3233results about "Energy efficient lighting" patented technology

The invention discloses an intelligent lamp pole welding device and method based on wind-solar hybrid street lamp production, and relates to the technical field of welding devices. By arranging the welding slag grinding and removing mechanism, the position of the lamp pole can be limited from multiple angles, it is guaranteed that the position of the lamp pole cannot shake, meanwhile, the position of a grinding wheel is limited, it is guaranteed that a flat and smooth plane can be formed in a grinding area, welding slag and burrs can be ground immediately after a welding seam is welded, and the welding quality is improved. Secondary cleaning of a welding seam is not needed; when the partition plate units in the multiple positions are subjected to acting force of the outer wall of the lamp pole, the partition plate units can adaptively ascend and descend according to the acting force of the opposite partition plate units in different positions of the arc-shaped face of the lamp pole, so that the bottom ends of the partition plate units jointly form an outline matched with the arc-shaped face of the lamp pole. Therefore, a relatively closed space can be formed in the polishing area of the lamp post, polishing dust is isolated in the closed space, and the situation of dust splashing is further avoided.

The invention relates to the technical field of welding devices, and particularly discloses a solar frame and lamp pole welding device and method based on solar street lamp machining. Comprising a fixing base, a monitoring mechanism arranged at the top of the fixing base and used for determining the attaching degree of a lamp pole sleeve and a frame body, and a limiting mechanism arranged in linkage with the monitoring mechanism and used for fixing a solar frame. Therefore, the abutting degree of the lamp pole sleeve and the solar frame can be judged conveniently, the situation that welding is unstable due to a gap between the lamp pole sleeve and the solar frame is reduced, the limiting assembly and the monitoring assembly are arranged in a linkage mode, the solar frame can be clamped conveniently, the inner wall of the lamp pole sleeve can be aligned to the center of the solar frame conveniently, and the working efficiency is improved. And therefore, the outer wall and the inner wall of the lamp pole sleeve can be welded before and after subsequent overturning, and the welding stability of the lamp pole sleeve and the solar frame is improved.

A modular, low profiled, scalable, self-powered integrated structure luminaire is coupled electromechanically to a vertical structure that supports a power storage device.

The invention relates to the technical field of lighting devices, in particular to an LED corn lamp with an embedded heat dissipation structure, the LED corn lamp comprises a lamp holder and a lamp shell, a plurality of lamp bodies which are circumferentially distributed at equal intervals are arranged on the outer wall of the lamp holder, each lamp body is formed by linearly arranging a plurality of lamp beads at equal intervals, a heat conduction frame is welded to the outer wall of the lamp shell, and the heat conduction frame is welded to the lamp shell. And a transparent cover is sleeved on the outer side area of the lamp shell, which is positioned on the heat conducting frame. According to the LED lamp, through the arranged first heat dissipation mechanism, after the temperature in the lamp rises, expansion liquid is heated to expand, a first piston drives a second piston to move upwards, and therefore external cold air is sucked into the lamp shell, and the heat dissipation effect is achieved; and the first transmission shaft drives the second transmission shaft to rotate, so that the gear drives the heat dissipation fan to rotate quickly, the effect of blowing air to the outer wall of the lamp shell for heat dissipation is achieved, and the situation that extra electric power is needed for driving heat dissipation is avoided.

The invention is suitable for the technical field of inorganic luminescent materials, and provides a fluorescent powder material based on a double-perovskite structure and a preparation method and application thereof. The general chemical formula of the fluorescent powder is Ca2AlNbO6: xEu < 3 + >, wherein x is a molar fraction of 0.06 to 0.30; the excitation spectrum coverage range of the fluorescent powder under the condition of monitoring the emission wavelength of 615 nm is 260-500 nm, and the emission main peak is located at 615 nm; when x is equal to 0.18, the quantum efficiency under the excitation of 396nm ultraviolet light is greater than or equal to 91%, and the red light emission ratio is greater than or equal to 85%. According to the invention, Ca2AlNbO6 double perovskite is taken as a substrate, and a red fluorescent powder material with wide-spectrum excitation and high quantum efficiency is designed through Eu < 3 + > high-concentration doping and local symmetry regulation and control design engineering, so that the characteristics of high quantum efficiency, efficient red light emission, wide-spectrum excitation and excellent concentration quenching resistance are realized.

