54results about How to "Guaranteed Lighting Quality" patented technology

The invention discloses an intelligent illumination system based on a power line carrier communication technology. The system is characterized by comprising a master controller, a plurality of slave controllers and a plurality of LED (light emitting diode) lamp groups, wherein the master controller and the plurality of slave controllers perform data communication through power lines, and each slave controller controls one LED lamp group. The intelligent illumination system performs intelligent management to the LED lamp groups, reasonably sets opening, closing and brightness of the lamps in the area according to intensity of illumination of natural light and people walking conditions in each area, and can control opening, closing and brightness of the lamps in each area by virtue of a control command which is manually input on a touch screen, so that the LED lamp group has a remarkable energy-saving effect on the premise of guaranteeing the illumination quality; and by adopting the power line carrier communication technology and utilizing the existing illumination circuit, cabling is not required, and communication is reliable, so that the cabling cost is saved, and the problems of communication quality and safety are solved.

The invention relates to a device and method for detecting keyboard defects. The device for detecting the keyboard defects comprises a camera, a light source, a keyboard fixing device, a base, a round bar guide rail, a tray, a straight line guide rail, a longitudinal ball screw, a transverse ball screw and a computer. The method for detecting the keyboard defects comprises the steps of image preprocessing, interesting area extraction, image correction, feather extraction and model identification. According to the device and the method for detecting the keyboard defects, labor intensity and interference of subjective factors of people can be reduced, and meanwhile production efficiency of enterprises can be improved.

The invention relates to the field of lighting systems, in particular to an intelligent LED street lamp and a control method thereof. The intelligent LED street lamp mainly comprises the following components: a power supply module, a voltage stabilizing circuit, a circuit protector, an infrared sensor, an intelligent control module, a wireless hotspot module, a remote control module, a fault alarm unit and the like. A novel LED street lamp brightness stepless regulation concept is adopted; the LED street lamp can carry out intelligent brightness adjustment according to the road traffic flow condition, the weather condition and the season change, so that intelligentization is achieved by the LED street lamp. The power supply module is optimally utilized through intelligent management; and electric energy is saved, so that the lighting quality of the street lamp is ensured; and meanwhile, the service lifetime of the LED street lamp is prolonged.

The invention relates to an energy-saving lighting control system, which comprises a microwave motion sensor, an illumination detection unit, a control processor, a relay, a brightness adjusting unit, an illuminating lamp, a wireless communication unit and an intelligent terminal, wherein the microwave motion sensor and the illumination detection unit are simultaneously connected with the control processor; the control processor is connected with the illuminating lamp through the relay and the brightness adjusting unit; and the intelligent terminal is connected with the control processor through the wireless communication unit to control on / off of the illuminating lamp through the control processor. After an ambient light intensity signal is lower than a preset value and a human motion position signal is received, the illuminating lamp is turned on through the relay, and control on on / off and the brightness of the illuminating lamp according to the people flow condition is achieved, so that the lighting quality is ensured, meanwhile, the energy consumption is reduced and the targets of energy conservation and environment protection are achieved. In addition, the intelligent terminal can carry out remote on / off control and brightness adjustment on the illuminating lamp through the wireless communication unit, so that the green energy-saving effect of a building and energy efficiency management are achieved.

The invention discloses a lighting lamp with an automatic following function. The lighting lamp with the automatic following function comprises four positioning lamps installed on the periphery of a stage; a plurality of spot lamps are arranged between every two positioning lamps; a plurality of floors are laid on the bottom face of the stage; weight measuring devices and signal emitters are arranged below the floors; the irradiating direction of the spot lamps can be adjusted; the spot lamps are rotationally installed on motor bases and are provided with driven gears; motors are arranged in the motor bases and are connected with driving gears; the driven gears are matched with the driving gears to work; the motor bases are arranged on rotating disks which are rotationally arranged on installing bases; signal receivers are arranged above the spot lamps and are matched with the signal emitters to work; and each positioning lamp is provided with a detecting and positioning device which is internally provided with an infrared inductor and an ultrasonic sensor. Compared with the prior art, the lighting lamp with the automatic following function can automatically follow persons on the stage and provide concentrated illumination to replaced a laggard manual lighting manner, and is low in cost and convenient to use.

