36results about "Semiconductor lamp usage" patented technology

The utility model relates to OLED backlight source technical field especially relates to a kind of ultra-thin OLED backlight source device. Its technical scheme includes rear shell, front shell, OLED backlight source module, drive shaft, driven shaft and mounting shaft, the inside fixed plate is placed in the rear shell upper end, the OLED backlight source module is set on the fixed plate upper end, the front shell is set on the rear shell upper side, the drive shaft and three groups of driven shaft are set in the rear shell inside, the mounting shaft is set in the rear shell side, the screw is set on the mounting shaft upper end, the threaded sleeve is set in the front shell lower end, the ball bearing one rotatingly installed with mounting shaft is embedded and installed in the inside four corners of the fixed plate, the drive shaft one end is provided with torsion block, the through-hole corresponding torsion block is clamped in the inside of the rear shell one end. The utility model is through linkage structure, only through rotating torsion block shell drives multiple screws to be fixed in front shell back, avoid the separate disassembly of multiple fixed parts, so that OLED backlight source module maintenance disassembly is time-saving and convenient.

The invention relates to a protection circuit for protecting a load. The protection circuit comprises an input node adapted to be couplable to a SMPS, a bleeder coupled between the input and a return node, a first output node adapted to be coupled to the input node and a load, a second output node adapted to be coupled to the load, wherein the load is couplable between the first output node and the second output node, an impedance coupled between the second output and the return node, a switch coupled in parallel with the impedance, and a controller adapted to control the switch and the bleeder, wherein the controller is adapted to activate the bleeder and open the switch when a voltage across the impedance is above a threshold and wherein the controller is adapted to deactivate the bleeder and close the switch when the voltage across the impedance is below the threshold.

An apparatus for retrofitting a HID lighting system includes using existing components of previously installed HID lighting systems such as its ballasts while replacing some capacitors to adjust the power supplied to a retrofit LED luminaire. Unused ballast drivers are removed, and a self-contained ballast driver assembly is mounted into the electronic control enclosure of the previously installed lighting system. Some of the retrofit LED luminaires include an uplighting lens, an optic, or a diffuser for providing uplight. An aiming bracket and an aiming plate allow for the horizontal aiming angle of a light luminaire to be set.

An electronic device including at least one electronic component, a first circuit chip, a glass substrate, a first conductive line and a second conductive line. The glass substrate has a first surface, a second surface opposite to the first surface and at least one conductive via extending from the first surface to the second surface, wherein the first circuit chip is electrically connected to the at least one electronic component through the at least one conductive via and configured to control the at least one electronic component. The first conductive line and the second conductive line are arranged on the glass substrate, wherein the first conductive line is electrically connected to the at least one electronic component, and the second conductive line is electrically connected to the first circuit chip, wherein the first conductive line is electrically connected to the second conductive line through the at least one conductive via.

The application relates to a switching quantity acquisition circuit, in particular to a switching quantity acquisition circuit for filtering interference voltage, which comprises an input end, a photoelectric coupler, a resistor R1 and a stabilizing diode which are connected in series on an input line from the input end to the photoelectric coupler, the input line is connected with a light emitting source of the photoelectric coupler, and a light receiver of the photoelectric coupler is connected with a sampling end of the switching quantity acquisition circuit and forms a sampling circuit. Compared with the prior art, the application has the advantages that when the input end inputs interference voltage, the interference voltage cannot pass through the stabilizing diode, the interference voltage cannot open the photoelectric coupler, and thus the switching quantity acquisition circuit can avoid collecting error signals; signal voltage can pass through the stabilizing diode and be normally transmitted to the photoelectric coupler, so that the switching quantity acquisition circuit can normally work.

The application relates to the technical field of line lamps, in particular to a rectangular line lamp of a splicing type, which comprises a line lamp shell, a uniform light cover plate, a blocking end plate, a splicing buckle, a splicing clamping groove, an LED lamp bead circuit board and a control air bag, the uniform light cover plate is fixedly arranged on the upper position of the line lamp shell, the line lamp shell is provided with the blocking end plate at both ends, respectively, a splicing buckle is fixedly arranged on the side surface position of the line lamp shell, a splicing clamping groove is arranged on the other side surface position of the line lamp shell, the inside of the line lamp shell is provided with the LED lamp bead circuit board, and the lower portion of the LED lamp bead circuit board is connected with the control air bag; the line lamp is spliced and combined through the mutual buckling of the splicing buckle and the splicing clamping groove, the transverse width of the line lamp is changed, and the line lamp can be applied to more decoration and lighting places.

