CN207262368U - A kind of four linear constant-current LED light source board - Google Patents

Abstract

The utility model discloses a kind of four linear constant-current LED light source board,Including substrate,Substrate is provided with as voltage increases the 4th light source module group lighted successively,3rd light source module group,Secondary light source module,First light source module group,Substrate is additionally provided with JXC3000B chips,The JXC3000B chips respectively with the 4th light source module group,3rd light source module group,Secondary light source module,First light source module group connects,The annular that LED light emitting diodes are lined up in 3rd light source module group is arranged at the annular inner side that LED light emitting diodes are lined up in the 4th light source module group,The annular that LED light emitting diodes are lined up in secondary light source module is arranged at the annular inner side that LED light emitting diodes are lined up in the 3rd light source module group,The annular that LED light emitting diodes are lined up in first light source module group is arranged at the annular inner side that LED light emitting diodes in secondary light source module are lined up.

Description

A kind of four linear constant-current LED light source board

Technical field

A kind of LED light source board is the utility model is related to, particularly a kind of four linear constant-current LED light source board.

Background technology

LED light source is the light source that light emitting diode is illuminator, has the characteristics that efficient, long lifespan.Light emitting diode In in the 1960s, in subsequent many decades, its basic purposes is the indicator light as electronic equipments such as radio cassette players for invention； It can be used continuously 100,000 hours, be steeped than ordinary incandescent lamp 100 times long.LED light source mainly has annular light source, stripe shape light source, line style Several classes such as light source, hollow light source, backlight, outer axis reflector light source, interior coaxial point source of light, dome-type ridge Lacquer finish source.But Conventional LED light sources generally relatively stablize operating voltage requirement, and when external voltage fluctuations are larger, LED light source will be unable to send light Line is illuminated, this causes many inconveniences when in use.

Utility model content

To solve the above problems, the purpose of this utility model is to provide a kind of four linear constant-current LED light source board, according to The bright corresponding light source module group of height of external voltage is inputted, can still be worked normally in the larger environment of voltage fluctuation.

Technical solution is used by the invention for solving the technical problem：A kind of four linear constant-current LED light source board, including Substrate, substrate be provided with voltage increase the 4th light source module group lighted successively, the 3rd light source module group, secondary light source module, First light source module group, substrate are additionally provided with JXC3000B chips, the JXC3000B chips respectively with the 4th light source module group, the 3rd Light source module group, secondary light source module, the connection of the first light source module group, the 4th light source module group, the 3rd light source module group, secondary light source module And the first LED LED rows in light source module group circularize, the ring that LED light emitting diodes are lined up in the 3rd light source module group Shape is arranged at the annular inner side that LED light emitting diodes are lined up in the 4th light source module group, LED light-emitting diodes in secondary light source module The annular that pipe is lined up is arranged at the annular inner side that LED light emitting diodes are lined up in the 3rd light source module group, in the first light source module group The annular that LED light emitting diodes are lined up is arranged at the annular inner side that LED light emitting diodes in secondary light source module are lined up.

Further, three JXC3000B chips are provided with substrate, each JXC3000B chips are respectively connected with electricity Pressure increases the 4th light source module group, the 3rd light source module group, secondary light source module, the first light source module group lighted successively, and all four LED light emitting diodes in light source module group line up an annular, and the LED light emitting diodes in all 3rd light source module groups line up one A annular, the LED light emitting diodes in all secondary light source modules line up an annular, the LED in all first light source module groups Light emitting diode lines up an annular, and the annular that LED light emitting diodes are lined up in the 3rd light source module group is arranged at the 4th light source die The annular inner side that LED light emitting diodes are lined up in group, the annular that LED light emitting diodes are lined up in secondary light source module are arranged at The annular inner side that LED light emitting diodes are lined up in 3rd light source module group, LED light emitting diodes are lined up in the first light source module group Annular is arranged at the annular inner side that LED light emitting diodes in secondary light source module are lined up.

Further, three JXC3000B chips are provided with substrate, each JXC3000B chips are respectively connected with electricity Pressure increases the 4th light source module group, the 3rd light source module group, secondary light source module, the first light source module group lighted successively, and LED shines two Pole pipe another kind arrangement architecture is to line up the LED light emitting diodes in the 4th light source module group of single JXC3000B chips connection Straight line, the LED light emitting diodes in the 3rd light source module group of single JXC3000B chips connection are arranged in a line, single Light emitting diode in the secondary light source module of JXC3000B chips connection is arranged in a line, single JXC3000B chips connection The first light source module group in light emitting diode arrange in a line, the light emitting diode of single JXC3000B chips connection is lined up One small rectangle, the small rectangle that the light emitting diode of three JXC3000B chips connections is lined up line up a big rectangle.

