Emergency lamp control circuit and emergency lighting equipment

Abstract

The embodiment of the utility model discloses an emergency lamp control circuit and emergency lighting equipment, the circuit comprises a transformation rectification module, a switch module, a driving module, an emergency lamp and an energy storage power supply, the driving module is respectively connected with the transformation rectification module and the switch module, and the switch module is respectively connected with the energy storage power supply and the emergency lamp; the voltage transformation and rectification module is used for outputting direct-current voltage to charge the energy storage power supply when the power grid is online; when the driving module does not receive the direct-current voltage, the driving module outputs a second driving signal to control the switch module to be switched on, so that the energy storage power supply supplies power to the emergency lamp; when receiving the DC voltage, the driving module outputs a first driving signal to disconnect the switch module so as to cut off the power supply loop of the emergency lamp. The switch module provided by the embodiment of the utility model cuts off an emergency lamp power supply loop on line in a power grid, so that the power grid supplies power to the energy storage power supply; when the power grid is powered down, the energy storage power supply supplies power to the emergency lamp, and the control circuit and the control logic of the emergency lamp are simplified.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the field of electronic technology, and particularly to an emergency light control circuit and an emergency lighting device. Background Art

[0002] Emergency lights are the general term for lighting fixtures used for emergency lighting. The emergency lighting system mainly includes emergency lighting for accidents, emergency exit signs and indicator lights, which are set up to guide trapped people to evacuate or carry out rescue operations after the normal lighting power supply is cut off in the event of a disaster.

[0003] Existing emergency lights are designed to automatically light up when the power grid is disconnected. Specifically, it is achieved through a power detection circuit built into the emergency light. When the power detection circuit detects a disconnected power grid, the emergency light will automatically switch to a backup power supply (usually a battery) and light up. In this process, it involves complex detection circuits and control circuits, with high costs, and requires regular manual maintenance to avoid the failure of the detection circuit and the control circuit. Summary of the Utility Model

[0004] The main technical problem to be solved by the embodiments of the present utility model is to provide an emergency light control circuit and an emergency light, which can solve problems such as complex control of existing emergency lights.

[0005] To solve the above technical problem, a technical solution adopted by the present utility model is: to provide an emergency light control circuit, including: a step-down rectification module, a switch module, a driving module, an emergency light and an energy storage power supply. The step-down rectification module is connected to the power grid, the driving module is respectively connected to the step-down rectification module and the switch module, and the switch module is respectively connected to the energy storage power supply and the emergency light; the step-down rectification module is used to output a DC voltage when the power grid is online to charge the energy storage power supply; the driving module is used to output a second driving signal to control the switch module to conduct when the DC voltage is not received, so that the energy storage power supply supplies power to the emergency light; the driving module is further used to output a first driving signal to make the switch module disconnect when the DC voltage is received, so as to cut off the power supply circuit of the emergency light.

[0006] In some embodiments, the driving module includes a switch unit and a voltage dividing unit. The voltage dividing unit is respectively connected to the step-down rectification module and the switch unit, and the switch unit is connected to the switch module; the voltage dividing unit is used to output a first control signal to the switch unit when the DC voltage is received, so that the switch unit outputs the first driving signal; the voltage dividing unit is further used to output a second control signal to the switch unit when the DC voltage is not received, so that the switch unit outputs the second driving signal.

[0007] In some embodiments, the switch module includes a diode D2, a triode Q3, and a capacitor C2. The anode of the diode D2 is connected to the power output terminal of the drive module. The cathode of the diode D2 is respectively connected to the emitter of the triode Q3 and the positive electrode of the energy storage power supply. The base of the triode Q3 is respectively connected to the first end of the capacitor C2 and the signal output terminal of the drive module. The collector of the triode Q3 is connected to the first end of the emergency lamp. The second end of the capacitor C2, the negative electrode of the energy storage power supply, and the second end of the emergency lamp are grounded.

[0008] In some embodiments, the switch module further includes a control switch K2. The first end of the control switch K2 is respectively connected to the cathode of the diode D2 and the positive electrode of the energy storage power supply. The second end of the control switch K2 is connected to the emitter of the triode Q3.

