Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

201 results about "LED circuit" patented technology

In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current supply (either DC or AC, see below) to light the LED at the required brightness, but must limit the current to prevent damaging the LED. The voltage drop across an LED is approximately constant over a wide range of operating current; therefore, a small increase in applied voltage greatly increases the current. Very simple circuits are used for low-power indicator LEDs. More complex, current source circuits are required when driving high-power LEDs for illumination to achieve correct current regulation.

Light-emitting diode circuit with sequence function, light-emitting diode circuit package, and light-emitting diode light string

A LED circuit with a sequence function includes a load component, a capacitive component, a current load, and a voltage processor. The load component provides a resistance value. The capacitive component is connected to the load component in series at anode. The capacitive component provides a capacitance value, and generates an inner voltage at the node. The current load is connected in parallel to the load component and the capacitive component to provide a current path. The voltage processor receives the inner voltage and a threshold voltage, and compares the inner voltage with the threshold voltage to generate a comparison signal. The LED circuit counts time to acquire a time value from a starting time when the voltage processor starts to generate the comparison signal to a time when a level of the comparison signal changes, and uses the time value for sequencing.
Owner:SEMISILICON TECH

High frequency resistant nuisance tripping GFCI and with self-test and end of life (STEOL) circuits

A high-frequency resistant ground fault circuit interrupter (HF-GFCI) with self-test and end-of-life detection is disclosed. The invention incorporates a noise-resistant fault detection circuit, an auto-test module, and an end-of-life shutdown mechanism to ensure reliable protection. The device minimizes false tripping due to high-frequency noise and enhances safety through continuous self-monitoring. Experimental validation confirms improved immunity to leakage currents and transient voltage disturbances. The HF-GFCI also provides an LED circuit having dual functionality: an LED indicator circuit and neutral to ground detection on the load side of the HF-GFCI.
Owner:TOWER MFG CORP

Beam splitter bracket, optical unit and high and low beam module thereof

A high and low beam module comprises a lens, a lens support and an optical unit, the lens is arranged at the front end of the lens support and fixed to the optical unit through the lens support, the optical unit comprises a radiator, an LED circuit board, a condenser, a beam splitter and a beam splitter support, and the beam splitter is arranged on the beam splitter support. The LED circuit board and the condenser are respectively fixed on the radiator through the beam splitter bracket; the light splitting piece support is provided with a supporting table, a first abutting pressing foot, a second abutting pressing foot and a fixing hole, the supporting table is used for installing the light splitting piece, the first abutting pressing foot is used for fixing the LED circuit board to the radiator, the second abutting pressing foot is used for fixing the condenser to the radiator, and the fixing hole is used for fixing the light splitting piece support to the radiator; according to the utility model, the beam splitter, the condenser and the LED circuit board are simultaneously fixed on the radiator through the beam splitter bracket, so that the accuracy problem caused by multiple installation of a plurality of parts is avoided, and the problems in the prior art can be effectively solved.
Owner:FAWAY HAINUO AUTOMOTIVE TECH (CHANGZHOU) CO LTD

Method and system for optimizing precise baking process of mini LED circuit board

The invention provides a precise baking process optimization method and system for a mini LED circuit board, a baking oven is divided into a preheating area, a main baking area and a cooling area, a double-circulation hot air system and top vertical airflow are adopted, infrared and digital humidity sensors are combined, independent temperature and humidity regulation and control are realized, nitrogen-argon mixed gas is injected, and opening and closing of injection holes are adjusted based on the thickness of a substrate, so that the precise baking process of the mini LED circuit board is realized. Maintaining positive pressure and oxygen content in the box based on a three-dimensional pressure sensor network, prolonging heating time according to environment humidity in a preheating stage, performing gradient control on a heating rate, constructing a humidity-moisture absorption rate mapping table and a three-layer neural network model, adjusting power output in combination with Z-axis temperature difference, and adopting forced air cooling and nitrogen sealing procedures in a cooling area; and a plate explosion prediction model is established, a historical data triggering parameter adjustment mechanism is combined, baking parameters are written into the two-dimensional code of the substrate through a block chain technology, and traceability of the whole process is realized.
Owner:JIANGXI XIANGYI DINGSHENG TECH CO LTD

