649results about How to "Dissipate heat in time" patented technology

The invention relates to LED street lamp. It includes lamp body and LED bulb. The body includes head, middle, tail sections. The head and tail sections are butt joint with gasket. Another end of middle section is butt joint with the tail section. The head section is connected with the middle one by fastener. The tail one and the middle one are also the same. The middle one is section bar with same cross section in different position which has basal plate formed by two flats with Chinese-eight shape and joint plate. The invention supplies a modular assembling LED street lamp which has good heat dispersion, can produce the product with different shapes and specifications by one set of module.

The invention provides a charging equipment cooling system which comprises a charging gun, a charging cable, a radiator, a circulating pump and a circulating fluid pipeline, wherein a cooling material is arranged in the circulating fluid pipeline, and the driving force of the cooling material is supplied by the circulating pump; the charging gun and the charging cable are connected in series by virtue of the circulating fluid pipeline, the heat is carried away by the cooling material, and the circulating fluid pipeline transfers the heat to the radiator for radiating; the charging cable comprises a plurality of main cable conductors and main cable insulating layers coating the main cable conductors; a plurality of main cable terminals and cooling tanks which cling to the main cable terminals are arranged in the charging gun, each cooling tank has a hollow structure and is provided with an inlet and an outlet, and the circulating fluid pipeline passes through the inside of each main cable conductor and is connected with the inlet and outlet of each cooling tank, so that the cooling material in the circulating fluid pipeline flows into or flows out of each cooling tank; and the main cable conductors are connected with the main cable terminals to realize electric connection between the charging cable and the charging gun. According to the charging equipment cooling system provided by the invention, the heat of each part can be radiated to the outside in time, thereby ensuring timely radiating in heavy-current charging and ensuring the charging safety.

The invention discloses a charging equipment cooling system. The charging equipment cooling system comprises a charging gun, a charging cable, a radiator, a circulating pump and a circulating fluid pipeline. The circulating fluid pipeline is internally provided with cooling liquid. The charging gun and the charging cable are in series connection with each other through the circulating fluid pipeline and heat of the charging gun and the charging cable is taken away through the circulating fluid pipeline, the circulating fluid pipeline transfers the heat to the radiator to conduct heat dissipation, and the driving force of the liquid in the circulating fluid pipeline is provided by the circulating pump. The charging gun is internally provided with a terminal cooling groove, the terminal cooling groove is a liquid cooling groove which is closely attached to terminals in an isolated mode, and the terminal cooling groove is provided with a liquid inlet and a liquid outlet. The liquid in the circulating fluid pipeline flows into the terminal cooling groove through the liquid inlet, and the liquid in the terminal cooling groove is discharged through the liquid outlet and flows into the circulating fluid pipeline. According to the charging equipment cooling system, heat of all parts can be timely dissipated to the outside, and thus timely heat dissipation and the charging safety during big current charging can be guaranteed.

The invention discloses a cooling system of a flywheel energy storage device. The flywheel energy storage device consists of a shell and an internal disc-type motor, wherein the shell has a vacuum sealing structure; an upper oil cavity and a lower oil cavity are respectively arranged at the upper part and lower part of the shell; the shell internally comprises at least one set of flywheel; a center shaft of each flywheel is a hollow mandrel, and an axle hole is formed in the center of the center shaft and is communicated with the upper oil cavity and the lower oil cavity; an oil tank is arranged outside the shell; the oil tank is communicated with the upper oil cavity by an upper oil pipe and is communicated with the lower oil cavity by an oil return pipe; the oil return pipe is provided with a third valve, an oil pump and a radiator. The cooling system can be used for cooling a rotor by the axle hole, so that a great deal of heat of the rotor which rotates at a high speed can be taken away in time, and safe and stable operation of the flywheel energy storage device is guaranteed. An upper bearing, a lower bearing and a stator disc are cooled in time by part of cooling oil, and the bearings can be lubricated, so that the reliable work of key parts can be guaranteed, and the defects of cavitation and the like of a pump caused by low pressure can be avoided.

