Lighting device with emergency lighting function

Abstract

A lighting device with an emergency lighting function comprises a load, a main lighting power supply module and an emergency lighting power supply module. The main lighting power supply module comprises an isolation constant current unit and is connected with a load and an external power supply. The emergency lighting power supply module comprises an emergency boost unit, a battery unit, a charging control unit, an isolation step-down unit and an input unit. The emergency boost unit is connected with a load. The battery unit is connected with the emergency boost unit. The charging control unit is connected with the battery unit. The isolation voltage reduction unit is connected with the charging control unit. The input unit is connected with the isolation voltage reduction unit.

Description

Technical Field

[0001] The invention relates to a lighting device, in particular to a lighting device with emergency lighting function. Background Art

[0002] Emergency lighting devices can provide backup lighting functions. They are lighting devices that provide lighting functions when the lighting system cannot operate normally due to an accident, so as to protect the safety of people in the building and ensure that important equipment can operate normally. Backup lighting is lighting set up to ensure continued operation when normal lighting is interrupted (no mains power supply). Emergency lighting devices have been widely used in security monitoring rooms, computer rooms, large shopping malls, banks, hospital buildings, etc., and are important safety facilities in modern buildings.

[0003] However, the existing emergency lighting devices still need to be further improved in terms of safety due to the lack of effective isolated power supply design. In addition, the existing emergency lighting devices often suffer from power leakage, making them unable to perform emergency lighting functions normally. Summary of the invention

[0004] According to one embodiment of the present invention, a lighting device with an emergency lighting function is provided, which includes a load, a main lighting power supply module and an emergency lighting power supply module. The main lighting power supply module includes an isolated constant current unit, and is connected to the load and an external power supply. The emergency lighting power supply module includes an emergency boost unit, a battery unit, a charging control unit, an isolated buck unit and an input unit. The emergency boost unit is connected to the load. The battery unit is connected to the emergency boost unit. The charging control unit is connected to the battery unit. The isolated buck unit is connected to the charging control unit. The input unit is connected to the isolated buck unit.

[0005] In one embodiment, the isolation constant current unit includes a photoelectric isolation signal receiving component, a signal processing component and a constant current circuit.

[0006] In one embodiment, the isolation step-down unit includes an isolation transformer.

[0007] In one embodiment, the load includes one or more light emitting diodes.

[0008] In one embodiment, the emergency lighting power supply module further includes a processing unit, which is connected to the emergency boost unit, the battery unit and the charging control unit, and which performs signal transmission with the main lighting power supply module.

[0009] In one embodiment, the emergency lighting power supply module further includes a low-voltage power supply unit, which is connected to the processing unit and the battery unit.

[0010] In one embodiment, the emergency lighting power supply module further includes a mains identification unit. The mains identification unit is connected to the processing unit and is used to generate an identification signal. The processing unit executes a charging mode or an emergency mode according to the identification signal. The processing unit starts the charging control unit in the charging mode to charge the battery unit. The processing unit starts the emergency boost unit in the emergency mode to drive the load to perform the emergency lighting function.

[0011] In one embodiment, the emergency lighting power supply module further includes a test unit. The test unit is connected to the processing unit and is used to control the processing unit to execute a transport mode or an installation test mode. The processing unit controls the battery unit to enter a static state in the transport mode. The processing unit turns off the isolation constant current unit in the installation test mode and starts the emergency boost unit to drive the load to perform the emergency lighting function test.

[0012] In one embodiment, the test unit is used to generate one or more square waves. When the processing unit detects the plurality of square waves, the processing unit determines whether the number of the plurality of square waves reaches a preset number, and when it is determined that the plurality of square waves reaches the preset number, determines whether the plurality of square waves are continuous and have the same length. The processing unit executes the transport mode when it is determined that the plurality of square waves are continuous and have the same length.

[0013] In one embodiment, the test unit is a button.

