CN107620908B - High-voltage constant-current chip and constant-current power supply - Google Patents
High-voltage constant-current chip and constant-current power supply Download PDFInfo
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Abstract
The invention provides a high-voltage constant-current chip and a constant-current power supply, wherein the constant-current power supply comprises: the first high-voltage constant-current chip and the second bridge rectifier circuit. Based on the technical scheme provided by the invention, the power-off of the lamp mounting frame is realized, and only the intelligent controller is required to be arranged in the lamp mounting frame, so that the space required by a circuit on the lamp mounting frame is greatly reduced, and more space is provided for the appearance modeling of the lamp. The constant current power supply and the light source form the lamp module, the lamp module is taken as a whole, can be installed through the installation interface arranged on the lamp installation frame, and is connected through the conductive terminals arranged in the installation interface, so that the installation and the disassembly are very convenient.
Description
Technical Field
The invention relates to the technical field of illumination, in particular to a high-voltage constant-current chip and a constant-current power supply.
Background
At present, the main stream of decorative lamps and western style antique lamps in the market is that an isolated power supply and intelligent control are assembled in a suction top box of the lamps, and the appearance of the suction top box is larger and the proportion of the lamps is not coordinated due to the larger circuit volume of the power supply and the control. The complexity of wiring inside the lamp also presents difficulties in production and assembly.
Disclosure of Invention
The present invention provides a high voltage constant current chip and a constant current power supply to overcome or at least partially solve the above problems.
According to one aspect of the invention, there is provided a high-voltage constant-current chip configured to receive an externally input dimming and toning signal, output a light source power supply control signal according to the received dimming and toning signal, and realize adjustment and color mixing of light source current and brightness;
wherein, the high-voltage constant-current chip includes: the power supply pin is used for receiving the working voltage, the DIM1 pin and the DIM2 pin are used for receiving the dimming and toning signals, and the DS1 pin and the DS2 pin are used for outputting the power supply control signals of the light source.
According to another aspect of the present invention, there is provided a constant current power supply comprising: the first high-voltage constant-current chip and the second bridge rectifier circuit;
the first high-voltage constant-current chip comprises a first power supply pin, a DIM1 pin, a DIM2 pin, a DS1 pin and a DS2 pin, wherein the input end of the second bridge rectifier circuit is connected with the ground input end, the mains supply zero line input end and the mains supply fire line input end, the output end of the second bridge rectifier circuit is connected to the first power supply pin, the DIM1 pin and the DIM2 pin are respectively connected to the dimming signal input end and the toning signal input end, and the DS1 pin and the DS2 pin are respectively connected to the first light source power supply control signal output end and the second light source power supply control signal output end.
Optionally, the constant current power supply further includes: fifth resistor, sixth resistor, seventh resistor, eighth resistor;
the output end of the second bridge rectifier circuit is connected to the first power supply pin through the fifth resistor and the sixth resistor, and the DIM1 pin and the DIM2 pin are connected to the dimming signal input end and the color mixing signal input end through the seventh resistor and the eighth resistor respectively.
Optionally, the first high-voltage constant-current chip further includes: the constant current power supply comprises a first constant current detection pin, a second constant current detection pin, a first temperature protection pin and a second temperature protection pin, and further comprises: a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a first capacitor and a second capacitor;
the first constant current detection pin and the second constant current detection pin are connected to the grounding input end through the ninth resistor and the tenth resistor respectively, and the first temperature protection pin and the second temperature protection pin are connected to the first light source power supply control signal output end and the second light source power supply control signal output end through the eleventh resistor and the twelfth resistor respectively and connected to the grounding input end through the first capacitor and the second capacitor respectively.
According to still another aspect of the present invention, there is provided a high-voltage constant-current chip configured to receive an externally input dimming signal or a toning signal, and output a light source power supply control signal according to the received dimming signal or toning signal, to implement adjustment of light source current and brightness and color mixing;
wherein, the high-voltage constant-current chip includes: a power pin for receiving an operating voltage, a DIM3 pin for receiving the dimming signal or a DIM4 pin for receiving the color mixing signal, and a DS3 pin or a DS4 pin for outputting the light source power supply control signal.
According to still another aspect of the present invention, there is also provided a constant current power supply including: the second high-voltage constant-current chip, the third bridge rectifier circuit, the seventeenth resistor and the eighteenth resistor;
the second high-voltage constant current chip comprises a second power supply pin, a DIM3 pin and a DS3 pin, the third high-voltage constant current chip comprises a third power supply pin, a DIM4 pin and a DS4 pin, the input end of the third bridge rectifier circuit is connected with the grounding input end, the mains supply zero line input end and the mains supply fire line input end, the output end of the third bridge rectifier circuit is connected to the second power supply pin and is simultaneously connected to the third power supply pin, the DIM3 pin is connected to the dimming signal input end through a seventeenth resistor, the DIM4 pin is connected to the color mixing signal input end through an eighteenth resistor, the DS3 pin is connected to the first light source power supply control signal output end, and the DS4 pin is connected to the second light source power supply control signal output end.
