CN207427520U - A kind of LED fluorescent lamp pipe suitable for low-voltage-grade - Google Patents

Abstract

The utility model is related to LED illumination device, more particularly to a kind of LED fluorescent lamp pipes suitable for low-voltage-grade；Including 4 electrode artifical resistances, high-frequency rectification bridge, filter capacitor, constant current chopper circuit and LED light group；4 electrode artifical resistances are set in pairs two ends of fluorescent tube, and one end of the electrode artifical resistance of each group correspondence is connected with 2 lamp bases of lamp tube end, other end interconnection；The contact of two interconnection is all connected with the ac input end of high-frequency rectification bridge, and DC output end of the filter capacitor respectively with the input terminal of constant current chopper circuit and high-frequency rectification bridge is connected, and the DC output end of constant current chopper circuit is connected with LED light group；Technical solutions of the utility model can adapt to all types of fluorescent lighting fixtures of each voltage class in various countries, as long as directly replacing fluorescent tube, wiring drastically increases the reducing energy consumption efficiency of fluorescent lighting fixture, reduce improvement cost without any change.

Description

A kind of LED fluorescent lamp pipe suitable for low-voltage-grade

Technical field

The utility model is related to a kind of LED illumination devices, more particularly to a kind of LED fluorescent lamp suitable for low-voltage-grade Pipe.

Background technology

The growing energy consumption for making lighting area of LED lighting technology is greatly reduced, however for largely Existing lamps and lanterns, we are intended to LED light source can be compatible with existing lamps and lanterns to greatest extent, as long as small to be done to existing lamps and lanterns Amplitude changes or just can be mounted directly corresponding LED light source without change, reaches and realizes that LED shines under conditions of economy as far as possible Bright effect；The LED fluorescent lamp pipe of the prior art although contour structures are consistent with conventional fluorescent fluorescent tube, can be replaced more easily Traditional tube is changed, the wiring yet with conventional fluorescent fluorescent tube needs four, and also inductance or electric ballast, replaces therefore LED lamp tube must also change lamp interior wiring, and LED lamp tube normal operation can just be made by removing ballast, this causes reducing energy consumption Efficiency be greatly lowered, especially under conditions of developed country's human cost is higher, reducing energy consumption spend it is high, therefore, it is necessary to Research and development possess the New LED fluorescent tube directly replaced existing fluorescent tube, need not change existing light wiring, can just promote LED replaces the reducing energy consumption of traditional tube to be widely implemented.

In the product of the prior art, there is the LED light that can directly adapt to electric ballast or impedance type Inductive ballast Pipe comes out, however in the area of the 110-120V low-voltage-grades such as North America, Japan, Inductive ballast often uses electrode filaments only The special ballast circuits such as vertical heating, double-tube series, two-tube electrode parallel connection, and such product of the prior art bar none will The electrode interior short circuit of lamp tube ends, this kind of product are such as used in this kind of ballast circuit of North America or Japan, it is likely that can burn Ruining ballast causes lamps and lanterns to fail, therefore this kind of product of the prior art does not adapt to the existing fluorescent lamp of all categories still Tool, research and development are a kind of significant for being suitable for low-voltage-grade occasion fluorescent lamp.

Utility model content

The utility model is directed to above-mentioned technical problem, provides a kind of LED fluorescent lamp pipe suitable for low-voltage-grade, this Technical solution is used by utility model solves above-mentioned technical problem suitable for the LED fluorescent lamp pipe of low-voltage-grade：

A kind of LED fluorescent lamp pipe suitable for low-voltage-grade, wherein, including：

4 electrode artifical resistances, high-frequency rectification bridge, filter capacitor, constant current chopper circuit and LED light group；4 electrode simulations Resistance is set in pairs two ends of fluorescent tube, and one end of the electrode artifical resistance of each group corresponds to and fluorescent tube end 2 lamp bases in portion are connected, other end interconnection；The contact of two interconnection is all connected with the ac input end of the high-frequency rectification bridge, institute It states DC output end of the filter capacitor respectively with the input terminal of constant current chopper circuit and the high-frequency rectification bridge to be connected, the perseverance The DC output end of stream chopper circuit is connected with LED light group.