The invention provides a light source system, a projection device and a lighting device. The light source system comprises: a laser light source used for emitting a first-color laser; a supplementarylight source used for emitting the laser as supplementary light; and an optical path selection element including a transmission part used for transmitting the first-color laser, a light path selectionpart used for sequentially reflecting the first-color laser to a first light path or a second light path at any time, and the driving part used for driving the transmission part and the light path selection part to be alternately positioned on the light path of the first color laser; a first wavelength conversion device used for generating second-color fluorescence under the excitation of the first-color laser transmitted along the first light path; and a second wavelength conversion device used for generating third-color fluorescence under the excitation of the first-color laser transmittedalong the second light path, wherein the second-color fluorescence, the third-color fluorescence and the supplementary light are combined with the first-color laser transmitted by the light path selection element and then emitted.

The invention provides a design method of an energy-saving lighting source spectrum and aims at solving the problem of energy waste due to that an invalid spectrum of an existing lighting source is absorbed by an object in the prior art. The design method comprises the following steps: (1) obtaining spectral reflection properties; (2) establishing an optimization goal and a constraint condition; (3) solving a genetic algorithm; and (4) further obtaining a group of spectral data lowest in energy consumption according to a chromosome lowest in fitness obtained in the previous step, wherein the data is the energy-saving lighting source spectrum of an object to be lighted. In the design method, firstly, the spectral reflection properties of the surface of the object to be lighted are obtained, and secondly, the light source spectrum is optimized by use of the genetic algorithm under the condition of ensuring that the chromatic aberration between the designed light source and a white light source is smaller than values within a human eye perceptible range; as a result, the portion, absorbed by the object, of the spectrum is reduced, the utilization rate of the spectrum and the energy utilization rate are increased, and the purposes of saving energy and lighting are achieved. The design method of the energy-saving lighting source spectrum is applicable to lighting such as display lighting and furniture lighting in buildings.

The invention discloses a community street lamp energy-saving controller, and relates to the field of electric control, particularly to the community street lamp energy-saving controller. The community street lamp energy-saving controller comprises a detection device, a main controller, a power module and a lighting driver which are connected in sequence, and is characterized in that a standard clock and a status indication device are further connected onto the main controller; a main light and an assistant light are connected onto the lighting driver; the lighting driver is further connected with the main controller. The community street lamp energy-saving controller is low in cost, practical and convenient, effectively solves the problem of lighting in different time periods as well as in late night when a person passes, utilizes data of a chip of the clock to control the brightness and darkness of the street lamp in different seasons and different time periods, detects the outside brightness and the activity condition of peripheral people through various sensors, and changes the lighting state of the street lamp in real time, so that under the premise that the lighting quality is ensured, useless community lighting can be reduced, and then street lamp lighting electricity utilization of the community can be greatly saved.

The invention discloses an intelligent induction sofa lamp, comprising a sofa body, a pressure sensor is arranged on the center of the upper surface of the sofa body, a solar cell panel is arranged on the sofa body, and an LED warm light is arranged on the sofa body, The lower end of the sofa body is provided with a support, the support is provided with a USB interface, one side of the USB interface is provided with a commercial power interface, the support is provided with a music player, and the support is provided with A voice-activated switch, which is electrically connected to the pressure sensor, the LED warm light, the solar panel, and the music player, respectively. The beneficial effects of the invention are that the structure is simple and the practicability is strong.

The invention discloses a safety street lamp capable of automatically regulating an illumination state on rainy days. The safety street lamp comprises a shell, a water collection tank, a driving box,a lamp post, a driving block, a reserved block, a water outlet and a reserved groove; a mounting bottom plate is welded to and fixed at the bottom end of the lamp post, and a lamp pole is welded to and fixed at the top end of the lamp post; racks are uniformly fixed on one side of the lamp pole, and a shell is arranged on one side of the lamp pole; a second gear is fixed at one inner end of the shell, and a second linkage rod is mounted at the central position of the second gear; a steel wire rope is arranged on a first fixed pulley; the other end of the steel wire rope passes through a secondfixed pulley to be connected with the shell. According to the safety street lamp disclosed by the invention, by mounting the lamp pole, the first fixed pulley, the second fixed pulley, the steel wirerope, a clump weight, the racks, the first gear, the shell, the driving box, the water collection tank and an LED lamp main body, an illumination height of the device can be automatically changed onrainy days, so that the illumination quality is ensured and a traffic accident is avoided.