Optionally, the constant current power supply further includes: thirteenth, fourteenth, fifteenth, sixteenth and sixteenth resistors;
the output end of the third bridge rectifier circuit is connected to the second power supply pin through the thirteenth resistor and the fourteenth resistor and connected to the third power supply pin through the fifteenth resistor and the sixteenth resistor.
Optionally, the second high-voltage constant-current chip further includes: the third constant current detection pin and the third temperature protection pin, and the third high-voltage constant current chip further comprises: the constant current power supply further comprises a fourth constant current detection pin and a fourth temperature protection pin: nineteenth resistor, twentieth resistor, twenty first resistor, twenty second resistor, third capacitor, fourth capacitor;
the third constant current detection pin is connected to the ground input end through the nineteenth resistor, the fourth constant current detection pin is connected to the ground input end through the twentieth resistor, the third temperature protection pin is connected to the first light source power supply control signal output end through the twenty-first resistor and is connected to the ground input end through the third capacitor, and the fourth temperature protection pin is connected to the second light source power supply control signal output end through the twenty-second resistor and is connected to the ground input end through the fourth capacitor.
Based on the high-voltage constant-current chip and the constant-current power supply provided by the embodiment of the invention, the power removal of the lamp mounting frame can be realized, and only the intelligent controller is required to be arranged in the lamp mounting frame, so that the space required by a circuit on the lamp mounting frame is greatly reduced, and more space is provided for the appearance modeling of the lamp. The constant current power supply and the light source form the lamp module, the lamp module is taken as a whole, can be installed through the installation interface arranged on the lamp installation frame, and is connected through the conductive terminals arranged in the installation interface, so that the installation and the disassembly are very convenient. By using the lamp mounting frame and the lamp module, the design space of the lamp on the appearance modeling is larger, and more beautiful modeling can be realized.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a partial cross-sectional view of a luminaire mount according to one embodiment of the present invention;
FIG. 2 is a partial top view of a luminaire mount according to one embodiment of the present invention;
FIG. 3 is a schematic structural view of a luminaire using a luminaire mount according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a luminaire module according to one embodiment of the present invention;
FIG. 5 is a top view of a luminaire module according to one embodiment of the present invention;
FIG. 6 is a cross-sectional view of a lamp module according to another embodiment of the invention;
FIG. 7 is a top view of a lamp module according to another embodiment of the invention;
FIG. 8 is a functional block diagram of an intelligent controller according to one embodiment of the present invention;
FIG. 9 is a circuit block diagram of an intelligent controller according to one embodiment of the present invention;
FIG. 10 is a circuit block diagram of a lamp module according to one embodiment of the invention;
FIG. 11 is a circuit diagram of a lamp module according to another embodiment of the present invention;
FIG. 12 is a circuit block diagram of an intelligent controller controlling a plurality of lamp modules, according to one embodiment of the present invention;
fig. 13 is a schematic view of a structure of a lamp body according to an embodiment of the present invention;
fig. 14 is a schematic view of a structure of a lamp body according to still another embodiment of the present invention;
FIG. 15 is a schematic diagram of a lamp module according to an embodiment of the invention;
FIG. 16 is a schematic view of a lamp module according to another embodiment of the invention;
fig. 17 is a schematic view of a lamp body according to another embodiment of the present invention;
fig. 18 is a schematic view of a structure of a lamp body according to still another embodiment of the present invention;
fig. 19 is a schematic structural view of a lamp module according to still another embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
FIG. 1 is a cross-sectional view of a luminaire mount according to one embodiment of the present invention. As shown in fig. 1, 2 and 3, the lamp mounting rack 10 provided in this embodiment includes a rack body 11, an intelligent controller 12, and one or more mounting interfaces 13 disposed on the rack body 11 for mounting a lamp module 20. The intelligent controller 12 is electrically connected with the mains supply zero line and the mains supply fire line, and outputs multiple paths of control signals through multiple output ends. A plurality of conductive terminals are arranged in the mounting interface 13 and are respectively connected with a plurality of output ends of the intelligent controller 12, a mains supply zero line and a mains supply fire line.