[0009] In some embodiments, the voltage dividing unit includes a capacitor C3, a resistor R1, and a resistor R2. The first end of the resistor R1 is respectively connected to the input terminal of the switch unit and the output terminal of the voltage transformation and rectification module. The second end of the resistor R1 is respectively connected to the first end of the resistor R2, the first end of the capacitor C3, and the controlled terminal of the switch unit. The second end of the resistor R2 and the second end of the capacitor C3 are grounded.

[0010] In some embodiments, the switch unit includes a diode D3, a resistor R5, a triode Q4, and a resistor R4. The anode of the diode D3 is respectively connected to the input terminal of the voltage dividing unit and the output terminal of the voltage transformation and rectification module. The cathode of the triode D3 is respectively connected to the first end of the resistor R5 and the input terminal of the switch module. The second end of the resistor R5 is connected to the collector of the triode Q4. The base of the triode Q4 is connected to the output terminal of the voltage dividing unit. The emitter of the triode Q4 is respectively connected to the first end of the resistor R4 and the controlled terminal of the switch module. The second end of the resistor R4 is grounded.

[0011] In some embodiments, the voltage transformation and rectification module includes a voltage transformation unit and a rectification unit. The input terminal of the voltage transformation unit is connected to the power grid. The output terminal of the voltage transformation unit is connected to the input terminal of the rectification unit. The output terminal of the rectification unit is connected to the input terminal of the drive module.

[0012] In some embodiments, the voltage conversion unit includes a transformer T3, the rectification unit includes a rectifier bridge D1 and a capacitor C1. The first end of the primary side of the transformer T3 is connected to the live wire of the power grid, and the second end of the primary side of the transformer T3 is connected to the neutral wire of the power grid. The first end of the secondary side of the transformer T3 is connected to the first input terminal of the rectifier bridge D1, the second end of the secondary side of the transformer T3 and the second input terminal of the rectifier bridge D1 are grounded. The first output terminal of the rectifier bridge D1 is connected to the first end of the capacitor C1 and the input terminal of the drive module, and the second input terminal of the rectifier bridge D1 and the second end of the capacitor C1 are grounded.

[0013] In some embodiments, the voltage conversion unit further includes a control switch K1. The first end of the control switch K1 is connected to the live wire of the power grid, and the second end of the control switch K1 is connected to the first end of the primary side of the transformer T3.

[0014] To solve the above technical problems, another technical solution adopted by the present utility model is to provide an emergency lighting device, including: the emergency light control circuit as described above.

[0015] The beneficial effects of the embodiments of the present utility model are as follows: Different from the prior art, when the power grid is online, the switch module provided in the embodiments of the present utility model disconnects the emergency light in response to the first drive signal output by the drive module, so that the power grid supplies power to the energy storage power supply; and when the power grid loses power, the connection between the energy storage power supply and the emergency light is conducted, so that the energy storage power supply supplies power to the emergency light. The intelligent switching of the emergency light is realized, the control circuit and control logic of the emergency light are simplified, thereby improving the reliability of the emergency light and reducing the cost of the emergency light. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an emergency light control circuit provided by an embodiment of the present utility model;

[0017] Figure 2 is a schematic structural diagram of a drive module provided by an embodiment of the present utility model;

[0018] Figure 3 is a schematic structural diagram of a voltage conversion and rectification module provided by an embodiment of the present utility model;

[0019] Figure 4 is a circuit structure diagram of an emergency light control circuit provided by an embodiment of the present utility model;

[0020] Figure 5 is a circuit structure diagram of another emergency light control circuit provided by an embodiment of the present utility model. Detailed Embodiments

[0021] For ease of understanding the present utility model, the present utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in this specification in the description of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0023] An embodiment of the present application provides an emergency light control circuit, and its structural schematic diagram is as Figure 1 shown. The emergency light control circuit includes a voltage transformation and rectification module 100, a driving module 200, a switching module 300, an emergency light 400 and an energy storage power supply 500.

