84results about How to "Good for heat dissipation" patented technology

The application of the invention relates to the technical field of electric-pressure cookers, in particular to an electromagnetic electric-pressure cooker. The electromagnetic electric-pressure cooker comprises a base, a bottom cap, an outer cover and a liner, wherein a power supply box is arranged in the base, an electromagnetic heating plate is arranged betweenthe outer cover and the liner, a fan and a heat sink are arranged in the power supply box, a funnel-shaped air guiding opening is arranged in the power supply box, the fan is arranged above the air guiding opening, and the heat sink is tightly leaned against the fan; the electromagnetic heating plate comprises a coil plate, a magnetism-isolating plate and a sensor assembly, an annular large winding area formed by a plurality of concentrically arranged coil slots is formed in an inner cavity of the coil plate and is divided into a plurality of small winding areas and ventilating slots, the small winding areas and the ventilating slots are arranged alternatively, and the slot bottoms of the ventilating slots are lower than the slot bottoms of the coil slots. Compared with the prior art, the electromagnetic electric-pressure cooker disclosed by the application of the invention has the advantages that the heat dissipation structure of the whole electric-pressure cooker is optimized, the whole heat dissipation performance is reinforced, the structure of the electromagnetic heating plate is simplified, and the manufacturing and assembling processes are simpler.

The invention relates to a centralized air supply device of a railway car equipment compartment and an equipment compartment ventilation system. The equipment compartment is composed of a apron board, a bottom plate, an end plate and a framework, one or two centralized air supply devices are installed in the equipment compartment, first air inlets and first air outlets are formed in the apron board, an air inlet of the centralized air supply device is communicated with the first air inlets in the apron board, and an air outlet of the centralized air supply device is communicated with the equipment compartment and used for providing cooling air for air-using equipment in the equipment compartment. Inlet air for the air-using equipment in the equipment compartment is extracted in the equipment compartment, the heat radiation and air filtering effects are good, micro-positive pressure in the equipment compartment is guaranteed, the ways that dust and ice snow enter the equipment compartment are reduced, the number of the first air inlets in the apron board is reduced, and manufacturing and maintenance cost is lowered so that cars can run safely in extremely cold, strong sandy wind, high-temperature environments and other severe environments.

The invention discloses a hydraulic rotary system start-stop buffering device, and a crane. The invention belongs to the technical field of a hydraulic system. The system comprises a closed type hydraulic pump and a rotary motor. An oil outlet of the closed type hydraulic pump is connected to an oil inlet of the rotary motor. An oil outlet of the rotary motor is connected to an oil inlet of the closed type hydraulic pump. The rotary motor is connected to a brake. A buffering device is connected in parallel with the rotary motor on a hydraulic oil path. The buffering device comprises an oil conduction part, an overflow part, and a damping conduction part. An oil outlet of the buffering device communicates with an oil tank. According to the invention, a bypass oil path with restricted flow rate is adopted, heavy load is increased or started or stopped damping is rapidly rotated, pressure gaining is retarded, the controllability is good, and the service life of a brake pad is prolonged.

The invention discloses a light-emitting diode encapsulating structure, which comprises an electrode, a plurality of light-emitting diodes and an encapsulating body, wherein the light-emitting diodes are electrically connected with the electrode; the encapsulating body is covered on the light-emitting diodes; the electrode comprises a plurality of metal layers which are formed at certain intervals; one surface of the encapsulating body which is adjacent to the electrode is provided with grooves which correspond to the light-emitting diodes; the light-emitting diodes are accommodated in the grooves, and are connected with the electrode through electrode pads; and reflecting parts are arranged around the peripheral part of the encapsulating body which is close to the electrode. The invention further relates to a manufacturing method of the light-emitting diode encapsulating structure.

