Lighting device with emergency lighting function

Abstract

The application discloses a lighting device with emergency lighting function, which 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 the load and an external power source. The emergency lighting power supply module comprises an emergency voltage boosting unit, a battery unit, a charging control unit, an isolation voltage reducing unit and an input unit. The emergency voltage boosting unit is connected with the load. The battery unit is connected with the emergency voltage boosting unit. The charging control unit is connected with the battery unit. The isolation voltage reducing unit is connected with the charging control unit. The input unit is connected with the isolation voltage reducing unit.

Description

Technical Field

[0001] This invention relates to a lighting device, and more particularly to a lighting device with an emergency lighting function. Background Technology

[0002] Emergency lighting systems provide backup lighting functionality. They are lighting devices designed to provide illumination when the main lighting system malfunctions due to an accident, protecting the safety of people in the building and ensuring the normal operation of critical equipment. Backup lighting is lighting installed to ensure continued operation when normal lighting is interrupted (no mains power supply). Emergency lighting systems are widely used in security monitoring rooms, computer rooms, large shopping malls, banks, hospitals, and other buildings, and are an important safety facility in modern buildings.

[0003] However, existing emergency lighting devices lack effective power isolation design, thus their safety needs further improvement. Furthermore, existing emergency lighting devices frequently suffer damage due to leakage, rendering them unable to function properly. Summary of the Invention

[0004] According to one embodiment of the present invention, a lighting device with emergency lighting function is provided, comprising 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 source. 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 isolated constant current unit includes an opto-isolated 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. The processing unit is connected to the emergency boost unit, the battery unit, and the charging control unit. The processing unit transmits signals 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. The low-voltage power supply unit is connected to the processing unit and the battery unit.

[0010] In one embodiment, the emergency lighting power supply module further 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 either a charging mode or an emergency mode based on the identification signal. In charging mode, the processing unit activates the charging control unit to charge the battery unit. In emergency mode, the processing unit activates the emergency boost unit to drive the load to perform the emergency lighting function.

[0011] In one embodiment, the emergency lighting power supply module further includes a testing unit. The testing 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. In transport mode, the processing unit controls the battery unit to enter a static state. In installation test mode, the processing unit shuts down the isolated constant current unit and starts the emergency boost unit to drive the load to perform an emergency lighting function test.

[0012] In one embodiment, the testing unit generates one or more square waves. When the processing unit detects the plurality of square waves, it determines whether the number of the plurality of square waves reaches a preset number, and if it determines that the plurality of square waves has reached the preset number, it determines whether the plurality of square waves are continuous and whether they have the same length. If the processing unit determines that the plurality of square waves are continuous and have the same length, it executes a transport mode.

[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 source. 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. The isolated constant current unit includes an opto-isolated signal receiving component, a signal processing component, and a constant current circuit. The isolated buck unit includes an isolation transformer. Through the above-described isolation circuit design, the main lighting power supply module and the emergency lighting power supply module can be isolated from each other, 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 further 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 transport mode. In the transport mode, the processing unit controls the battery unit to enter a static state, allowing the battery unit to enter a static low-power operating mode to prevent battery damage. Therefore, the lighting device can normally perform the emergency lighting function.

[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 shuts down the isolation constant current unit and starts the emergency boost unit to drive the load to perform the emergency lighting function test. Therefore, users can quickly test whether the emergency lighting function of the lighting device is normal during the installation of the lighting device through the above-mentioned installation test mode, without waiting for a power outage, making the installation process more efficient. Therefore, the installation cost of the lighting device can be significantly 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 plurality of square waves, the processing unit determines whether the number of the plurality of square waves reaches a preset number, and when the preset number is reached, determines whether the plurality of square waves are continuous and have the same length. When the processing unit determines that the plurality of square waves are continuous and have the same length, it executes the transport mode. Through the above-described determination mechanism, the processing unit can accurately determine whether the test unit is correctly operated to execute the transport mode or whether it is accidentally activated due to a collision, so as to avoid the lighting device being accidentally activated during transport.

[0019] (5) In one embodiment of the present invention, the emergency lighting power supply module of the lighting device further 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 activates the charging control unit to charge the battery unit. In the emergency mode, the processing unit activates the emergency boost unit to drive the load to perform the emergency lighting function. Through the above mechanism, the lighting device can appropriately execute the charging mode to charge the battery unit, thus ensuring that the battery unit has sufficient power when the emergency mode is executed. Therefore, the lighting device can meet the needs of practical applications.

[0020] (6) In one embodiment of the present invention, the lighting device is designed simply, thus achieving various desired effects without significantly increasing costs. Therefore, the safety of the lighting device can also be greatly improved. Thus, the lighting device can achieve high practicality to meet the needs of different applications. Attached Figure Description

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

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

[0023] Figure 3 This 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.

