Lamp control circuit with emergency power supply

Abstract

The utility model provides a lamp control circuit with an emergency power supply, and belongs to the technical field of lamps. The utility model solves the problem that the conventional lamp cannot normally illuminate when the power is cut off, so that inconvenience is brought to people. The lamp control circuit with the emergency power supply comprises a null line interface N, a live wire interface L, a power supply input module, an MOS tube Q1, a voltage reduction module, a power control module, the emergency power supply, a power supply output module used for being connected with a lamp bead and a signal input module, and the null line interface N, the live wire interface L and the emergency power supply are all connected with the power supply input module. The voltage reduction module is respectively connected with the power input module and the power output module, the power control module is respectively connected with the power input module, the signal input module and a first pin of the MOS tube Q1, the voltage reduction module is connected with a second pin of the MOS tube Q1, and a third pin of the MOS tube Q1 is grounded after being connected with a resistor RS5. According to the utility model, the lamp can still illuminate normally when the mains supply is abnormal.

Description

Technical Field

[0001] The utility model belongs to the technical field of lamps and relates to a lamp control circuit with an emergency power supply. Background Art

[0002] Compared with traditional lighting products, LED lighting products have the advantages of high luminous efficiency, low energy consumption and long life. They are currently becoming more and more widely used lighting products.

[0003] At present, LED lighting fixtures are all powered by the mains. The LED lamps have a live wire access terminal and a neutral wire access terminal, which are connected to the live and neutral wires of the mains through a socket switch. When the socket switch is closed, the voltage between the live wire access terminal and the neutral wire access terminal of the lamp is the same as the voltage of the mains, and the LED lamp lights up at this time. When the socket switch is disconnected, the voltage between the live wire access terminal and the neutral wire access terminal is zero, and the LED lamp does not light up at this time. At present, LED lighting fixtures rely on the mains to work. When the mains power supply is abnormal or there is a power outage, the LED lighting fixtures cannot illuminate normally, which will cause certain inconveniences to people's lives. Summary of the invention

[0004] The utility model aims to solve the above problems in the prior art and proposes a lamp control circuit with an emergency power supply. The technical problem to be solved is: how to ensure that the lamp can still illuminate normally when the mains power is abnormal.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a lamp control circuit with an emergency power supply, comprising a neutral line interface N, a live line interface L and a power input module for rectifying and filtering alternating current, the neutral line interface N and the live line interface L are both connected to the power input module, the lamp control circuit also includes a MOS tube Q1, a step-down module for stepping down the voltage input by the power input module, a power control module for regulating the voltage output by the step-down module, an emergency power supply for providing electric energy when the mains power is abnormal, a power output module for connecting to lamp beads, and a signal input module for supplementing electric energy to the emergency power supply and transmitting a dimming signal, the emergency power supply is connected to the power input module, the step-down module is respectively connected to the power input module and the power output module, the power control module is respectively connected to the power input module and the signal input module, the power control module is connected to pin 1 of the MOS tube Q1, the step-down module is connected to pin 2 of the MOS tube Q1, and pin 3 of the MOS tube Q1 is grounded after being connected to a resistor RS5.

[0006] When the lamp control circuit with emergency power supply is used, it is connected to the neutral and live wires of the mains through the neutral wire interface N and the live wire interface L respectively. When the mains is supplying power normally, the mains transmits voltage to the step-down module after rectification and filtering through the power input module, and provides power supply energy to the power control module at the same time. The power control module starts, thereby controlling the MOS tube Q1 to be turned on. After the MOS tube Q1 is turned on, the step-down module outputs the stepped-down voltage to the power output module under the action of the MOS tube Q1, and then provides working power for lighting the lamp beads after rectification and filtering through the power output module. When the lamp beads are lit, the power control module outputs voltage to supplement the emergency power supply through the signal input module. When the mains is abnormal, the emergency power supply works, and the signal input module transmits a dimming signal to the emergency power supply, so that the emergency power supply can adapt to the power of the lamp beads and can drive the lamp beads to light up. When the emergency power supply is working, the working line is the same as that of the mains power. The AC power output by the emergency power supply is processed by the power input module, the step-down module and the power output module, and then outputs the electrical energy for lighting the lamp beads, ensuring that the lamp can still illuminate normally when there is a power outage or the mains power is abnormal, thereby improving the comfort of using the lamp.

