An emergency lighting device

Abstract

This application discloses an emergency lighting device. The device is equipped with an adjustment switch SW, which can be a slide switch used to adjust the color temperature. The adjustment switch SW is equipped with a voltage regulator, which can be a Zener diode, a resistor, an inductor, or a combination thereof. When adjusting the color temperature, the slide switch switches from one color temperature to another. During this switching process, an unloaded state occurs. During this unloaded state, the voltage rises, causing the voltage regulator to conduct and generate a small current. When the switching ends, the Zener diode or resistor is in a short-circuit state, producing no losses. This effectively reduces the current spikes generated during the switching process, protecting the LED chips and improving the reliability of the emergency lighting device.

Description

Technical Field

[0001] This application relates to the field of lighting technology, and more particularly to an emergency lighting device. Background Technology

[0002] Emergency lighting comes in two types: one type remains off when the mains power is normal, only illuminating when the mains power fails; the other type is an indicator emergency light that remains on regardless of whether the mains power is normal or not. When the mains power is normal, ordinary lighting provides illumination; when the mains power fails, the emergency lighting itself shuts off, and a dedicated emergency lighting unit provides illumination. The color temperature differs between normal and emergency lighting modes, and currently, there are no emergency lighting devices on the market with adjustable color temperature.

[0003] Therefore, existing emergency lighting systems need to be improved. Summary of the Invention

[0004] To overcome the aforementioned deficiencies, this application proposes a reliable emergency lighting device with adjustable color temperature. To achieve the above objective, this application adopts the following technical solution: An emergency lighting device, characterized in that it includes: a driving circuit, wherein the power driving circuit has: a constant current driving module, a selection switch module, a color temperature adjustment module, and a connection terminal; the selection switch module is connected to the constant current driving module and the color temperature adjustment module, enabling the emergency lighting device to operate in either a normal lighting mode or an emergency lighting mode; the color temperature adjustment module is connected to the connection terminal, the connection terminal being used to connect to a lamp board; the color temperature adjustment module has a color temperature adjustment switch, enabling the emergency lighting device to emit light of different color temperatures.

[0005] Preferably, the constant current drive module has: a first output terminal, a second output terminal, a third output terminal and a fourth output terminal, wherein the third output terminal and the fourth output terminal are used to connect to an emergency power supply.

[0006] Preferably, the connection terminal includes: a first color temperature port, a second color temperature port, and an LED-port, wherein the LED-port is electrically connected to a first output terminal or a third output terminal, and the first color temperature port and the second color temperature port are respectively connected to the matching terminal of the color temperature adjustment switch.

[0007] Preferably, in this emergency lighting device, voltage regulators ZD1 / ZD2 are respectively configured between the input terminal 6 of the color temperature adjustment switch and the first color temperature port 1 and the second color temperature port 2 of J33. The input terminal of the slide switch SW2 is connected to the second output terminal 8 or the fourth output terminal 7.

[0008] Preferably, the voltage regulator is a Zener diode, a resistor or an inductor, or a combination thereof.

[0009] This application also provides a control method for an emergency lighting device. When switching from emergency mode to normal lighting mode, the control module outputs electrical signals sequentially at its port to avoid damage to LED beads from current spikes and improve the reliability of the emergency lighting device. Beneficial effects

[0010] Compared with the prior art, the emergency lighting device provided in this application has the following advantages: the emergency lighting device has high reliability and avoids damage to LED beads from current spikes when switching to normal power supply lighting mode. Attached Figure Description

[0011] The accompanying drawings are provided to illustrate the technical solutions of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure. The shapes and sizes of the components in the drawings do not reflect actual proportions and are only intended to illustrate the content of this application.

[0012] Figure 1 This is a functional topology diagram of the emergency lighting device according to the first embodiment of this application;

[0013] Figure 2 This is a functional topology diagram of the emergency lighting device according to the second embodiment of this application;

[0014] Figure 3 for Figure 2 Functional topology diagram of the constant current drive module;

[0015] Figure 4 This is a schematic diagram of the drive timing for an emergency switch to mains power according to an embodiment of this application; and

[0016] Figure 5 This is a schematic diagram of the driving timing during inspection according to another embodiment of this application. Detailed Implementation

[0017] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0018] Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. In this document, "electrical connection" includes the situation where constituent elements are connected together by an element having some electrical function. There is no particular limitation on the "electrically functioning element," as long as it enables the transmission and reception of electrical signals between the connected constituent elements. An "electrically functioning element" can be, for example, an electrode or wiring, a switching element such as a transistor, or other functional elements such as a resistor, inductor, or capacitor. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0019] In this application, the terms "upper," "lower," "inner," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0020] This application provides an emergency lighting device equipped with a power drive circuit, which includes an IC module. A first port of the IC module is connected via a wire to a first switch and a first light-emitting module; a second port of the IC module is connected via a wire to a second light-emitting module; wherein the first and second light-emitting modules emit different color temperatures when operating.

