CN203661364U - Photoelectric integrated led integrated light source - Google Patents
Photoelectric integrated led integrated light source Download PDFInfo
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- CN203661364U CN203661364U CN201320839151.7U CN201320839151U CN203661364U CN 203661364 U CN203661364 U CN 203661364U CN 201320839151 U CN201320839151 U CN 201320839151U CN 203661364 U CN203661364 U CN 203661364U
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Abstract
The utility model discloses a photoelectric integrated LED integrated light source. The photoelectric integrated LED integrated light source comprises an LED light source, a printed circuit board and a switch driving circuit, the LED light source and the switch driving circuit are integrated on the printed circuit board, the switch driving circuit comprises an input interface connected with an electric supply, an AC-DC converting unit for converting the electric supply to direct current, a voltage stabilizing unit and a power supply output interface, the input interface is connected with the AC-DC converting unit, the AC-DC converting unit is connected with the voltage stabilizing unit, the voltage stabilizing unit is connected with the power supply output interface, and the power supply output interface is connected with the LED light source. According to the photoelectric integrated LED integrated light source, the structure of the switch driving circuit is simple, the LED light source and the switch driving circuit can be integrated on the printed circuit board, and the photoelectric integration is realized.
Description
Technical field
The utility model relates to LED integrated optical source, relates in particular to a kind of optoelectronic integration LED integrated optical source.
Background technology
Traditional great power LED module packaging all uses the working method of multiple row parallel connection, and the electric current of driving is very large.General LED light source all uses switch constant-current circuit to drive, and the operation principle of Switching Power Supply determines, must adopt the components and parts such as afterflow inductance, electric capacity of large volume under large electric current; Switching circuit is easy to be subject to the noise jamming on external circuit, also can disturb the electrical appliance on its parallel line simultaneously, therefore must increase again suitable anti-tampering components and parts.Many-sided factor has determined that the volume of high power switching power supply can be very large.And more than existing conventional 20W on the market integration module, light-emitting area is little, and electric current is large, is limited to the large volume of power supply, and the switch driving circuit of light source and driving will be made respectively different separate units.High-power LED light source uses traditional encapsulation and traditional switch driving circuit cannot carry out the integrated of one.For this reason, be necessary above-mentioned LED circuit and light source to be further improved.
Utility model content
The utility model provides a kind of optoelectronic integration LED integrated optical source, mainly solve technology be in prior art complex structure, the life-span due to switch drive power supply limited, volume is large, causes LED light source and switch drive power supply cannot be integrated in the problem on pcb board.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of optoelectronic integration LED integrated optical source is provided, comprises LED light source, pcb board and control drive circuit, described LED light source is integrated on pcb board with control drive circuit; Described control drive circuit comprises and is electrically connected input interface with city, converts civil power to galvanic AC-DC converting unit, voltage regulation unit and power output interface, described input interface is connected with AC-DC converting unit, described AC-DC converting unit is connected with voltage regulation unit, described voltage regulation unit is connected with power output interface, and described power output interface is connected with LED light source.
In preferred scheme, described voltage regulation unit comprises multiple current feedback circuits, described current feedback circuit comprises the first resistance, the second resistance and control module, described the first resistance and the second resistance also connect, and a termination AC-DC converting unit of the first resistance and the second resistance after connecing, its another termination control module.
In preferred scheme, described voltage regulation unit also comprises temperature feedback circuit, and described temperature feedback circuit comprises the second diode and control module, and the anode of described the second diode is connected with control module, and its negative terminal is connected with AC-DC converting unit.
In preferred scheme, described LED light source comprises a LED unit or multiple LED unit, and multiple LED unit is connected in series or and connects.
Useful technique effect of the present utility model is: the complex structure that is different from switch drive power supply of the prior art, volume is large, cause LED light source and switch drive power supply cannot be integrated in the problem on pcb board, the utility model provides a kind of optoelectronic integration LED integrated optical source, we have adopted linear constant-current control drive circuit to comprise drive circuit, circuit working is in persistent state, no longer need the afterflow inductance of large volume, electric capacity etc., can there is not electromagnetic compatibility and electromagnetic interference problem yet, can save a lot of additional devices, the volume of linear constant-current driving power supply can do very littlely and can make SMD technique, LED light source and drive circuit can be integrated on same a slice pcb board, accomplish optoelectronic integration.