[0007] In the above-mentioned lamp control circuit with emergency power supply, the step-down module includes a transformer TR1, a resistor R5, a resistor R6, a resistor R7, a capacitor C2, a diode D2, a diode D3 and a diode D4. Pin 1 of the transformer TR1 is respectively connected to the power input module, one end of the resistor R5, one end of the resistor R6, one end of the resistor R7 and one end of the capacitor C2. Pin 3 of the transformer TR1 is respectively connected to pin 2 of the MOS tube Q1 and the positive electrode of the diode D2. The cathode of the diode D2 is respectively connected to the other end of the resistor R5, the other end of the resistor R6, the resistor R7 through the resistor R10. The other end of the transformer TR1 is connected to the other end of the capacitor C2, the 5th pin of the transformer TR1 is connected to the power control module, the 5th pin of the transformer TR1 is also connected to the positive electrode of the diode D3 through the resistor R8, the negative electrode of the diode D3 is connected to the positive electrode of the diode D4, the negative electrode of the diode D4 is connected to the power control module, the negative electrode of the diode D3 is also connected to the 6th pin of the transformer TR1 through the capacitor C3, the negative electrode of the diode D3 is also connected to the positive electrode of the capacitor CE5, the negative electrode of the capacitor CE5 is connected to the 6th pin of the transformer TR1 and then grounded, and the 11th and 12th pins of the transformer TR1 are respectively connected to the power output module. When the MOS tube Q1 is turned on, the windings at the 1st and 3rd pins of the transformer TR1 generate an electromotive force that is positive at the bottom and negative at the top. At this time, the 5th pin of the transformer TR1 transmits voltage to the power control module, and the transformer TR1 outputs a constant voltage to the power output module at the 11th and 12th pins of the transformer TR1 through the conduction and shutdown of the MOS tube Q1, so as to provide the normal operation of the lamp beads and ensure the reliability of the lighting of the lamp.

[0008] In the above-mentioned lamp control circuit with emergency power supply, the power output module includes a diode DS1, a diode DS2, a resistor R19, a resistor R20, a capacitor CS1, a capacitor CE2, a capacitor CE3 and a resistor R21. The positive electrode of the diode DS1, the positive electrode of the diode DS2, one end of the resistor R19 and one end of the resistor R20 are all connected to the 12th pin of the transformer TR1. The negative electrode of the diode DS1 and the negative electrode of the diode DS2 are connected to one end of the capacitor CS1, the positive electrode of the capacitor CE2, the positive electrode of the capacitor CE3 and one end of the resistor R21 respectively. After the negative electrode of the diode DS1 and the negative electrode of the diode DS2 are connected, they are also connected to the positive electrode interface LED+ for connecting the positive electrode of the lamp bead. The other end of the resistor R19 is connected to the other end of the resistor R20 and then connected to the other end of the capacitor CS1. The negative electrode of the capacitor CE2, the negative electrode of the capacitor CE3 and the other end of the resistor R21 are connected to each other and then connected to the 11th pin of the transformer TR1, and are connected to the negative electrode interface LED- for connecting the negative electrode of the lamp bead. The diode DS1 and the diode DS2 are used for rectification, and the capacitor CE2 and the capacitor CE3 are used for filtering.

[0009] In the above-mentioned lamp control circuit with emergency power supply, the signal input module includes a transformer T2, a diode D6, a capacitor C8, a diode DS3, a voltage regulator ZD2, a capacitor CE4, a capacitor CS3, a resistor R29 and an interface CN3 for connecting a dimmer, and pin 2 of the transformer T2 is respectively connected to one end of the capacitor C8 and the power control module, and the other end of the capacitor C8 is grounded, pin 1 of the transformer T2 is connected to the positive electrode of the diode D6 through a resistor R30, and the negative electrode of the diode D6 is connected to the power control module, pin 3 of the transformer T2 is connected to the positive electrode of the diode DS3, and the negative electrode of the diode DS3 is respectively connected to the negative electrode of the voltage regulator ZD2, the positive electrode of the capacitor CE4, one end of the capacitor CS3 and one end of the resistor R29, and the other end of the resistor R29 is respectively connected to pin 1 of the interface CN3 and the emergency power supply, and pin 4 of the transformer T2 is respectively connected to the positive electrode of the voltage regulator ZD2, the negative electrode of the capacitor CE4, the other end of the capacitor CS3, pin 2 of the interface CN3 and the emergency power supply. The output voltage of the power control module passes through transformer T2, and then through voltage regulator ZD2 to output the voltage to the emergency power supply to store energy for the emergency power supply, so that the emergency power supply can provide sufficient working power for the lamp beads when there is no mains power, thus providing guarantee for the continued operation of the lamp beads.

