Road sign lamp for rescue warning

Abstract

The invention relates to the technical field of illumination, and discloses a road sign lamp for rescue warning, which comprises a controller, at least two lamp strip light sources, interface terminals corresponding to each lamp strip light source, and a lamp strip main belt, the tooth-shaped structure arranged at one end of the interface terminal penetrates through the plastic insulating layer of the lamp strip main belt to be electrically connected with the electric lead of the lamp strip main belt, and the corresponding lamp strip light source is assembled on the lamp strip main belt. The controller comprises a mode control chip and LED driving chips, wherein the mode control chip is used for sending a light-emitting control signal corresponding to a selected light-emitting mode to a first LED driving chip in the at least two LED driving chips so as to enable the light bar light sources corresponding to the first LED driving chip to work, and the LED driving chips correspond to the light bar light sources. Therefore, the physical connection advantage of the connecting terminal is combined with the intelligent control capability of the controller, on the basis that the interface terminal provides excellent electrical connection performance, the road sign lamp can show colorful visual effects, and the reliability, coordination and flexibility of the road sign lamp are enhanced.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and in particular to a road sign light for rescue warning. Background Art

[0002] In emergency rescue and construction sites, it is crucial to ensure personnel safety and improve warning efficiency. LED light sources are widely used in the field of lighting and warning due to their advantages such as high brightness, low energy consumption and long life. However, road sign lights in related technologies are insufficient in reliability and flexibility. There is an urgent need for a rescue warning road sign light that is both stable and reliable, and can respond quickly and present a variety of lighting effects. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present application proposes a road sign light for rescue warning. The main technical solutions adopted by the present application include:

[0004] The embodiment of the present application provides a road sign light for rescue warning, the road sign light comprises a controller, at least two light bar light sources, an interface terminal corresponding to each light bar light source, and a light bar main belt; the corresponding light bar light source is assembled to the light bar main belt through the interface terminal, wherein a tooth structure is provided at a first end of the interface terminal, and the tooth structure passes through a plastic insulating layer of the light bar main belt and is electrically connected to a conductive wire of the light bar main belt;

[0005] The controller includes a mode control chip and an LED driver chip corresponding to each light bar light source;

[0006] A mode control chip, used for sending a light control signal corresponding to the selected light-emitting mode to a first LED driver chip among the at least two LED driver chips, so that the light bar light source corresponding to the first LED driver chip operates;

[0007] The first LED driver chip is used to send a light control signal to a second LED driver chip among the at least two LED driver chips, so that the light bar light source corresponding to the second LED driver chip operates.

[0008] In one embodiment, the light bar light source includes a circuit board with an LED unit, a male pin, an inner shell and a protective outer shell; the circuit board is arranged in the inner shell, the male pin is welded on the circuit board, and the protective outer shell covers the inner shell; the male pin is adapted to the punching structure at the second end of the interface terminal.

[0009] In one of the embodiments, the light bar light source includes a warning pattern light source, which is obtained by attaching an LED unit at a designated position of a circuit board according to a preset warning pattern.

[0010] In one of the embodiments, the connection between the interface terminal and the main strip of the light strip has an interface protection layer, and the interface protection layer has a main strip beer injection protrusion structure; the main strip beer injection protrusion structure is suitable for assembly with the corresponding light strip light source.

[0011] In one embodiment, the light bar light source includes a circuit board with an LED unit and a male pin welded on the circuit board; the male pin is provided with a connection panel, the male pin passes through the connection panel, and the connection panel has a hole position matching the main belt beer injection protrusion structure.

[0012] In one embodiment, the tooth-shaped structure of the interface terminal is obtained by forging; the tooth-shaped structure passes through the plastic insulating layer of the main belt of the light bar through a needle pressing process and contacts the conductive wire.

[0013] In one embodiment, the road sign light also includes a control button, one end of which is connected to a pin of a mode control chip and the other end is grounded; the mode control chip is burned with control programs corresponding to a plurality of preset light-emitting modes; the selected light-emitting mode is selected from a plurality of preset light-emitting modes in response to a triggering operation on the control button.

[0014] In one embodiment, the road sign lamp also includes a first voltage conversion unit and at least two second voltage conversion units, and the second voltage conversion units correspond to the LED driver chips one by one; the input end of the first voltage conversion unit receives the input voltage, and the output end of the first voltage conversion unit is connected to the input end of the mode control chip; the input end of the second voltage conversion unit receives the input voltage, and the output end of the second voltage conversion unit is connected to the input end of the LED driver chip.

[0015] In one embodiment, the first voltage conversion unit includes a diode D1, a resistor R1, a voltage regulator Z1, a transistor Q1, a capacitor C1 and a capacitor C2; the cathode of the diode D1 is used as the input end of the first voltage conversion unit, the anode of the diode D1 is connected to the first end of the transistor Q1 and one end of the resistor R1, the second end of the transistor Q1 is connected to one end of the capacitor C2, the other end of the capacitor C2 is grounded, and the second end of the transistor Q1 is used as the output end of the first voltage conversion unit; the third end of the transistor Q1 is connected to the other end of the resistor R1, one end of the capacitor C1 and the anode of the voltage regulator Z1; the other end of the capacitor C1 and the cathode of the voltage regulator Z1 are both grounded.