The invention discloses a computer mainframe box with a function of fast heat dissipation. The mainframe box includes a fixing box, a sliding groove is formed in the bottom of the inner wall of the fixing box, and the top of the inner wall of the fixing box is fixedly connected with a motor through a support, wherein the output shaft of the motor is fixedly connected with a first belt pulley through a coupling, the surface of the first belt pulley is in transmission connection with a second belt pulley through a belt, and the middle portion of the second belt pulley is provided with a rotating shaft in a penetrated mode; the bottom end of the rotating shaft is fixedly connected with a turntable. The invention relates to the technical field of computers. The computer mainframe box with the function of the fast heat dissipation solves the problems of low heat dissipation speeds and poor heat dissipation effects in the existing computer mainframes nowadays. Moreover, the computer mainframe box can conduct heat dissipation on a computer mainframe in time to prevent the mainframe from being easily broken, improve the work efficiency of the computer mainframe, prolong the service life of the computer mainframe, avoid causing unnecessary troubles to people, and ensure that economic losses do not occur on people. The computer mainframe box is simple in structure and easy to operate.

Provided is a protection circuit for preventing temperature of a peripheral circuit of an integrated circuit from being too high. The protection circuit comprises a detecting circuit, a switching element and a control chip. The control chip is used for controlling an existing cooling device to dissipate heat of the peripheral circuit. The detecting circuit is connected with the control chip through the switching element. The detecting circuit and a thermistor arranged adjacent to the peripheral circuit are used for detecting temperature of the peripheral circuit. When the temperature of the peripheral circuit exceeding a presupposed temperature value is detected by the detecting circuit through the thermistor, the control chip is triggered by the detecting circuit through the switching element to strengthen the dissipation effect of the cooling device until the temperature of the peripheral circuit is lower than the presupposed temperature value and is detected by the thermistor. If the heat dissipating device running at full speed is still unable to enable the temperature of the peripheral circuit to fall below the presupposed temperature value, the control chip stops the peripheral circuit from working.

The invention relates to a high-efficiency LED (Light-Emitting Diode) dual chip high-low beam integrated automobile headlamp module. The high-efficiency LED dual chip high-low beam integrated automobile headlamp module comprises an LED light source, a reflection cup, a heat sink, a lens and a sleeve, wherein a locating platform for arranging the LED light source is arranged on the heat sink; the LED light source is of an upper LED light source and lower LED light source combined dual light source structure; the reflection cup is of an upper reflection cup and lower reflection cup combined dual reflection cup structure; an upper reflection cup locating platform and a lower reflection cup locating platform are respectively arranged at the upper side and the lower side of the locating platform; and a plurality of parallel fin-shaped cooling plates are arranged at the outer sides of the upper reflection cup locating platform and the lower reflection cup locating platform on the heat sink; and gaps are formed between the adjacent cooling plates. The high-efficiency LED dual chip high-low beam integrated automobile headlamp module is good in illumination effect and heat dissipation effect, high in illumination level and clear in visual field, and ensures that an automobile headlamp is in a safe and stable working environment, thus greatly improving the driving safety and prolonging the service life of the automobile headlamp.

The invention relates to an electronic beam composite added material manufacturing device. The device comprises a control system, an electronic gun and a working cavity; and an electronic beam emitting / focusing device is below the electronic gun. The device further comprises a base, a wire feeding mechanism and a milling head. The device compounds electronic beam molten wire molding with machining; the electronic beam molten wire molding and the reduced material machining are combined; the advantages of electronic beam quick molding are fully used; the precision and the surface smoothness of parts are improved through compound machining; the problems caused by traditional secondary clamping are overcome; the once production process of parts from non-existence to existent to qualified precision is realized; high-precision parts are obtained; the production period of the parts is totally shortened; the production cost is reduced; and the equipment support is provided for large-batch production.