[0010] In the above-mentioned lamp control circuit with emergency power supply, the power input module includes an industrial mode inductor L2, a rectifier bridge DB1, an inductor L1, a varistor VR1 and a capacitor C2. Pin 1 of the industrial mode inductor L2 is connected to the live wire interface L through a resistor wire F1, and pin 3 of the industrial mode inductor L2 is connected to the neutral wire interface N. A varistor VR1, a capacitor CX1 and resistors R3 and R4 connected in series are connected between pins 1 and 3 of the industrial mode inductor L2. The industrial mode inductor L1 is connected to the live wire interface L through a resistor wire F1. The live wire interface N is connected to the neutral wire interface N ... The 2nd foot of the power supply 2 is connected to the 3rd foot of the rectifier bridge DB1, the 4th foot of the industrial mode inductor L2 is connected to the 1st foot of the rectifier bridge DB1, the 4th foot and the 2nd foot of the rectifier bridge DB1 are connected with the capacitor C1, the 2nd foot of the rectifier bridge DB1 is respectively connected to the power control module, one end of the inductor L1 and one end of the resistor R1, the other end of the inductor L1 is connected to the other end of the resistor R1 and then connected to one end of the capacitor C2 and the step-down module, the other end of the capacitor C2 is connected to the 4th foot of the rectifier bridge DB1 and then grounded. After connecting the alternating current, the differential mode interference between the zero and live wires is filtered out by the capacitor CX1, and the common mode interference is filtered out by the common mode inductor L2, and the direct current is output after passing through the rectifier bridge DB1, and after filtering by the capacitor C1, the inductor L1 blocks the alternating current and passes the direct current, and then outputs the direct current to the step-down module.

[0011] In the above-mentioned lamp control circuit with emergency power supply, the power control module includes a power chip U1, a diode D5, a resistor R26, a resistor R11 and a resistor R12. Pin 8 of the power chip U1 is connected to the power input module through the resistors R11 and R12 connected in series. Pin 8 of the power chip U1 is also connected to the step-down module. Pin 6 of the power chip U1 is connected to the signal input module. Pin 5 of the power chip U1 is connected to the signal input module. Pin 2 of the power chip U1 is connected to the step-down module through the resistors R13 and R14 connected in series. Pin 2 of the power chip U1 is also connected to the resistor R16 and then grounded. Pin 4 of the power chip U1 is respectively connected to the cathode of the diode D5 and one end of the resistor R26. The other end of the resistor R26 is connected to pin 1 of the MOS tube Q1. The anode of the diode D5 is connected to pin 1 of the MOS tube Q1 through the resistor R27. The voltage output by the power input module is transmitted to the power chip U1 through resistors R11 and R12. When the voltage of the power chip U1 reaches the corresponding value, the power chip U1 starts, the 4th pin outputs the voltage, the MOS tube Q1 starts, and the 5th pin outputs the voltage to the signal input module.

[0012] Compared with the prior art, the lamp control circuit with emergency power supply can continue to provide working power for the lamp by the emergency power supply when the mains power is abnormal or cut off, so that the lighting fixture can still illuminate normally when the mains power is abnormal, which improves the comfort of people's lives and avoids the situation where people are in darkness and unable to move when there is no mains power. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a circuit structure schematic diagram of the utility model.

