CN105451407A - Method for adjusting brightness of LED according to voltage and LED lamp - Google Patents
Method for adjusting brightness of LED according to voltage and LED lamp Download PDFInfo
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- CN105451407A CN105451407A CN201410428912.9A CN201410428912A CN105451407A CN 105451407 A CN105451407 A CN 105451407A CN 201410428912 A CN201410428912 A CN 201410428912A CN 105451407 A CN105451407 A CN 105451407A
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- conduct electrons
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Abstract
The invention relates to the field of automobile lighting, and specifically relates to a method for adjusting the brightness of an LED according to the voltage. The method comprises the following steps: building an LED light source of a series structure; building more than one series circuit on the series structure, wherein the series circuits correspond to different voltage values; and arranging a switching-on electronic device on each series circuit, wherein each switching-on electronic device is used for switching on the series circuit thereof according to the input voltage, and the input voltage is the same as the rated voltage of the series circuit. The invention further relates to an LED lamp comprising an LED light source of a series structure and more than one series circuit. Each series circuit is composed of more than two series-connected wafers on the series structure. A switching-on electronic device is arranged on each series circuit, each switching-on electronic device is used for switching on the series circuit thereof according to the input voltage, and the input voltage is the same as the rated voltage of the series circuit. There is no need to carry out voltage regulating and filtering according to different input voltages, and the dependence of the LED light source on a driver is changed.
Description
Technical field
The present invention relates to automotive lighting field, in particular to according to the method for voltage-regulation LED luminance and LED.
Background technology
Compared with traditional headlamp light source, the advantage such as LED light source has that the life-span is long, power consumption is low, volume is little, response is fast, flexible design, control are flexible.And the fitting depth of LED is shallow, to leaving more free space in car.LED has been widely used in vehicle interior lighting device and car external signal device, and is applied to the headlamp of high-grade car on a small quantity, and it becomes inexorable trend for headlamp on a large scale.
Current LED automobile light source, comprises the products such as a day portable lighter, direction indicator lamp, taillight, reading lamp, all needs driver to carry out voltage stabilizing and filtering to LED light source, and electronic circuit needs to carry out each side tests such as EMC, and stability test.Not only cost is higher, and the reliability of electronic product is also the key of limit product development.How to reduce the restriction of electronic unit to LED light source, maximizedly utilize the long-life feature of LED, extend LED product bulk life time, improving product efficiency, reducing LED light source cost is the problem needing to solve.
Summary of the invention
The object of the present invention is to provide a kind of method according to voltage-regulation LED luminance and LED, to solve the problem that LED light source does not rely on driver control.
The embodiment of the present invention provides a kind of method according to voltage-regulation LED luminance, and its step comprises:
Set up the LED light source of cascaded structure;
Described cascaded structure sets up more than one series loop, the magnitude of voltage that each described series loop is corresponding different;
Each series loop arranges conduct electrons device, and described conduct electrons device is used for the series loop according to its place of input voltage conducting, and described input voltage is identical with the rated voltage of described series loop.
In certain embodiments, be preferably, the more than one series loop of described establishment comprises: the wafer being certainly in described cascaded structure one end draws public port; Series loop end is drawn from being in other more than one wafer of described cascaded structure; Described public port is connected with each described series loop end respectively and forms more than one series loop.
In certain embodiments, be preferably, the wafer that the series loop end of all described series loops is corresponding is all different.
In certain embodiments, be preferably, described conduct electrons device comprises: voltage relay.
In certain embodiments, be preferably, described in each series loop, conduct electrons device is set after, described method also comprises: be all connected with described LED voltage input end by all described conduct electrons devices.
The embodiment of the present invention additionally provides a kind of LED, it comprises: the LED light source of cascaded structure and more than one series loop, described series loop comprises the wafer of two or more series connection on described cascaded structure, each series loop arranges conduct electrons device, described conduct electrons device is used for the series loop according to its place of input voltage conducting, and described input voltage is identical with the rated voltage of described series loop.