The beneficial effects of the utility model are：The utility model is a kind of four linear constant-current LED light source board, this practicality is new Type is controlled as voltage increases the 4th light source module group lighted successively, the 3rd light source module group, second by JXC3000B chips Light source module group, the first light source module group, different light source module groups are lighted according to the height of external input voltage so that LED light source board It can still be worked normally in the larger environment of voltage fluctuation；The utility model LED light emitting diodes are arranged using above two Structure, not only wiring is simple, is conducive to connect up, and even if when voltage reduction, only lights a part of LED light-emitting diodes therein Pipe, still can ensure the use of LED lamp；The utility model uses above two arrangement, if for no other reason than that voltage The LED light emitting diodes for the first light source module group of having gone out are reduced, the illumination effect of LED lamp changes very little, and naked eyes are difficult to discover.

Brief description of the drawings

The utility model is described in further detail with example below in conjunction with the accompanying drawings.

Fig. 1 is the utility model structure chart；

Fig. 2 is the structure chart of another embodiment of the utility model；

Fig. 3 is the circuit diagram of the utility model；

Fig. 4 is the cut-away view of JXC3000B chips.

Embodiment

Fig. 1 is the utility model structure chart, and Fig. 2 is the structure chart of another embodiment of the utility model, and Fig. 3 is this practicality New circuit diagram, Fig. 4 are the cut-away views of JXC3000B chips 1, and as shown in Figures 1 to 4, a kind of four linear is permanent LED light source board is flowed, including substrate 24, substrate 24 are provided with as voltage increases the 4th light source module group 5 lighted successively, the 3rd light Source module 4, secondary light source module 3, the first light source module group 2, substrate 24 are additionally provided with JXC3000B chips 1, the JXC3000B Chip 1 is connected with the 4th light source module group 5, the 3rd light source module group 4, secondary light source module 3, the first light source module group 2 respectively, the 4th light LED LED rows cyclization in source module 5, the 3rd light source module group 4,3 and first light source module group 2 of secondary light source module Shape, the annular that LED light emitting diodes are lined up in the 3rd light source module group 4 are arranged at LED LED rows in the 4th light source module group 5 Into annular inner side, the annular that LED light emitting diodes are lined up in secondary light source module 3 is arranged at LED in the 3rd light source module group 4 The annular inner side that light emitting diode is lined up, the annular that LED light emitting diodes are lined up in the first light source module group 2 are arranged at the second light The annular inner side that LED light emitting diodes are lined up in source module 3.The utility model by JXC3000B chips 1 come control with Voltage increases the 4th light source module group 5, the 3rd light source module group 4, secondary light source module 3, the first light source module group 2 lighted successively, root Different light source module groups is lighted according to the height of external input voltage so that LED light source board in the larger environment of voltage fluctuation still It can work normally；The utility model LED light emitting diodes use above two arrangement, and not only wiring is simple, is conducive to Wiring, and even if when voltage reduction, only light a part of LED light emitting diodes therein, still can ensure LED lamp Use；The utility model uses above two arrangement, if for no other reason than that voltage reduces the first light source module group 2 of having gone out LED light emitting diodes, the illumination effect of LED lamp change very little, and naked eyes are difficult to discover.

