LED filament lamp circuit with emergency lighting function

Abstract

The utility model discloses an LED filament lamp circuit with an emergency lighting function, which comprises a filament light-emitting component, a constant current power supply circuit, a detection control circuit, a storage battery, a voltage stabilizing circuit and a boost conversion circuit, in a normal lighting state, the filament light-emitting component is controlled by the constant current power supply circuit to emit light for normal lighting, and in an emergency lighting state, the detection control circuit is controlled by the storage battery. The lamp filament light-emitting component is controlled by the boost conversion circuit to emit light for emergency lighting, and an LED light-emitting module does not need to be additionally arranged; the LED lamp has the advantages that illumination is achieved through the filament light-emitting component in the normal illumination state and the emergency illumination state, and the illumination effect is good.

Description

Technical Field

[0001] The utility model relates to an LED filament lamp circuit, in particular to an LED filament lamp circuit with an emergency lighting function. Background Art

[0002] LED filament lamps are LED light source products with the appearance of traditional incandescent lamps. They are widely used because of their high luminous efficiency and omnidirectional luminescence. Traditional LED filament lamps usually include a constant current power supply circuit, a glass shell, and a filament light-emitting component made of a linear LED light-emitting module installed in the glass shell. The constant current power supply circuit is arranged outside the glass shell, and has a live input terminal, a zero input terminal, a positive output terminal, and a negative output terminal. The constant current power supply circuit is used to convert the AC power connected between its live input terminal and the zero input terminal into a constant-size DC current output between its positive output terminal and the negative output terminal. The filament light-emitting component has a positive electrode and a negative electrode. The positive electrode of the filament light-emitting component is connected to the positive output terminal of the constant current power supply circuit, and the negative electrode of the filament light-emitting component is connected to the negative output terminal of the constant current power supply circuit. When the DC current output by the constant current power supply circuit is connected between the positive and negative electrodes of the filament light-emitting component, the linear LED light-emitting module inside it emits light, thereby realizing the light emission of the filament light-emitting component.

[0003] LED filament lamps with emergency lighting functions have added emergency lighting functions on the basis of the lighting functions of traditional LED filament lamps, and have been widely used. Because the working voltage of the linear LED light-emitting module that realizes the filament light-emitting component is relatively high, and the voltage of ordinary batteries is much lower than the working voltage of the linear LED light-emitting module, the battery cannot use its current current limiting method to power the filament light-emitting component to make the filament light-emitting component emit light. Therefore, existing LED filament lamps with emergency lighting functions are usually also provided with an LED light-emitting module whose working voltage is lower than the internal battery voltage, and this LED light-emitting module is made of commonly used SMD LED light-emitting bodies.

