CN201391845Y - LED circuit and LED illuminating device with same - Google Patents
LED circuit and LED illuminating device with same Download PDFInfo
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- CN201391845Y CN201391845Y CN200920053741U CN200920053741U CN201391845Y CN 201391845 Y CN201391845 Y CN 201391845Y CN 200920053741 U CN200920053741 U CN 200920053741U CN 200920053741 U CN200920053741 U CN 200920053741U CN 201391845 Y CN201391845 Y CN 201391845Y
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Abstract
The utility model relates to the illumination field, and discloses a LED circuit and a LED illuminating device with the same. The LED circuit comprises power supply electrodes and a light-emitting diode matrix electrically connected between the power supply electrodes, wherein the light-emitting diode matrix is formed by connecting m light-emitting diode series groups in parallel; each light-emitting diode series group is formed by connecting n light-emitting diodes in series; and a resistance Rij is electrically connected between the cathode of the ith line and jth row of light-emitting diode and the cathode of the ith line and (j+1)th row of light-emitting diode in the light-emitting diode matrix. By applying the circuit, the situation that other light-emitting diodes are off due to the damage of any light-emitting diode can be avoided.
Description
Technical field
The utility model relates to lighting field, relates in particular to a kind of led circuit, with the LED lighting device of this circuit.
Background technology
Advantages such as the LED lighting device is low owing to its energy consumption, environmental protection are widely used day by day.The LED lighting device is arranged on the circuit board and is formed by a plurality of light emitting diodes (light-emitting diode is called for short LED).
Syndeton is as shown in Figure 1 adopted in the connection of each LED in the LED lighting device at present usually: each LED employing string-and be formed by connecting.Its connection is specific as follows:
The input power supply 101,102 between and be connected with m series connection group, each series connection group is made up of n LED.Under the normal power supply state, input voltage V0 is added on each series connection group, and electric current flows through from each series connection group, gives each LED power supply, and each LED is luminous and realize illumination.
But, adopt syndeton shown in Figure 1, when wherein some LED damages and can not be luminous the time, the circuit of its place series connection group disconnects, and causes all the LED cisco unity malfunctions in this series connection group, on the LED lighting device, show as one section dark space, influence user's use experience greatly.
And, when causing the circuit disconnection of this series connection group when the LED of a certain series connection group damage, because the supply voltage V0 of power supply is constant, the former electric current that should flow through this series connection group is divided to other series connection group, causes the electric current of other series connection groups to strengthen greatly, makes the power of each LED of other series connection groups substantially exceed its specified power, the long-term use, make it be more prone to damage service life that can infringement LED, thus form pernicious follow bad.
Damage and cause all LED in the series connection group at its place can not normally shinny problem in order to overcome certain LED in the LED lighting device, people have proposed another kind of LED syndeton, this syndeton as shown in Figure 2:
Structure shown in Figure 2 is with respect to syndeton shown in Figure 1, and institute's difference is:
At the two ends of each light emitting diode Dmn breakdown diode dmn in parallel, when certain LED damages, the breakdown diode dmn in parallel with it is owing to the effect of both end voltage punctures, this breakdown diode dmn is communicated with, electric current is flow through from this breakdown diode dmn, make this series connection group continue to have electric current to flow through, other LED in this series connection group continue luminous.
When certain LED damages, on the LED lighting device, show as a dim spot rather than one section dark space.
As seen use syndeton shown in Figure 2, can solve certain LED and damage and cause all LED in the series connection group at its place can not normally shinny problem, user's result of use be preferable.
But, use structure shown in Figure 2, need be each LED breakdown diode in parallel, part and manufacturing cost are higher, are unfavorable for promoting on industry.
The utility model content
The utility model embodiment provides a kind of led circuit, uses this circuit and can avoid certain LED to damage and the situation that causes other LED not work.
The utility model embodiment also provides a kind of LED lighting device, and this LED lighting device can avoid certain LED to damage and the situation that causes other LED not work.