Leakage protection circuit

The utility model, which relates to the technical field of the LED, discloses a leakage protection circuit comprising a power supply circuit, a step-down circuit, an LED circuit and a detection circuit. The input end of the power supply circuit is connected to the output pin of the power supply end, the output end of the power supply circuit is connected with the input end of the step-down circuit and the input end of the LED circuit, and the power supply circuit is used for rectifying the output power supply of the power supply end so as to output the power supply to the step-down circuit and the LED circuit; the output end of the step-down circuit is connected with the detection circuit, and the step-down circuit is used for carrying out step-down processing on the power supply output by the power circuit to output reference voltage to the detection circuit; and the detection circuit is respectively connected with the output pins of the power supply end and the LED circuit, and is used for controlling the working state of the LED circuit according to the real-time voltage difference and the real-time voltage between the output pins of the power supply end and the reference voltage output by the step-down circuit. According to the utility model, the working state of the LED circuit can be controlled according to the real-time voltage difference, the real-time voltage and the reference voltage, thereby realizing anti-creeping protection.
Owner:FOSHAN ELECTRICAL & LIGHTING

Coating method for anti-static coating of LED circuit board

The invention discloses a coating method of an anti-static coating of an LED circuit board, which comprises the following steps of: acquiring environment temperature and humidity, substrate surface temperature, roughness and main process parameters of spraying equipment in real time through a multi-source sensor, performing multi-stage denoising, drift correction and normalization processing on acquired data, and inputting the data into a pre-trained hydrodynamic prediction model; dynamically predicting the thickness distribution of the coating; by combining model prediction with target thickness comparison, parameter correction is calculated, the spraying pressure, the nozzle moving speed and the coating flow are automatically adjusted, and closed-loop control of the spraying process is achieved; meanwhile, thermal field control is reversely optimized in the curing process according to thickness distribution, multi-section temperature self-adaptive adjustment is achieved, the coating uniformity, automation and stability are remarkably improved, the online self-adaptive and anomaly detection capacity is achieved, and manual intervention and the defective product rate are effectively reduced.
Owner:梅州智科电路板有限公司

LED warning lamp with acousto-optic synchronous warning function

The utility model relates to the technical field of warning lamps, and discloses an LED warning lamp with an acousto-optic synchronous warning function, which comprises an outer sleeve, an LED circuit board is mounted at the upper end of the outer sleeve in a sleeving manner, a propagation hole is formed outside the outer sleeve, a bottom plate is mounted at the lower end of the outer sleeve in a matched manner, and a vertical column is fixedly connected to the middle of the bottom plate. The stand column is sleeved with a rotating seat, and the middle of the rotating seat is fixedly connected with a sound wave conduction sleeve. According to the LED warning lamp with the acousto-optic synchronous warning function, a motor is started, the motor drives a rotating seat to rotate, the rotating seat drives a sound wave conduction sleeve to rotate on the inner side of an outer sleeve, namely, after a scraper blade gives an alarm, the alarm can be conducted in different directions, and the warning effect of a sound wave warning device is improved; the sound wave conduction sleeve drives the scraping plate to scrape the inner side of the outer sleeve, and then the cleanliness of the interior of the outer sleeve is improved in the process that the scraping plate is driven to give an alarm.
Owner:NINGBO YINZHOU AUTO PARTS

Removable LED modules with regional intensity control

The present invention provides an LED module and a luminaire. The luminaire includes a controller and an optical system, the optical system having an adjustable optical element and an LED module, and an LED circuit board electrically connected to the controller. The LED circuit board includes an LED array arranged in two or more concentric zones, each zone including a plurality of LEDs. The intensity of the LEDs in the first zone is controlled independently of the LEDs in the second zone. The controller controls the intensity of at least the first zone based on the configuration of the adjustable optical element. The LED module can be removed from the luminaire by electrically disconnecting the LED circuit board from the controller and mechanically disconnecting the LED module from the luminaire without removing other elements of the optical system.
Owner:ROBE LIGHTING SRO

