CN103256512A - Light emitting diode lamp - Google Patents

Light emitting diode lamp Download PDF

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Publication number
CN103256512A
CN103256512A CN2013101158200A CN201310115820A CN103256512A CN 103256512 A CN103256512 A CN 103256512A CN 2013101158200 A CN2013101158200 A CN 2013101158200A CN 201310115820 A CN201310115820 A CN 201310115820A CN 103256512 A CN103256512 A CN 103256512A
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China
Prior art keywords
led lamp
switch element
led
string
groups
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CN2013101158200A
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CN103256512B (en
Inventor
林惠忠
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Lin Chunna
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SHENZHEN OPT-VALLEY NEW MATERIAL TECHNOLOGY Co Ltd
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Priority to CN201310115820.0A priority Critical patent/CN103256512B/en
Publication of CN103256512A publication Critical patent/CN103256512A/en
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Abstract

The invention provides an LED (light emitting diode) lamp. The LED lamp comprises at least one LED light string and a plurality of control units. The at least one LED light string comprise a plurality of LED lights which are arranged between driving voltage and reference voltage and separated into a plurality of LED light groups. Each of the control unit is electrically connected with one corresponding LED light group. When the LED light string is driven, the LED lights in the LED light string are lighted on at the same time. According to variation of the driving voltage, and via the controlling of a plurality of control units, the LED lights in the LED light string are separated into a plurality of LED light sub-strings, and the LED light sub-strings are parallelly connected. The size of load can be adjusted according to the driving voltage, so that power factor is improved.

