1115results about "Energy efficient lighting" patented technology

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 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 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 application belongs to the technical field of intelligent electronic devices, and particularly relates to a high-color-purity multi-color electroluminescent fiber and a preparation method and application thereof. The fiber is prepared by the following steps: preparing lead halide perovskite type nano quantum dots as light conversion particles by a hot injection method, a room temperature supersaturation recrystallization method and the like; grafting and modifying the lead halide perovskite type nano quantum dots on the surface of metal sulfide type electroluminescent particles through a surface ligand to obtain high-color-purity multi-color electroluminescent active material; compounding the light conversion particle modified electroluminescent active material and a transparent thermoplastic elastomer polymer to obtain active slurry, and coating the active slurry on the surface of a conductive fiber through a continuous limited coating process; loading an external electrode on the conductive fiber to obtain the high-color-purity multi-color electroluminescent fiber. The multi-color electroluminescent fiber prepared by the application has various colors and high color purity, and meets the color gamut range required by the luminescent fiber and display fabric.

The present invention discloses an angle-adjustable solar street lamp, which relates to the technical field of solar street lamp equipment. The invention comprises a base and an adjustment device, wherein a hollow lamp holder is fixedly mounted on the top of the base, a lamp pole is rotatably mounted on the inner wall of the hollow lamp holder, a lamp body is fixedly mounted on the circumferential surface of the lamp holder, a support disk is fixedly mounted on the circumferential surface of the lamp holder, a solar panel is fixedly mounted on the top of the support disk, a support block is fixedly mounted on the surface of the hollow lamp holder, and a protective umbrella is slidably mounted on the surface of the hollow lamp holder. After the limit of the lamp holder is released, the lamp holder is manually rotated to rotate, and the rotation of the lamp holder drives the support disk and the lamp body to rotate. The rotation of the support disk drives the solar panel to rotate to adjust the angle of the solar panel. By arranging a U-shaped rod to prevent personnel from adjusting incorrectly, the solar panel can always be maintained at the optimal angle, ensuring maximum light energy absorption, improving battery charging efficiency and lighting time of the lamp body.

The invention provides a preparation method of a red light perovskite quantum dot with a core-shell structure, and belongs to the technical field of quantum dot preparation. According to the method, a CsPbI3 quantum dot coarse solution and a cadmium sulfide precursor solution are mixed, stirred and heated to a certain temperature, cadmium sulfide grows on the surface of the quantum dot in an epitaxial mode, the red light CsPbI3 / CdS core-shell quantum dot is prepared, the formation of a core-shell structure is beneficial to passivation of defects on the surface of the quantum dot, and meanwhile ion migration and Auger recombination of the quantum dot are inhibited. The invention provides a solution for preparing the red light perovskite quantum dot light-emitting diode with high external quantum efficiency, long service life and low efficiency roll-off.

The invention belongs to the technical field of light-emitting hybrid materials, and particularly discloses a preparation method and application of an efficient blue light emitting hybrid material. The preparation method comprises the following steps: dispersing cuprous halide, triphenylphosphine (tpp) and tetraethylammonium halide in N, N-dimethylformamide (DMF) according to a molar ratio of 1: 1: 1 to form a uniform solution, and performing ultrasonic treatment at room temperature to generate luminescent powder; and washing, centrifuging and drying in vacuum to obtain the hybrid material. The highest photoluminescence quantum yield is up to 70%, and the luminescence mechanism is thermally activated delayed fluorescence. The material can be used for a white light LED (CIE coordinate (0.33, 0.33)) and an X-ray scintillator (the light yield is 32537 photons / MeV, and the spatial resolution is 20lpmm <-1 >), and has the characteristics of simple preparation and excellent performance.

The invention relates to the technical field of highway lighting, and particularly discloses a photovoltaic lighting structure for a central isolation strip of an expressway, the photovoltaic lighting structure comprises a plurality of foundation columns fixedly mounted on a highway pavement and a plurality of wave baffles mounted on the foundation columns, and a plurality of light holes are formed in the wave baffles; the lighting mechanism is arranged on the outer side of the outer wall, close to one side of the foundation column, in the wave baffle; the power mechanism is arranged in the middle of the road and can receive airflow flowing power generated when the two-way traffic flow passes through, convert the airflow flowing power and transmit the airflow flowing power to the lighting mechanism. The photovoltaic mechanism is arranged between the power mechanism and the lighting mechanism and used for providing electric energy for the lighting mechanism. The light-transmitting pieces can correspond to the light-transmitting holes in position, light of the lighting mechanism penetrates through the light-transmitting pieces to be projected on the road surface, and a plurality of warning irradiation areas with different distances from the wave baffle are formed. According to the invention, an integrated photovoltaic illumination structure with autonomous energy supply, anti-dazzle and accurate projection warning is realized.