Preferably, three JXC3000B chips 1, each JXC3000B chips 1 are provided with the substrate 24 of the utility model It is respectively connected with as voltage increases the 4th light source module group 5 lighted successively, the 3rd light source module group 4, secondary light source module 3, One light source module group 2, the LED light emitting diodes in all 4th light source module groups 5 line up an annular, all 3rd light source module groups 4 In LED light emitting diodes line up an annular, the LED light emitting diodes in all secondary light source modules 3 line up an annular, LED light emitting diodes in all first light source module groups 2 line up an annular, LED LED rows in the 3rd light source module group 4 Into annular be arranged at the annular inner side that LED light emitting diodes are lined up in the 4th light source module group 5, LED in secondary light source module 3 The annular that light emitting diode is lined up is arranged at the annular inner side that LED light emitting diodes are lined up in the 3rd light source module group 4, the first light The annular that LED light emitting diodes are lined up in source module 2 is arranged at the annular that LED light emitting diodes are lined up in secondary light source module 3 Inner side.Three JXC3000B chips 1 are provided with substrate 24, each JXC3000B chips 1 are respectively connected with as voltage increases Height the 4th light source module group 5, the 3rd light source module group 4, secondary light source module 3, the first light source module group 2 lighted successively, LED shine two Pole pipe another kind arrangement architecture is the LED LED rows in the 4th light source module group 5 for connecting single JXC3000B chips 1 In alignment, the LED light emitting diodes in the 3rd light source module group 4 that single JXC3000B chips 1 connect are arranged in a line, Light emitting diode in the secondary light source module 3 that single JXC3000B chips 1 connect is arranged in a line, single JXC3000B cores Light emitting diode in the first light source module group 2 that piece 1 connects is arranged in a line, and what single JXC3000B chips 1 connected shines Diode lines up a small rectangle, and the small rectangle that the light emitting diode that three JXC3000B chips 1 connect is lined up is lined up one big Rectangle.

Preferably, LED light source module 25 and JXC3000B chips 1, the LED are provided with the substrate 24 of the utility model Light source module group 25 includes multiple LED light emitting diodes, and the outside of LED light source module 25 and JXC3000B chips 1, which is enclosed with, to be used for Strengthen the point glue-line of water resistance.The utility model drives LED light emitting diodes using JXC3000B chips 1, due to JXC3000B chips 1 are small, therefore directly can weld JXC3000B chips 1 on substrate 24, and carry out water-proofing treatment, The point glue-line for strengthening water resistance is enclosed with the outside of JXC3000B chips 1 and LED light emitting diodes, is not only strengthened The water resistance of LED light source board, and water-proofing treatment process is simplified, reduce water-proofing treatment cost.

Preferably, the LED light source module 25 of the utility model includes the first light source module group 2, secondary light source module the 3, the 3rd 4 and the 4th light source module group 5 of light source module group, the first light source module group 2, secondary light source module 3, the 3rd light source module group 4 and the 4th Light source module group 5 is composed in series by more than one LED light emitting diodes head and the tail, and the cathode of the first light source module group 2 is connected to No. 2 pins of JXC3000B chips 1, the anode of the first light source module group 2 are connected to No. 1 pin of JXC3000B chips 1, the second light The cathode of source module 3 is connected to No. 3 pins of JXC3000B chips 1, and the anode of secondary light source module 3 is connected to JXC3000B cores No. 2 pins of piece 1, the cathode of the 3rd light source module group 4 are connected to No. 4 pins of JXC3000B chips 1, the 3rd light source module group 4 Anode is connected to No. 3 pins of JXC3000B chips 1, and the anode of the 4th light source module group 5 is connected to No. 4 of JXC3000B chips 1 Pin.The utility model controls LED light by using JXC3000B chips 1, and driver is small, not only so that peripheral circuit Become simpler, and reduce the volume of lamps and lanterns；The utility model controls LED light by using JXC3000B chips 1, Corresponding light source module group is lighted according to the change of external voltage, still can be just under the larger environment of scope range of the fluctuation of voltage Often work.

Preferably, the utility model further includes resistance Rb, resistance Rcs, AC power, the first diode 6, the second diode 7th, the 3rd diode 8 and the 4th diode 9, the anode of the first light source module group 2 are connected to JXC3000B chips 1 by resistance Rb No. 8 pins；No. 5 pins of JXC3000B chips 1 are grounded by resistance Rcs, and No. 7 pins of JXC3000B chips 1 directly connect Ground；The AC power includes being used for the first port 10 and second port 11 for exporting alternating current, and the cathode of the first diode 6 is straight Ground connection, the anode of the first diode 6 are connected to first port 10, and the cathode of the second diode 7 is directly grounded, the second diode 7 anode is connected to second port 11, and the cathode of the 3rd diode 8 is connected to first port 10, and the anode of the 3rd diode 8 connects The cathode of the 4th light source module group 5 is connected to, the cathode of the 4th diode 9 is connected to second port 11, and the anode of the 4th diode 9 connects It is connected to the cathode of the 4th light source module group 5.The utility model is provided with 3 JXC3000B chips 1, and each JXC3000B chips 1 are equal It is connected with above-mentioned component.