[0016] In one embodiment, the road sign light also includes a light bar power interface, which is connected to the light bar main strip; the light bar power interface uses at least two different interface types of connectors, suitable for connecting a mobile power supply; the at least two different interface types include USB type and DC type.

[0017] In the above embodiment, by designing an interface terminal with a toothed structure at one end, the corresponding light bar light sources are accurately assembled to the light bar main belt one by one, so as to ensure stable current and signal transmission between the light bar light source, the light bar main belt and the controller under various environmental conditions. At the same time, the controller part is also integrated with a mode control chip and a dedicated LED driver chip corresponding to each light bar light source, which can quickly respond to input instructions and accurately control the brightness, color and flashing mode of each light bar light source to achieve a highly personalized lighting effect. At this point, the physical connection advantages of the connection terminal are combined with the intelligent control capabilities of the controller. On the basis of the excellent electrical connection performance provided by the interface terminal, the road sign lamp can also show a rich and colorful visual effect, which significantly enhances the coordination and flexibility of the rescue warning road sign lamp, so that it can play an excellent role in various application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1a A structural block diagram of a road sign light for rescue warning provided according to an embodiment of the present application;

[0020] Figure 1b A schematic diagram of an interface terminal provided according to an embodiment of the present application;

[0021] Figure 1c A schematic diagram of connecting an interface terminal provided according to an embodiment of the present application to a main strip of a light bar;

[0022] Figure 1d A circuit schematic diagram of an LED driver chip and its peripheral circuits provided according to an embodiment of the present application;

[0023] Figure 2a A schematic diagram of a light bar light source component provided according to an embodiment of the present application;

[0024] Figure 2b A schematic diagram of a light bar light source provided according to an embodiment of the present application;

[0025] Figure 2c A schematic diagram of an interface terminal provided according to yet another embodiment of the present application;

[0026] Figure 3 A schematic diagram of a connection portion of a main light strip according to an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a male needle structure provided according to an embodiment of the present application;

[0028] Figure 5 A circuit schematic diagram of a mode control chip and its peripheral circuits provided according to an embodiment of the present application;

[0029] Figure 6a A structural block diagram of a controller provided according to an embodiment of the present application;

[0030] Figure 6b A circuit schematic diagram of a second voltage conversion unit provided according to an embodiment of the present application;

[0031] Figure 7 A circuit schematic diagram of a first voltage conversion unit provided according to an embodiment of the present application;

[0032] Figure 8 A schematic diagram of a road sign light for rescue warning provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] In emergency rescue and construction sites, the complexity and uncertainty of the environment require that rescue warning road signs should not only be eye-catching, but also be able to adapt to changing conditions. However, rescue warning road signs in related technologies have some deficiencies in design and function, which may reduce efficiency and even affect safety in practical applications. Specific limitations include the following:

[0035] 1. Rescue warning road sign lights in related technologies often need to be connected to a fixed power supply and are not compatible with mobile power supplies or DC power supplies. However, in emergency situations such as natural disasters or rescue operations in remote areas, this dependence on a fixed power supply may result in a failure to deploy and use them in a timely manner.

[0036] 2. In emergency situations, rapid response and flexible deployment are crucial. Rescue warning road sign lights in related technologies usually need to find a suitable installation location and install it fixedly, which not only limits the applicability of usage scenarios, but also slows down deployment.

[0037] 3. The rescue warning road sign lights in the related art may only have a single or several flashing lights, or can only emit a single color of light, and cannot form a line to warn the dangerous area. That is, this single warning method is not enough to convey complex warning information in certain emergency situations. In addition, the lack of warning symbols makes these lights limited in their effectiveness in conveying specific instructions.

[0038] 4. Many rescue warning road sign lights can only provide warning functions, but not lighting at the same time. At night or in low-light environments, this limits the field of vision of rescuers and affects operational efficiency.

[0039] Based on this, according to an embodiment of the present application, a road sign light embodiment for rescue warning is provided, such as Figure 1a As shown, the road sign light 100 for rescue warning includes a controller 110 , at least two light bar light sources 120 , an interface terminal 130 corresponding to each light bar light source, and a light bar main belt 140 .

[0040] Among them, the light bar light source 120 can refer to the light-emitting part of the road sign light used for rescue warning. Specifically, the light bar light source 120 can be composed of multiple monochrome or multi-color LED units (LED lamp beads), which can emit light of different colors and intensities according to the instructions of the controller 110 to achieve warning and lighting functions.