[0014] As described above, the lighting device with emergency lighting function according to the embodiments of the present invention may have one or more of the following advantages:

[0015] (1) In one embodiment of the present invention, the lighting device includes a load, a main lighting power supply module and an emergency lighting power supply module. The main lighting power supply module includes an isolated constant current unit and is connected to the load and an external power supply. The emergency lighting power supply module includes an emergency boost unit, a battery unit, a charging control unit, an isolated step-down unit and an input unit. The emergency boost unit is connected to the load. The battery unit is connected to the emergency boost unit. The charging control unit is connected to the battery unit. The isolated step-down unit is connected to the charging control unit. The input unit is connected to the isolated step-down unit. The isolated constant current unit includes a photoelectric isolation signal receiving component, a signal processing component and a constant current circuit. The isolated step-down unit includes an isolation transformer. Through the above-mentioned isolation circuit design, the main lighting power supply module can be isolated from the emergency lighting power supply module, thereby greatly improving the safety of the lighting device.

[0016] (2) In one embodiment of the present invention, the emergency lighting power supply module of the lighting device also includes a processing unit and a testing unit. The processing unit is connected to the emergency boost unit, the battery unit and the charging control unit. The processing unit transmits signals to the main lighting power supply module. The testing unit is connected to the processing unit and can control the processing unit to execute the transportation mode. In the transportation mode, the processing unit controls the battery unit to enter a static state, so that the battery unit can enter a static low-power working mode to prevent the battery unit from being damaged. Therefore, the lighting device can perform the emergency lighting function normally.

[0017] (3) In one embodiment of the present invention, the test unit of the emergency lighting power supply module of the lighting device can also control the processing unit to execute the installation test mode. In the installation test mode, the processing unit turns off the isolation constant current unit and starts the emergency boost unit to drive the load to perform the emergency lighting function test. Therefore, the user can quickly test whether the emergency lighting function of the lighting device is normal when installing the lighting device through the above-mentioned installation test mode, without waiting for a power outage to occur, making the installation process more efficient. Therefore, the installation cost of the lighting device can be greatly reduced.

[0018] (4) In one embodiment of the present invention, the test unit of the emergency lighting power supply module of the lighting device generates one or more square waves. When the processing unit detects the above-mentioned multiple square waves, the processing unit determines whether the number of the above-mentioned multiple square waves reaches a preset number, and when it is determined that the above-mentioned multiple square waves reach the preset number, the processing unit determines whether the above-mentioned multiple square waves are continuous and have the same length. The processing unit executes the transportation mode when it is determined that the above-mentioned multiple square waves are continuous and have the same length. Through the above-mentioned judgment mechanism, the processing unit can accurately judge whether the test unit is correctly operated to execute the transportation mode or is accidentally touched due to a collision, so as to avoid the lighting device from being mistakenly activated during transportation.

[0019] (5) In one embodiment of the present invention, the emergency lighting power supply module of the lighting device also includes a mains power identification unit. The mains power identification unit is connected to the processing unit and is used to generate an identification signal. The processing unit executes a charging mode or an emergency mode according to the identification signal. In the charging mode, the processing unit starts the charging control unit to charge the battery unit. In the emergency mode, the processing unit starts the emergency boost unit to drive the load to perform the emergency lighting function. Through the above-mentioned mechanism, the lighting device can appropriately execute the charging mode to charge the battery unit, so it can be ensured that the battery unit has sufficient power when executing the emergency mode. Therefore, the lighting device can meet the needs of practical applications.

[0020] (6) In one embodiment of the present invention, the lighting device is simple in design, so it can achieve various desired functions without significantly increasing the cost. Therefore, the safety of the lighting device can also be greatly improved. Therefore, the lighting device can achieve high practicality to meet the needs of different applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 4 is a block diagram of a circuit structure of a lighting device with an emergency lighting function according to a first embodiment of the present invention.

[0022] Figure 2 FIG. 4 is a block diagram of a circuit structure of a lighting device with emergency lighting function according to a second embodiment of the present invention.

[0023] Figure 3 FIG. 4 is a block diagram of a circuit structure of a lighting device with emergency lighting function according to a third embodiment of the present invention.

[0024] Figure 4 It is a first schematic diagram of a square wave signal generated by a test unit of a lighting device with emergency lighting function according to a third embodiment of the present invention.