Provided is a method of efficiently producing semiconductor nanoparticles that exhibit band-edge emission with a high band-edge emission purity. The method comprises performing a first heat treatment of a first mixture comprising a silver (Ag) salt, an indium (In) salt, a compound having a gallium-sulfur (Ga—S) bond, a first gallium halide, and an organic solvent, to obtain first semiconductor nanoparticles.

The invention provides a resonance control method for an excimer lamp driven by a steep pulse edge, and relates to the technical field of molecular lamps. The resonance control method of the excimer lamp driven by the steep pulse edge comprises the following steps: S1, based on a dielectric barrier discharge equivalent circuit model, adopting a fast Fourier transform spectrum analysis method, measuring fundamental wave impedance characteristics of an LC resonance network through an impedance analyzer, establishing a transfer function containing parasitic parameters: Z (s) = [sLr + 1 / (sCr)] Rarc, and generating an initial resonance parameter set; by establishing a transfer function model containing parasitic parameters, combining fast Fourier transform spectrum analysis and accurately extracting fundamental wave impedance characteristics, the problem of resonance point offset caused by neglecting the parasitic parameters in a traditional method is solved, the precision of an initial resonance parameter set is improved, real-time phase difference data are identified on line by using a recursive least square method, and the real-time phase difference is obtained. Resonant frequency changes are dynamically tracked, frequency drift errors are compensated, resonance point tracking precision is controlled within + / -0.1%, and invalid discharge energy loss is remarkably reduced.

The application provides a manganese-activated antimony acid-based fluorescent powder and a preparation method and application thereof, and relates to the technical field of luminescent materials. 1‑ x Y x )3Li5Sb 2‑y O 12 :yMn, and 0 < x <= 0.3, 0.001 <= y <= 0.01. 3+ The Y 3+ can improve the luminous efficiency and thermal stability of the fluorescent powder, and the fluorescent powder can emit red fluorescence with a wave band of 650nm-770nm under near-ultraviolet light and blue light excitation.

The invention is applicable to the technical field of photoelectricity, and provides a single-matrix white-light rare earth lead-free perovskite nanocrystal, a preparation method and application, and the single-matrix white-light rare earth lead-free perovskite nanocrystal is Eu < 3 + > ion doped Cs3TbCl6 nanocrystal. The rare earth ion Eu < 3 + > is doped into the Cs3TbCl6 nanocrystal, full-spectrum white light emission of blue light (matrix self-limiting state exciton emission), green light (Tb < 3 + > ion emission) and red light (Eu < 3 + > ion emission) is obtained, excellent thermal stability and environmental stability are achieved, and the nanocrystal material also shows excitation light dependent color adjustable emission (blue light, green light, red light and white light) and has good application prospects. The nanocrystal prepared based on a solution method can be applied to large-area flexible photoelectric devices; the fluorescent conversion layer can be used as a fluorescent conversion layer of a white light emitting diode with a high color rendering index, and can also be applied to anti-counterfeiting and information encryption.

This invention belongs to the field of luminescent materials technology, and discloses a green phosphor, its preparation method, and its application. The green phosphor has the chemical formula CaY. 1‑x GaO4:xCe 3+ Wherein, 0.02 ≤ x ≤ 0.2. The green phosphor of this invention, due to its specific composition, can be used not only in non-contact optical temperature measurement but also in indoor lighting. When applied to optical temperature measurement, it offers advantages such as rapid response, high resolution, high sensitivity, high temperature resistance, and no need for direct contact with objects. Furthermore, when mixed with blue LED chips and commercially available red phosphor, it can be used as a warm white LED device, which features low cost, stable performance, and good luminous effect.