The invention discloses a bionic anti-sticking high-frequency electrotome bit, and belongs to the technical field of energy-carrying minimally invasive medical instruments. The bionic anti-sticking high-frequency electrotome bit takes a plant leaf with anti-sticking and desorption functions as a prototype, a bionic surface form with round grooves and strip-shaped grooves distributed in a compound mode is machined in the surface of a high-frequency electric-conduction blade by simulating the surface form of the plant leaf, the round grooves and the strip-shaped grooves are distributed in the length direction of the blade alternatively, and the interval between the two types of forms is equal to the radius of the circle; the round grooves and the strip-shaped grooves are respectively distributed in the width direction of the blade at equal intervals, and the center distance is 460-700 micrometers; the diameter of each round groove is equal to the width of each strip-shaped groove and is 180-300 micrometers; the length of each strip-shaped groove is 800-1400 micrometers; the depth of each round groove and the depth of each strip-shaped groove are the same and are both 60-100 micrometers. The bionic anti-sticking high-frequency electrotome bit effectively reduces the carbonization and sticking phenomena of the tissue when the electrotome works at a high temperature, and is favorable for heat radiation, and the minimum sticking quality is reduced by about 39% compared with a smooth electrotome bit.

The present invention relates to an automobile battery module. The automobile battery module comprises a round battery module, a fixation apparatus for installing the battery module, a front cover plate and a rear cover plate. The fixation apparatus comprises a base, a lower holding support, a top cover and at least an upper holding support. An air intake channel is arranged inside the base. The top surface of the base, the groove bottoms of the semi-circular grooves of the upper holding support and the lower holding support, and the groove bottom of the semi-circular grooves of the top cover are provided with vents, wherein the vents are communicated with the air intake channel. The round battery module is positioned in a cylinder-shaped cavity, and the gap exists between the round battery module and the cavity wall, wherein the cylinder-shaped cavity is formed by the space between the upper holding support and the lower holding support, and the space between the upper holding support and the top cover. With the automobile battery module of the present invention, the heat dissipation environment of the battery module can be improved, and the service life of the battery module can be increased.

The invention discloses a vacuum switch tube. The vacuum switch tube comprises a transparent insulating shell, wherein a fixed end cover plate is arranged on the top of the transparent insulating shell, a movable end cover plate is arranged at the bottom of the transparent insulating shell, a fixed electric conduction rod penetrates through the fixed end cover plate from top to bottom, a movable contact is arranged at the bottom of the fixed electric conduction rod, a movable electric conduction rod penetrates through the movable end cover plate from bottom to top, a movable contact corresponding to the fixed contact is arranged on the top of the movable electric conduct rod, and a corrugated pipe is arranged outside the movable electric conduction rod. The vacuum switch tube is characterized in that inner layer shielding covers are wrapped on the fixed contact and the movable contact in a sealed mode, and outer layer shielding covers are wrapped on the inner layer shielding covers in a sealed mode. The double-layer shielding cover structure is adopted, and therefore safety is higher; a cooling structure is further arranged, and therefore the temperature of the shielding covers is prevented from being excessively high.

The invention discloses a multilayer spacer type IC (Integrated Circuit) chip stacked package of a substrate and a production method of the package. The package comprises a BT (Bismaleimide Triazine) substrate, wherein at least two IC chips are bonded onto a carrier of the BT substrate, all the IC chips are stacked and bonded in sequence, a bonding pad on each IC chip is connected with a bonding pad on the BT substrate through a bonding wire, a plastic package body is fixedly packaged on the BT substrate, and a spacer is bonded between every two adjacent IC chips. The production method comprises the steps of: thinning and scribing wafers and the spacers, bonding the IC chips onto the carrier of the BT substrate, then bonding the spacers onto the IC chips, and bonding the IC chips onto the spacers again to make the stacking layer number meet a use requirement, wherein the processes of baking, plasma cleaning and pressure welding are needed once each IC chip is bonded; and then bonding the IC chips continuously, and performing subsequent procedures by adopting the prior art to prepare the multilayer spacer type IC chip stacked package of the substrate with the required layer number. According to the package disclosed by the invention, the height of the bonding wire is not influenced, and the heat radiation and insulation performances of the chips are improved.

The invention relates to an LED lamp and a reflector. The reflector comprises a rotator-shaped reflecting portion, the reflecting portion consists of a plurality of annular round table surfaces and a plurality of annular surfaces connected with the adjacent annular round table surfaces, crossing angles of buses on longitudinal sections of the adjacent annular round table surfaces are increased gradually, and outer diameters of the adjacent rings are increased gradually. The LED lamp consists of a light-transmitting shell component and an LED circuit board arranged in the shell component, and a plurality of LED light sources are fixedly disposed on the LED circuit board and are annularly distributed on the periphery of the reflector. By the aid of the gradually expanding reflector, light rays emitted by the LED light sources distributed on the periphery of the reflector are reflected after being projected to the outer wall of the reflector, light rays in different directions are formed, and accordingly the purpose of annular illumination is achieved. Simultaneously, the LED light sources are distributed on the same plane, wires of the LED light sources are arranged on the back of the LED circuit board, and the LED lamp with the structure can realize an annular illumination function and is simultaneously simple in structure.

