CN201657388U - Constant-current chip packaging body and luminous diode lamp driven by alternating current - Google Patents
Constant-current chip packaging body and luminous diode lamp driven by alternating current Download PDFInfo
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- CN201657388U CN201657388U CN2010200012237U CN201020001223U CN201657388U CN 201657388 U CN201657388 U CN 201657388U CN 2010200012237 U CN2010200012237 U CN 2010200012237U CN 201020001223 U CN201020001223 U CN 201020001223U CN 201657388 U CN201657388 U CN 201657388U
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- 238000004806 packaging method and process Methods 0.000 title claims description 8
- 230000001681 protective effect Effects 0.000 claims description 31
- 239000013078 crystal Substances 0.000 claims description 22
- 230000005669 field effect Effects 0.000 claims description 21
- 229910044991 metal oxide Inorganic materials 0.000 claims description 20
- 150000004706 metal oxides Chemical class 0.000 claims description 20
- 230000003071 parasitic effect Effects 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 241000580063 Ipomopsis rubra Species 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model relates to a luminous diode lamp driven by alternating current, comprising at least one first constant-current device, at least one second constant-current device and at least one luminous diode load, wherein one end of the first constant-current device is connected with the first connecting end of alternating current, and one end of the second constant-current device is connected with the second connecting end of the alternating current. The luminous diode load is connected between the first constant-current device and the second constant-current device in series. A luminous diode can be protected by the current-limiting function of the first constant-current device and the second constant-current device.
Description
Technical field
The utility model relevant a kind of decide electric current chip packing-body and led lamp are particularly a kind ofly decided the electric current chip packing-body and to exchange electrically driven (operated) led lamp.
Background technology
(light-emitting diode LED) has that volume is little, an advantage such as long service life and power saving to light-emitting diode, so light-emitting diode has been widely used in purposes such as multiple illumination and decoration.A kind of existing light-emitting diode (LED) module with dc powered needs rectification circuit or power supply changeover device, so that AC power is converted to DC power supply.Because rectification circuit or power supply changeover device all need bigger printed circuit board (PCB), therefore the volume with the light-emitting diode (LED) module of dc powered is bigger, and cost is also higher.
Another kind of existing be that at least two light-emitting diodes are connected in parallel in the opposite direction to exchange electrically driven (operated) light-emitting diode (LED) module, and between light-emitting diode and AC power series resistor.So, when first half period of alternating current, drive unidirectional light-emitting diode, and when second half period of alternating current, drive rightabout light-emitting diode.Because circuit structure is simple, therefore, than the light-emitting diode (LED) module with dc powered, all less with the volume and the cost that exchange electrically driven (operated) light-emitting diode (LED) module.
Yet,, may burn light-emitting diode because of the surging of AC power if AC power is directly put on the light-emitting diode (LED) module.Though thereby the maximum that adopts the resistance of higher resistance value can limit electric current provides higher protection, the power that the resistance of high value has a higher proportion is converted into heat and wastes, and lower electric current makes that the luminous efficiency of light-emitting diode is relatively poor.In addition, the size of electric current can change along with the variation of voltage, therefore is difficult for controlling effectively the brightness of light-emitting diode.
In sum, how providing stable electric current, is the target that the present utmost point need be made great efforts thereby avoid to exchange that electrically driven (operated) light-emitting diode (LED) module burns.
The utility model content
The utility model provides a kind of and decides the electric current chip packing-body and to exchange electrically driven (operated) led lamp; it is to be provided with to decide current device between AC power and light-emitting diode; thereby restriction puts on the maximum of the electric current of light-emitting diode, protects light-emitting diode thus.