[0025] Figure 5 It is a second schematic diagram of a square wave signal generated by a test unit of a lighting device with emergency lighting function according to a third embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1-lighting device; 11-main lighting power supply module; 111-isolation constant current unit; 1111-photoelectric isolation signal receiving component; 1112-signal processing component; 12-emergency lighting power supply module; 121-input unit; 122-isolation step-down unit; 1221-isolation transformer; 123-charging control unit; 124-battery unit; 125-low voltage power supply unit; 126-processing unit; 127-emergency boost unit; 128-mains power identification unit; 129-test unit; 13-load; ES-external power supply; Ws, Ws1, Ws2, Ws3-square wave; P1, P2, P3-length of square wave.

[0028] The detailed features and advantages of the present invention are described in detail in the following embodiments, and the contents are sufficient to enable anyone skilled in the relevant art to understand the technical content of the present invention and implement it accordingly. Moreover, according to the contents, claims and drawings disclosed in this specification, any person skilled in the relevant art can easily understand the purposes and advantages of the present creation. DETAILED DESCRIPTION

[0029] The following will refer to the relevant drawings to illustrate the embodiment of the lighting device with emergency lighting function according to the present invention. For the sake of clarity and convenience of the illustration, the components in the drawings may be exaggerated or reduced in size and proportion. In the following description and / or claims, when it is mentioned that a component is "connected" or "coupled" to another component, it may be directly connected or coupled to the other component or there may be an intervening component; and when it is mentioned that a component is "directly connected" or "directly coupled" to another component, there is no intervening component, and other words used to describe the relationship between components or layers should be interpreted in the same way. For ease of understanding, the same components in the following embodiments are illustrated with the same symbols.

[0030] See also Figure 1 , which is a block diagram of the circuit structure of the lighting device with emergency lighting function according to the first embodiment of the present invention. As shown in the figure, the lighting device 1 includes a load 13, a main lighting power supply module 11 and an emergency lighting power supply module 12.

[0031] The load 13 may include one or more light emitting diodes. In another embodiment, the load 13 may also be a bulb, a light tube or other light sources.

[0032] The main lighting power supply module 11 includes an isolation constant current unit 111. The main lighting power supply module 11 is connected to the load 13 and the external power supply ES. The isolation constant current unit 111 includes a photoelectric isolation signal receiving component 1111, a signal processing component 1112 (such as an optical coupler or other similar components) and a constant current circuit, and its circuit structure should be well known to those skilled in the art, so it will not be described in detail here. In one embodiment, the external power supply ES can be a wall switch or other similar switch, which is connected to the power supply network (mains power).

[0033] The emergency lighting power supply module 12 includes an input unit 121 , an emergency boost unit 127 , a battery unit 124 , a charging control unit 123 , an isolation and voltage reduction unit 122 , a processing unit 126 and a low-voltage power supply unit 125 .

[0034] The emergency boost unit 127 is connected to the load 13. The emergency boost unit 127 may include a boost conversion circuit, and its circuit structure should be well known to those skilled in the art, so it will not be described in detail here.

[0035] The battery unit 124 is connected to the emergency boost unit 127. The battery unit 124 may be a rechargeable battery, such as a lithium battery, a nickel-hydrogen battery, a nickel-cadmium battery, and the like.

[0036] The charging control unit 123 is connected to the battery unit 124. The charging control unit 123 may include a controller and a power monitoring circuit. The power monitoring circuit can detect the power of the battery unit 124. Its circuit structure should be well known to those skilled in the art, so it will not be described in detail here. The controller may be a microcontroller (MCU), a central processing unit (MCU), an application-specific integrated circuit chip (ASIC), a field programmable gate array (FPGA) or other similar components.

[0037] The isolation step-down unit 122 is connected to the charging control unit 123. The isolation step-down unit 122 includes an isolation transformer 1221, and its circuit structure should be well known to those skilled in the art, so it will not be described in detail here.

[0038] The input unit 121 is connected to the isolation step-down unit 122. The input unit 121 may include a live line input terminal and a neutral line input terminal, and is connected to a power supply network (mains).

[0039] The low voltage power supply unit 125 is connected to the processing unit 126, the isolation and voltage reduction unit 122 and the battery unit 124. The low voltage power supply unit 125 includes a conversion circuit, and its circuit structure should be well known to those skilled in the art, so it will not be described in detail here.