[0021] The first light-emitting module includes: an LED lamp bead branch connected according to a certain rule, the LED lamp bead branch is connected in series with at least one resistor, a first voltage regulator is connected in parallel with one of the resistors, one end of the resistor is connected to one end of the first resistor, the other end of the first resistor is connected to the trigger terminal of switch Q2, the first end of switch Q2 is connected to the first switch via a wire, and the second end of switch Q2 is connected to the power supply terminal (VBAT).

[0022] The second light-emitting module includes: an LED lamp bead branch connected according to a certain rule, the LED lamp bead branch is connected in series with at least one resistor, a second voltage regulator is connected in parallel with one of the resistors, one end of the resistor is connected to one end of the second resistor, the other end of the second resistor is connected to the trigger terminal of switch Q4, the first end of switch Q4 is connected to the second port of IC module via a wire, and the second end of switch Q4 is connected to the power supply terminal (VBAT).

[0023] In this embodiment, the first switch can be a switch installed on a wall or the like (wall switch), and the first / second voltage regulator is a voltage regulator tube.

[0024] The emergency lighting device proposed in this application will now be described with reference to the accompanying drawings. Figure 1 The diagram shows a topology of an emergency lighting device according to an embodiment of this application. The emergency lighting device has a power drive circuit, which includes an IC module (also known as a main control module) and a detection module. The detection module includes a first detection module and a second detection module. The 10th port of the IC module is connected to a first switch and the first detection module via a wire. The 9th port of the IC module is connected to the second detection module via a wire. The 8th port of the IC module is grounded. Capacitors are respectively configured between the 9th and 10th ports and the ground to detect the power supply of the wall switch. The 11th port of the IC module is connected to a boost drive circuit to enable the emergency lighting device to operate in emergency lighting mode.

[0025] The first detection module includes: switch Q2, the trigger terminal of which is connected to one end of resistor R71, the other end of resistor R71 is connected to one end of resistor R9 and resistor R8, and resistor R8 is connected to L' via diode D4. The second detection module includes: switch Q4, the trigger terminal of which is connected to the live wire L via a resistor branch, the first end of switch Q4 is connected to port 9 of the IC module and resistor R77, and the second end of switch Q4 is connected to the power supply terminal VBAT. The other end of resistor R9 is electrically connected to capacitor C4 and Zener diode D4, which are connected in parallel with resistor R9. The branch is connected to the live wire L, the first end of switch Q4 is connected to port 9 of the IC module and resistor R77, and the second end of switch Q4 is connected to the power supply terminal VBAT.

[0026] When the emergency lighting device is operating in emergency mode, ports 9 and 10 output high levels, and port 7 outputs a high level to trigger the emergency unit to emit light. Port 11 of the IC module outputs a low level.

[0027] The following is combined Figure 1 and Figure 4 The description of the driving mechanism of an emergency lighting device according to an embodiment of this application, when there is mains power in emergency mode (also known as emergency switch to mains power), see [link to application]. Figure 4 ( Figure 4(After 2.5 seconds of horizontal scaling). Ports 9 and 10 of the IC module output high levels, port 11 outputs low levels, and port 7 outputs low levels. The emergency unit's circuit will be cut off first to shut down the boost drive circuit (boost1). Port 14 outputs low levels, and port 13 outputs high levels. This design avoids current spikes during emergency switching to AC power, reducing damage to the LED chips.

[0028] The following is combined Figure 1 and Figure 5 Describing the operation of an emergency lighting device according to an embodiment of this application during inspection, see [link to relevant documentation]. Figure 5 This is the port control timing sequence during inspection. When the inspection switch SW is pressed, port 1 (V1) of the IC module outputs a high level, SW outputs a low level, port 13 outputs a low level, port 14 outputs a high level, port 11 outputs a high level, and port 7 outputs a high level to trigger the emergency unit. At this time, the boost drive circuit (boost1) will receive the enable level signal in the emergency lighting mode, and start the operation of the boost drive circuit based on the enable level signal. That is, the circuit where the emergency unit is located is turned on for a detection time, such as 3 seconds. After a delay of 3 seconds, port 11 outputs a low level, port 7 outputs a low level, port 14 outputs a low level, port 13 outputs a high level, and then enters the normal mode.