Corresponding to the lamp mounting rack 10 provided in the above embodiment, another embodiment of the present invention provides a lamp module 20 that can be used with the lamp mounting rack 10 provided in the above embodiment, and the lamp module may also be referred to as a light source module. Fig. 4 is a cross-sectional view of a lamp module according to one embodiment of the invention, and fig. 5 is a top view of the lamp module according to one embodiment of the invention. As shown in fig. 4 and 5, the lamp module 20 provided in this embodiment includes an assembly frame 21, a plurality of conductive terminals 22 disposed at one end of the assembly frame 21, and a constant current power supply 23 and one or more light sources 24 disposed on the assembly frame 21. The constant current power supply 23 includes a plurality of input terminals respectively connected to the plurality of conductive terminals 22, and a plurality of output terminals respectively connected to the one or more light sources 24, and the constant current power supply 23 outputs a light source power supply control signal at the plurality of output terminals based on control signals inputted from the plurality of input terminals. The light source power control signal may also control the illumination state or pattern of one or more light sources 24 while powering them. The light source 24 is disposed on a light source substrate 25, and the constant current power supply 23 is electrically connected to the light source substrate 25 and the conductive terminal 22, respectively. Fig. 6 and 7 show a lamp module having a different shape from the lamp module shown in fig. 4 and 5, which may be referred to as a candle lamp module, the basic architecture of which is similar to the lamp module shown in fig. 4 and 5, except that the location of the light source 24 is adapted to the shape. Further, as shown in fig. 4 and 5, the lamp module 20 may further include a diffusion cover 26 assembled on the light source substrate 25, and provided with a light source cavity for receiving the outgoing light of the light source 24 and distributing or diffusing the outgoing light for outgoing. As shown in fig. 6 and 7, the candle-shaped lamp module 20 may further include a light distribution element 27 assembled on the assembly frame 21, and also provided with a light source cavity for receiving the outgoing light of the light source 24 and distributing or diffusing the outgoing light for outgoing.
Based on the lamp mounting frame 10 and the lamp module 20 provided in the above embodiments, the power-off of the lamp mounting frame 10 can be realized, and only the intelligent controller 12 is required to be arranged in the lamp mounting frame 10, and no power supply is required to be arranged, so that the space required by a circuit on the lamp mounting frame 10 is greatly reduced, and more space is provided for the appearance modeling of the lamp. The constant current power supply 23 and the light source 24 are arranged on the lamp module 20, the lamp module 20 is taken as a whole, the lamp module can be installed through the installation interface 13 arranged on the lamp installation frame 10, the circuit connection is realized through the conductive terminals arranged in the installation interface 13 and the conductive terminals 22 of the lamp module, and the installation and the disassembly are very convenient. After the conductive terminals in the mounting interface 13 and the conductive terminals 22 of the lamp module 20 are connected, the control signal of the intelligent controller 12 can be transmitted to the lamp module 20 through the conductive terminals electrically connected with each other, so as to realize the control of the lamp module 20. By using the lamp mounting frame 10 and the lamp module 20, the design space of the lamp in the appearance modeling is larger, and more beautiful modeling can be realized.
Based on the above embodiment, in the implementation, the conductive terminals may have various structures, for example, terminal connection wires, pins, slots, contact copper sheets, etc., and the conductive terminals may all have the same structure, or may be combined to use various structures, which is not limited by the present invention. It should be noted that, the conductive terminals 14 in the lamp mounting frame 10 and the conductive terminals 22 of the lamp module 20 need to cooperate with each other, for example, one uses pins and the other uses slots. The housing portion of the assembly rack 21 or the mounting interface 13, in which the conductive terminals are housed, may be circular, and the terminals may be arranged in a ring or a matrix.
In a preferred embodiment of the present invention, as shown in fig. 8, the intelligent controller 12 may include a wireless control signal receiving circuit 121 and an intelligent control circuit 122, wherein the wireless control signal receiving circuit 121 receives a wireless control signal transmitted from a remote control device, converts the wireless control signal into an electrical control signal, and outputs the electrical control signal to the intelligent control circuit 122, and the intelligent control circuit 122 outputs a multi-path control signal through a plurality of output terminals based on the electrical control signal. Wireless control is a trend of controlling lamps, so a wireless control mode is preferably adopted in the invention, and there are many wireless technologies which can be adopted here, such as WIFI, RF, BLE, ZIGBEE, etc., and the invention is not limited thereto. The remote control device may be any device having a wireless communication function, such as a remote controller, a wireless router, and a wall switch of a mobile terminal.
Preferably, the intelligent controller 12 can implement various control functions, for example, a dimming and color mixing function, and if the dimming and color mixing function is to be implemented, the control signals output by the intelligent controller 12 may include: dimming signal, toning signal, ground. Corresponding to the three control signals, five conductive terminals 14 are required to be arranged in each mounting interface 13, and the five conductive terminals 14 are respectively connected with three output ends for outputting dimming signals, color mixing signals and grounding, and a mains supply zero line and a mains supply fire line. Corresponding to the above-mentioned five conductive terminals 14, the lamp module 20 matched with the above-mentioned five conductive terminals 22 are also provided, and the constant current power supply 23 of the lamp module 20 needs to be provided with five input ends, i.e. a dimming signal input end, a color mixing signal input end, a grounding input end, a mains supply zero line input end and a mains supply fire wire input end, which are respectively connected to the five conductive terminals 22, so as to receive the dimming signal, the color mixing signal, the grounding, the mains supply zero line and the mains supply fire wire output by the intelligent controller 12. The dimming and toning functions can be realized based on the structure.
