CN219678734U - Lamp box with emergency function - Google Patents
Lamp box with emergency function Download PDFInfo
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- CN219678734U CN219678734U CN202320893071.3U CN202320893071U CN219678734U CN 219678734 U CN219678734 U CN 219678734U CN 202320893071 U CN202320893071 U CN 202320893071U CN 219678734 U CN219678734 U CN 219678734U
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- 238000001514 detection method Methods 0.000 claims abstract description 40
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 23
- 230000033001 locomotion Effects 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims description 22
- 238000012360 testing method Methods 0.000 claims description 12
- 241001465382 Physalis alkekengi Species 0.000 claims description 2
- 238000005286 illumination Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 230000005856 abnormality Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model relates to a lamp box with an emergency function, which comprises a base, a circuit board assembly and a box cover, wherein one end of the circuit board assembly is provided with an input port, the other end of the circuit board assembly is sequentially provided with an induction interface, a row socket, a first setting port, a battery interface, a second setting port and an output port, and the circuit board assembly is provided with a mains supply unit, a voltage stabilizing unit, a control unit, a detection unit, an emergency power supply unit, a key unit, an indication unit, an induction unit and an output unit. The scheme has the functions of normal illumination, emergency illumination, human motion detection and Bluetooth control. The redundant wiring design in the lamp is solved, the modules work cooperatively, and the assembly is simple and convenient. The product integrates the self-checking function, automatically generates a self-checking log, avoids the inspection from a worker to the site, saves time and labor and saves labor cost. The product can be remotely controlled and automatically reported to the fault. The scheme improves the production efficiency and reduces the production and maintenance costs.
Description
Technical Field
The utility model relates to the field of lamp box products, in particular to a lamp box with an emergency function.
Background
The lamp box products in the existing market have the following defects:
(1) The function is single, as a lamp fitting, the trend of modularization of each function is presented, and the functions cannot work cooperatively;
(2) The lamp manufacturer needs to assemble a powerful lamp, needs to purchase and assemble modules with various functions, tends to cause the large volume of the lamp, has complex wiring, and cannot meet the requirements of flattening and attractive appearance of the lamp;
(3) For emergency lamps, the emergency lamps are inspected regularly according to the requirements of regulations, the reliability of the emergency lamps is ensured, the existing manual inspection is high in cost, and resource waste is caused.
(4) For the problems of the lamp, a user cannot accurately judge the problems, and the problems can be solved only by replacing different accessories.
In order to overcome the defects, the scheme provides the lamp box with the emergency function.
Disclosure of Invention
The utility model aims to solve the problems that the existing lamp box product has single function, each functional module can not work cooperatively, a powerful lamp is assembled, the module assembly of each function is needed to be purchased, the lamp is large in size and complex in wiring, the flattening and attractive requirements of the lamp can not be met, and the lamp has no periodic self-checking function. The specific solution scheme is as follows:
the utility model provides a take emergent function's lamps and lanterns box, includes the base, installs circuit board assembly on the base, covers circuit board assembly and the lid of base, circuit board assembly's one end is equipped with input port, and circuit board assembly's the other end is equipped with response interface, row socket, first setting port, battery interface, second setting port, output port in proper order, be equipped with commercial power supply unit, steady voltage unit, control unit, detecting element, emergent power supply unit, button unit, indicating element, sensing element, output unit on the circuit board assembly, control unit respectively with commercial power supply unit, steady voltage unit, detecting element, emergent power supply unit, button unit, indicating element, sensing element electricity are connected.
Further, the control unit is a Bluetooth control module.
Further, the output unit is an LED output end, and the LED output end is electrically connected with the output port.
Further, the utility power supply unit includes: the flyback power supply comprises a mains supply input end, a flyback controller, a flyback transformer, a Buck step-down circuit, a constant current output circuit and an output power setting port, wherein one end of the flyback controller is electrically connected with the mains supply input end, the other end of the flyback controller is electrically connected with the flyback transformer, the Buck step-down circuit is respectively electrically connected with the flyback transformer, the constant current output circuit and the Bluetooth control module, and the output power setting port is the second setting port and is electrically connected with the constant current output circuit.
Further, the voltage stabilizing unit includes: the Bluetooth control module comprises an auxiliary power supply controller, an auxiliary power supply transformer and a voltage stabilizing circuit, wherein one end of the auxiliary power supply controller is electrically connected with the mains supply input end, the other end of the auxiliary power supply controller is electrically connected with the auxiliary power supply transformer, and one end of the voltage stabilizing circuit is electrically connected with the auxiliary power supply transformer, and the other end of the voltage stabilizing circuit is electrically connected with the Bluetooth control module.