[0024] Among them, the input end of the voltage transformation and rectification module 100 is connected to the power grid 20, the input end of the driving module 200 is connected to the output end of the voltage transformation and rectification module 100, the output end of the driving module 200 is connected to the controlled end of the switching module 300, the input end of the switching module 300 is connected to the energy storage power supply 500, and the output end of the switching module 300 is connected to the emergency light 400.

[0025] The voltage transformation and rectification module 100 is used to output a DC voltage when the power grid 20 is online to charge the energy storage power supply 500; when the power grid 20 loses power, the voltage transformation and rectification module 100 has no output.

[0026] The driving module 200 is used to output a second driving signal to control the switching module 300 to conduct when no DC voltage is received, that is, when the power grid 20 loses power, so as to form a power supply loop for the energy storage power supply 500 and the emergency light 400, and the energy storage power supply 500 supplies power to the emergency light 400.

[0027] The driving module 200 is also used to output a first driving signal to make the switching module 300 disconnect when a DC voltage is received, that is, when the power grid 20 is online, so as to cut off the power supply loop of the emergency light 400.

[0028] In some embodiments of the present application, a driving module is provided, and its structural schematic diagram is as Figure 2As shown, the driving module includes a voltage dividing unit 210 and a switching unit 220.

[0029] The input end of the voltage dividing unit 210 is connected to the output end of the voltage transformation and rectification module 100, the output end of the voltage dividing unit 210 is connected to the controlled end of the switching unit 220, and the output end of the switching unit 220 is connected to the controlled end of the switching module 300.

[0030] The voltage dividing unit 210 is configured to output a first control signal to the switching unit 220 when receiving a DC voltage, so that the switching unit 220 outputs a first driving signal to the controlled end of the switching module 300.

[0031] The voltage dividing unit 210 is further configured to output a second control signal to the switching unit 220 when not receiving a DC voltage, so that the switching unit outputs a second driving signal to the controlled end of the switching module 300.

[0032] In some embodiments of the present application, a voltage transformation and rectification module is provided, and its structural schematic diagram is as Figure 3 shown. The voltage transformation and rectification module includes a voltage transformation unit 110 and a rectification unit 120.

[0033] The input end of the voltage transformation unit 110 is connected to the power grid 20, the output end of the voltage transformation unit 110 is connected to the input end of the rectification unit 120, and the output end of the rectification unit 120 is connected to the input end of the driving module 200.

[0034] The voltage transformation unit 110 is configured to transform the AC voltage input from the power grid to reduce the AC voltage; the rectification unit 120 is configured to rectify the stepped-down AC voltage to output a DC voltage to the driving module 200.

[0035] In some embodiments of the present application, a circuit structure of an emergency light control circuit is provided, as Figure 4 shown. Among them, the switching module 300 includes a diode D2, a triode Q3, and a capacitor C2.

[0036] The anode of the diode D2 is connected to the power output end of the driving module 200 (i.e., Figure 4 the cathode of the diode D3 shown), the cathode of the diode D2 is respectively connected to the emitter of the triode Q3 and the positive pole of the energy storage power supply 500, and the base of the triode Q3 is respectively connected to the first end of the capacitor C2 and the signal output end of the driving module 200 (i.e., Figure 4 the emitter of the triode Q1 shown).

[0037] The collector of the triode Q3 is connected to the first end of the emergency light 400, and the second end of the capacitor C2, the negative pole of the energy storage power supply 500, and the second end of the emergency light 400 are grounded.

[0038] The voltage division unit 210 includes a capacitor C3, a resistor R1, and a resistor R2. The first end of the resistor R1 is respectively connected to the input end of the switch unit 220 (i.e., Figure 4 the anode of the diode D3 shown), and the output end of the transformer rectification module 100 (i.e., Figure 4 the first end of the capacitor C1 shown). The second end of the resistor R1 is respectively connected to the first end of the resistor R2, the first end of the capacitor C3, and the controlled end of the switch unit 220 (i.e., Figure 4 the base of the triode Q4 shown). The second ends of the capacitor C1, the resistor R2, and the capacitor C3 are grounded.

