CN105864654A - Low-power-consumption cuttable constant-current LED lamp strip - Google Patents
Low-power-consumption cuttable constant-current LED lamp strip Download PDFInfo
- Publication number
- CN105864654A CN105864654A CN201610398105.6A CN201610398105A CN105864654A CN 105864654 A CN105864654 A CN 105864654A CN 201610398105 A CN201610398105 A CN 201610398105A CN 105864654 A CN105864654 A CN 105864654A
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- Prior art keywords
- constant
- current
- circuit
- led
- cutting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Abstract
The invention discloses a low-power-consumption cuttable constant-current LED lamp strip. The lamp strip comprises a strip-shaped circuit board, a circuit arranged on the circuit board, and a shell wrapping the circuit board and the circuit. The circuit comprises a positive pole interface, a negative pole interface, a constant-current circuit and LED lamp sets, wherein the positive pole interface and the negative pole interface are connected with an external direct-current power source, and the LED lamp sets are connected between the positive pole interface and the constant-current circuit. Each LED lamp set comprises a current sampling resistor and a plurality of LED lamps, wherein the current sampling resistor and the LED lamps are connected in series, each LED lamp set is arranged in a gathered mode, a gap facilitating cutting is reserved between every two adjacent LED lamp sets, and cutting position icons are marked on the portions, corresponding to the gaps, on the outer surface of the shell. Cutting can be conducted according to site requirements, and the lamp strip is cut every 50 mm. The power source has the constant-current function, so that heat loss of the circuits is reduced by 15%. Under the condition that power is the same, light emitting is 15% higher than that of a constant-voltage soft lamp strip. Because of constant-current drive, after the length of the lamp strip is reduced due to cutting, step-down on the circuits does not influence light-emitting brightness, so that light emitting is uniform.
Description
Technical field
The present invention relates to LED, particularly relate to a kind of power consumption relatively low, in use can be according to the constant-current LED light bar of field demand cutting length.
Background technology
LED is because its energy consumption advantage low, life-span length is loved by the people, and the market development goes out the LED of variously-shaped style.Wherein the LED of strip is used for product showcase, StoreFront door head, ultrathin lamp box backlight, hotel's KTV setting, outdoor brightening, household smallpox, furred ceiling entry decoration etc..Existing LED is fixed length, needs to buy the light bar of corresponding length according to on-the-spot demand, brings very big inconvenience to buying and installation；The most existing light bar uses constant pressure control system, and resistance is connected with LED, and circuit loss is big, and has pressure drop to easily cause non-uniform light on circuit, along with the lengthening brightness of lamp bar can be more and more lower.Therefore market need badly exploitation a kind of low in energy consumption, the constant-current LED light bar of cutting length can be carried out according to field demand.
Summary of the invention
The present invention is to solve the problems referred to above of prior art, propose a kind of power consumption the lowest, in use can be according to the constant-current LED light bar of field demand cutting length.
For solving above-mentioned technical problem, the technical scheme that the present invention proposes be design a kind of low-power consumption can the constant-current LED light bar of cutting, circuit board including strip, circuit on circuit boards, parcel circuit board and the shell of circuit are set, described circuit includes the positive and negative electrode interface connecting external dc power, it is connected to the constant-current circuit between positive and negative electrode interface, the LED group being connected between anode interface and constant-current circuit；Each LED group all includes current sampling resistor and several LED being sequentially connected in series, wherein current sampling resistor one terminate described anode interface, another terminate the first common port, first common port is to constant-current circuit feedback sample current value, each LED group connects the second common port away from one end of sampling resistor, and the second common port connects constant-current circuit by step-down choke induction；Each LED group gathers setting, leaves the gap being easy to cutting between adjacent LED lamp group, and the outer surface in the corresponding described gap of described shell is labeled with cutting position icon；The LED group quantity that described constant-current circuit is accessed by described sampled current value perception, provides current constant control to LED group.
Described constant-current LED light bar two ends are all provided with positive and negative electrode interface, and the interface of LED one end can be with the interface grafting of the other end, and the interface at two ends is interconnected by the circuit on circuit board.
Described constant-current circuit uses voltage-dropping type constant current chip, the power end of constant current chip connects described anode interface, this power end is connected shunt capacitance between described negative pole interface, the ground end of constant current chip connects described negative pole interface, the switch terminals of constant current chip connects one end of described step-down choke induction, another of this step-down choke induction terminates described second common port, described switch terminals connects two poles to forward between power end, and the current sample end of constant current chip connects described first common port.
Described external dc power uses 12 volts of dc sources.
Described constant current chip model is PT4115.
Compared with prior art, the present invention can be according to field demand cutting, by every 50MM mono-section, the cutting of whole section whole section；Because power supply has constant current function, the thermal losses of circuit is made to reduce by 15%；Higher by 15% than constant voltage soft light bar with going out light in the case of power, simultaneously as be that constant current drives, after cutting light bar length, luminosity will not be impacted by the pressure drop on circuit, thus luminous uniform.
