CN101043771A - Light-emitting diode car lamp device - Google Patents
Light-emitting diode car lamp device Download PDFInfo
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- CN101043771A CN101043771A CN200610068221.8A CN200610068221A CN101043771A CN 101043771 A CN101043771 A CN 101043771A CN 200610068221 A CN200610068221 A CN 200610068221A CN 101043771 A CN101043771 A CN 101043771A
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Abstract
The LED vehicle device comprises: a control circuit connected with a power unit and the light module, and the light module included composite LED units every as composite serial LED's. Wherein, the control circuit with an allowable value detects the light module to obtain a detected value, and forces other LED units turning off when one LED unit fails.
Description
Technical field
The present invention is about a kind of light-emitting diode (LED) car lamp device, especially refer to an a kind of light-emitting diode (LED) car lamp device with a control circuit, wherein break down and the electrical characteristic of this light emitting module when therefore changing at one or more light emitting diodes, this control circuit forces the power supply that cuts off this light-emitting diode (LED) car lamp device.
Background technology
Our life now just marching toward one flourish; and the science epoch of quick rhythm; for the people that live in the city; on and off duty or go out play more with vapour; locomotive is as the vehicles; and so various vehicle together freely relaxes on road; but can keep certain sequence; the situation that can disorder not; the driver must observe set rules of society and the rule that is handed down; avoid the unclear and cognitive incorrect situation of driver's idea on road of vehicle that lives and properties are damaged; the car light that these vehicles assembled is exactly a kind of example; many driver's steering vehicles are on road the time; whether shinny by front vehicles tailstock car light; the driver can learn next step action of front vehicles; so that the driver makes corresponding defence action, the vehicle itself of protecting the driver and being driven according to this information.
The car light that the general vehicles are assembled, see also shown in Figure 1, be in a lamp driving circuit 4, to be provided with a controller 40, this controller 40 is connected with a plurality of LED light strings 41 that are in parallel, this controller 40 is in order to control the luminance of those LED light strings 41, arbitrary LED light string 41 by a plurality of light-emitting diodes 410 be in series the institute form, because after the manufacturer need consider to use a period of time when making car light, may have under the situation of the old or other reasons of light-emitting diode 410 and be damaged, and after arbitrary light-emitting diode 410 faults, have only the LED light string 41 under this light-emitting diode 410 thereby extinguish, the still sustainable work of remaining LED light string 41, and show certain brightness, so, the still sustainable use vehicle of driver, extinguish up to remaining LED light string 41 complete failures, or after the not enough use of the illuminated area scope that is contained, the driving talent conference is substituted the LED light string 41 of fault.
Yet, the driver extinguishes fully at LED light string 41, or before the not enough use of the illuminated area scope that is contained, though last LED light string 41 still has light, but if the brightness that it sent has lost the due brightness of former car light, may make the driver harm take place or when car light is a tail-light in when driving, because of the tail-light luminance shortage, the shortcoming that can't fully warn for back car, so, how a kind of light-emitting diode (LED) car lamp device is proposed, make the driver can conveniently reach the decision procedure that picks out this luminosity simply, with this light-emitting diode (LED) car lamp device of inference operate as normal whether, promptly become an important topic that needs to be resolved hurrily at present.
Summary of the invention
In view of this, for helping convenient and pick out the decision procedure of luminosity simply, and grasp the best opportunity of changing car light, the inventor is through the permanent research and experiment of making great efforts, and development and Design goes out a kind of light-emitting diode (LED) car lamp device of the present invention finally.
One object of the present invention, provide a kind of light-emitting diode (LED) car lamp device, this light-emitting diode (LED) car lamp device comprises a control circuit and a light emitting module, this control circuit is connected with a power supply unit and this light emitting module respectively, this light emitting module comprises a plurality of light emitting diodes that are in parallel, arbitrary light emitting diode is formed by a plurality of light-emitting diodes that are in series, this control circuit is provided with a feasible value, and this control circuit is detected this light emitting module to obtain a detecting value, when light emitting diode produces fault, when this control circuit finds that this detecting value does not meet this feasible value, this control circuit forces remaining light emitting diode to lose required power supply fully, so, the driver does not just need between the brightness power, judging whether to change light emitting diode, so that the whether decision procedure of operate as normal of convenient and this light-emitting diode (LED) car lamp device of simple and easy identification to be provided, with in good time maintenance or change this car light.