Preferably, the above-mentioned LED fluorescent lamp pipe suitable for low-voltage-grade, wherein, the LED fluorescent lamp pipe also wraps Overvoltage protection device is included, the overvoltage protection device is in parallel with the ac input end of high-frequency rectification bridge.

Preferably, the above-mentioned LED fluorescent lamp pipe suitable for low-voltage-grade, wherein, 4 electrode artifical resistance resistance values Equal, resistance value is between 2-50 ohm.

Preferably, above-mentioned be suitable for low-voltage-grade LED fluorescent lamp pipe, wherein, the constant current chopper circuit it is defeated Enter voltage range between 70-265V.

The beneficial effects of the utility model are：The utility model overcomes prior art LED fluorescent lamp pipe can not be complete Existing fluorescent lighting fixture is adapted to, reducing energy consumption needs the deficiency of reconfiguration line, and it is all types of that it can adapt to each voltage class in various countries Fluorescent lighting fixture, as long as directly replacing fluorescent tube, wiring drastically increases the reducing energy consumption of fluorescent lighting fixture without any change Efficiency reduces improvement cost, and can also easily gain conventional fluorescent fluorescent tube in special circumstances later, so as to be substantially improved The reducing energy consumption enthusiasm of user.

Description of the drawings

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, the utility model and its spy Sign, shape and advantage will become more apparent.Identical mark indicates identical part in whole attached drawings.It can be by Attached drawing is drawn according to ratio, it is preferred that emphasis is the purport of the utility model is shown.

Fig. 1 is the structure diagram that the utility model is suitable for low-voltage-grade LED fluorescent lamp pipe.

Specific embodiment

The utility model is further described with specific embodiment below in conjunction with the accompanying drawings, but not as this practicality New restriction.

As shown in Figure 1, the concrete structure that the utility model is suitable for low-voltage-grade LED fluorescent lamp pipe includes：

4 electrode artifical resistances 1, high-frequency rectification bridge 2, filter capacitor 3, constant current chopper circuit 4 and LED light group 5；4 electricity Pole artifical resistance 1 is set in pairs two ends of fluorescent tube, and one end of the electrode artifical resistance of each group is corresponding It is connected with 2 lamp bases of lamp tube end, other end interconnection；The contact of two interconnection is all connected with the exchange input of high-frequency rectification bridge 2 End, DC output end of the filter capacitor 3 respectively with the input terminal of constant current chopper circuit 4 and high-frequency rectification bridge are connected, and constant current is cut The DC output end of wave circuit 4 is connected with LED light group 5.

Preferably, LED fluorescent lamp pipe has further included overvoltage protection device 6, overvoltage protection device 6 and high-frequency rectification bridge 2 Ac input end is in parallel.

Preferably, 4 electrode artifical resistance resistance values are equal, and resistance value is between 2-50 ohm；The input of constant current chopper circuit Voltage range is between 70-265V.

Referring to Fig. 1, this is the utility model principle structure chart, it is well known that conventional fluorescent fluorescent tube has 4 lamp bases, both ends Two electrodes have the different methods of operation depending on different ballast circuits, if the driving circuit of LED lamp tube is directly and lamp The arbitrary lamp base in pipe both ends is connected, then probably due to not connecting and can not be formed into a loop with the firewire branch of ballast, lamp is not It can light；If by two lamp bases at both ends, each short circuit picks out, although impedance type ballast under 220V power environments or Operation is not a problem under electric ballast, but for the double of North America, the common electrode independent heating of Japan or electrode series connection heating Pipe ballast is then likely to burn the heating part coil of ballast, fails so as to cause lamps and lanterns.The utility model uses 4 A electrode artifical resistance, is drawn by the center-side of artifical resistance and connects LED drive circuit, can either so ensure the fire with ballast Line branch can form circuit, can also limit the heated current of filament, so as in North America, the common electrode independent heating of Japan Or it can also be worked normally under the dual-tube ballast environment of electrode series connection heating；41 resistance values of electrode artifical resistance are preferably equal, resistance Value, so can be similar to the electrode impedance of traditional tube between 2-50 ohm, and will not generate too big power attenuation.