[0041] The main light strip 140 may refer to a component that transmits power and control signals among multiple light strip light sources to achieve electrical connection and signal synchronization of the entire road sign light system. Specifically, the main light strip may include a conductive wire 143 and a plastic insulating layer 141, wherein the conductive wire 143 is the core of the main light strip and may be composed of multiple strands of copper wire for transmitting current and providing power to the LED units on the light strip. A plastic insulating layer 141 is wrapped around the outside of the conductive wire to prevent current leakage and short circuit and ensure safe use. Exemplarily, 41 strands of copper wire with a cross-sectional area of ​​0.16 square millimeters may be taken and twisted into copper strands with a twisting pitch of 20 mm by a stranding machine as conductive wires. Further, the center of the copper strand is placed, and the PVC granules are heated, melted and extruded by an extruder to form a layer of plastic insulating layer 141 around the copper strand, and finally combined to form an extruded main wire with insulation protection function. Further, the extruded main wire may be used as the main light strip 140. It is understandable that the load current of the LED unit is usually 0.1A, while the current carried by the copper stranded wire with a twisting distance of 20mm by a stranding machine is between 6A and 8A. Therefore, the copper stranded wire can provide good conductivity when carrying at least 60 to 80 LED unit components. In addition, such a design also allows multiple main strips of light strips to be connected in parallel, thereby increasing the load length or connection length, so that the road sign lights can show colorful visual effects.

[0042] The interface terminal 130 may refer to a component used to connect the light bar light source and the main light bar belt. Based on the tooth structure at one end, the light bar light source can be fixed on the main light bar belt. For example, the interface terminal 130 may be a rectangular block with a 6MM foot at the bottom and a concave-convex tooth structure. Please refer to Figure 1b , that is, the first end of the interface terminal 130 is provided with a tooth structure 131, and the tooth structure 131 is a sawtooth structure with convex and concave. Further, during assembly, please refer to Figure 1c The protruding part of the tooth-like structure 131 can pierce the plastic insulating layer 141 of the main light strip 140, while the concave part of the tooth-like structure 131 reserves a certain contact space, which can allow multiple copper strands to be inserted into it when contacting the conductive wire 143, thereby increasing the contact area with the conductive wire 143 and achieving a good electrical connection.

[0043] Furthermore, the main light strip is also connected to a controller 110, which may be a module component responsible for managing and controlling the working state of the light strip light source. Specifically, the controller 110 includes a mode control chip 111 and an LED driver chip corresponding to each light strip light source.

[0044] The mode control chip 111 may refer to a circuit part responsible for processing and sending control signals to manage the light-emitting mode of the light bar light source 120. For example, the mode control chip 111 may be an integrated circuit chip including a microprocessor or a microcontroller, which can send control signals according to a preset program or external input to determine the light-emitting state of the light bar light source, which may be constant light, flashing, or color change, etc.

[0045] The LED driver chip may refer to a circuit part for receiving a control signal from the mode control chip 111 and driving the corresponding light bar light source 120 to work. It should be understood that each group of light bar light sources 120 is equipped with a corresponding LED driver chip, that is, each LED driver chip only independently drives one light bar light source 120 to ensure that it can work according to the predetermined mode.

[0046] Specifically, the mode control chip 111 can be used to send a light control signal corresponding to the selected light mode to the first LED driver chip 113 of the at least two LED driver chips, so that the light bar light source corresponding to the first LED driver chip 113 works. Further, the first LED driver chip 113 can also be used to send a light control signal to the second LED driver chip 115 of the at least two LED driver chips, so that the light bar light source 120 corresponding to the second LED driver chip 115 works.

[0047] For example, if a multi-channel constant current chip is used as an LED driver chip, please refer to Figure 1d , the mode control chip will first send an accurate light control signal to the first chip among the multiple multi-channel constant current chips, that is, the first LED driver chip 113, which includes parameters such as brightness, color and flashing frequency required for the selected light mode. The control signal will be input to the DIN pin of the first LED driver chip 113 to enter the chip. The output ports OUT1~OUT12 of the first LED driver chip 113 are connected to the LED units in the light bar light source 120, that is, the negative poles of the light emitting diodes L2~L19. Therefore, after receiving the control signal, the first LED driver chip 113 can drive the corresponding LED units in the light bar light source 120 through its output ports OUT1~OUT12 to work according to the predetermined light emitting mode to achieve dynamic and fine lighting effects. Optionally, multiple resistors are also connected in series in the light emitting diodes L2~L19 to reduce the voltage and limit the current of the light emitting diodes L2~L19 to prevent the light emitting diodes from burning out.

[0048] Furthermore, the first multi-channel constant current chip (as the first LED driver chip 113) not only drives its corresponding light bar light source 120, but also forwards the received light control signal to the next-level multi-channel constant current chip, that is, the second LED driver chip 115, via the DOUT pin, so that the second LED driver chip 115 drives its corresponding light bar light source 120 to work. So far, multiple LED driver chips can form a cascade structure, through which the controller 110 can achieve cascade control of multiple light bar light sources 120 using only one mode control chip 111, so that the rescue warning road sign lamp as a whole can present flexible and changeable lighting effects.

[0049] It should be emphasized that in order to ensure that the rescue warning road sign lights can play an excellent role in various application scenarios, in this embodiment, first of all, it is considered to assemble multiple light bar light sources onto the light bar main belt; secondly, in the face of the need to assemble multiple light bar light sources onto the light bar main belt, further consideration is given to how to provide excellent electrical connection performance, and an interface terminal with a toothed structure at one end is designed, so that the multiple light bar light sources can be accurately assembled with the light bar main belt while ensuring sufficient electrical connection; finally, on the basis of the hardware for the precise assembly of the multiple light bar light sources with the light bar main belt, it is also necessary to consider how to control the light bar light source on the basis of the hardware. Therefore, a mode control chip is configured for the overall hardware basis, and a dedicated LED driver chip is specially configured for each light bar light source, so that the mode control chip and the dedicated LED driver chip corresponding to each light bar light source can be combined to accurately control the brightness, color and flashing mode of each light bar light source.