Further, the emergency power supply unit includes: the battery, charge control circuit, charging circuit, emergency switch circuit, emergency control circuit, emergent output power set up port, emergent output, charge control circuit respectively with auxiliary power transformer, bluetooth control module, charging circuit electricity are connected, the battery passes through the battery interface respectively with charging circuit, voltage stabilizing circuit, emergency switch circuit electricity are connected, emergency control circuit respectively with emergency switch circuit, emergent output electricity are connected, emergent output with the LED output electricity is connected, emergent output power set up port be first set up port and with emergency control circuit electricity is connected.
Further, the detection unit includes: the battery testing device comprises a mains supply detection circuit, an output detection circuit, a battery detection circuit and a manual testing circuit, wherein one end of the mains supply detection circuit is electrically connected with the mains supply input end, the other end of the mains supply detection circuit is electrically connected with the Bluetooth control module, one end of the output detection circuit is electrically connected with the LED output end, the other end of the output detection circuit is electrically connected with the Bluetooth control module, one end of the battery detection circuit is electrically connected with the battery through the battery interface, the other end of the battery detection circuit is electrically connected with the Bluetooth control module, and the manual testing circuit is electrically connected with the Bluetooth control module.
Further, the key unit comprises a PUSH dimming circuit, wherein the PUSH switch and the mains supply input end are arranged at the input port.
Further, the indicating unit comprises a state indicating circuit, wherein an indicating lamp interface and a manual switch interface of the manual testing circuit are arranged on the row of sockets.
Further, the sensing unit comprises a motion control module, wherein an interface of the motion control module is electrically connected with the sensing interface.
In summary, the technical scheme of the utility model has the following beneficial effects:
the utility model solves the problems that the existing lamp box product has single function, each functional module can not work cooperatively, a powerful lamp is assembled, the module assembly with each function is needed to be purchased, the lamp has large volume and complex wiring, the requirements of flattening and attractive appearance of the lamp can not be met, and the lamp has no periodic self-checking function. The scheme has the following advantages:
(1) The scheme has the functions of normal illumination, emergency illumination, human motion detection and Bluetooth control. The lamp can be used in various scenes such as automatic switching, light interaction, lighting of a person coming from the lamp, lighting of a person going from the lamp, and the like.
(2) The redundant wiring design in the lamp is integrally solved, the cooperative work among all modules is solved, and the assembly of a lamp factory is simple and convenient.
(3) The product integrates the self-checking function, automatically generates a self-checking log, avoids the inspection from a worker to the site, saves time and labor and saves labor cost.
(4) The product can be remotely controlled and automatically reported to the fault. Aiming at the reported faults, the staff can solve the problem in a targeted manner. The problem that accessories can be solved only by replacing the accessories for a plurality of times in case of abnormality is avoided.
(5) The scheme improves the production efficiency and reduces the production and maintenance cost.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments of the present utility model will be briefly described below. It will be apparent to those skilled in the art that the drawings in the following description are only a few embodiments of the present utility model and that other drawings may be derived from these drawings without inventive faculty.
FIG. 1 is a block diagram of a light box with emergency function of the present utility model;
FIG. 2 is an exploded view of the light box with emergency function of the present utility model;
FIG. 3 is a block diagram of the lid of the present utility model;
FIG. 4 is a schematic diagram of a circuit board assembly of the present utility model;
FIG. 5 is a circuit block diagram of the present utility model;
FIG. 6 is a circuit diagram of a control unit, a detection unit, a key unit, an indication unit, and an induction unit according to the present utility model;
FIG. 7 is a circuit diagram of a mains supply unit and an output unit of the present utility model;
fig. 8 is a circuit diagram of the voltage stabilizing unit and the emergency power supply unit of the present utility model.
Reference numerals illustrate:
10-base, 20-circuit board assembly, 21-input port, 22-sensing interface, 23-row socket, 24-first set port, 25-battery interface, 26-second set port, 27-output port, 30-lid.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 8, the lamp box with the emergency function comprises a base 10, a circuit board assembly 20 installed on the base 10, and a box cover 30 covering the circuit board assembly 20 and the base 10, wherein one end of the circuit board assembly 20 is provided with an input port 21, the other end of the circuit board assembly 20 is sequentially provided with an induction interface 22, a row socket 23, a first setting port 24, a battery interface 25, a second setting port 26 and an output port 27, the circuit board assembly 20 is provided with a mains supply unit, a voltage stabilizing unit, a control unit, a detection unit, an emergency supply unit, a key unit, an indication unit, an induction unit and an output unit, and the control unit is respectively electrically connected with the mains supply unit, the voltage stabilizing unit, the detection unit, the emergency supply unit, the key unit, the indication unit and the induction unit.