Fig. 9 is a circuit configuration diagram of an intelligent controller according to an embodiment of the present invention. As shown in fig. 9, the intelligent controller 12 may include: the power-down detection circuit comprises a first bridge rectifier circuit BC1, a first diode D1, a power-down detection circuit IC1, a step-down conversion circuit IC2, a voltage stabilizing circuit IC3, a control module M, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first NPN triode Q1, a first PNP triode Q2, a second NPN triode Q3 and a second PNP triode Q4.
The input end of the first bridge rectifier circuit BC1 is respectively connected with a mains supply zero line and a mains supply fire line, the mains supply fire line is connected to the power-down detection circuit IC1 through the first diode D1, the power-down detection circuit IC1 is connected with the control module M, the control module M receives a wireless control signal sent by remote control equipment and outputs a first control signal and a second control signal through a first output end PWMA and a second output end PWMB, and the power-down detection circuit IC1 controls the first control signal and the second control signal output by the control module M to switch states through a switch for detecting the mains supply;
the output end of the first bridge rectifier circuit BC1 is connected with a buck conversion circuit IC2, the buck conversion circuit IC2 outputs a first voltage through the output end, the output end of the buck conversion circuit IC2 is connected with a voltage stabilizing circuit IC3, the voltage stabilizing circuit IC3 outputs a second voltage through the output end, and the input end of the voltage stabilizing circuit IC3 is connected with a control module M to supply power for the control module M; the first control signal may be a dimming and/or toning signal, and the second control signal may be a toning and/or dimming signal.
The output end of the buck conversion circuit IC2 is also connected to the collector electrode of a first NPN triode Q1 through a first resistor R1, the emitter electrode of the first NPN triode Q1 is connected to the emitter electrode of a first PNP triode Q2, the collector electrode of the first PNP triode Q2 is grounded, and the base electrodes of the first NPN triode Q1 and the first PNP triode Q2 are respectively connected to the first output end PWMA of the control module M through a second resistor R2;
the output end of the buck conversion circuit IC2 is also connected to the collector electrode of a second NPN triode Q3 through a first resistor R1 and a third resistor R3, the emitter electrode of the second NPN triode Q3 is connected to the emitter electrode of a second PNP triode Q4, the collector electrode of the second PNP triode Q4 is grounded, and the base electrodes of the second NPN triode Q3 and the second PNP triode Q4 are respectively connected to the second output end PWMB of the control module M through a fourth resistor R4;
the dimming signal output terminal PWM1 for outputting a dimming signal is connected to emitters of the first NPN triode Q1 and the first PNP triode Q2, the toning signal output terminal PWM2 for outputting a toning signal is connected to emitters of the second NPN triode Q3 and the second PNP triode Q4, and the ground output terminal GND for outputting a ground is connected to a collector of the second PNP triode Q4.
In the above circuit, the power failure detection circuit IC1 is mainly used for detecting a switch of the mains supply, and performing voltage reduction after half-wave rectification of the alternating current, and the signal is used for the control module M to detect the switch of the mains supply to realize the switching of the PWMA and PWMB signal output states of the control module, or the definition of other setting functions. The buck converter circuit IC2 is a buck circuit, and can realize, for example, a constant voltage of output DC 5V. The voltage stabilizing circuit IC3 is used for further voltage reduction, for example, DC5V may be reduced to dc3.3v to supply power to the control module M. The control module M is an intelligent control module, and the form of the control module M can be provided with a conventional MCU, an MCU+radio frequency signal, a main control (WIFI, BLE, ZIGBEE) +MCU+radio frequency and other control form modules. The first output end PWMA and the second output end PWMB of the control module M output control signals, when the PWMA and the PWMB output high levels, the first NPN triode Q1 and the second NPN triode Q3 are conducted, the first PNP triode Q2 and the second PNP triode Q4 are cut off, and the dimming signal output end PWM1 and the toning signal output end PWM2 output high levels; when the first output terminal PWMA and the second output terminal PWMB of the control module M output a low level, the first NPN transistor Q1 and the second NPN transistor Q3 are turned off, the first PNP transistor Q2 and the second PNP transistor Q4 are turned on, and the dimming signal output terminal PWM1 and the color mixing signal output terminal PWM2 output a low level. The secondary circuit of the first NPN triode Q1, the first PNP triode Q2, the second NPN triode Q3 and the second PNP triode Q4 is mainly used for amplifying small voltage and small current of a control signal output by the control module M and reinforcing the control signal required by the subsequent module. In a specific implementation, both the buck converter circuit IC2 and the voltage regulator circuit IC3 may be implemented in the form of integrated circuits.
