CN203421644U

CN203421644U - LED circuit board

Info

Publication number: CN203421644U
Application number: CN201320384526.5U
Authority: CN
Inventors: 吴远敏; 杜爱琼
Original assignee: Shanghai Xinyao Electronics Co Ltd
Current assignee: Shanghai Xinyao Electronics Co Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2014-02-05
Anticipated expiration: 2023-06-28

Abstract

The utility model provides an LED circuit board which comprises a cross array formed by sequential series connection of more than two LED parallel-connection groups. A direct-current source or an alternating-current source can be used as a power supply source. Through the connection mode, the situation that a whole LED system fails in an open-circuited mode or in a short-circuited mode due to the fact that some LED is damaged because of voltage fluctuation or current fluctuation can be effectively avoided, meanwhile the phenomenon of uneven brightness caused by intrinsic difference of the LEDs during light emitting can be removed, and therefore the light-emitting effect of the LEDs is made to be more ideal.

Description

A kind of LED wiring board

Technical field

The utility model relates to a kind of circuit board, particularly relates to the wiring board of a kind of LED.

Background technology

Present LED product is more and more, and the fluctuation because of voltage or electric current sometimes causes indivedual LED to be broken, thereby makes whole LED thrashing open circuit or short circuit.Be subject in addition the restriction of LED manufacturing technology, LED exists certain luminance difference in its performance, makes LED illumination effect of brightness irregularities or LED when luminous undesirable.

Summary of the invention

The shortcoming of prior art in view of the above, the purpose of this utility model is to provide the wiring board of a kind of LED, for solving prior art and cause because of the damage of indivedual LED the lost efficacy problem of open circuit or short circuit of whole LED circuit, and because LED individual difference causes the phenomenon of non-uniform light.

For achieving the above object and other relevant objects, the utility model provides a kind of LED wiring board, comprise: circuit board and be laid on described circuit board and connect the LED array of external communication or dc source, comprise a plurality of and joint group, respectively should and joint group comprise a plurality of LED that are connected in parallel, and described a plurality of and joint group is connected in series successively.

Preferably, described and joint group is comprised of 5 LED in parallel, and the described and joint group of series connection is 3.

As mentioned above, a kind of LED wiring board of the present utility model, has following beneficial effect:

Reduce fault rate, improved the luminous reliability of LED, met the driving coupling requirement of the driver matching with LED simultaneously, thereby effectively avoided the non-uniform light phenomenon of LED group.

Accompanying drawing explanation

Fig. 1 is shown as LED conspectus of the present utility model.

Fig. 2 is shown as the electrical block diagram of the middle LED array of LED wiring board of the present utility model.

Element numbers explanation

1 positive source

2 power cathodes

3 circuit boards

4 LED luminous tubes

The specific embodiment

By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this description.

Notice, appended graphic the illustrated structure of this description, ratio, size etc., equal contents in order to coordinate description to disclose only, for person skilled in the art scholar, understand and read, not in order to limit the enforceable qualifications of the utility model, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under the effect that the utility model can produce and the object that can reach, all should still drop on the technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, in this description, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under without essence change technology contents, when being also considered as the enforceable category of the utility model.

Refer to Fig. 1, be shown as the structural representation of LED wiring board of the present utility model, as shown in the figure, the utility model provides a kind of LED wiring board, be applied in systems such as automotive lighting, street lighting or Landscape Lighting, described LED wiring board comprises circuit board 1 and LED array 2.

Described LED array 2 is laid on described circuit board 1, and described LED array 2 connects external communication or dc sources, and it comprises a plurality of and joint group, respectively should and joint group comprise a plurality of LED that are connected in parallel, and described a plurality of and joint group is connected in series successively.

In the present embodiment, described and joint group is comprised of 5 LED in parallel, described and the joint group of series connection is 3, refer to Fig. 2, be shown as the electrical block diagram of the middle LED array of LED wiring board of the present utility model, as shown in the figure, 3 and joint group 21 of series connection, 22, and distribute and comprise 5 LED(D1～D5 that are connected in parallel in 23, D2～D10, and D11～D15), each is joint group 21 also, 22, or 23 all public same input and output, so design, even if wherein certain group has a LED or two LED inefficacies to open a way or short circuit, still can guarantee to have at least a LED to work, thereby can greatly improve every group of reliability that LED is luminous, reduce fault rate, also can improve the luminous overall reliability of whole LED circuit.By above-mentioned matching connection mode, can make the electric current of every LEDs adjustable alone, guarantee that the electric current flow through each LED is in its claimed range, thereby guaranteeing that LED array is luminous reaches certain uniformity.

In sum, the crossed array connected mode that the utility model is connected successively by a plurality of LED joint group, described connected mode can effectively be avoided voltage or current fluctuation and cause indivedual LED to be broken, thereby the situation of avoided whole individual LED thrashing open circuit or short circuit, in the time of can also solving luminous that the intrinsic difference of LED self brings, brightness irregularities phenomenon, makes the illumination effect of LED more desirable simultaneously.So the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.

Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.

Claims

1. a LED wiring board, is characterized in that, comprising:

Circuit board;

LED array, is laid on described circuit board and connects external communication or dc source, comprises a plurality of and joint group, respectively should and joint group comprise a plurality of LED that are connected in parallel, and described a plurality of and joint group is connected in series successively.

2. LED wiring board according to claim 1, is characterized in that: described and joint group is comprised of 5 LED in parallel, and the described and joint group of series connection is 3.