Preferably, the JXC3000B chips 1 of the utility model include high-voltage power supply circuit 12, reference circuit 13, voltage benefit Repay circuit 14, excess temperature compensation circuit 15, the first operational amplifier 16, the second operational amplifier 17, the 3rd operational amplifier 18, Four-operational amplifier 19, the first field-effect tube 20, the second field-effect tube 21, the 3rd field-effect tube 22 and the 4th field-effect tube 23, reference circuit 13 is connected with voltage compensating circuit 14, excess temperature compensation circuit 15, high-voltage power supply circuit 12 respectively, voltage compensation Circuit 14 is connected to the VD pins of JXC3000B chips 1, and high-voltage power supply circuit 12 is connected to the drain electrode of the 4th field-effect tube 23, the The in-phase input end of one operational amplifier 16, the in-phase input end of the second operational amplifier 17, the 3rd operational amplifier 18 it is same The in-phase input end of phase input terminal and four-operational amplifier 19 is connected respectively to reference circuit 13, the first operational amplifier 16 Inverting input, the inverting input of the second operational amplifier 17, the inverting input of the 3rd operational amplifier 18 and The inverting input of four-operational amplifier 19 is connected to the CS pins of JXC3000B chips 1, the output of the first operational amplifier 16 End is connected to the grid of the first field-effect tube 20, and the output terminal of the second operational amplifier 17 is connected to the grid of the second field-effect tube 21 Pole, the output terminal of the 3rd operational amplifier 18 are connected to the grid of the 3rd field-effect tube 22, the output of four-operational amplifier 19 End is connected to the grid of the 4th field-effect tube 23, the source electrode of the first field-effect tube 20, the source electrode of the second field-effect tube 21, the 3rd The source electrode of effect pipe 22 and the source electrode of the 4th field-effect tube 23 are connected to the CS pins of JXC3000B chips 1, the first field-effect The drain electrode of pipe 20 is connected to the D1 pins of JXC3000B chips 1, and the drain electrode of the second field-effect tube 21 is connected to JXC3000B chips 1 D2 pins, the drain electrode of the 3rd field-effect tube 22 is connected to the D3 pins of JXC3000B chips 1, the drain electrode of the 4th field-effect tube 23 It is connected to the D4 pins of JXC3000B chips 1.

JXC3000B chips 1 are High Power Factor linear constant current LED drive chips, are integrated with genotron and JFET high Pressure power supply, applied to field of LED illumination, single chip supports 20W applications.The chip is real by unique current constant control technology For existing constant current accuracy within positive and negative 5 percent, output current can have high PF and low THD by external CS resistance adjustments, chip. JXC3000B chips 1 are without transformer and high-voltage electrolytic capacitor, and system structure is simple, and performance is stablized, and Surge handling capability is strong, system It can bear 900V surge residual voltages.Conveniently realize LED illumination scheme mass operation.JXC3000B chips 1 are integrated with input line electricity Compensation function is pressed, when input line voltage is excessive, output current is reduced by external compensation resistance, ensures that input power is basic Do not change with line voltage；The also integrated excess temperature regulatory function of JXC3000B chips 1, when internal temperature is more than 125 degrees Celsius, is reduced defeated Go out electric current.

JXC3000B chips 1 are LED constant current drive control circuits, are internally integrated LED constant current control module, high drive etc. Function module.Upon power-up of the system, D1 is by internal high pressure JFET to chip power supply, and chip starts after D1 voltages are more than 5V Work.JXC3000B chips 1 change according to busbar voltage and change the LED lamp bead number of access.In whole ac cycle, with The rising of busbar voltage, gradually lights every level-one LED light string, while electric current increases step by step, realizes high PF and low THD. JXC3000B chips 1 are general and the collocation of high pressure lamp bead uses, it is desirable to which total lamp string crimps nearly input voltage.In VIN=220Vac Application scenario, such as uses 18V lamp beads, generally requires 14 lamp beads and work 5：5：2：2 or 7：4：2：1 ratio is arranged.When input electricity When pressing through high, in order to reduce loss, JXC3000B chips 1 detect D4 voltages by VD, reduce output current, ensure input power Substantially do not change with input voltage.Reduce the amplitude of electric current, can be by the Rd resistance adjustments between VD and D4, relational expression：VREF4 =0.89-Vd4*1.6K Ω/Rd, Rd are generally located on 390K or so.