It should be noted that, the circuit structure shown in fig. 9 is designed for realizing the control of multiple lamp modules (contacted by long connecting wires), and the control signal can be increased to realize the same control. As an alternative, the signal increasing part circuit may be integrated on the control module M, so as to reduce the part circuits formed by the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the first NPN triode Q1, the first PNP triode Q2, the second NPN triode Q3, and the second PNP triode Q4. In addition, the method comprises the following steps. If only one or two lamp modules are controlled, the circuits formed by the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the first NPN triode Q1, the first PNP triode Q2, the second NPN triode Q3 and the second PNP triode Q4 can be reduced, and the control can be realized by directly using the control signal output by the control module M.
Fig. 10 shows a circuit configuration diagram of a lamp module according to an embodiment of the present invention, corresponding to the circuit configuration of the intelligent controller shown in fig. 9, which can be used in combination with the circuit configuration diagram. In order to realize the dimming and toning functions, the constant current power supply 23 of the lamp module 20 includes two output ends: the first light source power supply control signal output end and the second light source power supply control signal output end. The lamp module 20 includes a plurality of LED light sources, which are divided into a cold color temperature light source group and a warm color temperature light source group, and the first light source power supply control signal output end and the second light source power supply control signal output end are respectively connected to the cold color temperature light source group and the warm color temperature light source group. Preferably, as shown in fig. 10, the constant current power supply 23 includes: the first high-voltage constant-current chip U1, the second bridge rectifier circuit BC2, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8; the first high-voltage constant-current chip U1 comprises a first power supply pin VCC1, a DIM1 pin, a DIM2 pin, a DS1 pin and a DS2 pin, the input end of the second bridge rectifier circuit BC2 is connected with a grounding input end, a mains supply zero line input end and a mains supply fire line input end, the output end of the second bridge rectifier circuit BC2 is connected to the first power supply pin VCC1 through a fifth resistor R5 and a sixth resistor R6, the DIM1 pin and the DIM2 pin are respectively connected to a dimming signal input end and a color mixing signal input end through a seventh resistor R7 and a fourth resistor R8, and the DS1 pin and the DS2 pin are respectively connected to a first light source power supply control signal output end and a second light source power supply control signal output end.
It should be noted that, based on accurate and reasonable circuit parameter configuration, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, and the eighth resistor R8 in the above circuit may be omitted, that is, the output terminal of the second bridge rectifier BC2 may be directly connected to the first power supply pin VCC1, and the DIM1 pin and the DIM2 pin may be directly connected to the dimming signal input terminal and the toning signal input terminal, respectively.
Optionally, the first high-voltage constant-current chip U1 may further include: the first constant current detection pin CS1, the second constant current detection pin CS2, the first temperature protection pin TP1, the second temperature protection pin TP2, the constant current power supply 23 further includes: a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a first capacitor C1, and a second capacitor C2; the first constant current detection pin CS1 and the second constant current detection pin CS2 are connected to the ground input end through a ninth resistor R9 and a tenth resistor R10, respectively, and the first temperature protection pin TP1 and the second temperature protection pin TP2 are connected to the first light source power supply control signal output end and the second light source power supply control signal output end through an eleventh resistor R11 and a twelfth resistor R12, respectively, and are connected to the ground input end through a first capacitor C1 and a second capacitor C2, respectively.
In the circuit shown in fig. 10, when the signals output from the dimming signal output terminal PWM1 and the toning signal output terminal PWM2 are input to the first high voltage constant current chip U1, the first high voltage constant current chip U1 receives the corresponding signals and changes the output currents of DS1 and DS 2. CS1 and CS2 are used as current detection for constant current (compensation circuit with conventional high voltage core IC inside chip). The temperature protection interface is used for setting an over-temperature protection point.
The circuit of the lamp module provided by the preferred embodiment is mainly constructed around the first high-voltage constant-current chip U1, and the circuit topology structure is mainly applied to the integration of the light source and the driving module. The partial circuit mainly supplies power after mains supply rectification and prompts a light source such as an LED to perform constant current operation. The first high-voltage constant-current voltage chip U1 is internally provided with two linear constant-current driving chips which are highly integrated multi-section linear LED constant-current driving chips capable of adjusting light and color. The chip is provided with dimming signals supporting PWM input and analog input, and can realize adjustment and color mixing of LED current and brightness. The device is mainly used for driving light sources with high power factor, low harmonic wave and low power factor of test point input and lamps of mains supply input. The technology is developed based on a high-voltage linear constant current technology, a plurality of peripheral devices such as electrolytic capacitors, magnetic components and the like can be omitted, the driving PCBA which is greatly beneficial to LED matching can realize a scheme with small volume, long service life and low cost, and the driving PCBA meets the relevant standards of national requirements. The chip integrates an input linearity compensation function. When the commercial power is changed, the chip can automatically adjust and reduce the output current by adding a resistor between the drain electrode of the built-in MOS tube and a capacitor between the drain electrode and GND, so that the power is unchanged. When the input voltage is too high or the output current is too large, the temperature of the chip is too high to fail, the chip has an over-temperature adjusting function, and the output current can be reduced to achieve the effect of cooling the chip.