[0029] like Figure 2 The diagram shown is a topological schematic of an emergency lighting device according to another embodiment of this application. The emergency lighting device includes a power drive circuit, which comprises a constant current drive module, a selection switch module, a color temperature adjustment module, and connection terminals.

[0030] The constant current drive module CC has: a first output terminal 5, a second output terminal 8, a third output terminal 4, and a fourth output terminal 7. The third output terminal 4 and the fourth output terminal 7 are connected to an emergency power supply. The constant current drive module CC can use an existing drive module, whose output is a constant current.

[0031] This connector is used to connect to a light panel (not shown in the figure). The light panel is equipped with a third light-emitting module (also known as a first light source module) and a fourth light-emitting module (also known as a second light source module) arranged according to certain rules. The light emitted by the third and fourth light-emitting modules has different color temperatures. For example, the third light-emitting module works for normal lighting, while the fourth light-emitting module works for emergency lighting.

[0032] The connection terminals include: a first color temperature port (e.g., 3000K), a second color temperature port (e.g., 6500K), and an LED-port. The LED-port is electrically connected to either the first output terminal 5 or the third output terminal 4.

[0033] The first color temperature port and the second color temperature port are respectively connected to the matching terminals of the slide switch SW2. A voltage regulator (such as a Zener diode) is configured between the input terminal of the slide switch SW2 and the first and second color temperature ports, respectively. The input terminal of the slide switch SW2 is connected to either the second output terminal 8 or the fourth output terminal 7.

[0034] The color temperature adjustment module includes a slide switch SW2, which is equipped with a voltage regulator. Moving the switch SW2 adjusts the color temperature. The voltage regulator is a Zener diode, a resistor, an inductor, or a combination thereof.

[0035] When adjusting the color temperature in this way, the sliding switch SW2 is used to switch from one color temperature to another (e.g., from 3000K to 6500K). During the switching process, there is an open circuit. During this open circuit, the voltage rises, causing the voltage regulator to conduct and generating a small current. When the switching ends, the voltage regulator or resistor is short-circuited (by the switch), resulting in no losses. This effectively reduces the current spikes generated during the switching process, protecting the LED chips and improving the reliability of the emergency lighting device.

[0036] The selection switch module includes a switch and a relay. The switch is used to connect the color temperature adjustment module to either the first output terminal 5 and the second output terminal 8, or the third output terminal 4 and the fourth output terminal 7. This allows the emergency lighting device to operate in normal lighting mode or emergency mode. In one embodiment, the selection switch module includes a switch and a relay RY1. The trigger terminal of the switch Q9 is electrically connected to the LED terminal via a resistor. A resistor R19 is disposed between the trigger terminal and the first terminal of the switch Q9, and the first terminal is electrically grounded. The second terminal of the switch Q9 is connected to the first terminal of the relay RY1, the second terminal of the relay RY1 is connected to one end of a capacitor C, and the other end of the capacitor C is connected to the first terminal of the switch Q9. The two ends of a Zener diode D14 are connected in parallel across the two ends of the relay RY1.

[0037] In one implementation, Figure 2 The topology diagram of the constant current drive module CC in the middle is as follows: Figure 3As shown. The constant current drive module CC includes: a chip module U. Terminal 1 (DRAIN terminal) of chip module U is connected to one end of capacitor C22, the positive terminal of diode D, and one end of inductor T1. Terminal 8 (VIN terminal) of chip module U is connected to one end of resistor R40. Terminal 3 (SOURCE terminal) of chip module U is connected to one end of resistor R32. Terminal 4 (SOURCE terminal) of chip module U is connected to one end of resistors R29 / 30 / 31 / 32. The other end of resistors R29 / 30 / 31 / 32 is electrically grounded. Terminal 6 (RTH / EN terminal) of chip module U is connected to one end of resistor R67. The other end of resistor R67 is grounded. The other end of C22 is connected to the negative terminal of diode D, one end of C23, one end of C65, one end of resistor R57, and output terminal 8. The other end of inductor T1 is electrically connected to the other end of C23, the other end of C65, the other end of resistor R57, and output terminal 5. A constant current is output through output terminals 5 / 8. One end of C24 is connected to the other end of inductor T1, and the other end of C24 is electrically grounded.

[0038] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be included within the scope of protection of this application.

