CN206674242U - A kind of LED light source of COB encapsulation - Google Patents
A kind of LED light source of COB encapsulation Download PDFInfo
- Publication number
- CN206674242U CN206674242U CN201720227616.1U CN201720227616U CN206674242U CN 206674242 U CN206674242 U CN 206674242U CN 201720227616 U CN201720227616 U CN 201720227616U CN 206674242 U CN206674242 U CN 206674242U
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- Prior art keywords
- circuit group
- resistance
- pin
- led lamp
- lamp bead
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- 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]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides a kind of LED light source of COB encapsulation, including being arranged at ac input end on integrated COB pieces, AC-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-DC bridge circuit group, the damping current-limiting circuit group, the LED lamp bead illuminating circuit group and the buffering landing circuit group are sequentially connected, and the AC-DC bridge circuit group is further connected with the buffering landing circuit group.The LED light source of COB encapsulation of the present utility model has the advantages of small power consumption and low caloric value.
Description
Technical field
The utility model belongs to LED field, more particularly to a kind of LED light source of COB encapsulation.
Background technology
LED encapsulation is an important step of LED lamp bead production, and at present, high-power LED lamp bead is typically using SMD
(SMD) encapsulate, 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, complex process, cost are high, thermal resistance is big etc. be present
Shortcoming, therefore, tending to encapsulate (COB) technology on development plate in the industry.
At present, the LED light source of COB encapsulation is always all with Switching Power Supply or capacitance-resistance power drives, and its power supply is complicated, power consumption
Greatly, occupancy volume is big, needs large area aluminium to radiate, and easily causes LED circuit to burn.
Utility model content
The utility model purpose is for technical problem existing for the LED light source of existing COB encapsulation, there is provided Yi Zhonggong
Consume the LED light source of small and low caloric value COB encapsulation.
To solve the above problems, the utility model adopts the following technical scheme that：
A kind of LED light source of COB encapsulation, it includes being arranged at ac input end on integrated COB pieces, AC-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-DC bridge circuit group are further connected with the buffering landing circuit group.
In the utility model embodiment, the AC-DC bridge circuit group is filtered by protection circuit, rectification circuit and high frequency
Wave circuit forms.
In the utility model embodiment, the rectification circuit is the rectifier bridge being made up of diode D1, D2, D3, D4, described
High-frequency filter circuit is made up of inductance L1, L2 and electric capacity C1, and the protection circuit is made up of resistance R1, R2 and diode D5, electricity
Feel L1 one end and inductance L2 one end respectively with the zero terminal and fire line terminal of the ac power input end to be connected, electricity
The both ends of the sense L1 other end and the inductance L2 other end respectively with the electric capacity C1 are connected, and the rectifier bridge includes two exchanges
Electrical input, earth terminal and output end, the both ends of two AC inputs of the rectifier bridge respectively with electric capacity C1 are connected, institute
The earth terminal ground connection of rectifier bridge is stated, the output end of the rectifier bridge is connected with diode D5 positive pole and resistance R1 respectively, electricity
Resistance R1 is grounded by resistance R2.
In the utility model embodiment, the LED lamp bead illuminating circuit group includes 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, the one or more hairs of 3 groups of LED illuminating circuits composition
Smooth surface.
In the utility model embodiment, the damping current-limiting circuit group includes constant current chip RLD1301, resistance R3 and resistance
Negative pole of the one end of R4, constant current chip RLD1301 pin 1, pin 2 and resistance R3 respectively with diode D5 is connected,
The resistance R3 other end is connected with the pin 3 of the constant current chip RLD1301 and resistance R4 one end respectively, and resistance R4's is another
One end is connected with the pin 4 and pin 5 respectively with the constant current chip RLD1301, and is connected to the buffering landing circuit
Group and the LED lamp bead illuminating circuit group.
In the utility model embodiment, the buffering landing circuit group includes voltage control chip IL2308, resistance R6, electricity
It is luminous electric with the LED lamp bead respectively to hinder R7, resistance R8, the voltage control chip IL2308 pin 1, pin 2, pin 4
Last LED lamp bead of three groups of LED illuminating circuits of road group is connected, and the pin 3 of the voltage control chip IL2308 is logical
The pin 4 and pin 5 for crossing resistance R5 and the constant current chip RLD1301 are connected, and the voltage control chip IL2308's draws
The tie point of two LED lamp beads of the pin 3 also with being series at least significant end in the LED lamp bead illuminating circuit group is connected, the electricity
Pressure control chip IL2308 pin 5 is grounded, and the pin 6 and pin 7 of the voltage control chip IL2308 pass through resistance respectively
R7 and resistance R8 ground connection, the pin 8 of the voltage control chip IL2308 pass through resistance R6 and the voltage control chip
IL2308 pin 4 is connected.
