CN102644876A - LED light tube capable of replacing T5 fluorescent lamp - Google Patents
LED light tube capable of replacing T5 fluorescent lamp Download PDFInfo
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- CN102644876A CN102644876A CN2012101189793A CN201210118979A CN102644876A CN 102644876 A CN102644876 A CN 102644876A CN 2012101189793 A CN2012101189793 A CN 2012101189793A CN 201210118979 A CN201210118979 A CN 201210118979A CN 102644876 A CN102644876 A CN 102644876A
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Abstract
The invention relates to an LED light tube capable of replacing a T5 fluorescent lamp, which comprises an aluminum profile with same specification with that of a T5 light tube, an aluminum PCB board, a lamp cap, a lampshade, LED lamp beads installed on the aluminum PCB board, and a power module. The aluminum PCB board is fixed on the aluminum profile; the lamp cap is installed at the two ends of the aluminum profile and electrically connected with the aluminum PCB board through a lead; the LED light tube is characterized in that the section of the aluminum profile is in a semicircle shape; an installation plane is formed in the radial direction; the aluminum PCB board can be tightly adhered and fixed on the installation plane; a radiating fin is connected on the back of the installation plane; the end part of the radiating fin forms a semicircle shape; the power module comprises an anti-surge unit, a rectifying and filtering unit and a linear constant current unit which are connected in sequence; a power supply connected to the lamp cap is connected with an LED lamp bank after passing through the anti-surge unit, the rectifying and filtering unit and the linear constant current unit. The LED light tube has the characteristics that the power module adopts the linear constant current unit and has no electrolytic capacitors, light of the lamp beads is synchronous and stable, the brightness is uniform, and the service life of the whole light tube is long.
Description
Technical field:
The invention belongs to lighting field; Be particularly related to a kind of LED fluorescent tube of replaceable T5 fluorescent lamp; Especially can be directly installed on the T5 straight tube fluorescent lamp lamp bracket, need not to remove the direct alternative of electron rectifier, also can directly insert the LED fluorescent tube of the T5 standard model of civil power use and tunable optical.
Background technology:
Because the LED fluorescent tube is more energy-conservation 50% than straight tube fluorescent lamp, along with the development of LED technology, energy-conservation ratio also will continue to improve, and fluorescent tube exists the life-span to lack, and contains reasons such as mercury pollution, and straight tube fluorescent lamp is just progressively replaced by the LED fluorescent tube.At present profile is T8 (25.4 millimeters of a diameter), and the LED fluorescent tube of T10 (31.8 millimeters of diameters), its aluminium section bar cooling stand have enough spaces driver module of packing into, therefore alternative existing T8, T10 fluorescent tube.But T5 (diameter the is 15.875 millimeters) fluorescent tube of present occuping market leading position, its space is little, if will replace to the LED fluorescent tube, the complicated circuit of then can't packing into; Drive circuit can only be external, and is general as the electron rectifier of fluorescent lamp, perhaps the lamp bracket of a built-in driver module of tyre; Need change support or remove original drive circuit during LED fluorescent tube replacement fluorescent tube, and new driving is installed, operation is complicated; Expense is high, and the improper potential safety hazard that causes easily is installed, and use has inconvenience more.
T5 lamp bracket in the factory floor, particularly cleaning shop, because of standard-required, lamp bracket also must reach the purification requirement, and lamp bracket is big and complicated usually.If will change the LED fluorescent tube, then must the dismounting lamp bracket, change driving power, install again, or change whole lamp bracket, replacement inconvenience, cost is high and cause potential safety hazard easily.
The LED fluorescent tube behind the power supply breaks down in the lamp bracket if change, and needs repairing or upgrades, and then can only change same company, the product of same model could with built-in power supply coupling.The update of technology possibly occur not having the product of same model to supply with, and then must change power module again, or a whole set of the replacing.The complicated cost of operation is high, can't be general.
The electron rectifier fluorescent lamp; What electronic rectifier output drove fluorescent tube is the AC power of high-frequency and high-voltage; The high pressure that its work leans on two semiconductor power devices to form self-excitation half-bridge or its sharp half-bridge generation comes the fluorescence excitation fluorescent tube luminous; After exciting, electron rectifier output is the high-frequency ac constant-current supply, and fluorescent tube then is an impedance device.