[0004] like Figure 1As shown, the main circuit of the existing LED filament lamp with emergency lighting function, that is, the LED filament lamp circuit with emergency lighting function, adds a detection control circuit, a battery and an LED light-emitting module on the basis of the traditional LED filament lamp circuit. The detection control circuit has a live wire input terminal, a neutral wire input terminal, a charging input terminal, a battery positive connection terminal, a battery negative connection terminal, an output terminal and a negative electrode. The battery and the LED light-emitting module both have a positive electrode and a negative electrode. The live wire input terminal of the detection control circuit is connected to the live wire input terminal of the constant current power supply circuit, and its connection end is the live wire connection end of the LED filament lamp circuit with emergency lighting function. Used to connect the live wire end of the mains, the neutral wire input end of the detection control circuit is connected to the neutral wire input end of the constant current power supply circuit, and its connection end is the neutral wire connection end of the LED filament lamp circuit with emergency lighting function, used to connect the neutral wire end of the mains, the charging input end of the detection control circuit is connected to the negative pole of the filament light-emitting component, the battery positive connection end of the detection control circuit is connected to the positive pole of the battery, the battery negative connection end of the detection control circuit is connected to the negative pole of the battery, the output end of the detection control circuit is connected to the positive pole of the LED light-emitting module, the negative pole of the LED light-emitting module and the negative pole of the detection control circuit are connected to the negative output end of the constant current power supply circuit. The detection control circuit is implemented by using the current conventional emergency lighting special detection control circuit, which is used to detect whether the mains power is abnormally cut off when the live wire connection end and the neutral wire connection end of the LED filament lamp circuit with emergency lighting function are connected to the mains power. When the mains power is abnormally cut off, the voltage output between the positive and negative poles of the battery is converted into a current of a preset size and then output at its output end, and the LED light-emitting module is controlled to emit light to realize emergency lighting. When the mains power is not abnormally cut off, the voltage output at the output end of the detection control circuit is 0, the LED light-emitting module is controlled not to emit light, and the voltage between the positive and negative poles of the battery is detected to determine whether the battery is fully charged. When the battery is fully charged, the battery is stopped from being charged, and when the battery is not fully charged, the battery is charged. When the AC power is connected between the live wire connection terminal and the neutral wire connection terminal of the LED filament lamp circuit with emergency lighting function, if the AC power is abnormally cut off, the DC current output between the positive output terminal and the negative output terminal of the constant current power supply circuit is 0, and the filament light-emitting component does not emit light. If the AC power is not abnormally cut off, a constant DC current is output between the positive output terminal and the negative output terminal of the constant current power supply circuit, and the filament light-emitting component emits light.

[0005] In the existing LED filament lamp circuit with emergency lighting function, the LED light-emitting module is usually installed outside the glass shell, and the filament light-emitting component and the LED light-emitting module will not emit light at the same time, which results in poor lighting effects in both normal lighting state (filament light-emitting component) and emergency lighting state (i.e., the LED light-emitting module emits light alone). Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide an LED filament lamp circuit with an emergency lighting function, which has good lighting effects in both normal lighting state and emergency lighting state.

[0007] The technical solution adopted by the utility model to solve the above technical problems is: an LED filament lamp circuit with emergency lighting function, including a filament light-emitting component, a constant current power supply circuit, a detection control circuit and a battery, the filament light-emitting component has a positive electrode and a negative electrode, the constant current power supply circuit has a live wire input terminal, a zero line input terminal, a positive output terminal and a negative output terminal, the detection control circuit has a live wire input terminal, a zero line input terminal, a charging input terminal, a battery positive connection terminal, a battery negative connection terminal, an output terminal and a negative electrode, the battery has a positive electrode and a negative electrode, the live wire input terminal of the constant current power supply circuit is connected to the live wire input terminal of the detection control circuit, and its connection end is the live wire connection end of the LED filament lamp circuit with emergency lighting function, which is used to connect the live wire of the mains, the zero line input terminal of the constant current power supply circuit is connected to the zero line input terminal of the detection control circuit, and its connection end is the zero line connection end of the LED filament lamp circuit with emergency lighting function, which is used to connect the live wire of the mains The neutral line, the positive output end of the constant current power supply circuit is connected to the positive electrode of the filament light-emitting component, the battery positive connection end of the detection control circuit is connected to the positive electrode of the battery, the battery negative connection end of the detection control circuit is connected to the negative electrode of the battery, the negative electrode of the filament light-emitting component is connected to the charging input end of the detection control circuit, and the LED filament lamp circuit with emergency lighting function also includes a voltage stabilizing circuit and a boost conversion circuit, the voltage stabilizing circuit has a positive electrode and a negative electrode, the boost conversion circuit has a positive electrode, an output end and a negative electrode, the output end of the boost conversion circuit is connected to the positive electrode of the filament light-emitting component, the positive electrode of the voltage stabilizing circuit is connected to the charging input end of the detection control circuit, the positive electrode of the boost conversion circuit is connected to the output end of the detection control circuit, and the negative electrode of the boost conversion circuit, the negative electrode of the detection control circuit, the negative electrode of the voltage stabilizing circuit and the negative output end of the constant current power supply circuit are connected.