Description

A kind of led lamp
Technical field
The invention relates to technical field of lamps, and particularly about a kind of led lamp.
Background technology
(light emitting diode, LED) characteristics such as, safety energy-conservation owing to it, long service life are widely used in field of light fittings to light emitting diode.
But the load of present LED light fixture can not change with the change of the driving voltage that provides of input power supply, thereby power factor is lower.
Therefore, be necessary to provide improved technical scheme to overcome the above technical problem that exists in the prior art.
Summary of the invention
The purpose of this invention is to provide a kind of can the variation with external input voltage and change self light emitting diode (light emitting diode, LED) load characteristic, and then can improve the led lamp of efficient and the power factor of diode artistic lamp.
(it comprises a string at least LED lamp string and a plurality of control module for light emitting diode, LED) light fixture to the invention provides a kind of light emitting diode.Described a string at least LED lamp string comprises a plurality of LED lamps that are connected between driving voltage and the reference voltage, and wherein, described a plurality of LED lamps are divided into a plurality of LED lamp groups.Between two adjacent LED lamp groups a control module is set.Wherein, when driving described LED lamp string, described a plurality of LED lamp groups in the described LED lamp string are lighted simultaneously, and the variation according to described driving voltage, control by described a plurality of control modules, described a plurality of LED lamps in the described LED lamp string are divided into a plurality of LED lamp strings, and described a plurality of LED lamp string is parallel with one another.
The invention provides a kind of LED light fixture, it comprises a string at least LED lamp string, a plurality of first switch element and a plurality of second switch element.Described a string at least LED lamp string comprises a plurality of LED lamps that are connected between driving voltage and the reference voltage, and wherein, described a plurality of LED lamps are divided into a plurality of LED lamp groups.Each first switch element is electrically connected between two previous LED lamp groups and described reference voltage in the adjacent LED lamp group.Each second switch element is electrically connected between the back LED lamp group and described driving voltage in described two adjacent LED lamp groups;
Wherein, when driving described LED lamp string, described a plurality of LED lamp groups in the described LED lamp string are lighted simultaneously, and the variation according to driving voltage, by controlling described a plurality of first switch element and described a plurality of second switch element, described a plurality of LED lamps in the described LED lamp string are divided into a plurality of LED lamp strings, and described a plurality of LED lamp string is parallel with one another.
The invention has the beneficial effects as follows, adopt the LED light fixture of the embodiment of the invention can adjust the size of load according to driving voltage, thereby improve power factor.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technology hand of the present invention end, and can be implemented according to the content of specification, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the module diagram of the led lamp of preferred embodiment of the present invention.
Fig. 2 is the structural representation of the led lamp of preferred embodiment of the present invention.
Fig. 3 is the structural representation of the led lamp of another embodiment of the present invention.
The specific embodiment
Reach technology hand end and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the specific embodiment, structure, feature and the effect thereof of the led lamp that foundation the present invention is proposed are described in detail as follows:
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of the specific embodiment, when can being to reach technology hand end and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, the present invention is limited.
Fig. 1 is the module diagram of the led lamp of preferred embodiment of the present invention.As shown in Figure 1, (light emitting diode, LED) light fixture comprises a string at least LED lamp string 10 and a plurality of control module 11 to light emitting diode.A plurality of control modules 11 are used for according to the variation of driving voltage Vin a plurality of LED lamps of LED lamp string 10 being divided into a plurality of LED parallel with one another lamp strings, and when driving LED lamp string 10, the LED lamp of a plurality of mutual series connection of LED lamp string 10 is lighted simultaneously.
Fig. 2 is the electrical block diagram of the led lamp as shown in Figure 1 of preferred embodiment of the present invention, as shown in Figure 2, LED lamp string 10 comprises a plurality of LED lamps that are connected between driving voltage Vin and the reference voltage Vref, and wherein, a plurality of LED lamps are divided into a plurality of LED lamp groups 101.Each control module 11 electrically connects respectively between two previous LED lamp groups and reference voltage Vref in the adjacent LED lamp group.In an embodiment of the present invention, the quantity of the 101 LED lamps that comprise is identical in each LED lamp group.
In an embodiment of the present invention, each control module 11 comprises the first switch element S1 and second switch element S2 respectively.In an embodiment of the present invention, second switch element S2 is electrically connected between the negative electrode and driving voltage Vin of last the LED lamp in the back LED lamp group 101 in two adjacent LED lamp groups, and the first switch element S1 is electrically connected between the anode and reference voltage Vref of last the LED lamp in the previous LED lamp group 101 in two adjacent LED lamp groups.Certainly, it will be understood by those skilled in the art that, second switch element S2 is electrically connected between the negative electrode and driving voltage Vin of the last a plurality of LED lamps in the back LED lamp group 101 in two adjacent LED lamp groups, and the first switch element S1 is electrically connected between the anode and reference voltage Vref of the last a plurality of LED lamps in the previous LED lamp group 101 in two adjacent LED lamp groups.
In one embodiment of this invention, the negative electrode of last a plurality of LED lamps refers to the negative electrode of last LED lamp in last a plurality of LED lamp, and the anode of last a plurality of LED lamps refers to the anode of first LED lamp in last a plurality of LED lamp.
In an embodiment of the present invention, when the first switch element S1 conducting, the previous LED lamp group 101 in two adjacent LED lamp groups directly is electrically connected to reference voltage Vref.When the second switch element conductive, the back LED lamp group in two adjacent LED lamp groups directly is electrically connected to driving voltage Vin.
In an embodiment of the present invention, each LED lamp group 101 comprises at least one the inverted diode D1 that is arranged between second switch element S2 and the first switch element S1.Inverted diode D1 is used for electrical isolation second switch element S2 and the first switch element S1.In one embodiment of the present invention, inverted diode D1 realizes by last the LED lamp in the previous LED lamp group 101 in two adjacent LED lamp groups 101.
In an embodiment of the present invention, each control module 11 further comprises at least one compensation LED lamp D2.Compensation LED lamp D2 is arranged between the previous LED lamp group 101 in the adjacent LED lamp group of the first switch element S1 and two, is used for the brightness of an inverted LED lamp D1 between compensation second switch element S2 and the first switch element S1.In an embodiment of the present invention, the number of the inversion LED lamp D1 in the number of the compensation LED lamp D2 that comprises of each control module 11 and the LED lamp group 101 is identical.Below, be that virtual value is the sine wave of the positive half period of 220V with driving voltage Vin, and led lamp 1 comprise a string LED lamp string 10, LED lamp string 10 comprises that 16 LED lamp groups 101 describe for example.Wherein, the LED lamp quantity in each LED lamp group 101 is identical.
It will be understood by those skilled in the art that, civil power generally is the alternating current of 220V, for light emitting diode 1 of the present invention, when using, it carries out at first that filtering filters out the voltage of negative half-cycle and the sine wave that keeps positive half period as driving voltage Vin, that is to say, driving voltage Vin be one at every moment at the voltage that changes, its virtual value is 220V.
As driving voltage Vin during lower first scope, at this moment, first switch element and the equal conducting of second switch element in the control module that all LED lamp groups 101 link to each other, therefore, LED lamp string 10 is divided into 16 LED parallel with one another lamp strings by control module, and namely each LED lamp group 101 is a LED lamp string.
And when driving voltage Vin rising, when slightly high second scope, at this moment, the first switch element S21, the first switch element S41, the first switch element S61, the first switch element S81, the first switch element S101, the first switch element S121, the first switch element S141, second switch element S22, second switch element S42, second switch element S62, second switch element S82, second switch element S102, second switch element S122, second switch element S142 conducting are only arranged.Therefore, LED lamp string 10 can be divided into 8 LED parallel with one another lamp strings, and namely per two LED lamp groups 101 have constituted a LED lamp string.
Raise again and work as driving voltage Vin, when higher the 3rd scope, at this moment, at this moment, the first switch element S41, the first switch element S81, the first switch element S121, second switch element S42, second switch element S82, second switch element S122 conducting are only arranged.Therefore, LED lamp string 10 can be divided into 4 LED parallel with one another lamp strings, and namely per four LED lamp groups 101 have constituted a LED lamp string.
When driving voltage further raises, when higher the 4th scope, at this moment, the first switch element S81 and second switch element S82 are only arranged, therefore, LED lamp string 10 is divided into 2 LED parallel with one another lamp strings, and namely per eight LED lamp groups 101 have constituted a LED lamp string.
Certainly, when driving voltage further raises again, when very high the 5th scope, because when the 4th scope, after LED lamp string is divided into 2 LED parallel with one another lamp strings, can not wait the littler sub-lamp string of proportion by subtraction 2 again, so LED lamp string 10 is that all LED lamps are cascaded and throw light on, be not divided into LED lamp string parallel with one another.
Fig. 3 is the structural representation of the LED light fixture of another embodiment of the present invention.In one embodiment of the present invention, the structure of the LED light fixture of Fig. 3 and operation principle are similar to structure and the operation principle of LED light fixture shown in Figure 2, and difference only is: compensation LED lamp D2 is arranged between the back LED lamp group 101 in the adjacent LED lamp group of second switch element S2 and two.
In sum, use the led lamp of preferred embodiment of the present invention owing to can a plurality of LED lamps in the LED lamp string 10 be divided into a plurality of LED parallel with one another lamp strings according to driving voltage Vin, thereby adjust the size of load, and then raise the efficiency and power factor.
The above, only be embodiments of the invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims (10)

