CN1683820A - AC LED lighting lamp - Google Patents
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- CN1683820A CN1683820A CNA2005100204936A CN200510020493A CN1683820A CN 1683820 A CN1683820 A CN 1683820A CN A2005100204936 A CNA2005100204936 A CN A2005100204936A CN 200510020493 A CN200510020493 A CN 200510020493A CN 1683820 A CN1683820 A CN 1683820A
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Abstract
The AC LED lighting lamp includes AC input ends and AC LED filament, and the AC LED filament includes at least two parallelly connected LED arrays in opposite conducting directions and may be in integrated structure. The present invention has the advantages of simple structure without rectifier, voltage stabilizer, filter and switching power source, and high lighting efficiency.
Description
[technical field]
The present invention relates to a kind of lighting apparatus, specifically relate to a kind of AC LED lighting lamp.
[background technology]
Since Edison's invention electric light in 1879, the creation of this greatness has been brought the mankind into and has been full of the bright and unlimited possible new century, and the appearance of artificial light sources is known as the initial milestone of modern civilization society by International Technology circle.From having only the carbon filament electric light in 8 hour life-span the earliest, the fluorescent lamp that excites to incandescent tungsten lamp, high-pressure fluorescence, the high-pressure sodium lamp that utilizes the atomic spectral line transition luminescence, mercury vapor lamp, spiral energy-saving lamp etc., the lighting based on various principle of luminosity is an A wide selection of colours and designs, of all shapes and colors now.Yet the long-life of lighting, high light quantity and low energy consumption are the research direction of people's unremitting effort forever.
The appearance that integrates the LED (Light-emitting diode light-emitting diode) of various advantages, the arrival that is declaring publicly new solid light source epoch undoubtedly.LED is a kind of semiconductor that electric energy can be converted into visible light, it changed the incandescent lamp tungsten filament luminous with the luminous principle of electricity-saving lamp tricolor powder, and adopt electroluminescence, have long, numerous advantages such as light efficiency is high, radiationless and low-power consumption of life-span.The spectrum of LED almost all concentrates on visible light frequency band, and luminous efficiency can reach 80～90%; Light quality height, essentially no radiation belongs to typical green illumination light source; Life-span is especially near 1,000,000 hours, and is reliability and durability, and maintenance cost is very cheap.
Although LED has above numerous advantages, but the development that it passed through 5～6 years is not accepted by market and consumer so far yet, enter the main flow field of illuminating lamps, this be because both at home and abroad institute's LED light fixture of researching and developing and producing particularly the white light LEDs light fixture also can not reach the requirement of lighting source far away, mainly be reflected in: 1, monomer power is low.It is reported that monomer LED power on the market generally below 1W, only depends on single LED can't reach the needs that conventional brightness is thrown light on far away at present, realize that high light flux, high light efficiency are the technical barriers of being badly in need of solution in the LED evolution from now on.At present, the scheme that improves single LEDs luminous quantity has two: one, improves the luminous efficiency of die material, reaches at operating current I
FObtain bigger luminous flux under the constant situation, this is the main direction researched and developed of furnishing a huge amount of money for both at home and abroad, and just road arduousness is still at present shouldered heavy responsibilities; The 2nd, enlarge single LEDs die area, by more I
FThereby, reach the purpose of more multiple light.But the technical problem that this scheme is brought is many, except heat radiation, also can cause: (1) light efficiency descends, and single light efficiency of low-power LED can reach more than the 40lm/W at present, strengthens die area and enlarges I
FAnd the light efficiency increase of must generating heat that descends makes heat dissipation problem more outstanding; (2) die area strengthens, and euqalizing current density is difficulty more, causes the tube core local current excessive overheated and decline is in advance had a greatly reduced quality the LED bulk life time easily.2, drive circuit cost height uses inconvenience.Present lighting field adopts the most general common interchange illumination that surely belongs to, and the existing common AC power (for example city's electrical network of alternating current 220V, interchange 110V city electrical network etc.) that adopts can roughly be divided into two kinds of situations for the drive circuit scheme of LED power supply: a kind of is to obtain DC driven by links such as traditional AC transformation, rectification, series connection voltage stabilizings; A kind of is to adopt advanced Switching Power Supply directly to produce required D.C. regulated power supply.The former has the cost height because used devices such as transformer, current-limiting resistance, shortcomings such as energy consumption is big, Heavy Weight, and it is comparatively general that the latter uses, though have low energy consumption, complex structure, cost also are higher.Because such scheme in fact all is to resupply LED after alternating current is converted into direct current, therefore, in fact can directly not adopt the LED illuminating lamp of Alternating Current Power Supply.
