CN202392732U - light emitting device - Google Patents
light emitting device Download PDFInfo
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- CN202392732U CN202392732U CN2011204305087U CN201120430508U CN202392732U CN 202392732 U CN202392732 U CN 202392732U CN 2011204305087 U CN2011204305087 U CN 2011204305087U CN 201120430508 U CN201120430508 U CN 201120430508U CN 202392732 U CN202392732 U CN 202392732U
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- light
- emitting diode
- diode group
- light emitting
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- 239000000758 substrate Substances 0.000 claims abstract description 17
- 230000015556 catabolic process Effects 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000001960 triggered effect Effects 0.000 abstract description 11
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to a light-emitting device, which comprises a substrate, a light-emitting diode module and a plurality of bypass elements; the light-emitting diode module is arranged on the substrate and is provided with a plurality of light-emitting diode groups which are mutually connected in series, and each light-emitting diode group is defined with a working voltage; each bypass element is arranged on the substrate and is respectively connected with each light-emitting diode group in parallel, each bypass element is defined with a forward trigger voltage and a triggered working voltage, the forward trigger voltage is greater than the working voltage of the light-emitting diode group, and the working voltage of the light-emitting diode group is greater than the triggered working voltage. When any LED group is damaged, the electric energy can flow through the bypass element which is connected with the damaged LED group in parallel, and the voltage value of the electric energy when the electric energy flows through the bypass element is lower than that when the electric energy flows through the normal LED group.
Description
Technical field
The utility model is relevant for a kind of light-emitting device, the light-emitting device that particularly is connected with parallel way about a kind of light emitting diode group and bypass elements.
Background technology
Light emitting diode has characteristics such as volume is little, in light weight, optically focused property is good, power saving, life-span length, therefore is widely used in the various electronic installations.
General existing mode is that a plurality of single light emitting diodes is connected each other, and is arranged on the circuit board, to form a light-emitting device.Yet, when one of them damage of said each light emitting diode and when not luminous, can cause entire circuit to be the state that opens circuit, make that other normal light emitting diode also can't be luminous.
In order to solve above-mentioned disappearance, some improvement schemes are suggested, and wherein modal is to utilize Zener diode (zener diode).In detail, a plurality of Zener diodes can be parallelly connected with said each light emitting diode respectively, with the bypass resistance that damages as light emitting diode.So, when one of them light emitting diode damaged, electric energy can change from " with the parallelly connected Zener diode of light emitting diode that damages " and flows through, so that other normal light emitting diode still can be normally luminous.
Yet when electrical energy flows was crossed Zener diode, its magnitude of voltage can significantly raise, and the power of the power supply unit of feasible supply light-emitting device electric energy also increases.Cause more Zener diode all to have electrical energy flows out-of-date if there is more light emitting diode to damage, the power of power supply unit can increase acute, so that power supply unit may damage.
The utility model content
One purpose of the utility model is to provide a kind of light-emitting device, and this light-emitting device can let electric energy walk around the light emitting diode group of damage, make that other normal light emitting diode group still can be luminous, and the power that light-emitting device consumed can not increase.
For reaching above-mentioned purpose, the light-emitting device of the utility model comprises: substrate; Light-emitting diode (LED) module is arranged on this substrate, and has the light emitting diode group that several definition have operating voltage, and said each light emitting diode group is electrically connected mutually with series system; And several definition have the forward trigger voltage and trigger the bypass elements of back operating voltage, are arranged on this substrate, and are electrically connected on said each light emitting diode group respectively with parallel way; Wherein, this said definition light emitting diode group that operating voltage arranged for this operating voltage greater than the light emitting diode group of this triggering back operating voltage less than this forward trigger voltage.
Preferably, this substrate has power supply terminal and ground terminal, and this power supply terminal connects the positive terminal of this light-emitting diode (LED) module, and this ground terminal connects the negative pole end of this light-emitting diode (LED) module.
Preferably, said each light emitting diode group respectively has the light-emitting diode chip for backlight unit that several are in series.
Preferably, said each light emitting diode group respectively has the light-emitting diode chip for backlight unit that several are in parallel.
Preferably, said each light-emitting diode chip for backlight unit respectively is the High Power LED chip.
Preferably, said each bypass elements also has the bypass elements of reverse trigger voltage for definition, and said each light emitting diode group also has breakdown voltage and this breakdown voltage light emitting diode group greater than this reverse trigger voltage for definition.