The invention discloses an all-in-one machine with numerical control ink-jet drawing and laser cutting. The machine comprises a bracket, a rectangular working platform supported on the bracket, a power distribution box, a control circuit board and a main control board connected with the control circuit board, wherein the left edge and the right edge of the working platform are respectively provided with a longitudinal guide rail; a cross beam capable of moving on the longitudinal guide rail in a reciprocating manner is erected between the longitudinal guide rails; the cross beam is provided with a transverse trolley track which is provided with a trolley; the trolley is provided with an ink-jet device and a condensing lens of a laser cutting device; and the ink-jet device and the laser cutting device are respectively and electrically connected with the control circuit board. The all-in-one machine has the advantages that an ink-jet mode and a laser cutting mode are simultaneously applied in a cutting machine; since cut materials can not be contacted in both the ink-jet mode and the laser cutting mode, all the materials needing to be cut can be cut accurately, the high temperature and the wastes generated by cutting can be discharged in time, a laser tube can be dissipated in time, and the all-in-one machine provides multiple data output modes.

The invention discloses a multi-disc type magnetorheological fluid clutch and belongs to the field of magnetorheological fluid clutches. The multi-disc type magnetorheological fluid clutch comprises a coil, a coil baffle, a right side outer shell vent hole, a seal ring, a right side outer shell, an end cap, a left side outer shell, a driving shaft, a driven shaft, a master driving disc, an auxiliary driving disc, a slave driving disc, a master driving disc check ring, a slave driving disc check ring, a right magnetism conduction side plate, an outer magnetism separation ring, a left magnetism conduction side plate, a driving side plate which is integrally formed with the driving shaft and an inner magnetism separation ring which is connected with the driving side plate. The multi-disc type magnetorheological fluid clutch further comprises a heat sink which is arranged in the inner portion of the inner magnetism separation ring and fan blades which are arranged on the inner side of the driving shaft and are connected with the driving side plate, the heat sink is fixed between the driving shaft and the auxiliary driving disc, fan-shaped holes which are communicated with the driving side plate and the left side outer shell are formed in the positions of the driving side plate and the left side outer shell, and the positions correspond to the fan-shaped holes which are formed in the left magnetism conduction side plate, the heat absorption end of a heat pipe is deeply inserted into the inner portion of the driving disc, and the heat dissipation end of the heat pipe is provided with a heat dissipation wing. The multi-disc type magnetorheological fluid clutch has the advantages of being good in heat dissipation effect and being capable of working in a slip frequency state for a long time.

The invention discloses a protection device of portable sound equipment for outdoor use. The protection device comprises an outer frame; a shock absorption spring is fixedly connected to the bottom ofthe cavity of the outer frame; a shock absorption and buffer plate is fixedly connected to the top of the shock absorption spring; first cylinders are fixedly connected to the top of the cavity of the outer frame and at 90-degree included-angle positions; a first extrusion expansion rod is fixedly connected to the surface at the bottom of the first cylinder; one end of the first extrusion expansion rod away from the first cylinder is contacted with the shock absorption and buffer plate; a first opening is formed in the middle of the front of the outer frame; sliding rails are symmetrically arranged at two sides of the surface on the top of the shock absorption and buffer plate; and a fixed frame is glidingly connected to the upper surface of the sliding rail. The invention relates to thetechnical field of sound equipment. According to the protection device of the portable sound equipment for outdoor use, the purpose of buffering and damping the sound equipment is achieved; furthermore, the sound equipment can be cooled in time, and can keep out sun and rain; and thus, the service life of the sound equipment is easily prolonged.

The invention discloses an embedded-copper-block printed circuit board, comprising a top wire layer, a prepreg layer and a bottom wire layer which are arranged in sequence; the bottom wire layer is provided with a receiving cavity; a radiating copper block is arranged in the receiving cavity; the top wire layer is provided with blind holes; the bottoms of the blind holes are connected with the radiating copper block. The radiating copper block is embedded in the circuit board, the top wire layer is connected with the radiating copper block via the blind holes, and a device may be welded directly to the laser blind holes and the radiating copper block such that a radiating substrate has greatly improved radiating and heat-conducting effects; the printed circuit board is applicable to heat dissipation for high-power devices; the printed circuit board is connected with the radiating copper block via the blind holes so that heat of the high-power devices may be dissipated in time, and thestability and reliability of the high-power devices are improved. The invention also discloses a method of manufacturing the embedded-copper-block printed circuit board. The manufacturing method is simple, the conditions are mild, and the manufactured printed circuit board has good radiating effect and good structural stability and rarely cracks.