Multi-light-guide integrated side steering lamp

The utility model discloses a multi-light-guide integrated side steering lamp which is better in sealing performance and stability. According to the technical scheme, the LED lamp comprises a long-strip-shaped lamp holder and a lens arranged at the upper end of the lamp holder, a circuit board installation cavity is integrally formed in the end of the lamp holder, an LED lamp circuit board is arranged in the circuit board installation cavity, a light guide strip is integrally formed at the bottom of the lens, a first light-emitting strip and a second light-emitting strip are integrally formed on the upper end face of the lens, and the first light-emitting strip and the second light-emitting strip are arranged on the lamp holder. A pin terminal seat is arranged on the LED lamp circuit board, two pin terminals connected with the LED lamp circuit board are arranged on the pin terminal seat, a slot is formed in the inner side of the end part of the lamp holder, and a jack communicated with the slot is formed in the outer side of the end part of the lamp holder.
Owner:YUEQING BOSHENG AUTO PARTS MFG

A large-size thin plate mini LED circuit board anti-soldering processing method

The application discloses a large-size thin-plate mini LED circuit board anti-soldering processing method, which comprises the following steps: adjusting the distance of the clamp according to the specification of the circuit board, clamping the circuit board by the clamp, and supporting the circuit board by contacting the needle tip of the silk screen top pin with the substrate area of the circuit board; conveying the circuit board to the lower side of the alignment mechanism by the conveying runway; grabbing the circuit board by the mechanical hand and stretching the circuit board to make the circuit board flat and free of bending; performing alignment on the mark point on the circuit board by the CCD alignment device of the alignment mechanism; conveying the circuit board to the silk screen platform by the conveying runway after alignment; loosening the circuit board by the clamp; adjusting the distance between the two ends of the clamp to be greater than the length of the circuit board by the distance adjusting device; driving the track to move downward by the jacking device; and driving the conveying runway to return by the driving device. The large-size thin-plate mini LED circuit board anti-soldering processing method provided by the application solves the problems of the failure of the CCD to align, the smearing of the ink, the deviation, the bruising of the circuit by the nail bed and the like, improves the production efficiency, and guarantees the product quality.
Owner:JIANG XI XU SHENG DIAN ZI GU FEN YOU XIAN GONG SI

Preparation method and jig of white-light Mini-LED lamp panel

The invention provides a preparation method of a white light Mini-LED lamp panel and a jig, and the preparation method of the white light Mini-LED lamp panel comprises the steps that box dam glue is injected into a glue groove in a bearing platform of the jig, the glue groove is in a grid shape which is communicated with one another, the bearing platform is further provided with a plurality of lamp bead containing grooves, and the lamp bead containing grooves are communicated with the box dam glue. A lamp bead accommodating groove is formed in each grid of the colloid groove; pre-curing the box dam glue; a white light Mini-LED circuit board is arranged on the bearing platform of the jig, a plurality of white light Mini-LED lamp beads fixed to the white light Mini-LED circuit board are correspondingly arranged in the lamp bead containing grooves, and the thickness of the white light Mini-LED lamp beads is smaller than the depth of the colloid groove; enabling the white light Mini-LED circuit board to be in contact with the box dam glue; according to the preparation method of the white light Mini-LED lamp panel, provided by the invention, the prepared box dam glue has relatively large thickness under the condition of relatively narrow width, so that the problems of strip-shaped shadow and light crosstalk of the white light Mini-LED lamp panel are solved.
Owner:HGC (WUHAN) TECH CO LTD