[0050] In the above embodiment, by designing an interface terminal with a toothed structure at one end, the corresponding light bar light sources are accurately assembled one by one onto the main light bar belt, so as to ensure stable current and signal transmission between the light bar light source, the main light bar belt and the controller under various environmental conditions. At the same time, the controller part is also integrated with a mode control chip and a dedicated LED driver chip corresponding to each light bar light source, which can quickly respond to input instructions and accurately control the brightness, color and flashing mode of each light bar light source to achieve a highly personalized lighting effect. At this point, the physical connection advantages of the connection terminal are combined with the intelligent control capabilities of the controller. On the basis of the excellent electrical connection performance provided by the interface terminal, the road sign lamp can also show a rich and colorful visual effect, which significantly enhances the coordination and flexibility of the rescue warning road sign lamp, so that it can play an excellent role in various application scenarios.

[0051] In some embodiments, see Figure 2a The light bar light source includes a circuit board 210 with LED units attached, a male pin 220, an inner shell 230 and a protective outer shell 240.

[0052] Specifically, the PCB board with wires arranged can be used as the circuit board 210, and the corresponding LED unit can be fixed by welding and mounted on the circuit board 210. Then, three metal male pins 220 of conductive material are welded on the circuit board 210 to ensure that the current and signal can be effectively transmitted. Further, the circuit board 210 with the male pins 220 welded is subjected to beer injection molding (injection molding) so that it can form a light bar light source. It should be noted that before beer injection, the circuit board 210 can be loaded into the inner shell 230 to protect the components on the circuit board 210 from damage during beer injection molding. Finally, after the beer injection process, a shell with a covering structure is formed on the basis of the inner shell 230, that is, the protective shell 240 as the outermost structure of the light bar light source 120, which forms a double protection structure for the internal circuit board 210 and the LED unit together with the inner shell 230. Optionally, a groove with a small outside and a large inside can be provided at the bottom of the protective shell 240 formed by beer injection, which is used to install the silicone ring 250 to play a role in dustproof and waterproof. For example, the structural diagram of the finally assembled light bar light source 120 may be shown in 2b, where the circuit board 210 is disposed in the inner shell 230, the male pin 220 is welded on the circuit board 210, and the protective outer shell 240 covers the inner shell 230. A silicone ring 250 is also installed at the bottom of the protective outer shell 240.

[0053] Further, in order to better connect the light bar light source and the main light bar, please refer to Figure 2c , the other end of the interface terminal 130 may also be provided with a punching structure 133. It is also understandable that, please continue to refer to Figure 2bThe male pin 220 is adapted to the punching structure at the second end of the interface terminal 130. That is, the male pin 220 can be inserted into the hole 133 of the interface terminal 130, and the punching structure at the second end of the interface terminal can realize a stable connection between the light bar light source and the main strip of the light bar.

[0054] In the above embodiment, the dual protection structure of the inner shell and the protective outer shell protects the internal components from physical damage and environmental factors, thereby ensuring the stability and durability of the light bar light source. At the same time, through the cooperation of the male pin and the interface terminal, a stable connection between the light bar light source and the main belt of the light bar can be achieved, thereby improving the overall reliability of the road sign light used for rescue warning.

[0055] In some embodiments, the light bar light source includes a warning pattern light source, which is obtained by attaching LED units at designated positions of a circuit board according to a preset warning pattern.

[0056] Among them, warning pattern light sources can refer to those light bar light sources designed to display specific warning information or symbols. Specifically, the warning pattern light source is based on the arrangement of the preset warning pattern, and the LED units are pasted on the specific position of the circuit board to form a regional structure with a warning function. When these LED units are activated and lit, they will show the preset warning pattern, thereby providing a clear visual alarm when needed.

[0057] For example, first, a corresponding pattern or symbol can be designed according to the warning information to be conveyed, and laid out on a PCB circuit board. Then, a colored LED is attached to a designated position with a warning pattern to form a warning pattern light source. Furthermore, the warning pattern light source has different patterns and luminous colors according to different needs and scenes, such as controlling yellow light and red light to flash, and white light to be always on. Yellow light and red light flashing can warn passers-by to stay away from the warning area and not to go there; and white light is always on for on-site lighting operations. In addition, the flashing effect can be selected according to different application scenarios to provide a variety of modes.

[0058] In the above implementation, by designing the warning pattern light source, the rescue warning road sign light can not only provide lighting but also effectively convey warning information, thereby improving the safety of rescue and construction sites.

[0059] In some embodiments, see Figure 3 The connection between the interface terminal 130 and the main light strip 140 has an interface protection layer 310 , and the interface protection layer 310 has a main strip beer injection protrusion structure 311 .