Specifically, the control unit is a bluetooth control module U10.
Specifically, the output unit is an LED output terminal CON2, and the LED output terminal CON2 is electrically connected to the output port 27.
Specifically, the utility power supply unit includes: the power supply device comprises a mains supply input end (L/N), a flyback controller U1, a flyback transformer T1, a Buck step-down circuit, a constant current output circuit U14 and an output power setting port K26, wherein one end of the flyback controller is electrically connected with the mains supply input end (L/N) through a main rectifying circuit BD1, the other end of the flyback controller U1 is electrically connected with the flyback transformer T1, the Buck step-down circuit is electrically connected with the flyback transformer T1, the constant current output circuit U14 and a Bluetooth control module U10 respectively, and the output power setting port K26 is a second setting port 26 and is electrically connected with the constant current output circuit U14.
In particular, the sensing unit comprises a motion control module, wherein an interface (HF/GND) of the motion control module is electrically connected with the sensing interface 22.
Specifically, the voltage stabilizing unit includes: the auxiliary power supply controller UK1, the auxiliary power supply transformer T7, the voltage stabilizing circuits U4 and U6, wherein one end of the auxiliary power supply controller UK1 is electrically connected with a mains supply input end (L/N) through the auxiliary rectifying circuit BK1, the other end of the auxiliary power supply controller UK1 is electrically connected with the auxiliary power supply transformer T7, one end of the voltage stabilizing circuits U4 and U6 is electrically connected with (plus 15V) of the auxiliary power supply transformer T7, the other ends of the voltage stabilizing circuits U4 and U6 are electrically connected with the Bluetooth control module U10, and the other ends of the voltage stabilizing circuits U4 and U6 are electrically connected with the motion control module (5V).
Specifically, the emergency power supply unit includes: the battery, charge control circuit, charging circuit, emergency switch circuit, emergency control circuit, emergent output power setting port K24, emergent output end, charge control circuit respectively with auxiliary power transformer T7, bluetooth control module U10, charging circuit electricity is connected, the battery passes through battery interface 25 respectively with charging circuit, voltage stabilizing circuit, emergency switch circuit electricity is connected, emergency control circuit respectively with emergency switch circuit, emergent output end electricity is connected, emergent output power setting port K24 is first setting port 24 and is connected with emergency control circuit electricity.
Specifically, the detection unit includes: the utility power detection circuit, output detection circuit, battery detection circuit, manual test circuit, utility power detection circuit one end is connected with the utility power input electricity, the other end is connected with bluetooth control module U10 electricity, output detection circuit one end is connected with the LED output electricity, the other end is connected with bluetooth control module U10 electricity, battery detection circuit one end is connected with the battery electricity through battery interface 25, the other end is connected with bluetooth control module U10 electricity, manual test circuit is connected with bluetooth control module U10 electricity.
Specifically, the key unit includes a PUSH dimmer circuit, wherein an external PUSH switch and a mains input terminal (L/N) are co-located at an input port 21 (including three wires) through a conductive wire. According to the scheme, equipment (such as a lighting lamp and the like) connected to an output port in a Mesh network (the Mesh network is a wireless Mesh network, such as a Bluetooth wireless network in the scheme) can be controlled through a PUSH switch and APP setting.
Specifically, the indication unit includes a status indication circuit, where the interface of the indicator light LED1 and the interface of the manual switch K23 of the manual test circuit are co-located in the socket 23.
Specifically, the integrated circuits shown in the circuit diagrams in fig. 6, 7 and 8 and the bluetooth control module U10 in this embodiment are all related art, and the specific circuit (or chip) operating principle and process thereof are not described in detail herein.
According to the scheme, the lithium iron phosphate battery is used, the environment-friendly requirement is met, and the lithium iron phosphate battery has higher reliability and safety. The normal illumination uses a flyback isolation scheme (flyback controller and flyback transformer), and the scheme has high efficiency, low standby power consumption and high output power, and can meet the requirement of LED output power. In addition, the independent auxiliary power supply design (auxiliary power supply controller and auxiliary power supply transformer) has small output power and low voltage, and provides a stable power supply for the Bluetooth control module U10 and battery charging.
Buck step-down circuit + constant current output circuit: the constant voltage source provided by the flyback transformer is converted into a stable constant current source, the stable constant current source is provided for the output of the LED, meanwhile, a current setting port (namely an output power setting port) is reserved in the circuit, so that a user can adapt according to the power of the lamp, and the circuit can receive PWM signals of the Bluetooth control module to carry out dimming control.