The invention discloses a portable environment-friendly and energy-saving lamp capable of generating and discharging electricity, belonging to the lighting field. The invention aims at providing a multifunctional portable environment-friendly and energy-saving lamp which is convenient in use and capable of generating and discharging electricity. The lamp comprises a battery, a hand generating mechanism and a light source; wherein, the lamp comprises a shell which is internally provided with the hand generating mechanism; the power output end of the hand generating mechanism is connected with the power output end of the battery; the power output end of the battery is connected with the light source; the battery and the light source are connected with a control circuit; the control circuit comprises a switch against misoperation. The lamp is environment-friendly and energy-saving, convenient and practical, and is suitable for the places needing lighting.

The invention discloses a light guide tube comprising a plurality of optical assemblies and an adhesive. One end of at least one optical assembly has a first concave portion. The adhesive is used to bond the optical assemblies to form a light channel and at least part of the adhesive is disposed in the first concave portion. The invention also discloses a projection system.

The invention discloses an automobile headlight production process which comprises the following steps: (1) selecting a material; (2) mounting a frame; (3) implementing point welding on a molybdenum plate; (4) implementing pressure sealing and forming holes; (5) highlighting hydrogen; (6) exhausting air; (7) welding; (8) inspecting a finished product. The automobile headlight production process is reasonable and simple in step, reasonable in material selection, low in cost, high in quality and applicable to popularization in the automobile lamp industry, the process procedures are greatly simplified, most importantly, the service life of the automobile lamp is prolonged due to addition of a rare gas xenon, and due to addition of a reinforcing ring, faults such as welding off of the automobile lamp because of vibration are avoided.

The invention discloses a plant culture rack system based on a natural light source and an artificial light source. The system comprises a natural light collecting module and a culture rack module. The natural light collecting module is located above the culture rack module, the natural light collecting module comprises a lighting device, a light guiding device, a light emitting device and an automatic tracking conversion device, and the culture rack module includes a culture rack base, culture positions and a boss. The culture positions and the boss are arranged on the upper surface of the culture frame module, the boss is arranged between each two adjacent culture positions, and the culture positions and the boss are evenly arranged on the culture rack base. The boss is in the shape of aquadrangular prism, and the boss includes an LED lamp at the upper end of the boss and an internal heat pipe radiator. The system combines a natural light illumination system and an artificial lightillumination system into the same illumination unit system, devices are simple, the installation is convenient and flexible, no major construction modification is needed for a plant culture room building structure, and by using the sunlight light source and the artificial light source to be combined to conduct lighting, the system is uniform in illumination, energy-saving and environmental-protection, and ensures the continuous and stable lighting quality required for plant growth.

The invention discloses a small numerical control integrated laser with multi-wavelength, which is composed of the two parts that are an integrated laser and a numerical control system. A plurality of solid lasers and semiconductor lasers with small volumes are integrated in the integrated laser. The range of wavelength can be discretely distributed between 400nm and 900nm according to the demand, each laser with various wavelengths can be output through the same SMA905 port in a timesharing way. The numerical control system is communicated with an upper computer by a serial port, so that a user can switch the wavelength of the laser according to a digital command and also can control the power of the laser with the same wavelength by the digital command; the numerical control system automatically detects the temperature of each laser module and guarantees the stability of delivered power by controlling the stable current temperature of a refrigerating module. The system also realizes the alarms and protections of temperature excursion, over current and overpressure. The user can realize dead-stop of the laser by a hardware switch on the plate or the digital command, thus leading the laser to be a standby which does not output laser. The numerical control integrated laser with multi-wavelength is small in volume, light in weight and low in power consumption, which is suitable for light sources of various apparatuses and can be moveably used.

The invention provides an energy-saving type highway tunnel equivalent illumination control system which is characterized by comprising an out-cavern monitoring feedback unit, an in-cavern monitoringfeedback unit, a master controller and a stepless dimming illumination unit, wherein out-cavern monitoring feedback unit is used for monitoring the brightness information, color temperature information and traffic volume information outside the cavern, and outputting the monitored out-cavern information data to the master controller; the in-cavern monitoring feedback unit is used for monitoring the in-cavern side wall reflection information and the in-tunnel air pollution information and transmitting the monitored in-cavern information data to the master controller; the master controller is used for receiving the out-cavern information data and the in-cavern information data and calculating to obtain the minimum illumination brightness and the illumination color temperature required in thetunnel, and outputs an illumination control instruction to the stepless dimming illumination unit according to the calculation result so as to control the work of the stepless dimming illumination unit; the stepless dimming illumination unit is used for receiving the illumination control instruction output by the controller and adjusting the illumination brightness and color temperature accordingto the instruction. The system provided by the invention can realize adaptive adjustment of the tunnel illumination brightness and color temperature.