JXC3000B chips 1 have overheat regulatory function, when chip internal temperature reaches 125 degrees Celsius, reduce output Electric current, so as to control output power and temperature rise, improves the reliability of system.1 working stability of JXC3000B chips, it is miscellaneous from power grid Wave interference, Surge handling capability are strong.Under normal circumstances, the quantity of the first cluster of lamps, ornamental pearl is somewhat increased, system can bear the wave of more than 1KV Gush residual voltage.Pressurize the quick requirement that can be crossed 1.5KV surges, meet indoor lamp.The special protection devices such as prime increase CMS/TVS Part, can the light high performance requirements crossed 3000V surges, meet outdoor lighting.Enhancing heat-sinking capability is arranged at 1 bottom of JXC3000B chips Heat sink, vacantly or GND can be connected to, covering copper with aluminum substrate or PCB as far as possible is contacted, and reaches good heat dissipation effect Fruit.The power ground wire of the current sampling resistor of JXC3000B chips 1 is as short as possible.

The characteristics of JXC3000B chips 1：Peripheral drive circuit is simple, driver is small；Without electrolytic capacitor and magnetism Element, performance are stablized；Input line voltage compensation function；Built-in excess temperature regulatory function；Surge handling capability is strong, can bear 900V surges Residual voltage；Positive and negative 5 percent adjustable output current precision；Maximum output current 110mA；Single chip supports 20W applications；It is more Outputting current steadily when chip is used in parallel；Encapsulated using ESOP8.

The preferred embodiment of the above, simply the utility model, the utility model are not limited to above-mentioned implementation Mode, as long as it reaches the technique effect of the utility model with identical means, should all belong to the scope of protection of the utility model.

Claims (3)

1. A kind of 1. four linear constant-current LED light source board, it is characterised in that：Including substrate, substrate be provided with voltage increase according to Secondary the 4th light source module group, the 3rd light source module group, secondary light source module, the first light source module group lighted, substrate are additionally provided with JXC3000B chips, the JXC3000B chips respectively with the 4th light source module group, the 3rd light source module group, secondary light source module, One light source module group connects, the LED in the 4th light source module group, the 3rd light source module group, secondary light source module and the first light source module group LED row circularizes, and the annular that LED light emitting diodes are lined up in the 3rd light source module group is arranged in the 4th light source module group The annular inner side that LED light emitting diodes are lined up, the annular that LED light emitting diodes are lined up in secondary light source module are arranged at the 3rd The annular inner side that LED light emitting diodes are lined up in light source module group, the annular that LED light emitting diodes are lined up in the first light source module group It is arranged at the annular inner side that LED light emitting diodes in secondary light source module are lined up.
2. A kind of 2. four linear constant-current LED light source board according to claim 1, it is characterised in that：Three are provided with substrate A JXC3000B chips, each JXC3000B chips be respectively connected with voltage increase light successively the 4th light source module group, 3rd light source module group, secondary light source module, the first light source module group, the LED light emitting diodes in all 4th light source module groups are lined up One annular, the LED light emitting diodes in all 3rd light source module groups line up an annular, in all secondary light source modules LED light emitting diodes line up an annular, and the LED light emitting diodes in all first light source module groups line up an annular, and the 3rd The annular that LED light emitting diodes are lined up in light source module group is arranged at the annular that LED light emitting diodes are lined up in the 4th light source module group Inner side, the annular that LED light emitting diodes are lined up in secondary light source module is arranged at LED light emitting diodes in the 3rd light source module group The annular inner side lined up, the annular that LED light emitting diodes are lined up in the first light source module group are arranged at LED in secondary light source module The annular inner side that light emitting diode is lined up.
3. A kind of 3. four linear constant-current LED light source board according to claim 1, it is characterised in that：Three are provided with substrate A JXC3000B chips, each JXC3000B chips be respectively connected with voltage increase light successively the 4th light source module group, 3rd light source module group, secondary light source module, the first light source module group, LED light emitting diode another kind arrangement architectures are will be single LED light emitting diodes in 4th light source module group of JXC3000B chips connection are arranged in a line, single JXC3000B chips LED light emitting diodes in 3rd light source module group of connection are arranged in a line, the second light of single JXC3000B chips connection Light emitting diode in the module of source is arranged in a line, and luminous two in the first light source module group of single JXC3000B chips connection Pole pipe is arranged in a line, and the light emitting diode of single JXC3000B chips connection lines up a small rectangle, three JXC3000B The small rectangle that the light emitting diode of chip connection is lined up lines up a big rectangle.