The invention discloses a white organic light-emitting device and a display device, the white organic light-emitting device comprises a first electrode, a second electrode and a light-emitting layer located between the first electrode and the second electrode, the light-emitting layer comprises a green light-emitting layer, a blue light-emitting layer and a plurality of red light-emitting layers which are distributed in a stacked mode, the red light-emitting layer is in contact with the green light-emitting layer; along the direction close to the green light-emitting layer, the hole mobility of the red light-emitting layers is gradually reduced, and the electron mobility of the red light-emitting layers is gradually enhanced. The white organic light-emitting device provided by the embodiment of the invention can effectively improve the color cast problem under high current density.

An electrodeless laser-driven light source includes a laser that generates a CW sustaining light. A pump laser generates pump light. A Q-switched laser crystal receives the pump light generated by the pump laser and generates pulsed laser light at an output in response to the generated pump light. A first optical element projects the pulsed laser light along a first axis to a breakdown region in a gas-filled bulb comprising an ionizing gas. A second optical element projects the CW sustaining light along a second axis to a CW plasma region in the gas-filled bulb comprising the ionizing gas. A detector detects plasma light generated by a CW plasma and generates a detection signal at an output. A controller generates control signals that control the pump light to the Q-switched laser crystal so as to extinguish the pulsed laser light within a time delay after the detection signal exceeds a threshold level.

A europium-doped β-sialon phosphor, in which, when the ratio of an aluminum element at a depth of 8 nm from the surface of the phosphor, which is obtained by X-ray photoelectron spectroscopy, is indicated by P8 [at %], and the ratio of an aluminum element at a depth of 80 nm from the surface of the phosphor is indicated by P80 [at %], P8 / P80≤0.9 is satisfied. A light emitting device containing this β-sialon phosphor.

The invention relates to Eu (II) doped double perovskite red fluorescent powder as well as a preparation method and application thereof, and belongs to the technical field of inorganic luminescent materials. According to the red fluorescent powder capable of being excited by the blue light, disclosed by the invention, high-performance red light emission is realized by doping Eu < 2 + > with an oxide Sr2B1-xB 'O6 (wherein B is lutetium (Lu), B' is tantalum (Ta) or niobium (Nb), and x is greater than or equal to 0.01 and less than or equal to 0.10 as a matrix). The novel red fluorescent powder can be applied to white light LED illumination. When the fluorescent powder is used in combination with green light or yellow light fluorescent powder in the prior art, efficient white light is expected to be realized under the excitation of blue light, so that the color rendering performance of a white light LED is absolutely improved.

The invention discloses an indoor intelligent lamp, and belongs to the technical field of lighting devices, the indoor intelligent lamp comprises a lamp holder, a lamp holder is fixedly connected to the lamp holder, a lamp shell is fixedly connected to the bottom of the lamp holder, heat dissipation pieces are mounted in the lamp holder and the lamp shell, and each heat dissipation piece comprises a fan and a convex cylinder; a convex barrel is arranged in the lamp shell, the convex barrel can stretch and retract up and down along the rotating rod, a dust blocking cavity is formed between the convex barrel and the lamp shell, the lower end of a dust sweeping rod can push a positioning insertion strip to penetrate into the bottom of the lamp shell, and an LED bulb is arranged in the lampshade. The LED lamp has the advantages that the service life of the lamp is guaranteed, meanwhile, the situation that the lighting effect of the LED bulb is affected due to the fact that external dust directly enters the lampshade is effectively avoided, the dust blocking effect is achieved, the lighting efficiency of the lamp is guaranteed, dust in the dust blocking cavity can be cleaned, and the heat dissipation efficiency is further guaranteed.

The invention discloses a single-stand-column vertical-axis photovoltaic tracking system of an integrated street lamp and a control method of the single-stand-column vertical-axis photovoltaic tracking system, and belongs to the field of solar photovoltaic power generation technologies and smart city infrastructures. Comprising a rotatable photovoltaic module support structure installed on a single stand column, an LED street lamp lighting device, a transmission mechanism based on a stepping motor, an orientation detection module integrated with a magnetic sensor and a gyroscope, an embedded tracking control system, an energy management system and a cloud platform management system. High-precision sun tracking is realized through closed-loop control of astronomical algorithm and sensor fusion, and functions of automatic north finding and motor out-of-step correction are realized; the system safety is improved by adopting a dual-threshold control regionalization cooperation gale protection strategy; high-capacity photovoltaic and street lamp functions are integrated to guarantee all-weather illumination. The distributed photovoltaic application scene is expanded, the service life of the system is prolonged, the problem that a traditional solar street lamp is low in lighting rate is solved, and the multifunctional and intensive development requirements of smart city infrastructures are met.

