362 results about "LED circuit" patented technology

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.

An LED drone light of high power and very light weight has an LED circuit board cooled by a foamed metal matrix of copper or aluminum. Preferably bonded to a disc or puck which is thermally bonded to the back of the PCB, the foamed metal matrix can be cooled by a small fan attached to the light's housing.

The invention relates to the technical field of LED lamp assembling, and discloses modular LED lamp multi-station parallel assembling equipment and an assembling method.The modular LED lamp multi-station parallel assembling equipment comprises a base, and a lamp bead assembling station and a plug-in station are arranged at the top of the base; the top of the base is provided with assembling mechanical arms corresponding to the lamp bead assembling station and the plug-in station, and a supporting table is fixedly arranged at the position, between the lamp bead assembling station and the plug-in station, of the top of the base. And the rotating seat is driven by external force to be rotationally arranged at the top of the supporting table, overturning plates are rotationally arranged on the two sides of the rotating seat correspondingly, and annular sleeves are fixedly arranged on the inner sides of the overturning plates correspondingly. According to the modularized LED lamp multi-station parallel assembling equipment and the assembling method thereof, the problems that in the prior art, during multi-station parallel assembling, a continuously conveyed LED circuit board is not convenient to turn over, and then lamp beads and other electronic elements are not convenient to assemble on the two sides of the LED circuit board can be effectively solved.

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.

The utility model discloses an LED line detection device, which comprises a detection jig, an alignment mechanism, an FPC (Flexible Printed Circuit) flat cable, an adapter plate and an upper computer, the detection tool is provided with a probe, and the other end of the probe is connected with an LED detection lamp. The detection jig is aligned with a welding spot of an LED circuit through the alignment mechanism, the probe is pricked to a corresponding electrode of the LED circuit, a wire outlet area of the LED circuit is matched with the FPC flat cable, the adapter plate is connected with an upper computer to provide a power supply, then the probe is connected with the welding spot of the LED circuit, and the circuit state can be judged according to the LED detection lamp. In addition, other positions of the LED circuit can be detected by moving the position of the detection jig, so that the detection of the whole large LED circuit is completed. According to the utility model, the circuit can be detected in the circuit manufacturing process, so that the control of product quality is completed in the manufacturing stage, and large loss caused by poor functionality of the circuit which can only be found after welding of all LEDs is completed is avoided.

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.

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.

The invention relates to a method (100) for optically contacting a printed circuit board (200), comprising: providing (110) a printed circuit board (200) with at least one first optically conductive printed circuit board layer (210; 210') for conducting optical signals and at least one first opening, wherein the first opening extends through the printed circuit board (200) to at least the first printed circuit board layer (210; 210'); providing (120) a connecting piece (300) for conducting the optical signals with a first section and a second section, wherein the first section is configured for optically contacting the first printed circuit board layer (210; 210') and the second section is configured for optically contacting a unit (200') for communicating the optical signals; inserting (130) the first section into the first opening such that the first section is connected to the first printed circuit board layer (210;210') is optically contacted and the second section extends away from the circuit board (200).

A lighting device is disclosed. The example lighting device includes a printed circuit board. First and second LED circuits and respective first and second driver circuit are mounted on the printed circuit board. The first LED circuit is configured to emit a first color temperature of white light when receiving power from the first driver circuit and the second LED circuit is configured to emit a second color temperature of white light when receiving the power from the second driver circuit. The second color temperature of white light emitted from the second LED circuit is different than the first color temperature of white light emitted from the first LED 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.

The utility model provides an LED circuit board heat dissipation structure, which relates to the technical field of LED circuit board heat dissipation, and comprises a circuit board, a lamp bead is embedded on the circuit board, a protective tube is arranged on one side of the lamp bead, heat generated at the bottom of the lamp bead is transferred to a heat conduction column through a silicone grease layer, and the heat conduction column is used for heat dissipation of the LED circuit board. Heat is evenly transmitted to the heat conduction plate, heat absorbed on the protection plate is dissipated under the action of the first heat dissipation fins and the second fins, and due to the crossed design of the second fins and the first heat dissipation fins, air flowing paths between the fins can be increased through the fins which are arranged in a crossed mode, the convection effect is enhanced, and the heat dissipation effect is improved. The arrangement mode is suitable for a condition with a compact space or a relatively high control requirement on a flowing path, and the heat dissipation surface area and the heat transfer efficiency can be maximized in a limited space, so that the heat dissipation effect of the circuit board is improved.

The utility model discloses an indicating lamp light guide structure suitable for an atmosphere lamp, which belongs to the technical field of lamps and comprises a base shell, and a light guide main body and an LED circuit board are reasonably arranged on the base shell, so that light rays emitted by LED lamp beads are guided out through reflection and are soft and not dazzling; meanwhile, the plurality of light guide units are combined into the light guide main body, and the LED circuit board is buckled and fixed by the light guide main body through the fasteners, so that the light guide main body, the LED circuit board and the base shell are firmly connected and are not easy to shake, and the light guide stability of the LED light source is improved; besides, the multiple shading rib plates are arranged on the base shell, the adjacent LED lamp beads are isolated from one another, the light channeling condition is effectively prevented, and mutual interference between the LED lamp beads is avoided.