In certain embodiments, be preferably, when the number of described series loop is two or more, rated voltage corresponding to all described series loops is all different.
In certain embodiments, be preferably, all described series loops have public port, and described public port draws the wafer from described cascaded structure one end.
In certain embodiments, be preferably, described conduct electrons device comprises: voltage relay.
In certain embodiments, be preferably, all described conduct electrons devices are all connected with the voltage input end of described LED.
The method according to voltage-regulation LED luminance that the embodiment of the present invention provides and LED, compared with prior art, LED light source is cascaded structure, cascaded structure builds more than one series loop, the magnitude of voltage that each series loop is corresponding different, each series loop carries out conducting control by conduct electrons device, when input voltage is identical with the rated voltage of series loop, the series loop at its place of conduct electrons break-over of device, LED light source is luminous, the series loop started due to input voltage difference is also different, without the need to carrying out voltage stabilizing and filtering process according to input voltage difference again, change the dependence of LED light source to driver.
Accompanying drawing explanation
Fig. 1 is the LED light source connection diagram in one embodiment of the invention with cascaded structure.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
Considering at present needs to use driver to carry out voltage stabilizing, filtering process to the electric current of LED light source, voltage because input voltage changes, make the problem that LED light source serviceability and life-span are limited to, embodiments provide a kind of method according to voltage-regulation LED luminance and LED.
This is according to the method for voltage-regulation LED luminance, and its step comprises: the LED light source setting up cascaded structure; Cascaded structure is set up more than one series loop, the magnitude of voltage that each series loop is corresponding different; Each series loop arranges conduct electrons device, and conduct electrons device is used for the series loop according to its place of input voltage conducting, and input voltage is identical with the rated voltage of series loop.
This LED comprises: it comprises: the LED light source of cascaded structure and more than one series loop, the wafer that series loop is connected by two or more on cascaded structure is formed, each series loop arranges conduct electrons device, conduct electrons device is used for the series loop according to its place of input voltage conducting, and input voltage is identical with the rated voltage of series loop.
LED light source is cascaded structure, cascaded structure builds more than one series loop, the magnitude of voltage that each series loop is corresponding different, each series loop carries out conducting control by conduct electrons device, when input voltage is identical with the rated voltage of series loop, the series loop at its place of conduct electrons break-over of device, LED light source is luminous, the series loop started due to input voltage difference is also different, without the need to carrying out voltage stabilizing and filtering process according to input voltage difference again, change the dependence of LED light source to driver.
Next, the present invention will describe in detail according to the method for voltage-regulation LED luminance:
Step 102, connects the wafer on LED light source, forms cascaded structure;
LED light source is made up of multiple wafer, the mutual annexation of wafer affect LED light source luminous time luminous point, the present invention, in order to depart from the dependence of LED light source to driver, adopts different voltage to use the principle of the wafer illumination of different number, makes electric current be in comparatively stable value always.In order to adapt to this principle, needing wafer to connect, intercepting the wafer of different number subsequently according to input voltage.
It should be noted that, first operator can consider application scenarios, voltage environment, then according to the number of wafers on voltage environment configurations cascaded structure when execution the method.Constantly extend the access quantity of LED light source and corresponding electronic device according to actual needs, to realize the LED burning-point of larger voltage fluctuation.
Step 104, the wafer being certainly in cascaded structure one end draws public port;
Based on the elaboration of the step 102 pair principle of the invention, the wafer of the different numbers intercepted can be a certain section, section has identical starting point or identical terminal with only having part between section, but, based on the thought of saving circuit design, all use same starting point by all sections in the present embodiment, i.e. the wafer of cascaded structure one end, the port of being drawn by this wafer is public port.
