CN205385630U - Replacement type LED lamp with current -limiting protect function - Google Patents
Replacement type LED lamp with current -limiting protect function Download PDFInfo
- Publication number
- CN205385630U CN205385630U CN201620047978.8U CN201620047978U CN205385630U CN 205385630 U CN205385630 U CN 205385630U CN 201620047978 U CN201620047978 U CN 201620047978U CN 205385630 U CN205385630 U CN 205385630U
- Authority
- CN
- China
- Prior art keywords
- type led
- resistance
- fluorescent tube
- molecular polymer
- positive coefficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model provides a replacement type LED lamp with current -limiting protect function, including a fluorescence lamp inductive ballast, the positive coefficient temperature resistive of a high -molecular polymer and a replacement type LED fluorescent tube, fluorescence lamp inductive ballast, the positive coefficient temperature resistive of high -molecular polymer and replacement type LED fluorescent tube connect gradually to form the galvanic circle with external power source, when the short circuit of replacement type LED fluorescent tube, the increase of the positive coefficient temperature resistive resistance of high -molecular polymer, at the normal during operation of replacement type LED fluorescent tube, the positive coefficient temperature resistive of high -molecular polymer resumes original resistance to realize the overcurrent protection of replacement type LED fluorescent tube. The utility model has the advantages of, when the short circuit appeared in the LED fluorescent tube, the PPTC resistance sharply rose, and the LED driver no longer bears the heavy current, realizes the protection, and the normal during operation of LED fluorescent tube, PPTC revert to the low impedance state again, can not exert an influence to the normal work of LED fluorescent tube.
Description
Technical field
This utility model relates to current-limiting protection field, particularly relates to a kind of replaced type LED with current-limiting protection function.
Background technology
LED illumination, due to the more efficient electro-optical efficiency of its relatively conventional light source, is substituting rapidly conventional light source, and inductance type ballast, as traditional lighting mode, was widely used before LED illumination occurs.If replace the inductance type ballast light fixture that user installed originally completely by LED illumination lamp, alternative costs are high and need original illuminating line is transformed.And replaced type LED lamp tube is owing to without changing the original illuminating line device of user, becoming most economical alternative forms, and it is commonly used.
Current widespread practice is directly to displace original fluorescent tube with replaced type LED lamp tube, renewable fuse replaces original starter, thus make power supply can pass through Inductive ballast, electric fuse arrives LED driver, provides power supply input for LED driver.Installation insurance silk in order that disconnect input power in time when short circuit occurs in LED lamp tube, thus realizing protection to light fixture, it is to avoid cause potential safety hazard.Electric current owing to flowing through electric fuse sufficiently large just must can blow and realize open circuit protection; and Inductive ballast in the loop of connecting now has current-limiting function; making the electric current in loop be limited in a certain particular range all the time, such as T8 Inductive ballast will limit current at about 380mA.If the specification of electric fuse is more than 380mA, then electric fuse would not be blown.The big electric current that LED driver will be inputted for a long time burns, and serious results even in driver catching fire.On the contrary, if the specification choosing of electric fuse is too small, the current needs of LED driver will be met, blow too early.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of replaced type LED with current-limiting protection function, and it can when short circuit occurs in LED lamp tube, and resistance sharply raises so that LED driver is not subjected to big electric current, it is achieved protection.And when LED lamp tube normal operation, revert to again low resistance state, LED lamp tube normal operation will not be produced impact.
In order to solve the problems referred to above, this utility model provides a kind of replaced type LED with current-limiting protection function, including an inductive ballast of fluorescent lamp, one high molecular polymer positive coefficient temperature and resistance and a replaced type LED lamp tube, described inductive ballast of fluorescent lamp, high molecular polymer positive coefficient temperature and resistance and replaced type LED lamp tube are sequentially connected with, and form galvanic circle with external power source, when replaced type LED lamp tube short circuit, described high molecular polymer positive coefficient temperature and resistance resistance increases, when replaced type LED lamp tube normal operation, described high molecular polymer positive coefficient temperature and resistance recovers original resistance, to realize the overcurrent protection of replaced type LED lamp tube.
Further, described inductive ballast of fluorescent lamp is T8 inductive ballast of fluorescent lamp.
Further, described replaced type LED lamp tube includes LED drive power and LED module, and described LED drive power is used for driving described LED module.
Further, described inductive ballast of fluorescent lamp, high molecular polymer positive coefficient temperature and resistance, LED drive power, LED module are sequentially connected with, and form galvanic circle with external power source.
