Driver diagram of light-emitting diodes
SUBSTANCE: LED driver circuit comprises at least one (10) LED chain (12) connected in series and a power source for converting the AC mains voltage to an output voltage (Uout) applied to said at least one LED chain (10). The power supply includes a single-stage up converter (14, 16) configured to directly convert the AC mains voltage to an output voltage (Uout). The boost converter (16) is a multi-level converter having a key (S1-S4) And a capacitor (C1-C4), respectively associated with each level, the capacitors of different levels being connected in series, and the corresponding (10) LED chain (12) is connected in parallel to each of the capacitors. The converter includes an inductor and further comprises a controller (Q) configured to actuate the keys (S1-S4) in a critical intermittent mode, in which the current flowing through the inductor (L; L1-L4), can fall to zero only in the established period.
EFFECT: increasing the efficiency of the converter.
9 cl 7 dwg
SUBSTANCE: invention is referred to lighting devices and control of lighting devices operation. The result is obtained due to registration of the first and second values of phase angle for dimmer coupled to the power converter exciting load of solid-state lighting, at that the first, and second values correspond to in-series half-periods of line voltage input signal and difference between first and second value is defined. When this difference exceeds threshold difference specifying asymmetric waveform of the line voltage input signal, the selected corrective measure will be performed.
EFFECT: correction of misoperation and/or shutdown of power supply from load of solid-state lighting in order to eliminate undesired effects, such as twinkling.
20 cl, 13 dwg
SUBSTANCE: invention relates to the field of lighting engineering. A light-emitting diode light source (100) consists of an array (110) of red LEDs, an array (120) of blue LEDs covered with a luminophor, a colour point from mixed light coming from the array (120) of blue LEDs covered with the luminophor is within the limit range of a quadrangle of CIE chromaticity diagram, where coordinates of the quadrangle apexes are (0.375, 0.427), (0.390, 0.456), (0.366, 0.430), (0.38, 0.46) respectively, at that LEDs transient temperature for the array (120) of blue LEDs covered with the luminophor and array (110) of red LEDs is practically equal to room temperature and the ratio of lumen output of the array (120) of blue LEDs covered with the luminophor in regard to lumen output of the array (110) of red LEDs varies within the range of 4:1 up to 1.5:1.
EFFECT: increased efficiency of emitted warm white light.
10 cl, 4 dwg
SUBSTANCE: invention relates to lighting engineering. An electronic actuator (100) for solid-state lamp start-up is designed to receive the alternating-current voltage with the phase cutoff; receive from the alternating-current voltage with the phase cutoff of data on light regulation that defines the required level of light regulation at the lamp output; start up the solid-state lamp in the light-regulation mode at the level of light regulation corresponding to the required level of light regulation received from the alternating-current supply voltage with the phase cutoff. The actuator record input current; it comprises a lamp current control generator (130); a control device that controls the lamp current control generator, a rectifier (110) that rectifies the received alternating current supply voltage with the phase cutoff; a current sensor (150) that records an output current of the rectifier; a signal processor (160) that processes an output signal of the current sensor and generates an input signal for the control device (140).
EFFECT: regulation of light intensity.
9 cl, 13 dwg
SUBSTANCE: invention relates to the lighting module for electrical and thermal connection with power infrastructure, having at least one power source, at that each power source contains two electrodes. The lighting module contains the light source for the light emission, in it the light source is the heat source during the light emission, two electric contacts to ensure contact with the electrodes of at least one power source, by this the electric connection is ensured between the lighting module and power infrastructure; control system located between the light source and electric contacts to control the power supply to the light source, in which the lighting module contains the measurements system measuring the thermal resistance of the thermal connection between the lighting module and power infrastructure during making of the electric connection , and in which the control system is made with possibility to reduce power supply to the light source when the thermal resistance is above the pre-set value to protect the lighting module against overheating. Invention also relates to the method of lighting module protection against overheating.
EFFECT: improved operation reliability of the module.
15 cl, 5 dwg
SUBSTANCE: invention relates to lighting devices and control of operation of lighting devices. The result is achieved by that the system for control of the level of luminous efficiency of the solid-state lighting load operated by the illumination regulator includes the detector of phase angles and the load converter. The detector of phase angles is designed with a possibility of measurement of phase angle of the illumination regulator on the basis of rectified voltage from the illumination regulator and determination of the power control signal on the basis of comparison of the measured phase angle with pre-set first threshold. The power supply converter is designed with a possibility of supply of output voltage into the solid-state lighting load, and the power supply converter operates in the mode without feedback on the basis of rectified voltage from the illumination regulator when the measured phase angle is greater than the first threshold, and operates in the mode with feedback on the basis of the rectified voltage from the illumination regulator and a certain power control signal from the circuit of determination when the measured phase angle is less than the first threshold.
EFFECT: reduction of luminous efficiency in solid-state lighting load at low settings of the respective illumination regulator.