The invention discloses an assembly technology for an intelligent battery. The intelligent battery comprises a cover body, wherein a chip mounting groove for mounting an intelligent chip is reserved in the middle of the cover body; the assembly technology for the intelligent battery comprises the steps as follows: 1, pre-burying connecting sheets in the cover body; 2, firmly welding one ends of the connecting sheets and post terminals while the post terminals and lug plates are welded; 3, placing the chip in the chip mounting groove; 4, firmly welding the positive welding leg and the negative welding leg of the chip and the other ends of the positive connecting sheet and the negative connecting sheet respectively; 5, checking, performing adhesive sealing and cover sealing and waiting for solidification of the liquid adhesive. According to the invention, the chip is mounted on the upper surface of the battery cover, after formation charging of the battery, the chip is welded and sealed with the adhesive before cover sealing, so that damage to the chip and corrosion to the chip by acid liquor in the formation process are avoided, the situation that the cover body is burned out by the overheating chip due to formation is avoided, and the connecting sheets are welded together with the post terminals, a separately increased procedure is omitted, and time and labor are saved.

The invention provides a rail carbon brush device of a brush motor, which comprises a carbon brush substrate (16) and at least two carbon brush components (17), wherein the carbon brush substrate (16) is an isolator and is used for supporting the carbon brush components (17); each carbon brush component (17) comprises a carbon brush (20), an elastic piece (30) and a pair of guide rails (36) fixedon the carbon brush substrate (16); a concave chute (21) is formed on the opposite surfaces of the carbon brush respectively and is arranged on the guide rails (36); the end of the elastic piece (30)is connected to the carbon brush (20) and the elastic piece (30) elastically drives the carbon brush (20) to slide to a motor commutator along the guide rails (36); the guide rails (36) consist of edges of rigid guide plates (35); and the guide plates (35) are substantially parallel to the carbon brush substrate (16) and are fixed on the carbon brush substrate (16). In the rail carbon brush device of the invention, the carbon brush can be stably supported by the rails and can be exposed in the air to the largest extent so as to conveniently dissipate heat.

The invention provides a waterproof embedded electronic device comprising a shell and a circuit board assembly arranged in the shell, wherein the shell comprises an upper box body of an integral seamless structure; the upper box body comprises a top and side walls surrounding the top; an accommodating space is formed by the top and the side walls; an opening of the upper box body is downwards; a cover body is covered at the peripheral edge of the bottom of the upper box body; the bottom of the cover body is provided with at least one through hole; the inner side of the cover body is vertically provided with a fixed plate; and the circuit board assembly is fixed on the fixed plate. Compared with the prior art, the waterproof embedded electronic device has the advantages that the shell can effectively prevent water drops from flowing or permeating into the electronic device through seams and protecting electronic elements arranged in the shell from causing short circuit to result in damage; and the waterproof embedded electronic device is simple in structure and good in heat radiation performance.

The invention discloses a process for preparing absorbent resin comprising, charging water, sodium hydroxide, acrylic acid, N, N'-methylene di-propenamide and potassium peroxodisulfate into stirring still, homogenizing, going through preheating section, reaction section, heat preservation section in sequence, carrying out heat exchange and polymerization reaction.

The invention discloses a blower impeller comprising a central disc and blades fixedly connected to the central disc. The blades are peripherally and evenly distributed on the central disc. The central disc is provided with a plurality of square openings evenly distributed on the periphery of the central disc. The square holes in the central disc allow air entering from the front of a blower to blow to a motor from the square holes so as to cool the motor, so that motor temperature can be reduced, the motor can be cooled and the service life of the motor is effectively prolonged.