The invention provides an LED white light source device. The LED white light source device comprises a heat dissipation substrate, an inner encapsulation layer, a blue light shielding encapsulation layer, an anti-dazzling layer, a light uniformizing optical structure, red LED chips, a green LED chip, blue LED chips and a lamp cup; the heat dissipation substrate is arranged on the outer bottom faceof the lamp cup, the red LED chips, the green LED chip and the blue LED chips are located on the inner bottom face of the lamp cup and are in conductive contact with the heat dissipation substrate, the inner encapsulation layer is arranged on the LED chips, the blue light shielding encapsulation layer is arranged on the inner encapsulation layer, the anti-dazzling layer is arranged on the blue light shielding encapsulation layer, and the light uniformizing optical structure is arranged on the anti-dazzling layer; and the shielding rate of the blue light shielding encapsulation layer on lightwith the wave band below 460 nm is 80% or above, the shielding rate of the blue light shielding encapsulation layer on blue-violet light with the wave band ranging from 350 nm to 460 nm ranges from 90% to 98%, and the light transmission rate of the blue light shielding encapsulation layer on visible light with the wave band ranging from 470 nm to 750 nm keeps at 85% or above. The white LED illuminating device can reach the blue light shielding rate of 90% or above, can well filter out blue-violet harmful wave band light and emit white soft light, can be widely applied to various LED illuminating, is an innovation for an existing white LED illuminating device and is wide in development prospect.

The invention discloses a sweet potato seedling cultivation device, and relates to the technical field of sweet potato planting equipment. The cultivation device includes a cultivation main body and aculture solution storage box which are installed on a pedestal; multiple liquid storage trays are arranged inside the cultivation main body, and seedling growing trays are elastically supported on the liquid storage trays; self-adjusting assemblies are arranged between the seedling growing trays and the liquid storage trays and include elastic members arranged on the two sides of the liquid storage trays; the upper ends of the elastic members are connected and installed on the seedling growing trays, and the lower ends of the elastic members are fixedly installed on the liquid storage trays;the two sides of the liquid storage trays are respectively provided with liquid discharging ports and liquid feeding ports, and a culture solution is quantitatively input to the liquid feeding ports;gate plates are arranged inside the liquid storage trays and attached to the opening ends of the liquid discharging ports, and the upper parts of the gate plates are lower than the upper edges of theliquid discharging ports; the gate plates are fixedly installed on the seedling growing trays through supporting rods; and the internal of the cultivation main body is arrayed with multiple heaters. Demands of the seedling growing trays on the culture solution can be well met, so that seedling growing rates can be increased; and the circulating flow supply of the culture solution can be realized so that the seedling growing rates can be increased.

The invention belongs to the field of illuminating equipment and in particular relates to an adjustable light beam automobile headlight. A short-focus lens is placed between a lamp shell and a collimating mirror; the collimating mirror is placed between the short-focus lens and the lamp shell; a main light source and an auxiliary light source are disposed in the lamp shell; a homogenization separation plate is mounted between the main light source and the auxiliary light source; the main light source is disposed in a fixing bearer in the lamp shell; one side of the auxiliary light source is provided with a focusing lens, a reflection mirror A and a reflection mirror B; the focusing lens is placed between the reflection mirror A and the reflection mirror B; the other side of the auxiliary light source is provided with a micro motor; the micro motor is connected with a lead screw; the lead screw is covered with a rotating sheet; one side of the rotating sheet is connected with the short-focusing lens via a connection rod A; the other side of the rotating sheet is connected with the main light source via a connection rod B; a plus lens and a concave lens are arranged under the main light source; and the concave lens is mounted under the plus lens.