The invention relates to a method for controlling a pixelated light source for a motor vehicle. The method makes it possible to prevent thermal runaway and premature ageing of the elementary pixels of the source independently of the projected light levels. By dynamically adapting the electric current intensities at the elementary light sources, the control method provides protection for the semiconductor junctions of the pixels of the pixelated light source in order to increase their lifespan and avoid visible defects in a beam projected onto the road due to thermal runaway or premature ageing of the semiconductor junctions.

The present disclosure relates to a dimming interface using a combination of analog and digital dimming. An LED lighting system includes a switching circuit arrangement that adjustably drives a string of LEDs and is controlled by a reference current and an enable signal. A controller generates the reference current and the enable signal based on a PWM signal such that the switching circuit arrangement: when a duty cycle of the PWM signal is greater than a threshold duty cycle, supplies a first LED current to the string of LEDs that is proportional to the duty cycle, thereby performing analog dimming; and when the duty cycle of the PWM signal is less than the threshold duty cycle, supplies a second LED current to the string of LEDs that has a duty cycle that is proportional to the duty cycle of the PWM signal such that an average LED current delivered to the string of LEDs is proportional to the duty cycle of the PWM signal, thereby performing digital dimming.

The lighting unit includes a power supply that provides a maximum voltage and multiple LED lighting circuits. Each of the LED lighting circuits includes an LED string, multiple switches, a switching sequencer, and a switch controller. The LED string includes multiple series-connected emitters with a total forward voltage that exceeds the maximum voltage of the power supply. Each of the switches is coupled in parallel with a respective LED of the LED string. The switching sequencer provides a sequence of switching patterns such that the total forward voltage of simultaneously active LEDs in each switching pattern does not exceed the maximum voltage of the power supply. The switch controller operates the switches according to each of the switching patterns in the sequence. The LED strings of each of the multiple LED lighting circuits are arranged in a two-dimensional array.

The present disclosure relates to various embodiments to enable the assembly, construction, and operation of a miniature integrated LED lamp comprising an envelope positioned at a distal end of a solid body portion and a base positioned at a proximal end of the solid body. The envelope further comprises a transparent light diffuser enclosing a semi-cylindrical light pipe containing one or more LEDs populated on its external surface and a LED driver positioned internally within a formed lumen of the light pipe. The light pipe and LED driver are physically and or electrically connected to a cylindrical heatsink encapsulated within the envelope and body portion of the bulb, facilitating thermal management. The envelope and base are assembled together with one or more specific lamp bases to form an LED lamp satisfying performance standards suitable for retrofit or replacement of a standard INC or halogen lamp.

A combination for illuminating the interior of a building comprises a fixture and a retrofit kit. The fixture has a base attached to a building ceiling, the fixture having a first tombstone, and a second tombstone. The first and second tombstones are configured to receive between them a fluorescent light tube. The retrofit kit is connected to the base. The retrofit kit includes a light panel, the light panel having a first side facing the fixture and an opposite second side. The light panel resides between the first tombstone and the second tombstone, and the fixture resides above the light panel. The combination is devoid of a fluorescent light tube. The base and the light panel define between them a raceway. A light emitting diode is disposed on the second side of the light panel.

An apparatus for retrofitting a HID lighting system includes using existing components of previously installed HID lighting systems such as its ballasts while replacing some capacitors to adjust the power supplied to a retrofit LED luminaire. Unused ballast drivers are removed, and a self-contained ballast driver assembly is mounted into the electronic control enclosure of the previously installed lighting system. Some of the retrofit LED luminaires include an uplighting lens, an optic, or a diffuser for providing uplight. An aiming bracket and an aiming plate allow for the horizontal aiming angle of a light luminaire to be set.