[0039] The switch unit 220 includes a diode D3, a resistor R5, a triode Q4, and a resistor R4. The anode of the diode D3 is respectively connected to the input end of the voltage division unit 210 (i.e., Figure 4 the first end of the resistor R1 shown), and the output end of the transformer rectification module 100 (i.e., Figure 4 the first end of the capacitor C1 shown). The cathode of the triode D3 is respectively connected to the first end of the resistor R5 and the input end of the switch module 300 (i.e., Figure 4 the anode of the diode D2 shown). The second end of the resistor R5 is connected to the collector of the triode Q4. The base of the triode Q4 is connected to the output end of the voltage division unit 210 (i.e., Figure 4 the second end of the resistor R1 shown). The emitter of the triode Q4 is respectively connected to the first end of the resistor R4 and the controlled end of the switch module 300 (i.e., Figure 4 the base of the triode Q3 shown). The second end of the resistor R4 is grounded.

[0040] The transformer unit 110 includes a transformer T3. The rectification unit 120 includes a rectifier bridge D1 and a capacitor C1. The first end of the primary side of the transformer T3 is connected to the live wire of the power grid 20, and the second end of the primary side of the transformer T3 is connected to the neutral wire of the power grid 20.

[0041] The first end of the secondary side of the transformer T3 is connected to the first input terminal of the rectifier bridge D1. The second end of the secondary side of the transformer T3 is grounded to the second input terminal of the rectifier bridge D1. The first output terminal of the rectifier bridge D1 is connected to the first end of the capacitor C1 and the input end of the drive module 200 (i.e., Figure 4 the first end of the resistor R1 shown). The second input terminal of the rectifier bridge D1 is grounded to the second end of the capacitor C1.

[0042] Specifically, when the power grid 20 is online, the power grid outputs an AC voltage of 220V to the transformer T3 for step-down, and then through the rectifier bridge D1, it is rectified into a DC voltage. This DC voltage is divided by the resistor R1 and the resistor R2. It should be noted that the resistance value of the resistor R2 is much larger than that of the resistor R1. Therefore, the voltage across the resistor R2 is relatively high, that is, the voltage of the capacitor C3 is high, so the triode Q4 conducts. At this time, the base voltage of the triode Q1 is greater than the emitter voltage of the triode Q1, so the triode Q1 is cut off, and then the triode Q3 is also cut off. At this time, the emergency light 400 is not lit. At this time, after the AC voltage output by the power grid 20 is stepped down and rectified, the output DC voltage charges the energy storage power supply 500 through the diode D3 and the diode D2.

[0043] By way of example and not limitation, the transformer T3 is a power frequency transformer with a ratio of 16:1, the triode Q4 is an NPN triode, the triode Q1 is a PNP triode, and the triode Q3 is a PNP triode.

[0044] When the power grid 20 loses power, at this time, the voltage across the capacitor C1 is 0V, and the base voltage of the triode Q4 is 0V, so the triode Q4 is cut off; the base of the triode Q1 is connected to the resistor R4 to the ground, so the triode Q1 conducts, and then the triode Q3 also conducts, forming a power supply circuit for the emergency light 400, that is, the energy storage power supply, the triode Q3, the emergency light and the ground form a circuit, so the emergency light 400 lights up.

[0045] In some other embodiments of the present application, another circuit structure of the emergency light control circuit is provided, as Figure 5 shown, wherein the switch module 300 includes a diode D2, a triode Q3, a capacitor C2 and a control switch K2.

[0046] The anode of the diode D2 is connected to the power output terminal of the drive module 200 (i.e., Figure 5 the cathode of the diode D3 shown), the cathode of the diode D2 is respectively connected to the first end of the control switch K2 and the positive pole of the energy storage power supply 500, the second end of the control switch K2 is connected to the emitter of the triode Q3, and the base of the triode Q3 is respectively connected to the first end of the capacitor C2 and the signal output terminal of the drive module 200 (i.e., Figure 5 the emitter of the triode Q1 shown).

[0047] The collector of the triode Q3 is connected to the first end of the emergency light 400, and the second end of the capacitor C2, the negative pole of the energy storage power supply 500 and the second end of the emergency light 400 are grounded.