The invention discloses a steam box and microwave oven integrated machine, and the machine comprises a box body and a cooking room furnace chamber. The interior of the box body is provided with a steam generation device and a microwave generation device. The machine is characterized in that a back space of the cooking room furnace chamber is divided into an upper space and a lower space; the steam generation device is disposed in the lower space; a magnetron and a waveguide pipe in the microwave generation device are disposed in the lower space; other elements in the microwave generation device are disposed in the upper space; the upper space and the lower space are communicated with each other, and are respectively communicated with an upper air channel and a lower air channel of the external space of the box body. According to the invention, the back space of the cooking room furnace chamber is divided into the upper space and the lower space, thereby making the most of the back space of the cooking room furnace chamber. The layout of steam and microwave elements is more reasonable, thereby facilitating the improvement of the structural compact of the machine. In addition, the design of the upper and lower air channels effectively solves a problem of air ventilation between the upper and lower spaces, and facilitates the timely heat dissipation of the steam and microwave elements.

The invention provides a 'solar photovoltaic power generation device', which adopts an optical superposition method, three groups of reflecting mirrors (ordinary plate glass mirrors) are used for causing the sunlight to be fully superposed on a silicon chip on different levels, a 24-hour computer is matched to automatically track the sun, namely, longitude tracking, latitude tracking and earth revolution angle tracking, therefore, the effect that the power generation capacity of an ordinary solar chip is improved by more than 6.6 times is obtained. The power generation efficiency of the current silicon chip is 16 percent, while the power generation efficiency of the invention reaches more than 105.6 percent. The invention utilizes the equilibrium principle and puts the point of strength on the overcoming of the damping of a bracket instead of the self weight of the bracket, therefore, a gear is not easy to be damaged and power consumption is saved. By repeatedly testing, power consumption needed by the tracking device is only 3 percent to 5 percent of the self power generation (the power consumption includes electric energy consumed during the heat dissipation of the chip).

The invention relates to the field of heat dissipation, in particular to a 5G base station heat dissipation system based on big data processing, which comprises an antenna shell, a fixing mechanism, an air inlet mechanism, a heat dissipation mechanism, a drainage mechanism, a placement mechanism, a locking mechanism and an observation structure, the antenna shell is beneficial to placement and protection of the transmitting equipment; under the action of the placing mechanism; the launching equipment can be conveniently fixed; under the action of the locking mechanism; the transmitting equipment can be conveniently put into and taken out of the antenna shell; under the action of the heat dissipation mechanism; absorption of a large amount of heat generated by the transmitting equipment isfacilitated; under the action of the air inlet mechanism; the air inlet structure is arranged in the antenna shell, so that cold air dissipates heat of the heat dissipation mechanism, heat is led out,heat dissipation or rainwater flowing into the antenna shell from the outside can be drained under the action of the drainage mechanism, the air inlet amount of the air inlet structure can be adjusted according to the temperature change through the temperature change of the antenna shell, timely heat dissipation of equipment can be guaranteed, and normal use of the equipment is guaranteed.

The invention relates to a method for manufacturing a white light LED by single crystals. YAG:Ce3+ single crystals are used as a luminescent material of the white light LED. The design idea of the method comprises the following steps of: heating the raw materials of 45 to 70 percent of Al2O3, 20 to 40 percent of Y2O3 and 0 to 4 percent of Ce2O2 in a proportion to the temperature of 1,970 DEG C in an iridium crucible according to the formula of cerium-doped yttrium aluminum garnet, and heating the raw materials into a melt; growing a pure YAG crystal serving as a seed crystal in a D400 single crystal furnace so as to obtain complete single crystals which have various concentrations without obvious defect; adhering the crystals to organic glass and cutting into wafers with the needed dimension and the thickness of 0.2 to 5mm by using a carbon plate cutting machine; and soaking for 12 hours by using acetone, performing coarse sand and fine sand grinding, polishing two sides of the crystals for over 6 hours by using a polishing machine, performing microscope detection to determine no sand hole or defect, and packaging the processed crystals with different concentrations and thicknesses on an LED light-emitting diode by using a high temperature resistant colloid. The crystals have the advantages of excellent heat conductivity and physical and chemical stability, and capacities of effectively improving the luminous efficiency of the LED and prolonging the service life of the LED.