[0008] The boost conversion circuit includes a three-terminal inductor, a first integrated circuit of model QW2023, a first diode, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor and a fourth resistor. The first diode is a rectifier diode, the third capacitor is an electrolytic capacitor, the three-terminal inductor includes two coils, and the two coils are respectively referred to as a first coil and a second coil. One end of the first coil is the first end of the three-terminal inductor, the other end of the first coil is connected to one end of the second coil, and the connection end is the second end of the three-terminal inductor, and the other end of the second coil is the third end of the three-terminal inductor. The 4th and 6th pins of the first integrated circuit and one end of the first capacitor are connected to the first end of the three-terminal inductor, and the connection end is the positive electrode of the boost conversion circuit. The second end of the three-terminal inductor is connected to the 1st pin of the first integrated circuit. The third end of the three-terminal inductor is connected to the positive electrode of the first diode, the negative electrode of the first diode and one end of the third resistor are connected to the positive electrode of the third capacitor, and the connection end thereof is the output end of the boost conversion circuit, one end of the first resistor is connected to the second pin of the first integrated circuit, one end of the second resistor is connected to the third pin of the first integrated circuit, one end of the second capacitor is connected to the seventh pin of the first integrated circuit, the other end of the third resistor and one end of the fourth resistor are connected to the eighth pin of the first integrated circuit, the other end of the first capacitor, the other end of the second capacitor, the negative electrode of the third capacitor, the other end of the first resistor, the other end of the second resistor, and the other end of the fourth resistor are connected to the fifth pin of the first integrated circuit, and the connection end thereof is the negative electrode of the boost conversion circuit.

[0009] The detection control circuit includes a second integrated circuit of model QW2886L, a fifth resistor, a sixth resistor and a fourth capacitor. One end of the fifth resistor is connected to the VL pin of the second integrated circuit, one end of the sixth resistor is connected to the VN pin of the second integrated circuit, the other end of the fifth resistor is the zero line input end of the detection control circuit, the other end of the sixth resistor is the live line input end of the detection control circuit, one end of the fourth capacitor is connected to the BATP pin of the second integrated circuit, and its connection end is simultaneously the charging input end of the detection control circuit and the positive connection end of the battery, the other end of the fourth capacitor is connected to the BATN pin of the second integrated circuit, and its connection end is the negative connection end of the battery of the detection control circuit, the EN pin of the second integrated circuit is the output end of the detection control circuit, and the GND pin of the second integrated circuit is the negative pole of the detection control circuit.