Accompanying drawing explanation
Fig. 1 is the theory diagram of present pre-ferred embodiments；
Fig. 2 is the circuit diagram of present pre-ferred embodiments；
Fig. 3 is the product appearance schematic diagram of present pre-ferred embodiments.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein is used only for explaining the present invention, be not intended to limit the present invention.
Present invention is disclosed a kind of low-power consumption can the constant-current LED light bar of cutting, circuit board including strip, circuit on circuit boards, parcel circuit board and the shell of circuit are set, described circuit includes the positive and negative electrode interface connecting external dc power, it is connected to the constant-current circuit between positive and negative electrode interface, the LED group being connected between anode interface and constant-current circuit.Referring to the theory diagram shown in Fig. 1, external dc power can use constant voltage source, converts backward LED group through constant-current circuit and provides constant-current supply, is beneficial to when LED group quantity increases and decreases have stable constant current output, makes LED group luminous uniformly.
Referring to the circuit diagram shown in Fig. 2, each LED group all includes current sampling resistor and several LED being sequentially connected in series.It is 3 LED series connection in the preferred embodiment, totally 10 groups of LED groups.In Fig. 2, current sampling resistor is sequentially connected in series with LED, current sampling resistor one terminate described anode interface, another terminate the first common port COM1, first common port is to constant-current circuit feedback sample current value, each LED group connects the second common port COM2 away from one end of sampling resistor, and the second common port connects constant-current circuit by step-down choke induction L1.Referring to the product appearance schematic diagram shown in Fig. 3, each LED group 3 gathers setting, leave the gap being easy to cutting between adjacent LED lamp group, the outer surface in the corresponding described gap of described shell is labeled with cutting position icon 5 (cutting position icon can be lines can also be word)；The LED group quantity that described constant-current circuit is accessed by described sampled current value perception, provides current constant control to LED group.The a length of 50MM of one group of LED group in the preferred embodiment, the most whole group of cutting of LED group, during cutting, the sampled current value in group is cut out the most in the lump and is gone, the parallel resistance value of each sampled current value reduces, sampled current value reduces, constant-current circuit controls constant current output according to the sampled current value of feedback, makes LED group luminescence constant homogeneous.
Referring to Fig. 3, in the preferred embodiment, described LED two ends are all provided with positive and negative electrode interface, and the interface of LED one end can be with the interface grafting of the other end, and the interface at two ends is interconnected by the circuit on circuit board.So it is easy to get up to form longer light belt by two (or multiple) LED series connection grafting.
Referring to Fig. 2, in the preferred embodiment, described constant-current circuit uses voltage-dropping type constant current chip, the power end (VIN) of constant current chip connects described anode interface, it is connected shunt capacitance C1 between this power end with described negative pole interface, the ground end (GND) of constant current chip connects described negative pole interface, the switch terminals (SW) of constant current chip, connect one end of described step-down choke induction L1, another of this step-down choke induction terminates described second common port, switch terminals is the drain terminal of constant current chip internal power switch, after power switch conducting, the second common port COM2 is connected with ground GND, dc source forms loop with LED group, LED group is lit.It is fly-wheel diode that described switch terminals to forward between power end connects diode D1, D1.The current sample end (CSN) of constant current chip connects described first common port.In the preferred embodiment, depicting 10 groups of LED groups, sampling resistor R1 to R10 is also connected between CSN and VIN end.
In the preferred embodiment, described external dc power uses 12 volts of dc sources.Described constant current chip model is PT4115.
Constant current chip also has a switch Enable Pin (DIM or title simulation and PWM dim end), and this end can control break-make and the brightness of LED group of power switch.
Above example by way of example only, non-provides constraints.Any without departing from the application spirit and scope, and the equivalent modifications that it is carried out or change, it is intended to be limited solely by among claims hereof scope.
Claims (5)
1. a low-power consumption can the constant-current LED light bar of cutting, circuit board including strip, circuit on circuit boards, parcel circuit board and the shell of circuit are set, it is characterized in that: described circuit includes connecting the positive and negative electrode interface of external dc power, it is connected to the constant-current circuit between positive and negative electrode interface, the LED group being connected between anode interface and constant-current circuit；
Each LED group all includes current sampling resistor and several LED being sequentially connected in series, wherein current sampling resistor one terminate described anode interface, another terminate the first common port, first common port is to constant-current circuit feedback sample current value, each LED group connects the second common port away from one end of sampling resistor, and the second common port connects constant-current circuit by step-down choke induction (L1)；
Each LED group gathers setting, leaves the gap being easy to cutting between adjacent LED lamp group, and the outer surface in the corresponding described gap of described shell is labeled with cutting position icon；
The LED group quantity that described constant-current circuit is accessed by described sampled current value perception, provides current constant control to LED group.
2. low-power consumption as claimed in claim 1 can the constant-current LED light bar of cutting, it is characterized in that: described LED two ends are all provided with positive and negative electrode interface, the interface of LED one end can be with the interface grafting of the other end, and the interface at two ends is interconnected by the circuit on circuit board.