Preferably, described light-emitting device also comprises power supply unit, connects this light-emitting diode (LED) module, to supply electric energy to this light-emitting diode (LED) module.
Preferably, described light-emitting device also comprises monitoring module, connects this light-emitting diode (LED) module, to monitor the power consumption of this light-emitting diode (LED) module.
The beneficial effect of the utility model is: the light-emitting device of the utility model, this light emitting diode group and bypass elements are in parallel, and so that bypass elements can be used as the bypass resistance of light emitting diode group when damaging, and then make light-emitting diode (LED) module can not be open circuit.In addition, when bypass elements triggered, the electric energy that bypass elements consumed can be littler than normal light emitting diode group.In addition, even light-emitting device connects with power supply unit is contrary, the light emitting diode group can not damaged because of puncture yet.
Description of drawings
Fig. 1 is the sketch map of first preferred embodiment of the light-emitting device of the utility model;
Fig. 2 is a structural representation of the light emitting diode group of Fig. 1;
Fig. 3 is for being another structural representation of the light emitting diode group of Fig. 1;
Fig. 4 is a voltage-current curve sketch map of the bypass elements of Fig. 1;
Fig. 5 is a function situation sketch map of the light-emitting device of Fig. 1;
Fig. 6 is another function situation sketch map of the light-emitting device of Fig. 1;
Fig. 7 is the another function situation sketch map of the light-emitting device of Fig. 1.
Wherein:
1 light-emitting device, 11 substrates
111 power supply terminals, 112 ground terminals
12 light-emitting diode (LED) modules 121,122,121a, 121b light emitting diode group
1211,1212 light-emitting diode chip for backlight unit 13,13A bypass elements
131 forward trigger voltages 132 trigger the back operating voltage
133 operating voltages, 134 reverse trigger voltages
135 breakdown voltages, 2 power supply units
21 power positive ends, 22 power-s are extreme
3 monitoring modules.
The specific embodiment
See also shown in Figure 1ly, be the sketch map of first preferred embodiment of the light-emitting device of the utility model.This light-emitting device 1 comprises a substrate 11, a light-emitting diode (LED) module 12, several bypass elements 13.
Light-emitting diode (LED) module 12 is arranged on the substrate 11, and light-emitting diode (LED) module 12 has several light emitting diode groups 121, and said each light emitting diode group 121 is electrically connected mutually with series system.Each light emitting diode group 121 definition has an operating voltage; When the forward bias of light emitting diode group 121 reached this operating voltage, light emitting diode group 121 can be triggered and emit beam.Each light emitting diode group 121 also defines has one to puncture voltage; When the reverse bias of light emitting diode group 121 reached this breakdown voltage, light emitting diode group 121 can produce punch-through, made a large amount of current reversibilities to flowing through light emitting diode group 121, and light emitting diode group 121 might be damaged at this moment.
See also Fig. 2 and shown in Figure 3, be respectively a structural representation of the light emitting diode group of Fig. 1.Light emitting diode group 121 has two kinds of constituted modes at least, and is wherein a kind of as shown in Figure 2, and light emitting diode group 121a can have several light-emitting diode chip for backlight unit 1211, and said each light-emitting diode chip for backlight unit 1211 is electrically connected with series system each other; And another kind of as shown in Figure 3, light emitting diode group 121b can have several light-emitting diode chip for backlight unit 1212, and said each light-emitting diode chip for backlight unit 1212 is electrically connected with parallel way each other.The user can select a kind of of above-mentioned two kinds of situation according to actual demand, or mixes use with two kinds; No matter which kind of is, light-emitting diode chip for backlight unit 1211,1212 all can be a High Power LED chip.
Please consult Fig. 1 again, said each bypass elements 13 is arranged on the substrate 11, and is electrically connected on said each light emitting diode group 121 respectively with parallel way.Bypass elements 13 is an integrated circuit component, and it has a special electric characteristics.In detail, please cooperate with reference to shown in Figure 4, it is an i-v curve figure of the bypass elements of Fig. 1.But bypass elements 13 forwards trigger, so bypass elements 13 definition have a forward trigger voltage 131 and to trigger back operating voltage 132; When the forward bias of bypass elements 13 reaches this forward trigger voltage 131, but bypass elements 13 can be triggered and make the electric energy positive flow cross bypass elements 13; And bypass elements 13 is in case after triggering, the voltage that flows through the electric energy of bypass elements 13 can drop to this triggering back operating voltage 132.