Compared with prior art, input effect of the integrated COB pieces of the LED light source of COB of the present utility model encapsulation it is high,
Caloric value is low, and unit area can carry bigger power, floodlight, beam light source suitable for the small light-emitting area of big wattage；Using
Exclusive temperature control system, it is enclosed in the phaselocked loop of autonomous Design.Temperature is accurate, and external radiator is less demanding；High pressure,
In AC220V input environments, resistance to pressure energy reaches 280V or so, obvious to resisting surge performance.
Brief description of the drawings
Fig. 1 is the structural representation of the LED light source of the COB encapsulation of the utility model embodiment.
Fig. 2 is the circuit diagram of the LED light source of the COB encapsulation shown in Fig. 1.
Embodiment
As shown in figure 1, the LED light source of the COB encapsulation of the utility model embodiment is including being arranged at integrated COB pieces, (figure is not
Show) on and the ac input end 10, AC-DC bridge circuit group 20, damping current-limiting circuit group 30, the LED lamp bead hair that are sequentially connected
Optical circuit group 40 and buffering landing circuit group 50, the AC-DC bridge circuit group 30 further lands circuit with the buffering
Group is connected 50.
The ac input end 10 is used for incoming transport power supply, and the AC-DC bridge circuit group 20 is used to that institute will to be passed through
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-DC
The DC voltage that bridge circuit group 20 provides provides stable driving current, the buffering for the LED lamp bead illuminating circuit group 40
Landing circuit group 50 is used for the driving current 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-DC bridge circuit group 20 is by protection circuit, rectification circuit and high-frequency filter circuit group
Into.The rectification circuit is the rectifier bridge that is made up of four diode D1-D4, the high-frequency filter circuit by inductance L1, L2 and
Electric capacity C1 is formed, and the protection circuit is made up of resistance R1, R2 and diode D5, inductance L1 one end and inductance L2 one end point
It is not connected with the zero terminal and fire line terminal of the ac power input end, the inductance L1 other end and inductance L2's is another
The both ends respectively with the electric capacity C1 are held to be connected, the rectifier bridge includes AC input 1, AC input 3, ground connection
End 4 and output end 4, the both ends of the AC input 1, AC input 3 of the rectifier bridge respectively with electric capacity C1 are connected,
The earth terminal 4 of the rectifier bridge is grounded, and the output end 2 of the rectifier bridge is connected with diode D5 positive pole and resistance R1 respectively
Connect, 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
Negative pole of the one end of RLD1301 pin 1, pin 2 and resistance R3 respectively with diode D5 is connected, the resistance R3 other end point
Be not connected with the pin 3 of the constant current chip RLD1301 and resistance R4 one end, the resistance R4 other end with respectively with it is described
Constant current chip RLD1301 pin 4 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, so as to lock
The driving current of LED lamp bead illuminating circuit group 40.
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, 3 groups of LED illuminating circuits form one or more light-emitting areas.The light-emitting area will
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
Continuation reserves cushion space.
The buffering landing circuit group 50 includes voltage control chip IL2308, resistance R6, resistance R7, resistance R8, described
Three group LEDs of the voltage control chip IL2308 pin 1, pin 2, pin 4 respectively with the LED lamp bead illuminating circuit group 40 are sent out
Last LED lamp bead of optical circuit is connected, so as to carry the electric current of the LED lamp bead illuminating circuit group 40.The voltage
The connection of two LED lamp bead of the control chip IL2308 pin 3 with being series at least significant end in the LED lamp bead illuminating circuit group
Point is connected, and the pin 3 of the voltage control chip IL2308 also passes through resistance R5 and constant current chip RLD1301 pin
4 are connected with pin 5, so as 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 IL2308 is grounded, the voltage control chip
IL2308 pin 6 and pin 7 is grounded by resistance R7 and resistance R8 respectively, and resistance R7 and resistance R8 are used to adjust LED lamp bead
The power factor of illuminating circuit group 40.The pin 8 of the voltage control chip IL2308 is controlled by resistance R6 and the voltage
Chip I L2308 pin 4 is connected, and the last position electric current of the LED lamp bead illuminating circuit group 40 is detected with realizing.
