CN204104188U - A kind of LED lamp - Google Patents
A kind of LED lamp Download PDFInfo
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- CN204104188U CN204104188U CN201420520592.5U CN201420520592U CN204104188U CN 204104188 U CN204104188 U CN 204104188U CN 201420520592 U CN201420520592 U CN 201420520592U CN 204104188 U CN204104188 U CN 204104188U
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- led lamp
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- current detection
- resistance
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- 238000001514 detection method Methods 0.000 claims abstract description 34
- 239000004065 semiconductor Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
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Abstract
A kind of LED lamp comprises at least one group of LED lamp module, a current detection module, and a control module.Each group in described at least one group of LED lamp module comprises the LED of a resistance and at least one and this resistant series.Described current detection module is for detecting the electric current of the resistance in one group of LED lamp module being electrically connected with current detection module.Described control module remains unchanged for the current value of the resistance making described current detection module and detect.Because described ohmically size remains unchanged, thus make the voltage at the two ends being carried in one group of LED lamp module also constant, and each group LED lamp module is for being arranged in parallel, thus makes the voltage being carried in each group LED lamp module two ends also constant.Therefore in this LED lamp, only current detection module and control module described in one group of LED lamp module installation, and described current detection module and control module can not be set in remaining LED lamp module, thus reach the object reduced costs.
Description
Technical field
The utility model relates to a kind of lighting system devices, particularly a kind of LED lamp.
Background technology
In general daily life, all can see various lighting apparatus everywhere, such as, fluorescent lamp, street lamp, desk lamp, artistic lamp etc.In above-mentioned lighting apparatus, major part is as illuminating source with osram lamp traditionally.In recent years, because science and technology is maked rapid progress, utilized light-emitting diode (LED) as light sources.Notably, except lighting apparatus, for general traffic sign, billboard, car light etc., also all change into and use light-emitting diode as illuminating source.As previously mentioned, use light-emitting diode as illuminating source, its benefit is power saving, and brightness is larger, therefore generalization gradually in use.
Universal along with LED lamp, increasing occasion brings into use LED lamp, as market, hotel, at home.Particularly in market and hotel, because illumination occasion mostly is strip, therefore need a large amount of strip lamps, and these strip lamps are in order to easy for installation, mostly adopt mutual contact mode, namely form by the grafting of multiple light fixture group is interconnected.Although the constant voltage light fixture of existing resistant series diode design is a lot, general efficiency is all very low.Simultaneously compared with adopting the light fixture of DC/DC converter scheme, the light fixture of this employing DC/DC transducer has the improved efficiency of 20%.But the strip lamp of general employing DC/DC transducer, the light fixture of various length specification all can with a DC/DC transducer.And the price of DC/DC transducer is more expensive, the therefore light fixture of this mutual contact mode, has higher cost.
Utility model content
In view of this, be necessary to provide a kind of LED lamp that can reduce interconnected light fixture cost, to overcome above-mentioned deficiency.
LED lamp comprises an at least one group of LED lamp module in parallel each other, one with one group of current detection module be electrically connected in described at least one group of LED lamp module, an and control module be electrically connected with described current detection module.Each group in described at least one group of LED lamp module comprises the LED of a resistance and at least one and this resistant series.Described current detection module is for detecting the electric current of the resistance in one group of LED lamp module being electrically connected with current detection module.Described control module remains unchanged for the current value of the resistance making described current detection module and detect.
Compared with prior art, detect the current value of a resistance of described one group of LED lamp module due to described current detection module, and control module to keep flow through this ohmically current value size according to the size of this current value constant.Because described ohmically size remains unchanged, when the number of the LED of one group of LED lamp module is constant, total resistance is also constant, thus make the voltage at the two ends being carried in one group of LED lamp module also constant, and each group LED lamp module is for being arranged in parallel, thus make the voltage being carried in each group LED lamp module two ends also constant.Therefore in this LED lamp, only current detection module and control module described in one group of LED lamp module installation, and described current detection module and control module can not be set in remaining LED lamp module, thus reach the object reduced costs.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described, wherein.
The circuit theory diagrams of a kind of LED lamp that Fig. 1 provides for the utility model.
Fig. 2 is the circuit diagram of the LED lamp of Fig. 1.
Embodiment
Based on accompanying drawing, specific embodiment of the utility model is further elaborated below.Should be appreciated that specific embodiment described herein is only as embodiment, and be not used in restriction protection range of the present utility model.