The invention relates to the field of luminescent carbon nanomaterials, in particular to a water-soluble carbon dot-based afterglow luminescent material based on a multi-carboxyl carbon source and a preparation method of the water-soluble carbon dot-based afterglow luminescent material. The preparation method comprises the following steps: step 1, uniformly mixing a Y (CH3CO2) 3 solution, oleic acid and 1-octadecene according to a formula ratio; 2, heating to 120-160 DEG C, reacting for 20-50 minutes, then cooling to 40-60 DEG C, preserving heat, and adding a NaOH methanol solution and an NH4F methanol solution; step 3, adding organic acid, wherein the organic acid contains at least two carboxyl groups; and 4, heating to 90-120 DEG C, vacuumizing, then heating to 280-320 DEG C, reacting for 1-3 hours in a nitrogen atmosphere, naturally cooling to room temperature, and carrying out post-treatment to obtain the water-soluble CDs (at) NaYF4 composite material. According to the preparation method, the water-soluble carbon dot-based afterglow luminescent material based on the multi-carboxyl carbon source, which is stable in structure and good in dispersity, can be prepared, and the water-soluble carbon dot-based afterglow luminescent material has the advantages of long service life and wide application range.

The invention relates to the technical field of street lamp use, in particular to a liftable rod arm multi-scene application street lamp pole device and an operation method thereof. The liftable rod arm multi-scene application street lamp pole device comprises a lamp pole base, a lifting connecting rod is slidably arranged in the lamp pole base in the height direction of the lamp pole base, and a lamp is installed on the lifting connecting rod; a power generation mechanism which changes in a self-adaptive mode and is electrically connected with the lamp is installed on the lifting connecting rod. Aiming at solar altitude change caused by season change, the adjusting disc is rotated to drive the solar panel to synchronously perform angle deflection around the lifting connecting rod. The process can correct the included angle between the solar panel and the sunlight in real time, effectively reduce the deviation degree of the two, ensure that the solar panel can be always aligned with the sun trajectory in different seasons of spring, summer, autumn and winter, and capture the illumination energy to the maximum extent.

The invention relates to the technical field of lamp poles, in particular to an inclination-angle-adjustable energy-saving lamp pole which comprises a lamp pole body, a base is installed at the bottom end of the lamp pole body, the lamp pole body is slidably sleeved with a barrel, and the surface of the outer wall of the barrel is connected with a street lamp supporting rod and a photovoltaic panel supporting rod; a control panel and a lifting assembly are arranged in the control cavity, and a traction rope of the lifting assembly extends to the top of the lamp pole and is fixedly connected with the barrel after being guided by the guide box. A guide groove is formed in the outer wall of the lamp pole in the axial direction, and a plurality of feeler levers are arranged in the guide groove in the length direction at intervals. The cylinder adopts a hollow structure and is internally provided with a clamping and stopping mechanism; when the barrel normally and slowly descends, the swing rod assemblies make contact with the adjacent feeler levers in sequence and smoothly pass through the barrel, and when the barrel rapidly descends due to faults, the feeler levers and the clamping and stopping mechanism mechanically interfere with each other and are locked. The push rod fixing assembly triggers a multi-point friction enclasping mechanism to achieve energy dissipation of the barrel, the buffering assembly effectively dissipates energy through connection mode conversion and elastic energy storage friction energy dissipation, and the probability of damage to falling equipment is reduced.

The invention relates to a purple light-excited cyan light-emitting fluorescent material as well as a preparation method and application thereof. The cyan light emitting fluorescent material is a Ce < 3 + > doped oxide cyan light emitting fluorescent material, the chemical expression of the cyan light emitting fluorescent material is SrCa0. 7Mg0. 3Lu4-xO8: xCe < 3 + >, and x is more than or equal to 0.003 and less than or equal to 0.05. The preparation method comprises the following steps: weighing a strontium source compound, a calcium source compound, a magnesium source compound, a lutetium source compound and a cerium source compound according to a stoichiometric ratio of a chemical expression of the green light emitting fluorescent material, grinding and uniformly mixing to obtain a mixture; sintering the mixture at high temperature, and cooling to obtain the purple light excited cyan fluorescent material. Compared with the prior art, the method has the advantages of optimizing the crystal field environment, constructing a cyan fluorescent material with wide-spectrum excitation characteristic, high luminous efficiency and excellent thermal stability and the like.

Provided is a phosphor powder in which the balance of suitability, brightness, and excitation light blocking properties of a complex obtained from the phosphor powder with respect to a small-sized light-emitting device is improved. A phosphor powder containing SCASN phosphor particles, the phosphor powder having a volume-based median diameter (D50) of 0.1 [mu] m to 5.0 [mu] m (inclusive) as determined by a laser diffraction scattering method, and a peak wavelength of a fluorescence spectrum measured by a spectrophotometer when the phosphor powder is irradiated with light having a wavelength of 455 nm of 590.0 nm to 630.0 nm (inclusive), the absorption rate when the phosphor powder is irradiated with light having a wavelength of 455 nm is 80.0% or more.