[0060] The interface protection layer 310 refers to a protective structure covering the connection between the main light strip 140 and the interface terminal 130. Specifically, the interface protection layer 310 can be a structure formed by beer-casting the shape of PP material after the main light strip 140 and the interface terminal 130 are connected, which covers the connection area between the interface terminal 130 and the main light strip 140, thereby enhancing the protection performance of the connection.

[0061] Furthermore, when the connection area between the main light strip 140 and the interface terminal 130 is molded by beer injection, a main light strip beer injection protrusion structure 311 can be designed, which is suitable for assembly with the corresponding light strip light source 120. Specifically, the main light strip beer injection protrusion structure 311 can also be a protruding conical structure formed by beer injection (injection molding) process using PP material on the surface of the interface protection layer 310. Through the main light strip beer injection protrusion structure 311, when it is necessary to assemble the main light strip 140 and a light strip light source 120, additional mechanical stability can be provided to help the interface terminal 130 to be accurately stuck on the male pin 220 to form a tight-fitting structure, ensuring that the light strip light source and the main light strip are tightly connected to prevent loosening or falling off.

[0062] In the above embodiment, the overall structure of the assembled light bar main belt 140 and the interface terminal 130 is beer-injected to form an interface protection layer at the connection, thereby protecting the connection part between the interface terminal and the light bar main belt and preventing damage from physical damage, water intrusion or other environmental factors, thereby ensuring the stability and reliability of the electrical connection. Furthermore, a main belt beer-injection protrusion structure matching the bottom structure of the light bar light source is also designed. When the light bar light source is connected to the light bar main belt through the interface terminal, the main belt beer-injection protrusion structure can be clamped with the male pin structure of the light bar light source to form a stable mechanical connection, so that the light bar light source can be firmly installed on the light bar main belt.

[0063] In some embodiments, the light bar light source 120 includes a circuit board with LED units attached thereto and a male pin, and the male pin 220 is soldered on the circuit board.

[0064] Specifically, the male needle 220 is provided with a connection panel 410, and the male needle 220 passes through the connection panel 410, and the connection panel 410 has a hole 411 that matches the main belt beer injection protrusion structure. Exemplarily, the connection panel 410 can refer to a planar structure made of insulating material, which can provide fixation and protection for the male needle 220. Please refer to Figure 4 There is a hole in the middle of the connecting panel 410, which matches the diameter of the male needle 220 and allows the male needle 220 to pass through. There is also an oval hole (oval) at the left and right edges of the connecting panel 410, which matches the shape of the main belt beer injection protrusion structure. Please continue to refer to Figure 3During assembly, it can be aligned with the main belt beer injection protrusion structure 311 and clamped to form a tight fit, thereby ensuring that the male needle 220 can be correctly and firmly connected with the interface terminal 130.

[0065] In the above embodiment, a connection panel with a public security hole is designed for the male needle, which not only provides a stable installation platform for the male needle and protects the male needle from being damaged during installation or transportation, but also ensures the correct alignment and stable connection between the light source of the light strip and the main belt of the light strip, thereby improving the installation efficiency and reliability of the road sign lamp system.

[0066] In some embodiments, the tooth-shaped structure of the interface terminal is obtained by forging.

[0067] Among them, forging and pressing refers to a metal processing process that combines the characteristics of forging and pressing to shape and form metal workpieces. Specifically, during the forging and pressing process, the metal material is formed through a die at high temperature while applying pressure to obtain the desired shape and size, ultimately forming an interface terminal with a toothed structure at one end.

[0068] It is understandable that when making the interface terminal, red copper (also called red copper) can be used as the raw material for making the interface terminal, that is, the blank. For example, the cylindrical blank can be sawed into a length suitable for processing by a commonly used extrusion molding machine (can be 3 meters), that is, the material is cut and the next process can be carried out.

[0069] It should be understood that the hardness of copper has a great influence on the strength and service life of the extrusion die. In order to save materials, the blank can be cut from rods. The normal hardness of the rod is between 80 and 100 HV, so in order to ensure the stable production of the mold, annealing the blank is a very necessary process. Therefore, after the cutting is completed, the copper material of the cut material needs to be annealed to reduce the hardness of the copper material to 50-60 HV. At this time, it is more convenient to extrude the annealed copper material than to extrude the unannealed copper material. At the same time, in order to reduce friction resistance and facilitate material flow, during the extrusion process, the core of the extrusion die cavity structure can adopt a tapered interference fit method to ensure that the cavity has sufficient strength to extrude and deform the copper material.

[0070] After extrusion, the cylindrical overall billet is extruded into multiple small rectangular structures that are initially in the shape of interface terminals. Further, the extruded copper material can be placed in the mold for forging and forming. However, it should be noted that lubrication is also required in the forging and forming process. Since the lubrication effect will directly affect the service life of the forging die and the product quality of the interface terminal produced in the end, the lubrication method is crucial. It is necessary to consider both the reliability and ease of use of the lubrication effect and the economic efficiency of the production cost. For the forging of copper non-ferrous metals, high-temperature lubricating oil can be used. Its liquid state is more convenient to use and clean, and its lubrication performance remains stable and reliable after the product and mold are heated during forging. Finally, after the forging and forming process, multiple small rectangular structures that are initially in the shape of interface terminals can be forged into an accessory structure with a rectangular top and a 6MM foot at the bottom, and teeth on the foot.