[0010] Compared with the prior art, the utility model has the advantages that by setting a voltage stabilizing circuit and a boost conversion circuit, the voltage stabilizing circuit has a positive pole and a negative pole, the boost conversion circuit has a positive pole, an output end and a negative pole, the output end of the boost conversion circuit is connected to the positive pole of the filament light-emitting component, the positive pole of the voltage stabilizing circuit is connected to the charging input end of the detection control circuit, the positive pole of the boost conversion circuit is connected to the output end of the detection control circuit, the negative pole of the boost conversion circuit, the negative pole of the detection control circuit, the negative pole of the voltage stabilizing circuit and the negative output end of the constant current power supply circuit are connected; when the live wire connection end and the neutral wire connection end of the LED filament lamp circuit with emergency lighting function are connected to the mains power, the live wire input end and the neutral wire input end of the constant current power supply circuit are connected to the mains power voltage, and the live wire input end and the neutral wire input end of the detection control circuit are also connected to the mains power voltage. At this time A constant-size DC current is output between the positive output terminal and the negative output terminal of the constant-current power supply circuit to drive the filament light-emitting component to emit light. The positive electrode of the voltage-stabilizing circuit outputs a voltage, and there is no voltage output at the output terminal of the detection control circuit, that is, the output voltage is 0. At the same time, the detection control circuit detects the voltage between the positive and negative electrodes of the battery to determine whether the battery is fully charged. If the battery is not fully charged, the detection control circuit uses the voltage output by the positive electrode of the voltage-stabilizing circuit to charge the battery. If the battery is fully charged, the detection control circuit stops charging the battery. When there is no voltage output at the output terminal of the detection control circuit, there is no voltage input to the positive electrode of the boost conversion circuit, that is, the voltage connected to it is 0, and there is no current output at its output terminal, that is, the output current is 0, and the boost conversion circuit has no control effect on the filament light-emitting component.When there is no mains voltage connected between the live wire connection terminal and the neutral wire connection terminal of the LED filament lamp circuit with emergency lighting function, there is no mains voltage connected between the live wire input terminal and the neutral wire input terminal of the constant current power supply circuit, and there is no mains voltage connected between the live wire input terminal and the neutral wire input terminal of the detection control circuit. At this time, there is no current output between the positive output terminal and the negative output terminal of the constant current power supply circuit, that is, the output DC current is 0, and the constant current power supply circuit has no control effect on the filament light-emitting component. At this time, if the detection control circuit detects that the resistance value between its live wire input terminal and the neutral wire input terminal is greater than the preset resistance value, it indicates that the control switch connected to the mains power supply line of the LED filament lamp with emergency lighting function is in a disconnected state. At this time, the output terminal of the detection control circuit does not output voltage, the output terminal of the boost conversion circuit does not output DC current, and the boost conversion circuit has no control effect on the filament light-emitting component. If the detection control circuit detects that the resistance value between the live wire input terminal and the neutral wire input terminal is less than or equal to the preset resistance value, it indicates that the LED filament lamp with emergency lighting function is connected to the mains power supply line and the control switch is in a closed state. At this time, it indicates that the mains power is abnormally cut off. Then the output end of the detection control circuit outputs the voltage of the positive electrode of the battery, and the boost conversion circuit performs a boost conversion on the voltage connected to the positive electrode, and outputs a corresponding DC current at its output end to drive the filament light-emitting component to emit light, thereby realizing emergency lighting. Therefore, in the normal lighting state, the utility model controls the filament light-emitting component to emit light through the constant current power supply circuit for normal lighting, and in the emergency lighting state, controls the filament light-emitting component to emit light through the boost conversion circuit for emergency lighting. No additional LED light-emitting module is required. In both the normal lighting state and the emergency lighting state, lighting is realized through the filament light-emitting component, and the lighting effect is good. ; BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural principle block diagram of an existing LED filament lamp circuit with emergency lighting function;

[0012] Figure 2 This is a structural principle block diagram of the LED filament lamp circuit with emergency lighting function of the utility model;

[0013] Figure 3 A circuit diagram of a boost conversion circuit of an LED filament lamp circuit with emergency lighting function of the utility model;

[0014] Figure 4 The utility model discloses a circuit connection diagram of a detection control circuit and a battery of an LED filament lamp circuit with an emergency lighting function. DETAILED DESCRIPTION

