CN100484345C - Decoration lamp string with rectification circuit - Google Patents
Decoration lamp string with rectification circuit Download PDFInfo
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- CN100484345C CN100484345C CNB2005101130944A CN200510113094A CN100484345C CN 100484345 C CN100484345 C CN 100484345C CN B2005101130944 A CNB2005101130944 A CN B2005101130944A CN 200510113094 A CN200510113094 A CN 200510113094A CN 100484345 C CN100484345 C CN 100484345C
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- full bridge
- bridge rectifier
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Abstract
This invention discloses a decoration lamp string with a rectifying circuit including: a front plug and a tail plug serially connected via two leads, a total bridge rectifying circuit, the AC input end of said circuit is connected with the two leads, a LED serial section serial between the output positive and the negative characterizing: a total bridge rectifying circuit is set on either the front or the tail plug separately and a LED serial section is set between the two total bridge rectifying circuits and the AC input of the circuit has at least a pressure drop element.
Description
Technical field
The present invention relates to the lamp decoration field, especially a kind of circuit structure that connects the band rectification circuit of one or more LED decorative chains.
Background technology
Because light-emitting diode (LED) has reliably, low power consuming, hang down superior functions such as working temperature and long life, LED Christmas lights and LED decorative lamp are more and more universal in the middle of people's life.The manufacturer of LED lamp decoration when maximization improves the brightness of LED lamp and other advantage, the gap between the production cost that dwindles LED lamp decoration and conventional incandescent lamp decoration of always trying every means.
As everyone knows, the LED lamp is worked under DC power supply and can have been given play to high brightness and long-life advantage.Yet, as shown in Figure 1, the full bridge rectifier of Shi Yonging in the prior art, not only the rectifier diode in the circuit transships easily, has potential safety hazard, and number of electrical lines is many simultaneously, influences the outward appearance of lamp string.When comprising a LED series block and tail in the lamp string and insert, just need 4 and connect leads, when containing two or more LED series block, just need 5 or above connection lead.
For thereby the quantity of saving electric wire reduces production costs, the technology of Fig. 1 is improved, as shown in Figure 2, the principal character of this technology is that four rectifier diodes in the rectification circuit are placed apart in the both sides of circuit, and circuit just need only get final product by 3 leads like this.But when a plurality of LED series block are connected in parallel, the quantity that connects lead also increases thereupon, (five leads of needs during three LED series block of four leads of needs when the lamp string comprises two LED series block, so analogize), therefore lead of saving cost 20%-25% that can descend when having only 1-2 LED series block, but when the more LED series block of parallel connection, it is little to the meaning of cost to save a lead, seriously limit the design and use of lamp string, and made production procedure become more complicated.
And, when the lamp string comprises a plurality of LED series block, use Fig. 1, circuit connecting mode shown in Figure 2 all to have potential safety hazard.It is overheated to cause because a plurality of LED series block in parallel, load (total current) increase, AC-DC conversion equipment (rectifier diode) meeting heat up rapidly, and therefore, above-mentioned two kinds of connected modes all have strict restriction to the quantity of LED series block.
And for the voltage that reduces the LED lamp and increase the service life, the urgent hope of people can reduce DC pulse so that the LED current peak minimizes, and this still fails effectively to solve in the prior art.
Summary of the invention
In order to solve the shortcoming of the existing above-mentioned prior art that is mentioned to, the purpose of this invention is to provide a kind of decorative chain with rectification circuit, it is safe in utilization, good looking appearance, long service life.
The object of the present invention is achieved like this: a kind of decorative chain with rectification circuit comprises:--preceding inserting with tail inserted, and preceding slotting inserting with tail is connected in series by two leads;--full bridge rectifier, the ac input end of this full bridge rectifier are connected with two leads respectively;-LED series block is series between the direct current output cathode and negative pole of full bridge rectifier; It is characterized in that: described anterior insert end and tail spigot are respectively equipped with a full bridge rectifier, serial connection one LED series block between these two full bridge rectifiers, the positive pole of LED series block is connected with the positive pole of the dc output end of one of them full bridge rectifier, the negative pole of LED series block is connected with the negative pole of the dc output end of another full bridge rectifier, and the ac input end of full bridge rectifier is connected with at least one voltage drop element.