The invention discloses an LED fluorescent lampshade which comprises a lamp holder interconnecting piece and an LED lamp wick accommodating chamber. An LED lamp wick insertion hole portion of the LED lamp wick accommodating chamber is fixed to the lamp holder interconnecting piece. The outer wall of the LED lamp wick accommodating chamber is provided with heat radiation through holes. The manufacturing method of the LED fluorescent lampshade comprises the following steps: (1) lampshade shape design, (2) material mixing, (3) granulation, (4) molding, and (5) machine tooling. With the LED fluorescent lampshade and the manufacturing method thereof provided by the invention, the traditional practice of mixing fluorescent powder and silica gel / resin and covering an LED chip with the mixture is changed, and light is emitted directly through the fluorescent lampshade, which is beneficial to the heat radiation of an LED device and the increase of the service life of the LED device. At the same time, the use of the fluorescent lampshade eliminates the situation that the transition efficiency of the fluorescent powder is reduced due to the heat generated by the LED chip at work, and makes the emitted light stable and uniform.

The invention discloses a flat-pipe heat exchanger structure which comprises an inlet header, an outlet header, fins and a flat pipe, wherein the fins are compactly stacked between the inlet header and the outlet header; the flat pipe communicates the inlet header with the outlet header by penetrating through the fins; the cross section of the flat pipe is a rounded rectangle; two side plates of the flat pipe project forward along the pipeline to form a leading end; the fins are provided with a pipeline groove; and the middle of the pipeline tank is provided with a rectangular opening of which the width is smaller than the thickness of the flat pipe. The invention also discloses an assembling table of the flat-pipe heat exchanger structure, which comprises a platform, wherein a through hole corresponding to the pipeline groove is formed on the edge of the platform. The fins in the heat exchanger structure are connected with the flat pipe in an interference mode, thereby maximally increasing the contact area of the fins and the flat pipe, benefiting heat abstraction, enhancing the heat abstraction performance of the heat exchanger, and ensuring the strength of the heat exchanger. By eliminating the welding procedure, the invention is easy to operate and saves more cost.

The invention relates to an electronic device and a heat dissipation device thereof. The electronic device comprises a case and a mainboard arranged in the case. The heat dissipation device is arranged on the mainboard, and a heating element and slots adjacent to the heating element are arranged on the mainboard. The heat dissipation device comprises a heat dissipation block adhered to the heating element, a heat dissipation fin, a board card and heat pipes, wherein the heat dissipation fin and the board card are fixed, and the heat pipes are connected between the heat dissipation block and the heat dissipation fin; and the board card comprises a plugging part for being plugged into the slots of the mainboard. Compared with the prior art, in the electronic device and the heat dissipation device thereof, the board card being plugged into the slots of the mainboard is utilized to reinforce the heat dissipation fin, so that the larger-size heat dissipation fin can be fixed, and thus the heat dissipation is favorable.

The invention discloses a light path heat dissipating combination system for a spotlight. The light path heat dissipating combination system comprises a light path system and a heat dissipating system, wherein the light path system comprises a COB integrated light source, a light source light receiver, an aspherical mirror and a plano-convex lens; the light source light receiver is a cylinder body of which two ends are opened; a light emergent outlet is formed in one end of the cylinder body; a conical surface concaved into the cylinder body is arranged at the light emergent outlet end; an opening is formed in the bottom of the conical surface and is used as a light incident inlet; the end face of the light incident inlet and the end face of the other end of the cylinder body are positioned on the same horizontal plane; a vacuum coating layer is arranged on the conical surface; the vacuum coating layer and the conical surface jointly form a reflection part of the light source light receiver; the light incident inlet is greater than the light emergent outlet; the aspherical mirror is fixed at the light emergent outlet of the light source light receiver by an aspherical mirror pressing plate; an aspherical mirror silicone buffer washer is arranged between the aspherical mirror pressing plate and the light source light receiver; and center lines of the plano-convex lens, the aspherical mirror, the light source light receiver and the COB integrated light source are positioned on the same axis. The light path heat dissipating combination system disclosed by the invention has the characteristics of low cost, higher luminous efficacy, excellent heat dissipation potential and capability of prolonging the service life of the spotlight.