Accompanying drawing explanation
Fig. 1 is the block diagram of the utility model optoelectronic integration LED integrated optical source;
Fig. 2 is the circuit structure diagram of the utility model optoelectronic integration LED integrated optical source;
Fig. 3 is the structure chart of the utility model optoelectronic integration LED integrated optical source.
Label declaration:
1-PCB plate, 2-LED light source, 3-controls drive circuit.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, being realized object and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
Refer to Fig. 1 and Fig. 3, present embodiment provides a kind of optoelectronic integration LED integrated optical source, and one comprises LED light source 2, pcb board 1 and controls drive circuit 3, and described LED light source 2 is integrated on pcb board 1 with control drive circuit 3; Described control drive circuit 3 comprises and is electrically connected input interface with city, converts civil power to galvanic AC-DC converting unit, voltage regulation unit and power output interface, described input interface is connected with AC-DC converting unit, described AC-DC converting unit is connected with voltage regulation unit, described voltage regulation unit is connected with power output interface, and described power output interface is connected with LED light source 2.
Consult Fig. 2, in preferred scheme, described voltage regulation unit specifically comprises multiple current feedback circuits, described current feedback circuit comprises the first feedback unit, the second feedback unit, the 3rd feedback unit, the 4th feedback unit, the 5th feedback unit and the 6th feedback unit, described the first feedback unit comprises the first resistance R 1, the second resistance R 2 and the first control chip U1, described the first resistance R 1 and the second resistance R 2 also connect, and a termination AC-DC converting unit of the first resistance R 1 and the second resistance R 2 after connecing, its another termination the first control chip U1; Described the second feedback unit comprises the 3rd resistance R 3, the 4th resistance R 4 and the second control chip U2, described the 3rd resistance R 3 and the 4th resistance R 4 also connect, and a termination AC-DC converting unit of the 3rd resistance R 3 and the 4th resistance R 4 after connecing, its another termination the second control chip U2; Described the 3rd feedback unit comprises the 5th resistance R 5, the 6th resistance R 6 and the 3rd control chip U6, described the 5th resistance R 5 and the 6th resistance R 6 also connect, and a termination AC-DC converting unit of the 5th resistance R 5 and the 6th resistance R 6 after connecing, its another termination the 3rd control chip U3; Described the 4th feedback unit comprises the 7th resistance R 7, the 8th resistance R 8 and the 4th control chip U4, described the 7th resistance R 7 and the 8th resistance R 8 also connect, and a termination AC-DC converting unit of the 7th resistance R 7 and the 8th resistance R 8 after connecing, its another termination the 4th control chip U4; Described the 5th feedback unit comprises the 9th resistance R 9, the tenth resistance R 10 and the 5th control chip U5, described the 9th resistance R 9 and the tenth resistance R 10 also connect, and a termination AC-DC converting unit of the 9th resistance R 9 and the tenth resistance R 10 after connecing, its another termination the 5th control chip U5; Described the 6th feedback unit comprises the 11 resistance R the 11, the 12 resistance R 12 and the 6th control chip U6, described the 11 resistance R the 11 and the 12 resistance R 12 also connects, and a termination AC-DC converting unit of the 11 resistance R the 11 and the 12 resistance R 12 after connecing, its another termination the 6th control chip U6.
In preferred scheme, described voltage regulation unit also comprises temperature feedback circuit, and described temperature feedback circuit comprises the second diode D2 and control module, and the anode of described the second diode D2 is connected with control module, and its negative terminal is connected with AC-DC converting unit.In concrete temperature acquisition, control module gathers the temperature of the second diode D2 upper substrate, and by the module of control chip inside, temperature is processed.Traditional switch constant-current driving power supply, what connect LED light source only has a loop, the namely positive pole of power supply and negative pole.Cause LED light source junction temperature to occur continuing to rise during when the factor of the external world or radiator structure itself, switch constant-current driving power supply can not get the feedback of temperature aspect, and the fixed current of design is still provided to LED light source.If the external heat conduction long time of LED does not reach balance, under the mode of operation of continuous constant continuous current, there is a strong possibility can damage.Our linear constant current driver circuit is owing to being integrated on same pcb board 1 with LED light source, and be provided with temperature feedback loop, therefore when LED heat radiation appearance is abnormal, can suitably adjust electric current input, to guarantee the safety and stability of light-source system, this has extremely important effect for outdoor lightings such as tunnels.