Claims

1. An emergency lighting device, characterized in that, include: The first light source module has a first color temperature; The second light source module has a second color temperature; A light panel, wherein the first light source module and the second light source module are disposed on the light panel; A color temperature adjustment module is connected to the lamp panel via a connection terminal. The color temperature adjustment module has a color temperature adjustment switch, which enables the emergency lighting device to illuminate either the first light source module or the second light source module in response to the switching of the color temperature adjustment switch. A constant current drive module is electrically connected to the color temperature adjustment module; The selector switch module is connected to the color temperature adjustment module and the constant current drive module to control the emergency lighting device to work in normal lighting mode or emergency lighting mode. as well as The detection module is electrically connected to L' and the live wire L; as well as The main control module is electrically connected to the detection module and the boost drive circuit. When the emergency lighting device switches from the emergency lighting mode to the normal lighting mode, the main control module shuts down the boost drive circuit to reduce the damage of current spikes to the first light source module and the second light source module.

2. The emergency lighting device as described in claim 1, characterized in that, The constant current drive module has a first output terminal, a second output terminal, a third output terminal and a fourth output terminal, wherein the third output terminal and the fourth output terminal are used to connect to an emergency power supply.

3. The emergency lighting device as described in claim 2, characterized in that, The connection terminal includes: a first color temperature port, a second color temperature port, and an LED-port. The LED port is electrically connected to either the first output terminal or the third output terminal. The first color temperature port and the second color temperature port are respectively connected to the matching terminals of the color temperature adjustment switch.

4. The emergency lighting device as described in claim 3, characterized in that, A voltage regulator is configured between the input terminal of the color temperature adjustment switch and the first color temperature port and the second color temperature port, respectively.

5. The emergency lighting device as described in claim 1, characterized in that, The color temperature adjustment module is equipped with a voltage regulator.

6. The emergency lighting device as described in claim 4 or 5, characterized in that, The voltage regulator component is a Zener diode, a resistor or an inductor, or a combination thereof.

7. The emergency lighting device as described in claim 4, characterized in that, The color temperature adjustment switch is a slide switch, and its input terminal is connected to the second output terminal or the fourth output terminal.

8. The emergency lighting device as described in claim 1, characterized in that: It also includes: an emergency unit with a third color temperature; and The boost drive circuit is used to trigger the emergency unit based on the emergency power supply in the emergency lighting mode so that the emergency unit is lit. The boost drive circuit receives an enable level signal in the emergency lighting mode and starts the operation of the boost drive circuit based on the enable level signal.

9. The emergency lighting device of claim 8, wherein when the emergency lighting mode is switched to the normal lighting mode, the circuit of the emergency unit is first cut off to shut down the operation of the boost drive circuit, and the signal controlling the boost drive circuit is switched to the disabled level after a delay period.

10. The emergency lighting device as described in claim 8, characterized in that: It further includes: a check switch for detecting whether the emergency unit is functioning properly, wherein when the check switch is triggered, the boost drive circuit is activated and the circuit of the emergency unit is connected for a detection period. The emergency lighting device switches to the normal lighting mode after the detection period.

11. The emergency lighting device as claimed in claim 1, wherein the constant current drive module (CC) comprises: Chip module (U): The DRAIN terminal of the chip module is connected to one end of capacitor (C22), the positive terminal of diode (D), and one end of inductor (T1); the VIN terminal of the chip module is connected to one end of resistor (R40); the SOURCE terminal of the chip module is connected to one end of resistor (R32); the other SOURCE terminal of the chip module is connected to one end of resistor (R29), the other end of which is electrically grounded; the RTH / EN terminal of the chip module is connected to one end of resistor (R67), the other end of which is... One end is grounded; the other end of capacitor (C22) is connected to the negative terminal of diode (D), one end of capacitor (C23), one end of capacitor (C65), one end of resistor (R57) and output terminal (8), and the other end of inductor (T1) is electrically connected to the other end of capacitor (C23), the other end of capacitor (C65), the other end of resistor (R57) and output terminal (5), and a constant current is output through output terminal (8); one end of capacitor (C24) is connected to the other end of inductor (T1), and the other end of capacitor (C24) is electrically grounded.

12. The emergency lighting device as described in claim 2, characterized in that: The selection switch module includes a switch and a relay. The switch is used to connect the color temperature adjustment module to the first output terminal and the second output terminal or the third output terminal and the fourth output terminal of the constant current drive module. The selection switch module enables the emergency lighting device to switch between the normal lighting mode and the emergency mode.

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