[0014] In the figure, 1. power input module; 2. power output module; 3. power control module; 4. signal input module; 5. emergency power supply; 6. step-down module. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation mode of the utility model will be further described in detail below in conjunction with the accompanying drawings. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the utility model and its application or use. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1 As shown, the lamp control circuit with emergency power supply includes a neutral line interface N, a live line interface L, a MOS tube Q1, a power input module 1 for rectifying and filtering AC power, a step-down module 6 for stepping down the voltage input by the power input module 1, a power control module 3 for regulating the voltage output by the step-down module 6, an emergency power supply 5 for providing electric energy when the mains power is abnormal, a power output module 2 for connecting to the lamp beads, and a signal input module 4 for supplementing electric energy to the emergency power supply 5 and transmitting a dimming signal. The neutral line interface N and the live line interface L are both connected to the power input module 1, the emergency power supply 5 is connected to the power input module 1, the power control module 3 is connected to pin 1 of the MOS tube Q1, the step-down module 6 is connected to pin 2 of the MOS tube Q1, and pin 3 of the MOS tube Q1 is grounded after being connected to the resistor RS5.

[0017] Among them, the power control module 3 includes a power chip U1, a diode D5, a resistor R26, a resistor R11 and a resistor R12. The 8th pin of the power chip U1 is connected to the power input module 1 through the resistors R11 and R12 connected in series. The 8th pin of the power chip U1 is also connected to the step-down module 6. The 6th pin of the power chip U1 is connected to the cathode of the diode D6 in the signal input module 4. The 2nd pin of the power chip U1 is connected to the 5th pin of the transformer TR1 in the step-down module 6 through the resistors R13 and R14 connected in series. The 2nd pin of the power chip U1 is also connected to the resistor R16 and then grounded. The 5th pin of the power chip U1 is connected to the 2nd pin of the transformer T2 in the signal input module 4. The 5th pin of the power chip U1 is also connected to the capacitor C4 and then grounded. The 1st pin of the power chip U1 is connected in series with the capacitor C6 and the resistor R15 in sequence and then connected to The connection point of the capacitor C6 and the resistor R15 is connected to the capacitor C5 through the resistor R25 and then grounded. The connection point of the capacitor C6 and the resistor R15 is connected to the resistor R24 ​​and the resistor R23 in series in sequence through the resistor R25 and then connected to the 2nd pin of the rectifier bridge DB1 in the power input module 1. The 4th pin of the power chip U1 is respectively connected to the cathode of the diode D5 and one end of the resistor R26. The other end of the resistor R26 is connected to the 1st pin of the MOS tube Q1. The anode of the diode D5 is connected to the 1st pin of the MOS tube Q1 through the resistor R27. The 3rd pin of the power chip U1 is connected in series with the resistor R17 and the resistor RS1 in sequence. The resistor RS1 is connected in parallel with the resistor RS5. The resistor RS1 is also connected in parallel with the resistor RS2, the resistor RS3 and the resistor RS4. The resistor R18 is also connected between the 1st pin and the 3rd pin of the MOS tube Q1.

[0018] The power input module 1 includes an industrial mode inductor L2, a rectifier bridge DB1, an inductor L1, a varistor VR1 and a capacitor C2. Pin 1 of the industrial mode inductor L2 is connected to the live wire interface L through a resistor wire F1, and pin 3 of the industrial mode inductor L2 is connected to the neutral wire interface N. A varistor VR1, a capacitor CX1 and a resistor R3 and a resistor R4 connected in series are connected between pins 1 and 3 of the industrial mode inductor L2. Pin 2 of the industrial mode inductor L2 is connected to pin 3 of the rectifier bridge DB1, and pin 4 of the industrial mode inductor L2 is connected to the rectifier bridge. Pin 1 of DB1 is connected, pins 4 and 2 of the rectifier bridge DB1 are connected with capacitor C1, pin 2 of the rectifier bridge DB1 is respectively connected to one end of the inductor L1 and one end of the resistor R1, pin 2 of the rectifier bridge DB1 is also respectively connected to the resistor R11 and the resistor R23 in the power control module 3, the other end of the inductor L1 is connected to the other end of the resistor R1 and then connected to one end of the capacitor C2 and pin 1 of the transformer TR1 in the step-down module 6, the other end of the capacitor C2 is connected to pin 4 of the rectifier bridge DB1 and then grounded.