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0016] Embodiment 1: Figure 2 As shown, an LED filament lamp circuit with emergency lighting function includes a filament light-emitting component, a constant current power supply circuit, a detection control circuit and a battery BT, the filament light-emitting component has a positive electrode and a negative electrode, the constant current power supply circuit has a live wire input terminal, a zero line input terminal, a positive output terminal and a negative output terminal, the detection control circuit has a live wire input terminal, a zero line input terminal, a charging input terminal, a battery positive connection terminal, a battery negative connection terminal, an output terminal and a negative electrode, the battery BT has a positive electrode and a negative electrode, the live wire input terminal of the constant current power supply circuit is connected to the live wire input terminal of the detection control circuit, and its connection end is the live wire connection end of the LED filament lamp circuit with emergency lighting function, which is used to connect the mains live wire, the zero line input terminal of the constant current power supply circuit is connected to the zero line input terminal of the detection control circuit, and its connection end is the zero line connection end of the LED filament lamp circuit with emergency lighting function, Used to connect the AC neutral line, the positive output end of the constant current power supply circuit is connected to the positive electrode of the filament light-emitting component, the battery positive connection end of the detection control circuit is connected to the positive electrode of the battery BT, the battery negative connection end of the detection control circuit is connected to the negative electrode of the battery BT, the negative electrode of the filament light-emitting component is connected to the charging input end of the detection control circuit, and the LED filament lamp circuit with emergency lighting function also includes a voltage stabilizing circuit and a boost conversion circuit. The voltage stabilizing circuit has a positive electrode and a negative electrode, and the boost conversion circuit has a positive electrode, an output end and a negative electrode. The output end of the boost conversion circuit is connected to the positive electrode of the filament light-emitting component, the positive electrode of the voltage stabilizing circuit is connected to the charging input end of the detection control circuit, the positive electrode of the boost conversion circuit is connected to the output end of the detection control circuit, and the negative electrode of the boost conversion circuit, the negative electrode of the detection control circuit, the negative electrode of the voltage stabilizing circuit and the negative output end of the constant current power supply circuit are connected.

[0017] In this embodiment, when the live wire connection end and the neutral wire connection end of the LED filament lamp circuit with emergency lighting function are connected to the mains, the live wire input end and the neutral wire input end of the constant current power supply circuit are connected to the mains voltage, and the live wire input end and the neutral wire input end of the detection control circuit are also connected to the mains voltage. At this time, a constant DC current is output between the positive output end and the negative output end of the constant current power supply circuit to drive the filament light-emitting component to emit light, the positive electrode of the voltage stabilizing circuit outputs a voltage, and the output end of the detection control circuit has no voltage output, that is, the output voltage is 0. At the same time, the detection control circuit detects the voltage between the positive and negative electrodes of the battery BT to determine whether the battery BT Whether it is in a fully charged state, if the battery BT is not in a fully charged state, the detection control circuit uses the voltage output by the positive electrode of the voltage stabilizing circuit to charge the battery BT. If the battery BT is in a fully charged state, the detection control circuit stops charging the battery BT. When there is no voltage output at the output end of the detection control circuit, there is no voltage input to the positive electrode of the boost conversion circuit, that is, the voltage connected to it is 0, and there is no current output at its output end, that is, the output current is 0, and the boost conversion circuit has no control effect on the filament light-emitting component; when there is no AC voltage connected between the live wire connection end and the neutral wire connection end of the LED filament lamp circuit with emergency lighting function, the live wire of the constant current power supply circuit There is no mains voltage connected between the input terminal and the neutral input terminal, and there is no mains voltage connected between the live input terminal and the neutral input terminal of the detection control circuit. At this time, there is no current output between the positive output terminal and the negative output terminal of the constant current power supply circuit, that is, the output DC current is 0, and the constant current power supply circuit has no control effect on the filament light-emitting component. At this time, if the detection control circuit detects that the resistance value between its live input terminal and the neutral input terminal is greater than the preset resistance value (generally 500k ohms), it indicates that the control switch of the LED filament lamp with emergency lighting function connected to the mains power supply line is in a disconnected state. At this time, the output terminal of the detection control circuit does not output voltage either, and the rise The output end of the voltage conversion circuit does not output DC current, and the boost conversion circuit has no control effect on the filament light-emitting component. The filament light-emitting component does not emit light. If the detection control circuit detects that the resistance value between its live wire input end and the neutral wire input end is less than or equal to the preset resistance value, it indicates that the control switch of the LED filament lamp with emergency lighting function connected to the mains power supply line is in a closed state, which means that the mains power is abnormally cut off. Then the output end of the detection control circuit outputs the voltage of the positive electrode of the battery BT, and the boost conversion circuit performs a boost conversion on the voltage connected to its positive electrode, and outputs the corresponding DC current at its output end to drive the filament light-emitting component to emit light, thereby realizing emergency lighting.

