39results about How to "Improve lighting experience" patented technology

The present invention provides a circuit for preventing power back flash of an LED lamp. The circuit includes a circuit body for preventing power back flash of the LED lamp, and an input capacitance rapid discharge module. The circuit body for preventing power back flash of the LED lamp is connected with a peripheral circuit. The input capacitance rapid discharge module is connected with the circuit body for preventing power back flash of the LED lamp, and is used for rapidly lowering an input voltage of the peripheral circuit to zero when an output voltage of a power supply capacitor reaches a preset value. The circuit for preventing power back flash of the LED lamp does not change a start current of an LED working chip while solving the problem of power back flash, thereby not increasing starting time of normal powering of an LED system, and having advantages of preventing power back flash, having a short powering starting time, and providing good user experience.

A light distribution system for freezer that includes a LED strip light disposed on a freezer door. The LED strip lamp includes a lamp holder, a strip-shaped polarizing lens, and a plurality of LED chips. The lamp holder includes a lens setting surface and a reflecting surface. The strip-shaped polarizing lens includes a plurality of optical axis, an incident surface, a first and second convex lens exit surfaces, and a transition surface. An angle between the illuminated surface and the optical axis includes an acute angle and the illuminated surface includes a main light region illuminated by the outgoing light of the first and second convex lens exit surfaces and a sub-light region illuminated by the reflected light from the reflecting surface.

The invention relates to an LED constant current driving device which comprises a rectifying module, a control module, a constant current module and a lighting module, wherein the output end of the rectifying module is respectively connected with the control module and the lighting module; the constant current module is arranged between the control module and the lighting module; the lighting module comprises N LED units which are connected in series in sequence; the constant current module comprises a current limiting circuit, a sampling circuit and a compensating circuit; in the monotone increasing or monotone decreasing process of the output voltage of the rectifying module, the N LED units which are connected in series in sequence are conducted one by one or quenched one by one; when at least one LED unit is conducted, the control module outputs a control voltage according to the voltage generated by the compensating circuit and the sampling circuit together to control the current limiting circuit to decrease or increase the current conducted onto the LED unit, so as to enable the power of the conducted LED unit to keep stable.

A dimming control power supply for LED lamps, comprises a first secondary power supply module, an output control module, a PWM signal receiving module, and a control signal converting module. The output control module is configured to adjust the output current according to the received constant DC voltage signal with a variable amplitude. The control signal converting module converts the PWM signal received by the PWM signal receiving module into a constant DC voltage signal with a variable amplitude. The output control module adjusts the output current according to the constant DC voltage signal with a variable amplitude to adjust the brightness of the LED lamps. The light source provided by the LED lamp powered by the dimming control power supply for the LED lamps doesn't form streaks in the photographs taken by the cell phone or the camera and thus enhances the user's light experience.

The invention discloses a light distribution system for a strip-shaped LED lamp. The light distribution system for the strip-shaped LED lamp comprises a light source module, a light-reflecting device and an irradiated surface. The light source module comprises at least one LED chip. The light-reflecting device comprises a front light-reflecting surface, the front light-reflecting surface comprises a ground irradiation section used for irradiating the ground, a long-distance section and a short-distance section, and the optical axis is intersected with the contour line of the long-distance section. The ground irradiation section comprises a first curvature, the long-distance irradiation section comprises a second curvature, the short-distance irradiation section comprises a third curvature, the first curvature is greater than the second curvature, and the second curvature is greater than the third curvature. According to the light distribution system for the strip-shaped LED lamp, the main irradiated surface can obtain the basically same illuminance in the vertical direction thereof under the mutual matching of the long-distance irradiation section and the short-distance irradiation section of the light-reflecting device, so that the light use experience of a user can be greatly improved, and the shopping desire of the user is increased.

An LED strip light for shelf signboards, comprises a strip-shaped lamp chamber, and an LED light-emitting module. The strip-shaped lamp chamber comprises a card board connecting edge, a non-transparent edge, an upper transparent edge and a lower transparent edge. The LED light-emitting module comprises at least one LED chip, and a strip-shaped lens. The strip-shaped lens includes an incident surface, a first fully reflecting surface, a second fully reflecting surface, a refractably reflecting surface. The first fully reflecting surface reflects all the incident lights thereon toward the upper light transparent edge. The second fully reflecting surface reflects all the incident lights thereon toward the refractably reflecting surface. And the outgoing light of the refractably reflecting surface is directed toward the lower transparent edge. The LED strip light for shelf signboards allows the display side placed on the board to be illuminated so as to improve the user's desire to shop, and to illuminate the boundary between the laminates and the column, and it can improve user experience and save energy and reduce costs.