Commercial power detection circuit: and an optocoupler OP4 is adopted for isolation, so that a reliable commercial power signal is provided for the Bluetooth control module U10. This signal is sent to the bluetooth control module U10 to determine whether to enter an emergency output state. When the product operates normally, the signal product is in a normal illumination state; when the product normally operates, no signal is detected, and the product enters an emergency lighting state. Meanwhile, the port has the function of mains voltage detection, and meets the requirements in regulations: the voltage is lower than 0.65 times of the commercial power (220-240 VAC), the emergency state must be entered, and the emergency state must be exited when the voltage is higher than 0.85 times of the commercial power.
PUSH dimming circuit: by adopting the optical coupler OP1 for isolation, a user can be connected with the PUSH switch through the port in a matching way to provide a signal for the Bluetooth control module U10, and the Bluetooth control module U10 can make corresponding dimming control according to the signal, and the PUSH switch is operated by switching a lamp in a short time and is manually controlled by long time.
And the voltage stabilizing circuit comprises: the circuit is powered by an auxiliary power transformer and a battery to provide a stable power supply for the Bluetooth control module U10.
An output detection circuit: the LED output end is directly detected, a signal is provided for the Bluetooth control module U10, and according to the signal, the Bluetooth control module U10 judges the state of the LED lamp (namely, the lighting equipment).
An emergency switch circuit: the battery directly acts on the circuit, which is a battery discharge switch. When the Bluetooth control module U10 does not detect the commercial electric signal, the Bluetooth control module outputs a signal to the emergency switch circuit, and the product can be in an emergency state. The switch is used for controlling whether the battery enters a discharging state or not, so that the battery is prevented from being discharged by mistake, overdischarged and the like.
An emergency control circuit: the control circuit samples the output in real time and automatically adjusts the output, so that constant power output in an emergency state is realized. And the circuit provides an emergency output power setting port, so that a user can conveniently select power.
Battery detection circuitry: the circuit samples the battery port in real time, and the Bluetooth control module U10 judges whether the battery is normally connected or not and detects the battery voltage according to the signal.
And a charging control circuit: the control circuit is a battery charge switch. According to the signal of the Bluetooth control module U10, the battery is charged to be opened and closed, and the phenomenon of overcharging of the battery is avoided.
A charging circuit: the battery is provided with stable direct current charge, and the circuit has overcurrent and open circuit protection. Abnormal battery interfaces are prevented, and product damage is avoided.
Status indication circuit: the Bluetooth control module U10 receives signals, and can indicate the working state of the product and the occurrence of abnormality. And different power failures and working states are indicated through different states of the indicator lamp.
Manual test circuit: the button is used for detecting products on site and is convenient for on-site installation and debugging. Pressing the button for a short time, and checking the month function of the product; by pressing this button for a long time, the product enters the annual function check.
A motion control module: A. human body movement is detected, a movement signal is provided to the movement control module, and an automatic induction switch function of turning on and off the light of the coming light is realized. B. And detecting the ambient brightness, providing the field environment to the control module, and realizing the application of different scenes by matching with the control module (note that the module works in a normal illumination state, and the module fails in an emergency state).
Bluetooth control module U10: a control program is preset in the interior. The product is connected with a mesh network through a Bluetooth control module U10, so that communication with handheld equipment is realized. Signals of all the functional modules are detected and processed, so that various working modes of products are realized, and cooperative work among all the modules is realized.
In summary, the technical scheme of the utility model has the following beneficial effects:
the utility model solves the problems that the existing lamp box product has single function, each functional module can not work cooperatively, a powerful lamp is assembled, the module assembly with each function is needed to be purchased, the lamp has large volume and complex wiring, the requirements of flattening and attractive appearance of the lamp can not be met, and the lamp has no periodic self-checking function. The scheme has the following advantages:
(1) The scheme has the functions of normal illumination, emergency illumination, human motion detection and Bluetooth control. The lamp can be used in various scenes such as automatic switching, light interaction, lighting of a person coming from the lamp, lighting of a person going from the lamp, and the like.
(2) The redundant wiring design in the lamp is integrally solved, the cooperative work among all modules is solved, and the assembly of a lamp factory is simple and convenient.
(3) The product integrates the self-checking function, automatically generates a self-checking log, avoids the inspection from a worker to the site, saves time and labor and saves labor cost.
(4) The product can be remotely controlled and automatically reported to the fault. Aiming at the reported faults, the staff can solve the problem in a targeted manner. The problem that accessories can be solved only by replacing the accessories for a plurality of times in case of abnormality is avoided.