Refer to Fig. 1 and Fig. 2, the circuit theory diagrams of the LED lamp 100 of its embodiment provided for the utility model.Described LED lamp 100 comprises at least one group of LED lamp module 10 in parallel each other, one with one group of current detection module be electrically connected 11 in described at least one group of LED lamp module 10, an and control module 12 be electrically connected with described current detection module 11.It is understood, however, that described LED lamp 100 also comprises for it provides the power supply of electric power, switch, the technology known by those skilled in the art such as plug, socket.
Described LED lamp module 10 comprises at least one group.In the present embodiment, described LED lamp 100 comprises many group LED lamp modules 10.The structure of each group LED lamp module 10, composition and connected mode are all identical, namely all comprise a resistance 101 and at least one LED 102 of connecting with this resistance 101.Just in each group LED lamp module 10, the parameter of described resistance 101 and LED 102 can identical also must be identical.In the present embodiment, in order to obtain making the brightness of described many group LED lamp modules 10 all identical, the resistance of described resistance 101 is equal, and each LED 102 in this many groups LED lamp module has identical pressure drop gear.Need the pressure drop gear explaining LED further here.Because the precision reason of the production technology of LED, the parameter of each LED lamp has fine distinction, even the product of the production of same production line, thus make when the electric current flowing through LED is equal, the voltage be carried in each LED lamp will be different.Therefore there is the LED of identical voltage range, be namely referred to as the LED with same pressure drop gear, as the LED etc. of 2.6V ~ 2.7V gear.As shown in Figure 2, each LED 102 all replaces diagram with a diode.It is envisioned that each group or several groups of LED lamp modules 10 can become an independently light fixture, independently light fixture can be interconnected by inserting mode for these.In the present embodiment, each independently light fixture comprise two groups of LED lamp modules 10.
Described current detection module 11 is performed by a DC/DC transducer with control module 12.Described current detection module 11 is for detecting the electric current of the resistance 101 in one group of LED lamp module 10 being electrically connected with current detection module 11.Described control module 12 remains unchanged for the current value making to flow through the resistance detected described in described current detection module 11.Above-mentioned function and purposes have all been come by described DC/DC transducer.Described DC/DC transducer is components and parts known described in those skilled in the art, does not describe in detail at this to its structure and working principle.As everyone knows, DC/DC transducer comprises multiple pin, as IN pin, and RS pin, and SW pin etc.Described IN pin and RS pin are electrically connected at the two ends of the resistance 101 in the one group of LED lamp module 10 be electrically connected with described current detection module 11 respectively, to detect the current value flowing through this resistance 101.The effect of described control module 12 is just that the current value of the resistance 101 keeping this to detect is constant.Specifically, in the present embodiment, described control module 12 comprises the metal-oxide-semiconductor (not shown) that is arranged on described DC/DC converter inside.There is in described DC/DC transducer the technology of metal-oxide-semiconductor known by those skilled in the art.The current value of the resistance 101 of described control module 12 namely in the one group of LED lamp module 10 be electrically connected with this current detection module 11 that detects according to described current detection module 11 of DC/DC transducer regulates the switching frequency of this metal-oxide-semiconductor to remain unchanged to make the electric current flowing through this resistance 101.
Described LED lamp 100 also comprises a diode D0 be electrically connected between the IN pin of described DC/DC transducer and SW pin.The positive pole of described diode D0 and the SW pin of DC/DC transducer are electrically connected, and negative pole and IN pin are electrically connected.The effect of this diode is when above-mentioned metal-oxide-semiconductor turns off time, following inductance L electric discharge, thus makes this diode, inductance L and described LED lamp module 10 form a loop, provides electric power to make described inductance L for described LED lamp module 10.
Described LED lamp 100 also comprises an inductance L, between the negative pole that this inductance L is electrically connected at described LED lamp module 10 and the SW pin of DC/DC transducer.The effect of described inductance L is when above-mentioned metal-oxide-semiconductor conducting time, and described power supply, DC/DC transducer and LED lamp module 10 form loop, and LED lamp module 10 is started working and luminescence, and this inductance L starts charging simultaneously.And when metal-oxide-semiconductor turns off, as mentioned above, this inductance L is discharged for described LED lamp module 10 provides electric power.
