CN2886311Y

CN2886311Y - AC 220V screwed type semiconductor LED lighting lamp

Info

Publication number: CN2886311Y
Application number: CNU2006200331363U
Authority: CN
Inventors: 刘世安
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-21
Filing date: 2006-02-21
Publication date: 2007-04-04
Anticipated expiration: 2016-02-21

Abstract

The utility model discloses a screw-type semi-conductor LED lighting lamp using 220V alternating current. The utility model is characterized in that the insulating casing is an open-type casing having a standard screw thread interface, a circuit board is fixed at the opening of the insulating casing, a plurality of high light semi-conductor LED are arranged at the circuit board. A voltage dropping constant-current circuit made of capacitor is series connected with the alternating current input end of the rectification circuit of the drive circuit of the semi-conductor LED. And the direct current output end of the rectification circuit is parallel connected with a transient protection made of capacitor, a filtering capacitor and a LED array made of the series connection of the semi-conductor LED. The utility model has the advantages of that it is simple in structure, highest in reliability, lowest in cost, easiest in fabrication and has the highest power-saving efficiency. And the LED is stable in light intensity, without twinkling and has a long service life. Further, the entire circuit is capacitive and produces no pollution to the alternating current electrified wire netting, thereby being beneficial to absorbing the pollution of the alternating current electrified wire netting, and the circuit is an environmental protection circuit.

Description

Alternating current 220V screw type semiconductor LED illuminating lamp

Technical field

The utility model relates to a kind of general service lamp, the alternating-current 220 v semiconductor LED illuminating lamp that particularly a kind of daily life is used.

Background technology

Existing illuminating lamp incandescent lamp commonly used and fluorescent lamp, with under the constant power, their brightness is low, and power consumption is big, and the life-span is short.The lighting bulb that also useful lens and LED make, its weak point is that cost is too high, makes complicated.

The utility model content

In order to overcome above-mentioned deficiency, the utility model provides a kind of alternating current 220V screw type semiconductor LED illuminating lamp.It is made up of insulation crust, semiconductor LED, circuit board and led drive circuit.It is characterized in that

Described insulation crust is a shell with open type of standard thread interface; The opening part of described insulation crust is fixed with circuit board, and many high-brightness semiconductor LED are installed on the described circuit board; The ac input end of the rectification circuit of the drive circuit of described semiconductor LED is in series with the step-down constant-current circuit that is made of electric capacity; The dc output end of described rectification circuit is parallel with the transient protection that is made of electric capacity and the electric capacity and the semiconductor LED array of filtering.

Described rectification circuit is made up of the rectifier bridge that diode constitutes.

Described led array is connected in series by many high-brightness semiconductor LED and forms.

Compared with prior art, the beneficial effects of the utility model are: (one), high-brightness semiconductor LED volume is little, the life-span is long, luminous efficiency is high, energy-conservation.(2), drive circuit is the simplest, reliability is the highest, cost is minimum, makes the simplyst, power saving is most effective.(3), owing to adopted constant current, filtering technique, the LED light intensity is the most stable, the flicker free sense.(4), since entire circuit be capacitive, help improving the power factor (PF) of AC network, pollution-free to AC network.Helping absorbing the pollution of AC network, is Environmental protection lamp.

Description of drawings

Fig. 1 is the front view of the utility model structure.

Fig. 2 is the vertical view of the utility model structure.

Fig. 3 is the utility model alternating-current 220 v semiconductor LED drive circuit schematic diagram.

In Fig. 1,5. high-brightness semiconductor LED, 6. circuit board, 7. open type insulation crust, 8.E27 standard thread interface.

In Fig. 2,1. alternating current 220V input.

In Fig. 3,1. alternating current 220V input, 2. high-voltage capacitance, 3. rectifier bridge, 4. filter capacitor, 5. semiconductor LED array.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is elaborated.

In structure chart shown in Figure 1, the utility model comprises open type insulation crust 7, E27 standard thread interface 8 and the circuit board 6 that high-brightness semiconductor LED 5 is installed.Semiconductor LED 5 can be shades of colour.

In circuit shown in Figure 3, the ac input end of rectification circuit 3 is in series with electric capacity 2; The led array 5 that the dc output end of rectification circuit 3 is parallel with electric capacity 4 and is in series by semiconductor LED.Rectification circuit 3 constitutes rectifier bridge by four commutation diodes.The step-down constant-current circuit of semiconductor LED drive circuit adopts high-voltage capacitance 2; alternating current 220V become low pressure constant current output (when the AC impedance of electric capacity 2＞＞during the forward conduction resistance of led array 5); after rectifier bridge 3 rectifications, obtain direct current; after transient protection, filter capacitor 4 filtering, obtain DC current more stably again, give the high-brightness semiconductor led array 5 power supplies.When disturbing, the voltage at electric capacity 4 two ends can not suddenly change, and has protected the operate as normal of semiconductor LED array 5.

Claims

1, a kind of alternating current 220V screw type semiconductor LED illuminating lamp comprises insulation crust, it is characterized in that, described insulation crust is a shell with open type of standard thread interface; The opening part of described insulation crust is fixed with circuit board, and many high-brightness semiconductor LED are installed on the described circuit board; The ac input end of the rectification circuit of the drive circuit of described semiconductor LED is in series with the step-down constant-current circuit that is made of electric capacity; The dc output end of described rectification circuit is parallel with the transient protection that is made of electric capacity and the electric capacity and the semiconductor LED array of filtering.

2, a kind of alternating current 220V screw type semiconductor LED illuminating lamp according to claim 1 is characterized in that described rectification circuit is made up of the rectifier bridge that diode constitutes.

3, a kind of alternating current 220V screw type semiconductor LED illuminating lamp according to claim 1 is characterized in that, described led array is connected in series by many high-brightness semiconductor LED and forms.