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

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

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Lighting device; 11-Main lighting power supply module; 111-Isolation constant current unit; 1111-Optical 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 step-up unit; 128-Main power identification unit; 129-Testing unit; 13-Load; ES-External power supply; Ws, Ws1, Ws2, Ws3-Square wave; P1, P2, P3-Length of square wave.

[0028] The following detailed description of the features and advantages of the present invention is sufficient to enable anyone skilled in the art to understand the technical content of the present invention and implement it accordingly. Based on the content disclosed in this specification, the claims and drawings, anyone skilled in the art can easily understand the purpose and advantages of this creation. Detailed Implementation

[0029] The following description, with reference to the accompanying drawings, illustrates embodiments of a lighting device with emergency lighting function according to the present invention. For clarity and ease of illustration, the dimensions and proportions of the components in the drawings may be exaggerated or reduced. In the following description and / or claims, when a component is referred to as "connected" or "coupled" to another component, it may be directly connected or coupled to that other component or there may be an intervening component; when a component is referred to as "directly connected" or "directly coupled" to another component, there is no intervening component. Other terms used to describe the relationship between components or layers should be interpreted in the same manner. For ease of understanding, the same components in the following embodiments are indicated by the same symbols.

[0030] Please see Figure 1 The figure shows a block diagram of the circuit structure of a 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 light bulb, a lamp tube, or other light source.

[0032] The main lighting power supply module 11 includes an isolated constant current unit 111. The main lighting power supply module 11 is connected to the load 13 and the external power supply ES. The isolated constant current unit 111 includes an opto-isolated signal receiving component 1111, a signal processing component 1112 (such as an optocoupler or other similar component), and a constant current circuit. Its circuit structure is well known to those skilled in the art and will not be described in detail here. In one embodiment, the external power supply ES may be a wall switch or other similar switch 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 step-down unit 122, a processing unit 126, and a low-voltage power supply unit 125.

[0034] Emergency boost unit 127 is connected to load 13. Emergency boost unit 127 may include a boost conversion circuit, the circuit structure of which should be well known to those skilled in the art, and therefore will not be described in detail here.

[0035] Battery unit 124 is connected to emergency boost unit 127. Battery unit 124 can be a rechargeable battery, such as a lithium battery, nickel-metal hydride battery, nickel-cadmium battery, etc.

[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 level of the battery unit 124, and 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 (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, the circuit structure of which should be well known to those skilled in the art, and therefore will not be described in detail here.

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

[0039] The low-voltage power supply unit 125 is connected to the processing unit 126, the isolation step-down unit 122, and the battery unit 124. The low-voltage power supply unit 125 includes a conversion circuit, the structure of which should be well known to those skilled in the art, and therefore 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 transmit signals with the isolation step-down unit 122.

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

[0042] Through the above-described 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 dashed lines in the diagram represent the isolation effect). Therefore, the safety of lighting device 1 is greatly improved to meet the needs of practical applications.

[0043] When the power supply network is operating normally, the lighting device 1 is in 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. Simultaneously, the power supply network supplies power to the charging control unit 123, battery unit 124, low-voltage power supply unit 125, processing unit 126, and 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 malfunctions (power outage), battery unit 124 drives low-voltage power supply unit 125 to supply power to processing unit 126. Battery unit 124 also drives emergency boost unit 127 to supply power to load 13. Processing unit 126 then appropriately controls emergency boost unit 127 to ensure that load 13 can operate normally.

[0045] Of course, this embodiment is only for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with emergency lighting function according to this embodiment should still be included within the patent scope of the invention.

[0046] Please see Figure 2 The figure shows a block diagram of the circuit structure of a lighting device with emergency lighting function according to a second embodiment of the present invention. As shown, 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 components described above are similar to those in the previous embodiments, and therefore will not be described in detail here. Unlike the previous embodiments, the emergency lighting power supply module 12 in this embodiment also includes a mains power identification unit 128.

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

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

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

[0052] Of course, this embodiment is only for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with emergency lighting function according to this embodiment should still be included within the patent scope of the invention.

[0053] Please see Figure 3 The figure shows 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 components described above are similar to those in the previous embodiments, and therefore will not be described in detail here. Unlike the previous embodiments, the emergency lighting power supply module 12 in this embodiment also 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 a transportation mode or an installation test mode. The test unit 129 is a button, knob, or other similar component. In the transportation mode, the processing unit 126 controls the battery unit 124 to enter a static state. The test unit 129 can generate one or more square waves Ws. When the processing unit 126 detects the multiple square waves Ws, it determines whether the number of the multiple square waves Ws reaches a preset number, and if it determines that the multiple square waves Ws have reached the preset number, it determines whether the multiple square waves Ws are continuous and have the same length. The processing unit 126 executes the transportation mode when it determines that the multiple square waves Ws are continuous and have the same length.