Step 106, is certainly in other more than one wafer of cascaded structure and draws series loop end;
Researcher has carried out correspondence analysis to number of wafers and its rated voltage, determine various voltage, such as 12V input voltage can only can only supply 6 wafer luminescences (its series loop connection layout as shown in Figure 1) for 4 wafer luminescences (its series loop connection layout as shown in Figure 1), 18V input voltages.Then counting from wafer corresponding to public port, with the wafer of rated voltage respective number for terminal, is defined as series loop end by this terminal.
Step 108, is connected public port with each series loop end respectively and forms series loop.
Because input voltage is different, and the rated voltage of series loop is equal with input voltage, and therefore, the wafer that the series loop end of each series loop is corresponding is all different.
Step 110, each series loop arranges conduct electrons device;
Conduct electrons device is used for the series loop according to its place of input voltage conducting, input voltage is identical with the rated voltage of series loop, and when input voltage is identical with rated voltage, this series loop connected by conduct electrons device, usually, each series loop is all in open-circuit condition.
Those skilled in the art can select existing respective electronic device according to the above-mentioned description to conduct electrons device function, and in the present embodiment, inventor adopts voltage relay.
Step 112, is all connected all conduct electrons devices with LED voltage input end.
Conduct electrons device is connected with LED voltage input end, conduct electrons device can judge input voltage value the very first time, the corresponding series loop of conduct electrons device very first time conducting in the series loop that the rated voltage identical with this input voltage is identical, makes LED light source luminous.
This method, based on current stabilization, is determined the wafer number accessed, has been departed from driver effect according to voltage, save cost, simple to operate.This design can not rely on voltage stabilizing circuit, and when power electric is pressed with fluctuation, normally uses LED, according to the brightness of LED, can carry out objective evaluation to storage battery and electrically-charging equipment simultaneously.Time as under-voltage in automobile storage battery, LED light source display brightness is not enough, and in requisition for replacing automobile storage battery.
According to LED prepared by said method, concrete structure is: LED, and as shown in Figure 1, it comprises: the LED light source of cascaded structure and more than one series loop; The wafer 2 that series loop is connected by two or more on cascaded structure is formed, each series loop arranges conduct electrons device, conduct electrons device is used for the series loop according to its place of input voltage conducting, and input voltage is identical with the rated voltage of series loop.
Consider wafer 2 resource of saving LED light source to greatest extent, avoid waste, the series circuit of a corresponding input voltage only has one, therefore, when the number of series loop is two or more, rated voltage corresponding to all series loops is all different, and Fig. 1 is the part connection layout of LED light source, comprising the series loop 6 that rated voltage is 18V, rated voltage is the series loop 5 of 12V.
Consider the complexity reducing circuit design to greatest extent, all series loops have public port 1, and public port 1 draws the wafer 2 from cascaded structure one end.
Consider the convenience that conduct electrons device is selected, voltage relay (be the voltage relay 3 of the series loop 6 of 18V as corresponding rated voltage, corresponding rated voltage is the relay 4 of the series loop 5 of 12V) is adopted to perform the application function of conduct electrons device in the present embodiment.
Consider the sensitive reaction of LED light source to input voltage, LED light source can send the light of corresponding input current the very first time, and all conduct electrons devices are all connected with the voltage input end of LED.Conduct electrons device can judge input voltage value the very first time, the corresponding series loop of conduct electrons device very first time conducting in the series loop that the rated voltage identical with this input voltage is identical, makes LED light source luminous.
This LED, based on current stabilization, is determined the wafer number accessed, has been departed from driver effect according to voltage, save cost, simple to operate.This design can not rely on voltage stabilizing circuit, and when power electric is pressed with fluctuation, normally uses LED, according to the brightness of LED, can carry out objective evaluation to storage battery and electrically-charging equipment simultaneously.Time as under-voltage in automobile storage battery, LED light source display brightness is not enough, and in requisition for replacing automobile storage battery.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. according to a method for voltage-regulation LED luminance, it is characterized in that, its step comprises:
Set up the LED light source of cascaded structure;
Described cascaded structure sets up more than one series loop, the magnitude of voltage that each described series loop is corresponding different;
Each series loop arranges conduct electrons device, and described conduct electrons device is used for the series loop according to its place of input voltage conducting, and described input voltage is identical with the rated voltage of described series loop.