Connecting structure and method for voltage drop charging of flexible lamp strip

The invention relates to the technical field of LED lamp strip processing, in particular to a connecting structure and method for voltage drop electricity compensation of a flexible lamp strip, and the connecting structure for voltage drop electricity compensation of the flexible lamp strip comprises an LED circuit board, a core wire and wiring terminals arranged at the two ends of the lamp strip; the core wire is coated on the LED circuit board, and a lead is arranged in the core wire; connecting flat cables are welded to the two ends of the LED circuit board. The wiring terminals are located at the two ends of the lamp strip, and the wire and the connecting flat cable are connected and fixed through the wiring terminals. A flat cable welding and automatic injection molding integrated process is adopted, and traditional manual welding, hook knife skin breaking and winding operation are replaced. The whole process is simple, convenient and rapid, the time for wiring and parallel connection is greatly reduced, the dependence on the personal technical proficiency of workers is reduced, the consistency of product quality is ensured, and the production cost is effectively reduced.
Owner:NINGBO YUSING OPTOELECTRONIC TECH CO LTD

Silica gel lamp strip

The utility model discloses a silica gel lamp band which comprises a silica gel shell, an LED circuit board is installed at the bottom of an inner cavity of the silica gel shell, a plurality of LED lamp beads are arranged on the upper side of the LED circuit board in the length direction of the LED circuit board, the LED circuit board is electrically connected with the LED lamp beads, light scattering silica gel is bonded to the upper end of the silica gel shell, and the light scattering silica gel is arranged on the silica gel shell. The lower side of the light-diffusing silica gel is provided with arc-shaped silica gel, the arc-shaped silica gel protrudes towards the side away from the LED lamp beads, the silica gel shell is made of opaque silica gel materials, light emitted by the LED lamp beads is diffused to the outside through the light-diffusing silica gel, the left side and the right side of the upper end of the silica gel shell are each provided with a groove, and the lower side of the light-diffusing silica gel is provided with an inserting strip. The inserting strip is inserted into the groove, the silica gel shell is made of non-transparent silica gel materials, light emitted by the LED lamp beads is emitted outwards through the light scattering silica gel, the light emitting brightness and the light gathering performance are improved, and meanwhile the diffusion effect of lamplight is improved through cooperation of the arc-shaped silica gel and the light scattering silica gel.
Owner:GUANGDONG ENSTAR NEW MATERIALS CO LTD

Flexible LED circuit board capable of being folded and unfolded

The flexible LED circuit board comprises a flexible base material layer and a conductive layer, the conductive layer is embedded in the middle of the flexible base material layer, a plurality of open slots are formed in the upper end face of the flexible base material layer at equal intervals, and bonding pads on the conductive layer are exposed through the open slots; the multiple LED lamp beads are welded to the bonding pad, the two sides of each LED lamp bead are positioned and clamped through the structure of the flexible base material layer, and when the folding angle is too large, the LED lamp beads and the flexible base material layer are automatically separated to release stress; the flexible base material layer forms an elastic stretching section at the position of the opening groove, the conductive layer forms an arc-shaped conceding section at the corresponding position, and the structure can absorb extrusion deformation and prevent breakage when bent. According to the invention, the foldability and durability of the circuit board are improved, the self-adaptive protection and maintainability of the lamp beads are realized, and the circuit board is suitable for the fields of foldable display and flexible illumination.
Owner:CENTURY CHINA FOREST TCEHNOLOGY CO LTD

Multi-partition multi-angle dome light source

The utility model discloses a multi-partition multi-angle dome light source which comprises a dome lampshade, a bottom plate, a diffusion plate and a plurality of soft LED circuit boards. The dome lampshade is fixedly connected to one side of the bottom plate, a hemispherical inner wall is formed on the inner side of the dome lampshade, the soft LED circuit boards are arranged on the hemispherical inner wall in a tightly attached mode, so that the soft LED circuit boards form different irradiation angles, a plurality of sets of working areas working independently are arranged on each soft LED circuit board, and the working areas are arranged in the working areas. Each working area is provided with an independent cable which is externally connected with a connecting terminal; lED lamp beads which are uniformly distributed are arranged on each working area; a hemispherical diffusion part matched with the hemispherical inner wall in shape is formed on the diffusion plate, and the diffusion plate is fixedly connected to the other side of the bottom plate, so that the hemispherical diffusion part is arranged in the hemispherical inner wall and covers the LED lamp beads. According to the utility model, partitioned illumination can be realized, and the brightness utilization rate is higher than that of conventional dome light.
Owner:东莞康视达自动化科技有限公司