Be serially connected with a LED series block again between the vacant direct current output stage of described two full bridge rectifiers.
Be plugged with one or more full bridge rectifier in the described LED series block, the ac input end of this full bridge rectifier (05) is contacted respectively, and at least one voltage drop element (31) is back to be connected with two leads (21).
Be in series with voltage drop element between the direct current output negative pole of described LED series block and full bridge rectifier.
Comprise the full bridge rectifier of inserting before being arranged in the connecting circuit of the present invention, and 1 to 2 LED series block.Rectifier control circuit also comprises one or more step-downs and/or filter element, and purpose is in order to reduce or to limit the drive current of LED, reducing (filtration) DC pulse.In the LED series block, be in series with one or more full bridge rectifier, order wherein each rectification circuit and every section LED series block is connected in parallel with anterior insert end rectifier control circuit and first section LED series block formation, each rectification circuit and every section LED series block be independent of formerly or and circuit part subsequently, like this with regard to having got rid of rectifier diode in the prior art since electric current increase and the overheated potential safety hazard that causes.
Another advantage of the present invention is the restriction that has broken through prior art, designs restricted hardly, very flexible.For example, when the lamp string need not tail be inserted, only need two leads, cancelled second of the prior art as shown in Figure 2 and connected lead and virtual plug.The lamp string that magnetic tape trailer is inserted is made of element that need not be extra one or two LED series block; Perhaps be not subjected to the LED series block of restricted number to be connected to form a continuous long lamp string from beginning to end by plurality of sections, whether the employing of connector only depends on the design length of lamp string.The length of continuous lamp string only is subjected to connecting the restriction of the permission power of lead or fuse.In addition, because each bridge rectifier and every section LED series block are independently to be connected in parallel, therefore in a lamp string, can be connected in parallel by the LED series block that rectification circuit is separated into plurality of sections different LED quantity.For example first section LED series block includes 75 LED lamps, and second section LED series block in parallel can have only 25 LED lamps, and in parallel the 3rd section then contains 50 LED lamps.
Another feature of the present invention is, vacant dc output end can be used as the power supply of other various adapters in two bridge rectifiers of lamp string head and the tail, adapters such as music, animation, film, animation equipment for example, or current control device independently, the differential type amplifying circuit (FET) that for example needs a power supply that independently the lamp string is not exerted an influence, perhaps other more suitable adapter.This is impossible realize in aforesaid technology formerly.
Need not increase with the increase of LED series block owing to connect the quantity of lead, so production cost descends naturally.Need 5 to connect leads when technology formerly as shown in Figure 1, a plurality of LED series block in parallel; Technology formerly as shown in Figure 2, LED series block of every increase will increase by one and connect lead; And among the present invention, no matter in parallel how last LED series block at most also only need 2 to 3 connection leads.
Manufacturing process has also been simplified greatly, and because the repeated use of same circuits structure improves production efficiency, thereby allow the centralized production of universal electric element.
Description of drawings
Fig. 1 is the circuit connection diagram of lamp string in the prior art;
Fig. 2 is the another kind of circuit connection diagram of lamp string in the prior art;
Fig. 3 A is the AC-input voltage curve chart of LED lamp string, and Fig. 3 B is the current curve diagram that connects back LED by circuit shown in Figure 1, and Fig. 3 C is the current curve diagram that connects back LED by circuit shown in Figure 2, and Fig. 3 D is the current curve diagram of LED in the connecting circuit of the present invention;
Fig. 4 A, 4B, 4C are respectively the circuit connection diagrams of three kinds of different structures of the present invention;
Fig. 5 A, 5B are respectively the circuit connection diagram and the outside drawings of another structure of the present invention;
Fig. 6 is the circuit connection diagram that the present invention is connected with adapter.
Embodiment
Below further specify the present invention in conjunction with the accompanying drawings by real example, but this specific examples does not limit the present invention.