Can be for just your auditor to purpose of the present invention, shape, constructing apparatus feature and effect thereof, do further understanding and understand, now, be described in detail as follows for the embodiment conjunction with figs.:
Description of drawings
Fig. 1 is a block diagram of known technology;
Fig. 2 is a block diagram of the present invention;
Fig. 3 is the embodiments of the invention circuit diagrams.
Embodiment
The present invention is a kind of light-emitting diode (LED) car lamp device, please consult shown in Figure 1 once more, this light-emitting diode (LED) car lamp device 1 comprises a control circuit 10 and a light emitting module 20 (as: taillight module), this control circuit 10 is provided with a feasible value (as: conditional content), respectively with a power supply unit 30 (as: cell apparatus, Battery) and this light emitting module 20 be connected, and detect a detecting value (as: current value or voltage difference) at this light emitting module 20, this light emitting module 20 is provided with a plurality of light emitting diodes 21 (as: light-emitting diode Light EmittingDiode lamp string), common again and these control circuits 10 of those 21 parallel with one another joining of light emitting diode (Parallel) be connected in series (Series), when losing its characteristics of luminescence if light emitting diode 21 breaks down, the detecting value of this light emitting module 20 just so to some extent changes, when light emitting diode 21 produces fault, when this control circuit 10 finds that this detecting value does not meet this feasible value, this control circuit 10 forces remaining light emitting diode 21 to lose required power supply fully, and lose the characteristics of luminescence in the lump, so, the user can judge easily that just the light emitting diode 21 in this light-emitting diode (LED) car lamp device 1 loses luminous efficacy.
Among the present invention, please consult shown in Figure 1 once more, can be divided into a current sense unit 11 (Controller Unit) in this control circuit 10, an one induced current resistance 12 (inducedresistance) and a relay unit 13 (Relay), wherein this current sense unit 11 is connected with this power supply unit 30, and according to a plurality of or all light emitting diodes 21 current value of this light emitting module 20 of flowing through or voltage difference and preset this feasible value when luminous, and this induced current resistance 12 is connected with this relay unit 13 with this current sense unit 11 respectively, in order to provide this light emitting module 20 of detecting to obtain this detecting value, this relay unit 13 is connected with this light emitting module 20; When at least one light emitting diode 21 breaks down and can't be luminous, this current sense unit 11 utilizes the detecting value of these induced current resistance 12 gained to compare with this feasible value, and when not meeting this feasible value, and make this relay unit 13 cut off the power supply of this light emitting module 20 of flowing through, open circuit (Break Circuit) so that this light emitting module 20 and this control circuit 10 form, and make all light emitting diodes 21 lose the characteristics of luminescence.
Preferred embodiment among the present invention, see also shown in Figure 2, this current sense unit 11 can be a micro-control unit (as: cpu central processing unit), this current sense unit 11 is provided with a plurality of pins of outside connection, wherein those pins include one first respectively, two, and three pins 111,112,113, this first pin 111 is connected with this power supply unit 30, and this first pin 111 and second pin 112 are connected with the two ends of this induced current resistance 12 respectively to pass an input value and an output valve respectively back, and relatively this first pin 111 and the obtained input value of second pin 112, output valve and obtain this detecting value, therefore detect this detecting value at the two ends of this induced current resistance 12 when not meeting this feasible value when this current sense unit 11, this current sense unit 11 just makes this relay unit 13 cut off the power supply of this light emitting module 20 of flowing through, open circuit (BreakCircuit) so that this light emitting module 20 and this control circuit 10 form, and make all light emitting diodes 21 lose the characteristics of luminescence.
And the 3rd pin 113 is connected with this relay unit 13, can notify this relay unit 13 to cut off the power supply of this light emitting module 20 of flowing through; In addition, please consult shown in Figure 2 once more, include a relay switch 131 and a circle control elements 132 in this relay unit 13, this relay switch 131 is located at 12 of this light emitting module 20 and this induced current resistance, this circle control elements 132 is connected with this relay switch 131 and the 3rd pin 113 respectively, and this circle control elements 132 can receive by the notice of the 3rd pin 113 and to this relay switch and send an enabling signal so that this light emitting module 20 and this control circuit 10 form opens circuit.
Among this embodiment, when this light emitting module 20 has five groups of light emitting diodes that are in parallel 21, arbitrary light emitting diode 21 is five light-emitting diodes that are in series 211 (as: LED bulbs), if the arbitrary light-emitting diode 211 in arbitrary light emitting diode 21 hinders for some reason and extinguishes, then the light emitting diode 21 under this light-emitting diode 211 just can't be worked, lose its characteristics of luminescence, the current value (promptly should detecting value) that this moment, this current sense unit 11 was passed the comparison gained back by this first pin 111 and this second pin 112 is less than a current value (this feasible value) of all light emitting diodes 21 this light emitting module 20 of flowing through when luminous, this current sense unit 11 is just sent to start the enabling signal of this relay switch 131 through this circle control elements 132 by the 3rd pin 113, make this relay switch 131 cut off the power supply of this light emitting module 20 of flowing through, and make remaining four groups of light emitting diode that are in parallel 21 lose the characteristics of luminescence in the lump.