The invention discloses an LED streetlamp, which comprises a heat conducting tube, a radiating rib plate and a lamp body. The radiating rib plate is arranged outside the lamp body, one end of the heat conducting tube extends into the lamp body and is connected with an LED light source inside the lamp body, the other end of the heat conducting tube penetrates through the radiating rib plate, and heat generated from the LED light source is transmitted to the radiating rib plate through the heat conducting tube. The lamp body comprises an upper lampshade, a lower lampshade, a reflector plate, a base plate and a circuit driving system, wherein the upper lampshade and the lower lampshade are combined to form a lampshade in a fastening manner, the reflector plate, the base plate, the LED light source and the circuit driving system are all arranged in the lampshade, the edge of the reflector plate is fastened to the joint between the upper lampshade and the lower lampshade, the lampshade is divided into two parts, the heat conducting tube is embedded on one side of the base plate, the LED light source is embedded on the other side of the base plate, the whole base plate is attached on the reflector plate I, and the circuit driving system is arranged at the tail of the lamp body. The LED streetlamp has the advantages that problems about heat radiating and light distributing of the LED streetlamp of the prior art are solved well.

The invention discloses an illuminating lamp for mine operation. The illuminating lamp structurally comprises a ventilation and screen-cleaning illuminating device, a wire and ventilation pipe bus, arear cover, heat dissipation strips, a supporting frame, ventilation holes, a lampshade, a light reflecting cover and screws, the rear cover is arranged at the rear end of ventilation and screen-cleaning illuminating device, the wire and the ventilation pipe bus is arranged on the rear cover, the heat dissipation strips are distributed on an outer ring of the ventilation and screen-cleaning illuminating device and are connected with one another, the heat dissipation strips are perpendicular to the tangent line of the surface where the outer ring of the ventilation and screen-cleaning illuminating device is located, the light reflecting cover is arranged on the ventilation and screen-cleaning illuminating device, and the ventilation holes are formed in the front end of the ventilation and screen-cleaning illuminating device. According to the illuminating lamp for mine operation, the ventilation and screen-cleaning illuminating device is arranged, so that screen-cleaning bristles on a semicircular screen-cleaning brush can be used for clearing up dust and water vapor when a first illuminating lamp and a second illuminating lamp are rotated to be changed in position, and the illuminating quality of the illuminating lamps is guaranteed; and when a fault occurs, the second illuminating lamp can be used as a spare part and the like, so that the mine operation is carried out orderly.

The invention discloses a power supply circuit for an LED. The power supply circuit is characterized by mainly comprising a driving chip U1, a resistor R1, a resistor R2, a capacitor C4, a diode D1, adiode D2, a power supply input circuit, an emitter driving circuit and a power supply output circuit. By adoption of a BP3108 integrated chip to be combined with a peripheral circuit, power supply current and voltage can be processed, thereby ensuring that a stable current can be provided for the LED; and therefore, the illumination equality of the LED can be ensured, the service life of the LEDcan be prolonged, and the power supply circuit is suitable for popularization and application.

The invention relates to a divisional application of a Chinese patent application with an application number of 201710875198.1. The invention provides a preparation method of a blue light blocking packaging layer. The blue light blocking packaging layer comprises a substrate layer, a blue light blocking layer and a blue light dispersion absorption layer, the blue light blocking layer is arranged on the substrate layer, and the blue light dispersion absorption layer is arranged on the blue light blocking layer; the substrate layer is formed by uniformly dispersing a blue light absorption pigment on a first substrate, the blue light blocking layer is formed by uniformly dispersing a blue light blocking agent on a second substrate, and the blue light dispersion absorption layer is formed by uniformly dispersing a blue-violet absorbent and blue light dispersion nanoparticles on a third substrate. The blue light blocking packaging layer prepared by the invention can well filter blue-violetharmful wave band light and emit soft white color light, can be widely applied to various LED lighting, is an innovative application of an existing white LED lighting device, and has a wide development prospect.

The invention relates to a street lamp energy-saving management system, comprising a remote control center, a wireless communication unit, a microwave mobile sensor, an illuminance detection unit, a control processor, a relay, a street lamp and a street lamp power supply system. The remote control center is connected with the microwave mobile sensor and the illuminance detection unit through the wireless communication unit. The microwave mobile sensor and the illuminance detection unit are connected with the control processor. The control processor is connected with the street lamp through the relay. The street lamp power supply system comprises a solar photovoltaic panel and a storage battery. According to the system, the switch-on and switch-off of the street lamp can be controlled according to pedestrian and vehicle stream condition; the illumination quality is ensured; the energy consumption is reduced, thereby realizing energy-saving and environment protection purposes. Moreover, solar energy can be converted into electric energy by the solar photovoltaic panel, thereby persistently supplying power to the street lamp, the street lamp is green and energy-saving, and energy efficiency management can be realized.