Shown in Fig. 4 A-4C, the present invention comprises a common alternating current input power supplying 01, precedingly inserts 02, preceding rectifier control circuit 03, parallel two leads 21, series conductor 20, LED series block 30, voltage drop element 31, back rectifier control circuit 08, the tail that includes the interchange out-put supply 06 that can be other lamp string output AC voltages insert 07.
Comprise full bridge rectifier 05 and the voltage drop element that is connected on its ac input end in the rectifier control circuit, can reduce the voltage of direct current output cathode, reduce the peak value of (filtration) DC pulse.Fig. 3 A is the AC-input voltage curve chart of LED lamp string; Fig. 3 B is the direct current curve chart that connects back LED lamp string by circuit shown in Figure 1; Fig. 3 C is the direct current curve chart that connects back LED lamp string by circuit shown in Figure 2; Fig. 3 D is the direct current curve chart of LED lamp string in the connecting circuit of the present invention, has shown the minimum of LED lamp drive current in the different structure circuit, average, maximum respectively.From above-mentioned figure, as can be known, adopt the peak value minimum of the DC pulse of circuit structure of the present invention, so the useful life of LED is the longest.
Shown in Fig. 4 A, when only needing to use a LED series block, can omit tail and insert 07, before being become to include only, circuit reduction inserts 02, one full bridge rectifier 05 and a LED series block.Before insert 02 and be connected with alternating current input power supplying 01, the preceding rectifier control circuit 03 that is arranged at preceding slotting 02 end comprises a complete full bridge rectifier 05 and pressure regulation/filter element.The ac input end of full bridge rectifier 05 is in series with one or two voltage drop element 31 backs and is connected with preceding slotting 02 by two leads 21.A LED series block 03 is series between the direct current output cathode and negative pole of full bridge rectifier 05, forms the loop.Be in series with voltage drop element 31 between the direct current output negative pole of LED series block 30 and full bridge rectifier 05.Voltage drop element can adopt adjustable resistance, for example rheostat, electric capacity, saturated transistor, current limliting diode (CLD) or other impedance components.Between the positive pole of full bridge rectifier 05 direct current output and negative pole end, be parallel with adjustable dc filter capacitor.This adjustable dc filter capacitor can reduce the peak value of LED lamp drive current, can prolong the life-span of LED lamp so to greatest extent, but it is not to be the necessary components and parts of this circuit.
Embodiment 2
Fig. 4 B is a version the most basic among the present invention.Include preceding slotting 02 and the tail that are connected in series by two leads 21 and insert 07, insert before being placed in 02 and tail insert the preceding rectifier control circuit 03 and the back rectifier control circuit 08 at 07 two ends, before LED series block 30 is series between the direct current output negative pole of the direct current output cathode of rectifier control circuit 03 and back rectifier control circuit 08, constitute complete circuit, have only 3 leads in the entire circuit.Preceding rectifier control circuit 03 and this back rectifier control circuit 08 all include a full bridge rectifier 05, and its ac input end is connected with two leads 21 after being connected with at least one voltage drop element equally.Between full bridge rectifier 05 interchange end, be parallel with adjustable dc filter capacitor.Be in series with voltage drop element 31 between the direct current output negative pole of LED series block 30 and full bridge rectifier 05.
Embodiment 3
Shown in Fig. 4 C, include preceding slotting 02 and the tail that are connected in series by two leads 21 and insert 07, insert before being placed in 02 and tail insert the preceding rectifier control circuit 03 and the back rectifier control circuit 08 at 07 two ends, two LED series block 30, one of them LED series block 30 is identical with embodiment 2, constitutes complete circuit between the direct current output negative pole of the direct current output cathode of rectifier control circuit 03 and back rectifier control circuit 08 before being series at; And another LED series block 30 constitutes complete circuit between the vacant direct current output cathode of the vacant direct current output negative pole of rectifier control circuit 03 and back rectifier control circuit 08 before being series at.At present embodiment, two LED series block in the circuit form and are connected in parallel, and can reduce number of conductors, reduce manufacturing cost.