The present invention discloses an intelligent household table lamp. The intelligent household table lamp comprises a base, wherein a connecting piece is fixedly connected to the top of the base, a lamp pole is fixedly connected to the top of the connecting piece, a lampshade is movably connected to the top of the lamp pole, an LED lamp is movably connected to the bottom of an inner cavity of thelampshade, and a smoke detector and a temperature detector are fixedly connected to the top of the right side of the lamp pole from top to bottom in sequence. According to the intelligent household table lamp of the present invention, through the cooperation of the base, the connecting piece, the lamp pole, the lampshade, the LED lamp, the smoke detector, the temperature detector, a control panel,a single-chip microcomputer, a WIFI connector, a wireless transmitter, a brightness adjuster, the loudspeaker and a storage battery, the following problems have been solved: the existing intelligenttable lamp has more functions, but does not have a fire warning function, when a residential user goes out and a fire breaks out in the home, the user can not know the fire situation in the house, when a neighbor or other person discovers a fire and reports an alarm, the fire situation has been severe, resulting in significant economic loss to the user.

The embodiment of the invention discloses a delay lighting system, which comprises a light emitting module, an energy storage unit, a control unit, a delay light emitting unit and a main power supplycircuit connected with the light emitting module. The control unit is connected with the energy storage unit, the light emitting module and the delay light emitting unit respectively; the energy storage unit is used for storing electric energy of mains supply into the energy storage unit when the main power supply circuit supplies power to the light emitting module, and the control unit is used for controlling the energy storage unit to supply power to the delay light emitting unit when the main power supply circuit stops supplying power to the light emitting module, so that the delay light emitting unit emits light. The delay lighting system can realize delay lighting of the delay light emitting module when the light emitting module stops lighting.

The invention discloses an intelligent home illumination control method, and relates to the field of intelligent home illumination. The method comprises the steps that environmental illumination detection data of at least two rooms in the same house is collected; according to the difference of the environmental illumination detection data of the at least two rooms, illumination control parametersof at least one first control room in the at least two rooms are generated; the illumination control parameters are sent to an illumination device control module of the first control room. Meanwhile,the invention discloses an intelligent home illumination control device. Accordingly, by collecting the illumination difference between the two rooms of a user, control is performed on illumination systems in the rooms according to the difference, the illumination difference between the two rooms conform to the preset requirements, discomfort, caused by the illumination difference, of eyes of theuser is avoided, eye fatigue is reduced, the comfort of the user in the process of crossing different rooms is improved, and the intelligent home illumination experience of the user is improved.

A light distribution system of an LED lamp comprises an irradiated plane, a light source module and a reflection board. The irradiated plane has a vertical direction. The light source module includes a lens. The lens is provided with a light axis and a light emitting face. The light emitting face has a first contour line and a second contour line, wherein the light axis serves as the symmetrical axis of the first contour line and the second contour line. On the section constituted with the light axis in the vertical direction, reflected light from the first contour line irradiates toward one side of the light axis after reflected by the reflection board, and reflected light from the second contour line irradiates toward the two sides of the light axis after reflected by the reflection board. Reflected light of the reflection board irradiates toward the irradiated plane. By means of the lens, the reflection board and the matched effect between the lens and the reflection board, objects on the upper layer and objects on the lower layer of the irradiated plane obtain the same illuminance, accordingly, the light using experience of users can be improved greatly, and the shopping desire of the users is increased.

The invention relates to a lamp demisting device, a lamp, a vehicle, and a lamp demisting method. The device comprises an invisible light emitter, an invisible light receiver, a light emitter and a controller; the invisible light emitter is used for emitting invisible light to an inner surface of a lamp mask of a lamp body; the invisible light receiver is used for receiving the reflected light obtained after the invisible light is reflected by the inner surface of the lamp mask, determining first light intensity of the reflected light, and sending the first light intensity sent by the controller; the controller is used for receiving the first light intensity, and determining the second light intensity corresponding to the light emitter according to the first light intensity when the firstlight intensity satisfies the preset demisting condition, and controlling the light emitter to emit the light to the inner surface of the lamp mask according to the second light intensity. Therefore,the lamp demisting device provided by the invention is good in demisting effect and durable, and excellent corrosion resistance; the demisting cost is reduced, and the problem that the lamp appearanceis influenced due to the corrosion of the sulfur-containing gas is avoided.

Disclosed are a maximum dimming parameter collection system and method for a lamp group with an unknown rated current. The lamp group comprises one lamp or more lamps connected in parallel at a constant voltage for operation. The maximum dimming parameter collection system comprises a dimming preset limited parameter and rated voltage preset module, an actual dimming parameter value collection module, a judgment module, a working pattern switching module, a limited current working module, an actual current value collection module and a maximum dimming parameter and dimming preset parameter value assignment module. By virtue of the maximum dimming parameter collection system, the maximum dimming parameter I<ref> of the lamp group with the unknown or changeable rated current can be collected in proper time, so that dimming within the full-range at any time is effective, and a phenomenon of a dead region occurring when the dimming amount is greater than 70% or 50% can be avoided, thereby further improving light use experience of a user.