A lamp color adjusting circuit with a silicon-controlled light adjusting module

The application relates to the technical field of LED circuit, in particular to a lamp color adjusting circuit with a thyristor light modulation module, which comprises a rectifier circuit, a multi-grade dial code color adjusting circuit, a frequency flash removing circuit, a thyristor current discharge circuit and a constant current light modulation circuit. The rectifier circuit converts an alternating current power supply into a direct current voltage to supply power to a circuit system. The multi-grade dial code color adjusting circuit adjusts the current distribution of LED lamp beads through a dial code switch and a second group of resistors, generates a color adjusting signal, carries out low-pass filtering and dynamic compensation on the color adjusting signal, and outputs a pure control signal to the thyristor current discharge circuit. The thyristor current discharge circuit adjusts a current path according to the control signal to provide a smooth and adaptive power supply for the constant current light modulation circuit. The constant current light modulation circuit realizes constant current output. The design significantly reduces the hardware cost and the complexity of the circuit system, effectively suppresses electromagnetic interference in combination with the low-frequency modulation characteristics of the thyristor, and realizes the balance between light modulation precision and the stability of the circuit system.
Owner:DONGGUAN DERUN INTELLIGENT TECH CO LTD

Production temperature control system and method of MiniLED circuit board

The invention discloses a production temperature control system and method for a Mini LED circuit board. The method comprises the steps that appearance pictures of circuit boards located at a plurality of preset baking positions are collected according to a preset frequency; a humidity display card is arranged on the circuit board at each preset baking position; confirming feature data based on the appearance picture of the circuit board; determining the water content of the circuit board based on the characteristic data of the circuit board, and drawing a water content change curve of the circuit board; whether the current drying temperature is qualified or not is determined based on the water content change curves of the circuit boards at the preset baking positions; if not, determining a temperature adjusting scheme based on a plurality of water content change curves; the temperature adjustment scheme comprises an adjustment speed and a target temperature; and based on the temperature adjusting scheme, the drying temperature is adjusted to the target temperature. The technical problem of unstable baking quality of the circuit board in the prior art is solved.
Owner:JIANGXI WELGAO ELECTRONICS CO LTD

Method and device for evaluating life of toner cartridge based on state monitoring, equipment and medium

The present application relates to the technical field of LED control circuit board manufacturing, solves the problem that the host computer cannot accurately learn the actual health status of the selenium drum in the prior art, which leads to inaccurate evaluation of the service life of the selenium drum and affects the reliability of the LED circuit control board, and provides a selenium drum service life evaluation method, device, equipment and medium based on state monitoring. The method comprises the following steps: obtaining the reference corresponding relationship between the printing data and the consumption of the selenium drum by performing test printing; monitoring the selenium drum to obtain actual state data; obtaining the actual corresponding relationship between the printing data and the consumption of the selenium drum; obtaining the consumption deviation value according to the reference corresponding relationship and the actual corresponding relationship; and evaluating according to the consumption deviation value and the actual state data to obtain a service life evaluation result. The present application comprehensively evaluates the service life of the selenium drum based on the consumption deviation and the actual state, thereby effectively improving the accuracy and real-time performance of the service life evaluation.
Owner:HUIZHOU CJC IND CO LTD +2