2., as claimed in claim 1 according to the method for voltage-regulation LED luminance, it is characterized in that, the more than one series loop of described establishment comprises:
Public port is drawn from the wafer being in described cascaded structure one end;
Series loop end is drawn from being in other more than one wafer of described cascaded structure;
Described public port is connected with each described series loop end respectively and forms more than one series loop.
3., as claimed in claim 1 according to the method for voltage-regulation LED luminance, it is characterized in that, the wafer that the series loop end of all described series loops is corresponding is all different.
4. the method according to voltage-regulation LED luminance as described in any one of claim 1-3, is characterized in that, described conduct electrons device comprises: voltage relay.
5. as claimed in claim 4 according to the method for voltage-regulation LED luminance, it is characterized in that, described in each series loop, conduct electrons device is set after, described method also comprises: be all connected with described LED voltage input end by all described conduct electrons devices.
6. a LED, it is characterized in that, it comprises: the LED light source of cascaded structure and more than one series loop, described series loop comprises the wafer of two or more series connection on described cascaded structure, each series loop arranges conduct electrons device, described conduct electrons device is used for the series loop according to its place of input voltage conducting, and described input voltage is identical with the rated voltage of described series loop.
7. LED as claimed in claim 6, is characterized in that, when the number of described series loop is two or more, rated voltage corresponding to all described series loops is all different.
8. LED as claimed in claim 7, it is characterized in that, all described series loops have public port, and described public port draws the wafer from described cascaded structure one end.
9. the LED as described in any one of claim 6-8, is characterized in that, described conduct electrons device comprises: voltage relay.
10. LED as claimed in claim 9, it is characterized in that, all described conduct electrons devices are all connected with the voltage input end of described LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428912.9A CN105451407A (en) | 2014-08-27 | 2014-08-27 | Method for adjusting brightness of LED according to voltage and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428912.9A CN105451407A (en) | 2014-08-27 | 2014-08-27 | Method for adjusting brightness of LED according to voltage and LED lamp |
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| Publication Number | Publication Date |
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| CN105451407A true CN105451407A (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410428912.9A Pending CN105451407A (en) | 2014-08-27 | 2014-08-27 | Method for adjusting brightness of LED according to voltage and LED lamp |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040041526A1 (en) * | 2000-05-25 | 2004-03-04 | Edmund Vollrath | Traffic signal installation comprising and led-light source |
| CN101489334A (en) * | 2009-02-11 | 2009-07-22 | 北京中庆微数字设备开发有限公司 | Electrical power with preset value, controller, dispenser, dispensing system and dispensing method |
| CN101626645A (en) * | 2009-08-07 | 2010-01-13 | 上海小糸车灯有限公司 | Simulated load of automobile LED signal lamp |
| CN102595715A (en) * | 2012-01-19 | 2012-07-18 | 上海晶丰明源半导体有限公司 | Light-emitting diode (LED) linear current control circuit and LED linear circuit |
-
2014
- 2014-08-27 CN CN201410428912.9A patent/CN105451407A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040041526A1 (en) * | 2000-05-25 | 2004-03-04 | Edmund Vollrath | Traffic signal installation comprising and led-light source |
| CN101489334A (en) * | 2009-02-11 | 2009-07-22 | 北京中庆微数字设备开发有限公司 | Electrical power with preset value, controller, dispenser, dispensing system and dispensing method |
| CN101626645A (en) * | 2009-08-07 | 2010-01-13 | 上海小糸车灯有限公司 | Simulated load of automobile LED signal lamp |
| CN102595715A (en) * | 2012-01-19 | 2012-07-18 | 上海晶丰明源半导体有限公司 | Light-emitting diode (LED) linear current control circuit and LED linear circuit |
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Application publication date: 20160330 |
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