In the above embodiments, please consult shown in Figure 2 once more, in five groups of light emitting diodes that are in parallel 21 of this light emitting module 20, it is required to suppose that brightness that wantonly three light emitting diodes 21 are showed just meets traffic safety, in other words, if 20 of this light emitting modules extinguish wantonly two groups of light emitting diodes 21, remaining three groups of light emitting diode 21 still can work on, still enough meet the required brightness of traffic safety, and do not need horse back to change those light emitting diodes 21, if adopt arbitrary group of light emitting diode 21 to extinguish, just force remaining four groups of light emitting diode 21 to lose the characteristics of luminescence in the lump, under realistic consideration for fear of lacking flexibility and flexible, therefore, in the another embodiment of the present invention, please consult shown in Figure 2 once more, this feasible value can be made as a current value or the voltage difference of the light emitting diode 21 of some this light emitting module 20 of flowing through when luminous, the light emitting diode 21 of so-called some is the quantity of required light emitting diode 21 under the consideration that meets the required brightness of traffic safety, therefore, this current sense unit 11 by this detecting values one of this induced current resistance 12 two ends gained until not meeting this feasible value, the 3rd pin 113 just sends this enabling signal to this relay unit 13, flow to the power supply of this light emitting module 20 with cut-out, for example, break down when wantonly two light emitting diodes 21 and can't be luminous, this detecting value still falls within this feasible value, promptly, this current sense unit 11 still can not make this relay unit 13 cut off the power supply that flows to this light emitting module 20, therefore, whether the present invention only needs this light-emitting diode (LED) car lamp device 1 of identification luminous, judge whether operate as normal of this light-emitting diode (LED) car lamp device 1, to provide convenience and the decision procedure of simple and easy this luminosity of identification, with in good time maintenance or change this car light.
What deserves to be explained is; the present invention can be applicable to the tail-light of the vehicles; the minority light emitting diode that meaning is used for its tail-light produces fault; just force disablement; so that the whether decision procedure of operate as normal of convenient and this light-emitting diode (LED) car lamp device of simple and easy identification of driver one clearly to be provided; this control circuit 10 wherein only is a notion title of representative target of the present invention; the variation of these light emitting module 20 power supply characteristics is detected in any utilization; this light emitting module 20 is forced to lose the enforcement means and the element of lighting function with decision; all under the scope that the present invention is contained and protected; therefore; each above-mentioned embodiment only is a specific embodiment of the best of the present invention; but structural feature of the present invention is not limited thereto; any those skilled in the art are in field of the present invention; the variation that can expect easily or modification all can be encompassed in the claim scope of the present invention.
Claims (11)
1, a kind of light-emitting diode (LED) car lamp device is characterized in that, comprises:
One light emitting module joins with a power supply unit, and this light emitting module comprises a plurality of light emitting diodes parallel with one another, and respectively this light emitting diode is respectively a plurality of light-emitting diodes that are in series and forms;
One control circuit, be located between this power supply unit and this light emitting module, this control circuit is provided with a feasible value, and this control circuit is detected this light emitting module to obtain a detecting value, when this control circuit does not meet this feasible value in this detecting value, promptly cut off the power supply of this light emitting module.
2, light-emitting diode (LED) car lamp device as claimed in claim 1, wherein this control circuit comprises:
One induced current resistance is located in this control circuit, in order to provide this light emitting module of detecting to obtain this detecting value;
One relay unit is connected with this induced current resistance and this light emitting module respectively, can cut off the power supply of this light emitting module of flowing through, and forms one and open circuit between this light emitting module and this control circuit;
One current sense unit, be connected with this power supply unit and this induced current resistance respectively, and built-in this feasible value, the detecting value of this induced current resistance gained of this current sense unit by using is compared with this feasible value, and when not meeting this feasible value, this relay unit is formed between this light emitting module and this control circuit open circuit.