[0040] As mentioned above, the isolation step-down unit 122 includes an isolation transformer 1221. The charging control unit 123 and the low-voltage power supply unit 125 perform signal transmission with the isolation step-down unit 122.

[0041] The processing unit 126 is connected to the emergency boost unit 127, the battery unit 124, the low voltage power supply unit 125 and the charging control unit 123. As mentioned above, the isolation constant current unit 111 includes a photoelectric isolation signal receiving component 1111 and a signal processing component 1112, and the processing unit 126 transmits signals to the isolation constant current unit 111 (main lighting power supply module 11). The processing unit 126 can be a microcontroller (MCU), a central processing unit (MCU), an application-specific integrated circuit chip (ASIC), a field programmable gate array (FPGA) or other similar components.

[0042] Through the above isolation circuit design, the main lighting power supply module 11 can be isolated from the emergency lighting power supply module 12 to achieve a good isolation effect ( Figure 1 The dotted line in the figure represents the isolation effect). Therefore, the safety of the lighting device 1 is greatly improved to meet the needs of practical applications.

[0043] When the power supply network operates normally, the lighting device 1 is in a normal working mode. At this time, the power supply network can drive the main lighting power supply module 11 (isolated constant current unit 111) to supply power to the load 13. At the same time, the power supply network supplies power to the charging control unit 123, the battery unit 124, the low voltage power supply unit 125, the processing unit 126 and the emergency boost unit 127 through the input unit 121 and the isolated step-down unit 122. The processing unit 126 executes the charging mode to start the charging control unit 123 to charge the battery unit 124, and controls the charging control unit 123 to perform various power management functions.

[0044] When the power supply network is abnormal (power outage), the battery unit 124 drives the low voltage power supply unit 125 to supply power to the processing unit 126. The battery unit 124 drives the emergency boost unit 127 to supply power to the load 13. The processing unit 126 appropriately controls the emergency boost unit 127 so that the load 13 can operate normally.

[0045] Of course, this embodiment is only used for illustration rather than to limit the scope of the present invention, and equivalent modifications or changes made to the lighting device 1 with emergency lighting function according to this embodiment should still be included in the patent scope of the present invention.

[0046] See also Figure 2 , which is a block diagram of the circuit structure of a lighting device with emergency lighting function according to the second embodiment of the present invention. As shown in the figure, the lighting device 1 includes a load 13, a main lighting power supply module 11 and an emergency lighting power supply module 12.

[0047] The load 13 may include one or more light emitting diodes. The main lighting power supply module 11 includes an isolated constant current unit 111. The emergency lighting power supply module 12 includes an input unit 121, an emergency boost unit 127, a battery unit 124, a charging control unit 123, an isolated buck unit 122, a processing unit 126 and a low voltage power supply unit 125.

[0048] The above components are similar to those in the previous embodiment, so they are not described in detail here. Different from the previous embodiment, the emergency lighting power supply module 12 of this embodiment further includes a mains power identification unit 128 .

[0049] The mains identification unit 128 is connected to the processing unit 126 and is used to generate an identification signal. The mains identification unit 128 may include a voltage detection circuit or a current detection circuit, and its circuit structure should be well known to those skilled in the art, so it will not be described in detail here.

[0050] When the power supply network is abnormal (power outage), the mains identification unit 128 generates an identification signal indicating an abnormal state. At this time, the processing unit 126 executes the emergency mode according to the identification signal. The processing unit 126 starts the emergency boost unit 127 in the emergency mode to drive the load 13 to perform the emergency lighting function.

[0051] When the power supply network operates normally, the mains identification unit 128 generates an identification signal indicating a normal state. At this time, the processing unit 126 executes a charging mode according to the identification signal. The processing unit 126 activates the charging control unit 123 in the charging mode to charge the battery unit 124.

[0052] Of course, this embodiment is only used for illustration rather than to limit the scope of the present invention, and equivalent modifications or changes made to the lighting device 1 with emergency lighting function according to this embodiment should still be included in the patent scope of the present invention.

[0053] See also Figure 3 , which is a block diagram of the circuit structure of a lighting device with emergency lighting function according to the third embodiment of the present invention. As shown in the figure, the lighting device 1 includes a load 13, a main lighting power supply module 11 and an emergency lighting power supply module 12.