A kind of led circuit that the utility model embodiment provides comprises: current electrode and be connected electrically in dot matrix LEDs between the described current electrode,
Wherein, described dot matrix LEDs is formed in parallel by m light emitting diode string joint group, and described each light emitting diode string joint group is formed by n light emitting diode series connection, and wherein, m, n are respectively and are not less than arbitrary natural number of 2;
In described dot matrix LEDs, between the negative pole of the light emitting diode that the negative pole and the i capable (j+1) of the light emitting diode that the capable j of each i is listed as are listed as, be electrically connected with resistance R ij,
Wherein i is more than or equal to 1 each natural number less than m, and j is more than or equal to 1 each natural number less than n.
Alternatively, the resistance value of described each Rij is identical.
Alternatively, in described dot matrix LEDs, also be electrically connected with resistance R _ f between the negative pole of the light emitting diode that the negative pole and the capable m of f of the light emitting diode that described f the capable the 1st is listed as are listed as, wherein f is natural number, 1≤f＜n.
Alternatively, described each Rf is identical with the resistance value of described each Rij.
Alternatively, described m, n are 6.
A kind of LED lighting device that the utility model embodiment provides comprises above-mentioned any led circuit.
Therefore, use the technical scheme of the utility model embodiment, because this circuit is electrically connected with resistance R ij between the negative pole of LED Lij and Li (j+1), so when any one LED Lij is impaired, the LED Li (j+1) that is electrically connected with this impaired LEDLij can obtain electric current from resistance R ij, make that LED Li (j+1) and other LED are normally shinny.So use this LED connecting circuit, can avoid certain LED to damage and the situation that causes other LED not work.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, does not constitute to improper qualification of the present utility model, in the accompanying drawings:
Fig. 1 is the syndeton schematic diagram of a kind of LED lighting device of the prior art;
Fig. 2 is the syndeton schematic diagram of another kind of LED lighting device of the prior art;
The circuit theory schematic diagram of a kind of led circuit that Fig. 3 provides for the utility model embodiment 1;
Fig. 4 is the circuit theory schematic diagram of the LED matrix among the utility model embodiment 1 Fig. 1;
Fig. 5 is in the utility model embodiment 1, the circuit theory schematic diagram of the another kind of led circuit that provides;
The circuit theory schematic diagram of a kind of led circuit of providing in the utility model embodiment 2 is provided Fig. 6.
The specific embodiment
Describe the utility model in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the utility model in this illustrative examples of the present utility model and explanation, but not as to qualification of the present utility model.
Embodiment 1:
The circuit theory schematic diagram of a kind of led circuit that Fig. 3 provides for present embodiment.Referring to shown in Figure 3, the circuit of the LED of present embodiment mainly comprises current electrode (anodal VCC+ and negative pole VCC-), between current electrode, be electrically connected with dot matrix LEDs shown in Figure 4 (hereinafter to be referred as the LED matrix), this LED matrix is formed in parallel by m LED series connection group, wherein each LED series connection group is formed by n light emitting diode series connection, constitutes the LED matrix that a m is listed as, n is capable by m*n LED.
Wherein m, n are respectively and are not less than arbitrary natural number of 2, are such as but not limited to referring to shown in Figure 3, and m, n can be respectively 6, form the LED matrix of a 6*6 who is made up of 36 LED.
Referring to shown in Figure 3, in LED matrix as shown in Figure 4, also be electrically connected with the individual resistance R ij of (m-1) * (n-1): each Rij be connected electrically in respectively the light emitting diode Lij in the dot matrix LEDs negative pole, and the negative pole of light emitting diode Li (j+1) between.
The operation principle of led circuit shown in Figure 3 is, as certain LED L
IjWhen damaging (i.e. the LED open circuit of the capable j row of i), be connected LED L
IjThe resistance R ij at negative pole place can from (j+1) row be diverted to electric current, with this electric current from LED L
(i+1) j(i.e. the LED of (i+1) row j row) input, with LED to the j row, the LED L that other LED that makes this j be listed as can not be damaged
IjInfluence and continue operate as normal.
Wherein above-mentioned i is for more than or equal to 1 each natural number smaller or equal to (m-1), and j is for more than or equal to 1 each natural number smaller or equal to (n-1).
