CN201391844Y

CN201391844Y - Parallel luminous circuit of parallel LED luminous device

Info

Publication number: CN201391844Y
Application number: CN200920035211U
Authority: CN
Inventors: 林宏; 黄梅枝
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-11
Filing date: 2009-03-11
Publication date: 2010-01-27
Anticipated expiration: 2019-03-11

Abstract

The utility model discloses a parallel luminous circuit of a parallel LED luminous device. The a parallel luminous circuit comprises a DC power supply terminal seat and a plurality of LED assemblies, wherein the DC power supply terminal seat is provided with two power supply terminals; one end of each first circuit with the number being corresponding to that of the LED assemblies is connected with one end of each LED assembly, and the other end thereof is connected with one power supply terminal of the DC power supply terminal seat; one end of each second circuit with the number being corresponding to that of the LED assemblies is connected with the other end of each LED assembly, and the other end thereof is connected with the other power supply terminal of the DC power supply terminal seat; a plurality of first increased current circuits are arranged, and the arranged first circuits are connected with each other by the first increased current circuits; a plurality of second increased current circuits are arranged, and the arranged second circuits are connected with each other by the second increased current circuits.

Description

The illuminating circuit in parallel of parallel LED light-emitting device

Technical field

The utility model relates to a kind of LED illuminating circuit, especially a kind of illuminating circuit in parallel of LED light-emitting device.

Background technology

Because LED has the advantage of low-power high brightness, the initial stage a large amount of as indication with outside the lamp, be widely used in illuminator lamp in the recent period, all as seen reach the LED assembly just as the illuminating products such as backlight module, flashlight or desk lamp of liquid crystal flat panel display.

Because illuminator lamp must provide stable and uniform bright dipping briliancy, with liquid crystal flat panel display, what the big area of plane must be provided evenly goes out brightness, so the composition structure of the LED-backlit module of its use is quite complicated, generally include LED assembly, LGP, blast sheet, diffusion barrier, rhombus lens etc., could be effectively LED light be constituted one and all bright go out optical plane.Yet, for the other products that uses backlight module at present equally, be not strict with the bright dipping briliancy uniformity of its planar light source, but still see that the LED assembly has the advantage of low-power high brightness, and directly use the light emitting source of some LED assemblies as backlight module, so that planar light source to be provided, the circuit design of using with LED-backlit module or lighting device at present generally is divided into connection in series-parallel in conjunction with illuminating circuit 50 (as shown in Figure 2) and illuminating circuit in parallel 70 (as shown in Figure 3), general dc source enters by circuit board one side, make that to be abound with the brightness near apart from power supply of on the backlight module plane LED assembly ratio far away apart from power supply low, present the shortcoming that brightness differs.

Summary of the invention

In order to overcome above-mentioned defective, the utility model provides a kind of illuminating circuit in parallel of parallel LED light-emitting device, has both had the advantage of low-power high brightness, can reach the uniform effect of each LED assembly luminosity again.

The utility model for the technical scheme that solves its technical problem and adopt is:

A kind of illuminating circuit in parallel of parallel LED light-emitting device, comprise dc power supply terminal stroma and several LED assemblies, this dc power supply terminal stroma is provided with two power supply terminals, be connected LED assembly one end with first circuit, one end of LED assembly respective amount, each first circuit other end connects a power supply terminal of dc power supply terminal stroma, be connected the LED assembly other end with second circuit, one end of LED assembly respective amount, each second circuit other end connects another power supply terminal of dc power supply terminal stroma, so just makes all LED assemblies parallel with one another to this dc power supply terminal stroma; Be provided with the some first incremental circuit, some first circuits of each of setting are by each first incremental circuit and connect, and are provided with the some second incremental circuit, and some second circuits of each of setting are by each second incremental circuit and connect, thereby improve the electric current of each LED assembly of setting.

Further technical scheme of the present utility model is:

First and second circuit that is connected away from several LED assemblies of dc power supply terminal stroma is crossed first and second incremental circuit with first and second link tester that is connected near at least one the LED assembly in several LED assemblies of dc power supply terminal stroma and is connect.

Each first and second link tester that each LED assembly is connected is crossed each first and second incremental circuit and is formed connected with each other.

Several LED assemblies are matrix and arrange, form horizontal group of LED row group and LED, each first and second circuit that each LED assembly in each LED row group is connected is first and second incremental circuit and connecing by each all, and each first and second circuit that each the LED assembly among horizontal group of each LED is connected is first and second incremental circuit and connecing by each all.

The positive source of a power supply terminal of described dc power supply terminal stroma, another power supply terminal of dc power supply terminal stroma is a power cathode.