A mini LED circuit board that can be quickly and stably connected

The utility model discloses a kind of mini LED circuit board of quick stable butt joint, including circuit board, protective edge, shell, limiting structure and plug block, the rear end of plug block is fixed with circuit board, shell is set on circuit board, shell is set with insulating material, the side end of shell is fixedly connected with protective edge, the side end of protective edge is fixedly provided with limiting structure;Limiting structure is used to butt joint fixed, fixed block in limiting structure, link block are supported, and link block, guide frame, spring are used for the elastic connection of sleeve rod, sleeve rod is rotatably arranged card frame, and it is fixed by card frame and circuit board, plug block adaptive card seat are fixed.The utility model discloses a kind of mini LED circuit board of quick stable butt joint, by the setting of structure, the purpose of quick stable butt joint is realized.
Owner:JIANGSU WEIGE ELECTRONIC TECHNOLOGY CO LTD

LED circuit board with independent heat exchange module

The utility model relates to the technical field of LED circuit boards, and discloses an independent heat exchange module LED circuit board, which comprises a circuit board main body and a connecting frame, a rotating seat is fixedly connected onto the connecting frame, a rotating plate is rotatably connected onto the rotating seat, two connecting plates are fixedly connected onto the rotating plate, one end of a first spring is fixedly connected onto each connecting plate, and the other end of the first spring is fixedly connected onto the connecting frame. The other end of the first spring is fixedly connected with a fixing disc, the fixing disc is fixedly connected with a limiting rod, the connecting plate is provided with a limiting opening and a sliding opening, the sliding opening is fixedly connected with one end of a second spring, and the other end of the second spring is fixedly connected with a pushing block. A limiting plate is fixedly connected to the pushing block, and a limiting hole is formed in the limiting plate. Heat conduction is performed on the circuit board main body through the heat conduction plate, heat dissipation is performed on the heat conduction plate through the heat dissipation plate, and the limiting rods are tightly connected with the limiting holes, so that quick connection and disassembly of the connecting frame and the circuit board main body are guaranteed.
Owner:JINGDEZHEN HONGYI ELECTRONICS TECH CO LTD

LED circuit board slitting apparatus and method of use

The application discloses an LED circuit board strip cutting device and a use method thereof, and particularly relates to the technical field of LED lamp production equipment. The LED circuit board strips cut on both sides are positioned by limiting pressing blocks. In the initial state, the upper and lower collecting frames are located below the end of the feeding belt, and the middle LED circuit board strips lack limitation. When the transfer frame reaches the end of the feeding belt and continues to rotate, the LED circuit board strips lacking positioning limitation and having a wide width fall into the upper collecting frame. When the LED circuit board strips having positioning limitation and having a short width reach the position of the lower collecting frame, the two limiting pressing blocks are opened, the LED circuit board strips having a short width are collected by the lower collecting frame, and the collection of LED circuit board strips with two different widths is realized. The upper collecting frame slides out of the material belt I for discharging, and the lower collecting frame slides out of the material belt II for discharging. The corresponding collecting frame is driven to rotate by a rotating motor, so that the LED circuit board strips in the collecting frame can be conveniently poured out.
Owner:广西维合丰光电科技有限公司

Driving circuit board with good heat dissipation effect

The utility model discloses a drive circuit board with a good heat dissipation effect, which relates to the technical field of LED circuit boards, and is characterized in that the drive circuit board comprises a metal substrate and a plurality of LED lamp beads, the top surface of the metal substrate is sequentially provided with an insulating layer, a circuit layer and a heat conduction enhancement layer, the heat conduction enhancement layer covers the circuit layer and forms a welding connection part, and the LED lamp beads are arranged on the metal substrate. A plurality of heat conduction plates are arranged on the insulating layer, and the LED lamp beads are located on the heat conduction plates and connected with the two adjacent welding connecting parts. According to the high-power LED module, through the collaborative design of the metal substrate, the heat conduction enhancement layer and the first honeycomb-shaped heat dissipation holes and the cooperation of the heat dissipation fins, convection heat dissipation is enhanced, the heat dissipation bottleneck of the high-power LED module is solved, the structure does not need to be externally connected with a radiator, and the high-power LED module has the advantages of being low in cost, long in service life and wide in application range.
Owner:KUNSHAN JIEHONG PHOTOVOLTAIC TECH CO LTD