Below have electric current to flow through with LED L11, L12, L13, L14, the complete impaired only L16 of L15 to be example, present embodiment led circuit principle is done further explanation:
When LED L11, L12, L13, L14, L15 are complete when impaired, the electric current that flows through LED L16 divides and flows into: resistance R 15, LED L26 (lighting LED L26, L36, L46, L56, L66);
The electric current that flows into resistance R 15 divides inflow R14, LED L25 (lighting LED L25, L35, L45, L55, L65);
The electric current that flows into resistance R 14 divides inflow R13, LED L24 (lighting LED L24, L34, L44, L54, L64);
The electric current that flows into resistance R 13 divides inflow R12, LED L23 (lighting LED L23, L33, L43, L53, L63);
The electric current that flows into resistance R 12 divides inflow R11, LED L22 (lighting LED L22, L32, L42, L52, L62);
The electric current that flows into resistance R 11 divides inflow R11, LED L21 (lighting LED L21, L31, L41, L51, L61).
When other LED was impaired, the situation of electric current shunting can not given unnecessary details at this one by one with reference to above analysis.
Therefore, owing between the negative pole of every light emitting diode Lij and Li (j+1), be electrically connected with resistance R ij, so when any one LED Lij was impaired, the arbitrary LED that is connected this LED Lij negative pole all can obtain electric current by resistance R ij, and normally shinny.So use the led circuit of present embodiment, can avoid the situation that causes other LED in the circuit not work owing to a certain LED is impaired.
In addition, in the present embodiment, between the negative pole of every light emitting diode Lij and Li (j+1), be electrically connected a resistance R ij, rather than lead (referring to shown in Figure 5), because when adopting circuit shown in Figure 5, when LED too much in certain delegation is normal when shinny, the electric current that is increased on LED of other row will increase greatly, make the electric current that flows through these LED substantially exceed its rated current, cause its illumination effect not good enough, life-span is impaired comparatively severe, damage very fast, and then can cause vicious circle.
And using led circuit shown in Figure 3, the resistance R ij that is connected electrically between each row can share certain electric current, slows down the electric current that is increased to owing to some LED is impaired on other LED relatively.So it is impaired and to the adverse effect that other LED brings, help guaranteeing the illumination effect of int LED to use led circuit that present embodiment Fig. 3 provides can also alleviate some LED with respect to circuit shown in Figure 5, prolongs the service life of int LED.
To sum up, in the LED lighting device, use the led circuit of present embodiment, can avoid certain LED to damage and the situation that causes other LED not work, help guaranteeing the illumination effect of int LED, prolong its life-span.
Embodiment 2:
The circuit theory schematic diagram of a kind of led circuit that Fig. 6 provides for present embodiment, the led circuit difference among the circuit of present embodiment and the embodiment 1 is:
In the LED of present embodiment matrix, for every row: between the negative pole of light emitting diode L1f, the Lmf of first and terminal column, also be electrically connected with resistance R _ f.
Wherein above-mentioned f is for counting each natural number of n more than or equal to 1 less than the LED matrix column.
Below have electric current to flow through with LED L11, L12, L13, L14, the complete impaired only L16 of L15 to be example, present embodiment led circuit principle is done further explanation:
Suppose that LED L11, L12, L13, L14, L15 are complete when impaired:
The electric current that flows through LED L16 divides inflow: resistance R 1, resistance R 15, LED L26 (lighting LEDL26, L36, L46, L56, L66); Flow to the LED of each row again by resistance R 1, R15 respectively, light the LED of each row.
Therefore, when the LED Lij of only first (or only terminal column) is intact, electric current can flow directly to the LED of terminal column (or first) by the resistance between the LED that is connected head (or terminal column), equally need through a plurality of resistance R ij, Ri (j-1), Ri (j-2) and need not as shown in Figure 3 circuit ... Ri1 could arrive terminal column (or first), as seen, use led circuit figure shown in Figure 6 can guarantee when LED Lij is impaired, the electric current of LED that flows through each row by resistance is comparatively even, makes with the illumination effect of the LED lighting device of this led circuit more even.
