A kind of LED Down lamp
Technical field
The utility model is about lighting field, relates in particular to a kind of LED Down lamp.
Background technology
Existing LED(Light-Emitting Diode, light emitting diode, being called for short LED) driving power of Down lamp is all external, lamp plate is what to separate with drive electric power unit, and this just causes assembly cost higher, and, existing LED Down lamp power acquisition conventional linear power supply, conventional linear power supply, constant current accuracy is not high, the easy stroboscopic of whole lamp.
Therefore, be necessary present technology to do further improvement.
Utility model content
The purpose of this utility model is to overcome the defect of prior art, and the LED Down lamp of a kind of lamp plate and driving power integrated setting is provided, and it is simple in structure, easy to assembly, cost is low, and whole lamp is without stroboscopic, and the brightness of lamp is not with voltage change.
For reaching aforementioned object, the utility model LED Down lamp, it comprises lamp body, is arranged on the lamp plate in described lamp body, the driving power that is fixed on several LED lamp pearls on described lamp plate and is connected with described LED lamp pearl, and described driving power is arranged on described lamp plate.
As preferred embodiment of the utility model, described driving power is Switching Power Supply.
As preferred embodiment of the utility model, when described LED lamp pearl is arranged on lamp plate, on described lamp plate, described LED lamp pearl circular array.
As preferred embodiment of the utility model, described driving power is electrically connected with external power source.
As preferred embodiment of the utility model, described driving power is welded on described lamp plate, on described lamp plate, conductive traces is installed, and described driving power is realized and being electrically connected by the conductive traces on described lamp plate with described LED lamp pearl.
As preferred embodiment of the utility model, the drive circuit of described driving power comprises input circuit, rectifier circuit, drive IC, resistance, electric capacity, step-down transformer and illuminating circuit, described input circuit is electrically connected with described rectifier circuit, described rectifier circuit is electrically connected with described drive IC by resistance and electric capacity, and described drive IC is electrically connected with described illuminating circuit.
As preferred embodiment of the utility model, the alternating current that the input voltage of described drive circuit is 180-240V.
As preferred embodiment of the utility model, described drive IC is DU8618.
As preferred embodiment of the utility model, the LED lamp pearl that described illuminating circuit is several series connection.
The beneficial effects of the utility model: compared with prior art, LED Down lamp of the present utility model, by integrated to driving power and lamp plate, be convenient to assembling and automated production, cost-saving, and driving power of the present utility model is Switching Power Supply, and this just makes the brightness of described LED Down lamp not change with the variation of voltage, this drive circuit constant current accuracy is higher, and LED Down lamp is without stroboscopic phenomenon.
Brief description of the drawings
Fig. 1 is the lamp plate wiring diagram of the utility model LED Down lamp;
Fig. 2 is the structural representation of the lamp plate of the utility model LED Down lamp;
Fig. 3 is the driving circuit principle figure of the utility model LED Down lamp.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Alleged " embodiment " or " embodiment " refers to special characteristic, structure or the characteristic that can be contained at least one implementation of the utility model herein.Different local in this manual " in one embodiment " that occur not all refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiment optionally.
Refer to Fig. 1 and Fig. 2, Fig. 1 is the lamp plate wiring diagram of the utility model LED Down lamp.Fig. 2 is the structural representation of the lamp plate of the utility model LED Down lamp.Described LED Down lamp comprises lamp body (not shown), lamp plate (pcb board) 100, LED lamp pearl 200 and driving power.
Described lamp plate 100 is arranged in described lamp body, is fixedly connected with LED lamp pearl 200 on it.Described driving power is welded on described lamp plate 100, and described driving power one end is electrically connected with described LED lamp pearl 200, and the other end is connected with external power source (not shown) by wire.On described lamp plate 100, be furnished with conductive traces 110, described driving power is realized and being electrically connected by the conductive traces 110 on lamp plate 100 with described LED lamp pearl 200.In this embodiment, described conductive traces 110 is copper base, and in other embodiments, this conductive traces 110 can also be the substrate of other materials.The arrangement mode of conductive traces described in the utility model can be determined according to actual conditions.
Described LED lamp pearl 200, it is fixed on described lamp plate 100.In this embodiment, the quantity of described LED lamp pearl 200 is several, when these several LED lamp pearls 200 are arranged on lamp plate, and on described lamp plate 100, described LED lamp pearl 200 circular array.In this embodiment, described LED lamp pearl 200 is arranged as five loop configuration on lamp plate 100, LED lamp pearl 200 in each loop configuration is connected, and, between adjacent annular structure, be also connected in series, in other embodiments, described LED lamp pearl 200 is arranged as at least one loop configuration on lamp plate 100, LED lamp pearl 200 in each loop configuration is connected, and, between adjacent annular structure, be also connected in series.In another embodiment, the loop configuration of the arrangement of described LED lamp pearl 200 on lamp plate 100 is at least one, and the LED lamp pearl 200 in each loop configuration is connected, and between adjacent annular structure, also can be connected in parallel.In the utility model, the arrangement mode of described LED lamp pearl 200 on lamp plate 100 determined according to actual conditions.
Refer to Fig. 3, it is the driving circuit principle figure of the utility model LED Down lamp.As shown in Figure 1 to Figure 3, in this embodiment, described driving power is Switching Power Supply, the drive circuit 300 of described driving power comprises input circuit, rectifier circuit, drive IC, resistance, electric capacity, step-down transformer and illuminating circuit, described input circuit is electrically connected with described rectifier circuit, described rectifier circuit is electrically connected with described drive IC by resistance and electric capacity, and described drive IC is electrically connected with described illuminating circuit.Wherein, the alternating current that the input voltage of described drive circuit is 180-240V.In this embodiment, the type of described drive IC is DU8618, the drive IC of the type is due to closed-loop control, in the normal range of operation of setting, output current maintains definite value, this drive IC has advantages of that circuit is simple, cost is low and constant current accuracy is high, described illuminating circuit comprises the LED lamp pearl 200 of several series connection, these several LED lamp pearls 200 be labeled as V1, V2, V3 ..., Vn-1, Vn, wherein n is integer, in other embodiments, in described illuminating circuit, the quantity of LED lamp pearl and arrangement mode can be decided according to the actual requirements.
The operation principle of drive circuit of the present utility model is as follows: input voltage is by after fuse F1, then carry out rectification through rectifier circuit, through the voltage of rectification through electric resistance partial pressure and capacitance energy storage filtering, voltage after rectification passes through drive IC, then drive IC is controlled the electric current of output, the current constant that makes output, this just makes the brightness of LED Down lamp can not change along with the variation of input voltage, and then can not cause the stroboscopic phenomenon of LED Down lamp.
LED Down lamp of the present utility model, by integrated to driving power and lamp plate, be convenient to assembling and automated production, cost-saving, and driving power of the present utility model is Switching Power Supply, this just makes the brightness of described LED Down lamp not change with the variation of voltage, and this drive circuit constant current accuracy is higher, and LED Down lamp is without stroboscopic phenomenon.
Above-mentioned explanation has fully disclosed detailed description of the invention of the present utility model.It is pointed out that and be familiar with the scope that any change that person skilled in art does detailed description of the invention of the present utility model does not all depart from claims of the present utility model.Correspondingly, the scope of claim of the present utility model is also not limited only to previous embodiment.