Illumination application study to LED at present mainly concentrates on two aspects, and one is the switching circuit of high stability, and its purpose is to provide stable, pure electric current for LED.From the effect that obtains, the achievement of this respect is quite abundant and outstanding.At the beginning of the application of LED, because its expensive and little use amount of bringing thus (generally all be single or a few LEDs use simultaneously), it is necessary to adopt Switching Power Supply to provide stable electric current almost to become, and this also is that industry is poured into the reason that a large amount of manpower and materials are carried out this respect research.Along with the rapid reduction of LED manufacturing cost, that uses that switching circuit brought is expensively just becoming the biggest obstacle that LED popularizes and promotes at lighting field but in fact.That can exaggerate not says, pursuing simply of Switching Power Supply become the mistaken ideas that the LED illumination is studied.
[summary of the invention]
The technical problem to be solved in the present invention provides a kind of LED lighting that can directly adopt Alternating Current Power Supply and need not complicated drive circuit.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of AC LED lighting lamp, comprise ac input end and be connected AC LED filament between the ac input end, described AC LED filament comprises the opposite light emitting diode matrix of at least two group conducting directions in parallel.The implication of alleged among the present invention " light emitting diode matrix " is: the light emitting diode by series connection more than or constitutes basic row, so basic row or so basic row formation light emitting diode matrix that is in parallel more than can also laterally connect between the light emitting diode in these different lines simultaneously and make described light emitting diode matrix have latticed structure.Described light emitting diode can be single LED, also can be the combination with several LED of above-mentioned array structure.In a light emitting diode matrix, can adopt different version to different light emitting diodes as required.
The another kind of technical scheme that the present invention taked is to select integrated filament, that is: a kind of AC LED lighting lamp, comprise ac input end and be connected AC LED filament between the ac input end, described AC LED filament comprises the opposite integrated tube core of series connection of at least two row conducting directions in parallel, the integrated tube core of described series connection be on a LED substrate with the integrated tube core of two-stage at least of mode of series connection, described tube cores at different levels are single tube cores or mixing ways of connecting by a plurality of single tube cores through serial or parallel connection or connection in series-parallel constitutes.
The series connection of above-mentioned tube cores at different levels preferably has the face contacting structure that the positive and negative level of tight arrangement is pasted mutually.
Above-mentioned AC LED filament can have many, is connected with ac input end by control switch respectively.Can be with similar monochromatic LED tube core in described every AC LED filament, different AC LED filaments adopts different colors respectively.
Described control switch can adopt controllable silicon.
Described AC LED filament can be selected three kinds of colors of red, green, blue, and its quantitative proportion becomes white light to be configured according to mixed luminescence.
Described AC LED filament also can be selected Huang, blue two kinds of colors, and its quantitative proportion becomes white light to be configured according to mixed luminescence.
Adopt technique scheme, beneficial technical effects of the present invention is: 1) directly insert the opposite AC LED filament of at least two row conducting directions between ac input end, save drive circuits such as the alternating current-direct current rectification adopted in the available circuit scheme, voltage stabilizing, filtering and more need not the high Switching Power Supply of price, only need be with operating voltage (by number and its operating voltage V of all LED tube cores of being connected in the filament
FCome to determine, can carry out standardized designs, to be suitable for different application scenarios) AC LED lamp that adapts directly is connected and just can carries out economy on the AC power and LED illumination efficiently; 2) adopting the integrated filamentray structure of series connection, can be the disposable satisfactory LED filaments such as operating voltage, color of producing in the mask stage of LED tube core manufacturing, can reduce the cost of producing design greatly, improves product reliability; 3) adopt compact arranged contact form to realize series connection, omitted connecting line, not only simplified technology and design, and more reliable than the line connection, and loss is littler also more stable; 4) " multiterminal configuration " that adopts control switch respectively many filaments to be controlled, if be the luminous power that monochromatic filament of the same race (for example white light or ruddiness etc.) can be regulated whole lamp by control switch, if adopt the filament of different colours, then can regulate, more help flexible Application the luminous color of integral body; 5) each filament color is carried out suitable proportioning, can obtain " white light LEDs " in extremely economic mode, the low easily disadvantage of decay of fluorescent material life-span is blocked but also avoided to the patented technology that has not only got around other country, simultaneously owing to closely recline in the integrated mode of connecting between the monochromatic tube core, can be along with sightingpiston reaches good white light effect rapidly away from light source, economical and practical.
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
[description of drawings]
Fig. 1 is a kind of single filament AC LED lighting lamp structural representation.
Fig. 2 is a kind of LED array structure schematic diagram.
Fig. 3 is a kind of integrated single filament AC LED lighting lamp structural representation.
Fig. 4 is a kind of three grades of integrated AC type LED lamp filament structural representations.