The invention relates to a flexible wearable electrocardio sensor and a preparation method thereof. The preparation method comprises the following steps: providing a flexible substrate; a circuit printing process is adopted on the first surface of the flexible substrate, electrodes are correspondingly formed at the preset positions of the electrodes, conductive connection points are formed at the preset butt joint positions, and conductive circuits used for connecting the electrodes and the conductive connection points are formed, so that electrocardiosignals collected by the electrodes are transmitted to the conductive connection points through the conductive circuits; wherein the conductive connection points are used for connecting a signal acquisition device. Therefore, the lead circuit and the electrode can be integrated, the flexible wearable electrocardio sensor which is simple in structure and obtained through the preparation method can collect electrocardio signals, and therefore the wearable electrocardio sensor can be light and thin and is beneficial to wearing.

The invention discloses a manufacturing method of a packaging substrate of an LED electronic display screen, and relates to the technical field of LED circuit board processing. Through integration of a material demand plan MRP system and CNC cutting equipment and utilization of an intelligent typesetting algorithm based on a genetic algorithm, the utilization of substrate materials is maximized, and waste is reduced; an intelligent drilling adjustment system is constructed by adopting a depth Q learning algorithm, real-time adjustment and optimization of drilling parameters are realized, and the hole position precision and the hole shape consistency are ensured; in the intelligent plating process, electroplating parameters are monitored and adjusted in real time by utilizing a neural network model based on deep learning, the uniformity and adhesive force of an electroplated layer are improved, and finally, an automatic plate grinding machine is adopted for resin grinding in the press-fit brownification and resin grinding stages, so that the flatness of the surface of a substrate is ensured.

The invention relates to the field of flexible sensing, and discloses a proximity sense and visual tactile sense dual-mode flexible sensor and a preparation method thereof, the proximity sense and visual tactile sense dual-mode flexible sensor comprises a capacitance-visual tactile sense dual-mode flexible sensor, the capacitance-visual tactile sense dual-mode flexible sensor comprises a flexible capacitive proximity sense sensor and a visual tactile sensor, the flexible capacitive proximity sensor comprises a flexible upper electrode, a flexible dielectric layer and a flexible electrode array lower electrode plate. The visual tactile sensor comprises a protective layer, a visual tactile sensing layer, a PDMS supporting body, an acrylic lens, a sensor shell, an LED circuit board, a camera module and a sensor base. Sensors with two different sensing mechanisms are integrally prepared to construct a proximity sense-visual tactile sense dual-mode flexible sensor, so that a multi-mode information fusion sensing effect of proximity sensing and high-resolution tactile sensing is realized, the sensing range of the visual tactile sensor is widened, and the visual tactile sensor is endowed with spatial sensing capability.

The invention, 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 between the output pins of the power supply end and the reference voltage output by the step-down circuit. According to the invention, the working state of the LED circuit can be controlled according to the real-time voltage difference and the reference voltage, so that anti-creeping protection is realized.

An LED lighting device is disclosed. The example LED lighting device includes a first LED circuit having at least two phosphor coated LEDs connected in series and at least one additional LED circuit having at least two phosphor coated LEDs connected in series. The LED lighting device also includes a switch having user selectable positions for providing user control to select DC voltage level options to change a DC voltage level that is delivered to at least one of the first LED circuit or the at least one additional LED circuit. One user selectable position decreases a brightness level individually of the first LED circuit and the at least one additional LED circuit. Another user selectable position individually disconnects the first LED circuit and the at least one additional LED circuit from a mains power source.

The utility model provides an LED circuit board fixing device, which relates to the technical field of electronic processing and production and comprises a base, a fixing assembly is arranged on the base, a clamping assembly is arranged at one end, far away from the base, of the fixing assembly, and a supporting assembly is arranged at one end, close to the base, of the fixing assembly. The fixing assembly comprises supporting rods and a fixing block, the supporting rods are arranged on the two sides of the top of the base, limiting plates are fixedly connected to the supporting rods, and the ends, close to the limiting plates, of the supporting rods are sleeved with elastic pieces. According to the design, the LED circuit board can be rapidly installed and fixed, the problem that a buffer structure is lacked between the LED circuit board and the base is solved through the elastic piece, the influence of vibration on the LED circuit board is reduced, the stability of the fixing device is improved, and the service life of the LED circuit board is prolonged. And the service life of the LED circuit board is prolonged.

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.

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.