What need explanation is, the operating voltage 133 of light emitting diode group 121 is less than forward trigger voltage 131, and operating voltage 133 is greater than triggering back operating voltage 132.In other words, operating voltage 133 is between forward trigger voltage 131 and triggering back operating voltage 132.
In addition, bypass elements 13 also can reversely trigger, so bypass elements 13 definition have a reverse trigger voltage 134; When the reverse bias of bypass elements 13 reached this reverse trigger voltage 134, bypass elements 13 can be triggered and make electric energy can reversely flow through bypass elements 13.This reverse trigger voltage 134 can be less than the breakdown voltage 135 of light emitting diode group 121.
Please consult Fig. 1 again, the utility model can further comprise a monitoring module 3, and this monitoring module 3 is connected in power supply unit 2, and the power consumption situation of light-emitting device 1 is monitored in the variation of the electric energy power of being exported in order to monitoring power supply supply 2 whereby.
Please refer to Fig. 5, be a function situation sketch map of the light-emitting device of Fig. 1.Under the normal condition, the power supply terminal of light-emitting device 1 111 can connect the power positive end 21 of power supply units 2, and that ground terminal 112 connects power-s is extreme 22, and the electric energy that makes power supply unit 2 supplied can flow to ground terminal 112 from power supply terminal 111.
If this moment light-emitting device 1 light emitting diode group 121 all be normal, do not have a damage, electric energy all can flow through and lights light emitting diode group 121 from light emitting diode group 121; Electric energy can flow through from bypass elements 13 hardly, because the forward trigger voltage 131 of bypass elements 13 is greater than the trigger voltage 131 (as shown in Figure 4) of light emitting diode group 121.In other words, be normal when damage of not having in light emitting diode group 121, bypass elements 13 can not be triggered.
Please refer to Fig. 6, be another function situation sketch map of the light-emitting device of Fig. 1.When one of them light emitting diode group of light-emitting device 1 is damaged (for example the light emitting diode group 122), make that when light-emitting diode (LED) module 12 presented open circuit, electric energy can can't flow through the light emitting diode group 122 of damage.At this moment, the forward bias of " the bypass elements 13A parallelly connected with light emitting diode group 122 " can begin to rise to forward trigger voltage 131, makes bypass elements 13A trigger.
After bypass elements 13A triggered, electric energy can change from bypass elements 13A and flows through the light emitting diode group 121 to light emitting diode group 122, makes that other normal light emitting diode groups 121 still can be luminous.After bypass elements 13A triggered, the forward bias of bypass elements 13A can drop to and trigger back operating voltage 132 (as shown in Figure 4).
Because it is lower than the operating voltage 133 of light emitting diode group 121 to trigger back operating voltage 132, the electric energy that " light-emitting device 1 that has light emitting diode group 122 to damage " consumed can than " light-emitting device 1 that does not have light emitting diode group 122 to damage " consumed also low.Therefore, when monitoring module 3 descends as if the consumed power that monitors light-emitting device 1, can learn that light-emitting device 1 has a light emitting diode group 122 to damage.
See also shown in Figure 7ly, be the another function situation sketch map of the light-emitting device of Fig. 1.If the user is connected in the ground terminal 112 of light-emitting device 1 positive terminal 21 of power supply unit 2 accidentally; And when power supply terminal 111 is connected in negative pole end 22; Be contrary the connecing of both positive and negative polarity of the both positive and negative polarity and the power supply unit 2 of light-emitting device 1, electric energy can desire flow to power supply terminal 111 from ground terminal 112.At this moment, light emitting diode group 121 and bypass elements 13 all can be born reverse bias.
Because the reverse trigger voltage 134 of bypass elements 13 is less than the breakdown voltage 135 (as shown in Figure 4) of light emitting diode group 121, bypass elements 13 can be triggered because of reverse bias earlier, makes electric energy can pass through bypass elements 13.So, the reverse bias that light emitting diode group 121 is born can significantly reduce, in order to avoid puncture, damage the generation of phenomenon.In other words, when light-emitting device 1 and power supply unit 2 contrary connecing, bypass elements 13 can protect light emitting diode group 121 can not damage.