Fig. 11 is a circuit diagram of a lamp module according to another embodiment of the present invention, and as an alternative to the circuit structure of the lamp module shown in fig. 10, the lamp module 20 may also employ the circuit structure shown in fig. 11. As shown in fig. 11, the lamp module 20 may include: the second high-voltage constant-current chip U2, the third high-voltage constant-current chip U3, the third bridge rectifier circuit BC3, the thirteenth resistor R13, the fourteenth resistor R14, the fifteenth resistor R15, the sixteenth resistor R16, the seventeenth resistor R17 and the eighteenth resistor R18. The second high-voltage constant-current chip U2 includes a second power supply pin VCC2, a DIM3 pin, and a DS3 pin, the third high-voltage constant-current chip U3 includes a third power supply pin VCC3, a DIM4 pin, and a DS4 pin, an input end of the third bridge rectifier BC3 is connected to a ground input end, a mains zero line input end, and a mains fire line input end, an output end of the third bridge rectifier BC3 is connected to the second power supply pin VCC2 through a thirteenth resistor R13 and a fourteenth resistor R14 and is connected to the third power supply pin VCC3 through a fifteenth resistor R15 and a sixteenth resistor R16, the DIM3 pin is connected to a dimming signal input end through a seventeenth resistor R17, the DIM4 pin is connected to a toning signal input end through an eighteenth resistor R18, the DS3 pin is connected to a first light source power supply control signal output end, and the DS4 pin is connected to a second light source power supply control signal output end.
It should be noted that, based on accurate and reasonable circuit parameter configuration, the thirteenth resistor R13, the fourteenth resistor R14, the fifteenth resistor R15, and the sixteenth resistor R16 in the above circuit may be omitted, that is, the third bridge rectifier BC3 may directly supply power to the second high-voltage constant-current chip U2 and the third high-voltage constant-current chip U3.
Optionally, the second high-voltage constant-current chip U2 further includes: the third constant current detection pin CS3, the third temperature protection pin TP3, the third high-voltage constant current chip U3 still includes: the fourth constant current detection pin CS4 and the fourth temperature protection pin TP4, and the constant current power supply 20 further includes: a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a third capacitor C3, and a fourth capacitor C4; the third constant current detection pin CS3 is connected to the ground input end through a nineteenth resistor R19, the fourth constant current detection pin CS4 is connected to the ground input end through a twentieth resistor R20, the third temperature protection pin TP3 is connected to the first light source power supply control signal output end through a twenty-first resistor R21 and is connected to the ground input end through a third capacitor C3, and the fourth temperature protection pin TP4 is connected to the second light source power supply control signal output end through a twenty-second resistor R22 and is connected to the ground input end through a fourth capacitor C4.
The circuit of the lamp module 20 shown in fig. 11 adopts two chips, namely the second high-voltage constant-current chip U2 and the third high-voltage constant-current chip U3, so that the functional requirements on the high-voltage constant-current chips are reduced, but the functions of the circuit of the lamp module 20 shown in fig. 10 are the same.
Fig. 10 and 11 show only the circuit structure of one lamp module 20, and it should be noted that, as shown in fig. 12, the control of a plurality of lamp modules 20 can be implemented based on one intelligent controller 12, and the specific number of the present invention is not limited specifically.
The above embodiments mainly describe that the intelligent controller 12 is used for realizing the dimming and toning functions, and optionally, the intelligent controller 12 can also only realize the dimming function, and can also further realize the full-color function on the basis of the dimming and toning functions. If only the dimming function is implemented, the control signal output by the intelligent controller 12 may include: dimming signal, ground. Corresponding to the two control signals, four conductive terminals 14 are required to be arranged in each mounting interface 13, and the four conductive terminals 14 are respectively connected with two output ends for outputting dimming signals and grounding, and a mains supply zero line and a mains supply fire line. If the full color function is to be further implemented on the basis of the dimming and toning functions, the control signals output by the intelligent controller 12 may include: dimming, toning signal, first full-color control signal, second full-color control signal, ground. Corresponding to the five control signals, seven conductive terminals 14 are required to be arranged in each mounting interface 13, and the seven conductive terminals 14 are respectively connected with five output ends of the output dimming signal, the color mixing signal, the first full-color control signal, the second full-color control signal and the ground, and the mains supply zero line and the mains supply fire line.
Corresponding to the intelligent controller 12 with different functions, the circuit of the lamp module 20 is also adjusted accordingly. When the mounting interface 13 is provided with four conductive terminals 14, the constant current power supply 23 in the lamp module 20 is correspondingly provided with four input ends, including: the light modulation signal input end, the grounding input end, the mains supply zero line input end and the mains supply fire line input end. The lamp module 20 is also provided with four conductive terminals 22, which are respectively connected with the dimming signal input end, the grounding input end, the mains zero line input end and the mains fire line input end. When the installation interface 13 is provided with seven conductive terminals 14, the constant current power supply 23 in the lamp module 20 is correspondingly provided with seven input ends, including: the device comprises a dimming signal input end, a color mixing signal input end, a grounding input end, a mains supply zero line input end and a mains supply fire line input end. The lamp module 20 is also provided with seven conductive terminals 22, which are respectively connected with a dimming signal input end, a color mixing signal input end, a grounding input end, a mains zero line input end and a mains fire line input end.
