CN108575006A - A kind of LED light source of COB encapsulation - Google Patents
A kind of LED light source of COB encapsulation Download PDFInfo
- Publication number
- CN108575006A CN108575006A CN201710137511.1A CN201710137511A CN108575006A CN 108575006 A CN108575006 A CN 108575006A CN 201710137511 A CN201710137511 A CN 201710137511A CN 108575006 A CN108575006 A CN 108575006A
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- Prior art keywords
- circuit group
- resistance
- pin
- led
- led lamp
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005538 encapsulation Methods 0.000 title claims abstract description 18
- 239000011324 bead Substances 0.000 claims abstract description 41
- 230000003139 buffering effect Effects 0.000 claims abstract description 19
- 238000013016 damping Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention provides a kind of LED light source of COB encapsulation, including being set to integrated COB on pieces ac input end, AC to DC bridge circuit group, damping current-limiting circuit group, LED lamp bead illuminating circuit group and buffering landing circuit group, the ac input end, the AC to DC bridge circuit group, the damping current-limiting circuit group, the LED lamp bead illuminating circuit group and buffering landing circuit group are sequentially connected, and the AC to DC bridge circuit group is further connected with buffering landing circuit group.The LED light source of the COB encapsulation of the present invention has the advantages that small power consumption and calorific value is low.
Description
Technical field
The invention belongs to the LED light sources that LED field more particularly to a kind of COB encapsulate.
Background technology
LED encapsulation is an important link of LED lamp bead production, currently, high-power LED lamp bead generally uses patch type
(SMD) it encapsulates, although this packaged type Technical comparing is ripe, it needs to secure the wafer in forms independently on lead frame
Device, then the device of multiple separation is soldered on substrate (pcb board) again, there are complex process, of high cost, thermal resistance is big etc.
Disadvantage, for this purpose, tending to encapsulate (COB) technology on development plate in the industry.
Currently, the LED light source of COB encapsulation is always all with Switching Power Supply or capacitance-resistance power drives, power supply complexity, power consumption
Greatly, occupancy volume is big, large area aluminium is needed to radiate, and is easy to cause LED circuit and burns.
Invention content
Present invention aims at the LED light sources encapsulated for existing COB, provide a kind of small power consumption
And the LED light source of the low COB encapsulation of calorific value.
To solve the above problems, the present invention adopts the following technical scheme that：
A kind of LED light source of COB encapsulation comprising be set to integrated COB on pieces ac input end, AC to DC bridge electricity
Road group, damping current-limiting circuit group, LED lamp bead illuminating circuit group and buffering landing circuit group, the ac input end, the exchange
Inversion of direct current bridge circuit group, the damping current-limiting circuit group, the LED lamp bead illuminating circuit group and the buffering landing circuit group according to
Secondary connection, the AC to DC bridge circuit group are further connected with buffering landing circuit group.
In the embodiment of the present invention, the AC to DC bridge circuit group is by protection circuit, rectification circuit and High frequency filter electricity
Road forms.
In the embodiment of the present invention, the rectification circuit is the rectifier bridge being made of diode D1, D2, D3, D4, the high frequency
Filter circuit is made of inductance L1, L2 and capacitance C1, described protection electricity routing resistance R1, R2 and diode D5 compositions, inductance L1
One end and one end of inductance L2 be connected respectively with the zero terminal of the ac power input end and fire line terminal, inductance L1
The other end and the other end of inductance L2 be connected respectively with the both ends of the capacitance C1, the rectifier bridge includes that two alternating currents are defeated
Enter end, ground terminal and output end, two AC inputs of the rectifier bridge are connected with the both ends of capacitance C1 respectively, described whole
The ground terminal ground connection of bridge is flowed, the output end of the rectifier bridge is connected with the anode and resistance R1 of diode D5 respectively, resistance R1
It is grounded by resistance R2.
In the embodiment of the present invention, the LED lamp bead illuminating circuit group includes 3 groups of LED illuminating circuits being sequentially connected in series, each
Group LED illuminating circuits include multiple LED lamp beads being connected in series with, and 3 groups of LED illuminating circuits composition is one or more to shine
Face.
In the embodiment of the present invention, the damping current-limiting circuit group includes constant current chip RLD1301, resistance R3 and resistance R4,
One end of the pin 1 of the constant current chip RLD1301, pin 2 and resistance R3 is connected with the cathode of diode D5 respectively, resistance
The other end of R3 is connected with one end of the pin 3 of the constant current chip RLD1301 and resistance R4 respectively, the other end of resistance R4
Be connected respectively with the pin 4 of the constant current chip RLD1301 and pin 5, and be connected to buffering landing circuit group and
The LED lamp bead illuminating circuit group.