[0057] In the installation test mode, the processing unit 126 shuts down the isolation constant current unit 111 and starts the emergency boost unit 127 to drive the load 13 to perform the emergency lighting function test, and stops the execution of the emergency lighting function after the test is completed (such as after a preset time).

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

[0059] In addition, in the installation test mode, the processing unit 126 shuts down the isolation constant current unit 111 and starts the emergency boost unit 127 to drive the load 13 to perform an emergency lighting function test. Therefore, users can quickly test the emergency lighting function of the lighting device 1 during installation using the aforementioned installation test mode, without waiting for a power outage, making the installation process more efficient. Consequently, the installation cost of the lighting device 1 can be significantly reduced.

[0060] Of course, this embodiment is only for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with emergency lighting function according to this embodiment should still be included within the patent scope of the invention.

[0061] It is worth mentioning that the existing emergency lighting device 1 lacks an effective isolated power supply design, thus its safety still needs further improvement. Furthermore, the existing emergency lighting device 1 often suffers losses due to leakage, rendering it unable to perform its emergency lighting function properly. 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, which is connected to the load 13 and an 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 an opto-isolated signal receiving component 1111, a signal processing component 1112, and a constant current circuit. The isolated step-down unit 122 includes an isolation transformer 1221. Through the above-described isolation circuit design, the main lighting power supply module 11 can be isolated from the emergency lighting power supply module 12, which greatly improves the safety of the lighting device 1.

[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 transmits signals to 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 a transport mode. In the transport mode, the processing unit 126 controls the battery unit 124 to enter a static state, allowing the battery unit 124 to enter a static low-power operating mode to prevent battery loss. Therefore, the lighting device 1 can normally perform its emergency lighting function.

[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. In the installation test mode, the processing unit 126 shuts down the isolation constant current unit 111 and starts the emergency boost unit 127 to drive the load 13 to perform an emergency lighting function test. Therefore, users can quickly test whether the emergency lighting function of the lighting device 1 is normal during installation using the above-described installation test mode, without waiting for a power outage, making the installation process more efficient. Therefore, the installation cost of the lighting device 1 can be significantly reduced.

[0064] 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 generates one or more square waves Ws. When the processing unit 126 detects the plurality of square waves Ws, the processing unit 126 determines whether the number of the plurality of square waves Ws reaches a preset number, and when it determines that the plurality of square waves Ws has reached the preset number, it determines whether the plurality of square waves Ws are continuous and whether they have the same length. When the processing unit 126 determines that the plurality of square waves Ws are continuous and have the same length, it executes the transport mode. Through the above-described determination mechanism, the processing unit 126 can accurately determine whether the test unit 129 is correctly operated to execute the transport mode or whether it is accidentally activated due to a collision, so as to avoid the lighting device 1 being accidentally activated during transport.

[0065] Furthermore, 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 either a charging mode or an emergency mode based on the identification signal. In the charging mode, the processing unit 126 activates the charging control unit 123 to charge the battery unit 124. In the emergency mode, the processing unit 126 activates the emergency boost unit 127 to drive the load 13 to perform the emergency lighting function. Through the above mechanism, the lighting device 1 can appropriately execute the charging mode to charge the battery unit 124, thus ensuring that the battery unit 124 has sufficient power when the emergency mode is executed. Therefore, the lighting device 1 can meet the needs of practical applications.

[0066] Furthermore, according to embodiments of the present invention, the lighting device 1 has a simple design, thus achieving various desired effects without significantly increasing costs. Therefore, the safety of the lighting device 1 can also be greatly improved. Thus, the lighting device 1 achieves high practicality to meet the needs of different applications. As can be seen from the above, the lighting device 1 with emergency lighting function according to embodiments of the present invention can indeed achieve excellent technical results.

[0067] Please see Figure 4 This is a first schematic diagram of the 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, with a default quantity of 3 (which can be adjusted according to actual needs). A user pressing the test unit 129 once generates one 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. Simultaneously, when the number of the above-mentioned multiple square waves Ws1, Ws2, and Ws3 reaches 3, the processing unit 126 determines whether the above-mentioned multiple square waves Ws1, Ws2, and Ws3 are continuous and whether they have the same length. The length of square wave Ws1 is P1. The length of square wave Ws1 is P2. The length of square wave Ws1 is P3. Processing unit 126 executes the transport mode when it determines that the above multiple square waves Ws1, Ws2, and Ws3 are consecutive and have the same length (P1 = P2 = P3).

[0068] Of course, this embodiment is only for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with emergency lighting function according to this embodiment should still be included within the patent scope of the invention.

[0069] Please see Figure 5 This is a second schematic diagram of the 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. A user can generate a square wave Ws by pressing and holding the test unit 129 once. When the processing unit 126 detects that the square wave Ws is generated by pressing and holding 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 for illustrative purposes and is not intended to limit the scope of the invention. Equivalent modifications or alterations made to the lighting device 1 with emergency lighting function according to this embodiment should still be included within the patent scope of the invention.