[0071] Furthermore, in order to achieve a stable connection with the light source of the light bar, the satin pressed parts must be punched. It should be noted that before starting, the punching equipment should be preheated to above 200°C to prevent the temperature of the parts from dropping rapidly and falling into the brittle zone. At the same time, during the punching operation, the punch should also be preheated to a higher temperature. This preheating measure helps to reduce the cooling rate of metal parts during the punching process, reduce the risk of cracks on the edge of the hole caused by rapid cooling, and ensure the quality of the punching.

[0072] Finally, the punched accessories are cleaned and oxidized. It should be noted that when cleaning, a copper cleaning agent that does not contain sulfur, chlorine or phosphorus can be used. Since long-term high-temperature cleaning will increase the risk of corrosion and scratching the workpiece, the cleaning should be carried out within 45 degrees Celsius as much as possible, and the cleaning time should be controlled within 1-2 minutes, not too long. And after cleaning, be sure to blow dry in time. Since the cleaning agents used are mainly water-based, timely drying and oxidation of the punched accessories, i.e., the interface terminals, can effectively prevent the probability of copper rust.

[0073] It should be noted that the tooth structure 131 of the interface terminal 130 passes through the plastic insulating layer 141 of the main strip 140 of the light bar and contacts the conductive wire 143 through the pin pressing process. The pin pressing process refers to a method of using external force to strongly combine the contact surface of the terminal with the conductive wire in the cable. Specifically, during the crimping process, please continue to refer to Figure 1c, the interface terminal 130 should be pressed tightly on the main strip 140 until the plastic insulating layer 141 wrapped around it is penetrated, so that the conductive wire 143 is completely pressed into the concave part of the toothed structure 131. At the same time, it is also necessary to control the degree of pressing to prevent the main strip 140 from being penetrated and damaged due to excessive pressure. Finally, through the needle pressing process, the toothed structure 131 of the interface terminal 130 can pass through the plastic insulating layer 141 of the main strip 140 and contact the conductive wire 143 to ensure the reliability and mechanical stability of the electrical connection.

[0074] In the above embodiment, good conductivity and plasticity are selected as the raw materials for making the interface terminal, and the interface terminal is processed through multiple processes and finally forged into a finished interface terminal with a toothed structure. Then, through the needle pressing process, the toothed structure of the interface terminal passes through the plastic insulating layer of the main strip of the light bar and contacts the conductive wire. Finally, through this series of fine process steps, the toothed structure of the interface terminal can form a stable and reliable electrical connection with the main strip of the light bar, ensuring the stable operation of the entire road sign light system and the long-term reliability of the entire system.

[0075] In some embodiments, see Figure 5 The road sign light also includes a control button 510. One end of the control button 510 is connected to a pin of the mode control chip 111, and the other end is grounded. The mode control chip 111 is burned with control programs corresponding to a plurality of preset light-emitting modes; the selected light-emitting mode is selected from a plurality of preset light-emitting modes in response to a triggering operation on the control button.

[0076] Among them, the control button 510 can be a physical button, allowing the user to press the control button to trigger different operations to interact with the road sign light system. For example, the user can press and hold or press twice to trigger different operations. A variety of preset lighting modes can refer to modes pre-programmed by a software program, which can be constant light, flashing, color change or brightness adjustment, etc., for providing a variety of lighting and warning modes for appropriate visual warnings in different rescue or construction scenarios. Selecting a lighting mode refers to a specific mode selected and activated by the user from a variety of preset lighting modes by triggering the control button. Once selected, the road sign light will emit light according to the instructions of the mode.

[0077] Exemplarily, when the user presses the control button 510, a trigger operation occurs, the mode control chip 111 receives a signal, and responds to the trigger operation according to a control program pre-burned in the chip, determines a light-emitting mode corresponding to the trigger operation from a plurality of preset light-emitting modes, and sends a control signal DO corresponding to the light-emitting mode to the LED driver chip through the fifth pin after capacitor filtering, so as to drive the light strip light source to light up according to the corresponding light-emitting mode.

[0078] In the above embodiment, the various lighting modes and behaviors of the road sign light are predefined by the software code stored in the mode control chip, i.e., the control program. And in response to different key input operations of the user, the light bar light source is controlled to realize different lighting modes. This design allows the user to flexibly select and switch the lighting mode of the road sign light according to different rescue or construction needs, thereby improving the practicality and flexibility of the road sign light.

[0079] In some embodiments, see Figure 6a The road sign lamp further includes a first voltage conversion unit 610 and at least two second voltage conversion units 620 .

[0080] Among them, the first voltage conversion unit 610 and the second voltage conversion unit 620 can both be circuit loops for converting input voltage into a voltage suitable for the operation of the mode control chip 111 and the LED driver chip. Specifically, the input end of the first voltage conversion unit 610 is used to receive the input voltage from the external input power supply, and the output end of the first voltage conversion unit 610 is connected to the input end of the mode control chip 111. Exemplarily, when the external input power supply provides a DC voltage of 5 to 24V, it is first input to the input end of the first voltage conversion unit 610, and then the 5 to 24V voltage is converted into a 3.6V voltage through the circuit structure inside the first voltage conversion unit 610, and finally the converted voltage is transmitted to the mode control chip 111 from the output end of the first voltage conversion unit 610.

