherein the anode of the diode D1 is connected to the anode of the DC output of the high frequency driver 202, and the anode of the diode D2 is connected to the anode of the DC output of the low frequency driver 203, and the diode D1. The negative poles of D2 are connected together to form a positive pole of the DC power supply of the LED light group 205, and the high frequency driver is connected with the negative pole of the DC output of the low frequency driver to form a negative pole of the DC power supply of the LED light group 205.

When the electrical signal at the two ends of the varistor Rv in the frequency division network 201 is a high frequency of 25 kHz to 80 kHz, the trigger poles of the thyristors Q1 and Q2 will obtain a trigger current through the capacitors C1 and C2, thereby effectively turning on, Q1. After Q2 is turned on, the 25KHz-80KHz high-frequency electric signal at both ends of the varistor Rv is output to the A and B terminals of the automatic frequency division network 201 via R3, C4 and R4, C5 for rectification and filtering by the high frequency driver 202. Circuit 204 drives LED light set 205 to operate. At this time, the inductor L1 and the inductor L2 will form a large inductive reactance to the high frequency electrical signal of 25 kHz to 80 kHz across the varistor Rv, and thus the low frequency driver 203 has no current introduction.

When the electrical signal at the varistor Rv in the automatic frequency division network 201 is 50/60 Hz, the low frequency electrical signal is transmitted to the C and D terminals of the automatic frequency division network 201 through the inductor L1 and the inductor L2 for the low frequency driver. After 202 rectification filtering and pulse width modulation constant current, the LED lamp group 205 is driven by the isolation circuit 204. At this time, the capacitors C1 and C2 form a large capacitive reactance to the power frequency, and thus the triacs Q1 and Q2 have no trigger current at the cutoff end. In the state, the high frequency driver 202 has no current to be introduced.

Since the present invention internally sets the automatic frequency division network 201 and the high frequency driver 202, the low frequency driver 203, the isolation circuit 204 and the LED light group 205, thereby directly replacing the traditional fluorescent lamp electronic ballast and the magnetic ballast lamp The fluorescent tube can also directly connect to the purpose of normal operation of the mains.

4 is a schematic structural view of an embodiment of the present invention, which includes two plastic lamp caps 401, LED lamp beads 403, glass or plastic lamp tubes 404, LED light bar plates 405 and fuses, automatic frequency division network 201, high frequency driver 202, low frequency. The driver 203 and the isolation circuit 204 are respectively mounted on the circuit boards 402 at both ends, and the circuit boards at both ends are respectively inserted into the metal lamp pins 102 of the two plastic lamp caps 401 through the copper pin pins 406.

Figure 5c is a circuit diagram of a fluorescent tube driven by a direct replacement of an inductive ballast, in which the starter S on the original luminaire should be removed from the starter holder.

Figure 5d is a circuit diagram of a fluorescent tube driven by a direct replacement electronic ballast.

Figure 5e is a circuit diagram of direct switching on AC 100-277V 50/60Hz mains.

It should be noted that, for the foregoing various method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In the following, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not described in detail in a certain embodiment can be referred to the related descriptions of other embodiments.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium, and the storage medium may include: Flash drive, read-only memory (English: Read-Only Memory, referred to as: ROM), random accessor (English: Random Access Memory, referred to as: RAM), disk or CD.

The content downloading method and the related device and system provided by the embodiments of the present invention are described in detail above. The principles and implementation manners of the present invention are described in the specific examples. The description of the above embodiments is only used to help understand the present invention. The method of the invention and its core idea; at the same time, for the person of ordinary skill in the art, according to the idea of the present invention, there are some changes in the specific embodiment and the scope of application. In summary, the content of the specification should not be understood. To limit the invention.

Claims (4)

 A general-purpose LED lamp tube, characterized in that the universal LED lamp tube comprises: Metal lamp foot, automatic crossover network, high frequency driver, low frequency driver, isolation circuit and LED light group; The two ports of the metal lamp pin are respectively connected with the two input ends of the automatic frequency dividing network, the output end of the automatic frequency dividing network A is connected to the positive input end of the high frequency driver, and the B output end is connected to the negative input end of the high frequency driver, C The output terminal is connected to the positive input terminal of the low frequency driver, and the D output terminal is connected to the negative input terminal of the low frequency driver; The output end of the high frequency driver and the output end of the low frequency driver are connected to the input end of the isolation circuit, and the output ends of the isolation circuit are respectively connected to the positive pole and the negative pole of the LED light group; The automatic frequency division network is configured to output the high frequency power supply through the A output end and the B output end when the input end is a high frequency power supply, and when the input end is a commercial frequency power supply, the power frequency power supply is passed through the C. Output and D output output. The universal LED lamp of claim 1 wherein said universal LED lamp comprises: a fuse connected between said metal lamp foot and an automatic crossover network. A general-purpose LED lamp according to claim 2, wherein The automatic frequency division network includes: a varistor, a capacitor, an inductor, and a triac; wherein Two pairs of metal lamp pins are respectively respectively connected to the upper end and the lower end of the varistor via the fuse, and the upper end of the varistor is connected to the first inductor, the first capacitor, the first triac and one end of the first resistor, The lower end of the varistor is connected to one end of the second inductor, the second capacitor, the second thyristor and the second resistor; the other end of the first capacitor is connected to the trigger pole of the first thyristor, The other end of the second capacitor is connected to the trigger pole of the second triac; The other end of the first thyristor is connected to the other end of the first resistor and one end of the third resistor and the fourth capacitor, and the other end of the third resistor and the fourth The other end of the capacitor is connected in parallel to the A output end of the automatic frequency division network; The other end of the second thyristor is connected to the other end of the second resistor and one end of the fourth resistor and the fifth capacitor, and the other end of the fourth resistor and the other end of the fifth capacitor After being connected in parallel, it is the B output end of the automatic frequency division network; The other end of the first inductor is connected to one end of the third capacitor and is the C output end of the automatic frequency division network; The other end of the second inductor is connected to the other end of the third capacitor and is the D output end of the automatic frequency division network. A general-purpose LED lamp according to claim 3, wherein said isolation circuit comprises a first diode and a second diode; The anode of the first diode is connected to the positive output end of the high frequency driver, the cathode of the first diode is connected to the positive pole of the LED light group, and the negative pole of the LED light group is connected to the negative output end of the high frequency driver; The anode of the second diode is connected to the positive output of the low frequency driver, the cathode of the second diode is connected to the positive pole of the LED light group, and the negative pole of the LED light group is connected to the negative output of the low frequency driver.