[0018] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that: Figure 3As shown, in this embodiment, the boost conversion circuit includes a three-terminal inductor T, a first integrated circuit U1 of model QW2023, a first diode D1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4, the first diode D1 is a rectifier diode, the third capacitor C3 is an electrolytic capacitor, the three-terminal inductor T includes two coils, and the two coils are respectively referred to as a first coil N1 and a second coil N2, one end of the first coil N1 is a first end of the three-terminal inductor T, the other end of the first coil N1 is connected to one end of the second coil N2, and the connection end is the second end of the three-terminal inductor T, the other end of the second coil N2 is the third end of the three-terminal inductor T, the 4th and 6th pins of the first integrated circuit U1, one end of the first capacitor C1 and the first end of the three-terminal inductor T are connected, and the connection end is the positive electrode of the boost conversion circuit, and the three-terminal inductor T The second end of the three-terminal inductor T is connected to the first pin of the first integrated circuit U1, the third end of the three-terminal inductor T is connected to the anode of the first diode D1, the cathode of the first diode D1 and one end of the third resistor R3 are connected to the anode of the third capacitor C3, and the connection end thereof is the output end of the boost conversion circuit, one end of the first resistor R1 is connected to the second pin of the first integrated circuit U1, one end of the second resistor R2 is connected to the third pin of the first integrated circuit U1, one end of the second capacitor C2 is connected to the seventh pin of the first integrated circuit U1, the other end of the third resistor R3 and one end of the fourth resistor R4 are connected to the eighth pin of the first integrated circuit U1, the other end of the first capacitor C1, the other end of the second capacitor C2, the negative electrode of the third capacitor C3, the other end of the first resistor R1, the other end of the second resistor R2 and the other end of the fourth resistor R4 are connected to the fifth pin of the first integrated circuit U1, and the connection end thereof is the negative electrode of the boost conversion circuit.

[0019] Embodiment 3: This embodiment is basically the same as Embodiment 1, except that: Figure 4 As shown, in this embodiment, the detection control circuit includes a second integrated circuit U2 with a model number of QW2886L, a fifth resistor R5, a sixth resistor R6 and a fourth capacitor C4, one end of the fifth resistor R5 is connected to the VL pin of the second integrated circuit U2, one end of the sixth resistor R6 is connected to the VN pin of the second integrated circuit U2, the other end of the fifth resistor R5 is the neutral line input end of the detection control circuit, the other end of the sixth resistor R6 is the live line input end of the detection control circuit, one end of the fourth capacitor C4 is connected to the BATP pin of the second integrated circuit U2, and its connection end is simultaneously the charging input end of the detection control circuit and the battery positive connection end, the other end of the fourth capacitor C4 is connected to the BATN pin of the second integrated circuit U2, and its connection end is the battery negative connection end of the detection control circuit, the EN pin of the second integrated circuit U2 is the output end of the detection control circuit, and the GND pin of the second integrated circuit U2 is the negative electrode of the detection control circuit.