In the embodiment of the present invention, the buffering landing circuit group includes voltage control chip I L2308, resistance R6, resistance
R7, resistance R8, the pin 1 of the voltage control chip I L2308, pin 2, pin 4 respectively with the LED lamp bead illuminating circuit
The last one LED lamp bead of three groups of LED illuminating circuits of group is connected, and the pin 3 of the voltage control chip I L2308 passes through
Resistance R5 is connected with the pin 4 of the constant current chip RLD1301 and pin 5, the pin 3 of the voltage control chip I L2308
Also it is connected with the tie point for two LED lamp beads for being series at least significant end in the LED lamp bead illuminating circuit group, the voltage control
The pin 5 of coremaking piece IL2308 is grounded, the pin 6 and pin 7 of the voltage control chip I L2308 respectively by resistance R7 and
The pin 8 of resistance R8 ground connection, the voltage control chip I L2308 controls chip I L2308's by resistance R6 and the voltage
Pin 4 is connected.
Compared with prior art, input effect of the integrated COB pieces of the LED light source of COB of the invention encapsulation is high, generates heat
Measure low, unit area can carry the power of bigger, be suitable for floodlight, the beam light source of the small light-emitting surface of big wattage；Using exclusive
Temperature control system, be autonomous Design phaselocked loop in enclosed.Temperature is accurate, and external radiator is of less demanding；High pressure,
In AC220V input environments, resistance to pressure energy reaches 280V or so, apparent to resisting surge performance.
Description of the drawings
Fig. 1 is the structural schematic diagram of the LED light source of the COB encapsulation of the embodiment of the present invention.
Fig. 2 is the circuit diagram for the LED light source that COB shown in Fig. 1 is encapsulated.
Specific implementation mode
As shown in Figure 1, the LED light source of the COB encapsulation of the embodiment of the present invention includes being set in integrated COB pieces (not shown)
And sequentially connected ac input end 10, AC to DC bridge circuit group 20, damping current-limiting circuit group 30, the luminous electricity of LED lamp bead
Road group 40 and buffering landing circuit group 50, the AC to DC bridge circuit group 30 further lands circuit group phase with the buffering
Connection 50.
The ac input end 10 is used for incoming transport power supply, and the AC to DC bridge circuit group 20 will be for that will pass through institute
The alternating current for stating ac input end input is converted to direct current, and the damping current-limiting circuit group is used for according to the AC to DC
The DC voltage that bridge circuit group 20 provides is that the LED lamp bead illuminating circuit group 40 provides stable driving current, the buffering
Driving current of the landing circuit group 50 for carrying the LED lamp bead illuminating circuit group 40, and to the LED lamp bead illuminating circuit
The power factor of group 40 is corrected, and the buffering landing circuit group 50 is additionally operable to the temperature according to the integrated COB LED pieces
The driving voltage of the LED lamp bead illuminating circuit group 40 is adjusted.Total electricity that the LED lamp bead illuminating circuit group 40 carries
Pressure is less than 1.4 times of the voltage of the ac input end 10.
As shown in Fig. 2, the AC to DC bridge circuit group 20 is by protection circuit, rectification circuit and high-frequency filter circuit group
At.The rectification circuit is the rectifier bridge being made of four diode D1-D4, the high-frequency filter circuit by inductance L1, L2 and
Capacitance C1 compositions, described protection electricity routing resistance R1, R2 and diode D5 compositions, one end of inductance L1 and one end of inductance L2 point
It is not connected with the zero terminal of the ac power input end and fire line terminal, the other end of inductance L1 and inductance L2's is another
End is connected with the both ends of the capacitance C1 respectively, and the rectifier bridge includes AC input 1, AC input 3, ground connection
End 4 and output end 4, AC input 1, the AC input 3 of the rectifier bridge are connected with the both ends of capacitance C1 respectively,
The ground terminal 4 of the rectifier bridge is grounded, and the output end 2 of the rectifier bridge is connected with the anode and resistance R1 of diode D5 respectively
It connects, resistance R1 is grounded by resistance R2.