The invention discloses an anti-dazzle reflection cup. The anti-dazzle reflection cup comprises reflection side walls, the reflection side walls form a reflection cavity in a surrounding manner, the reflection cavity is approximately conical, the large end of the reflection cavity is a light outlet, a light source containing position is arranged near the small end of the reflection cavity, a straight line which passes through the light source containing position and is perpendicular to the plane where the light outlet is located is defined as an optical axis, and in any plane passing through the optical axis, a light source placed at the light source containing position comprises a first light beam directly emitted from the light outlet and a second light beam emitted from the light outletafter being reflected by the reflection side walls; and on the same side of the optical axis, the maximum included angle formed by intersection of the first light beam and the optical axis is the maximum direct emergence angle, the maximum included angle formed by intersection of the light emitted from the light outlet after the second light beam is reflected by the reflection side walls and theoptical axis is the maximum reflection emergence angle, and the maximum reflection emergence angle is smaller than or equal to the maximum direct emergence angle. By means of the anti-dazzle reflection cup and the lamp with the reflection cup, excellent lighting experience is brought, and the problems of dazzling and heavy glare are solved.

The invention relates to the technical field of intelligent lighting, in particular to a high-resolution LED dimming control circuit which performs loop control on a high-frequency switching power supply LED drive according to an initial value preset by a control center and outputs a constant-voltage mode if the control circuit is no-load when started. When the control circuit is not in a no-loadstate, when the output current reaches a preset CC_REF value, a constant-current working mode is output. After an external dimming signal is accessed to the DIMM_IN, the control circuit judges the dimming signal, selects a matched mode, and changes the magnitude of the output current by changing the value of the CC_CONTEROL pin to realize dimming. According to the invention, an existing most advanced topological circuit is utilized to realize ultra-high-efficiency power supply driving, a high-efficiency topological structure is avoided, the problems that the illumination effect and the light jitter of the illumination control circuit are influenced when the illumination control circuit works intermittently in an output low-power standby state are solved, the light smoothness is close to the sunrise and sunset effects, and the illumination experience is improved.

The invention provides a flight lamp device. The flight lamp device comprises a housing and a propeller; a central controller and a motor are arranged inside the housing; the motor is fixedly connected to the propeller; an illumination lamp, a power supply switch, a flight switch and a camera are arranged on the housing; one terminal of the power supply switch is connected to a power supply and the other terminal is connected to a central controller; the central controller is connected to an ultrasonic wave sensor, an acceleration sensor, a magnetometer sensor, first Bluetooth, an image processor and a gyroscope; a fixing groove is formed on the housing; a matched user connection device is placed in the fixing groove; the matched user connection device comprises a wearing connection member; the wearing connection member is provided with an operation box; a display screen, a first switch, a microprocessor, an indication lamp, second Bluetooth, a second power supply and an operation device are arrange on the operation box. The flight lamp device can fly at a certain distance away from a person according to the motion of the person and provides illumination, and the flight direction is not limited.

The invention discloses a novel composite light source intelligent light distribution control system and a control method. The system comprises a PC terminal, an integrated controller, a driver and acomposite light source group, wherein a signal input end of the composite light source group is connected with a signal output end of the driver, a signal input end of the driver is connected with a signal output end of the centralized controller, and a signal input end of the centralized controller is connected with a signal output end of the PC terminal. The novel composite light source intelligent light distribution control system is advantaged in that the system is energy-saving, environment-friendly, cost-saving, convenient to adjust and the like.

The invention discloses a microwave induction lamp. The problem that an existing microwave induction lamp cannot adjust the illuminance according to the intensity of ambient light is solved, and is characterized by comprising a microwave sensing module, a light sensing module, a control module, a main driving module and an auxiliary driving module, and the main driving module and the auxiliary driving module are coupled and controlled by the control module; and the main driving module is coupled with a main lamp set, and an auxiliary lamp set is coupled to the auxiliary driving module. According to the microwave induction lamp, if the light intensity value is higher than the first light intensity threshold value, a main lamp set and an auxiliary lamp set are closed, so that electric energyis saved; if the light intensity value exists between the first light intensity threshold value and the second light intensity threshold value, the main lamp set and the auxiliary lamp set are started simultaneously; and the light intensity value measured by the light sensing module is lower than the second light intensity threshold value when the light around the microwave induction lamp is dark, and the control module only starts the auxiliary lamp set, so that the illumination indication effect of the microwave induction lamp is guaranteed, and electric energy can be saved.