Preceding rectifier control circuit 03 and this back rectifier control circuit 08 all include a full bridge rectifier 05, and its ac input end is connected with two leads 21 after being connected with at least one voltage drop element equally.Between full bridge rectifier 05 interchange end, be parallel with adjustable dc filter capacitor.Be in series with voltage drop element 31 between the direct current output negative pole of LED series block 30 and full bridge rectifier 05.
Embodiment 4
Based on embodiment 2, in LED series block 30, can be plugged with one or more middle rectifier control circuits 11, make whole piece LED series block 30 be divided into a plurality of LED segmentations, this centre rectifier control circuit 11 contains full bridge rectifier 05, its ac input end is contacted equally respectively and is connected with two leads 21 behind at least one voltage drop element, forms the pattern of rectistack.Middle rectifier control circuit 11 with lamp string demultiplexing end to end the phase mutual connection the LED segmentation, so just can produce sufficiently long LED lamp string as required and need not the potential safety hazard of considering that rectifier diode is excessive owing to underpower generates heat.In the execution mode shown in 5A, rectifier control circuit 11 in the middle of being plugged with one in the LED series block 30, make whole piece LED series block 30 be divided into two LED segmentations, the direct current output negative pole of middle rectifier control circuit 11 is connected with the negative pole of last lamp string section, and the direct current output cathode of middle rectifier control circuit 11 is connected with the positive pole of back one lamp string section, thereby is concatenated into the lamp string of a strip.
In addition, be in series with voltage drop element 31 between the direct current output negative pole of every paths of LEDs segmentation and full bridge rectifier 05.Middle rectifier control circuit 11 is serially connected with long lamp string middle (as Fig. 5 B) by after the plastic encapsulation.Connecting circuit among Fig. 5 A, rectifier control circuit 03, back rectifier control circuit 08 and rectifier control circuit 11 (quantity of middle rectifier control circuit 11 is determined according to the way in parallel in the LED series block) in the middle of several before comprising, such design makes the LED quantity in the LED series block no longer be restricted, can reduce manufacture difficulty, reach manufacturing cost and minimize.
Shown in Fig. 5 B, preceding insert 02 with the plug 04 of preceding rectifier control circuit 03 being integral of aggregate erection, tail insert 07 with the connector 09 of back rectifier control circuit 08 being integral of aggregate erection.Perhaps, also can be as shown in Figure 6, precedingly insert 02 and adopt the common power plug, preceding rectifier control circuit 03 by insert before being serially connected with after the plastic encapsulation 02 and LED series block 30 between, rectifier control device before constituting, adapter obtains independently power supply by being connected with preceding rectifier control device.And tail is inserted the general umbilical connector of 07 employing, back rectifier control circuit 08 is by being serially connected with after the plastic encapsulation between tail slotting 07 and the LED series block 30, constitute the back rectifier control device, same, adapter can obtain independently power supply by being connected with the back rectifier control device.
Embodiment 5
Preceding rectifier control circuit 03 and back rectifier control circuit 08 vacant direct current terminal can be used as the power supply of the FET that needs independent current source, can provide constant-current supply to LED lamp string.This direct current terminal also can be used for doing the power supply (see figure 6) of other adapters, as CD-ROM drive motor 50, and train lamp holder 51, sound-producing devices 52 etc. increase the decorating feature of decorative chain, and need not additionally to increase the power supply access device, save material and production cost.
As shown in Figure 6, precedingly insert 02 and adopt the common power plug, preceding rectifier control circuit 03 by insert before being serially connected with after the plastic encapsulation 02 and LED series block 30 between, rectifier control device before constituting, adapter obtains independently power supply by being connected with preceding rectifier control device.And tail is inserted the general umbilical connector of 07 employing, back rectifier control circuit 08 is by being serially connected with after the plastic encapsulation between tail slotting 07 and the LED series block 30, constitute the back rectifier control device, equally, adapter can obtain independently power supply by being connected with the back rectifier control device, and this is can't realize in the prior art.