An embodiment of the present utility model comprises that to exchange electrically driven (operated) led lamp at least one first decides current device, at least one second decides current device and at least one first LED load.First end of deciding current device is connected with first link of alternating current.First decides current device comprises first constant-current circuit and first protective circuit in parallel with this first constant-current circuit; wherein first constant-current circuit allows the electric current of first half period of alternating current to pass through, and first protective circuit allows the electric current of second half period of alternating current to pass through.Second end of deciding current device is connected with second link of alternating current.Second decides current device comprises second constant-current circuit and second protective circuit in parallel with this second constant-current circuit; wherein second constant-current circuit allows the electric current of second half period of alternating current to pass through, and second protective circuit allows the electric current of first half period of alternating current to pass through.First LED load then is serially connected with first and decides current device and second and decide between the current device.
Another embodiment of the present utility model decides the electric current chip packing-body and can be applied to exchange electrically driven (operated) led lamp.Decide the electric current chip packing-body and comprise that first bearing, first is decided electric current crystal grain, second bearing, second is decided electric current crystal grain and packaging body.First bearing and second bearing have independently electrical.First decides electric current crystal grain and second decides electric current crystal grain and is provided with and is electrically connected on first bearing and second bearing respectively; Wherein, first decides electric current crystal grain and comprises aforementioned first constant-current circuit and first protective circuit; Second decides electric current crystal grain comprises aforementioned second constant-current circuit and second protective circuit.Packaging body then coats first to be decided electric current crystal grain and second and decides electric current crystal grain.
Below, will cooperate appended accompanying drawing to illustrate in detail by specific embodiment, thus the effect that can be easier to understand the purpose of this utility model, technology contents, characteristics and be reached.
Description of drawings
Fig. 1 a is a schematic diagram, show embodiment of the present utility model to exchange electrically driven (operated) led lamp.
Fig. 1 b is a schematic diagram, shows the current device of deciding of embodiment of the present utility model.
Fig. 2 a to Fig. 2 d is a schematic diagram, shows the LED load of embodiment of the present utility model.
Fig. 3 a and Fig. 3 b are a schematic diagram, show embodiment of the present utility model to exchange electrically driven (operated) led lamp.
Fig. 4 to Fig. 7 is a schematic diagram, show a plurality of embodiment of the utility model to exchange electrically driven (operated) led lamp.
The primary clustering symbol description
1 led lamp
11 first decide current device
111 first constant-current circuits
112 first protective circuits
12 second decide current device
121 second constant-current circuits
122 second protective circuits
13 first LED load
131 first light-emitting diodes
132 second light-emitting diodes
13a, 13b, 13c light-emitting diode
14 second LED load
15 power supply contacts
16 connectors
17 surge absorbers
First link of AC1 alternating current
Second link of AC2 alternating current
The C control circuit
D utmost point pipe
The electric current of first half period of I1
The electric current of second half period of I2
The M metal oxide semiconductcor field effect transistor
Embodiment
Please refer to Fig. 1 a, an embodiment of the utility model comprises that to exchange electrically driven (operated) led lamp 1 at least one first decides current device 11, at least one second decides current device 12 and at least one first LED load 13, and it is serially connected with first and decides current device 11 and second and decide between the current device 12.This first end of deciding current device 11 is connected with the first link AC1 of alternating current, puts on the maximum of the electric current of first LED load 13 in order to first half period (for example positive half period) that is limited in alternating current.Second end of deciding current device 12 is connected with the second link AC2 of alternating current.In like manner, second decides current device 12 puts on the electric current of first LED load 13 in order to second half period (for example negative half-cycle) that is limited in alternating current maximum.
First decides current device 11 comprises first constant-current circuit 111 and first protective circuit 112 that is connected in parallel with this first constant-current circuit 111.This first constant-current circuit 111 allows the electric current I 1 of first half period of alternating current to pass through, and the first protective circuit 112 then electric current I 2 of second half period of permission alternating current is passed through.Second decides current device 12 comprises second constant-current circuit 121 and first protective circuit 122 that is connected in parallel with this second constant-current circuit 121.Second constant-current circuit 121 allows the electric current I 2 of second half period of alternating current to pass through, and the second protective circuit 122 then electric current I 1 of first half period of permission alternating current is passed through.