20 cl, 9 dwg
SUBSTANCE: invention refers to lighting engineering. The lighting block contains at least two channels of the light sources and exciter for light sources. The exciter includes DC voltage converter and control system to control current supplied to at least one of two channels as response to the control signal provided by the DC voltage converter. Preferably the feedback circuit is controlled by the switching device in DC voltage converter to maintain the light level ensured by the light sources at the required level regardless of voltage changes of the power source and load.
EFFECT: increased efficiency of the light source control to achieve the required illumination effect.
18 cl, 5 dwg
SUBSTANCE: invention is referred to lighting devices and control of the lighting devices operation. The result is attained due to determining of maximum and minimum angles of a dimmer (204) connected to a power converter (220) during the operation of a solid-state lighting load (240); and dynamic regulation of the output power for the power converter based on the determined maximum and minimum angles of the dimmer. The regulated output power of the power converter regulates the upper level of the light output by a load of solid-state lighting at the maximum phase angle so that the preset upper limit value is met and regulates the lower level of the light output by a load of solid-state lighting at the minimum phase angle so that the preset lower limit value is met.
EFFECT: control of the power converter in order to ensure an equal range of light control to the load of solid-state lighting notwithstanding the type of the dimmer.
18 cl, 12 dwg, 2 tbl
SUBSTANCE: invention relates to lighting engineering. Illumination device (1) contains at least one light source (50) of low power; input power supply cascade (20) fit for receipt of low alternate voltage from an electronic transformer (ET); buffer power supply cascade (30) having input (31) connected to output (29) of the input power supply cascade; excitation circuit (40) intended for excitation of light and receipt of power supply from the buffer power supply cascade. The input power supply cascade generates output current pulses in order to charge the buffer power supply cascade at relatively low frequency, and during each output current pulse the input power supply cascade consumes input current, output current always has current value bigger than the required minimum load for the electronic transformer.
EFFECT: reducing light blinking by improving compatibility between light sources and electronic transformer.
15 cl, 8 dwg
SUBSTANCE: invention relates to lighting. Result is ensured by that the lighting device contains multiple LEDs connected in series. In the lighting device the first set of LEDs has first type LEDs, having first output of the light flow decrease as first function of the junction temperature. The second set of LEDs has second type LEDs having second output of the light flow decreased as second function of their junction temperature that differs from the first function. At least one first type LED and one second type LED are connected in parallel to the resistors set with resistance depending on the temperature. The resistance temperature dependence stabilizes ratio of the first light flow output to the second light flow output at different junction temperatures of the first set of LEDs and second set of LEDs.
EFFECT: prevention of change of ratio of light flow output of various types LEDs as part of same lighting device.
13 cl, 11 dwg
SUBSTANCE: invention relates to lighting engineering. Lighting installation (1) comprises input pins (2) for connection to alternating current (AC) network; a circuit (10) of light-emitting diodes (LED) connected in series with input pins; rectifier (30) with input pins (31, 32) connected in series with LED circuit, controllable voltage source (40) with input pins coupled to output pins of the rectifier; in-series assembly of at least one auxiliary LED (51) and the second ballast resistor (52) coupled to output pins of the controllable voltage source. Voltage source comprises in-series assembly of the fist controllable resistor (46) and the second resistor (47) coupled in parallel to input pins; controllable semiconductor stabilitron connected in parallel to output pins, which has input pin (48) connected at connection point between two resistors; at that positive output pin is connected to positive input pin while negative output pin is connected to negative input pin.
EFFECT: simplified regulation of the device in regard to luminous power and luminous efficiency shift to lower colour temperature.
7 cl, 2 dwg
FIELD: mechanics, physics.
SUBSTANCE: device to excite electroluminescence consists of input unit connected in series with microprocessor unit, sinusoidal oscillation generator, amplitude-frequency response corrector, step-up transformer and exciting electrodes furnished with plates for the specimen to be placed there between. Note that the said exciting electrodes are optically coupled with the photo receiver connected with the ADC which, in its turn, is connected with the microprocessor unit. The latter is connected to the display unit and amplitude-frequency response corrector, while the sinusoidal oscillation generator is connected via a feedback loop with the microprocessor unit.
EFFECT: simpler design, smaller sizes, brightness correction in wide frequency range.
SUBSTANCE: fluorescent tube fitting device has a light-emitting diode element (4) which includes at least one electric starter element (4.1) connected to at least one phase conductor and also connected to at least one neutral wire at least through one conductor (4.2) having at least one light-emitting diode (4.3).
EFFECT: reduced need to replace fluorescent tubes in fittings and reduced electrical power consumption.
3 cl, 2 dwg
SUBSTANCE: invention relates to a light-emitting device (1) having an exciter (10) and a flat light-emitting element (20), where the exciter (10) is connected to a source (2) and a the light-emitting element (20), and where the light-emitting element (20), which has internal capacitance (21), is connected to the said exciter (10) so that the internal capacitance (21) serves as the passive output filter of the exciter (10).
EFFECT: design of a light-emitting device with smaller thickness.