Electrochemical capacitor also is widely used in the drive circuit at present, and because of the quality of electrochemical capacitor is uneven, poor reliability and life-span are short, and performance and life-span temperature influence are big.Though LED lamp pearl can accomplish 50000 to 100000 hours and even the longer life-span that the life-span of electrochemical capacitor far is shorter than lamp pearl or other components and parts, it becomes the thinnest part that falls that influences the LED lamp life.
Application number is: 201110212985.0 patent, though accomplished to pack drive circuit in the fluorescent tube of T5 into, can not directly replace, and also need remove original electron rectifier.The circuit of this patent also exists each LED lamp pearl luminous asynchronous, the uneven problem of lighting tube brightness.
Application number is: 201110285980.0 patent, though realized electron rectifier or the general circuit of civil power, complicated circuit, device is many, can only external driving or be assemblied in T8 or the fluorescent tube of T10, the T5 fluorescent tube of can't packing into.
Summary of the invention:
The objective of the invention is to invent and a kind ofly both can drive circuit be packed in the T5 specification fluorescent tube, do not remove electron rectifier, directly replace fluorescent tube, also can directly insert the LED fluorescent tube of the replaceable T5 fluorescent lamp of civil power work.
Technical scheme of the present invention is achieved in that a kind of LED fluorescent tube of replaceable T5 fluorescent lamp, comprises the aluminium section bar of T5 fluorescent tube specification, aluminium matter pcb board, and lamp holder, lampshade is assemblied in LED lamp pearl and power module on the aluminium matter pcb board; Aluminium matter pcb board is fixed on the aluminium section bar, and lamp holder is installed in the aluminium section bar two ends, and is electrically connected with aluminium matter pcb board through lead; It is characterized in that the aluminium section bar cross section becomes the semi arch moulding, radially form a mounting plane, aluminium matter pcb board can be close to and be fixed on this mounting plane, and the back side disjunctor of said mounting plane has radiating fin, and the radiating fin end constitutes the semi arch moulding; Power module comprises antisurge unit, rectification filtering unit and the linear constant current unit that connects successively; The power supply that lamp holder inserts connects LED lamp group behind antisurge unit, rectification filtering unit and linear constant current unit; Described LED lamp group is by after several LED lamp pearl series connection, the combination that again several LED lamp pearl strings is connected together.
Said antisurge unit is made up of with the piezo-resistance U that is attempted by on the input a fuse F who is serially connected on the loop.
Said rectification filtering unit is made up of high frequency bridge heap D and high-frequency filter capacitor C, and this high-frequency filter capacitor C is attempted by on the high frequency bridge heap D output; Described high-frequency filter capacitor C adopts electric capacity of the dacron or high pressure patch capacitor.
Said linear constant current unit is made up of two triode Q1, Q2, resistance R 1, R2 and voltage-stabiliser tube Z1; Triode Q1, Q2 form multiple tube, and resistance R 1 is connected between the colelctor electrode and base stage of multiple tube, and voltage-stabiliser tube Z1 connects the base stage and the output of multiple tube; Resistance R 2 is serially connected on multiple tube emitter stage and the output; Described triode Q1 is the low-power triode, and triode Q2 is a switch triode.
Adopt linear constant current unit in the power module of the present invention, make the LED fluorescent tube of T5 specification can directly replace the T5 fluorescent lamp, be installed on the T5 fluorescent lamp lamp bracket; Be operated in the electron rectifier rear end; Can make full use of the conventional fluorescent lamp bracket, need not to carry out track remodelling, directly replacement is used; Also can realize seamless compatibility directly by the 220V mains-supplied; The lamp pearl is luminous synchronously, and stable, brightness is even, and can insert controllable silicon or pressure regulator at input, realizes the linearity light adjusting function; Whole power module does not adopt big capacitive or perceptual components and parts, and power factor is high, moreover, not adopting electrochemical capacitor in the module, circuit is more stable, can prolong the life-span of the use of whole fluorescent tube greatly.