The high-stability multi-cavity liquid-cooled street lamp comprises a shell, a lighting unit is arranged in the shell, a heat absorption assembly is arranged at the position corresponding to the lighting unit, and a first cavity and a second cavity are formed in the heat absorption assembly; a mounting base is further arranged in the shell, and a cooling box filled with cooling liquid, a liquid pumping mechanism arranged between the cooling box and the heat absorption assembly and a switching mechanism in transmission connection with the liquid pumping mechanism are arranged on the mounting base; the lighting unit has a low-power mode and a high-power mode; in the low-power mode, the switching mechanism enables the cooling liquid to circulate between the first cavity and the cooling box; in a high-power mode, the switching mechanism enables the cooling liquid to circulate among the first cavity, the second cavity and the cooling box; heat dissipation is matched with the working mode of the street lamp, heat is effectively dissipated in time, energy consumption is reduced, the stable performance of the street lamp is improved, and the service life of the street lamp is prolonged.

The invention relates to a red fluorescent material excited by blue light, an LED device and fluorescent ceramic. The chemical formula of the red fluorescent material is La (2-x) MgNbO6.5: xEu < 3 + >, wherein x is more than or equal to 0.01 and less than or equal to 0.1. The preparation method comprises the following steps: weighing lanthanum oxide, magnesium oxide, niobium oxide and europium oxide raw materials according to a stoichiometric ratio, grinding and uniformly mixing; sintering the uniformly mixed powder in a muffle furnace at high temperature, and cooling to room temperature to obtain the red fluorescent material. Compared with the prior art, the novel oxide-based red fluorescent powder prepared by the invention can emit positive red light of which the central wavelength is 616nm under the excitation of 465nm blue light, and can be used for white light LED (Light Emitting Diode) luminescent devices and fluorescent ceramics.

The invention relates to the technical field of street lamps, in particular to a solar intelligent street lamp which comprises a lamp pole, a lamp holder fixedly connected to the upper portion of the outer surface of the lamp pole, an LED lamp set fixedly connected to the end of the lamp holder, a mounting frame arranged at the top end of the lamp pole, a solar panel arranged on the upper portion of the mounting frame, and an ablation assembly arranged in the middle of the mounting frame. A driving assembly is arranged on the outer surface of the lamp holder, and a conversion assembly is arranged in the lamp holder. Compared with the prior art, the melting assembly is arranged at the connecting position of the solar panel, the rotating disc and the push rod are driven by the motor to do circular motion, then the frame-shaped plate and a connecting structure of the frame-shaped plate are driven to do linear reciprocating motion, and accumulated snow can be cleaned in the moving process of the cleaning plate; the inside and the outside of the friction cylinder are in friction with the friction rod and the arc-shaped plate respectively, heat generated by friction can be transmitted to the surface of the solar panel, a thin ice layer formed on the surface of the solar panel is melted, and the melting speed of thin ice on the surface of the solar panel is increased.

The invention discloses a maintenance method and system of a solar power generation street lamp, and relates to the maintenance method and system of the solar power generation street lamp. The method comprises the following steps: acquiring detection data of each solar power generation street lamp in a target area within a preset duration and environmental data of the target area; judging whether the solar power generation street lamps in the target area are in a shielding state or not based on the detection data and the environmental data, wherein the shielding state is used for representing the shielding degree of the solar power generation street lamps by trees in the target area; and if it is determined that the solar power generation street lamp in the target area is in the shielding state, generating a maintenance suggestion corresponding to the shielding state. By implementing the technical scheme provided by the invention, the maintenance suggestion corresponding to the shielding state can be automatically generated, so that the maintenance personnel can reasonably plan the maintenance work, the maintenance efficiency is improved, and the waste of maintenance resources is avoided.

The invention belongs to the technical field of preparation of fluorescent powder, and particularly relates to double-shell narrow-band red-light fluorescent powder as well as a preparation method and application thereof. The narrow-band red-light fluorescent powder is Mn < 4 + >-doped potassium fluosilicate fluorescent powder, and the narrow-band red-light fluorescent powder is coated with a potassium fluosilicate inner shell layer and a cystine outer shell layer. The preparation method comprises the following steps: mixing a cysteine solution with the narrow-band red-light fluorescent powder, stirring, centrifuging, and drying the precipitate obtained by centrifuging to obtain the double-shell narrow-band red-light fluorescent powder. The surface of the prepared fluorescent powder is provided with the Mn < 4 + >-free potassium fluosilicate inner shell layer and the outer hydrophobic cystine layer, the surface of the core narrow-band red-light fluorescent powder is covered with the double-shell structure, the water resistance and the light-emitting characteristic of the narrow-band red-light fluorescent powder can be remarkably improved, and the wide application prospect is achieved.