[0081] It should be understood that the second voltage conversion unit 620 corresponds to the LED driver chip one-to-one, that is, the input end of the second voltage conversion unit 620 receives the input voltage, and the output end of the second voltage conversion unit 620 is connected to the input end of the corresponding LED driver chip. Specifically, the second voltage conversion unit 620 also receives the input voltage through its input end, but its output end is connected to the input end of a corresponding LED driver chip. That is, each LED driver chip has a dedicated second voltage conversion unit 620 to ensure that each LED driver chip can obtain the appropriate voltage. For example, please refer to Figure 6b The second voltage conversion unit 620 can be a DC-DC boost circuit. When the external input power supply provides a DC voltage input of 5 to 24V, it passes through the reverse protection diodes D2, D3 and D4, the voltage divider resistor R2, the feedback resistors R3 and R4, the filter capacitors C4 and C5, the power chip U1 and the inductor L1 to form a boost circuit, which boosts the voltage below 24V to 24V and outputs it for use by the subsequent circuit, that is, providing a stable 24V power input for the LED driver chip.

[0082] In the above embodiment, the first voltage conversion unit is used to ensure that the mode control chip obtains a stable and appropriate power supply. The plurality of second voltage conversion units are used to ensure that each corresponding LED driver chip can operate at its optimal voltage to drive the LED light bar light source. At the same time, this separate power supply design also helps to isolate different parts of the circuit, reduce mutual interference, and improve the stability of the system.

[0083] In some embodiments, see Figure 7 The first voltage conversion unit 610 includes a diode D1, a resistor R1, a voltage regulator Z1, a transistor Q1, a capacitor C1 and a capacitor C2.

[0084] Wherein, the diode D1 can be a transient suppression diode, which is reversely connected to the input end of the first voltage conversion unit, and is used to receive the input voltage provided by the external input power supply to prevent abnormal voltage from burning the subsequent circuit. Specifically, the cathode of the diode D1 is used as the input end of the first voltage conversion unit, the anode of the diode D1 is connected to the first end of the transistor Q1 and one end of the resistor R1, the second end of the transistor Q1 is connected to one end of the capacitor C2, the other end of the capacitor C2 is grounded, and the second end of the transistor Q1 is used as the output end of the first voltage conversion unit. The third end of the transistor Q1 is connected to the other end of the resistor R1, one end of the capacitor C1 and the positive electrode of the voltage regulator Z1. The other end of the capacitor C1 and the negative electrode of the voltage regulator Z1 are both grounded.

[0085] It can be understood that the transistor Q1 works with the voltage regulator Z1, the bias resistor R1, the filter capacitor C1 and the filter capacitor C2 to construct a voltage regulation circuit. Exemplarily, when the external input power supply provides a DC voltage of 5 to 24V, after being input to the input end of the first voltage conversion unit 610, it first passes through the diode D1 for circuit protection, and then through the voltage conversion circuit composed of the transistor Q1, the voltage regulator Z1, the bias resistor R1, the filter capacitor C1 and the filter capacitor C2, the 5 to 24V voltage is converted into a 3.6V voltage, and finally the converted 3.6V voltage is transmitted from the emitter of the transistor Q1 to the input end 710 of the mode control chip 111. Optionally, the filter capacitor C1 and the filter capacitor C2 can both use 1000PF / 100V capacitors, which have the function of passing AC and blocking DC, ensuring that the voltage transmitted to the mode control chip 111 will not change due to fluctuations in the input power supply.

[0086] In the above embodiment, a voltage conversion unit capable of processing a voltage input of 5 to 24 V is constructed using a diode D1, a resistor R1, a voltage regulator Z1, a transistor Q1, a capacitor C1, and a capacitor C2. This design enables the road sign lamp to be compatible with mobile power supplies or power supply devices of various voltages, showing a strong power supply adaptability. It can easily cope with the access of different power supplies, and no matter which power supply device is used, it can ensure the normal operation of the road sign lamp, greatly enhancing its practicality in various environments.

[0087] In some embodiments, see Figure 8 The road sign light also includes a light bar power interface 810 , which is connected to the light bar main belt 140 .

[0088] The light bar power interface 810 may be a component for connecting a power line and a main light bar strip, allowing external input power to be input into the road sign light from here. Moreover, the light bar power interface 810 is directly connected to the main light bar strip, and as a key connection point, is responsible for connecting the power supply to the electrical system of the light bar, thereby providing the required power for the controller 110, the main light bar strip 140 and the light bar light source 120.

[0089] Specifically, the light bar power interface 810 uses at least two connectors of different interface types. That is, the light bar power interface 810 can allow at least two connectors that meet specific interface type standards, suitable for connecting to a mobile power source to transmit electrical energy. Among them, at least two different interface types may include USB type and DC type. Exemplarily, the USB type connector 812 allows the road sign light to be powered by a USB charging cable, that is, the light bar can use a USB power adapter, a computer USB port or other charging device with a USB interface as a power source. Similarly, the DC type connector 814 may refer to an interface designed specifically for a DC power supply, which can allow the road sign light to be powered by a battery, a mobile power supply or a DC power adapter, that is, the light bar can be directly connected to a DC power source, such as a car charger or other DC power supply device.