[0019] The step-down module 6 includes a transformer TR1, a resistor R5, a resistor R6, a resistor R7, a capacitor C2, a diode D2, a diode D3 and a diode D4. Pin 1 of the transformer TR1 is respectively connected to the power input module 1, one end of the resistor R5, one end of the resistor R6, one end of the resistor R7 and one end of the capacitor C2. Pin 3 of the transformer TR1 is respectively connected to pin 2 of the MOS tube Q1 and the positive electrode of the diode D2. The negative electrode of the diode D2 is respectively connected to the other end of the resistor R5, the other end of the resistor R6, the other end of the resistor R7 and the other end of the capacitor C2 through the resistor R10. The transformer TR1 Pin 5 of the transformer TR1 is connected to pin 2 of the power chip U1 through resistors R13 and R14 connected in series. Pin 5 of the transformer TR1 is also connected to the positive electrode of the diode D3 through resistor R8. The negative electrode of the diode D3 is connected to the positive electrode of the diode D4. The negative electrode of the diode D4 is connected to pin 8 of the power chip U1. The negative electrode of the diode D3 is also connected to pin 6 of the transformer TR1 through capacitor C3. The negative electrode of the diode D3 is also connected to the positive electrode of the capacitor CE5. The negative electrode of the capacitor CE5 is connected to pin 6 of the transformer TR1 and then grounded. Pins 11 and 12 of the transformer TR1 are respectively connected to the power output module 2.

[0020] The power output module 2 includes a diode DS1, a diode DS2, a resistor R19, a resistor R20, a capacitor CS1, a capacitor CE2, a capacitor CE3 and a resistor R21. The positive electrode of the diode DS1, the positive electrode of the diode DS2, one end of the resistor R19 and one end of the resistor R20 are all connected to the 12th pin of the transformer TR1. The negative electrode of the diode DS1 and the negative electrode of the diode DS2 are connected and then connected to one end of the capacitor CS1, the positive electrode of the capacitor CE2, the positive electrode of the capacitor CE3 and one end of the resistor R21 respectively. The negative electrode of the diode DS1 and the negative electrode of the diode DS2 are connected and then connected to the positive electrode interface LED+ for connecting the positive electrode of the lamp bead. The other end of the resistor R19 is connected to the other end of the resistor R20 and then connected to the other end of the capacitor CS1. The negative electrode of the capacitor CE2, the negative electrode of the capacitor CE3 and the other end of the resistor R21 are connected to each other and then connected to the 11th pin of the transformer TR1. The 11th pin of the transformer TR1 is connected to the negative electrode interface LED- for connecting the negative electrode of the lamp bead.

[0021] The signal input module 4 includes a transformer T2, a diode D6, a capacitor C8, a diode DS3, a voltage regulator ZD2, a capacitor CE4, a capacitor CS3, a resistor R29 and an interface CN3 for connecting a dimmer. Pin 2 of the transformer T2 is respectively connected to one end of the capacitor C8 and pin 5 of the power chip U1, the other end of the capacitor C8 is grounded, pin 1 of the transformer T2 is connected to the positive electrode of the diode D6 through the resistor R30, the negative electrode of the diode D6 is connected to pin 6 of the power chip U1, pin 3 of the transformer T2 is connected to the positive electrode of the diode DS3, the negative electrode of the diode DS3 is respectively connected to the negative electrode of the voltage regulator ZD2, the positive electrode of the capacitor CE4, one end of the capacitor CS3 and one end of the resistor R29, the other end of the resistor R29 is respectively connected to pin 1 of the interface CN3 and the DIM+ pin of the emergency power supply 5, and pin 4 of the transformer T2 is respectively connected to the positive electrode of the voltage regulator ZD2, the negative electrode of the capacitor CE4, the other end of the capacitor CS3, pin 2 of the interface CN3 and the DIM- pin of the emergency power supply 5.