[0071] In summary, according to embodiments 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, which is connected to the load 13 and an 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 an opto-isolated 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-described isolation circuit design, the main lighting power supply module 11 can be isolated from the emergency lighting power supply module 12, which greatly improves the safety of the lighting device 1.

[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 transmits signals to 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 a transport mode. In the transport mode, the processing unit 126 controls the battery unit 124 to enter a static state, allowing the battery unit 124 to enter a static low-power operating mode to prevent battery loss. Therefore, the lighting device 1 can normally perform its emergency lighting function.

[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. In the installation test mode, the processing unit 126 shuts down the isolation constant current unit 111 and starts the emergency boost unit 127 to drive the load 13 to perform an emergency lighting function test. Therefore, users can quickly test whether the emergency lighting function of the lighting device 1 is normal during installation using the above-described installation test mode, without waiting for a power outage, making the installation process more efficient. Therefore, the installation cost of the lighting device 1 can be significantly reduced.

[0074] 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 generates one or more square waves Ws. When the processing unit 126 detects the plurality of square waves Ws, the processing unit 126 determines whether the number of the plurality of square waves Ws reaches a preset number, and when it determines that the plurality of square waves Ws has reached the preset number, it determines whether the plurality of square waves Ws are continuous and whether they have the same length. When the processing unit 126 determines that the plurality of square waves Ws are continuous and have the same length, it executes the transport mode. Through the above-described determination mechanism, the processing unit 126 can accurately determine whether the test unit 129 is correctly operated to execute the transport mode or whether it is accidentally activated due to a collision, so as to avoid the lighting device 1 being accidentally activated during transport.

[0075] Furthermore, 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 either a charging mode or an emergency mode based on the identification signal. In the charging mode, the processing unit 126 activates the charging control unit 123 to charge the battery unit 124. In the emergency mode, the processing unit 126 activates the emergency boost unit 127 to drive the load 13 to perform the emergency lighting function. Through the above mechanism, the lighting device 1 can appropriately execute the charging mode to charge the battery unit 124, thus ensuring that the battery unit 124 has sufficient power when the emergency mode is executed. Therefore, the lighting device 1 can meet the needs of practical applications.

[0076] Furthermore, according to embodiments of the present invention, the lighting device 1 has a simple design, thus achieving various desired effects without significantly increasing costs. Therefore, the safety of the lighting device 1 can also be greatly improved. Thus, the lighting device 1 achieves high practicality to meet the needs of different applications.

[0077] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this invention. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this invention, or equivalent structural or procedural transformations made using the description and drawings of this invention, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this invention.

Claims

1. A lighting device with emergency lighting function, characterized in that, include: load; The main lighting power supply module includes an isolated constant current unit and is connected to the load and an external power supply. as well as An emergency lighting power supply module includes an emergency boost unit, a battery unit, a charging control unit, an isolation buck unit, an input unit, a processing unit, and a testing 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 isolation buck unit is connected to the charging control unit, the input unit is connected to the isolation buck unit, the processing unit is connected to the emergency boost unit, the battery unit, and the charging control unit, and the processing unit transmits signals to the main lighting power supply module. The testing unit is connected to the processing unit and is used to generate one or more square waves. When the processing unit detects the multiple square waves, it determines whether the number of the multiple square waves reaches a preset number. If the multiple square waves reach the preset number, it determines whether the multiple square waves are continuous and have the same length. If the processing unit determines that the multiple square waves are continuous and have the same length, it executes a transport mode and controls the battery unit to enter a static state.

2. The lighting device with emergency lighting function as described in claim 1, characterized in that, It also includes the isolated constant current unit, which comprises an opto-isolated signal receiving component, a signal processing component, and a constant current circuit.

3. The lighting device with emergency lighting function as described in claim 1, characterized in that, It also includes the isolation step-down unit, which includes an isolation transformer.

4. The lighting device with emergency lighting function as described in claim 1, characterized in that, The load includes one or more light-emitting diodes.

5. The lighting device with emergency lighting function as described in claim 1, 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.

6. The lighting device with emergency lighting function as described in claim 1, 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. In the charging mode, the processing unit activates the charging control unit to charge the battery unit. In the emergency mode, the processing unit activates the emergency boost unit to drive the load to perform the emergency lighting function.

7. The lighting device with emergency lighting function as described in claim 1, characterized in that, The test unit is also used to control the processing unit to execute the installation test mode. In the installation test mode, the processing unit shuts down the isolation constant current unit and starts the emergency boost unit to drive the load to perform an emergency lighting function test.

8. The lighting device with emergency lighting function as described in claim 1, characterized in that, The test unit is a button.

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