The beneficial effects of the utility model are: by the design of first and second incremental circuit, effectively improved the operating current of LED assembly, thereby the operating current that makes the LED assembly far away apart from power supply can be because of the line resistance not reduce greatly, makes that each LED assembly luminosity is evenly distributed in the circuit.

Description of drawings

Fig. 1 is the circuit diagram of the utility model first embodiment;

Fig. 2 is that the original technology connection in series-parallel of the utility model is in conjunction with the illuminating circuit schematic diagram;

Fig. 3 is the original technology of a utility model illuminating circuit schematic diagram in parallel.

The specific embodiment

Embodiment: a kind of illuminating circuit in parallel of parallel LED light-emitting device, comprise dc power supply terminal stroma 12 and several LED assemblies 11, this dc power supply terminal stroma is provided with two power supply terminals, be connected LED assembly one end with first circuit, 13 1 ends of LED assembly respective amount, each first circuit other end connects a power supply terminal of dc power supply terminal stroma, be connected the LED assembly other end with second circuit, 14 1 ends of LED assembly respective amount, each second circuit other end connects another power supply terminal of dc power supply terminal stroma, so just makes all LED assemblies parallel with one another to this dc power supply terminal stroma; Be provided with the some first incremental circuit 15, each some first circuit 13 of setting are by each first incremental circuit and connect, be provided with the some second incremental circuit 16, some second circuits 14 of each of setting are by each second incremental circuit and connect, thereby improve the electric current of each LED assembly of setting.

First and

second circuit

13,14 that is connected away from several LED assemblies 11 of dc power supply terminal stroma 12 is crossed first and second

incremental circuit

15,16 with first and second link tester that is connected near at least one the LED assembly in several LED assemblies of dc power supply terminal stroma 12 and is connect.

First and second

incremental circuit

15,16 forms connected with each other each first and

second circuit

13,14 that each LED assembly is connected by each.

Several LED assemblies are matrix and arrange, form horizontal group of LED row group and LED, each first and

second circuit

13,14 that each LED assembly in each LED row group is connected is first and second

incremental circuit

15,16 and connecing by each all, and each first and

second circuit

13,14 that each the LED assembly among horizontal group of each LED is connected is first and second

incremental circuit

15,16 and connecing by each all.

During concrete enforcement, the anodal circuit of the utility model and negative pole circuit can be divided into the two sides of printed substrate, and by being used to the join positive and negative end of LED of hole realization positive and negative electrode on the printed substrate, this is a prior art then, and this example no longer describes in detail.

The utility model can be used in a fairly large number of lighting devices of LED such as the illumination of each keyboard under the computor-keyboard (each keyboard is divided into a LED) or LED display.

Claims

1, a kind of illuminating circuit in parallel of parallel LED light-emitting device, it is characterized in that: comprise dc power supply terminal stroma (12) and several LED assemblies (11), this dc power supply terminal stroma is provided with two power supply terminals, be connected LED assembly one end with first circuit (13) one ends of LED assembly respective amount, each first circuit other end connects a power supply terminal of dc power supply terminal stroma, be connected the LED assembly other end with second circuit (14) one ends of LED assembly respective amount, each second circuit other end connects another power supply terminal of dc power supply terminal stroma; Be provided with the some first incremental circuit (15), some first circuits of each of setting (13) are by each first incremental circuit and connect, and are provided with the some second incremental circuit (16), and some second circuits of each of setting (14) are by each second incremental circuit and connect.

2, the illuminating circuit in parallel of parallel LED light-emitting device according to claim 1 is characterized in that: first and second circuit (13,14) that is connected away from several LED assemblies (11) of dc power supply terminal stroma (12) is crossed first and second incremental circuit (15,16) with first and second link tester that is connected near at least one the LED assembly in several LED assemblies of dc power supply terminal stroma (12) and is connect.

3, the illuminating circuit in parallel of parallel LED light-emitting device according to claim 1 is characterized in that: each first and second circuit (13,14) that each LED assembly is connected forms connected with each other by each first and second incremental circuit (15,16).

4, according to the illuminating circuit in parallel of claim 1,2 or 3 described parallel LED light-emitting devices, it is characterized in that: several LED assemblies are matrix and arrange, form horizontal group of LED row group and LED, each first and second circuit (13,14) that each LED assembly in each LED row group is connected is first and second incremental circuit (15,16) and connecing by each all, and each first and second circuit (13,14) that each the LED assembly among horizontal group of each LED is connected is first and second incremental circuit (15,16) and connecing by each all.

5, the illuminating circuit in parallel of parallel LED light-emitting device according to claim 1 and 2 is characterized in that: the positive source of a power supply terminal of described dc power supply terminal stroma, another power supply terminal of dc power supply terminal stroma is a power cathode.