A control circuit for a constantly on emergency light

Abstract

The present invention provides a control circuit for a constantly on emergency light, comprising: an emergency light driving part and a main switch part; the main switch part comprises a switch arranged on a live line, a signal generating module, and a first rectifier and transformer module; the first rectifier and transformer module converts mains power into direct current and then supplies power to the signal generating module; a first gear position of the switch is used to connect the signal generating module with the emergency light driving part, and a second gear position is used to disconnect the signal generating module from the emergency light driving part; the emergency light driving part comprises a signal recognition switch and a backup power supply; when the signal recognition switch does not receive a signal output by the signal generating module, the signal recognition switch is in a closed state, and the emergency light is powered by the mains power or the backup power supply and illuminates.

Description

Technical Field

[0001] The present invention relates to the field of lighting, and in particular to an emergency light. Background Art

[0002] Conventional lamps extinguish in emergencies (such as fires, earthquakes, and other unexpected power outages) due to a loss of grid power. Conventional emergency lamps, on the other hand, illuminate for emergency lighting when the circuit is open. They are usually idle, requiring maintenance to open the internal circuit or inspect each lamp individually. As a result, emergency lighting utilization is low and idle rates are high, resulting in a waste of resources. Furthermore, emergency lighting maintenance is complex. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide a control circuit for a constantly on emergency light. When the mains power is on normally, the emergency light is used as a conventional lighting fixture. When the mains power is off, the emergency light is lit using a backup power supply. In this way, the emergency light can be lit normally both when the mains power is on and when the mains power is off, thereby increasing the utilization rate of the emergency light.

[0004] In order to solve the above technical problems, the present invention provides a control circuit for a constantly on emergency light, comprising: an emergency light driving part and a main switch part;

[0005] The main switch portion includes a switch provided on the live line, a signal generating module, and a first rectifier-transformer module; the first rectifier-transformer module converts the mains power into direct current and supplies power to the signal generating module; the first position of the switch is used to connect the signal generating module to the emergency light driver portion, and the second position is used to disconnect the signal generating module from the emergency light driver portion;

[0006] The emergency light driving part includes a signal recognition switch and a backup power supply; when the signal recognition switch does not receive the signal output by the signal generating module, the signal recognition switch is closed and the emergency light is powered by the mains or the backup power supply.

[0007] The same-name end of the switch is connected to the emergency light driving part via a live wire, the first gear is connected to the live wire, and the second gear is connected to the signal generating module; the emergency light driving part also includes a second rectifier and transformer module connected between the live wire and the neutral wire, which converts the mains power into direct current and then supplies power to the emergency light;

[0008] The switch is a three-position switch, and its third position is used to disconnect the emergency light driving part from the signal generating module and the mains power at the same time; when the three-position switch is in the third position, the signal generating module is disconnected from the emergency light driving part, and the live wire part of the emergency light is grounded; if the backup power supply and the emergency light are normal, the emergency light will light up; if the backup power supply or the emergency light fails, the emergency light will go out.

[0009] In a preferred embodiment, the signal generating module is a pulse signal module.

[0010] In a preferred embodiment, when the three-position switch is in the second position, the signal generating module is disconnected from the emergency light driving part, the signal recognition switch is turned off, and the emergency light is powered by the mains or the backup power supply.

[0011] In a preferred embodiment, when the three-position switch is in the first position, the signal generating module is connected to the emergency light driving part; at this time, if the mains power is normally on, the signal generating module sends the signal normally, the signal recognition switch is disconnected, and the emergency light goes out;

[0012] If the mains power is cut off, the signal sending module stops sending signals, the signal recognition switch is turned off, and the emergency light lights up.

[0013] In a preferred embodiment: the main switch part also includes a second backup power supply. When the main power is normally cut off, the second backup power supply supplies power to the signal generating module and places the switch in the first gear.

[0014] In a preferred embodiment, when the three-position switch is in the first position, the signal generating module is connected to the emergency light driving part; at this time, if the mains power is normally on, the signal generating module sends the signal normally, the signal recognition switch is disconnected, and the emergency light goes out;

[0015] If the mains power is cut off, the second backup power supply drives the signal sending module to continue sending signals, the signal recognition switch is disconnected, and the emergency light goes out.

[0016] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0017] This invention enables conventional lamps to autonomously illuminate as supplemental emergency lighting when no external power is supplied, based on their switch status. This circuit can be implemented without modifying existing mains or shopping mall circuits. A single main switch is all that's needed to coordinate a set of continuously on emergency lighting fixtures, while maintaining the functionality of other conventional lamps on the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a control circuit module diagram of the emergency light in the preferred embodiment 1 of the present invention;

[0019] Figure 2 This is a circuit module diagram of the emergency light driving part in the preferred embodiment 1 of the present invention;

[0020] Figure 3 This is a control circuit module diagram of the emergency light in preferred embodiment 2 of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] refer to Figure 1 and Figure 2 , a control circuit of a constantly on emergency light, comprising: an emergency light driving part 1 and a main switch part 2;

[0024] The main switch part 2 includes a switch 21 provided on the live line, a signal generating module 22, and a first rectifier and transformer module 23. The first rectifier and transformer module 23 converts the mains power into direct current and supplies power to the signal generating module 22. The first gear position of the switch 21 is used to connect the signal generating module 22 to the emergency light driving part 1, and the second gear position is used to disconnect the signal generating module 22 from the emergency light driving part 1.