The utility model has the advantage of, this utility model has the replaced type LED of current-limiting protection function and adopts high molecular polymer positive coefficient temperature and resistance (PPTC) device to instead of the electric fuse commonly used at present.PPTC characteristic is to present low resistance in normal current situation, between approximate number m Ω to number Ω.Under overcurrent fault, resistance sharply raises, thus protecting back-end circuit.Due to have excellence can recovery characteristics, during for overcurrent protection, after Failure elimination, circuit can automatically restore to conducting state.So, when short circuit occurs in LED lamp tube, PPTC resistance sharply raises so that LED driver is not subjected to big electric current, it is achieved protection.And when LED lamp tube normal operation, PPTC reverts to again low impedance state, LED lamp tube normal operation will not be produced impact.
Accompanying drawing explanation
Fig. 1 is the structural representation that this utility model has the replaced type LED of current-limiting protection function.
Detailed description of the invention
The detailed description of the invention of the replaced type LED with current-limiting protection function this utility model provided below in conjunction with accompanying drawing elaborates.
Referring to Fig. 1, this utility model has the replaced type LED of current-limiting protection function and includes inductive ballast of fluorescent lamp 1, high molecular polymer positive coefficient temperature and resistance 2 and a replaced type LED lamp tube 3.
Described inductive ballast of fluorescent lamp 1, high molecular polymer positive coefficient temperature and resistance 2 and replaced type LED lamp tube 3 are sequentially connected with, and form galvanic circle with external power source (not indicating in accompanying drawing).One end of described inductive ballast of fluorescent lamp 1 and one end of replaced type LED lamp tube 3 are respectively connecting to described external power source.
Further, in this embodiment, described inductive ballast of fluorescent lamp 1 is T8 inductive ballast of fluorescent lamp.This utility model is not limited to this, and those skilled in the art can choose described inductive ballast of fluorescent lamp 1 from prior art.
Further, described replaced type LED lamp tube 3 includes LED drive power 31 and LED module 32, and described LED drive power 31 is used for driving described LED module 32.Described inductive ballast of fluorescent lamp 1, high molecular polymer positive coefficient temperature and resistance 2, LED drive power 31, LED module 32 are sequentially connected with, and form galvanic circle with external power source.One end of described inductive ballast of fluorescent lamp 1 and one end of LED drive power 31 are respectively connecting to described external power source.
When replaced type LED lamp tube 3 short circuit; described high molecular polymer positive coefficient temperature and resistance 2 resistance increases; when replaced type LED lamp tube 3 normal operation, described high molecular polymer positive coefficient temperature and resistance 2 recovers original resistance, to realize the overcurrent protection of replaced type LED lamp tube 3.
The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (4)
1. a replaced type LED with current-limiting protection function, it is characterized in that, including an inductive ballast of fluorescent lamp, one high molecular polymer positive coefficient temperature and resistance and a replaced type LED lamp tube, described inductive ballast of fluorescent lamp, high molecular polymer positive coefficient temperature and resistance and replaced type LED lamp tube are sequentially connected with, and form galvanic circle with external power source, when replaced type LED lamp tube short circuit, described high molecular polymer positive coefficient temperature and resistance resistance increases, when replaced type LED lamp tube normal operation, described high molecular polymer positive coefficient temperature and resistance recovers original resistance, to realize the overcurrent protection of replaced type LED lamp tube.
2. the replaced type LED with current-limiting protection function according to claim 1, it is characterised in that described inductive ballast of fluorescent lamp is T8 inductive ballast of fluorescent lamp.
3. the replaced type LED with current-limiting protection function according to claim 1, it is characterised in that described replaced type LED lamp tube includes LED drive power and LED module, described LED drive power is used for driving described LED module.
4. the replaced type LED with current-limiting protection function according to claim 3; it is characterized in that; described inductive ballast of fluorescent lamp, high molecular polymer positive coefficient temperature and resistance, LED drive power, LED module are sequentially connected with, and form galvanic circle with external power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620047978.8U CN205385630U (en) | 2016-01-19 | 2016-01-19 | Replacement type LED lamp with current -limiting protect function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620047978.8U CN205385630U (en) | 2016-01-19 | 2016-01-19 | Replacement type LED lamp with current -limiting protect function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205385630U true CN205385630U (en) | 2016-07-13 |
Family
ID=56347809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620047978.8U Expired - Fee Related CN205385630U (en) | 2016-01-19 | 2016-01-19 | Replacement type LED lamp with current -limiting protect function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205385630U (en) |
-
2016
- 2016-01-19 CN CN201620047978.8U patent/CN205385630U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20220119 |