For example, first protective circuit 112 can be a diode.When the first link AC1 of alternating current was in positive polarity, the voltage of node VA1 was greater than the voltage of node VB1, that is first protective circuit 112 is in reverse bias, and it can be considered and opens circuit; And the voltage of node VA2 is less than the voltage of node VB2, that is second protective circuit 122 is in forward bias voltage drop, and electric current can pass through in a large number.And the maximum of first constant-current circuit, 111 restricted passage electric currents, therefore, can be controlled by the electric current in whole loop, first LED load 13 thereby be protected.On the contrary, when the first link AC1 of alternating current was in negative polarity, the voltage of node VA1 was less than the voltage of node VB1, that is first protective circuit 112 is in forward bias voltage drop; And the voltage of node VA2 is greater than the voltage of node VB2, that is second protective circuit 122 is in reverse bias.Because the metering function of second constant-current circuit 121 still can be controlled by the electric current in whole loop, first LED load 13 thereby be protected.
Please refer to Fig. 1 b, in one embodiment, constant-current circuit can comprise metal oxide semiconductcor field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) M and control circuit C.Control circuit C can control metal oxide semiconductcor field effect transistor M conducting or disconnection.The parasitic diode D of metal oxide semiconductcor field effect transistor M is connected in parallel in source electrode and the drain electrode of metal oxide semiconductcor field effect transistor M, and parasitic diode D can be used as protective circuit.According to this structure, when the voltage of node VA during greater than the voltage of node VB, control circuit C control metal oxide semiconductcor field effect transistor M conducting, and diode D is in reverse bias, so electric current flows to node VB via metal oxide semiconductcor field effect transistor M.Because the component characteristic of metal oxide semiconductcor field effect transistor M, the maximum by electric current can be restricted.Be noted that; also can (Bipolar Junction Transistor BJT) waits assembly to be realized with plug-in diode, static discharge protection component, metal oxide semiconductcor field effect transistor or bipolar junction transistor as the diode D of protective circuit.
It should be noted that first decides current device 11 and second and decide the integrated circuit that current device 12 can be two individual packages.But be not limited thereto, first decides current device 11 and second, and to decide current device 12 also can be the single packaging body that comprises two stand-alone integrated circuit.For example, decide the electric current chip packing-body and comprise that first bearing, first is decided electric current crystal grain, second bearing, second is decided electric current crystal grain and packaging body.This first bearing and second bearing have independently electrical.First decides electric current crystal grain comprises first constant-current circuit and first protective circuit.Second decides electric current crystal grain comprises second constant-current circuit and second protective circuit.First decides electric current crystal grain and second decides electric current crystal grain and is provided with and is electrically connected on first bearing and second bearing respectively.Packaging body then coats first to be decided electric current crystal grain and second and decides electric current crystal grain.In one embodiment, first bearing and/or second bearing are lead frame or substrate.
In one embodiment, can be realized first LED load 13 in many ways.For example, first LED load 13 comprise first light-emitting diode 131 and with second light-emitting diode 132 of first light-emitting diode, 131 reverse parallel connections, shown in Fig. 2 a.When the voltage of node VB1 during greater than the voltage of node VB2, first light-emitting diode 131 is in forward bias voltage drop, second light-emitting diode 132 is in reverse bias, so electric current flows to node VB2 via first light-emitting diode 131, makes the light-emitting diode 131 of winning luminous.Otherwise, when the voltage of node VB 1 during less than the voltage of node VB2, first light-emitting diode 131 is in reverse bias, and second light-emitting diode 132 is in forward bias voltage drop, therefore electric current flows to node VB 1 via second light-emitting diode 132, makes that second light-emitting diode 132 is luminous.
With the serial connection of the light-emitting diode (LED) module shown in Fig. 2 a, can obtain the light-emitting diode (LED) module shown in Fig. 2 b.In like manner, when the voltage of node VB1 during greater than the voltage of node VB2, first light-emitting diode 131 is in forward bias voltage drop and is luminous.When the voltage of node VB 1 during less than the voltage of node VB2, second light-emitting diode 132 is in forward bias voltage drop and is luminous.