Claims

1. An LED filament lamp circuit with emergency lighting function, comprising a filament light-emitting component, a constant current power supply circuit, a detection control circuit and a battery, wherein the filament light-emitting component has a positive electrode and a negative electrode, the constant current power supply circuit has a live wire input terminal, a zero line input terminal, a positive output terminal and a negative output terminal, the detection control circuit has a live wire input terminal, a zero line input terminal, a charging input terminal, a battery positive connection terminal, a battery negative connection terminal, an output terminal and a negative electrode, the battery has a positive electrode and a negative electrode, the live wire input terminal of the constant current power supply circuit is connected to the live wire input terminal of the detection control circuit, and the connection end is the LED lamp with emergency lighting function The live wire connection end of the filament lamp circuit is used to connect the live wire of the mains power supply. The zero wire input end of the constant current power supply circuit is connected to the zero wire input end of the detection control circuit, and its connection end is the zero wire connection end of the LED filament lamp circuit with emergency lighting function, which is used to connect the mains power zero wire. The positive output end of the constant current power supply circuit is connected to the positive pole of the filament light-emitting component. The battery positive connection end of the detection control circuit is connected to the positive pole of the battery. The battery negative connection end of the detection control circuit is connected to the negative pole of the battery. The negative pole of the filament light-emitting component is connected to the charging input end of the detection control circuit. It is characterized in that The LED filament lamp circuit with emergency lighting function also includes a voltage stabilizing circuit and a boost conversion circuit. The voltage stabilizing circuit has a positive pole and a negative pole. The boost conversion circuit has a positive pole, an output end and a negative pole. The output end of the boost conversion circuit is connected to the positive pole of the filament light-emitting component, the positive pole of the voltage stabilizing circuit is connected to the charging input end of the detection control circuit, the positive pole of the boost conversion circuit is connected to the output end of the detection control circuit, and the negative pole of the boost conversion circuit, the negative pole of the detection control circuit, the negative pole of the voltage stabilizing circuit and the negative output end of the constant current power supply circuit are connected.

2. The LED filament lamp circuit with emergency lighting function according to claim 1, characterized in that The boost conversion circuit includes a three-terminal inductor, a first integrated circuit of model QW2023, a first diode, a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor and a fourth resistor. The first diode is a rectifier diode, the third capacitor is an electrolytic capacitor, the three-terminal inductor includes two coils, and the two coils are respectively referred to as a first coil and a second coil. One end of the first coil is the first end of the three-terminal inductor, the other end of the first coil is connected to one end of the second coil, and the connection end is the second end of the three-terminal inductor, and the other end of the second coil is the third end of the three-terminal inductor. The 4th and 6th pins of the first integrated circuit and one end of the first capacitor are connected to the first end of the three-terminal inductor, and the connection end is the positive electrode of the boost conversion circuit. The second end of the three-terminal inductor is connected to the 1st pin of the first integrated circuit. The third end of the three-terminal inductor is connected to the positive electrode of the first diode, the negative electrode of the first diode and one end of the third resistor are connected to the positive electrode of the third capacitor, and the connection end thereof is the output end of the boost conversion circuit, one end of the first resistor is connected to the second pin of the first integrated circuit, one end of the second resistor is connected to the third pin of the first integrated circuit, one end of the second capacitor is connected to the seventh pin of the first integrated circuit, the other end of the third resistor and one end of the fourth resistor are connected to the eighth pin of the first integrated circuit, the other end of the first capacitor, the other end of the second capacitor, the negative electrode of the third capacitor, the other end of the first resistor, the other end of the second resistor, and the other end of the fourth resistor are connected to the fifth pin of the first integrated circuit, and the connection end thereof is the negative electrode of the boost conversion circuit.

3. The LED filament lamp circuit with emergency lighting function according to claim 1, characterized in that The detection control circuit includes a second integrated circuit of model QW2886L, a fifth resistor, a sixth resistor and a fourth capacitor. One end of the fifth resistor is connected to the VL pin of the second integrated circuit, one end of the sixth resistor is connected to the VN pin of the second integrated circuit, the other end of the fifth resistor is the zero line input end of the detection control circuit, the other end of the sixth resistor is the live line input end of the detection control circuit, one end of the fourth capacitor is connected to the BATP pin of the second integrated circuit, and its connection end is simultaneously the charging input end of the detection control circuit and the positive connection end of the battery, the other end of the fourth capacitor is connected to the BATN pin of the second integrated circuit, and its connection end is the negative connection end of the battery of the detection control circuit, the EN pin of the second integrated circuit is the output end of the detection control circuit, and the GND pin of the second integrated circuit is the negative pole of the detection control circuit.

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