To sum up, use present embodiment led circuit schematic diagram shown in Figure 6 except realizing the function of the schematic diagram shown in the embodiment 1, the situation that promptly can avoid certain LED to damage and cause other LED not work helps guaranteeing prolonging the illumination effect of int LED outside its life-span; It is comparatively even that the led circuit of using present embodiment can also guarantee to flow through the electric current that respectively is listed as LED, makes that the illumination effect of the LED lighting device that comprises this led circuit is comparatively even.
More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the embodiment of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (6)
1, a kind of led circuit is characterized in that, comprising: current electrode and be connected electrically in dot matrix LEDs between the described current electrode,
Wherein, described dot matrix LEDs is formed in parallel by m light emitting diode string joint group, and described each light emitting diode string joint group is formed by n light emitting diode series connection, and wherein, m, n are respectively and are not less than arbitrary natural number of 2;
In described dot matrix LEDs, between the negative pole of the light emitting diode that the negative pole and the i capable (j+1) of the light emitting diode that the capable j of each i is listed as are listed as, be electrically connected with resistance R ij,
Wherein i is more than or equal to 1 each natural number less than m, and j is more than or equal to 1 each natural number less than n.
2, led circuit according to claim 1 is characterized in that, the resistance value of described each Rij is identical.
3, led circuit according to claim 1 is characterized in that,
In described dot matrix LEDs, between the negative pole of the light emitting diode that the negative pole and the capable m of f of the light emitting diode that described f the capable the 1st is listed as are listed as, also be electrically connected with resistance R _ f, wherein f is natural number, 1≤f≤n.
4, led circuit according to claim 3 is characterized in that, described each Rf is identical with the resistance value of described each Rij.
5, according to claim 1,2 or 3 described led circuits, it is characterized in that described m, n are 6.
6, a kind of cum rights profit requires the LED lighting device of 1,2 or 3 described led circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920053741U CN201391845Y (en) | 2009-03-31 | 2009-03-31 | LED circuit and LED illuminating device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920053741U CN201391845Y (en) | 2009-03-31 | 2009-03-31 | LED circuit and LED illuminating device with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391845Y true CN201391845Y (en) | 2010-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920053741U Expired - Fee Related CN201391845Y (en) | 2009-03-31 | 2009-03-31 | LED circuit and LED illuminating device with same |
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| CN (1) | CN201391845Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297402A (en) * | 2011-08-29 | 2011-12-28 | 陈志明 | Matrix type LED (light-emitting diode) light source circuit board |
| CN103839974A (en) * | 2014-03-12 | 2014-06-04 | 四川虹视显示技术有限公司 | WOLED, WOLED manufacturing method and WOLED driving method |
| CN106409163A (en) * | 2016-08-30 | 2017-02-15 | 四川行之智汇知识产权运营有限公司 | Light emitting assembly system adaptive to old frames |
| CN106531058A (en) * | 2016-08-30 | 2017-03-22 | 四川行之智汇知识产权运营有限公司 | PX3 model luminous drive system |
| CN106531057A (en) * | 2016-08-30 | 2017-03-22 | 四川行之智汇知识产权运营有限公司 | PX2-model luminescent driving system |
-
2009
- 2009-03-31 CN CN200920053741U patent/CN201391845Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297402A (en) * | 2011-08-29 | 2011-12-28 | 陈志明 | Matrix type LED (light-emitting diode) light source circuit board |
| CN103839974A (en) * | 2014-03-12 | 2014-06-04 | 四川虹视显示技术有限公司 | WOLED, WOLED manufacturing method and WOLED driving method |
| CN103839974B (en) * | 2014-03-12 | 2016-05-25 | 四川虹视显示技术有限公司 | WOLED, WOLED preparation method and WOLED driving method |
| CN106409163A (en) * | 2016-08-30 | 2017-02-15 | 四川行之智汇知识产权运营有限公司 | Light emitting assembly system adaptive to old frames |
| CN106531058A (en) * | 2016-08-30 | 2017-03-22 | 四川行之智汇知识产权运营有限公司 | PX3 model luminous drive system |
| CN106531057A (en) * | 2016-08-30 | 2017-03-22 | 四川行之智汇知识产权运营有限公司 | PX2-model luminescent driving system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chongqing Zhuohui Lighting Co., Ltd. Zhang Minghong Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Zhang Minghong Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20120331 |