3, light-emitting diode (LED) car lamp device as claimed in claim 2, wherein this current sense unit can be a micro-control unit, is provided with a plurality of pins of outside connection, and wherein those pins comprise respectively:
One first pin is connected with an end of this power supply unit and this induced current resistance, and passes an input value back at this end;
One second pin is connected with the other end of this induced current resistance, and passes an output valve back at this other end;
One the 3rd pin is connected with this relay unit, can notify this relay unit to form between this light emitting module and this control circuit and open circuit.
4, light-emitting diode (LED) car lamp device as claimed in claim 3 wherein comprises in this relay unit:
One relay switch is located between this light emitting module and this induced current resistance, after obtaining an enabling signal, makes to form between this light emitting module and this control circuit and opens circuit;
One circle control elements is connected with this relay switch and the 3rd pin respectively, accepts the notice of the 3rd pin, and this relay switch is sent this enabling signal.
5, light-emitting diode (LED) car lamp device as claimed in claim 4, wherein this current sense unit is in the comparison of this input value and this output valve and produce this detecting value.
6, light-emitting diode (LED) car lamp device as claimed in claim 5, wherein this input value, this output valve and this detecting value are all current value.
7, light-emitting diode (LED) car lamp device as claimed in claim 5, wherein this input value, this output valve and this detecting value are all voltage difference.
8, light-emitting diode (LED) car lamp device as claimed in claim 6, wherein this feasible value is a current value of all these light emitting diodes this light emitting module of flowing through when luminous.
9, light-emitting diode (LED) car lamp device as claimed in claim 7, wherein this feasible value is a voltage difference of all these light emitting diodes this light emitting module of flowing through when luminous.
10, light-emitting diode (LED) car lamp device as claimed in claim 6, wherein this feasible value is a current value of a plurality of light emitting diodes this light emitting module of flowing through when not luminous.
11, light-emitting diode (LED) car lamp device as claimed in claim 7, wherein this feasible value is a voltage difference of a plurality of light emitting diodes this light emitting module of flowing through when not luminous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610068221.8A CN101043771A (en) | 2006-03-20 | 2006-03-20 | Light-emitting diode car lamp device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610068221.8A CN101043771A (en) | 2006-03-20 | 2006-03-20 | Light-emitting diode car lamp device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101043771A true CN101043771A (en) | 2007-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610068221.8A Pending CN101043771A (en) | 2006-03-20 | 2006-03-20 | Light-emitting diode car lamp device |
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| Country | Link |
|---|---|
| CN (1) | CN101043771A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033174A (en) * | 2010-09-30 | 2011-04-27 | 中国铁路通信信号上海工程集团有限公司 | Indicator as well as fault diagnosis system and method thereof |
| CN102087341A (en) * | 2010-12-20 | 2011-06-08 | 中国神华能源股份有限公司 | LED light source detection device |
| CN102340910A (en) * | 2010-07-28 | 2012-02-01 | 咸瑞科技股份有限公司 | Light emitting diode control circuit |
| CN103617666A (en) * | 2013-11-29 | 2014-03-05 | 黄家亨 | Access control system based on visible light communication |
| CN104093258A (en) * | 2013-06-24 | 2014-10-08 | 苏州天鸣信息科技有限公司 | Fluorescent lamp fault detection automatic power-off device and method thereof |
| CN102037278B (en) * | 2008-03-20 | 2015-04-08 | 美国航易明国际有限公司 | Illumination device and fixture |
| CN105196933A (en) * | 2015-10-09 | 2015-12-30 | 无锡富绅电子科技有限公司 | Multifunctional vehicle lamplight controller |
-
2006
- 2006-03-20 CN CN200610068221.8A patent/CN101043771A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102037278B (en) * | 2008-03-20 | 2015-04-08 | 美国航易明国际有限公司 | Illumination device and fixture |
| CN102340910A (en) * | 2010-07-28 | 2012-02-01 | 咸瑞科技股份有限公司 | Light emitting diode control circuit |
| CN102033174A (en) * | 2010-09-30 | 2011-04-27 | 中国铁路通信信号上海工程集团有限公司 | Indicator as well as fault diagnosis system and method thereof |
| CN102087341A (en) * | 2010-12-20 | 2011-06-08 | 中国神华能源股份有限公司 | LED light source detection device |
| CN104093258A (en) * | 2013-06-24 | 2014-10-08 | 苏州天鸣信息科技有限公司 | Fluorescent lamp fault detection automatic power-off device and method thereof |
| CN103617666A (en) * | 2013-11-29 | 2014-03-05 | 黄家亨 | Access control system based on visible light communication |
| CN105196933A (en) * | 2015-10-09 | 2015-12-30 | 无锡富绅电子科技有限公司 | Multifunctional vehicle lamplight controller |
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