The invention discloses a connecting device for a lighting power supply of an electric appliance, a connecting assembly and a refrigerator. The connecting assembly for the lighting power source of the electric appliance comprises a first connecting device and a second connecting device, wherein the first connecting device comprises a first bottom plate installed on the inner wall of the electric appliance, at least one pair of elastic terminals arranged on the first bottom plate and an elastic sheet switch arranged on the first bottom plate, and when the elastic sheet switch is closed, and the at least one pair of elastic terminals is electrically connected with an external power supply for supplying power to the lighting power supply. According to the connecting device arranged on an inner wall of the electric appliance and the connecting device arranged on the shelf, the electric appliance can be electrically connected with the shelf, so the illumination light source arranged on the shelf is switched on. The scheme provided by the invention is simple, reliable and low in cost, and a purpose of illuminating the interior of the electric appliance by using the illuminating light source on the shelf can be achieved.

A light distribution system of an LED strip lamp, comprising a light source module, a reflective device disposed in a light-emitting direction of the light source module, and an illuminated surface which receives the reflected light from the light reflective device, the illuminated surface includes a ground surface and a main illuminated surface perpendicular to the ground surface, the light source module includes at least one LED chip, each of the LED chips has an optical axis, the optical axis is perpendicular to the vertical, in the cross section along the vertical direction and the optical axis, the reflective device includes a main reflective surface, it is difficult for the light to directly enter the eyes of the user, so that it can achieve the purpose of preventing glare

The invention belongs to the technical field of intelligent lighting control, and discloses a lighting control method and system, a storage medium, a lighting terminal and a table lamp. According to the environment condition of the position of a user, the weather condition of the position and the time factor in the using process of the table lamp, filtering processing, difference value operation and data statistics are carried out on data, the change amplitude, range and change mode in front of the lighting terminal are analyzed, and the light output proportion is determined to automatically adjust the lighting light output state. According to the environment condition of the position where the user is located, the weather condition of the position where the user is located, the time in the table lamp using process and other factors, the lighting lamplight output state is automatically adjusted, the requirements of the user are intelligently responded, the lighting experience of the user using the table lamp is improved, the automation capacity of the table lamp is improved, and intelligence of the table lamp lighting system is realized.

A system and method for collecting maximum dimming parameters of a lamp group with an unknown rated current includes a lamp operating at a constant voltage or a plurality of lamps connected in parallel. A dimming preset limit parameter and rated voltage preset module, an actual parameter value collecting module, a judgment module, an operating mode switching module, a limit parameter working module, an actual dimming parameter value collecting module, and a maximum dimming parameter and dimming preset parameter value assignment module are present. The system can timely collect the maximum dimming parameter value of the lamp group with a variable or unknown rated current, dimming is effective at any time in the full-scale range, and the dead zone phenomenon if the dimming parameter value is greater than the dimming range of 70% or 50% is reduced.

The invention discloses a novel anti-dazzling court mining lamp which comprises a lamp body, an LED light source, a reflecting lampshade, a light-transmitting cover of an acrylic structure and an anti-dazzling optical grating, the LED light source is arranged on the surface of the lamp body, the reflecting lampshade is arranged in a bucket shape, and a mounting edge is arranged on the portion, corresponding to the lamp body, of the inner ring of the reflecting lampshade; the light-transmitting cover is fixedly installed on the installation edge through screws, and an anti-dazzling optical grating corresponding to the light-transmitting cover is arranged on the inner side or the surface of the light-reflecting lampshade. A heat dissipation device corresponding to the LED light source is arranged in the lamp body. The novel anti-dazzling court mining lamp has the advantages of being non-dazzling, low in dazzling, stable in driving, good in heat dissipation effect, low in energy consumption, lasting in efficiency, high in light transmittance, bright in light, uniform in light emitting, wide in irradiation range, long in service life and suitable for various places such as basketball courts, badminton courts and table tennis courts and factories and warehouses.

The invention provides a non-isolated dimming constant-current power supply. The power supply comprises a power supply control IC, a micro control unit MCU and a transformer, wherein the micro controlunit MCU receives a dimming control signal from a user, analyzes dimming power corresponding to the dimming control signal, generates a linear dimming mode control signal if the dimming power is greater than preset power, and generates an interrupted mode control signal if the dimming power is smaller than the preset power; and the power control IC converts a received PWM signal into a linear voltage signal and adjusts the size of output current Io of a load LED by utilizing the linear voltage signal when working in a linear dimming mode, and generates a frequency signal in a preset range according to the received PWM signal, providing the frequency signal to the transformer and adjusting the size of the output current Io of the load LED by utilizing the received PWM signal when working in an interrupted mode. According to the non-isolated dimming constant-current power supply, a linear dimming manner and an interrupted dimming manner are combined to effectively eliminate the noises,which can be sensed by ears, generated by the transformer in the constant-current power supply.