As everyone knows, the position of voltage component on the series arm and LED series block can exchange, and does not limit at this.
Claims (9)
1. decorative chain with rectification circuit comprises:
--(07) is inserted with tail in preceding insert (02), and preceding slotting (02) is inserted (07) with tail and is connected in series by two leads (21);
--full bridge rectifier (05), the ac input end of this full bridge rectifier (05) are connected with two leads (21) respectively;
--LED series block (30) is series between the direct current output cathode and negative pole of full bridge rectifier (05);
It is characterized in that: described anterior insert end and tail spigot are respectively equipped with a full bridge rectifier (05), serial connection one LED series block (30) between these two full bridge rectifiers (05), the positive pole of LED series block (30) is connected with the positive pole of the dc output end of one of them full bridge rectifier (05), the negative pole of LED series block (30) is connected with the negative pole of the dc output end of another full bridge rectifier (05), and the ac input end of full bridge rectifier (05) is connected with at least one voltage drop element (31).
2. the decorative chain of band rectification circuit according to claim 1 is characterized in that: be serially connected with a LED series block (30) again between the vacant direct current output stage of described two full bridge rectifiers (05).
3. the decorative chain of band rectification circuit according to claim 1, it is characterized in that: be plugged with one or more full bridge rectifier (05) in the described LED series block (30), the ac input end of this full bridge rectifier (05) is contacted respectively, and at least one voltage drop element (31) is back to be connected with two leads (21).
4. the decorative chain of band rectification circuit according to claim 1 is characterized in that: be in series with voltage drop element (31) between the direct current output negative pole of described LED series block (30) and full bridge rectifier (05).
5. according to the decorative chain of claim 1,2,3 or 4 described band rectification circuits, it is characterized in that: described voltage drop element (31) is adjustable resistance, rheostat, electric capacity, saturated transistor or current limliting diode.
6. according to the decorative chain of claim 1,2,3 or 4 described band rectification circuits, it is characterized in that: be parallel with a direct current filter capacitor between the ac input end of described full bridge rectifier (05).
7. according to the decorative chain of claim 1,2,3 or 4 described band rectification circuits, it is characterized in that: insert the plug (04) of (02) and full bridge rectifier (05), being integral of voltage drop element aggregate erection before described, described tail is plugged in the connector (09) of (07) and full bridge rectifier (05), being integral of voltage drop element aggregate erection.
8. according to the decorative chain of claim 1 or 3 described band rectification circuits, it is characterized in that: the full bridge rectifier (05), voltage drop element of inserting (02) end before described inserted between (02) and the LED series block (30) before being connected in after by plastic encapsulation, constitute plug and preceding rectifier control device (03) two parts, the full bridge rectifier of described tail spigot (05), voltage drop element are connected in tail after by plastic encapsulation and insert between (07) and the LED series block (30), constitute connector and back rectifier control device (08) two parts.
9. according to the decorative chain of claim 1 or 3 described band rectification circuits, it is characterized in that: output is connected with adapter the vacant dc output end of the full bridge rectifier (05) of described anterior insert end or tail spigot as a power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101130944A CN100484345C (en) | 2005-10-13 | 2005-10-13 | Decoration lamp string with rectification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101130944A CN100484345C (en) | 2005-10-13 | 2005-10-13 | Decoration lamp string with rectification circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1794890A CN1794890A (en) | 2006-06-28 |
| CN100484345C true CN100484345C (en) | 2009-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101130944A Active CN100484345C (en) | 2005-10-13 | 2005-10-13 | Decoration lamp string with rectification circuit |
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| CN (1) | CN100484345C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102404903B (en) * | 2010-09-13 | 2014-03-12 | 台达电子工业股份有限公司 | Lamp driving device |
| CN102454891A (en) * | 2010-10-22 | 2012-05-16 | 达能科技股份有限公司 | Two-loop LED lamp tube and lamp group |
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2005
- 2005-10-13 CN CNB2005101130944A patent/CN100484345C/en active Active
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| CN1794890A (en) | 2006-06-28 |
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