266 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.

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.

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 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 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 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 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.

The utility model relates to the technical field of illumination, in particular to an LED module and an LED circuit, which comprise a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D1, a diode D2, a diode D3, a diode D4 and an LED lamp body. The characteristic of single conduction of a diode is utilized, when an LED module is positively connected to a main line, current passes through a resistor R1 and a resistor R2 in a positive circuit, power output of an LED lamp body is affected by adjusting resistance values of the resistor R1 and the resistor R2, and the purpose of adjusting the power of the positive circuit is achieved; according to the utility model, the current passes through the resistor R3 and the resistor R4 in the reverse circuit, and the resistance values of the resistor R3 and the resistor R4 are adjusted, so that the power output of the LED lamp body is influenced, the purpose of adjusting the power of the reverse circuit is realized, and finally the purpose of realizing two different powers in the same LED module without using point control is achieved.

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.

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.

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.

The utility model discloses a lamp shell for an energy-saving down lamp, which is applied to the field of lamp shells for down lamps and comprises a shell, and the top of the shell is bolted with a first clamping plate; the first clamping plate is mounted at the top of the shell, the second clamping plate is hinged to the first clamping plate, when the LED circuit board is mounted in the shell, a connecting wire on the LED circuit board is led out of the shell through the wiring groove, and the led-out connecting wire is placed between the first clamping plate and the second clamping plate to be clamped, so that the LED circuit board is prevented from being damaged, and the service life of the LED circuit board is prolonged. The LED circuit board is arranged in the shell, the LED circuit board is prevented from being loosened or disengaged due to external dragging, the use stability is guaranteed, a stepped groove is formed in the shell, a limiting sleeve is arranged in the shell, the limiting sleeve is directly clamped in the shell under the action of a limiting buckle block and a limiting groove, and when the light-transmitting plate is placed between the stepped groove and the limiting sleeve, the light-transmitting plate is limited, so that the light-transmitting plate is prevented from falling off, and the service life of the light-transmitting plate is prolonged. And bolts are not needed, so that the mounting and the dismounting are convenient.

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.

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.

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.

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.

1. The name of this design product: the main body of the ceiling lamp. 2. Purpose of the product of this design: The entire product is used as a ceiling lamp, and the protected part is used as the light-guiding part of the ceiling lamp. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the key points of the design: 3D drawing of Design 1. 5. Designate Design 1 as the base design. 6. Other situations that need explanation: Description of the changed status: The areas indicated by the letters in the reference figure are: a: main lighting unit, b: light guide plate, c: light guide plate fixing frame, d: main lighting LED circuit board, e: light diffusion cover, f: light guide plate LED circuit board, g: lighting equipment housing, h: power box. 7. Other situations that require explanation: This design is a partial design. The solid lines in the view represent the protected parts, and the dotted lines represent the unprotected parts.

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.