Please refer to Fig. 2 c, in one embodiment, first LED load 13 comprises first light-emitting diode 131 and a plurality of second light-emitting diode 132 of serial connection each other of a plurality of serial connections each other.First light-emitting diode 131 and second light-emitting diode, 132 reverse parallel connections that are connected in series of serial connection.When the voltage of node VB1 during greater than the voltage of node VB2, first light-emitting diode 131 is in forward bias voltage drop and is luminous.When the voltage of node VB1 during less than the voltage of node VB2, second light-emitting diode 132 is in forward bias voltage drop and is luminous.
Please refer to Fig. 2 d, in one embodiment, first LED load 13 comprises light-emitting diode 13a, 13b, the 13c that a plurality of bridge-types connect.When the voltage of node VB1 during greater than the voltage of node VB2, light-emitting diode 13a and 13c are in forward bias voltage drop and are luminous.When the voltage of node VB1 during less than the voltage of node VB2, light-emitting diode 13b and 13c are in forward bias voltage drop and are luminous.It should be noted that light-emitting diode 13c is not limited to one, and can be a plurality of.
Please refer to Fig. 3 a, in one embodiment, led lamp of the present utility model can comprise that first of a plurality of serial connections decide second of current device 11 and/or a plurality of serial connections and decide current device 12.Be connected in series a plurality of proof voltage abilities that current device can increase led lamp of the present utility model of deciding.Please refer to Fig. 3 b, in one embodiment, led lamp of the present utility model can comprise a plurality of be connected in parallel first decide current device 11 and/or a plurality of be connected in parallel second decide current device 12.A plurality of sizes that current device can increase electric current of deciding are connected in parallel.
Please refer to Fig. 4, in one embodiment, led lamp of the present utility model also comprises at least one second LED load 14, it can be serially connected with first decides between the first link AC1 of current device 11 and alternating current, and/or is serially connected with second and decides between the second link AC2 of current device 12 and alternating current.
Please refer to Fig. 5, in one embodiment, a plurality of led lamps of the present utility model can be connected in parallel together, so that the larger area light source to be provided.Please refer to Fig. 6, in another embodiment, led lamp of the present utility model comprises power supply contact 15 and connector 16.Power supply contact 15 is in order to be connected with first link and second link of alternating current.Perhaps power supply contact 15 can be connected with the connector 16 of another led lamp of the present utility model.In an application examples, embodiment shown in Figure 6 can effectively prolong the length of led lamp of the present utility model, to adapt to various decorative uses.The power supply contact that it should be noted that led lamp of the present utility model can be according to the pattern of light fixture and is changed.For example, power supply contact can be plug, spiral joint or stitch joint.
Please refer to Fig. 7, in one embodiment, led lamp of the present utility model can comprise surge absorber 17, the one end is connected in first to be decided between the first link AC1 of current device 11 and alternating current, and the other end is connected in second to be decided between the second link AC2 of current device 12 and alternating current.Surge absorber 17 can be when AC power produces surging or static discharge generation, and the voltage between first link AC1 of strangulation alternating current and the second link AC2 of alternating current skyrockets.
Comprehensively above-mentioned, of the present utility modelly decide the electric current chip packing-body and be to be provided with between first link/second link in AC power and the light-emitting diode to decide current device to exchange electrically driven (operated) led lamp, restriction puts on the maximum of the electric current of light-emitting diode thus.Therefore, led lamp of the present utility model can avoid light-emitting diode to burn because of excessive electric current, and has preferable energy use efficiency.
Above-described embodiment only is for technological thought of the present utility model and characteristics are described, its purpose makes those skilled in the art can understand content of the present utility model and implementing according to this, and can not limit protection range of the present utility model; But all variation or modifications of doing according to the spirit that the utility model disclosed still are interpreted as being encompassed in the claim of the present utility model.