[0025] The emergency light driving part 1 includes a signal recognition switch 11 and a backup power supply 12; when the signal recognition switch 11 does not receive the signal output by the signal generating module 22, the signal recognition switch 11 is in the closed state, and the emergency light is powered by the mains or the backup power supply 12.

[0026] Therefore, users can use the existing lighting fixture as the emergency light driver 1 and then install the main switch 2. Simply flipping the switch to the second position will prevent the signal generator 22 from connecting to the emergency light driver, regardless of whether the mains is on or off. This allows the emergency light to draw power from the mains when it is functioning properly and from the backup power source 12 when it is not. This ensures that the emergency light remains constantly on.

[0027] To turn off the emergency light, switch 21 can be moved to the first position. At this point, the signal generating module 22 is connected to the emergency light driver 1. If the mains power is functioning normally, the signal generating module 22, driven by the DC power output by the first rectifier and transformer module 23, outputs a signal to the signal recognition switch 11, disconnecting it. This effectively turns off the emergency light. However, if the mains power fails, while the signal generating module 22 remains connected to the signal recognition switch 11, the first rectifier and transformer module 23 will not output DC power, and the signal generating module 22 will not output a signal. Therefore, the emergency light will re-ignite in the event of a mains power outage. In other words, whether switch 21 is moved to the first or second position, the emergency light will remain illuminated and function properly in the event of a mains power outage, ensuring its effectiveness as an emergency lighting fixture.

[0028] In order to achieve the above effect, the specific circuit connection relationship is as follows: the same-name end of the switch 21 is connected to the emergency light driving part 1 through the live wire, the first gear is connected to the live wire, and the second gear is connected to the signal generating module 22.

[0029] The emergency light driving part 1 further includes a second rectifying and transforming module 13 connected between the live wire and the neutral wire, which converts the mains power into direct current power and then supplies power to the emergency light.

[0030] In this embodiment, the signal generating module is a 22-bit pulse signal module, and other signals can also be selected as long as they can be recognized by the signal recognition switch.

[0031] In this embodiment, in order to make the inspection and maintenance of the emergency light easier, the switch 21 is a three-position switch 21, and its third position is used to disconnect the emergency light driving part 1 from the signal generating module 22 and the mains at the same time. Specifically, the third position is grounded.

[0032] Therefore, when the switch 21 is in the third position, the signal generating module 22 is disconnected from the emergency light driving unit 1, and the live wire of the emergency light is grounded. If the backup power supply 12 and the emergency light are normal, the emergency light will light up. If the backup power supply 12 or the emergency light fails, the emergency light will go out. This allows for quick maintenance of the emergency light.

[0033] Example 2

[0034] refer to Figure 3 In this embodiment, the main switch part 2 also includes a second backup power supply 24. When the main power is normally cut off, the second backup power supply 24 supplies power to the signal generating module 22 and places the switch 21 in the first gear.

[0035] When the three-position switch 21 is in the first position, the signal generating module 22 is connected to the emergency light driving part 1; at this time, if the mains power is normally powered on, the signal generating module 22 sends the signal normally, the signal recognition switch 11 is disconnected, and the emergency light goes out; if the mains power is cut off, the second backup power supply 12 drives the signal sending module to continue sending the signal, the signal recognition switch 11 is disconnected, and the emergency light goes out.

[0036] This structure ensures that the emergency light is always on when the switch 21 is in the second gear and is always off when in the first gear. The rest of the structure is the same as that of embodiment 1 and will not be described in detail.

[0037] The above is only a preferred specific embodiment of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with this technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the scope of protection of the present invention.

Claims

1. A control circuit for a constantly on emergency light, characterized in that include: Emergency light driving part and main switch part; The main switch portion includes a switch provided on the live line, a signal generating module, and a first rectifier-transformer module; the first rectifier-transformer module converts the mains power into direct current and supplies power to the signal generating module; the first position of the switch is used to connect the signal generating module to the emergency light driver portion, and the second position is used to disconnect the signal generating module from the emergency light driver portion; The emergency light driving part includes a signal recognition switch and a backup power supply; when the signal recognition switch does not receive the signal output by the signal generating module, the signal recognition switch is closed and the emergency light is powered by the mains or the backup power supply. The same-name end of the switch is connected to the emergency light driving part via a live wire, the first gear is connected to the live wire, and the second gear is connected to the signal generating module; the emergency light driving part also includes a second rectifier and transformer module connected between the live wire and the neutral wire, which converts the mains power into direct current and then supplies power to the emergency light; The switch is a three-position switch, and its third position is used to disconnect the emergency light driving part from the signal generating module and the mains power at the same time; when the three-position switch is in the third position, the signal generating module is disconnected from the emergency light driving part, and the live wire part of the emergency light is grounded; if the backup power supply and the emergency light are normal, the emergency light will light up; if the backup power supply or the emergency light fails, the emergency light will go out.

2. The control circuit of a continuously on emergency light according to claim 1, characterized in that: The signal generating module is a pulse signal module.

3. The control circuit of a continuously on emergency light according to claim 1, characterized in that: The main switch part also includes a second backup power supply. When the main power is normally cut off, the second backup power supply supplies power to the signal generating module and places the switch in the first gear.

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