Description of drawings:
Below in conjunction with concrete legend the present invention is further specified:
The LED fluorescent tube perspective exploded view of the replaceable T5 fluorescent lamp of Fig. 1
The LED tube power module principle block diagram of the replaceable T5 fluorescent lamp of Fig. 2
Fig. 3 power module circuitry schematic diagram
Fig. 4 LED fluorescent tube is directly replaced the line sketch map of fluorescent tube
Fig. 5 LED fluorescent tube connects city's electrical wiring sketch map
Fig. 6 LED fluorescent tube connects city's electrical wiring sketch map behind controllable silicon
Wherein
1-aluminium section bar 11-mounting plane 12-radiating fin
13-guide groove 2-aluminium matter pcb board 3-lamp holder
4-lampshade 5-LED lamp pearl 6-power module
The specific embodiment:
See figures.1.and.2, the LED fluorescent tube of replaceable T5 fluorescent lamp comprises the aluminium section bar 1 of T5 fluorescent tube specification, aluminium matter pcb board 2, and lamp holder 3, lampshade 4 is assemblied in LED lamp pearl 5 and power module 6 on the aluminium matter pcb board 2; Said aluminium section bar 1 cross section becomes the semi arch moulding, radially forms a mounting plane 11, and the back side disjunctor of mounting plane 11 has radiating fin 12, and radiating fin 12 ends constitute the semi arch moulding, forms the part backlight of fluorescent tube housing; Aluminium matter pcb board 2 is close on the mounting plane 11 that is fixed on aluminium section bar, can be with the heat on the aluminium matter pcb board 2 toward external diffusion; Lampshade 4 be located in the guide groove 13 of aluminium section bar mounting plane 11 both sides, and lamp holder 3 is installed in aluminium section bar 1 two ends, and is electrically connected with aluminium matter pcb board 2 through lead; LED lamp pearl 5 is welded on the aluminium matter pcb board 2 with power module 6.
With reference to Fig. 2 and Fig. 3, power module comprises antisurge unit, rectification filtering unit and the linear constant current unit that connects successively; The power supply that lamp holder inserts connects LED lamp group behind antisurge unit, rectification filtering unit and linear constant current unit, the work of driving LED lamp group.
Wherein said LED lamp group is by after several LED lamp pearl 5 series connection, the combination that again several LED lamp pearl strings is connected together.The quantity of its combination will consider according to the parametric synthesis of input power and constant-current source, is complementary with the size of continuous current.
Described antisurge unit is made up of with the piezo-resistance U that is attempted by on the input a fuse F who is serially connected on the loop.Open, close or Disturbance in Power Net when producing when the LED fluorescent tube, bigger high-frequency impulse is arranged, can cause damage, the safeguard measure of being done to circuit in order to prevent it.The effect of one of which, fuse F (fuse) is: after electric current reaches a period of time of fuse nominal value, make the melt fusing with the heat that himself produces, thereby circuit is broken off, protected the rear end electronic device; Two, the effect of piezo-resistance U is: be high resistance measurement under the normality; When the pulse voltage maximum when power network fluctuation reaches piezo-resistance and inspires voltage; The electric current that flows through piezo-resistance increases sharply, thereby the voltage of clamping down on plays the effect of protection to the load of back.After surge disappeared, piezo-resistance automatically replied into the high impedance components and parts.
Described rectification filtering unit is made up of high frequency bridge heap D and high-frequency filter capacitor C, and this high-frequency filter capacitor C is attempted by on the high frequency bridge heap D output; Described high-frequency filter capacitor C adopts electric capacity of the dacron or high pressure patch capacitor, and is good than the electrochemical capacitor durability, can prolong the service life of whole fluorescent tube.The effect of high frequency bridge heap D is that the high frequency electric source with low frequency civil power or electron rectifier output converts dc source to; When: when A) leading to high frequency; Capacitance calculates gained according to the operating frequency of electron rectifier; Make high-frequency signal constitute the loop, be output as the low frequency direct current composition about 100Hz after the rectifying and wave-filtering through this electric capacity and electron rectifier.B) during external civil power, behind rectifying and wave-filtering, be output as the low frequency direct current of double mains frequency.No matter connect electron rectifier or civil power, output is the low frequency direct current after rectifying and wave-filtering.