In an X-ray photoelectron spectrum obtained using Al-Kα radiation as an excitation X-ray source, this β-sialon phosphor satisfies the relationship 2.5>Y / X, where X is the photoelectron intensity at a binding energy of 103.5 eV and Y is the photoelectron intensity at a binding energy of 102.0 eV.

The invention belongs to the technical field of fluorescent polymer materials, and particularly discloses bifuran polyamide with high quantum yield and capable of emitting yellow-green wavelength light as well as a preparation method and application of the bifuran polyamide. The method comprises the following steps: dissolving a bifuranoyl chloride monomer in an organic solvent to obtain an organic phase; adding an alkaline aqueous solution into the organic phase to form a phase interface, then adding a diamine monomer, and stirring to carry out an interfacial polymerization reaction; and after the reaction is finished, filtering, precipitating, washing and drying to obtain the bifuran polyamide. The bifuran polyamide is prepared by regulating and controlling the main chain structure and chain rigidity and flexibility of the polymer through a diamine monomer with a specific molecular structure, the emission wavelength of the amorphous bifuran polyamide can reach 540-552 nm under exciting light of 480 nm, red shift is performed to 565-568 nm after crystallization, long-wavelength yellow-green light emission, high-quantum-yield light emission and good biocompatibility are achieved, and the bifuran polyamide can be applied to the field of organic light emitting devices, such as organic light emitting devices, organic light emitting devices, organic light emitting devices, organic light emitting devices, organic light emitting devices, organic light emitting devices, organic light emitting devices and the like. The application of the bio-based polyamide in the field of biological imaging is expanded.

The solar street lamp comprises a lamp pole, a through hole is formed in the lower end of the lamp pole, an installation mechanism is arranged at the bottom of the lamp pole, a base plate is arranged at the bottom of the installation mechanism, an embedded screw rod is arranged in the through hole and connected with the installation mechanism, and the lower end of the embedded screw rod penetrates through the base plate through the through hole. A lamp holder is arranged at the upper end of one side of the lamp pole through a supporting mechanism, a lighting lamp is arranged at the end, away from the lamp pole, of the lamp holder, an upper traction plate is arranged at the top of the lamp holder, the bottom of the upper end of the upper traction plate is fixed to the top of the lamp pole through a connecting mechanism, a solar cell panel is arranged at the top of the upper traction plate, and a control box is arranged at the top of the supporting mechanism. By arranging a series of structures, the supporting strength and the wind resistance stability of the lamp holder structure are improved through the lamp holder supporting and bearing installation, the bearing support of the triangular structure below the lamp holder and the traction support of the triangular structure above the lamp holder, and the firmness and the wind resistance of lamp post installation are improved through the embedded screws.

The utility model relates to the technical field of sound barriers, in particular to a photovoltaic street lamp and sound barrier integrated structure which comprises a support, a plurality of stand columns, purlines and partition plates, the stand columns are evenly arranged, the purlines are connected between the tops of every two adjacent stand columns, and the partition plates are connected between the bottoms of every two adjacent stand columns. The barrier mechanism comprises a barrier plate and a barrier support connected with the stand columns and used for fixing the barrier plate. The lamp mechanism comprises a lamp pole connected with one end of the stand column and a lamp assembly connected with the other end of the stand column. And the photovoltaic panel is fixedly connected with the purline. The photovoltaic panel, the lamp mechanism and the barrier mechanism are integrated, the photovoltaic panel is fixedly connected with the purline, the street lamp is installed on the stand column, and the barrier support and the stand column fix the barrier plate, so that the complexity that the photovoltaic street lamp and the sound barrier are installed separately is simplified, and the trouble that spaces are reserved for the street lamp and the sound barrier separately is avoided; the design and construction efficiency is effectively improved, and a more appropriate solution is provided for application in a space-limited area.