[0048] The voltage dividing unit 210 includes a capacitor C3, a resistor R1 and a resistor R2. The first end of the resistor R1 is respectively connected to the input end of the switch unit 220 (i.e., Figure 5 the anode of the diode D3 shown) and the output end of the step-down rectification module 100 (i.e.,Figure 5 is connected to the first end of the capacitor C1 shown), the second end of the resistor R1 is respectively connected to the first end of the resistor R2, the first end of the capacitor C3, and the controlled end of the switch unit 220 (i.e., Figure 5 the base of the transistor Q4 shown), and the second end of the capacitor C1, the second end of the resistor R2, and the second end of the capacitor C3 are grounded.

[0049] The switch unit 220 includes a diode D3, a resistor R5, a transistor Q4, and a resistor R4. The anode of the diode D3 is respectively connected to the input end of the voltage dividing unit 210 (i.e., Figure 5 the first end of the resistor R1 shown) and the output end of the voltage transformation and rectification module 100 (i.e., Figure 5 the first end of the capacitor C1 shown), the cathode of the transistor D3 is respectively connected to the first end of the resistor R5 and the input end of the switch module 300 (i.e., Figure 5 the anode of the diode D2 shown), the second end of the resistor R5 is connected to the collector of the transistor Q4, the base of the transistor Q4 is connected to the output end of the voltage dividing unit 210 (i.e., Figure 5 the second end of the resistor R1 shown), the emitter of the transistor Q4 is respectively connected to the first end of the resistor R4 and the controlled end of the switch module 300 (i.e., Figure 5 the base of the transistor Q3 shown), and the second end of the resistor R4 is grounded.

[0050] The voltage transformation unit 110 includes a control switch K1 and a transformer T3. The rectification unit 120 includes a rectifier bridge D1 and a capacitor C1. The first end of the control switch K1 is connected to the live wire of the power grid 20, the second end of the control switch K1 is connected to the first end of the primary side of the transformer T3, and the second end of the primary side of the transformer T3 is connected to the neutral wire of the power grid 20.

[0051] The first end of the secondary side of the transformer T3 is connected to the first input terminal of the rectifier bridge D1, the second end of the secondary side of the transformer T3 is grounded to the second input terminal of the rectifier bridge D1, the first output terminal of the rectifier bridge D1 is connected to the first end of the capacitor C1 and the input end of the driving module 200 (i.e., Figure 5 the first end of the resistor R1 shown), and the second input terminal of the rectifier bridge D1 is grounded to the second end of the capacitor C1.

[0052] The specific working principle is the same as that of the above embodiment and will not be elaborated here. The difference from the previous embodiment is that a control switch K1 and a control switch K2 are provided in this embodiment. Among them, the control switch K2 is the internal switch of the emergency light 400. When the control switch K2 is closed, the emergency light 400 lights up, and when the control switch K2 is opened, the emergency light 400 does not work.

[0053] Different from the prior art, when the power grid is online, the switch module provided in the embodiment of the present utility model disconnects the emergency lamp in response to the first driving signal output by the driving module, so that the power grid supplies power to the energy storage power supply; and when the power grid loses power, it conducts the connection between the energy storage power supply and the emergency lamp, so that the energy storage power supply supplies power to the emergency lamp. The intelligent switching of the emergency lamp is realized, the control circuit and control logic of the emergency lamp are simplified, thereby improving the reliability of the emergency lamp and reducing the cost of the emergency lamp.

[0054] Based on the emergency lamp control circuit provided in the above embodiment, the present application also provides an emergency lighting device, which includes the emergency lamp control circuit described in any of the above embodiments.

[0055] It should be noted that the description and drawings of the present utility model give preferred embodiments of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not additional limitations to the content of the present utility model. The purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Furthermore, the above technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as within the scope described in the description of the present utility model; further, for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present utility model.

Claims

1. An emergency light control circuit, characterized in that, Including: a step-down rectification module, a switching module, a driving module, an emergency lamp and an energy storage power supply, the step-down rectification module is connected to the power grid, the driving module is respectively connected to the step-down rectification module and the switching module, and the switching module is respectively connected to the energy storage power supply and the emergency lamp; the step-down rectification module is used to output a DC voltage when the power grid is online to charge the energy storage power supply; the driving module is used to output a second driving signal to control the switching module to conduct when the DC voltage is not received, so that the energy storage power supply supplies power to the emergency lamp; the driving module is further used to output a first driving signal to disconnect the switching module when the DC voltage is received, so as to cut off the power supply circuit of the emergency lamp.