Said linear constant current unit is made up of two triode Q1, Q2, resistance R 1, R2 and voltage-stabiliser tube Z1; Triode Q1, Q2 form multiple tube, and resistance R 1 is connected between the colelctor electrode and base stage of multiple tube, and voltage-stabiliser tube Z1 connects the base stage and the output of multiple tube; Resistance R 2 is serially connected on multiple tube emitter stage and the output; Described triode Q1 is the low-power triode, and triode Q2 is a switch triode.
Its effect one: a stable operating current is provided for LED lamp group, the electric current that prevents to flow through the LED lamp is excessive, burns out the lamp pearl; Its effect two: this element can disappear the crest voltage of input fall, and can stablize the effect of input power, and when preventing that input voltage from changing, LED lamp group is because of the problem of voltage, and electric current increases sharply, thereby causes input power also to increase sharply.
Two multiple tubes that triode is combined into, its effect are that the resistance of resistance R 1 can be got greatly as far as possible, and resistance R 2 is current sampling resistors, through changing its resistance, can adjust the supply current of LED lamp group.
If the input termination is the civil power of 50Hz/60Hz, the electric current that behind rectifying and wave-filtering, flows through the lamp pearl is near square wave, before input, adds controllable silicon dimmer, can change the input angle of flow, flows through the ON time of LED lamp pearl thereby change electric current, thereby carries out light modulation.
T5LED fluorescent tube standard operation state of the present invention is 220V, 50/60Hz, the directly following line work of compatibility:
1) 160v-265v, the 50/60Hz ac power supply line;
2) 160v-265v, the 50/60Hz Alternating Current Power Supply connects controllable silicon or pressure regulator power supply circuits;
3) 85V-265V, the electron rectifier supply line of 50/60Hz power supply;
4) 85V-265V, the 50/60Hz Alternating Current Power Supply meets the electron rectifier supply line that pressure regulator is supplied power.
5) 200v-300v, direct current supply line.
The concrete marginal data of LED fluorescent tube line of replaceable T5 fluorescent lamp is a line connecting line construction of directly replacing fluorescent tube like Fig. 4, and Fig. 5 is direct connecting line construction by mains-supplied, and Fig. 6 is the connecting line construction that behind controllable silicon light modulation, inserts civil power.
The test result of the LED fluorescent tube of replaceable T5 fluorescent lamp is following:
Testing equipment a: distant place 9800 power measurings, 0-300V AC voltage regulator, glad precious LX1330B illumination photometer;
Method of testing: 75 centimetres of fluorescent tube vertical lower, get A, B and three points of C; Toward interior 10 centimetres, the B point is a fluorescent tube central vertical below point apart from the lamp holder vertical lower for A point, C point.Sample1 is a fluorescent tube of the present invention.
Conclusion: can find out that from graph results the illumination of LED fluorescent tube tape splicing rectifier lamp bracket is about 2 times of fluorescent lamp, light efficiency is more than 1.5 times of fluorescent tube.Directly connect illumination under the civil power situation and be 1.5 times of fluorescent tube, light efficiency is more than 2 times of fluorescent tube.
Claims (4)
1. the LED fluorescent tube of a replaceable T5 fluorescent lamp comprises the aluminium section bar of T5 fluorescent tube specification, aluminium matter pcb board, and lamp holder, lampshade is assemblied in LED lamp pearl and power module on the aluminium matter pcb board; Aluminium matter pcb board is fixed on the aluminium section bar, and lamp holder is installed in the aluminium section bar two ends, and is electrically connected with aluminium matter pcb board through lead; It is characterized in that the aluminium section bar cross section becomes the semi arch moulding, radially form a mounting plane, aluminium matter pcb board can be close to and be fixed on this mounting plane, and the back side disjunctor of said mounting plane has radiating fin, and the radiating fin end constitutes the semi arch moulding; Power module comprises antisurge unit, rectification filtering unit and the linear constant current unit that connects successively; The power supply that lamp holder inserts connects LED lamp group behind antisurge unit, rectification filtering unit and linear constant current unit; Described LED lamp group is by after several LED lamp pearl series connection, the combination that again several LED lamp pearl strings is connected together.
2. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1 is characterized in that the antisurge unit is made up of with the piezo-resistance U that is attempted by on the input a fuse F who is serially connected on the loop.
3. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1 is characterized in that rectification filtering unit is piled D by a high frequency bridge and high-frequency filter capacitor C forms, and this high-frequency filter capacitor C is attempted by on the high frequency bridge heap D output; Described high-frequency filter capacitor C adopts electric capacity of the dacron or high pressure patch capacitor.
4. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1 is characterized in that linear constant current unit is made up of two triode Q1, Q2, resistance R 1, R2 and voltage-stabiliser tube Z1; Triode Q1, Q2 form multiple tube, and resistance R 1 is connected between the colelctor electrode and base stage of multiple tube, and voltage-stabiliser tube Z1 connects the base stage and the output of multiple tube; Resistance R 2 is serially connected on multiple tube emitter stage and the output; Described triode Q1 is the low-power triode, and triode Q2 is a switch triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101189793A CN102644876A (en) | 2012-04-20 | 2012-04-20 | LED light tube capable of replacing T5 fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101189793A CN102644876A (en) | 2012-04-20 | 2012-04-20 | LED light tube capable of replacing T5 fluorescent lamp |
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| CN102644876A true CN102644876A (en) | 2012-08-22 |
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| CN2012101189793A Pending CN102644876A (en) | 2012-04-20 | 2012-04-20 | LED light tube capable of replacing T5 fluorescent lamp |
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| CN201163009Y (en) * | 2008-01-16 | 2008-12-10 | 赵正松 | Electronic energy-saving lighting lamp tube |
| CN201332522Y (en) * | 2008-10-20 | 2009-10-21 | 刘东芳 | LED lighting circuit |
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| CN101984738A (en) * | 2010-12-08 | 2011-03-09 | 西安福安创意咨询有限责任公司 | Design method of light-emitting diode lamp circuit with current fluctuation control function |
| CN102005916A (en) * | 2010-10-14 | 2011-04-06 | 常熟市恒正仪器有限公司 | Multi-voltage conversion device for intrinsically safe direct current power supply |
| CN102230585A (en) * | 2011-07-28 | 2011-11-02 | 陈卫平 | LED (light-emitting diode) lamp tube used for replacing T5 straight tube fluorescent lamp |
| CN202195306U (en) * | 2011-08-04 | 2012-04-18 | 广州市欧思卡电器制造有限公司 | Novel illuminating fluorescent lamp |
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2012
- 2012-04-20 CN CN2012101189793A patent/CN102644876A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070222399A1 (en) * | 2004-12-01 | 2007-09-27 | Montgomery Bondy | Energy saving extra-low voltage dimmer lighting system |
| US20060145627A1 (en) * | 2005-01-03 | 2006-07-06 | Mei-Ling Peng | Continuous current control circuit modules of series string bulbs |
| CN201163009Y (en) * | 2008-01-16 | 2008-12-10 | 赵正松 | Electronic energy-saving lighting lamp tube |
| CN201332522Y (en) * | 2008-10-20 | 2009-10-21 | 刘东芳 | LED lighting circuit |
| CN101848581A (en) * | 2010-06-11 | 2010-09-29 | 南昌大学 | LED (light-emitting diode) lighting circuit |
| CN102005916A (en) * | 2010-10-14 | 2011-04-06 | 常熟市恒正仪器有限公司 | Multi-voltage conversion device for intrinsically safe direct current power supply |
| CN101984738A (en) * | 2010-12-08 | 2011-03-09 | 西安福安创意咨询有限责任公司 | Design method of light-emitting diode lamp circuit with current fluctuation control function |
| CN102230585A (en) * | 2011-07-28 | 2011-11-02 | 陈卫平 | LED (light-emitting diode) lamp tube used for replacing T5 straight tube fluorescent lamp |
| CN202195306U (en) * | 2011-08-04 | 2012-04-18 | 广州市欧思卡电器制造有限公司 | Novel illuminating fluorescent lamp |
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Application publication date: 20120822 |