The invention discloses a multi-layer insulation space power equipment pile head warning lamp capable of being installed without power outage and an installation method, and aims to solve the problems that an existing insulation protective cover is fast in aging, poor in insulation, not firm in fixation and incapable of being installed without power outage, and the multi-layer insulation space power equipment pile head warning lamp comprises a cover body, a left sliding block, a right sliding block and two sets of turnover type locking mechanisms. According to the cover body, an inner layer plate, an outer layer plate and a connecting plate form a double-layer structure, a left sliding way and a right sliding way are formed, a sliding block adopts a double-layer insulation design and is matched with a one-way ratchet structure to achieve self-locking, two sets of overturning type locking mechanisms complete mechanical locking of a notch, a pressing rod is driven to operate through an insulating rod during installation, power failure is not needed, and installation is convenient. Fixing is completed through the three steps of positioning, locking and sliding block closing, the protective cover is arranged in a suspended mode, the insulation distance is increased, insulation is stable, wind resistance is high, aging is slow, warning can be achieved, and the protective cover is suitable for protection of various power equipment heads and excellent in practicability.

The invention discloses a solid-state microwave source plasma light source modulation method and system, the advantage that a solid-state microwave source is easy to control at low voltage is utilized, a frequency spectrum range with a certain width is broadened towards two sides by taking a working frequency as a center, and when a microwave light source emits light, the frequency point of the actual working frequency is within the frequency spectrum range broadened by the central frequency point. High-frequency oscillation is generated in a certain period, so that a frequency point is continuously changed; in the starting stage of the microwave plasma light source, under the condition of spectrum broadening, a continuous wave working mode is used. In a stable arc discharge stage and when heat balance is achieved, pulse power modulation waveforms with a certain duty ratio are superposed while spectrum broadening is carried out, and electromagnetic radiation is reduced and the luminous efficiency of the microwave light source is improved under the condition of equal input electric power by changing the duty ratio and the modulation frequency.

An object of one embodiment of the present invention is to provide a multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance, a separation layer containing a substance having a hole-transport property and a substance having an electron-transport property, and a second light-emitting layer containing two kinds of organic compounds that form an exciplex and a substance that can convert triplet excitation energy into luminescence. Note that a light-emitting element in which light emitted from the first light-emitting layer has an emission spectrum peak on the shorter wavelength side than an emission spectrum peak of the second light-emitting layer is more effective.

The invention provides a preparation method of a perovskite cyan light illuminant film and a white light emitting diode, the light emitting surface of the white light emitting diode is provided with the perovskite cyan light illuminant film, and the perovskite cyan light illuminant film can reduce the color temperature of the white light emitting diode. The color rendering index of the white light emitting diode is improved; the perovskite blue light illuminant film absorbs blue light which is emitted by the white light emitting diode and has a wavelength less than 455nm, and compensates for the deficiency of blue light with a wavelength range of 470-520nm; the chemical formula of the cyan light illuminant is CsPb (BrCl) 3: Ba; wherein Ba is a doped barium ion. According to the perovskite blue light illuminant film, the color rendering index of a WLED is improved, and meanwhile blue light emitted by an LED chip is absorbed, so that harm to a human body is reduced.

The present invention discloses a street lamp fixture based on energy-saving control of LED street lamps, and relates to the technical field of street lamp fixtures, including a street lamp base, a lamp pole frame fixedly connected to the top of the street lamp base, a connection cover fixedly connected to both ends of the lamp pole frame, and a street lamp body fixedly connected to the bottom end of the connection cover, a pair of connection covers fixedly connected to the inside of each of the two connection covers, a reflective mechanism fixedly connected to the top of the lamp pole frame, and a pair of photovoltaic modules fixedly connected to the top of the top plate, a cleaning mechanism is provided between the top of the top plate and the top of the pair of photovoltaic modules, and a fog concentration detection sensor is provided on one side of the lamp pole frame. The present invention can form a V-shape by pushing the reflective film through the deformation of the deformation memory telescopic rod, and use the two inclined surfaces of the V-shaped reflective film to reflect the divergent light multiple times, so as to make the divergent light go downward again and gather with the lighting light, thereby enhancing the light intensity and reducing the dispersion of light.