Compared with prior art, input effect of the integrated COB pieces of the LED light source of COB of the present utility model encapsulation it is high,
Caloric value is low, and unit area can carry bigger power, floodlight, beam light source suitable for the small light-emitting area of big wattage；Using
Exclusive temperature control system, it is enclosed in the phaselocked loop of autonomous Design.Temperature is accurate, and external radiator is less demanding；High pressure,
In AC220V input environments, resistance to pressure energy reaches 280V or so, obvious to resisting surge performance.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (6)
1. a kind of LED light source of COB encapsulation, it is characterised in that including being arranged at ac input end on integrated COB pieces, 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-DC bridge circuit group, the damping current-limiting circuit group, the LED lamp bead illuminating circuit group and the buffering landing
Circuit group is sequentially connected, and the AC-DC bridge circuit group is further connected with the buffering landing circuit group.
2. the LED light source of COB according to claim 1 encapsulation, it is characterised in that the AC-DC bridge circuit group by
Protection circuit, rectification circuit and high-frequency filter circuit composition.
3. the LED light source of COB encapsulation according to claim 2, it is characterised in that the rectification circuit is by diode
The rectifier bridge of D1, D2, D3, D4 composition, the high-frequency filter circuit are made up of inductance L1, L2 and electric capacity C1, the protection circuit
Be made up of resistance R1, R2 and diode D5, inductance L1 one end and inductance L2 one end respectively with the ac power input end
Zero terminal be connected with fire line terminal, the inductance L1 other end and the inductance L2 other end respectively with the electric capacity C1 two
End is connected, and the rectifier bridge includes two AC inputs, earth terminal and output end, the two alternating currents input of the rectifier bridge
Both ends respectively with electric capacity C1 are held to be connected, the earth terminal ground connection of the rectifier bridge, the output end of the rectifier bridge is respectively with two
Pole pipe D5 positive pole 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, it is characterised in that the LED lamp bead illuminating circuit group bag
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, described 3 groups
LED illuminating circuits form one or more light-emitting areas.
5. the LED light source of COB encapsulation according to claim 4, it is characterised in that the damping current-limiting circuit group includes perseverance
One end point of stream chip RLD1301, resistance R3 and resistance R4, the constant current chip RLD1301 pin 1, pin 2 and resistance R3
Negative pole not with diode D5 is connected, the resistance R3 other end pin 3 and resistance with the constant current chip RLD1301 respectively
R4 one end is connected, and the resistance R4 other end is connected with the pin 4 and pin 5 respectively with the constant current chip RLD1301,
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, it is characterised in that the buffering landing circuit group includes electricity
Pressure control chip IL2308, resistance R6, resistance R7, resistance R8, the voltage control chip IL2308 pin 1, pin 2, draw
Last LED lamp bead of pin 4 respectively with three groups of LED illuminating circuits of the LED lamp bead illuminating circuit group is connected, the electricity
Pressure control chip IL2308 pin 3 is connected by resistance R5 with the pin 4 and pin 5 of the constant current chip RLD1301, institute
State two LEDs of the voltage control chip IL2308 pin 3 also with being series at least significant end in the LED lamp bead illuminating circuit group
The tie point of pearl is connected, and the pin 5 of the voltage control chip IL2308 is grounded, and the voltage control chip IL2308's draws
Pin 6 and pin 7 are grounded by resistance R7 and resistance R8 respectively, and the pin 8 of the voltage control chip IL2308 passes through resistance R6
It is connected with the pin 4 of the voltage control chip IL2308.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720227616.1U CN206674242U (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 |
|---|---|---|---|
| CN201720227616.1U CN206674242U (en) | 2017-03-09 | 2017-03-09 | A kind of LED light source of COB encapsulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206674242U true CN206674242U (en) | 2017-11-24 |
Family
ID=60377211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720227616.1U Expired - Fee Related CN206674242U (en) | 2017-03-09 | 2017-03-09 | A kind of LED light source of COB encapsulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206674242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108575006A (en) * | 2017-03-09 | 2018-09-25 | 郭尔峰 | A COB packaged LED light source |
-
2017
- 2017-03-09 CN CN201720227616.1U patent/CN206674242U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108575006A (en) * | 2017-03-09 | 2018-09-25 | 郭尔峰 | A COB packaged LED light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20200309 |
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| CF01 | Termination of patent right due to non-payment of annual fee |