[0054] The load 13 may include one or more light emitting diodes. The main lighting power supply module 11 includes an isolated constant current unit 111. The emergency lighting power supply module 12 includes an input unit 121, an emergency boost unit 127, a battery unit 124, a charging control unit 123, an isolated buck unit 122, a processing unit 126, a low voltage power supply unit 125 and a mains power identification unit 128.

[0055] The above components are similar to those in the previous embodiment, so they are not described in detail here. Different from the previous embodiment, the emergency lighting power supply module 12 of this embodiment further includes a testing unit 129 .

[0056] The test unit 129 is connected to the processing unit 126 and is used to control the processing unit 126 to execute the transport mode or the installation test mode. The test unit 129 is a button, a knob or other similar components. The processing unit 126 controls the battery unit 124 to enter a static state in the transport mode. Among them, the test unit 129 can generate one or more square waves Ws. When the processing unit 126 detects the above-mentioned multiple square waves Ws, the processing unit 126 determines whether the number of the above-mentioned multiple square waves Ws reaches a preset number, and when it is determined that the above-mentioned multiple square waves Ws reach the preset number, it determines whether the above-mentioned multiple square waves Ws are continuous and have the same length. The processing unit 126 executes the transport mode when it is determined that the above-mentioned multiple square waves Ws are continuous and have the same length.

[0057] The processing unit 126 turns off the isolation constant current unit 111 in the installation test mode, and starts the emergency boost unit 127 to drive the load 13 to perform the emergency lighting function test, and stops performing the emergency lighting function after the test is completed (such as after a preset time).

[0058] Thus, the processing unit 126 controls the battery unit 124 to enter a static state in the transport mode, so that the battery unit 124 can enter a static low-power working mode to prevent the battery unit 124 from being damaged. Therefore, the lighting device 1 can normally perform the emergency lighting function.

[0059] In addition, the processing unit 126 turns off the isolation constant current unit 111 in the installation test mode, and starts the emergency boost unit 127 to drive the load 13 to perform the emergency lighting function test. Therefore, the user can quickly test whether the emergency lighting function of the lighting device 1 is normal when installing the lighting device 1 through the above-mentioned installation test mode, without waiting for a power outage to occur, making the installation process more efficient. Therefore, the installation cost of the lighting device 1 can be greatly reduced.

[0060] Of course, this embodiment is only used for illustration rather than to limit the scope of the present invention, and equivalent modifications or changes made to the lighting device 1 with emergency lighting function according to this embodiment should still be included in the patent scope of the present invention.

[0061] It is worth mentioning that the existing emergency lighting device 1 still needs to be further improved in terms of safety due to the lack of an effective isolated power supply design. In addition, the existing emergency lighting device 1 often suffers from power loss due to leakage, making it unable to perform the emergency lighting function normally. In contrast, according to an embodiment of the present invention, the lighting device 1 includes a load 13, a main lighting power supply module 11 and an emergency lighting power supply module 12. The main lighting power supply module 11 includes an isolated constant current unit 111, and is connected to the load 13 and the external power supply ES. The emergency lighting power supply module 12 includes an emergency boost unit 127, a battery unit 124, a charging control unit 123, an isolated buck unit 122 and an input unit 121. The emergency boost unit 127 is connected to the load 13. The battery unit 124 is connected to the emergency boost unit 127. The charging control unit 123 is connected to the battery unit 124. The isolated buck unit 122 is connected to the charging control unit 123. The input unit 121 is connected to the isolated buck unit 122. The isolation constant current unit 111 includes a photoelectric isolation signal receiving component 1111, a signal processing component 1112 and a constant current circuit. The isolation step-down unit 122 includes an isolation transformer 1221. Through the above isolation circuit design, the main lighting power supply module 11 can be isolated from the emergency lighting power supply module 12, so that the safety of the lighting device 1 is greatly improved.