The invention relates to an application occasion that requires combination of the axial rotation of a laser head and the lifting motion in a vertical direction in the field of laser surface fine processing, in particular to a rotary laser head auxiliary gas transmission device for a laser processing machine tool. By the device, the rotation and up-and-down linear motion of the laser head can be realized and an independent gas cavity is adopted to transmit an auxiliary gas, so good gas tightness of the system and output pressure intensity of the auxiliary gas can be guaranteed; due to a focusing lens in the laser head, axial adjustment can be realized so as to change the position of a focusing point of a laser beam; and during rotation, the laser head keeps rotation coaxiality with higher precision.

The invention discloses a fan system and an equipment cabinet for electronic equipment. The fan system comprises a working fan group consisting of one or more than one working fan, a movable redundancy fan and a position adjusting device. When the working fans have faults, the redundancy fan can be moved to a correct position, so that the original working state of the working fan group before the faults happen can be maintained. The work stability of the fans can be maintained, and the heat of the electronic equipment can be radiated in time. In addition, due to the movable connection of the redundancy fan, the utilization efficiency of the redundancy fan can be increased, and the fan system is convenient to operate.

The invention belongs to the technical field of automobile illumination and in particular relates to an LED (Light Emitting Diode) automobile high-beam and low-beam integrated headlamp. The LED automobile high-beam and low-beam integrated headlamp comprises an LED light source, a reflector cup, a lens and a radiator, wherein a platform for arranging the LED light source is arranged on the radiator and the lens is fixedly arranged on a sleeve through a clamping jaw; the sleeve is fixedly arranged on the radiator; a light barrier is fixedly arranged on the front side of the radiator and the light barrier is connected with a driving mechanism; a fixed elastic piece press-fits the LED light source on the radiator; the LED light source is connected with a power plug through a flat cable and the power plug is fixedly arranged on the rear side of the radiator; transverse partition grooves are formed in radiating fins. The headlamp not only has a good illuminating effect, higher luminance and a clear field of view, but also has a good radiating effect, the automobile headlamp is guaranteed to be in a safe and stable working environment, the driving safety is greatly improved, and the service life of the automobile headlamp is prolonged.

The invention discloses a power battery heat management system based on metal plate type pulse heat pipes. The power battery management system comprises a power battery support, a battery module box body and a box body top cover, wherein the power battery support comprises a plurality of single metal plate type pulse heat pipes, and two or more than two single batteries which are connected in series or in parallel are placed on the support. The power battery management system is characterized in that the surface of each single battery can be in close contact with the metal plate support, the pulse heat pipe in the metal plate is bent in a reciprocating way and is provided with an evaporation end and a condense end, the evaporation end is a part where the metal plates and the surfaces of the batteries are in contact, and the condense end is a part downwards extending from the metal plates, is arranged under the surfaces of the batteries and can play a role in supporting a battery module; and further, wind gaps with the same size and at the same position are formed below the metal plates and the box body and can be used for timely air drawing so that the heat of the condense end of the pulse heat pipe can be dissipated through forced convection. By the system, the technical problems of high-temperature heat dissipation, energy cyclic utilization and the like of a power battery can be efficiently and timely solved; the pulse heat pipes and the support are integrated, the space is fully saved, and the system is suitably used for various large-, medium- and small-sized apparatus depending on electrical driving and has very board market space.

The invention discloses a handheld laser welding device. The handheld laser welding device comprises a welder switch, a cooling switch, a welding cabinet, a U-shaped moving base, universal wheels provided with brake pads, a welder, a cabinet cover, a cooling motor, blades, a hollowed-out hood, a drag hook, an optical fiber, an adjustable handheld welding gun structure, an adjustable splash-proof protective cover structure and a suction-type scrap temporary collection and storage barrel structure. According to the handheld laser welding device, a gun cap, a welding gun body, a fixing pipe, a gun head, a U-shaped handheld rod, an anti-slip sleeve and an adjustment bolt are arranged, the position of the welding gun body in the fixing pipe can be adjusted easily by loosening the adjustment bolt, and thus, welding can be conducted more easily, and the welding device can be held by hand so as to be used more conveniently; and a supporting base, a connecting base, a rotary rod, a splash-proofcover, a connecting shaft and an adjustable telescopic rod are arranged, and the inclination angle of the splash-proof cover can be adjusted according to welding requirements so as to prevent splashmore conveniently.

