CN207099384U - A kind of LED light source for being internally integrated current constant control - Google Patents
A kind of LED light source for being internally integrated current constant control Download PDFInfo
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- CN207099384U CN207099384U CN201720943526.2U CN201720943526U CN207099384U CN 207099384 U CN207099384 U CN 207099384U CN 201720943526 U CN201720943526 U CN 201720943526U CN 207099384 U CN207099384 U CN 207099384U
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Abstract
The utility model discloses a kind of LED light source for being internally integrated current constant control, includes LED light source component, and LED light source component is connected with the constant voltage source module of source outer；LED light source component includes LED array light source and constant current IC, and it is set directly on installation LED pcb board；The dc source output of constant current IC Vin pin connection constant voltage source module, and its+Vout pin connects a current-limiting resistance, the current-limiting resistance converges with constant current IC ADJ pin to be connected together and is connected with first LED of LED array light source positive terminal.The utility model is by setting integrated constant current IC on the pcb board inside LED light source component, current constant control to LED array light source is realized by this constant current IC, so change the way that tradition sets constant-current controller outside LED light source, not only save constant-current controller, simplify circuit structure, and the required precision to LED voltage stepping can be reduced, while improve current stability and precision.
Description
Technical field
It the utility model is related to light supply apparatus technical field, and in particular to a kind of LED light source device using current constant control.
Background technology
LED light source is with its fast response time, stable performance, combination is flexible, color category is more, low in energy consumption, long lifespan
The advantages that and obtain extensively, conventional LED controls have his current constant control of Isobarically Control by operation principle point.Constant pressure type control has
The features such as circuit is simple, cost is low, constant pressure type are mainly next so as to change the electrical power that light source obtains by output voltage is changed
Change the brightness of light source.The major defect of Isobarically Control is, the inside LED forward drop when the junction temperature of LED light source rises
Change, with only and come be LED light ource electric current also and then change, final result is to cause LED light source brightness with temperature
Drift about and change, while the required precision to LED voltage stepping is high.
The characteristics of constant current mode control is maximum is exactly to stabilize the electric current for flowing through LED light source, so as to ensure the bright of LED light source
Stability is spent, the electric current that light source is flowed through by changing can reach the purpose of regulation brightness, and light-source brightness tuning linearity is good.It is but permanent
Flow control control circuit is more complicated, and cost is higher.At present, the special constant-current controller of the setting for current constant control, in order to keep away
Exempting from heat influences the normal work of constant-current controller, by needing constant-current controller being arranged on the outside of LED array light source, from
Realize the current constant control to LED array light source in outside.The shortcomings that this mode, is that independent constant-current controller needs more multiple
Miscellaneous circuit structure；Simultaneously as constant-current controller implements current constant control in the outside of LED array light source, for control electric current
Stability and precision aspect be short of.
Utility model content
The defects of the technical problems to be solved in the utility model is prior art, there is provided a kind of structure design is more reasonable, electricity
Flow control stability and the LED light source that precision is higher, circuit structure is more simply internally integrated current constant control.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：A kind of current constant control of being internally integrated
LED light source, includes LED light source component, and LED light source component is connected with the constant voltage source module of source outer, constant voltage source mould
Block connects civil power, it is characterised in that：The LED light source component includes LED array light source and integrated constant flow module, LED array
The integrated constant flow module of light source connection, integrate constant flow module connection constant voltage source module；The integrated constant flow module is a constant current IC,
Its model LM1085IT-ADJ, constant current IC are set directly on installation LED pcb board；Constant current IC Vin pin connection is permanent
The dc source output of piezoelectricity source module, and its+Vout pin connects a current-limiting resistance, the ADJ of the current-limiting resistance and constant current IC
Pin, which converges, to be connected together and is connected with first LED of LED array light source positive terminal, the LED array light source last
Individual LED negative pole termination.
Further, the current-limiting resistance is 500R adjustable resistance WR1, and it is connected to constant current IC+Vout pin and LED
The governor motion to LED light source operating current is formed between array light source.
Preferably, the direct current power source voltage VCC of the Vin ends connection constant voltage source module output of the constant current IC be 48V,
36V, 24V or 12V.
Further, the LED array light source includes at least two LED.
Civil power exports (AC- by the constant voltage source module converter outside LED light source by high pressure AC110/220 for low pressure
DC), i.e. DC48 36 24 12V, supply LED light source component, LED light source component by internal constant current IC predetermined currents work, LED
The operating current of array light source is set by adjustable resistance WR1 resistance.