[0062] According to an embodiment of the present invention, the emergency lighting power supply module 12 of the lighting device 1 further includes a processing unit 126 and a testing unit 129. The processing unit 126 is connected to the emergency boost unit 127, the battery unit 124 and the charging control unit 123. The processing unit 126 performs signal transmission with the main lighting power supply module 11. The testing unit 129 is connected to the processing unit 126 and can control the processing unit 126 to execute the transportation mode. In the transportation mode, the processing unit 126 controls the battery unit 124 to enter a static state, so that the battery unit 124 can enter a static low-power working mode to prevent the battery unit 124 from being damaged. Therefore, the lighting device 1 can perform the emergency lighting function normally.

[0063] Furthermore, according to an embodiment of the present invention, the test unit 129 of the emergency lighting power supply module 12 of the lighting device 1 can also control the processing unit 126 to execute the installation test mode. The processing unit 126 turns off the isolation constant current unit 111 in the installation test mode, and starts the emergency boost unit 127 to drive the load 13 to perform the emergency lighting function test. Therefore, the user can quickly test whether the emergency lighting function of the lighting device 1 is normal when installing the lighting device 1 through the above-mentioned installation test mode, without waiting for a power outage to occur, making the installation process more efficient. Therefore, the installation cost of the lighting device 1 can be greatly reduced.

[0064] In addition, according to an embodiment of the present invention, the test unit 129 of the emergency lighting power supply module 12 of the lighting device 1 generates one or more square waves Ws. When the processing unit 126 detects the above-mentioned multiple square waves Ws, the processing unit 126 determines whether the number of the above-mentioned multiple square waves Ws reaches a preset number, and when it is determined that the above-mentioned multiple square waves Ws reach the preset number, it determines whether the above-mentioned multiple square waves Ws are continuous and have the same length. The processing unit 126 executes the transportation mode when it is determined that the above-mentioned multiple square waves Ws are continuous and have the same length. Through the above-mentioned judgment mechanism, the processing unit 126 can accurately judge whether the test unit 129 is correctly operated to execute the transportation mode or is accidentally touched due to a collision, so as to avoid the lighting device 1 from being mistakenly activated during transportation.

[0065] In addition, according to an embodiment of the present invention, the emergency lighting power supply module 12 of the lighting device 1 also includes a mains power identification unit 128. The mains power identification unit 128 is connected to the processing unit 126 and is used to generate an identification signal. The processing unit 126 executes a charging mode or an emergency mode according to the identification signal. The processing unit 126 starts the charging control unit 123 in the charging mode to charge the battery unit 124. The processing unit 126 starts the emergency boost unit 127 in the emergency mode to drive the load 13 to perform the emergency lighting function. Through the above-mentioned mechanism, the lighting device 1 can appropriately execute the charging mode to charge the battery unit 124, so it can be ensured that the battery unit 124 has sufficient power when executing the emergency mode. Therefore, the lighting device 1 can meet the needs of practical applications.

[0066] Furthermore, according to the embodiment of the present invention, the design of the lighting device 1 is simple, so various desired functions can be achieved without significantly increasing the cost. Therefore, the safety of the lighting device 1 can also be greatly improved. Therefore, the lighting device 1 can achieve high practicality to meet the needs of different applications. From the above, it can be seen that the lighting device 1 with emergency lighting function according to the embodiment of the present invention can indeed achieve excellent technical effects.

[0067] See also Figure 4 , which is a first schematic diagram of a square wave Ws signal generated by the test unit 129 of the lighting device 1 with emergency lighting function according to the third embodiment of the present invention. As shown in the figure, the test unit 129 can control the processing unit 126 to execute the transportation mode. In this embodiment, the test unit 129 is a button, and the default number is 3 (which can be adjusted according to actual needs). The user presses the test unit 129 once to generate a square wave Ws (a low-level signal is generated when the test unit 129 is pressed, and a high-level signal is generated when the test unit 129 is released). When the processing unit 126 detects the above-mentioned multiple square waves Ws1, Ws2, and Ws3, the processing unit 126 determines whether the number of the above-mentioned multiple square waves Ws1, Ws2, and Ws3 reaches 3. At the same time, when the processing unit 126 determines that the above-mentioned multiple square waves Ws1, Ws2, and Ws3 reach 3, it determines whether the above-mentioned multiple square waves Ws1, Ws2, and Ws3 are continuous and have the same length. The length of the square wave Ws1 is P1. The length of the square wave Ws1 is P2. The length of the square wave Ws1 is P3. The processing unit 126 executes the transportation mode when it is determined that the plurality of square waves Ws1, Ws2, and Ws3 are continuous and have the same length (P1=P2=P3).