3. low-power consumption as claimed in claim 2 can the constant-current LED light bar of cutting, it is characterized in that: described constant-current circuit uses voltage-dropping type constant current chip, the power end of constant current chip connects described anode interface, shunt capacitance (C1) it is connected between this power end with described negative pole interface, the ground end of constant current chip connects described negative pole interface, the switch terminals of constant current chip connects one end of described step-down choke induction (L1), another of this step-down choke induction terminates described second common port, described switch terminals connects diode (D1) to forward between power end, the current sample end of constant current chip connects described first common port.
4. low-power consumption as claimed in claim 3 can the constant-current LED light bar of cutting, it is characterised in that: described external dc power uses 12 volts of dc sources.
5. low-power consumption as claimed in claim 4 can the constant-current LED light bar of cutting, it is characterised in that: described constant current chip model is PT4115.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610398105.6A CN105864654A (en) | 2016-06-07 | 2016-06-07 | Low-power-consumption cuttable constant-current LED lamp strip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610398105.6A CN105864654A (en) | 2016-06-07 | 2016-06-07 | Low-power-consumption cuttable constant-current LED lamp strip |
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| CN105864654A true CN105864654A (en) | 2016-08-17 |
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| CN201610398105.6A Pending CN105864654A (en) | 2016-06-07 | 2016-06-07 | Low-power-consumption cuttable constant-current LED lamp strip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107835539A (en) * | 2017-10-09 | 2018-03-23 | 中山市光兴照明科技有限公司 | A kind of novel LED lamp band |
| CN109982487A (en) * | 2019-04-23 | 2019-07-05 | 珠海其美光电科技有限公司 | A kind of LED line shape lamp of isometric impedance |
| CN110307477A (en) * | 2019-08-05 | 2019-10-08 | 厦门集长新材料科技有限公司 | A kind of constant-voltage LED light bar cut |
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| CN2660299Y (en) * | 2003-11-14 | 2004-12-01 | 台州立发电子有限公司 | LED strip comprising of waterproof sticker |
| CN2901019Y (en) * | 2006-03-23 | 2007-05-16 | 苏文地 | LED lighting lamp |
| CN201037609Y (en) * | 2007-03-26 | 2008-03-19 | 深圳市宝诚鑫光电科技有限公司 | Water-proof luminescent diode lamp belt |
| CN201116666Y (en) * | 2007-08-30 | 2008-09-17 | 鹤山丽得电子实业有限公司 | Flexible LED lamp belt |
| CN203136265U (en) * | 2013-02-27 | 2013-08-14 | Tcl王牌电器(惠州)有限公司 | Circuit and device for LED constant current driving |
| CN204392672U (en) * | 2015-03-10 | 2015-06-10 | 唐建伟 | A kind of constant-current driving LED lamp |
| CN104832822A (en) * | 2015-05-12 | 2015-08-12 | 深圳市毅宁亮照明有限公司 | Constant-voltage power-supply constant-current driving circuit and LED (Light-Emitting Diode) lamp strip |
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2016
- 2016-06-07 CN CN201610398105.6A patent/CN105864654A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2660299Y (en) * | 2003-11-14 | 2004-12-01 | 台州立发电子有限公司 | LED strip comprising of waterproof sticker |
| CN2901019Y (en) * | 2006-03-23 | 2007-05-16 | 苏文地 | LED lighting lamp |
| CN201037609Y (en) * | 2007-03-26 | 2008-03-19 | 深圳市宝诚鑫光电科技有限公司 | Water-proof luminescent diode lamp belt |
| CN201116666Y (en) * | 2007-08-30 | 2008-09-17 | 鹤山丽得电子实业有限公司 | Flexible LED lamp belt |
| CN203136265U (en) * | 2013-02-27 | 2013-08-14 | Tcl王牌电器(惠州)有限公司 | Circuit and device for LED constant current driving |
| CN204392672U (en) * | 2015-03-10 | 2015-06-10 | 唐建伟 | A kind of constant-current driving LED lamp |
| CN104832822A (en) * | 2015-05-12 | 2015-08-12 | 深圳市毅宁亮照明有限公司 | Constant-voltage power-supply constant-current driving circuit and LED (Light-Emitting Diode) lamp strip |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107835539A (en) * | 2017-10-09 | 2018-03-23 | 中山市光兴照明科技有限公司 | A kind of novel LED lamp band |
| CN107835539B (en) * | 2017-10-09 | 2019-08-02 | 中山市光兴照明科技有限公司 | A kind of novel LED lamp band |
| CN109982487A (en) * | 2019-04-23 | 2019-07-05 | 珠海其美光电科技有限公司 | A kind of LED line shape lamp of isometric impedance |
| CN110307477A (en) * | 2019-08-05 | 2019-10-08 | 厦门集长新材料科技有限公司 | A kind of constant-voltage LED light bar cut |
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Application publication date: 20160817 |
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| RJ01 | Rejection of invention patent application after publication |