Fig. 5 is the multistage integrated AC type LED lamp filament structural representation of a kind of in-line.
Fig. 6 is a kind of around the multistage integrated AC type LED lamp filament structural representation of shape.
Fig. 7 is the mask structure schematic diagram of integrated AC type LED lamp filament.
Fig. 8 is a kind of multiterminal control multi-filament AC LED lighting lamp structural representation.
[embodiment]
Embodiment one, a kind of single filament AC LED lighting lamp, in conjunction with Fig. 1, comprise ac input end a1, a2 and be connected AC LED filament between the ac input end, described AC LED filament comprises the light-emitting diode row that two row conducting directions in parallel are opposite, and every row light-emitting diode is listed as by several light-emitting diode series connection and forms.Ac input end a1, a2 directly are connected with AC power AC.
The operating voltage ACV that the concrete number N of series connection light-emitting diode can reach as required in each light-emitting diode row comes to determine in the following way,
N＝Int(DCV/Vf)
Wherein Int represents the result is rounded, and Vf is the nominal voltage value of light-emitting diode, generally is 1.8～2.2V to yellow, red light-emitting diode, generally is 3.0～3.4V to green, white light emitting diode,
Wherein, ACV can be various countries () the nominal center value of city's electrical network, be 220V for example to China, be 110V to the U.S.; K is an empirical parameter, generally gets 0.8, also can be by experiment, and for example the light-emitting diode number of the actual serial connection of increase and decrease makes it normally luminous, is determined by above-mentioned formula by experimental result and concrete magnitude of voltage again.
According to the structure in the present embodiment, single light-emitting diode row can also replace with the more complicated light emitting diode matrix of structure, for example, light emitting diode matrix with Fig. 2 structure: m is listed as by n LED-j-i (1≤j≤m, the row of the series connection of 1≤i≤n) the composition light emitting diode matrix that is connected in parallel has horizontal connection between the light-emitting diode in the different lines simultaneously and makes described light emitting diode matrix have latticed structure.By that analogy, light emitting diode matrix can also adopt a lot of other forms of structures, as long as it is just passable to guarantee to carry out unidirectional conducting.In when design, note making the size of current of the operating voltage of respectively organizing light emitting diode matrix in parallel and forward and reverse conducting identical or approaching.
Embodiment two, a kind of integrated single filament AC LED lighting lamp, in conjunction with Fig. 3 and Fig. 4, comprise ac input end a1, a2 and be connected AC LED filament between the ac input end, AC LED filament in this example adopts three grades of integrated AC type LED lamp filaments, its structural representation is seen Fig. 4, comprise the integrated tube core of series connection that two row conducting directions are opposite, every row connect integrated tube core all by on substrate base 1 by compact arranged three LED core 2 of positive and negative mode of joining each other, 3,4 form, each single tube core becomes the one-level of the integrated tube core of series connection separately, a is the positive pole of single tube core, b is a negative pole, and c is the luminous element part.The negative pole of the positive pole of tube core 4, tube core 2 is electrically connected with anodal A, the negative pole B of substrate respectively.
According to the structure in the present embodiment, the integrated tube core of each row series connection can also adopt and more single tube core be carried out in-line or around the structure of the plural serial stage of shape, as Fig. 5, (5 for being electrically connected material among Fig. 6) shown in Figure 6, can certainly do the arrangement of other shapes.The plurality of LEDs tube core is assemblied in/is manufactured on the total substrate with the series connection form, can obtain needed higher forward voltage V
FThereby, under the suitable situation of power, have less forward current I
F
In addition, in order to improve the overall brightness of filament, can also increase the columns of the integrated tube core of series connection or increase the area of the integrated tube core of single-row series connection.In when design, note making the size of current of each row integrated tube core operating voltage of series connection in parallel and forward and reverse conducting identical or approaching.
The at different levels of integrated tube core that connect can be single tube cores, also can be made of two of parallel connection or many single tube cores.Can certainly adopt the part level to constitute, and the part level is still used the structure of single tube core with parallel-connection structure.
Integrated realization both can be arranged in after monomer LED tube core produces, and some required monomer LED tube cores are integrated together the LED integrated tube core with higher VF that produces an equivalence with the structure of plural serial stage; Also technology can be advanceed in the monomer LED tube core production process, for example for the LED of single variety or for the LED that adopts identical semiconductor foundation material, realization of the present invention can just begin to carry out in the technical process in early stages such as doping, masks, on backing material, directly mask generates continuous PN junction structure, and making can be simplified subsequent technique and cost like this.Fig. 7 is the mask structure schematic diagram that directly generates integrated AC type LED lamp filament on as the brilliant garden of substrate, 6 for generating the part of P-type material among Fig. 7,7 adjacent parts for the generation n type material, fill with electric conducting material 8 isolation strip between the adjacent PN junction, so arrange and go round and begin again, form large-area PN junction series connection form domain.The operating voltage V of concrete LED heater chain
FDetermine that by PN junction series connection progression its power is then determined by PN junction conductive area (being each different in width that is listed as that demarcates with dotted line among Fig. 7).Owing to consider that high-power big electric current can bring the difficulty in the heat radiation, and temperature rise can further bring I
FRise, so the definite of different in width should be according to current density and operating current I
FBetween relation, fully balance increases the requirement of power and heat radiation two aspects.