Compared with prior art, detect the current value of a resistance 101 of described one group of LED lamp module 10 due to described current detection module 11, and the current value size that control module 12 keeps flow through on this resistance 101 according to the size of this current value is constant.Namely in the present embodiment, the IN pin of described DC/DC transducer and RS pin detect the current value on resistance 101, and DC/DC transducer makes the size of this current value remain unchanged according to the switching frequency of the inner metal-oxide-semiconductor of the size adjustment of current value.Because the size on described resistance 101 remains unchanged, when the number of the LED 102 of one group of LED lamp module 10 is constant, total resistance is also constant, thus make the voltage at the two ends being carried in one group of LED lamp module 10 also constant, and each group LED lamp module 10 is for being arranged in parallel, thus make the voltage being carried in each group LED lamp module 10 two ends also constant.Therefore, in this LED lamp 100, only described current detection module 11 and control module 12 are set one group of LED lamp module 10, i.e. DC/DC transducer and diode D0, inductance L.And described DC/DC transducer and diode D0, inductance L can not be set in remaining LED lamp module 10, thus reach the object reduced costs.In addition, if when the pressure drop gear of the resistance of the resistance 101 of each group LED lamp and each LED lamp 102 is all the same, the brightness of described many group LED lamp modules 10 will be consistent.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do in spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (8)
1. a LED lamp, it is characterized in that: described LED lamp comprises at least one group of LED lamp module in parallel each other, one with one group of current detection module be electrically connected in described at least one group of LED lamp module, and a control module be electrically connected with described current detection module, each group in described at least one group of LED lamp module comprises the LED of a resistance and at least one and this resistant series, described current detection module is for detecting the electric current of the resistance in one group of LED lamp module being electrically connected with current detection module, described control module remains unchanged for the current value of the resistance making described current detection module and detect.
2. LED lamp as claimed in claim 1, is characterized in that: described current detection module and control module are performed by a DC/DC transducer.
3. LED lamp as claimed in claim 2, it is characterized in that: described DC/DC transducer comprises an IN pin and a RS pin, described IN pin and RS pin are electrically connected at resistance in the one group of LED lamp module be electrically connected with described current detection module respectively to detect the current value of this resistance.
4. LED lamp as claimed in claim 3, it is characterized in that: described DC/DC transducer comprises a SW pin, described LED lamp also comprises a diode be electrically connected between described IN pin and SW pin.
5. LED lamp as claimed in claim 4, is characterized in that: the positive pole of described diode and the SW pin of DC/DC transducer are electrically connected, and negative pole and IN pin are electrically connected.
6. LED lamp as claimed in claim 4, is characterized in that: described LED lamp also comprises an inductance, between the negative pole that described inductance is electrically connected at described LED lamp module and SW pin.
7. LED lamp as claimed in claim 2, it is characterized in that: described control module comprises the metal-oxide-semiconductor that is arranged on described DC/DC converter inside, the current value of the resistance in the one group of LED lamp module be electrically connected with current detection module that described control module detects according to described current detection module regulates the switching frequency of described metal-oxide-semiconductor to remain unchanged to make the electric current flowing through this resistance.
8. LED lamp as claimed in claim 1, it is characterized in that: described LED lamp comprises many group LED lamp modules, the resistance of the resistance in this many groups LED lamp module is equal, and each LED in this many groups LED lamp module has identical pressure drop gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520592.5U CN204104188U (en) | 2014-09-12 | 2014-09-12 | A kind of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520592.5U CN204104188U (en) | 2014-09-12 | 2014-09-12 | A kind of LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204104188U true CN204104188U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420520592.5U Expired - Lifetime CN204104188U (en) | 2014-09-12 | 2014-09-12 | A kind of LED lamp |
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| Country | Link |
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| CN (1) | CN204104188U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407586A (en) * | 2014-09-12 | 2016-03-16 | 宁波高新区赛尔富电子有限公司 | LED lamp |
-
2014
- 2014-09-12 CN CN201420520592.5U patent/CN204104188U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407586A (en) * | 2014-09-12 | 2016-03-16 | 宁波高新区赛尔富电子有限公司 | LED lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: The national high tech Zone Juxian 315103 Ningbo Road, Zhejiang province No. 1345 Patentee after: Self Electronics Co.,Ltd. Address before: The national high tech Zone Juxian 315103 Ningbo Road, Zhejiang province No. 1345 Patentee before: SELF ELECTRONICS CO.,LTD. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20150114 |
|
| CX01 | Expiry of patent term |