The invention discloses a flame-retardant 5G cable, and belongs to the technical field of the cable. The cable comprises a cable core, a functional layer wrapping the outer side of the cable core, anda sheath layer wrapping the outer side of the functional layer. The cable is characterized in that the functional layer comprises an elastic thermal insulation layer arranged on the outer side of thecable core and a thermal shrinkage layer arranged on the outer side of the elastic thermal insulation layer. At least two rows of heat dissipation holes are formed in the functional layer at equal intervals along the periphery of the functional layer. The heat dissipation holes are in a crack shape parallel to the length direction of the cable. Thermal expansion tires in one-to-one correspondencewith the rows of the heat dissipation holes are fixed on the outer side of the cable core along the circumference of the cable core at equal intervals, and each thermal expansion tire abuts against the middle part of a part between two adjacent rows of heat dissipation holes in the elastic heat insulation layer, the thermal expansion tire is fixed on the cable core through a fixing groove body with a U-shaped cross section, and the opening side of the fixing groove body faces the fixing groove body. The flame-retardant cable has the flame-retardant function, and meanwhile heat dissipation ofthe cable core can be well achieved.

The invention discloses an improved hydraulic motor, a front end tapered roller bearing, a rear end tapered roller bearing and a driving shaft are installed by interference fit, an intermediate pressure ring is installed on the front end tapered roller bearing by interference fit, an oil groove radial channel arranged on the driving shaft is extended to the driving shaft front end to prompt the driving shaft to generate centrifugal force to improve the hydraulic energy to transform into mechanical energy efficiency; the intermediate pressure ring and an outer ring of the rear end tapered roller bearing are in interference fit with an inner hole of a motor casing; a bearing pressure cover is mounted in the motor casing, a plunger ring shrinks and sheathes a plunger, the plunger and a ball head end of a center connecting rod are respectively installed in the driving shaft, a cylindrical spring is installed in the center connecting rod for prevention of locking of the center connecting rod, the cylindrical spring and the axially uniformly distributed plunger are filled into a cylinder body, an oil distributing plate and the cylinder body spherical surface are fit, a spring seat is arranged in the end part of the center connecting rod; a rear end cover is installed in the motor casing end part, a positioning pin is inserted into the oil distributing plate, and a flush valve is tightly installed on the rear end cover end part in order to realize the automatic control of cooling.

The invention provides an image processing method and device and an electronic device. The method is applied to an electronic device. The electronic device comprises a structured light transmitter andan image collector. The method comprises the steps of starting light source points in the structured light transmitter according to a line or according to a column; projecting structured light to a current user through currently started light source points and closing the currently started light source points after the structured light is transmitted; and controlling the image collector to photograph a structured light image modulated by the current user each time and superposing the images to obtain a target image. Through application of the method, the instantaneous power consumption when amobile terminal carries out photographing can be reduced, so the technical problem that in the prior art, the instantaneous power consumption is high is solved.

The invention discloses an electromagnetic braking device for a rotary main shaft. The electromagnetic braking device comprises a braking part, an excitation power supply and a measurement and control part, wherein the braking part comprises a high-magnetic-conductive electromagnetic braking disc and a DC electromagnet which are arranged on the main shaft, the main shaft is further connected with a motor and a coupler, the braking disc is arranged between two magnetic poles of the DC electromagnet and is not in contact with the DC electromagnet, and the coupler and the motor are respectively arranged on both sides of the braking disc; and two identical cylindrical magnet protruding blocks are symmetrically arranged on the right side end surface of the braking disc. The electromagnetic braking device for rotary main shaft solves the problems that the traditional electromagnetic braking device has great electromagnetic loss, high temperature rise, cannot operate for a long time, cannot be applied to high-speed main shaft equipment and the like.

The application discloses a heat dissipation and dustproof device for a power distribution cabinet. The heat dissipation and dustproof device of the power distribution cabinet includes a box body of the power distribution cabinet, a cooling fan and a dustproof device. The wall of the box body of the power distribution cabinet is provided with an air inlet and an air outlet. The hot air in the power distribution cabinet flows upwards and flows out through the air outlet, and the external cold air enters through the air inlet to form a circulation of cold and hot air, which is more conducive to heat dissipation. The dust-proof device is composed of a mounting plate, filter cotton and a gland. The heat dissipation fan and the mounting plate are installed on both sides of the air outlet through flat head screws. The heat dissipation fan accelerates the flow of hot air. The plate has a conical countersunk hole, and the flat-head screw is flush with the plane of the mounting plate after tightening; the filter cotton is placed in the gland, and the filter cotton can be very effective in dustproof, and the gland is installed with the mounting plate through the bayonet on the mounting plate described above. The dustproof device is similarly installed at the air inlet. The dust-proof device can be disassembled and assembled by hand, which is convenient for cleaning.