The invention relates to a placing heat dissipation device, and particularly relates to a power capacitor placing heat dissipation device. The technical problem to be solved by the invention is to provide a power capacitor placing heat dissipation device, which dissipates heat thoroughly, can dissipate heat in time and is simple and convenient in operation. In order to solve the technical problem, the power capacitor placing heat dissipation device comprises a bottom plate, a first slide rail, a stay wire, a first slide block, a first spring, a supporting rod, a placing trough body, a first blade, a first rotating shaft, a second bevel gear, a first bevel gear and the like; the first slide rail, a reel, a motor and a first L-shaped rack are arranged at the top of the bottom plate in sequence from left to right; and the first slide block is arranged on the first slide rail. The device dissipates heat thoroughly, can dissipate heat in time and is simple and convenient in operation; when the device is used, comprehensive heat dissipation can be performed on a capacitor, so that the service life of the capacitor can be prolonged.

The invention discloses a photovoltaic inverter. The photovoltaic inverter comprises a cabinet and a power module arranged in the cabinet. The power module comprises an inversion power unit, a first ventilating duct and a second ventilating duct isolated from the first ventilating duct; the inversion power unit is located at the air inlet upstream of the first ventilating duct; the first ventilating duct is provided with a first air inlet and a first air outlet; and the second ventilating duct is provided with a second air inlet and a second air outlet. According to the photovoltaic inverter provided by the invention, the inversion power unit with more heat production is cooled by adopting an independent air duct and is arranged at the upstream of the first ventilating duct, so that cold air can timely cool the inversion power unit, and the heat dissipation efficiency of the inversion power unit is further improved.

The liquid cooling typed cooling system includes following parts: heat elimination element with heat elimination division; working fluid circulated inside the cooling system; a condensation division for condensing the working fluid from the heat elimination division; a pump for making circulation of the working fluid; the heat elimination element also includes a thermoelectric conversion division close fitted to the heat elimination division. Being connected to the pump electrically, the thermoelectric conversion division is in use for providing power for the pump. The liquid cooling typed cooling system carries off heat in high efficiency and in time as well as saves energy.

The invention discloses a rapid heat-dissipation device for hardware of a computer. The rapid heat-dissipation device for the hardware of the computer comprises a box, wherein a plurality of heat-dissipation holes are separately formed in the left side surface and the right side surface of the box; the right side of the upper surface of the box is fixedly connected with a first fixing rod; a firstchute is formed in the left side wall of the first fixing rod; the inside of the first chute is slidably connected with a first sliding block; the left side of the upper surface of the box is fixedlyconnected with a second fixing rod; and a second chute is formed in the right side surface of the second fixing rod. The rapid heat-dissipation device for the hardware of the computer is provided with a second driving device and an elastic device, when a second motor in the second driving device works, an output shaft of the second motor rotates reversely to drive a winding plate to rotate, therefore, fan blades can be pulled to rise, when the output shaft of the motor rotates reversely, a traction rope can be unwound by the winding plate, the elastic device can push a supporting plate to descend with the aid of elasticity of the elastic device, therefore, the intensity of heat dissipation can be adjusted according to load conditions of the hardware of the computer, and therefore, peopleuse the computer conveniently.

The invention discloses a UV (ultraviolet) curing machine which comprises a shell (1), a conveying table (2) and a control console (3), wherein the shell (1) is of a hollow box body structure, wherein a material inlet and a material outlet are respectively formed in the bottoms of two ends of the shell; an exhaust fan (4) is arranged at the top of the shell; UV lamps (6) fixed on a lamp support are suspended in the middle of the interior of the shell; the lamp support is fixed on a bracket above the lamp support through adjustment screw rods (5); the conveying table (2) is positioned below the UV lamp; one end of a conveying belt is connected with the material inlet, and the other end of the conveying belt is connected with the material outlet; a rotary drum (8) is arranged on the conveying table at each of the material inlet and the material outlet; the control console (3) is positioned below the conveying table and is of a topless square hollow steel structure; peripheral steel plates are welded with the conveying table (2); a control panel (9) is fixed on the steel plate on one side of the control console; heat dissipation holes (10) are formed close to the bottom of the control console; a speed reduction motor (7) is arranged close to the material inlet and is connected with the rotary drum (8) at the material inlet through the conveying belt.