Claims (21)
1. one kind to exchange electrically driven (operated) led lamp, it is characterized in that, comprising:
At least one first decides current device, and the one end is connected with first link of alternating current, and this first is decided current device and comprise:
First constant-current circuit, it allows the electric current of first half period of described alternating current to pass through; And
First protective circuit, it is in parallel with described first constant-current circuit, and allows the electric current of second half period of described alternating current to pass through;
At least one second decides current device, and the one end is connected with second link of described alternating current, and this second is decided current device and comprise:
Second constant-current circuit, it allows the electric current of second half period of described alternating current to pass through; And
Second protective circuit, it is in parallel with described second constant-current circuit, and allows the electric current of first half period of described alternating current to pass through; And
At least one first LED load, it is serially connected with described first and decides current device and described second and decide between the current device.
2. as claimed in claim 1ly it is characterized in that, also comprise to exchange electrically driven (operated) led lamp:
At least one second LED load, it is serially connected with described first and decides between described first link of current device and described alternating current.
3. as claimed in claim 1ly it is characterized in that, also comprise to exchange electrically driven (operated) led lamp:
At least one second LED load, it is serially connected with described second and decides between described second link of current device and described alternating current.
4. as claimed in claim 1ly it is characterized in that described first to decide current device be a plurality of, and described a plurality of first decides current device serial or parallel connection in fact to exchange electrically driven (operated) led lamp.
5. as claimed in claim 1ly it is characterized in that described second to decide current device be a plurality of, and described a plurality of second decides current device serial or parallel connection in fact to exchange electrically driven (operated) led lamp.
6. as claimed in claim 1 to exchange electrically driven (operated) led lamp, it is characterized in that, described first constant-current circuit comprises metal oxide semiconductcor field effect transistor and control circuit, and wherein this control circuit is controlled this metal oxide semiconductcor field effect transistor conducting or disconnection; Described first protective circuit is the parasitic diode of this metal oxide semiconductcor field effect transistor.
7. as claimed in claim 1 to exchange electrically driven (operated) led lamp, it is characterized in that, described second constant-current circuit comprises metal oxide semiconductcor field effect transistor and control circuit, and wherein this control circuit is controlled this metal oxide semiconductcor field effect transistor conducting or disconnection; Described second protective circuit is the parasitic diode of this metal oxide semiconductcor field effect transistor.
8. as claimed in claim 1ly it is characterized in that to exchange electrically driven (operated) led lamp described first protective circuit comprises plug-in diode, static discharge protection component, metal oxide semiconductcor field effect transistor or bipolar junction transistor.
9. as claimed in claim 1ly it is characterized in that to exchange electrically driven (operated) led lamp described second protective circuit comprises plug-in diode, static discharge protection component, metal oxide semiconductcor field effect transistor or bipolar junction transistor.
10. as claimed in claim 1 to exchange electrically driven (operated) led lamp, it is characterized in that, also comprise surge absorber, the one end is connected in described first to be decided between first link of current device and described alternating current, and the other end is connected in described second to be decided between second link of current device and described alternating current.
11. as claimed in claim 1ly it is characterized in that to exchange electrically driven (operated) led lamp described first LED load comprises:
First light-emitting diode; And
Second light-emitting diode, itself and this first light-emitting diode reverse parallel connection.
12. as claimed in claim 1ly it is characterized in that to exchange electrically driven (operated) led lamp that described first LED load comprises a plurality of light-emitting diode (LED) modules of serial connection each other, this light-emitting diode (LED) module comprises:
First light-emitting diode; And
Second light-emitting diode, itself and this first light-emitting diode reverse parallel connection.
13. as claimed in claim 1ly it is characterized in that to exchange electrically driven (operated) led lamp described first LED load comprises:
A plurality of first light-emitting diodes, it is connected in series each other; And
A plurality of second light-emitting diodes, it is connected in series each other, and with the described a plurality of first light-emitting diode reverse parallel connections that are connected in series.
14. as claimed in claim 1ly it is characterized in that described first LED load comprises the light-emitting diode that a plurality of bridge-types connect to exchange electrically driven (operated) led lamp.