[0022] When the lamp control circuit with emergency power supply is applied to the lamp, the neutral line interface N and the live line interface L are connected to the neutral and live lines of the mains respectively. When the mains is supplying power normally, the mains filters the differential interference between the neutral and live lines through the capacitor CX1 in the power input module 1, and then filters the common mode interference through the common mode inductor L2, outputs direct current after passing through the rectifier bridge, and then passes through the capacitor C1 filtering, and the inductor L1 blocks the alternating current and passes the direct current, and then transmits it to the step-down module 6, and at the same time, the direct current is transmitted to the 8th pin of the power chip U1 through the starting resistors R11 and R12. When the voltage of the power chip U1 reaches the target voltage, such as 17V, the power chip U1 starts, the 4th pin of the power chip U1 outputs a voltage of 11V, the MOS tube Q1 starts, and the coil windings at the 1st and 3rd pins of the transformer TR1 generate positive electromotive force at the bottom and negative at the top, which is rectified by the diodes DS1 and DS2, filtered by the capacitors CE2 and CE3, and then supplied to the lamp beads through the positive interface LED+ and the negative interface LED-. When the power chip U1 is started, the 5th pin of the power chip U1 outputs a 15V voltage to the signal input module 4, which passes through the transformer T2 and then the voltage regulator ZD2, and outputs a 11V voltage to the DIM+ pin of the emergency power supply 5. The emergency power supply 5 is charged to ensure that there is sufficient power to continue to provide power to the lamp when there is no mains power. The interface CN3 is connected to the 0-10V dimming signal to ensure that the emergency power supply 5 can drive the lamp beads to work normally. If there is a sudden power outage, the emergency power supply 5 will output a 120VAC voltage to the power input module 1. Under the control of the power control module 3, and after being processed by the power input module 1, the step-down module 6 and the power output module 2, the power for the lamp beads to light up is output, ensuring that the lamp can still be illuminated normally when there is a power outage or the mains power is abnormal, which improves the comfort of the lamp and avoids the situation where the lamp cannot work normally when there is no mains power.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A lamp control circuit with an emergency power supply, comprising a neutral line interface N, a live line interface L and a power input module (1) for rectifying and filtering alternating current, wherein the neutral line interface N and the live line interface L are both connected to the power input module (1), characterized in that: The lamp control circuit further comprises a MOS tube Q1, a step-down module (6) for stepping down the voltage input by the power input module (1), a power control module (3) for regulating the voltage output by the step-down module (6), an emergency power supply (5) for providing electric energy when the mains power is abnormal, a power output module (2) for connecting to the lamp beads, and a signal input module (4) for supplementing electric energy to the emergency power supply (5) and transmitting a dimming signal, wherein the emergency power supply (5) is connected to the power input module (1), the step-down module (6) is respectively connected to the power input module (1) and the power output module (2), the power control module (3) is respectively connected to the power input module (1) and the signal input module (4), the power control module (3) is connected to pin 1 of the MOS tube Q1, the step-down module (6) is connected to pin 2 of the MOS tube Q1, and pin 3 of the MOS tube Q1 is grounded after being connected to a resistor RS5.

2. The lamp control circuit with emergency power supply according to claim 1, characterized in that: The step-down module (6) comprises a transformer TR1, a resistor R5, a resistor R6, a resistor R7, a capacitor C2, a diode D2, a diode D3 and a diode D4. Pin 1 of the transformer TR1 is respectively connected to the power input module (1), one end of the resistor R5, one end of the resistor R6, one end of the resistor R7 and one end of the capacitor C2. Pin 3 of the transformer TR1 is respectively connected to pin 2 of the MOS tube Q1 and the positive electrode of the diode D2. The negative electrode of the diode D2 is respectively connected to the other end of the resistor R5, the other end of the resistor R6, the other end of the resistor R7 and the positive electrode of the capacitor C2 through a resistor R10. The other end is connected, the 5th pin of the transformer TR1 is connected to the power control module (3), the 5th pin of the transformer TR1 is also connected to the positive electrode of the diode D3 through the resistor R8, the negative electrode of the diode D3 is connected to the positive electrode of the diode D4, the negative electrode of the diode D4 is connected to the power control module (3), the negative electrode of the diode D3 is also connected to the 6th pin of the transformer TR1 through the capacitor C3, the negative electrode of the diode D3 is also connected to the positive electrode of the capacitor CE5, the negative electrode of the capacitor CE5 is connected to the 6th pin of the transformer TR1 and then grounded, and the 11th and 12th pins of the transformer TR1 are respectively connected to the power output module (2).