The invention relates to an integrated circuit semiconductor device which comprises a plastic body which is provided with a built-in integrated circuit chip, and the plastic body is equipped with a chip electrode extension end. The integrated circuit semiconductor device is characterized in that: (1) the bottom of the plastic body is equipped with a notch groove which is inserted with a heat emission plate connected with the integrated circuit chip; (2) the plastic body is equipped with a lock screw through hole which vertically intersects with a heat emission plate, an opening is correspondingly arranged on the periphery of the screw through hole on the heat emission plate to prevent the lock screw from contacting with the heat emission plate, and the diameter of the opening is larger than the internal diameter of the screw through hole. The device is helpful for the heat emission of the internal chip of the integrated circuit semiconductor device, and has the advantages of novel design, simple structure, good insulation effect, convenient production, and has great popularization significance.

The invention relates to a preparation method of a FeSi2 modified C / SiC braking material. A method combining CVI with RMI is adopted to prepare the FeSi2 modified three-dimensional needled C / SiC braking material. The preparation method includes: taking FeSi75 alloy powder as a RMI infiltration raw material; obtaining the FeSi2 modified C / SiC braking material through a reactive melt infiltration (RMI) process. By the preparation method, raw material cost is lowered remarkably, and RMI process temperature is lowered; a FeSi2 phase is introduced into a C / SiC composite material, so that strength and heat conductivity of the braking material are improved, friction stability is improved, and wear rate is lowered.

The invention discloses an LED epitaxial wafer grown on a magnesium aluminate scandium substrate. The LED epitaxial wafer comprises a GaN buffer layer grown on the magnesium aluminate scandium substrate, an Al nano island layer grown on the GaN buffer layer, a non-doped GaN layer grown on the Al nano island layer, an n-type doped GaN film grown on the non-doped GaN layer, an InGaN / GaN quantum well grown on the n-type doped GaN film and a p-type doped GaN film grown on the InGaN / GaN quantum well. The invention also discloses a preparation method of the LED epitaxial wafer grown on the magnesium aluminate scandium substrate The LED epitaxial wafer grown on the magnesium aluminate scandium substrate has the advantages of being simple in growth technology and low in preparation cost, and the prepared LED epitaxial wafer has smooth surface, low defect density and great photoelectric performance.

The invention provides an insect prevention device, a controlling method and device thereof, an electric box and electric equipment. The insect prevention device comprises a circuit device and at least one metal mesh cover; the circuit device is connected with the metal mesh covers and used for supplying power to the metal mesh covers. According to the scheme, when insects touch the electrified metal mesh covers of the insect prevention device, the insects can be stunned or killed, so that the purpose of insect prevention is achieved; the density of insect prevention meshes does not need to be increased, and the heat dissipation is not affected.

The invention discloses a container type diesel generator set suitable for high-environment-temperature work. The set consists of a diesel engine, a generator, a public chassis, a control system, a cooling water tank, a container, a silencer and the like. The set is characterized by using the advantages of such technologies as air filter direct container external intake, generator direct container external intake and exhaust cooling and top electric multistage water tank cooling; the temperature in the container is reduced through reducing the cooling capacity in the container; the air filter and generator cooling adopts direct intake and exhaust out of the container; the water tank is directly cooled out of the container; and the high-water-temperature warning of the diesel generator set cannot be caused by high temperature in the container due to placement of the diesel generator set in the container so as to enable the diesel generator set to be incapable of operating with full power. The container type diesel generator set has the advantages of low temperature rise in the container, high reliability of the diesel generator set, low power loss and adaptation to high-environment-temperature places.

The invention provides an energy-saving lighting device. The device includes a heat dissipation substrate, an LED chip, a conductive pattern, a first insulating material layer and a transparent conductive layer. The heat dissipation substrate has a first surface provided with the conductive pattern and a second surface opposite to the first surface, the LED chip is fixed on the part, not providedwith the conductive pattern, on the first surface of the heat dissipation substrate through a bonding layer, and a gap is formed between the LED chip and the conductive pattern; the heat dissipation substrate is further provided with a stretch-in groove formed in the first surface, and a through hole corresponding to the stretch-in groove is formed in the conductive pattern; the first insulating material layer covers the side face of the LED chip and fills the gap; the transparent conductive layer is electrically connected with an electrode of the LED chip and the conductive pattern, is located on the first insulating material layer and fully fills the stretch-in groove and the through hole.