[0090] In the above implementation, by designing at least two different types of interfaces for the light bar power interface, more connection options are provided, so that the light bar can be compatible with a variety of power devices, which greatly enhances the applicability and flexibility of the road sign light, enabling it to adapt to different power environments and user needs. At the same time, this design makes the road sign light not only more convenient for outdoor use, but also improves its practicality in emergency situations.

[0091] It should be understood that in the present embodiment, a road sign light for rescue warning is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions. Each module in the above-mentioned road sign light for rescue warning can be implemented in whole or in part through software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.

[0092] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0093] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0094] The present application is described with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, and the combination of the process and / or box in the flowchart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0095] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0096] These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0098] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0099] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0100] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0101] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0102] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A road sign light for rescue warning, characterized in that: The road sign light comprises a controller, at least two light bar light sources, an interface terminal corresponding to each light bar light source and a light bar main belt; the corresponding light bar light source is assembled to the light bar main belt through the interface terminal, wherein a tooth structure is provided at a first end of the interface terminal, and the tooth structure passes through a plastic insulating layer of the light bar main belt and is electrically connected to a conductive wire of the light bar main belt; The controller includes a mode control chip and an LED driver chip corresponding to each light bar light source; The mode control chip is used to send a light control signal corresponding to the selected light-emitting mode to a first LED driver chip among the at least two LED driver chips, so that the light bar light source corresponding to the first LED driver chip operates; The first LED driver chip is used to send the light control signal to a second LED driver chip among the at least two LED driver chips, so that the light bar light source corresponding to the second LED driver chip operates.

2. The road sign lamp according to claim 1, characterized in that: The light bar light source comprises a circuit board with LED units attached, male pins, an inner shell and a protective outer shell; The circuit board is arranged in the inner shell, the male pins are welded on the circuit board, and the protective outer shell covers the inner shell; The male pin is adapted to the punching structure of the second end of the interface terminal.

3. The road sign lamp according to claim 2, characterized in that: The light bar light source comprises a warning pattern light source, and the warning pattern light source is obtained by attaching the LED unit to a designated position of the circuit board according to a preset warning pattern.

4. The road sign lamp according to claim 1, characterized in that: The connection between the interface terminal and the main strip of the light bar is provided with an interface protection layer, and the interface protection layer is provided with a main strip beer injection protrusion structure; The main belt beer injection protrusion structure is suitable for assembly with the corresponding light source of the light bar.

5. The road sign lamp according to claim 4, characterized in that: The light bar light source comprises a circuit board with LED units attached thereto and a male pin, wherein the male pin is welded on the circuit board; The male needle is provided with a connection panel, the male needle passes through the connection panel, and the connection panel has a hole position matching the beer injection protrusion structure of the main belt.

6. The road sign lamp according to claim 1, characterized in that: The toothed structure is obtained by forging; The toothed structure passes through the plastic insulating layer of the main strip of the light bar through a needle pressing process and contacts the conductive wire.

7. The road sign lamp according to any one of claims 1 to 6, characterized in that: The road sign lamp further comprises a control button, one end of which is connected to the pin of the mode control chip, and the other end of which is grounded; The mode control chip is burned with control programs corresponding to a plurality of preset light-emitting modes; The selected lighting mode is selected from the plurality of preset lighting modes in response to a triggering operation on the control button.

8. The road sign lamp according to any one of claims 1 to 6, characterized in that: The road sign lamp further comprises a first voltage conversion unit and at least two second voltage conversion units, wherein the second voltage conversion units correspond one to one with the LED driving chip; An input terminal of the first voltage conversion unit receives an input voltage, and an output terminal of the first voltage conversion unit is connected to an input terminal of the mode control chip; The input end of the second voltage conversion unit receives the input voltage, and the output end of the second voltage conversion unit is connected to the input end of the LED driving chip.

9. The road sign lamp according to claim 8, characterized in that: The first voltage conversion unit includes a diode D1, a resistor R1, a voltage regulator Z1, a transistor Q1, a capacitor C1 and a capacitor C2; The cathode of the diode D1 is used as the input end of the first voltage conversion unit, the anode of the diode D1 is connected to the first end of the transistor Q1 and one end of the resistor R1, the second end of the transistor Q1 is connected to one end of the capacitor C2, the other end of the capacitor C2 is grounded, and the second end of the transistor Q1 is used as the output end of the first voltage conversion unit; The third end of the transistor Q1 is connected to the other end of the resistor R1, one end of the capacitor C1 and the positive electrode of the voltage regulator Z1; the other end of the capacitor C1 and the negative electrode of the voltage regulator Z1 are both grounded.

10. The road sign lamp according to any one of claims 1 to 6, characterized in that: The road sign light also includes a light bar power interface, and the light bar power interface is connected to the light bar main belt; The light bar power interface adopts connectors of at least two different interface types, which are suitable for connecting to a mobile power source; the at least two different interface types include USB type and DC type.

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