[0068] Of course, this embodiment is only used for illustration rather than to limit the scope of the present invention, and equivalent modifications or changes made to the lighting device 1 with emergency lighting function according to this embodiment should still be included in the patent scope of the present invention.

[0069] See also Figure 5 , which is a second schematic diagram of a square wave Ws signal generated by the test unit 129 of the lighting device with emergency lighting function according to the third embodiment of the present invention. As shown in the figure, the test unit 129 can control the processing unit 126 to execute the installation test mode. The user can generate a square wave Ws by long pressing the test unit 129 once. When the processing unit 126 detects that the square wave Ws is generated by long pressing the test unit 129, the test unit 129 controls the processing unit 126 to execute the installation test mode.

[0070] Of course, this embodiment is only used for illustration rather than to limit the scope of the present invention, and equivalent modifications or changes made to the lighting device 1 with emergency lighting function according to this embodiment should still be included in the patent scope of the present invention.

[0071] In summary, according to an embodiment of the present invention, the lighting device 1 includes a load 13, a main lighting power supply module 11 and an emergency lighting power supply module 12. The main lighting power supply module 11 includes an isolated constant current unit 111, and is connected to the load 13 and the external power supply ES. The emergency lighting power supply module 12 includes an emergency boost unit 127, a battery unit 124, a charging control unit 123, an isolated buck unit 122 and an input unit 121. The emergency boost unit 127 is connected to the load 13. The battery unit 124 is connected to the emergency boost unit 127. The charging control unit 123 is connected to the battery unit 124. The isolated buck unit 122 is connected to the charging control unit 123. The input unit 121 is connected to the isolated buck unit 122. The isolated constant current unit 111 includes a photoelectric isolation signal receiving component 1111, a signal processing component 1112 and a constant current circuit. The isolated buck unit 122 includes an isolation transformer and a buck converter. Through the above isolation circuit design, the main lighting power supply module 11 can be isolated from the emergency lighting power supply module 12 , so that the safety of the lighting device 1 is greatly improved.

[0072] According to an embodiment of the present invention, the emergency lighting power supply module 12 of the lighting device 1 further includes a processing unit 126 and a testing unit 129. The processing unit 126 is connected to the emergency boost unit 127, the battery unit 124 and the charging control unit 123. The processing unit 126 performs signal transmission with the main lighting power supply module 11. The testing unit 129 is connected to the processing unit 126 and can control the processing unit 126 to execute the transportation mode. In the transportation mode, the processing unit 126 controls the battery unit 124 to enter a static state, so that the battery unit 124 can enter a static low-power working mode to prevent the battery unit 124 from being damaged. Therefore, the lighting device 1 can perform the emergency lighting function normally.

[0073] Furthermore, according to an embodiment of the present invention, the test unit 129 of the emergency lighting power supply module 12 of the lighting device 1 can also control the processing unit 126 to execute the installation test mode. The processing unit 126 turns off the isolation constant current unit 111 in the installation test mode, and starts the emergency boost unit 127 to drive the load 13 to perform the emergency lighting function test. Therefore, the user can quickly test whether the emergency lighting function of the lighting device 1 is normal when installing the lighting device 1 through the above-mentioned installation test mode, without waiting for a power outage to occur, making the installation process more efficient. Therefore, the installation cost of the lighting device 1 can be greatly reduced.

[0074] In addition, according to an embodiment of the present invention, the test unit 129 of the emergency lighting power supply module 12 of the lighting device 1 generates one or more square waves Ws. When the processing unit 126 detects the above-mentioned multiple square waves Ws, the processing unit 126 determines whether the number of the above-mentioned multiple square waves Ws reaches a preset number, and when it is determined that the above-mentioned multiple square waves Ws reach the preset number, it determines whether the above-mentioned multiple square waves Ws are continuous and have the same length. The processing unit 126 executes the transportation mode when it is determined that the above-mentioned multiple square waves Ws are continuous and have the same length. Through the above-mentioned judgment mechanism, the processing unit 126 can accurately judge whether the test unit 129 is correctly operated to execute the transportation mode or is accidentally touched due to a collision, so as to avoid the lighting device 1 from being mistakenly activated during transportation.