This utility model discloses a plug-in type solar-powered multifunctional courtyard light pole, including a light pole body and a lighting fixture. The light pole body has mounting positions arranged in a circular array around its perimeter, and solar panels are plugged into these positions via a plug-in structure to accommodate multi-faceted lighting at different times of day. The lighting fixture is mounted on top of the light pole body via a connecting flange, providing nighttime illumination. This utility model concentrates solar panels onto the light pole in a plug-in manner, adapting to multi-faceted lighting at different times of day, enhancing photoelectric conversion efficiency, and is suitable for urban secondary roads, park trails, residential areas, campuses, etc.

According to an embodiment of the present application, provided is a method for controlling a plurality of street lights through a first control operation based on the travel speed of a moving object and a second control operation based on traffic volume. The first control operation in the method comprises: a step in which a first street light detects at least one moving object that approaches within a predetermined detection range and the travel speed of the moving object; a step in which a lighting area size and a lighting duration in the travel direction of the moving object are determined from the first street light according to the detected speed of the moving object; a step in which a lighting activation signal is transmitted to one or more second street lights, successively arranged spaced apart from the first street light in the travel direction, according to the determined size of the lighting area; and a step in which the second street light is lit by controlling the brightness of the second street lights and the lighting duration on the basis of the lighting activation signal. The second control operation in the method comprises: a step in which the first street light detects the number of moving objects traveling in a predetermined travel section on the basis of a wireless communication connection; a step in which the current traffic volume of the travel section is determined according to the number of moving objects; and a step in which, when the current traffic volume is equal to or greater than a predetermined reference value, the first control operation is stopped for a plurality of third street lights in the travel section including the first street light, and the third street lights are kept lit at a constant brightness.

The utility model provides a solar street lamp with an adjustable irradiation angle, which comprises a street lamp frame assembly, and the street lamp frame assembly comprises a lamp post, a lifting rack and a solar panel. An angle adjusting wheel rotates to drive an angle adjusting belt to rotate forwards and backwards, then an angle adjusting rotating shaft is driven to rotate in a rotating groove, the effect of driving angle adjustment of the street lamp body is achieved, a lifting gear is made to complete lifting adjustment along a lifting rack to assist angle adjustment of the street lamp body, and therefore the effect of adjusting the irradiation angle can be achieved; the street lamp frame assembly and the street lamp base assembly are additionally arranged, the outer side of a lifting base is shielded by an organ cover and ascends and retracts along with a lantern ring, the outer end of an angle adjusting wheel is covered by a housing, an angle adjusting belt is guided and conveyed through a sealing ring, and therefore the service life of parts can be prolonged.

The utility model discloses a dual-system controlled photovoltaic illuminating lamp which comprises an outer frame, a solar cell panel is arranged in the outer frame, a metal plate bottom shell is arranged at the bottom of the solar cell panel, the metal plate bottom shell is fixedly connected with the outer frame, one side of the metal plate bottom shell is provided with a battery bin, and the other side of the metal plate bottom shell is fixedly connected with the outer frame. A battery is arranged in the battery bin, a lamp panel is arranged on the side, away from the battery bin, of the metal plate bottom shell, and LED lamp beads are arranged on the two sides of the lamp panel at equal intervals. The utility model relates to the technical field of photovoltaic illuminating lamps, and solves the technical problems in the prior art that most of solar street lamps adopt single-system illumination control, the damage of a single-system illumination circuit in long-time use can cause the street lamps not to work normally, inconvenience is brought to night illumination, the night illumination range is reduced, and the service life of the street lamps is prolonged. The danger coefficient of night travel is increased, the maintenance frequency and cost of the street lamp are high, and the stability and the service life of the solar street lamp are affected.

The utility model discloses a kind of garden LED landscape lamps with waterproof and moisture-removing structure, comprising: landscape lamp holder, waterproof top cover is fixedly arranged at one end of landscape lamp holder upper side, lamp holder sealing ring is embedded between landscape lamp holder and waterproof top cover, transparent acrylic plate is fixedly arranged at one end of waterproof top cover upper side;In the utility model, lamp holder sealing ring arranged between landscape lamp holder and waterproof top cover can play better sealing effect, lampshade sealing ring is embedded on the connecting ring in top cover, and solar photovoltaic panel is located below lampshade sealing ring after being adhered, and transparent acrylic plate is adhered on the outside of lampshade sealing ring upper side, and fixed screw is fixedly installed in inner ring through hole, sealing ring through hole two and photovoltaic panel through hole, first, lampshade sealing ring can play better sealing effect, and through transparent acrylic plate, sealing effect can be further improved, and also play better protection effect without affecting solar photovoltaic panel lighting effect.