A light-emitting traffic cone includes: a cone body, having a hollow space; a base, connected to the cone body; and a light-emitting assembly, disposed on the base, the light-emitting assembly at least including a light-emitting body and a power supply, the light-emitting body being electrically connected to the power supply, and the light-emitting body being disposed at a position corresponding to the hollow space so that light emitted by the light-emitting body can irradiate into the hollow space. The light-emitting traffic cone can improve a warning effect.

The invention relates to the technical field of urban lighting, in particular to an LED municipal street lamp with a photovoltaic panel assembly. An LED municipal street lamp with a photovoltaic panel assembly comprises a base, a lamp post and a lamp body, the lamp post is fixedly connected to the top of the base, the lamp body is fixedly installed on the upper portion of the lamp post, the LED municipal street lamp further comprises an electric push rod, a push rod, a lifting rod, the photovoltaic panel and the like, the electric push rod is rotatably installed in the lamp post, and the push rod is fixedly connected to the push rod of the electric push rod. The top of the lifting rod is fixedly connected with a photovoltaic panel. Solar energy is converted into electric energy through the photovoltaic panel, the electric energy is stored in the storage battery, power is supplied to the street lamp, dependence on traditional energy is reduced, the new energy utilization rate is increased, under the combined use of the electric push rod and the servo motor, the photovoltaic panel can be adjusted in height and angle according to the environment conditions (such as tree shielding), and the street lamp is more convenient to use. The photovoltaic panel can receive sunlight to the maximum extent, and the efficient power generation effect is maintained.

The invention discloses 1, 2-dibromo-6-tert-butyl-9-(4-tert-butylphenyl)-9H-carbazole and a synthesis method of the 1, 2-dibromo-6-tert-butyl-9-(4-tert-butylphenyl) The method comprises the following steps: taking 3-nitrophthalic acid as an initial raw material, reacting trichloroisocyanuric acid with liquid bromine to obtain 1, 2-dibromo-3-nitrobenzene, reducing by stannous chloride to obtain 2, 3-dibromoaniline, carrying out diazotization reaction to obtain 2, 3-dibromophenylhydrazine, reacting with p-tert-butyl cyclohexanone, and reacting by using 2, 3-dichloro-5, 6-dibromophenylhydrazine to obtain 2, 3-dibromophenylhydrazine. The preparation method comprises the following steps: carrying out dehydrogenation on 2, 6-dicyanobenzoquinone to obtain 1, 2-dibromo-6-tert-butyl-9H-carbazole, and finally reacting the 1, 2-dibromo-6-tert-butyl-9H-carbazole with 4-tert-butyl iodobenzene to obtain the 1, 2-dibromo-6-tert-butyl-9-(4-tert-butylphenyl)-9H-carbazole. Due to the existence of a bromine atom functional group on the 1, 2-dibromo-6-tert-butyl-9-(4-tert-butylphenyl)-9H-carbazole, the further conversion of the compound has expandability, and the compound can be used as a material / drug molecule precursor in the fields of organic light-emitting semiconductors, pharmaceutical chemistry and the like.

The present application provides an automatic focusing method for a fluorescence imaging device, including: S1, obtain a relationship function curve Z-Fv; S2, Gaussian fitting is performed on the relationship function curve Z-Fv, to obtain a standard Gaussian function f(x); S3, the object lens is arranged at three different travel coordinates, to obtain three groups of coordinate-clarity data (Z, Fv); S4, any two groups of the data are taken from the three groups of the coordinate-clarity data (Z, Fv) obtained in S3 and perform the Gaussian fitting with a standard deviation σ, to obtain a Gaussian function f1(x); and S5, an average value μ1 of the Gaussian function f1(x) is calculated, as a preferred travel coordinate Z′ for this time of the focusing object lens. The present application solves problems of large focusing clarity error and slow focusing speed of the fluorescence imaging device in existing technologies.

The invention provides europium-doped silicate green fluorescent powder as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. The green fluorescent powder can generate narrow-spectrum green light with the peak value located at 532 nm under excitation of 450 nm blue light, the full width at half maximum is 46 nm, a white light LED device prepared based on the fluorescent powder has a 110% NTSC color gamut, and it is indicated that the green fluorescent powder has excellent application value in backlight display. The saturation threshold value of the fluorescent powder reaches 21.6 W / mm < 2 > under the excitation of 450nm blue laser, and the lumen at the moment reaches 1157.9 lm. The green fluorescent powder disclosed by the invention has the advantages of high luminous efficiency, narrow full width at half maximum, high light saturation threshold under blue laser excitation, high lumen efficiency and the like, and has application feasibility in the aspect of laser display.