The driving circuit of the utility model is made of high-frequency rectification bridge and constant current chopper circuit, is fitted using high-frequency rectification bridge The high frequency electric of electric ballast is answered, while high frequency ripple is filtered out by filter capacitor, chopping wave constant current circuit can be made more stably Operation, it can also include an overvoltage protection device, and overvoltage protection device is in parallel with the ac input end of high-frequency rectification bridge 2, To absorb the startup high pressure of electric ballast, the reliability of circuit is further promoted.In order to adapt to the town of different performance, wiring The impedance series ballast device or double-tube series ballast under device, especially low supply voltage environment are flowed, chopping wave constant current circuit uses The existing common non-isolated voltage-dropping type drive module of field of LED drive, it is necessary to, input voltage minimum imported using Width funtion The relatively low ballast circuit of the above-mentioned type output voltage so can be just adapted in 265V or so in 70V or so, peak, Also it is higher from lotus root booster type ballast circuit to adapt to output voltage, reach adapt to it is various celebrate a festival, the existing fluorescence of various specifications Lamp ballast avoids change light wiring so as to accomplish directly to replace the fluorescent tube of existing various specifications, especially adapts to The occasion of below 120V low-voltage-grades plays the advantageous effect that reducing energy consumption cost is greatly reduced.The utility model is greatly The reducing energy consumption efficiency of fluorescent lighting fixture is improved, improvement cost is reduced, and can also easily gain in special circumstances later Conventional fluorescent fluorescent tube, so as to which the reducing energy consumption enthusiasm of user be substantially improved.

The preferred embodiment of the utility model is described above.It is to be appreciated that the utility model not office It is limited to above-mentioned particular implementation, wherein the equipment and structure be not described in detail to the greatest extent are construed as with the common side in this field Formula is practiced；Any those skilled in the art in the case where not departing from technical solutions of the utility model ambit, may be used Technical solutions of the utility model are made with many possible changes and modifications using the methods and technical content of the disclosure above or is repaiied The equivalent embodiment of equivalent variations is changed to, this has no effect on the substantive content of the utility model.Therefore, it is every without departing from this practicality The content of new technique scheme, according to the technical essence of the utility model to it is made for any of the above embodiments it is any it is simple modification, etc. With variation and modification, still fall within technical solutions of the utility model protection in the range of.

Claims (4)

1. a kind of LED fluorescent lamp pipe suitable for low-voltage-grade, which is characterized in that including：

4 electrode artifical resistances (1), high-frequency rectification bridge (2), filter capacitor (3), constant current chopper circuit (4) and LED light group (5)； 4 electrode artifical resistances (1) are set in pairs two ends of fluorescent tube, and one end of the electrode artifical resistance of each group Correspondence is connected with 2 lamp bases of lamp tube end, other end interconnection；The contact of two interconnection is all connected with the high-frequency rectification bridge (2) ac input end, the filter capacitor (3) respectively with the input terminal of constant current chopper circuit (4) and the high-frequency rectification The DC output end of bridge (2) is connected, and the DC output end of the constant current chopper circuit (4) is connected with LED light group (5).

2. the LED fluorescent lamp pipe according to claim 1 suitable for low-voltage-grade, which is characterized in that the LED fluorescence Fluorescent tube has further included overvoltage protection device (6), and the ac input end of the overvoltage protection device (6) and high-frequency rectification bridge (2) is simultaneously Connection.

3. the LED fluorescent lamp pipe according to claim 1 suitable for low-voltage-grade, which is characterized in that 4 electrode simulations Resistance (1) resistance value is equal, and resistance value is between 2-50 ohm.

4. according to claim 1 be suitable for low-voltage-grade LED fluorescent lamp pipe, which is characterized in that the constant current chopper The input voltage range of circuit is between 70-265V.