In the above-described embodiments, what can require according to the standardization of operating voltage to determine the number of integrated tube core, when occurring indivedual the damage in the tube core, if the operate as normal that does not then influence other tube cores is damaged in short circuit, the situation of having only open circuit to damage just can cause whole fault, and LED-based high reliability and long-life, even under the situation that quite high integrated level is arranged, probability of failure also is very little.If under the situation of city's electrical network power supply, select the lower AC type LED lamp filament product of nominal value for use, should cooperate suitable transformer, change line voltage into suitable alternating voltage.
Embodiment three, a kind of multiterminal control multi-filament AC LED lighting lamp, in conjunction with Fig. 8, comprise ac input end a1, a2 and 3 AC LED filaments of being made up of red R, green G, blue B three-color LED respectively, these three filaments are connected with ac input end by the SCR control switch respectively.Identical among the structure of each wall scroll tube core and the embodiment one.
Can adjust whole LED illuminating lamp color, brightness etc. by control R, G, the SCR control end Rc of three filaments of B, Gc, Bc in actual use.
Except adopting red, green, blue as the filament color combinations, can also adopt Huang, blue combination etc., can certainly all adopt same monochromatic filament, like this control switch control has been exactly the overall brightness of lamp.Except doing the control switch of filament, in the application of some large LED array, can also adopt digitized control mode in addition, recently control each street lamp silk break-make situation by the duty of adjusting pulse signal with controllable silicon.
Claims (8)
1, a kind of AC LED lighting lamp comprises ac input end and is connected AC LED filament between the ac input end that described AC LED filament comprises the opposite light emitting diode matrix of at least two group conducting directions in parallel.
2, a kind of AC LED lighting lamp, comprise ac input end and be connected AC LED filament between the ac input end, described AC LED filament comprises the opposite integrated tube core of series connection of at least two row conducting directions in parallel, the integrated tube core of described series connection be on a LED substrate with the integrated tube core of two-stage at least of mode of series connection, described tube cores at different levels are single tube cores or mixing ways of connecting by a plurality of single tube cores through serial or parallel connection or connection in series-parallel constitutes.
3, AC LED lighting lamp according to claim 2 is characterized in that: the series connection of described tube cores at different levels has the face contacting structure that the positive and negative level of tight arrangement is pasted mutually.
4, according to any described AC LED lighting lamp of claim 1 to 3, it is characterized in that: described AC LED filament has many, is connected with ac input end by control switch respectively.
5, AC LED lighting lamp according to claim 4 is characterized in that: be similar monochromatic LED tube core in described every AC LED filament, different AC LED filaments adopts different colors respectively.
6, AC LED lighting lamp according to claim 5 is characterized in that: described control switch adopts controllable silicon.
7, AC LED lighting lamp according to claim 5 is characterized in that: described AC LED filament comprises three kinds of colors of red, green, blue, and its quantitative proportion becomes white light to be configured according to mixed luminescence.
8, AC LED lighting lamp according to claim 5 is characterized in that: described AC LED filament comprises Huang, blue two kinds of colors, and its quantitative proportion becomes white light to be configured according to mixed luminescence.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100204936A CN100464111C (en) | 2005-03-04 | 2005-03-04 | AC LED lighting lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100204936A CN100464111C (en) | 2005-03-04 | 2005-03-04 | AC LED lighting lamp |
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| CN1683820A true CN1683820A (en) | 2005-10-19 |
| CN100464111C CN100464111C (en) | 2009-02-25 |
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| CNB2005100204936A Expired - Fee Related CN100464111C (en) | 2005-03-04 | 2005-03-04 | AC LED lighting lamp |
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| WO2009065247A1 (en) * | 2007-11-20 | 2009-05-28 | Industrial Technology Research Institute | Lamp apparatuses |
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| CN101917810A (en) * | 2010-09-03 | 2010-12-15 | 贵阳世纪天元科技有限公司 | LED (Light Emitting Diode) lighting method and device in AC power supply mode |
| CN101986009A (en) * | 2010-11-02 | 2011-03-16 | 华南理工大学 | Adaptive alternating current light-emitting diode filament and illuminating lamp |
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