The damping current-limiting circuit group 30 includes constant current chip RLD1301, resistance R3 and resistance R4, the constant current chip
One end of the pin 1 of RLD1301, pin 2 and resistance R3 is connected with the cathode of diode D5 respectively, the other end point of resistance R3
Be not connected with one end of the pin 3 of the constant current chip RLD1301 and resistance R4, the other end of resistance R4 with respectively with it is described
The pin 4 of constant current chip RLD1301 is connected with pin 5, and is connected to the buffering landing circuit group 50 and the LED lamp bead
Illuminating circuit group 40.The constant current chip RLD1301 is tuned into fixed output current by resistance R3 and resistance R4, to lock
40 driving current of LED lamp bead illuminating circuit group.
The LED lamp bead illuminating circuit group 40 includes 3 groups of LED illuminating circuits being sequentially connected in series, each group of LED illuminating circuit
Including multiple LED lamp beads being connected in series with, the one or more light-emitting surfaces of 3 groups of LED illuminating circuits composition.The light-emitting surface is wanted
There are enough heat-delivery surfaces, after ensureing that lamp bead is lighted, lamp bead will not cause light decay to burn because moment overheats, and be temperature detection
Duration reserves cushion space.
Buffering landing circuit group 50 includes voltage control chip I L2308, resistance R6, resistance R7, resistance R8, described
The pin 1, pin 2, pin 4 that voltage controls chip I L2308 are sent out with three groups of LED of the LED lamp bead illuminating circuit group 40 respectively
The last one LED lamp bead of optical circuit is connected, to carry the electric current of the LED lamp bead illuminating circuit group 40.The voltage
The connection of two LED lamp beads of least significant end is series in the pin 3 of control chip I L2308 and the LED lamp bead illuminating circuit group
Point is connected, and the pin 3 of the voltage control chip I L2308 also passes through the pin of resistance R5 and the constant current chip RLD1301
4 are connected with pin 5, to form concussion loop with the constant current chip RLD1301, with to the LED lamp bead illuminating circuit
The driving voltage of group 40 is adjusted.The pin 5 of the voltage control chip I L2308 is grounded, and the voltage controls chip
The pin 6 and pin 7 of IL2308 is respectively by resistance R7 and resistance R8 ground connection, and resistance R7 and resistance R8 are for adjusting LED lamp bead
The power factor of illuminating circuit group 40.The pin 8 of the voltage control chip I L2308 is controlled by resistance R6 and the voltage
The pin 4 of chip I L2308 is connected, and is detected to the last position electric current of the LED lamp bead illuminating circuit group 40 with realizing.
Compared with prior art, input effect of the integrated COB pieces of the LED light source of COB of the invention encapsulation is high, generates heat
Measure low, unit area can carry the power of bigger, be suitable for floodlight, the beam light source of the small light-emitting surface of big wattage；Using exclusive
Temperature control system, be autonomous Design phaselocked loop in enclosed.Temperature is accurate, and external radiator is of less demanding；High pressure,
In AC220V input environments, resistance to pressure energy reaches 280V or so, apparent to resisting surge performance.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of LED light source of COB encapsulation, which is characterized in that including being set to integrated COB on pieces ac input end, exchange becomes
Direct current bridge circuit group, damping current-limiting circuit group, LED lamp bead illuminating circuit group and buffering landing circuit group, the ac input end,
The AC to DC bridge circuit group, the damping current-limiting circuit group, the LED lamp bead illuminating circuit group and buffering landing
Circuit group is sequentially connected, and the AC to DC bridge circuit group is further connected with buffering landing circuit group.
2. the LED light source of COB according to claim 1 encapsulation, which is characterized in that the AC to DC bridge circuit group by
Protect circuit, rectification circuit and high-frequency filter circuit composition.
3. the LED light source of COB encapsulation according to claim 2, which is characterized in that the rectification circuit is by diode
The rectifier bridge of D1, D2, D3, D4 composition, the high-frequency filter circuit are made of inductance L1, L2 and capacitance C1, the protection circuit
Be made of resistance R1, R2 and diode D5, one end of inductance L1 and one end of inductance L2 respectively with the ac power input end
Zero terminal be connected with fire line terminal, the other end of inductance L1 and the other end of inductance L2 respectively with the capacitance C1 two
End is connected, and the rectifier bridge includes two AC inputs, ground terminal and output end, and two alternating currents of the rectifier bridge input
End is connected with the both ends of capacitance C1 respectively, the ground terminal of rectifier bridge ground connection, and the output end of the rectifier bridge is respectively with two
The anode of pole pipe D5 is connected with resistance R1, and resistance R1 is grounded by resistance R2.
4. the LED light source of COB encapsulation according to claim 3, which is characterized in that the LED lamp bead illuminating circuit group packet
Include 3 groups of LED illuminating circuits being sequentially connected in series, each group of LED illuminating circuit includes multiple LED lamp beads being connected in series with, described 3 groups
The one or more light-emitting surfaces of LED illuminating circuits composition.