  1. A light emitting diode (light emitting diode, LED) light fixture is characterized in that, comprising:
    At least a string LED lamp string, it comprises a plurality of LED lamps that are connected between driving voltage and the reference voltage, wherein, described a plurality of LED lamps are divided into a plurality of LED lamp groups;
    A plurality of control modules wherein, arrange a control module between two adjacent LED lamp groups;
    Wherein, when driving described LED lamp string, described a plurality of LED lamp groups in the described LED lamp string are lighted simultaneously, and the variation according to described driving voltage, control by described a plurality of control modules, described a plurality of LED lamps in the described LED lamp string are divided into a plurality of LED lamp strings, and described a plurality of LED lamp string is parallel with one another.
  2. 2. led lamp as claimed in claim 1 is characterized in that, each described control module comprises respectively:
    First switch element, be electrically connected between the previous LED lamp group and described reference voltage in described two adjacent LED lamp groups, wherein, when the described first switch element conducting, the previous LED lamp group in described two adjacent LED lamp groups directly is electrically connected to described reference voltage;
    The second switch element, be electrically connected between the back LED lamp group and described driving voltage in described two adjacent LED lamp groups, wherein, when described second switch element conductive, the back LED lamp group in described two adjacent LED lamp groups directly is electrically connected to described driving voltage;
    Wherein, by described first switch element and the described second switch element of controlling described control module, make the described a plurality of LED lamps in the described LED lamp string be divided into a plurality of LED parallel with one another lamp strings.
  3. 3. led lamp as claimed in claim 2, it is characterized in that, between the described second switch element and described first switch element in each control module, at least one inverted diode is set, thereby realizes the electrical isolation between described second switch element and described first switch element.
  4. 4. led lamp as claimed in claim 3, it is characterized in that, described at least one inverted diode that is arranged between described second switch element and described first switch element is realized by last at least one the LED lamp in the previous LED lamp group in described two adjacent LED lamp groups.
  5. 5. led lamp as claimed in claim 4, it is characterized in that, described second switch element is electrically connected at the negative electrode of last at least one the LED lamp in the previous LED lamp group in described two adjacent LED lamp groups, and described first switch element is electrically connected at the anode of last at least one the LED lamp in the previous LED lamp group in described two adjacent LED lamp groups.
  6. 6. led lamp as claimed in claim 5 is characterized in that, each control module further comprises:
    At least one compensation LED lamp is used for the brightness of described at least one the inverted LED lamp between the described second switch element of compensation and described first switch element.
  7. 7. led lamp as claimed in claim 6 is characterized in that, described at least one compensation LED lamp is arranged between described first switch element and described two the adjacent LED lamp groups.
  8. 8. led lamp as claimed in claim 1 is characterized in that, the quantity of the LED lamp that comprises in each described LED lamp group is identical.
  9. A light emitting diode (light emitting diode, LED) light fixture is characterized in that, comprising:
    At least a string LED lamp string, it comprises a plurality of LED lamps that are connected between driving voltage and the reference voltage, wherein, described a plurality of LED lamps are divided into a plurality of LED lamp groups;
    A plurality of first switch elements, wherein, each first switch element is electrically connected between two previous LED lamp groups and described reference voltage in the adjacent LED lamp group; And
    A plurality of second switch elements, wherein, each second switch element is electrically connected between the back LED lamp group and described driving voltage in described two adjacent LED lamp groups;
    Wherein, when driving described LED lamp string, described a plurality of LED lamp groups in the described LED lamp string are lighted simultaneously, and the variation according to driving voltage, by controlling described a plurality of first switch element and described a plurality of second switch element, described a plurality of LED lamps in the described LED lamp string are divided into a plurality of LED lamp strings, and described a plurality of LED lamp string is parallel with one another.
  10. 10. led lamp as claimed in claim 9, it is characterized in that, last at least one LED lamp in the previous LED lamp group in described two adjacent LED lamp groups, be upside down between a second switch element and adjacent first switch element, thereby realize electrical isolation between described second switch element and adjacent described first switch element.
CN201310115820.0A 2013-04-03 2013-04-03 A kind of LED lamp Expired - Fee Related CN103256512B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310115820.0A CN103256512B (en) 2013-04-03 2013-04-03 A kind of LED lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310115820.0A CN103256512B (en) 2013-04-03 2013-04-03 A kind of LED lamp