(5) The scheme improves the production efficiency and reduces the production and maintenance cost.
The above-described embodiments do not limit the scope of the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present utility model.
Claims (10)
1. The utility model provides a take emergent function's lamps and lanterns box, includes the base, installs circuit board assembly on the base, covers the lid of circuit board assembly and base, its characterized in that: one end of the circuit board assembly is provided with an input port, the other end of the circuit board assembly is sequentially provided with an induction interface, a row socket, a first setting port, a battery interface, a second setting port and an output port, the circuit board assembly is provided with a mains supply unit, a voltage stabilizing unit, a control unit, a detection unit, an emergency power supply unit, a key unit, an indication unit, an induction unit and an output unit, wherein the control unit is respectively and electrically connected with the mains supply unit, the voltage stabilizing unit, the detection unit, the emergency power supply unit, the key unit, the indication unit and the induction unit.
2. The light fixture box with emergency function according to claim 1, wherein: the control unit is a Bluetooth control module.
3. A light fixture box with emergency function according to claim 2, wherein: the output unit is an LED output end, and the LED output end is electrically connected with the output port.
4. A light fixture box with emergency function according to claim 3, wherein the mains supply unit comprises: the flyback power supply comprises a mains supply input end, a flyback controller, a flyback transformer, a Buck step-down circuit, a constant current output circuit and an output power setting port, wherein one end of the flyback controller is electrically connected with the mains supply input end, the other end of the flyback controller is electrically connected with the flyback transformer, the Buck step-down circuit is respectively electrically connected with the flyback transformer, the constant current output circuit and the Bluetooth control module, and the output power setting port is the second setting port and is electrically connected with the constant current output circuit.
5. The emergency light fixture of claim 4, wherein the voltage stabilizing unit comprises: the Bluetooth control module comprises an auxiliary power supply controller, an auxiliary power supply transformer and a voltage stabilizing circuit, wherein one end of the auxiliary power supply controller is electrically connected with the mains supply input end, the other end of the auxiliary power supply controller is electrically connected with the auxiliary power supply transformer, and one end of the voltage stabilizing circuit is electrically connected with the auxiliary power supply transformer, and the other end of the voltage stabilizing circuit is electrically connected with the Bluetooth control module.
6. A light fixture box with emergency function according to claim 5, wherein the emergency power supply unit comprises: the battery, charge control circuit, charging circuit, emergency switch circuit, emergency control circuit, emergent output power set up port, emergent output, charge control circuit respectively with auxiliary power transformer, bluetooth control module, charging circuit electricity are connected, the battery passes through the battery interface respectively with charging circuit, voltage stabilizing circuit, emergency switch circuit electricity are connected, emergency control circuit respectively with emergency switch circuit, emergent output electricity are connected, emergent output with the LED output electricity is connected, emergent output power set up port be first set up port and with emergency control circuit electricity is connected.
7. The light fixture box with emergency function according to claim 6, wherein the detection unit comprises: the battery testing device comprises a mains supply detection circuit, an output detection circuit, a battery detection circuit and a manual testing circuit, wherein one end of the mains supply detection circuit is electrically connected with the mains supply input end, the other end of the mains supply detection circuit is electrically connected with the Bluetooth control module, one end of the output detection circuit is electrically connected with the LED output end, the other end of the output detection circuit is electrically connected with the Bluetooth control module, one end of the battery detection circuit is electrically connected with the battery through the battery interface, the other end of the battery detection circuit is electrically connected with the Bluetooth control module, and the manual testing circuit is electrically connected with the Bluetooth control module.
8. The light fixture box with emergency function according to claim 7, wherein: the key unit comprises a PUSH dimming circuit, wherein a PUSH switch and the mains supply input end are arranged at the input port.
9. The light fixture box with emergency function according to claim 8, wherein: the indicating unit comprises a state indicating circuit, wherein an indicating lamp interface and a manual switch interface of the manual testing circuit are arranged on the row of sockets.
10. The light fixture box with emergency function according to claim 9, wherein: the sensing unit comprises a motion control module, wherein an interface of the motion control module is electrically connected with the sensing interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320893071.3U CN219678734U (en) | 2023-04-19 | 2023-04-19 | Lamp box with emergency function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320893071.3U CN219678734U (en) | 2023-04-19 | 2023-04-19 | Lamp box with emergency function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219678734U true CN219678734U (en) | 2023-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320893071.3U Active CN219678734U (en) | 2023-04-19 | 2023-04-19 | Lamp box with emergency function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219678734U (en) |
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2023
- 2023-04-19 CN CN202320893071.3U patent/CN219678734U/en active Active
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