15. it is as claimed in claim 1 to exchange electrically driven (operated) led lamp, it is characterized in that, described first decides current device and described second decides the integrated circuit that current device is two individual packages, or comprises the single packaging body of two stand-alone integrated circuit.
16. as claimed in claim 1ly it is characterized in that to exchange electrically driven (operated) led lamp also comprise power supply contact, it is plug, spiral joint or stitch joint.
17. it is as claimed in claim 1 to exchange electrically driven (operated) led lamp, it is characterized in that, also comprise connector and power supply contact, this power supply contact perhaps is connected with another connector that exchanges electrically driven (operated) led lamp in order to be connected with described first link and second link of alternating current.
18. decide the electric current chip packing-body for one kind, it is applied to it is characterized in that to exchange electrically driven (operated) led lamp, comprises:
First bearing;
First decides electric current crystal grain, and it is arranged at this first bearing and electrically connects with this first bearing, and this first is decided electric current crystal grain and comprise:
First constant-current circuit, it allows the electric current of first half period of alternating current to pass through; And
First protective circuit, it is in parallel with described first constant-current circuit, and allows the electric current of second half period of alternating current to pass through;
Second bearing, it has independently electrical with respect to described first bearing;
Second decides electric current crystal grain, and it is arranged at described second bearing and electrically connects with described second bearing, and this second is decided electric current crystal grain and comprise:
Second constant-current circuit, it allows the electric current of second half period of alternating current to pass through; And
Second protective circuit, it is in parallel with described second constant-current circuit, and allows the electric current of first half period of alternating current to pass through; And
Packaging body, it coats described first and decides electric current crystal grain and described second and decide electric current crystal grain.
19. as claimed in claim 18ly decide the electric current chip packing-body, it is characterized in that described first bearing and/or described second bearing are lead frame or substrate.
20. as claimed in claim 18ly decide the electric current chip packing-body, it is characterized in that, described first constant-current circuit and/or this second constant-current circuit comprise metal oxide semiconductcor field effect transistor and control circuit, and wherein this control circuit is controlled this metal oxide semiconductcor field effect transistor conducting or disconnection.
21. as claimed in claim 18ly decide the electric current chip packing-body; it is characterized in that the parasitic diode that described first protective circuit and/or this second protective circuit are described constant-current circuit, plug-in diode, static discharge protection component, metal oxide semiconductcor field effect transistor or bipolar junction transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200012237U CN201657388U (en) | 2010-01-08 | 2010-01-08 | Constant-current chip packaging body and luminous diode lamp driven by alternating current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200012237U CN201657388U (en) | 2010-01-08 | 2010-01-08 | Constant-current chip packaging body and luminous diode lamp driven by alternating current |
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| Publication Number | Publication Date |
|---|---|
| CN201657388U true CN201657388U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200012237U Expired - Fee Related CN201657388U (en) | 2010-01-08 | 2010-01-08 | Constant-current chip packaging body and luminous diode lamp driven by alternating current |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102548116A (en) * | 2010-12-16 | 2012-07-04 | 陈盈佳 | Constant current device, chip packaging piece and lamp thereof |
| CN103108466A (en) * | 2013-01-30 | 2013-05-15 | 天目照明有限公司 | Alternating current drive light emitting diode circuit |
| US9538594B2 (en) | 2012-10-11 | 2017-01-03 | Lextar Electronics Corporation | Lamp |
-
2010
- 2010-01-08 CN CN2010200012237U patent/CN201657388U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102548116A (en) * | 2010-12-16 | 2012-07-04 | 陈盈佳 | Constant current device, chip packaging piece and lamp thereof |
| US9538594B2 (en) | 2012-10-11 | 2017-01-03 | Lextar Electronics Corporation | Lamp |
| CN103108466A (en) * | 2013-01-30 | 2013-05-15 | 天目照明有限公司 | Alternating current drive light emitting diode circuit |
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| 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: 20101124 Termination date: 20150108 |
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| EXPY | Termination of patent right or utility model |