Publications (2)

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CN103256512A true CN103256512A (en) 2013-08-21
CN103256512B CN103256512B (en) 2015-09-23

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101932154A (en) * 2009-06-24 2010-12-29 连展科技（深圳）有限公司 Alternate current light emitting diode circuit for improving power factor
US20120262075A1 (en) * 2011-04-13 2012-10-18 Supertex, Inc. Multiple stage sequential current regulator
CN203162694U (en) * 2013-04-03 2013-08-28 深圳市光之谷新材料科技有限公司 LED (light emitting diode) lamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101932154A (en) * 2009-06-24 2010-12-29 连展科技（深圳）有限公司 Alternate current light emitting diode circuit for improving power factor
US20120262075A1 (en) * 2011-04-13 2012-10-18 Supertex, Inc. Multiple stage sequential current regulator
CN203162694U (en) * 2013-04-03 2013-08-28 深圳市光之谷新材料科技有限公司 LED (light emitting diode) lamp

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Effective date of registration: 20180425

Address after: 518100 1413 room 19, Bi Hu Hao Yuan, Central District, Longgang, Shenzhen, Guangdong.

Patentee after: Lin Chunna

Address before: 518000 B 2118-2119, Southeast Plaza, Sanxia street, Futian District, Shenzhen, Guangdong.

Patentee before: Shenzhen Opt-Valley New Material Technology Co., Ltd.

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: 20150923

Termination date: 20210403