The invention discloses a liftable LED street lamp convenient to operate. The liftable LED street lamp comprises an adjusting cylinder, a telescopic rod, supports and lamp bodies, wherein the telescopic rod is arranged above the adjusting cylinder; two sides of the telescopic rod are fixedly connected with the supports respectively; one end of each support is fixedly connected with the corresponding lamp body; the top end of the telescopic rod is fixedly connected with a storage battery; the upper part of the storage battery is fixedly connected with a solar cell panel through solar supports;the interior of each lamp body is provided with an LED substrate; the upper part of each LED substrate is electrically connected with an LED driver; and cooling fans are arranged on two sides above the interior of each lamp body respectively. The liftable LED street lamp is simple in structure and novel in design, the height of the device can be adjusted through the arranged adjusting cylinder andtelescopic rod, the device can be installed by workers conveniently, meanwhile, the device can be maintained and cared by workers conveniently in the later period, the convenient effect is increased,the danger caused by high-altitude operation of the workers is avoided, and the liftable LED street lamp has the good popularization value.

The invention discloses a power supply circuit used for an LED. The power supply circuit is characterized in that the power supply circuit is mainly composed of a driving chip U1, a resistor R1, a resistor R2, a capacitor C4, a diode D1, a diode D2, a power supply input circuit and a power supply output circuit. Power supply current and voltage can be processed by adopting a BP3108 integrated chip with combination of a peripheral circuit so that stable current is ensured to be provided to the LED, the lighting quality of the LED can be ensured, the service life of the LED can be enhanced and thus the power supply circuit used for the LED is suitable for popularization and application.

The invention relates to a light-emitting diode (LED) continuous lighting device which comprises a switching power circuit, a charging circuit, a boosted circuit, a lithium battery, an LED constant current driving circuit and an LED light. When external power grid voltages are normal, the LED driving circuit is directly driven by the external power grid voltages, the lithium battery is charged by the charging circuit alone, and the fact that the lithium battery can complete whole charging circulation is guaranteed. When the external power grid voltages are interrupted, voltages of the lithium battery are instantly switched to the boosted circuit, the LED driving circuit is driven by the boosted voltages of the lithium battery, and efficiency can reach over 90%. Due to the facts that the energy density of the lithium battery is quite large, and the integration level of chips which form the circuits is high, the LED continuous lighting device can be designed to be small on the whole. Compared with other illumination lamps, an LED is powered by a direct current electric source, the illumination lamp can save electricity by over 90% compared with an electric incandescent lamp, and the service life of the LED lamp can reach up to 100,000 hours. The LED lamp is used in a construction field, electric power can be saved, and lighting quality can be guaranteed.

The invention relates to the field of lighting systems, in particular to an intelligent LED street lamp and a control method thereof. An intelligent LED street lamp mainly includes the following components: power supply module, voltage stabilizing circuit, circuit protector, infrared sensor, intelligent control module, wireless hotspot module, remote control module, fault alarm unit and other components. The invention adopts a novel concept of stepless brightness adjustment of LED street lamps. LED street lamps can intelligently adjust brightness according to road traffic flow conditions, weather conditions, and seasonal changes, so that LED street lamps can be intelligent; intelligent management makes the power supply module the most efficient. The optimized utilization saves electric energy, thereby ensuring the lighting quality of street lamps and extending the life of LED street lamps at the same time.

The invention relates to a self-cleaning lamp for spinning. The self-cleaning lamp comprises a lamp body, and the lamp body comprises a bulb and an illuminating circuit device and a power supply which are electrically connected with the bulb. The self-cleaning lamp is characterized in that a bladless air fan is arranged on the periphery of the bulb; the bladless air fan comprises an annular member sleeving the periphery of the bulb and an air fan circuit device which is electrically connected to the annular member and the power supply. According to the self-cleaning lamp for spinning, by arranging the bladless air fan on the periphery of the bulb, air-force cleaning of the outer wall of the bulb can be implemented, cleaning effect is fine, speed is high, polishing scratches are avoided, and excellent illuminating quality is retained accordingly.