[0075] In addition, according to an embodiment of the present invention, the emergency lighting power supply module 12 of the lighting device 1 also includes a mains power identification unit 128. The mains power identification unit 128 is connected to the processing unit 126 and is used to generate an identification signal. The processing unit 126 executes a charging mode or an emergency mode according to the identification signal. The processing unit 126 starts the charging control unit 123 in the charging mode to charge the battery unit 124. The processing unit 126 starts the emergency boost unit 127 in the emergency mode to drive the load 13 to perform the emergency lighting function. Through the above-mentioned mechanism, the lighting device 1 can appropriately execute the charging mode to charge the battery unit 124, so it can be ensured that the battery unit 124 has sufficient power when executing the emergency mode. Therefore, the lighting device 1 can meet the needs of practical applications.

[0076] Furthermore, according to the embodiment of the present invention, the design of the lighting device 1 is simple, so various desired functions can be achieved without significantly increasing the cost. Therefore, the safety of the lighting device 1 can also be greatly improved. Therefore, the lighting device 1 can achieve high practicality to meet the needs of different applications.

[0077] It should be noted that, although the above embodiments have been described in this article, the scope of patent protection of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the patent of the present invention.

Claims

1. A lighting device with emergency lighting function, characterized in that: include: load; A main lighting power supply module, which includes an isolation constant current unit and is connected to the load and an external power supply; as well as An emergency lighting power supply module comprises an emergency boost unit, a battery unit, a charging control unit, an isolation step-down unit and an input unit, wherein the emergency boost unit is connected to the load, the battery unit is connected to the emergency boost unit, the charging control unit is connected to the battery unit, the isolation step-down unit is connected to the charging control unit, and the input unit is connected to the isolation step-down unit.

2. The lighting device with emergency lighting function according to claim 1, characterized in that: The isolation constant current unit also includes a photoelectric isolation signal receiving component, a signal processing component and a constant current circuit.

3. The lighting device with emergency lighting function according to claim 1, characterized in that: The isolation step-down unit also includes an isolation transformer.

4. The lighting device with emergency lighting function according to claim 1, characterized in that: The load includes one or more light emitting diodes.

5. The lighting device with emergency lighting function according to claim 1, characterized in that: The emergency lighting power supply module also includes a processing unit, which is connected to the emergency boost unit, the battery unit and the charging control unit, and the processing unit transmits signals with the main lighting power supply module.

6. The lighting device with emergency lighting function according to claim 5, characterized in that: The emergency lighting power supply module also includes a low-voltage power supply unit, which is connected to the processing unit and the battery unit.

7. The lighting device with emergency lighting function according to claim 5, characterized in that: The emergency lighting power supply module also includes a mains power identification unit, which is connected to the processing unit and is used to generate an identification signal. The processing unit executes a charging mode or an emergency mode according to the identification signal. The processing unit starts the charging control unit in the charging mode to charge the battery unit. The processing unit starts the emergency boost unit in the emergency mode to drive the load to perform the emergency lighting function.

8. The lighting device with emergency lighting function according to claim 5, characterized in that: The emergency lighting power supply module also includes a testing unit, which is connected to the processing unit and is used to control the processing unit to execute a transportation mode or an installation test mode. The processing unit controls the battery unit to enter a static state in the transportation mode. The processing unit turns off the isolation constant current unit in the installation test mode and starts the emergency boost unit to drive the load to perform an emergency lighting function test.

9. The lighting device with emergency lighting function according to claim 8, characterized in that: The testing unit is used to generate one or more square waves. When the processing unit detects the multiple square waves, the processing unit determines whether the number of the multiple square waves reaches a preset number, and when it is determined that the multiple square waves reach the preset number, the processing unit determines whether the multiple square waves are continuous and have the same length. The processing unit executes the transportation mode when it is determined that the multiple square waves are continuous and have the same length.

10. The lighting device with emergency lighting function according to claim 8, characterized in that: The testing unit is a button.

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