This invention discloses a controller, power conversion system, and method for controlling a switching converter. The controller includes a drive terminal, a multi-function terminal, and a control circuit system coupled to the drive terminal and the multi-function terminal. The drive terminal provides a drive signal to alternately turn on and off power switches in the switching converter at the frequency of the drive signal. In normal mode, the multi-function terminal provides a control current to control the frequency of the drive signal. In protection mode, the multi-function terminal provides a control voltage indicating the presence of an abnormal condition in the system including the controller. If an abnormal condition is detected in normal mode, the control circuit system activates an alarm signal. When the alarm signal is valid, the control circuit system also switches operation to protection mode and generates a control voltage at the multi-function terminal.

The invention relates to a color and / or color temperature tunable LED filament (20, 22, 24) comprising an elongated carrier (220) comprising a first major surface (222) and a second major surface (224) arranged opposite the first major surface, a plurality of LEDs (210) arranged in at least one linear array on the first surface of the elongated carrier, wherein the plurality of LEDs comprises LEDs of different colors and / or different color temperatures, a first elongated transparent or substantially transparent layer (230) covering the plurality of LEDs on the first major surface and further at least partially covering the first major surface, and a first elongated light scattering layer (240) arranged at least partially covering the first transparent or substantially transparent layer.

The invention relates to a retrofit Light Emitting Diode, LED, lighting device for connecting to a fluorescent ballast, wherein the retrofit LED lighting device comprises a first end comprising a first power connection and a second power connection for receiving an output power from the fluorescent ballast and comprising a first relay, wherein the first power connection and the second power connection are coupled to a first single connector, wherein the first end is adapted to provide a first output and a second output, a second end comprising a third power connection and a fourth power connection for receiving an output power of the fluorescent ballast and comprising a second relay, wherein the third power connection and the fourth power connection are coupled to a second single connector, wherein the second end is adapted to provide a third output and a fourth output, wherein the first output is coupled to the third output and the second output is coupled to the fourth output, a light emitting diode, LED, load comprising a first set of one or more LEDs coupled to the first output and a second set of one or more LEDs coupled to the second output, wherein the first set of one or more LEDs and the second set of one or more LEDs are coupled in series, wherein the retrofit LED lighting device further comprises the first relay comprising a first relay switch and a first driving coil circuit, wherein the first relay switch is in a series connection between the first power connection or the second power connection and the LED load, and the second relay comprising a third relay switch and a second driving coil circuit, wherein the second relay switch is coupled between the third power connection or the fourth power connection and the LED load, wherein the first driving coil circuit is electrically coupled across the first set of one or more LEDs and the second driving coil circuit is electrically coupled across the second set of one or more LEDs.

OLED module with: a holding device (1) with a holding element (2) which has a mounting surface (3) on a main surface, and an organic light-emitting diode (7) mounted on the mounting surface (3), wherein - the retaining element (2) comprises several first volume regions (4) whose thickness decreases from a side surface of the retaining element (2) towards the center of the retaining element (2), wherein a second volume region (5) is arranged between each of two directly adjacent first volume regions (4), - the first volume areas (4) of the retaining element (2) in the area of ​​the mounting surface (3) exhibit increased elasticity, so that the first volume areas (4) can absorb more force through elastic deformation than the second volume areas (5) of the retaining element (2), and - the elasticity of the retaining element (2) varies along the main surface.

The application provides a kind of test OLED lighting lamp strip energy saving, waterproof test equipment, relate to lamp strip test equipment field, the test OLED lighting lamp strip energy saving, waterproof test equipment, lamp strip body is tested, the left end of lamp strip body is fixedly installed with switch, including test groove, the cross bar is arranged in the test groove.The test OLED lighting lamp strip energy saving, waterproof test equipment, set up test groove, cross bar, strut and shower, the lamp strip body is fixed on cross bar, shower is sprayed on the lamp strip, and waterproof test is carried out.Energy-saving effect of lamp strip is detected according to electric power flowmeter.Let positioning rod cooperate with cross bar by sliding rod descending, and tightly hold lamp strip body.By infrared light emitter, light source catcher, electromagnet module and magnetic stripe cooperate, correct lamp strip body.Set the switch that controls lamp strip body to press type, to reduce the movement of lamp strip body.Thereby avoid the inaccuracy of spraying position caused by lamp moving.