The utility model relates to a double-layer circuit membrane switch with an LED, which sequentially comprises a panel, a surface key layer, a light guide film layer, a fixing glue layer, a fixing layer, a wire key layer, a lower circuit layer, an LED wire key layer, an LED circuit layer, a bottom glue layer and release paper from top to bottom, an upwards raised elastic sheet is arranged on the lower circuit layer, a key convex hull is arranged on the surface of the panel, and the bottom glue layer is arranged on the surface of the panel. The surface key layer, the fixing glue layer, the fixing layer and the line key layer are respectively provided with a surface key layer hole, a fixing glue layer hole, a fixing layer hole and a line key layer hole; the same vertical positions of the panel, the surface key layer, the light guide film layer, the fixing glue layer, the fixing layer, the line key layer, the lower circuit layer, the LED line key layer, the LED circuit layer, the bottom glue layer and the release paper are all provided with window clearance holes; and an LED lamp is fixed on the LED circuit layer. According to the utility model, the indication function of the LED lamp is realized by using two layers of circuits in a limited space.

The present application provides an LED circuit board and an LED display screen, wherein the LED circuit board includes a substrate and a first solder pad, the first solder pad is arranged on the side of the substrate, a side of the first solder pad away from the substrate is provided with a welding area, a first hole is arranged on the LED circuit board, the first hole is located in the welding area, the first hole penetrates the first solder pad and at least partially extends into the substrate along the thickness direction of the substrate, a first reinforcement layer is arranged on the inner wall of the first hole, and the first reinforcement layer is connected to the first solder pad. The arrangement of the first reinforcement layer can provide forces of different directions to the first solder pad, thereby improving the connection stability between the first solder pad and the substrate; since the first reinforcement layer is connected to the first solder pad, the first reinforcement layer can be regarded as an extension of the first solder pad, and the first solder pad and the first reinforcement layer are inserted into the substrate as a whole like a nail, and even if the edge of the first solder pad is lifted after being hit, the first solder pad is not easy to fall off from the substrate, thereby reducing the difficulty of subsequent repair after the collision.

The utility model relates to an LED circuit for removing an alternating current component, which comprises an LED driving power supply and an LED lamp, a constant voltage filter circuit is arranged between the LED driving power supply and the LED lamp, the constant voltage filter circuit comprises three parallel branches, the first branch comprises R1, D1 and ZD1 are connected in series behind the R1, the second branch comprises R2, the third branch comprises R3, C1 is connected in series behind the R3, and the C1 is connected in series behind the R2. The three branches are connected in parallel and then connected with R4 in series to form a constant-voltage filter circuit; one end of the constant-voltage filter circuit is connected with the V + end of the LED driving power supply, and the V-end of the LED driving power supply is connected to the middle part of the R3 and the C1; source electrodes of a Q1 and a Q2 which are connected in parallel are connected to a V + end of an LED driving power supply, grid electrodes of the Q1 and the Q2 are connected with an R4, drain electrodes of the Q1 and the Q2 are connected with an R6, the R6 is connected to an LED + end, and an LED-end is connected with a V-end of the driving power supply. According to the novel circuit, an inductance element with a large size in a traditional filter circuit is omitted, a control chip element does not need to be used, and the whole circuit is simple in structure and low in manufacturing cost.

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.

The invention relates to a light-emitting device for promoting grass growth, in particular of sports turf, wherein the device comprises at least one LED circuit board and a control / regulating unit having at least three channels. The light-emitting device can be mounted on light support units and be moved over the lawn.

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.

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.

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.

The present invention relates to an LED light strip, characterized in that it comprises: a flat enameled wire and a metal foil strip; the metal foil strip is wound or bonded on the flat enameled wire, a metal core is exposed at an opening in the flat enameled wire, one electrode of the LED is welded to the opening of the enameled wire, and the other electrode is welded to the metal foil strip. The LED light strip is used as a warp and woven into a mesh with conductive filaments, the woven mesh is used as a heat sink for the LED light strip, the intersections of the conductive filaments and the LED light strip are welded, and the intersections between the conductive filaments are welded. The LED light strip and the circuit network with self-formed conductive paths disclosed by the present invention have simple processing technology, no chemical pollution, and much higher heat dissipation performance than existing LED light strips.

The utility model relates to a slitting device, in particular to a plate slitting device of an LED circuit board. According to the board slitting device for the LED circuit board, excess materials adhering to the circuit board can be cut off at the same time, the excess materials and the circuit board can be separated, the excess materials and the circuit board are prevented from being mixed, secondary cleaning is not needed, and the slitting efficiency is improved. The board slitting device for the LED circuit board comprises a base, a cavity, a discharging board, a discharging groove, a shell and the like. A cavity is formed in the base, a discharging plate is welded to the upper portion of the base, a discharging groove is formed in the discharging plate, a shell is fixedly installed on the top of the base, and the discharging plate penetrates through the lower portion of the shell. According to the circuit board cutting device, the circuit board and excess materials adhered to the circuit board are cut off at the same time through the two cutting machines which are arranged in a staggered mode, the cut excess materials and the circuit board are separated through the discharging groove, the excess materials and the circuit board are prevented from being mixed, secondary cleaning is not needed, and the cutting efficiency is improved.