3. The lamp control circuit with emergency power supply according to claim 2, characterized in that: The power output module (2) comprises a diode DS1, a diode DS2, a resistor R19, a resistor R20, a capacitor CS1, a capacitor CE2, a capacitor CE3 and a resistor R21. The positive electrode of the diode DS1, the positive electrode of the diode DS2, one end of the resistor R19 and one end of the resistor R20 are all connected to the 12th pin of the transformer TR1. The negative electrode of the diode DS1 and the negative electrode of the diode DS2 are connected to one end of the capacitor CS1, the positive electrode of the capacitor CE2, the positive electrode of the capacitor CE3 and one end of the resistor R21 respectively. The negative electrode of the diode DS1 and the negative electrode of the diode DS2 are connected to a positive electrode interface LED+ for connecting to the positive electrode of a lamp bead. The other end of the resistor R19 and the other end of the resistor R20 are connected to the other end of the capacitor CS1. The negative electrode of the capacitor CE2, the negative electrode of the capacitor CE3 and the other end of the resistor R21 are connected to each other and then connected to the 11th pin of the transformer TR1, and are connected to a negative electrode interface LED- for connecting to the negative electrode of the lamp bead.

4. The lamp control circuit with emergency power supply according to claim 1, 2 or 3, characterized in that: The signal input module (4) comprises a transformer T2, a diode D6, a capacitor C8, a diode DS3, a voltage regulator tube ZD2, a capacitor CE4, a capacitor CS3, a resistor R29 and an interface CN3 for connecting a dimmer, wherein pin 2 of the transformer T2 is respectively connected to one end of the capacitor C8 and the power control module (3), the other end of the capacitor C8 is grounded, pin 1 of the transformer T2 is connected to the positive electrode of the diode D6 via a resistor R30, the negative electrode of the diode D6 is connected to the power control module (3), pin 3 of the transformer T2 is connected to the positive electrode of the diode DS3, the negative electrode of the diode DS3 is respectively connected to the negative electrode of the voltage regulator tube ZD2, the positive electrode of the capacitor CE4, one end of the capacitor CS3 and one end of the resistor R29, the other end of the resistor R29 is respectively connected to pin 1 of the interface CN3 and the emergency power supply (5), and pin 4 of the transformer T2 is respectively connected to the positive electrode of the voltage regulator tube ZD2, the negative electrode of the capacitor CE4, the other end of the capacitor CS3, pin 2 of the interface CN3 and the emergency power supply (5).

5. The lamp control circuit with emergency power supply according to claim 1, 2 or 3, characterized in that: The power input module (1) comprises an industrial mode inductor L2, a rectifier bridge DB1, an inductor L1, a varistor VR1 and a capacitor C2, wherein pin 1 of the industrial mode inductor L2 is connected to a live wire interface L via a resistor wire F1, pin 3 of the industrial mode inductor L2 is connected to a neutral wire interface N, a varistor VR1, a capacitor CX1 and a resistor R3 and a resistor R4 connected in series are connected between pins 1 and 3 of the industrial mode inductor L2, and pin 2 of the industrial mode inductor L2 is connected to the rectifier bridge DB1. The 3rd pin of the industrial mode inductor L2 is connected to the 1st pin of the rectifier bridge DB1, the 4th pin and the 2nd pin of the rectifier bridge DB1 are connected to the capacitor C1, the 2nd pin of the rectifier bridge DB1 is respectively connected to the power control module (3), one end of the inductor L1 and one end of the resistor R1, the other end of the inductor L1 is connected to the other end of the resistor R1 and then connected to one end of the capacitor C2 and the step-down module (6), and the other end of the capacitor C2 is connected to the 4th pin of the rectifier bridge DB1 and then grounded.

6. The lamp control circuit with emergency power supply according to claim 1, 2 or 3, characterized in that: The power control module (3) comprises a power chip U1, a diode D5, a resistor R26, a resistor R11 and a resistor R12. Pin 8 of the power chip U1 is connected to the power input module (1) via the resistors R11 and R12 connected in series. Pin 8 of the power chip U1 is also connected to the step-down module (6). Pin 6 of the power chip U1 is connected to the signal input module (4). Pin 5 of the power chip U1 is connected to the signal input module (4). Pin 2 of the power chip U1 is connected to the step-down module (6) via the resistors R13 and R14 connected in series. Pin 2 of the power chip U1 is also connected to the resistor R16 and then grounded. Pin 4 of the power chip U1 is respectively connected to the cathode of the diode D5 and one end of the resistor R26. The other end of the resistor R26 is connected to pin 1 of the MOS tube Q1. The anode of the diode D5 is connected to pin 1 of the MOS tube Q1 via the resistor R27.

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