5. the LED light source of COB encapsulation according to claim 4, which is characterized in that the damping current-limiting circuit group includes perseverance
Flow the pin 1 of chip RLD1301, resistance R3 and resistance R4, the constant current chip RLD1301, one end point of pin 2 and resistance R3
Be not connected with the cathode of diode D5, the other end of resistance R3 respectively with the pin 3 and resistance of the constant current chip RLD1301
One end of R4 is connected, the other end of resistance R4 be connected respectively with the pin 4 of the constant current chip RLD1301 and pin 5,
And it is connected to the buffering landing circuit group and the LED lamp bead illuminating circuit group.
6. the LED light source of COB encapsulation according to claim 5, which is characterized in that the buffering landing circuit group includes electricity
Voltage-controlled coremaking piece IL2308, resistance R6, resistance R7, resistance R8, the pin 1 of the voltage control chip I L2308, draw pin 2
Foot 4 is connected with the last one LED lamp bead of three groups of LED illuminating circuits of the LED lamp bead illuminating circuit group respectively, the electricity
The pin 3 of voltage-controlled coremaking piece IL2308 is connected by resistance R5 with the pin 4 of the constant current chip RLD1301 and pin 5, institute
State the pin 3 of voltage control chip I L2308 also with two LED light that least significant end is series in the LED lamp bead illuminating circuit group
The tie point of pearl is connected, and the pin 5 of the voltage control chip I L2308 is grounded, and the voltage control chip I L2308's draws
Respectively by resistance R7 and resistance R8 ground connection, the pin 8 of the voltage control chip I L2308 passes through resistance R6 for foot 6 and pin 7
It is connected with the pin 4 of voltage control chip I L2308.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137511.1A CN108575006A (en) | 2017-03-09 | 2017-03-09 | A kind of LED light source of COB encapsulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137511.1A CN108575006A (en) | 2017-03-09 | 2017-03-09 | A kind of LED light source of COB encapsulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108575006A true CN108575006A (en) | 2018-09-25 |
Family
ID=63577761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710137511.1A Pending CN108575006A (en) | 2017-03-09 | 2017-03-09 | A kind of LED light source of COB encapsulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108575006A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100045342A (en) * | 2008-10-23 | 2010-05-03 | 심현섭 | The ac power led illuminating apparatus having power stabilization function |
| CN102548092A (en) * | 2010-12-21 | 2012-07-04 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) drive circuit and LED lamp |
| CN103517523A (en) * | 2013-09-25 | 2014-01-15 | 天津金玛光电有限公司 | High-voltage constant-current drive circuit and LED light source with same |
| CN104080238A (en) * | 2013-07-30 | 2014-10-01 | 广州市九佛电器有限公司 | Current-limiting LED light source module |
| CN105025627A (en) * | 2015-07-27 | 2015-11-04 | 苏州智浦芯联电子科技有限公司 | LED (Light-Emitting Diode) driving circuit packaging structure packaged with rectifier bridge device and illuminating system |
| CN106304480A (en) * | 2016-08-19 | 2017-01-04 | 盐城工学院 | A kind of LED drive circuit and LED lamp |
| CN206674242U (en) * | 2017-03-09 | 2017-11-24 | 郭尔峰 | A kind of LED light source of COB encapsulation |
-
2017
- 2017-03-09 CN CN201710137511.1A patent/CN108575006A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100045342A (en) * | 2008-10-23 | 2010-05-03 | 심현섭 | The ac power led illuminating apparatus having power stabilization function |
| CN102548092A (en) * | 2010-12-21 | 2012-07-04 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) drive circuit and LED lamp |
| CN104080238A (en) * | 2013-07-30 | 2014-10-01 | 广州市九佛电器有限公司 | Current-limiting LED light source module |
| CN103517523A (en) * | 2013-09-25 | 2014-01-15 | 天津金玛光电有限公司 | High-voltage constant-current drive circuit and LED light source with same |
| CN105025627A (en) * | 2015-07-27 | 2015-11-04 | 苏州智浦芯联电子科技有限公司 | LED (Light-Emitting Diode) driving circuit packaging structure packaged with rectifier bridge device and illuminating system |
| CN106304480A (en) * | 2016-08-19 | 2017-01-04 | 盐城工学院 | A kind of LED drive circuit and LED lamp |
| CN206674242U (en) * | 2017-03-09 | 2017-11-24 | 郭尔峰 | A kind of LED light source of COB encapsulation |
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