The de-powered lamp mounting rack 10 and the lamp module 20 including the power source and the light source provided in the above embodiment can be applied to a plurality of different types of lamps, such as western style pseudo-classic lamps, festive lamps, flat lamps, advertisement version lamps, spot lamps, etc., and for different lamp types, the shapes of the rack body 11 of the lamp mounting rack 10 are different, and the setting positions of the intelligent controller 12 and the mounting interface 13 on the rack body 11 are also different.
Taking western style retro lamps and lanterns, festive lamps as an example, as shown in fig. 13, a suction top box 111 may be disposed on a frame 11, the frame 11 includes a main body 112 and a plurality of branches 113 extending from the main body 112, the suction top box 111 is integrally disposed or suspended with the main body 112, the frame 11 is fixed to a mounting surface through the suction top box 111, and a plurality of mounting interfaces 13 are respectively disposed on the plurality of branches 113. And for the intelligent controller 12, it may be disposed in the suction top box 111 or in the main body 112. The conductive terminals in each mounting interface 13 are connected to the output of the intelligent controller 12 and to the mains fire, mains zero lines by connection lines, which may be provided inside the main body 112, the branches 113.
Taking a down lamp as an example, as shown in fig. 14, the frame 11 may be configured as a cylinder, a mounting mechanism 116 for fixing the cylinder frame to a mounting surface is provided on an outer side surface of the cylinder frame 11, the intelligent controller 12 is provided on an outer side bottom surface of the cylinder frame 11, and one or more mounting interfaces 13 are provided on an inner side bottom surface of the cylinder frame 11.
Corresponding to the western style pseudo-classic lamp, festive lantern or down lamp described above, as shown in fig. 15, the assembly frame 21 of the lamp module 20 used in cooperation with the former may be configured as a tube, the constant current power supply 23 may be disposed at one end or inside the tube-shaped assembly frame 21, and the one or more light sources 24 may be disposed on the outer surface of the tube-shaped assembly frame 21. The lamp module 20 is shaped like a corn cob as a whole, and is mainly suitable for western style ancient lamps, festive lamps, spot lamps and the like. As shown in fig. 16, the lamp module 20 may also be designed in a candle shape.
Taking a flat lamp as an example, as shown in fig. 17 and 18, the frame 11 may be provided in a flat plate shape, one surface of the flat frame 11 is provided with a mounting mechanism for fixing the flat frame 11 to a mounting surface in parallel, and the other surface of the flat frame 11 is provided with an intelligent controller 12 and one or more mounting interfaces 13. Of course, the shape of the flat plate-shaped frame 11 can be freely set according to different design requirements, and the present invention is not particularly limited.
Taking an advertising board lamp as an example, the frame 11 may be provided in a flat plate shape, one edge of the flat plate-shaped frame 11 is provided with a mounting mechanism for vertically fixing the flat plate-shaped frame 11 to a mounting surface, either side of the flat plate-shaped frame 11 is provided with an intelligent controller 12, and both sides of the flat plate-shaped frame 11 are provided with one or more mounting interfaces 13.
Corresponding to the above-described flat lamp or advertisement board lamp, as shown in fig. 19, the assembly frame 21 of the lamp module 20 used in cooperation therewith may be provided in a band shape, that is, a power supply substrate, and the constant current power supply 23 may be provided on one end of the band-shaped assembly frame 21, and the one or more light sources 24 may be provided on one face of the band-shaped assembly frame 21. The lamp module 20 is mainly suitable for flat lamps, advertisement lamps and the like.
According to the technical scheme provided by the embodiment of the invention, the power-off of the lamp mounting frame is realized, and only the intelligent controller is required to be arranged in the lamp mounting frame, so that the space required by a circuit on the lamp mounting frame is greatly reduced, and more space is provided for the appearance modeling of the lamp. The constant current power supply and the light source form the lamp module, the lamp module is taken as a whole, can be installed through the installation interface arranged on the lamp installation frame, and is connected through the conductive terminals arranged in the installation interface, so that the installation and the disassembly are very convenient. By using the lamp mounting frame and the lamp module, the design space of the lamp on the appearance modeling is larger, and more beautiful modeling can be realized.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (8)
1. A high-voltage constant-current chip configured to receive an externally input dimming and toning signal, and output a light source power supply control signal according to the received dimming and toning signal, so as to realize adjustment and color mixing of light source current and brightness;
wherein, the high-voltage constant-current chip includes: a power pin for receiving an operating voltage, DIM1 and DIM2 pins for receiving the dimming and toning signals, and DS1 and DS2 pins for outputting the light source power supply control signals;
the high-voltage constant-current chip further comprises a CS1 pin and a CS2 pin which are used for current detection and constant current.