The objective is to provide a long-lifetime light-emitting element. The light-emitting element includes: a first electrode; a second electrode; and an EL layer, wherein the EL layer includes a hole injection layer and four layers (first to fourth). The hole injection layer contains an organic acceptor and is located between the first electrode and the first layer. The first layer contains a first hole transport material, the second layer contains a second hole transport material and is located between the first and third layers, the third layer contains a third hole transport material, and the fourth layer contains a host material and a light-emitting material and is located between the third layer and the second electrode. The HOMO level of the second hole transport material is deeper than the HOMO level of the first hole transport material, the HOMO level of the host material is deeper than the HOMO level of the second hole transport material, the HOMO level of the third hole transport material is equal to or deeper than the HOMO level of the host material, the difference between the HOMO levels of the second and third hole transport materials is less than 0.3 eV, and the second hole transport material is a triarylamine compound having a dibenzofuran skeleton or a dibenzothiophene skeleton directly or through a divalent aromatic hydrocarbon group bonded to the nitrogen of an amine.

We provide a power supply equipped with a multi-function protection circuit. [Solution] The drive power supply equipped with a multi-function protection circuit includes a rectifier module, a conversion module, and an output filter module. The rectifier module is connected to an external power supply. The conversion module is connected to the rectifier module. The output filter module is connected to the load and includes a filter unit and a protection unit. The filter unit is connected to the conversion module. The protection unit is connected to the filter unit and the conversion module. The protection unit includes current limiting members and switching members connected in parallel to each other.

A controller includes a drive terminal, a multi-function terminal, and control circuitry coupled to the drive terminal and the multi-function terminal. The drive terminal provides a drive signal to alternately turn on and turn off a power switch in a switching converter at a frequency of the drive signal. In a normal mode, the multi-function terminal provides a control current to control the frequency of the drive signal. In a protection mode, the multi-function terminal provides a control voltage indicating that an abnormal condition is present in a system including the controller. The control circuitry activates an alert signal if the abnormal condition is detected in the normal mode. The control circuitry also switches operation to the protection mode and generates the control voltage at the multi-function terminal when the alert signal is active.

The utility model provides an LED constant current driver which is connected with a solar panel, a battery and an LED and comprises a charging management module, a function protection module, a light-operated switch and anti-shake module, a timing adjustment module and a constant current driving module. The charging management module controls on and off of a charging power tube in the charging management module; the function protection module is used for detecting the voltage and temperature of the battery in the charging process and the discharging process; the light-operated switch and the anti-shake module reduce the power consumption of the chip and prevent the phenomenon of LED flicker caused by too low battery voltage in the discharging process; the timing adjusting module controls a constant current reference in the constant current driving module; and the constant-current driving module realizes LED constant-current discharge. The LED constant-current driver disclosed by the utility model integrates various protection functions and is internally provided with an optimized discharge curve function, so that the complexity of a peripheral system board can be greatly simplified, the efficiency of a system is improved, the reliability of a chip is improved, and the complexity of the system board is optimized.

A dimming device (100) includes: a connector (101) configured to connect a LED device (200); and a pulse width modulation (PWM) switch circuit (102) configured in the connector (101), wherein the PWM

An LED device is disclosed. The LED device includes a full bridge rectifier electrically coupled to connectors for receiving an AC voltage from an AC power source. The full bridge rectifier rectifies the AC voltage from the AC power source and produces a DC voltage. The LED device also includes a first LED circuit and a second LED circuit that are electrically coupled to the full bridge rectifier for receiving the DC voltage. The first LED circuit comprises at least two LEDs and a first current limiting device and the second LED circuit comprises at least two LEDs and a second current limiting device. The first current limiting device has a first current limiting value and the second current limiting device has a different, second current limiting value such that light emitted from the first LED circuit has a different color than light emitted from the second LED circuit.