Cigarette end insertion type heating non-combustion smoking set

The cigarette end insertion type heating non-combustion smoking set comprises a tubular shell, a heating pipe is arranged on the middle front section in the shell, a pipe frame is arranged on the middle rear section in the shell, an annular cavity is formed between the pipe frame and the shell, and an electric control module and a battery are arranged in the cavity; the shell is provided with a switch, a charging assembly at the front end and a light prompting assembly at the rear end; a heat insulation assembly composed of a first heat insulation sheet, a second heat insulation sheet and a vacuum tube is arranged on the periphery of the heating tube. A detection module is arranged in the shell and is fixed through a bracket formed by inserting a pipe I and a supporting outer pipe; the charging assembly comprises a supporting inner pipe, a supporting outer pipe and other structures. The light prompt assembly comprises an annular LED circuit board, a light guide ring support and the like. And a detachable ring is arranged at the rear end of the shell. According to the smoking set, by optimizing the structure, the heat insulation performance, the detection precision, the charging stability and the light prompt definition are improved, the smoking set is convenient to carry, and the user experience is improved.
Owner:MAIJI INTELLIGENT MEDICAL TECHNOLOGY (SUZHOU) CO LTD

Method and device for conveniently searching wireless pedal controller

The invention discloses a method and device for conveniently searching a wireless pedal controller. The method comprises the steps that a host is awakened through a voice instruction; after the host identifies the voice instruction, a searching instruction is sent to the wireless pedal controller through the wireless communication module; the wireless pedal controller receives the searching instruction and awakens a main control circuit of the wireless pedal controller; and the main control circuit controls the LED power supply circuit to supply power to the LED circuit and controls the LED to be lightened or flicker to prompt the position. The device comprises a host and a wireless pedal controller, the host comprises a main control module, a voice recognition module and a wireless communication module, and the wireless pedal controller comprises a wireless communication module, a main control circuit, an LED power supply circuit and an LED circuit. The LED power supply circuit adopts an N-MOS tube to control on-off of power supply, and the power supply is switched off during dormancy so as to reduce power consumption. The problem that the wireless pedal controller is difficult to quickly position in the operation environment is solved, a doctor is helped to quickly find the pedal controller under an operation table through voice wake-up and LED visual prompt, and the operation efficiency is improved.
Owner:SHENZHEN LONG TERM HEALTH TECH CO LTD

Driving circuit and LED circuit

The utility model provides a driving circuit and an LED circuit, and relates to the technical field of driving circuits. In the driving circuit, a first output end of a voltage comparison circuit is connected with a booster circuit, and a second output end of the voltage comparison circuit is connected with a step-down circuit; the output end of the booster circuit and the output end of the step-down circuit are connected with the same load to be powered; a voltage dividing end and an input end of the voltage dividing circuit are respectively connected with the voltage comparison circuit, and the voltage dividing circuit is used for outputting divided voltage of external voltage of the input end through the voltage dividing end; the voltage comparison circuit is used for transmitting the external voltage of the input end to the boost circuit through the first output end when the voltage of the divided voltage is lower than the reference voltage, and transmitting the external voltage of the input end to the buck circuit through the second output end when the voltage of the divided voltage is larger than or equal to the reference voltage. According to the embodiment of the invention, the interference of external voltage change on the load can be reduced, the normal work of equipment is effectively ensured, and the safety and stability of the equipment are improved.
Owner:GUANGZHOU SHENGHE ELECTRONICS CO LTD

High-order fine line circuit board, manufacturing method thereof and mold manufacturing method