2. The circuit according to claim 1, wherein, The driving module includes a switching unit and a voltage dividing unit, the voltage dividing unit is respectively connected to the step-down rectification module and the switching unit, and the switching unit is connected to the switching module; the voltage dividing unit is used to output a first control signal to the switching unit when the DC voltage is received, so that the switching unit outputs the first driving signal; the voltage dividing unit is further used to output a second control signal to the switching unit when the DC voltage is not received, so that the switching unit outputs the second driving signal.

3. The circuit according to claim 1, characterized in that, The switching module includes a diode D2, a triode Q3 and a capacitor C2, the anode of the diode D2 is connected to the power output terminal of the driving module, the cathode of the diode D2 is respectively connected to the emitter of the triode Q3 and the positive electrode of the energy storage power supply, and the base of the triode Q3 is respectively connected to the first end of the capacitor C2 and the signal output terminal of the driving module; the collector of the triode Q3 is connected to the first end of the emergency lamp, and the second end of the capacitor C2, the negative electrode of the energy storage power supply and the second end of the emergency lamp are grounded.

4. The circuit according to claim 3, wherein The switching module further includes a control switch K2, the first end of the control switch K2 is respectively connected to the cathode of the diode D2 and the positive electrode of the energy storage power supply, and the second end of the control switch K2 is connected to the emitter of the triode Q3.

5. The circuit according to claim 2, wherein The voltage dividing unit includes a capacitor C3, a resistor R1 and a resistor R2, the first end of the resistor R1 is respectively connected to the input end of the switching unit and the output end of the step-down rectification module, the second end of the resistor R1 is respectively connected to the first end of the resistor R2, the first end of the capacitor C3 and the controlled end of the switching unit, and the second end of the resistor R2 is grounded with the second end of the capacitor C3.

6. The circuit according to claim 2, wherein The switching unit includes a diode D3, a resistor R5, a triode Q4 and a resistor R4, The anode of the diode D3 is respectively connected to the input end of the voltage dividing unit and the output end of the voltage transformation and rectification module. The cathode of the diode D3 is respectively connected to the first end of the resistor R5 and the input end of the switch module. The second end of the resistor R5 is connected to the collector of the triode Q4. The base of the triode Q4 is connected to the output end of the voltage dividing unit. The emitter of the triode Q4 is respectively connected to the first end of the resistor R4 and the controlled end of the switch module. The second end of the resistor R4 is grounded.

7. The circuit according to any one of claims 1-6, characterized in that, The voltage transformation and rectification module includes a voltage transformation unit and a rectification unit. The input end of the voltage transformation unit is connected to the power grid. The output end of the voltage transformation unit is connected to the input end of the rectification unit. The output end of the rectification unit is connected to the input end of the drive module.

8. The circuit according to claim 7, wherein The voltage transformation unit includes a transformer T3. The rectification unit includes a rectifier bridge D1 and a capacitor C1. The first end of the primary side of the transformer T3 is connected to the live wire of the power grid. The second end of the primary side of the transformer T3 is connected to the neutral wire of the power grid. The first end of the secondary side of the transformer T3 is connected to the first input end of the rectifier bridge D1. The second end of the secondary side of the transformer T3 is grounded at the second input end of the rectifier bridge D1. The first output end of the rectifier bridge D1 is connected to the first end of the capacitor C1 and the input end of the drive module. The second input end of the rectifier bridge D1 is grounded at the second end of the capacitor C1.

9. The circuit according to claim 8, wherein The voltage transformation unit further includes a control switch K1. The first end of the control switch K1 is connected to the live wire of the power grid. The second end of the control switch K1 is connected to the first end of the primary side of the transformer T3.

10. An emergency lighting device, characterized in that, Comprising: The emergency light control circuit according to any one of claims 1-9.

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