The application provides a lamp panel and a control method thereof and a display panel, comprising at least one light source group, at least one driving group and at least one first switch element group, the light source group comprises at least two light sources, wherein the first switch element group in the application comprises at least two first switch elements, the input end of the first switch element, the output end of the first switch element and the corresponding light source are connected in series between the first power line and the driving group, the control end of the first switch element is electrically connected to the controller, and the luminance of the at least two light sources in the same light source group can be controlled separately between the adjacent two frames, so that the luminance of the light source group is different from the luminance of the adjacent two frames, the transition of the luminance of the light source group between the first frame and the second frame is realized, and the phenomenon that the switching between the two frames with different gray scales is abrupt is improved.

According to one embodiment, a display apparatus includes a plurality of semiconductor layers, a first insulation film, a first conductive layer, a second insulation film and a display element includes a second conductive layer. The first conductive layer and the second conductive layer are opposed to each other to form a capacitance unit.

The present invention discloses a bidirectionally illuminating light source triggered by power-line pulse signals, comprising a first light emitting module triggered by power-line pulse signals and a reverse light emitting module, which are connected in parallel between a first port and a second port of the power lines. The first light emitting module triggered by power-line pulse signals comprises an LED color light group and an LED driver. When the voltage level of said first port of said power lines is higher than that of said second port, said LED driver drives said LED color light group according to said power-line pulse signals loaded on said power lines; when the voltage level of said first port of said power lines is lower than that of said second port, said reverse light emitting module operates. The present invention also discloses a bidirectional emitting light string triggered by power-line pulses, and a bidirectional emitting control apparatus triggered by power-line pulses. A spectral range is obtained by forward current while the light source is triggered to performs operations by the pulse signals input from the power lines, and another spectral range is obtained by reverse current, greatly increasing the spectral range of the light source with only two power wires.

This invention discloses a dynamic zoned light and color synchronization intelligent control device based on RGB-Mini LED, relating to the field of Mini LED dynamic zoned light and color control technology. It includes an LED light and color control device body, on which a dimming lamp is mounted, and a protective mechanism is provided. The protective mechanism includes a blowing unit. This RGB-Mini LED-based dynamic zoned light and color synchronization intelligent control device, through the combined use of the blowing unit and the squeezing unit, can achieve the purpose of protecting the LED beads. When the light and color synchronization intelligent control device is in use, it can increase the internal positive and negative ions, neutralizing static electricity, thereby effectively preventing electrostatic discharge from damaging the light and color synchronization intelligent control device, eliminating the influence of static electricity on the light and color synchronization intelligent control device, ensuring the stable operation of the light and color synchronization intelligent control device, and improving the service life of the light and color synchronization intelligent control device.

A lamp driver has a transformer, a primary side circuit and a secondary side circuit. The primary side circuit comprises a half bridge circuit and a sensor circuit for measuring a conduction time or switching frequency of one of the transistors of the half bridge circuit. An estimate is provided of the output voltage from the measured conduction time.

The invention relates to the technical field of medical equipment control, in particular to a power supply circuit of a cold-state light source and electronic equipment. The input end of an output management module is connected with a power supply module, and the output end of the output management module is connected with an output interface for accessing an external load; the input end of the voltage reference module is connected with the power supply module. The first output end of the voltage reference module is connected with the reference input end of the current-limiting protection module. The sampling input end of the current-limiting protection module is connected with the output end of the output management module, and the output end of the current-limiting protection module is connected with the feedback end of the output management module; the second output end of the voltage reference module is connected with the reference input end of the boost control module; the sampling input end of the boost control module is connected with the output end of the output management module, and the output end of the boost control module is connected with the feedback end of the output management module. Intelligent management of the cold-state light source is realized, and the starting success rate, the operation stability and the safety of the light source system of the medical equipment are improved.

A system for creating an LED lighting system for efficient dimming, and the system includes a voltage source, an electronic switch controlled by a pulse width modulation (PWM) drive signal, and a series connected LED lighting module. The LED includes an LED set and a constant current drive circuit to drive a constant current through the LED set. The voltage source and a bypass branch in parallel with the electronic switch are adapted such that when the electronic switch is off, the power delivered to the constant current drive circuit is sufficient to maintain operation of the constant current drive circuit, ensuring the ability for deep dimming.