The invention belongs to the field of novel display material quantum dot materials, and discloses a carbon dot with a dark blue light emission characteristic, and a preparation method and application thereof. The preparation method comprises the following steps: (1) weighing perylene and PTCDA or perylene and propylene diamine as reaction precursors according to a molar ratio of perylene to PTCDA / propylene diamine of (1-5): 1; (2) adding an ethanol-sulfuric acid solution or DMF (Dimethyl Formamide) into the reaction precursor, and carrying out solvothermal reaction in a hydrothermal reaction kettle; and (3) after the solvothermal reaction is completed, filtering, centrifuging and dialyzing the reaction solution, and finally drying to obtain the carbon dots. The carbon dot with the dark blue light emission characteristic is applied to a dark blue light electroluminescent diode. The carbon dots developed by the invention have a dark blue light emission characteristic (the emission peak value is less than or equal to 465 nm), can be applied to dark blue light-emitting diodes, have a wide application prospect, are simple in preparation process and low in cost, and are a convenient and environment-friendly method for synthesizing the carbon dots on a large scale.

The invention belongs to the technical field of lighting equipment, and discloses solar lighting equipment capable of improving the heat dissipation effect, the solar lighting equipment comprises a lamp pole, a connecting rod is mounted on one side of the outer wall of the lamp pole, a shell is fixedly connected to the side, away from the lamp pole, of the connecting rod, and an output rod I is arranged at the top of the shell; the end, away from the lamp pole, of the first output rod is fixedly connected with a first rotating shaft, and the interior of the top of the lamp pole is rotationally connected with the first rotating shaft. During use, hot air exists in the shell, fan blades rotate through flowing of air, the fan blades can drive the first rotating shaft and a first bevel gear to rotate, and the first bevel gear can be meshed with a second bevel gear when rotating; and when the second output rod rotates, an exhaust fan can be driven to rotate to discharge hot air in the shell into an exhaust box, then the hot air can be discharged through a filter screen, and the situation that due to the fact that lamp beads in the shell are in a working state for a long time, the temperature of the shell rises gradually, and the service life of the street lamp is shortened is avoided.

The application belongs to the technical field of fluorescent material synthesis, and particularly relates to a blue fluorescent powder with self-activation effect and a preparation method thereof, the chemical formula of the blue fluorescent powder is Li2Mg2W2O9 or Li2Zn2W2O9; the preparation comprises the following steps: 1) according to the chemical proportion of the fluorescent powder, magnesium / zinc source, lithium source and tungsten source are weighed and uniformly ground; 2) the uniformly ground mixed powder is placed into an alumina crucible, sintering is carried out, and the product is fully reacted after heat preservation for a period of time; 3) the product is uniformly ground again after cooling, and the blue fluorescent powder with self-activation effect is obtained. The application utilizes the special lattice structure of the substrate, and obtains the blue fluorescent powder with self-activation effect under an air atmosphere; the generated product has high purity, simple synthesis conditions, low cost and is easy to be prepared on a large scale; the prepared fluorescent powder has a high internal quantum efficiency of 68.7%, high luminous intensity and unique blue light emission characteristics.

The invention belongs to the field of fluorescent materials. The invention provides a spray drying preparation method of colorful fluorescent powder. The spray drying preparation method comprises the following steps: (1) preparing colorful carbon quantum dots; (2) preparing a colorful carbon quantum dot solution; (3) dialyzing the colorful carbon quantum dot solution in the step (2) by using a dialysis bag, or mixing the colorful carbon quantum dot solution with a carrier solution to obtain a mixed solution; and (4) preparing the colorful fluorescent powder: setting parameters of a spray drying device, sucking the mixed solution in the step (3) into the spray drying device at a constant speed through a rubber tube under magnetic stirring for spray drying, and collecting a solid powder product which is the colorful fluorescent powder. The invention also provides the colorful fluorescent powder. The invention also provides application of the colorful fluorescent powder. The colorful fluorescent powder is used for preparing display devices, laser illumination, LED illumination or noctilucent materials. The preparation and synthesis method of the fluorescent powder is simple, the reaction repeatability is high, and production can be expanded.