The utility model passes through this constant current IC by setting integrated constant current IC on the pcb board inside LED light source component
The current constant control to LED array light source is realized, so changes the way that tradition sets constant-current controller outside LED light source,
Constant-current controller is not only saved, simplifies circuit structure, and the required precision to LED voltage stepping can be reduced, is carried simultaneously
High current stability and precision.
Brief description of the drawings
Fig. 1 is the utility model wiring construction schematic diagram；
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
In the present embodiment, referring to Figures 1 and 2, the LED light source for being internally integrated current constant control, include LED light source group
Part, LED light source component are connected with the constant voltage source module of source outer, constant voltage source module connection civil power；LED light source component bag
LED array light source and integrated constant flow module have been included, the integrated constant flow module of LED array light source connection, it is permanent to have integrated constant flow module connection
Piezoelectricity source module；The integrated constant flow module is a constant current IC, and its model LM1085IT-ADJ, constant current IC are set directly at
On the pcb board for installing LED；The dc source output of constant current IC Vin pin connection constant voltage source module, and its+Vout pin connects
Connect a current-limiting resistance, the current-limiting resistance and the constant current IC ADJ pin converge be connected together and with first of LED array light source
LED positive terminal connection, last LED of LED array light source negative pole termination.
The current-limiting resistance is 500R adjustable resistance WR1, and it is connected to constant current IC+Vout pin and LED array light source
Between formed to the governor motion of LED light source operating current.
The direct current power source voltage VCC of the Vin ends connection constant voltage source module output of the constant current IC for 12V (36V, 24V or
48V).
The LED array light source includes at least two LED.
Civil power exports (AC- by the constant voltage source module converter outside LED light source by high pressure AC110/220 for low pressure
DC), i.e. DC12V (or DC 36 24 48V), supply LED light source component, LED light source component presses internal constant current IC predetermined current works
Make, the operating current of LED array light source is set by adjustable resistance WR1 resistance.
The utility model is described in detail above, it is described above, only the preferred embodiment of the utility model and
, it is when the utility model practical range can not be limited, i.e., all to make equivalent changes and modifications according to the application scope, it all should still belong to this
In utility model covering scope.
Claims (4)
1. a kind of LED light source for being internally integrated current constant control, includes LED light source component, LED light source component is connected with outside light source
The constant voltage source module in portion, constant voltage source module connection civil power, it is characterised in that：The LED light source component includes LED array
Light source and integrated constant flow module, the integrated constant flow module of LED array light source connection, integrate constant flow module connection constant voltage source module；
The integrated constant flow module is a constant current IC, and its model LM1085IT-ADJ, constant current IC are set directly at installation LED's
On pcb board；The dc source output of constant current IC Vin pin connection constant voltage source module, and its+Vout pin connects current limliting electricity
Resistance, the current-limiting resistance and the constant current IC ADJ pin converge be connected together and with first LED of LED array light source positive pole
End connection, last LED of LED array light source negative pole termination.
2. the LED light source according to claim 1 for being internally integrated current constant control, it is characterised in that：The current-limiting resistance is
500R adjustable resistance WR1, it, which is connected between constant current IC+Vout pin and LED array light source, forms the electricity that works LED light source
The governor motion of stream.
3. the LED light source according to claim 1 for being internally integrated current constant control, it is characterised in that：The Vin of the constant current IC
The direct current power source voltage VCC of end connection constant voltage source module output is 48V, 36V, 24V or 12V.
4. the LED light source according to claim 3 for being internally integrated current constant control, it is characterised in that：The LED array light source
Include at least two LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720943526.2U CN207099384U (en) | 2017-07-31 | 2017-07-31 | A kind of LED light source for being internally integrated current constant control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720943526.2U CN207099384U (en) | 2017-07-31 | 2017-07-31 | A kind of LED light source for being internally integrated current constant control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207099384U true CN207099384U (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720943526.2U Active CN207099384U (en) | 2017-07-31 | 2017-07-31 | A kind of LED light source for being internally integrated current constant control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379801A (en) * | 2018-09-25 | 2019-02-22 | 东莞锐视光电科技有限公司 | A kind of LED drive circuit and method |
-
2017
- 2017-07-31 CN CN201720943526.2U patent/CN207099384U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379801A (en) * | 2018-09-25 | 2019-02-22 | 东莞锐视光电科技有限公司 | A kind of LED drive circuit and method |
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Address after: No. 333, Zhushan Zhenxing Road, Dongcheng District, Dongguan City, Guangdong Province Patentee after: Guangdong Keshi Optical Technology Co.,Ltd. Address before: No. 333, Zhushan Zhenxing Road, Dongcheng District, Dongguan City, Guangdong Province Patentee before: CST AUTOMATION TECHNOLOGY Co.,Ltd. |