In sum, the light-emitting device of the utility model is in parallel this light emitting diode group and bypass elements, so that bypass elements can be used as the bypass resistance of light emitting diode group when damaging, and then makes light-emitting diode (LED) module can not be open circuit.In addition, when bypass elements triggered, the electric energy that bypass elements consumed can be littler than normal light emitting diode group.In addition, even light-emitting device connects with power supply unit is contrary, the light emitting diode group can not damaged because of puncture yet.
But above-mentioned said person is merely the preferred embodiment of the utility model, when not limiting the scope that the utility model is implemented with this; And the equalization variation and modification done according to the utility model claim generally, all should still belong to the scope that the utility model patent contains.
Claims (8)
1. a light-emitting device is characterized in that, comprises:
Substrate;
Light-emitting diode (LED) module is arranged on this substrate, and has the light emitting diode group that several definition have operating voltage, and said each light emitting diode group is electrically connected mutually with series system; And
Several definition have the forward trigger voltage and trigger the bypass elements of back operating voltage, are arranged on this substrate, and are electrically connected on said each light emitting diode group respectively with parallel way;
Wherein, said definition light emitting diode group that operating voltage arranged for this operating voltage greater than the light emitting diode group of this triggering back operating voltage less than this forward trigger voltage.
2. light-emitting device as claimed in claim 1 is characterized in that this substrate has power supply terminal and ground terminal, and this power supply terminal connects the positive terminal of this light-emitting diode (LED) module, and this ground terminal connects the negative pole end of this light-emitting diode (LED) module.
3. light-emitting device as claimed in claim 1 is characterized in that, said each light emitting diode group respectively has the light-emitting diode chip for backlight unit that several are in series.
4. light-emitting device as claimed in claim 1 is characterized in that, said each light emitting diode group respectively has the light-emitting diode chip for backlight unit that several are in parallel.
5. like claim 3 or 4 described light-emitting devices, it is characterized in that said each light-emitting diode chip for backlight unit respectively is the High Power LED chip.
6. light-emitting device as claimed in claim 1; It is characterized in that; Said each bypass elements also has the bypass elements of reverse trigger voltage for definition, and said each light emitting diode group also has breakdown voltage and this breakdown voltage light emitting diode group greater than this reverse trigger voltage for definition.
7. light-emitting device as claimed in claim 1 is characterized in that, also comprises power supply unit, connects this light-emitting diode (LED) module, to supply electric energy to this light-emitting diode (LED) module.
8. light-emitting device as claimed in claim 1 is characterized in that, also comprises monitoring module, connects this light-emitting diode (LED) module, to monitor the power consumption of this light-emitting diode (LED) module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100219236U TWM423921U (en) | 2011-10-14 | 2011-10-14 | Lighting device |
| TW100219236 | 2011-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202392732U true CN202392732U (en) | 2012-08-22 |
Family
ID=46461122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204305087U Expired - Fee Related CN202392732U (en) | 2011-10-14 | 2011-11-03 | light emitting device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202392732U (en) |
| TW (1) | TWM423921U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107277979A (en) * | 2017-07-14 | 2017-10-20 | 北京汇冠触摸技术有限公司 | A kind of LED radiated elements and the electronic installation comprising the element |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201401586A (en) * | 2012-06-19 | 2014-01-01 | Han-Guang Chen | Manufacturing method of LED lighting device |
| TWI639794B (en) * | 2017-03-20 | 2018-11-01 | 蔡高德 | Led plane light source lamp |
| TWI616616B (en) | 2017-03-20 | 2018-03-01 | 蔡高德 | LED plane light source lamp |
-
2011
- 2011-10-14 TW TW100219236U patent/TWM423921U/en not_active IP Right Cessation
- 2011-11-03 CN CN2011204305087U patent/CN202392732U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107277979A (en) * | 2017-07-14 | 2017-10-20 | 北京汇冠触摸技术有限公司 | A kind of LED radiated elements and the electronic installation comprising the element |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM423921U (en) | 2012-03-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FUJING TECHNOLOGY INC. Free format text: FORMER OWNER: CCTLED TECHNOLOGY CO., LTD. Effective date: 20140504 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140504 Address after: Taiwan Hsinchu County Chinese jhubei City, Taiwan 8 yuan a Street No. 6 Building 6 Patentee after: FUJING INTEGRATED TECHNOLOGY INC. Address before: Taiwan Hsinchu County Chinese jhubei City, Taiwan 5 yuan a Street No. 10 Building 3 Patentee before: CCTLED TECHNOLOGY GROUP CO. LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20161103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |