CN203851312U - LED lamp tube - Google Patents
LED lamp tube Download PDFInfo
- Publication number
- CN203851312U CN203851312U CN201320814838.5U CN201320814838U CN203851312U CN 203851312 U CN203851312 U CN 203851312U CN 201320814838 U CN201320814838 U CN 201320814838U CN 203851312 U CN203851312 U CN 203851312U
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- circuit
- current
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- voltage
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Abstract
The utility model discloses an LED lamp tube which is characterized in that the lamp tube comprises a compatible circuit, an EMI circuit, a valley-fill circuit, a constant-current and constant-voltage control circuit, an output circuit, and an LED lamp circuit; a ballast outputs a 135V alternating-current voltage to the compatible circuit of the lamp tube, and a direct-current voltage is outputted to the EMI circuit after internal alternating-current direct-current conversion, wherein the EMI circuit is used for filtering a ripple current in a power grid; after filtering, the direct current is connected to the valley-fill circuit which is used for improving the power factor of the whole circuit and generating no secondary pollution to the circuit of the power grid. The beneficial effects of the utility model are that the lamp tube can be used for directly replacing a fluorescent tube of a T8 type with no increase on installation cost; the energy consumption of the LED is just one fourth of a fluorescent lamp; the installation is simplified; and the execution cost is reduced.
Description
Technical field
The utility model relates to LED lighting field, is specifically related to a kind of LED fluorescent tube.
Background technology
Global energy shortage and environmental pollution show particularly outstandingly in the China of rapid economic development, and energy-conservation and environmental protection is that China realizes Sustainable Socioeconomic Development institute urgent problem.Annual illumination power consumption accounts for 12%～15% of whole power consumptions, as the rich and influential family of energy resource consumption, must find as early as possible the energy-conserving and environment-protective light source of new generation that can substitute conventional light source.LED compares to the unexistent advantage of traditional lighting light source with it, such as lower power demand, preferably drive characteristic, response speed, higher shock resistance, longer useful life, environmental protection and the luminous efficiency constantly improving fast etc. faster, become the light source of new generation that most possibly substitutes in the world at present conventional light source.Although semiconductor lighting cause is just at the early-stage, illuminating LED also has a lot of problems to solve,, along with the swift and violent breakthrough of compound semiconductor technology and improving constantly of encapsulation technology, LED starts to form and progressively expand in the application of lighting field.The luminous efficiency of present stage LED is on the low side and luminous flux high expensive be restriction its enter on a large scale two large bottlenecks of lighting field.The application of LED mainly concentrates on signal designation, intelligent display, automobile lamp, Landscape Lighting and special lighting etc. at present.
At present, the LED fluorescent tube overwhelming majority on market is to be compatible with ballast, adopts ac input voltage to power more, need to original circuit be relocated and could be applied.
Utility model content
In order to address the deficiencies of the prior art, the utility model provides a kind of LED fluorescent tube, adopts exclusive compatible circuit, can compatible electronic ballast, and Inductive ballast, instantaneous take-off formula ballast, without any circuit reconfiguration, has saved cost in application process greatly.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of LED fluorescent tube, it is characterized in that: comprise compatible circuit, EMI circuit, current follow-up circuit, constant-current and constant-voltage control circuit, output circuit and LED circuit for lamp, ballast output 135V alternating voltage is connected to the compatible circuit of LED fluorescent tube, after inner alternating current-direct current rectifying conversion, output dc voltage is connected to EMI circuit, the effect of EMI circuit is to filter ripple current in electrical network, after crossing ripple, be connected to current follow-up circuit, effect by stream electric current is that the power factor value that promotes whole circuit makes not form to the secondary pollution of electrical network circuit, after promoting filtration, current follow-up circuit obtains clean direct voltage output to constant-current and constant-voltage control circuit, the effect of constant-current and constant-voltage control circuit is electric current and the voltage supply output circuit that guarantees that output is constant, the output circuit high-frequency impulse that filtering is filtered in high frequency voltage again guarantees that LED lamp does not produce stroboscopic phenomenon, output circuit is connected to LED circuit for lamp.
The beneficial effects of the utility model are: can directly substitute T8 type fluorescent tube, not increase any mounting cost; The energy consumption of LED is only 1/4 of fluorescent lamp; Simplify and install, reduce implementation cost.