The invention provides a high-order fine-line circuit board, a manufacturing method thereof and a mold manufacturing method. The mold manufacturing method comprises the following steps: determining a first region and a second region in the high-order fine-line circuit board; obtaining a first processing pattern and a second processing pattern, wherein the line spacing and the bonding pad spacing in the first processing pattern are greater than the line spacing and the bonding pad spacing in the second processing pattern; and according to the first processing pattern and the second processing pattern, the first etching area and the second etching area are cut by using laser, so that a first etching hole is formed in the first etching area on the preset mold, and a second etching hole is formed in the second etching area on the preset mold. According to the circuit board and the manufacturing method of the circuit board, the etching holes with different hole diameters are machined in the preset die through the laser according to the line spacing and the bonding pad spacing of the different areas of the circuit board, the circuit layer matched with the line spacing and the bonding pad spacing of the Micro-LED is etched on the circuit board, the production efficiency of the Micro-LED circuit board is improved, and the production cost is reduced.
Owner:SHENZHEN HUAXUN MICROELECTRONIC MATERIALS CO LTD

LED circuits and assemblies

An LED lighting device is disclosed. The LED lighting device includes a first LED circuit and at least one additional LED circuit. The first LED circuit and the at least one additional LED circuit each include LEDs connected in series. The LEDs in the first LED circuit emit a different color of light than the LEDs in the at least one additional LED circuit. The LED lighting device also includes a switch configured to be actuated by an end user and provide the end user with a means to produce a change in brightness of at least one of the first LED circuit or the at least one additional LED circuit, and switch at least one of the first LED circuit and the at least one additional LED circuit on or off.
Owner:LYNK LABS INC

Small-size LED circuit board

The utility model relates to the field of LED circuit boards, and discloses a small-size LED circuit board which comprises a mounting bottom plate, an LED circuit board body is arranged on the top surface of the mounting bottom plate, a buffer mechanism is arranged between the mounting bottom plate and the LED circuit board body, and the buffer mechanism comprises a fixing hole, a positioning mounting column, a buffer support and a fastening nut. A plurality of fixing holes are formed in the positions, close to the corners, of the top face of the LED circuit board body, a plurality of positioning installation columns corresponding to the fixing holes are fixedly installed at the positions, close to the corners, of the top face of the installation bottom plate, and a worker firstly penetrates through the installation holes through bolts to integrally fix the installation bottom plate and the LED circuit board body into an equipment shell; once equipment vibrates, the mounting bottom plate can drive the positioning mounting columns and the buffer support to move upwards, and the buffer support can give full play to the buffer characteristic when making contact with the bottom of the LED circuit board body, so that the risk that components are damaged due to rigid collision between the LED circuit board body and the shell or the mounting bottom plate can be reduced.
Owner:MEIZHOU KEDINGSHENG TECH CO LTD

Automobile lamp thick-wall light guide structure, automobile lamp and automobile

The invention belongs to the technical field of automobile lamps, and discloses an automobile lamp thick-wall light guide structure, an automobile lamp and an automobile, the automobile lamp thick-wall light guide structure comprises an LED light source, an LED circuit board and a thick-wall light guide, the LED light source is fixedly connected to the LED circuit board, the thick-wall light guide is fixedly connected to the LED circuit board, and the thick-wall light guide comprises a condenser, a reflecting surface, a light guide upper side surface, a light guide lower side surface and a light emitting surface; the light condenser is arranged below the thick-wall light guide and located over the LED light source, the reflecting face and the light-emitting face are obliquely arranged on the two sides of the thick-wall light guide respectively, the reflecting face and the light-emitting face form a splayed structure when viewed from the side, and the light guide upper side face and the light guide lower side face are the upper inner surface and the lower inner surface of the thick-wall light guide respectively. And optical patterns are arranged on the light guide upper side surface and the light guide lower side surface. The optical patterns are arranged on the upper side face and the lower side face of the thick-wall light guide, the light path direction is changed, bright spots are prevented from being formed, the requirement for lighting uniformity of the vehicle lamp is met, cost is not increased, and application is wide.
Owner:CHINA FAW CO LTD