10 cl, 9 dwg
SUBSTANCE: proposed illuminator 10 built around LEds comprises assemblage of LED different-colour light sources 14 to produced mixed-colour light and LED source control device to control said sources in compliance with preset values. Note here that first control data are generated by, at least, one colour transducer 22. Illuminator differs from known designs in that its incorporates device 30, 32 designed to determine the temperature of each LED light source and device 26 to compensate for preset values in compliance with second control data including LED light source temperature.
EFFECT: higher stability of operation.
20 cl, 2 dwg, 1 tbl
SUBSTANCE: invention relates to a device for powering luminous elements, having an energy supply unit (12), a first luminous element (30), having a first colour, preferably white, a second and a third luminous element (34, 38), having a second and a third colour, preferably for adjusting the colour of the first luminous element, and a controlled switch (42), connected in series to the said third luminous element (38). Said serial connection from the said third luminous element (38) and said switch is connected in parallel to the said second luminous element (34). The energy supply device is characterised by that the said energy supply unit (12) has a third and a second output (20, 22). The said first luminous element (30) is connected to the said first lead (20) and the said second and third luminous elements (34, 38) are connected to the said second led (22), the said energy supply unit (12) is configured to provide controlled, preferably independently controlled, output signals on the said first and second leads (20, 22), and the said second and third luminous elements (34, 38) and the said energy supply unit (12) are configured in such a way that, the said third luminous element (38) emits light when the switch (42) is closed. The invention also relates to a method of powering the luminous elements.
EFFECT: fewer switches.
20 cl, 4 dwg
SUBSTANCE: circuit (1) with light-emitting diodes is provided with first subcircuits, having first light-emitting diodes (11) and second subcircuits having second light-emitting diodes (13) and switches (14), in conducting states, for switching on the second light-emitting diodes (13) and switching off the first light-emitting diodes (11), and, in non-conducting states, for switching off the second light-emitting diodes (13) and switching on the first light-emitting diodes (11). Also, the first and second subcircuits have different signal characteristics, such as different minimum threshold voltage values, so as to be realised by different types of light-emitting diodes (11, 13) or using a different total number of serial light-emitting diodes (11, 13) or by adding elements with threshold voltage to the first subcircuits. The light-emitting diodes (11, 13) have different colours and can be used backlight.
16 cl, 4 dwg
SUBSTANCE: illumination device (1) comprises, for example, diodes LED (L1, L2, L3, L4) with separate emission spectra. Detectors D1, D2, D3, D4) can generate a vector of measurement signals (S1, S2, S3, S4) which represent light output of one active light emitter. Further, based on a linear relationship obtained during the calibration procedure, the characteristic value of the light output of that light emitter (L1, L2, L3, L4) is calculated using the measurement vector, wherein said characteristic value is based on the decomposition coefficient of an individual emission spectrum on basic functions.
EFFECT: improved method.
25 cl, 6 dwg
SUBSTANCE: illumination system (100) comprises: a set (14) of lamps; a controller (115); a user input device (19); memory (120) which determines discrete colour points containing an ID table (121) of hue, an ID tale (122) of saturation, an ID table (123) of brightness and boundary memory (124) which determines the boundary of the colour space. Based on data (x1, x2, x3) received from the user input device and information in the memory, the controller generates colour control signals (ξ1, ξ2, ξ3) for the set of lamps. The controller compares user input data with information in the boundary memory. If the controller detects that the said point lies beyond the boundaries of the colour space, the controller calculates the replacement point on the boundary of the colour space which was determined in the boundary memory (124), and generates is control signals based on the replacement point.
EFFECT: reduced volume of memory space required.
3 cl, 3 dwg
SUBSTANCE: switched array of light elements has first, second and third light-emitting elements and first and second switches. The first light-emitting element has first and second leads, and the second light-emitting element has a first lead and a second lead connected to the second lead of the first light-emitting element. The third light-emitting element has a first lead connected to the first lead of the first light-emitting element, and a second lead. The first switch has a first lead connected to the first leads of the first and third light-emitting elements, and a second lad connected to the first lead of the second light-emitting element. The second switch has a first lead connected to the second lead of the third light-emitting element, and a second lead connected to the second leads of the first and second light-emitting elements.
EFFECT: fewer circuit components.
13 cl, 8 dwg
SUBSTANCE: matrix of luminous elements (100) includes the first (LEE1), the second (LEE2) and the third (LEE3) light-emitting elements and the first (140) and the second (150) controlled current sources. The first light-emitting element differs with the first operating voltage VOpi at which or over which it can essentially emit the light. The second light-emitting element includes the first output (120a) and the second output (120b) connected to the second output of the first light-emitting element; at that, the second light-emitting element differs with the second operating voltage Vop2. The third light-emitting element includes the first output (130a) connected to the first output (110a) of the first light-emitting element and the second output (130b); at that, the third light-emitting element differs with the third operating voltage Vop3. The first controlled current source is connected between the first output of the first light-emitting element and the first output (120b) of the second light-emitting element, and the second controlled current source is connected between the second output (110b) of the first light-emitting element and the second output of the third light-emitting element.
EFFECT: reducing the number of circuit components.
15 cl, 5 dwg