Accompanying drawing explanation
Fig. 1 is the functional-block diagram of a kind of LED fluorescent tube described in the utility model;
Fig. 2 is the circuit theory diagrams of compatible circuit described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of LED fluorescent tube, it is characterized in that: comprise compatible circuit, EMI circuit, current follow-up circuit, constant-current and constant-voltage control circuit, output circuit and LED circuit for lamp, ballast output 135V alternating voltage is connected to the compatible circuit of LED fluorescent tube, after inner alternating current-direct current rectifying conversion, output dc voltage is connected to EMI circuit, the effect of EMI circuit is to filter ripple current in electrical network, after crossing ripple, be connected to current follow-up circuit, effect by stream electric current is that the power factor value that promotes whole circuit makes not form to the secondary pollution of electrical network circuit, after promoting filtration, current follow-up circuit obtains clean direct voltage output to constant-current and constant-voltage control circuit, the effect of constant-current and constant-voltage control circuit is electric current and the voltage supply output circuit that guarantees that output is constant, the output circuit high-frequency impulse that filtering is filtered in high frequency voltage again guarantees that LED lamp does not produce stroboscopic phenomenon, output circuit is connected to LED circuit for lamp.
As shown in Figure 2, AC1 port is connected to F3 fuse, and F3 fuse is connected to MOV2 piezo-resistance, and F3 fuse is connected to D15 diode negative terminal and D9 diode anode; D15 diode anode is connected to D12 diode anode, and D9 diode negative terminal is connected to D2 diode negative terminal.
AC2 port is connected to F2 fuse, and F2 fuse is connected to MOV2 piezo-resistance, and F2 fuse is connected to D12 diode negative terminal and D2 diode anode; D15 and D12 diode anode are connected to D18 and D19 diode anode, and D9 and D2 diode negative terminal are connected to D16 and D7 diode negative terminal.
AC3 port is connected to F1 fuse, and F1 fuse is connected to MOV1 piezo-resistance, and F1 fuse is connected to D18 diode negative terminal and D16 diode anode; D18 diode anode is connected to D19 diode anode.
AC4 port is connected to MOV1 piezo-resistance, and AC4 port is connected to D19 diode negative terminal and D7 diode anode; D7 diode negative terminal is connected to D16 diode negative terminal.
Four negative pole ends of D2 diode, D7 diode, D9 diode, D16 diode connect together; Four positive terminals of D12 diode, D18 diode, D15 diode, D19 diode connect together.
Be more than to description of the present utility model and non-limiting, other embodiment based on the utility model thought, also all among protection range of the present utility model.
Claims (1)
1. a LED fluorescent tube, it is characterized in that: comprise compatible circuit, EMI circuit, current follow-up circuit, constant-current and constant-voltage control circuit, output circuit and LED circuit for lamp, ballast output 135V alternating voltage is connected to the compatible circuit of LED fluorescent tube, after inner alternating current-direct current rectifying conversion, output dc voltage is connected to EMI circuit, the effect of EMI circuit is to filter ripple current in electrical network, after crossing ripple, be connected to current follow-up circuit, effect by stream electric current is that the power factor value that promotes whole circuit makes not form to the secondary pollution of electrical network circuit, after promoting filtration, current follow-up circuit obtains clean direct voltage output to constant-current and constant-voltage control circuit, the effect of constant-current and constant-voltage control circuit is electric current and the voltage supply output circuit that guarantees that output is constant, the output circuit high-frequency impulse that filtering is filtered in high frequency voltage again guarantees that LED lamp does not produce stroboscopic phenomenon, output circuit is connected to LED circuit for lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814838.5U CN203851312U (en) | 2013-12-12 | 2013-12-12 | LED lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320814838.5U CN203851312U (en) | 2013-12-12 | 2013-12-12 | LED lamp tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203851312U true CN203851312U (en) | 2014-09-24 |
Family
ID=51564277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320814838.5U Expired - Fee Related CN203851312U (en) | 2013-12-12 | 2013-12-12 | LED lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203851312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449823A (en) * | 2017-02-16 | 2018-08-24 | 朗德万斯公司 | For the driving circuit of improved LED lamp tube, LED lamp tube and lighting system |
-
2013
- 2013-12-12 CN CN201320814838.5U patent/CN203851312U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449823A (en) * | 2017-02-16 | 2018-08-24 | 朗德万斯公司 | For the driving circuit of improved LED lamp tube, LED lamp tube and lighting system |
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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 |
Granted publication date: 20140924 Termination date: 20181212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |