CN201281259Y - Flexible LED lamp strip - Google Patents
Flexible LED lamp strip Download PDFInfo
- Publication number
- CN201281259Y CN201281259Y CNU2008202130599U CN200820213059U CN201281259Y CN 201281259 Y CN201281259 Y CN 201281259Y CN U2008202130599 U CNU2008202130599 U CN U2008202130599U CN 200820213059 U CN200820213059 U CN 200820213059U CN 201281259 Y CN201281259 Y CN 201281259Y
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- light
- current circuit
- triode
- constant
- emitting diode
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Abstract
Disclosed is a flexible light-emitting diode light belt, which solves the technical problem that big fall of current of a light-emitting diode at the tail section of the light belt causes the reduction of brightness, and adopts the technical scheme that: the flexible light-emitting diode light belt comprises a group of flexible light strings connected at both ends of a power supply in parallel, the light strings are connected with a power supply positive terminal and a power supply negative terminal in parallel by means of electrical connection, the light strings are connected with a group of light-emitting diodes and an output end and a common terminal of a constant current circuit in series by means of electrical connection, wherein the group of light-emitting diodes is connected into the output end of the constant current circuit in series, and the common terminal of the constant current circuit is connected to the power supply negative terminal. The utility model has the advantages of simple structure, low price, convolution and bendability, good safety, energy saving, long lifetime and rich colors, and is used to replace neon lights and business effect lighting sources with similar purposes, and a triode constant current circuit is used to control the current of the light-emitting diode, so as to achieve the effects of stabilized working current of the light-emitting diode, uniform illumination and wide voltage operation.
Description
Technical field
The utility model relates to a kind of flexible LED light lamp band.
Background technology
Flexible LED light lamp band adds direct current work by the termination, flexible LED light lamp band is by the resistance current limliting in the prior art, because the resistance conductive layer of FPC causes voltage to fall progressively, cause the electric current decline of lamp magnetic tape trailer section light emitting diode very big, cause brightness to descend, have a strong impact on illuminating effect, therefore, for avoiding terminal brightness seriously to descend, the flexible LED light lamp band of prior art can only connect about 5 meters, but its luminance difference dissident reaches more than 30%.
Summary of the invention
For avoiding terminal brightness seriously to descend, the utility model is by using the electric current of simple inexpensive triode constant-current circuit control light emitting diode, reach stabilized illumination diode operation electric current, guarantee luminous even, the effect of wide voltage power supply, the electric current that the has solved lamp magnetic tape trailer section light emitting diode very big problem that descends.
The utility model realizes that the technical scheme that goal of the invention adopts is, a kind of flexible LED light lamp band, constitute by the one group of flexible light string that is connected in parallel on both ends of power, this lamp was ganged up to be electrically connected and was parallel to power positive end and power supply negative terminal, the lamp string is in series by electrical connection by the output and the common port of one a group of light emitting diode and a constant-current circuit, wherein the output of constant-current circuit is gone in this group light emitting diode series connection, the common port of constant-current circuit is connected on power supply negative terminal, this constant-current circuit is by biasing resistor, emitter resistance and triode are formed, wherein an end of biasing resistor is as the control end of constant-current circuit, the other end connects the base stage of triode, emitter resistance one end connects the emitter stage of triode, the other end is as the common port of constant-current circuit, the emitter stage of triode connects the common port of constant-current circuit, the base stage of triode connects the emitter stage of triode, the colelctor electrode of triode connects the base stage of triode, the colelctor electrode of triode is as the output of constant-current circuit, the control end of constant-current circuit is connected with power positive end, and common port is connected with power supply negative terminal.
The beneficial effects of the utility model are simple in structure, cheap, can reel, flexible, safe, energy-conservation, long-life, color are abundant, be used to replace the commercial effect lighting source of neon light and similar applications, use the electric current of triode constant-current circuit control light emitting diode, reach stabilized illumination diode operation electric current, guarantee luminous evenly, the effect of wide voltage power supply.
Below in conjunction with accompanying drawing the utility model is elaborated.
Description of drawings
Accompanying drawing 1 is the utility model circuit diagram.
Accompanying drawing 2 is lamp string described in the utility model road figure.
Accompanying drawing 3 is a constant-current circuit schematic diagram described in the utility model.
In the accompanying drawing, R1 is a biasing resistor, and R2 is an emitter resistance, and T1, T2 are triodes, D1, D2, D3 ... Dn is a light emitting diode, the 1st, and power positive end, the 2nd, power supply negative terminal, the 3rd, control end, the 4th, common port, the 5th, output, the 6th, lamp string, the 7th, constant-current circuit.
The specific embodiment
Referring to accompanying drawing, a kind of flexible LED light lamp band, constitute by the one group of flexible light string that is connected in parallel on both ends of power, this lamp string 6 is parallel to power positive end 1 and power supply negative terminal 2 by electrical connection, lamp string 6 is by one group of light emitting diode D1, D2, D3 ... the output 5 of a Dn and a constant-current circuit 7 and common port 4 are in series by electrical connection, wherein this organizes light emitting diode D1, D2, D3 ... the Dn series connection inserts the output 5 of constant-current circuit 7, and the common port 4 of constant-current circuit 7 is connected on power supply negative terminal 2.
Above-mentioned constant-current circuit 7 is by biasing resistor R1, emitter resistance R2 and triode T1, T2 forms, wherein the end of biasing resistor R1 is as the control end 3 of constant-current circuit 7, the other end connects the base stage of triode T1, emitter resistance R2 one end connects the emitter stage of triode T1, the other end is as the common port 4 of constant-current circuit 7, the emitter stage of triode T2 connects the common port 4 of constant-current circuit 7, the base stage of triode T2 connects the emitter stage of triode T1, the colelctor electrode of triode T2 connects the base stage of triode T1, the colelctor electrode of triode T1 is as the output 5 of constant-current circuit 7, the control end 3 of constant-current circuit 7 is connected with power positive end 1, and common port 4 is connected with power supply negative terminal 2.
The utility model in use, when triode T1 and triode T2 were NPN type triode, more than the high 1.5V of voltage of control end 3 voltage ratio common ports 4, when triode T1 and triode T2 were the positive-negative-positive triode, control end 3 was than more than the common port 4 low 1.5V.
The beneficial effects of the utility model are simple in structure, and cost price is cheap, use the electric current of triode constant-current circuit control light emitting diode, reach stabilized illumination diode operation electric current, guarantees luminous even, the effect of wide voltage power supply.
Claims (2)
1, a kind of flexible LED light lamp band, constitute by the one group of flexible light string that is connected in parallel on both ends of power, it is characterized in that: described lamp string (6) is parallel to power positive end (1) and power supply negative terminal (2) by electrical connection, lamp string (6) is by one group of light emitting diode (D1), (D2), (D3) ... (Dn) and the output (5) of a constant-current circuit (7) and common port (4) be in series by electrical connection, wherein this organizes light emitting diode (D1), (D2), (D3) ... (Dn) series connection inserts the output (5) of constant-current circuit (7), and the common port (4) of constant-current circuit (7) is connected on power supply negative terminal (2).
2, flexible LED light lamp band according to claim 1, it is characterized in that: described constant-current circuit (7) is by biasing resistor (R1), emitter resistance (R2) and triode (T1), (T2) form, wherein an end of biasing resistor (R1) is as the control end (3) of constant-current circuit (7), the other end connects the base stage of triode (T1), emitter resistance (R2) end connects the emitter stage of triode (T1), the other end is as the common port (4) of constant-current circuit (7), the emitter stage of triode (T2) connects the common port (4) of constant-current circuit (7), the base stage of triode (T2) connects the emitter stage of triode (T1), the colelctor electrode of triode (T2) connects the base stage of triode (T1), the colelctor electrode of triode (T1) is as the output (5) of constant-current circuit (7), the control end (3) of constant-current circuit (7) is connected with power positive end (1), and common port (4) is connected with power supply negative terminal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202130599U CN201281259Y (en) | 2008-10-31 | 2008-10-31 | Flexible LED lamp strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202130599U CN201281259Y (en) | 2008-10-31 | 2008-10-31 | Flexible LED lamp strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201281259Y true CN201281259Y (en) | 2009-07-29 |
Family
ID=40928133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202130599U Expired - Fee Related CN201281259Y (en) | 2008-10-31 | 2008-10-31 | Flexible LED lamp strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201281259Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011082670A1 (en) * | 2010-01-07 | 2011-07-14 | Liu Changgui | Led daylight lamp |
| CN113518490A (en) * | 2021-04-27 | 2021-10-19 | 中山市争渡照明科技有限公司 | Double NPN constant voltage and constant current lamp strip control circuit |
| CN113905484A (en) * | 2021-10-12 | 2022-01-07 | 恒亦明（重庆）科技有限公司 | Low-voltage LED lamp strip |
-
2008
- 2008-10-31 CN CNU2008202130599U patent/CN201281259Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011082670A1 (en) * | 2010-01-07 | 2011-07-14 | Liu Changgui | Led daylight lamp |
| CN113518490A (en) * | 2021-04-27 | 2021-10-19 | 中山市争渡照明科技有限公司 | Double NPN constant voltage and constant current lamp strip control circuit |
| CN113905484A (en) * | 2021-10-12 | 2022-01-07 | 恒亦明（重庆）科技有限公司 | Low-voltage LED lamp strip |
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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: 20090729 Termination date: 20161031 |