The invention provides equipment for preventing temperature of a projector projection port from being too high, and relates to the technical field of projectors. Supports are fixedly connected with four corners of the lower surface of a first shell; a base is rotatably connected with the outer surfaces of the supports on the front side of the lower surface of the first shell; a connecting column is rotatably connected with the inner side of the base; a bottom plate is fixedly connected with the lower surface of the base; a limiting plate is fixedly connected with the rear side of the upper surface of the bottom plate; and an elastic supporting rod is slidably connected with the rear surface of the connecting column in a penetrating mode. An air bag is compressed by thrust of the sliding plate; the air bag is deflated; the heat is discharged to the outer surface of a polaroid through a heat absorption pipe, and the polaroid is cooled; the polaroid can be cooled in time while the temperature of the polaroid rises; the effect that the service life of the polaroid is longer is guaranteed; the angle of the projector can be adjusted more conveniently; and the projector can be kept at different angles without the help of other auxiliary tools.

The invention discloses a lithium battery intelligent LED solar street lamp, and belongs to the technical field of street lamps. In the lithium battery intelligent LED solar street lamp, a cooling fan in an LED lamp cap can convey working heat into a lamp rod, so that the timely cooling of the lamp cap is guaranteed, and the service life of the street lamp is prolonged; a cooling pipe B connects a cooling fan with an accumulator accommodating cavity; when the environmental temperature of an accumulator is too low, the cooling pipe B conveys heat generated in LED working into the accumulator accommodating cavity to increase the use environmental temperature of the accumulator, so that the cooling performance of the lamp cap can be guaranteed, the discharge efficiency of the accumulator can be guaranteed, and the heat energy is reasonably used; an electric heating device is arranged in the accommodating cavity; when the heat dissipated in LED working cannot guarantee the use environmental temperature of the accumulator, the electric heating device is used for further heating; and the lithium battery intelligent LED solar street lamp is long in service life of a lithium battery, is high in charge / discharge efficiency, can fully use solar energy, and saves the energy.

The invention discloses a noise-reducing axial flow fan comprising a shell, an impeller is mounted in the shell, multiple unequal sawtooth grooves are formed in the tail of each blade of the impeller, non-equidistant sawteeth cut and comb a large eddy generated at the air outing position to form a plurality of small eddies, viscous air flow at roots of the blades is effectively separated and guided so as to form desired air flow. The axial flow fan is reasonable in structural design, stable in operation, uniform in air supply and stable in placement. An external motor dissipates heat timely by itself without affecting operation, automatic induction and alarm reminding can be performed when the fan is under abnormal actions in operation, and accordingly danger coefficient is lowered; meanwhile, the motor can be powered off automatically, the impeller stops operation immediately, and personal injuries are minimized.

The invention discloses a controlled quantity correction circuit used for a green new energy automobile cooling cycle system. A low-noise amplification circuit carries out frequency-selecting filtering on a voltage signal detected by a temperature sensor, the voltage signal is subjected to two-level low noise amplification, the load capacity of the voltage signal is improved by a follower, and then, the voltage signal enters a signal correction signal; the voltage signal is subjected to differential receiving through a differential amplifier; a differential integrator calculates a negative orpositive voltage change rate which is converted into a positive voltage change rate through an absolute value circuit; a bypass circuit is arranged to filter low voltage; a voltage signal of 0.3-+5V is converted into a square wave signal through a PWM (Pulse-Width Modulation) conversion circuit in a driving signal compensation circuit, a pulse signal is synchronized, a signal output to a trigger U1 from a controller is compensated, and a voltage signal which is higher than +5V triggers a high-voltage trigger circuit to be conducted; a controller output signal is directly compensated through atwo-time frequency multiplier in a driving signal compensation circuit to further change a controlled quantity; and therefore, the cooling cycle and the timely and effective heat dissipation of a heatdissipation pipeline can be realized.