2. A constant current power supply comprising: the first high-voltage constant-current chip and the second bridge rectifier circuit;
the first high-voltage constant-current chip comprises a first power supply pin, a DIM1 pin, a DIM2 pin, a DS1 pin and a DS2 pin, wherein the input end of the second bridge rectifier circuit is connected with a grounding input end, a mains zero line input end and a mains fire line input end, the output end of the second bridge rectifier circuit is connected to the first power supply pin, the DIM1 pin and the DIM2 pin are respectively connected to a dimming signal input end and a color mixing signal input end, and the DS1 pin and the DS2 pin are respectively connected to a first light source power supply control signal output end and a second light source power supply control signal output end;
Wherein, first high voltage constant current chip still includes: the constant current power supply comprises a first constant current detection pin and a second constant current detection pin, and further comprises: a ninth resistor and a tenth resistor; the first constant current detection pin and the second constant current detection pin are connected to the ground input end through the ninth resistor and the tenth resistor respectively.
3. The constant current power supply according to claim 2, further comprising: fifth resistor, sixth resistor, seventh resistor, eighth resistor;
the output end of the second bridge rectifier circuit is connected to the first power supply pin through the fifth resistor and the sixth resistor, and the DIM1 pin and the DIM2 pin are connected to the dimming signal input end and the color mixing signal input end through the seventh resistor and the eighth resistor respectively.
4. A constant current power supply according to claim 2 or 3, wherein the first high voltage constant current chip further comprises: the constant current power supply further comprises a first temperature protection pin and a second temperature protection pin: an eleventh resistor, a twelfth resistor, a first capacitor, and a second capacitor;
the first temperature protection pin and the second temperature protection pin are connected to the first light source power supply control signal output end and the second light source power supply control signal output end through the eleventh resistor and the twelfth resistor respectively and connected to the grounding input end through the first capacitor and the second capacitor respectively.
5. A high-voltage constant-current chip configured to receive an externally input dimming signal or a toning signal, and output a light source power supply control signal according to the received dimming signal or toning signal, so as to realize adjustment of light source current and brightness and color mixing;
wherein, the high-voltage constant-current chip includes: a power pin for receiving an operating voltage, a DIM3 pin for receiving the dimming signal or a DIM4 pin for receiving the color mixing signal, and a DS3 pin or a DS4 pin for outputting the light source power supply control signal;
the high-voltage constant-current chip further comprises a CS3 pin or a CS4 pin which is used for current detection and constant current.
6. A constant current power supply comprising: the second high-voltage constant-current chip, the third bridge rectifier circuit, the seventeenth resistor and the eighteenth resistor;
the second high-voltage constant current chip comprises a second power supply pin, a DIM3 pin and a DS3 pin, the third high-voltage constant current chip comprises a third power supply pin, a DIM4 pin and a DS4 pin, the input end of the third bridge rectifier circuit is connected with a grounding input end, a mains zero line input end and a mains fire line input end, the output end of the third bridge rectifier circuit is connected to the second power supply pin and is simultaneously connected to the third power supply pin, the DIM3 pin is connected to a dimming signal input end through the seventeenth resistor, the DIM4 pin is connected to a color mixing signal input end through the eighteenth resistor, the DS3 pin is connected to a first light source power supply control signal output end, and the DS4 pin is connected to a second light source power supply control signal output end;
The second high-voltage constant-current chip further comprises a third constant-current detection pin; the third high-voltage constant-current chip further comprises a fourth constant-current detection pin; the constant current power supply further comprises: nineteenth resistance, twentieth resistance; wherein the method comprises the steps of
The third constant current detection pin is connected to the ground input terminal through the nineteenth resistor, and the fourth constant current detection pin is connected to the ground input terminal through the twentieth resistor.
7. The constant current power supply of claim 6, further comprising: thirteenth, fourteenth, fifteenth, sixteenth and sixteenth resistors;
the output end of the third bridge rectifier circuit is connected to the second power supply pin through the thirteenth resistor and the fourteenth resistor and connected to the third power supply pin through the fifteenth resistor and the sixteenth resistor.
8. The constant current power supply according to claim 6 or 7, wherein the second high-voltage constant current chip further comprises: the third temperature protection pin, the third high voltage constant current chip still includes: the fourth temperature protection pin, the constant current power supply still includes: a twenty-first resistor, a twenty-second resistor, a third capacitor, and a fourth capacitor;
The third temperature protection pin is connected to the first light source power supply control signal output end through the twenty-first resistor and connected to the ground input end through the third capacitor, and the fourth temperature protection pin is connected to the second light source power supply control signal output end through the twenty-second resistor and connected to the ground input end through the fourth capacitor.
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