In preferred scheme, described LED light source comprises a LED unit or multiple LED unit, and multiple LED unit is connected in series or and connects.According to the LED unit of the requirement design varying number of different illumination intensity, multiple LED can select unit be connected in series and connect or go here and there the also annexation of combination.For the scheme of selecting multiple LED unit, designing a temperature feedback circuit is preferred embodiment.
The one assembly program of controlling drive circuit, light source module and pcb board in above-mentioned optoelectronic integration LED integrated optical source is provided below:
Step 1, in the installation of the enterprising line linearity constant current of the pcb board designing driver circuit device.In SMT workshop, adopt the technique of SMT all power supply apparatus all can be arranged on to the Power Management Design position on PCB.
Step 2, the pcb board of packaged power supply apparatus is sent into LED encapsulation workshop, adopt LED packaging technology that LED chip is packaged on the LED light source position designing on PCB.
Step 3, mount with the pcb board of LED light source encapsulation and carry out the test of corresponding optics and electric parameter completing power supply SMT.It after having tested, is exactly the LED of an optoelectronic integration integrated module that throws light on.
The utility model is different from the complex structure of switch drive power supply of the prior art, volume is large, cause LED light source and switch drive power supply cannot be integrated in the problem on pcb board, the utility model provides a kind of optoelectronic integration LED integrated optical source, we have adopted linear constant current switch drive circuit to comprise drive circuit, circuit working is in persistent state, no longer need the afterflow inductance of large volume, can there is not electromagnetic compatibility and electromagnetic interference problem yet, can save a lot of additional devices, it is very little and can make SMD technique that the volume of linear constant-current driving power supply can do, LED light source and drive circuit can be integrated on same a slice pcb board, accomplish optoelectronic integration.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (4)
1. an optoelectronic integration LED integrated optical source, comprises LED light source, pcb board and switch driving circuit, it is characterized in that, described LED light source and switch driving circuit are integrated on pcb board;
Described switch driving circuit comprises and is connected input interface with city, converts civil power to galvanic AC-DC converting unit, voltage regulation unit and power output interface, described input interface is connected with AC-DC converting unit, described AC-DC converting unit is connected with voltage regulation unit, described voltage regulation unit is connected with power output interface, and described power output interface is connected with LED light source.
2. optoelectronic integration LED integrated optical source according to claim 1, it is characterized in that, described voltage regulation unit comprises multiple current feedback circuits, described current feedback circuit comprises the first resistance, the second resistance and control module, described the first resistance and the second resistance also connect, and a termination AC-DC converting unit of the first resistance and the second resistance after connecing, its another termination control module.
3. optoelectronic integration LED integrated optical source according to claim 2, it is characterized in that, described voltage regulation unit also comprises temperature feedback circuit, described temperature feedback circuit comprises the second diode and control module, the anode of described the second diode is connected with control module, and its negative terminal is connected with AC-DC converting unit.
4. optoelectronic integration LED integrated optical source according to claim 3, is characterized in that, described LED light source comprises a LED unit or multiple LED unit, and multiple LED unit is connected in series or and connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320839151.7U CN203661364U (en) | 2013-12-18 | 2013-12-18 | Photoelectric integrated led integrated light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320839151.7U CN203661364U (en) | 2013-12-18 | 2013-12-18 | Photoelectric integrated led integrated light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203661364U true CN203661364U (en) | 2014-06-18 |
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ID=50927708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320839151.7U Expired - Fee Related CN203661364U (en) | 2013-12-18 | 2013-12-18 | Photoelectric integrated led integrated light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203661364U (en) |
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2013
- 2013-12-18 CN CN201320839151.7U patent/CN203661364U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20151218 |
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| EXPY | Termination of patent right or utility model |