CN102635804B - LED (light-emitting diode) lamp tube capable of replacing T5 fluorescent lamp - Google Patents
LED (light-emitting diode) lamp tube capable of replacing T5 fluorescent lamp Download PDFInfo
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Abstract
The invention relates to an LED (light-emitting diode) lamp tube capable of replacing a T5 fluorescent lamp. The LED lamp tube comprises a lamp head, standard T5 lamp tube aluminum profile, a PCB (printed circuit board), a lamp shade, an LED lamp bead assembled on the PCB and a power supply module, wherein the power supply module comprises an anti-surge unit, a rectification filtering unit, a first LED lamp group, a linear constant current unit and a second LED lamp group which are successively connected; the power supply module also comprises a switching control unit, and the switching control unit is connected with the rectification filtering unit and can respectively control the first LED lamp group and the second LED lamp group; when the switching control unit detects that a low-frequency signal is output after the rectification, the switching control unit can not output a control signal, and first LED lamp group, the linear constant current unit and the second LED lamp group form a tandem working mode; and when the switching control unit detects that a high-frequency signal is output after the rectification, the switching control unit can output the control signal, and first LED lamp group and the second LED lamp group are switched to a parallel operation mode so as to realize automatic switchover.
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 T5 straight tube fluorescent lamp lamp bracket, without the direct alternative of removing electron rectifier, also can directly access the LED fluorescent tube of the T5 standard model of civil power use and tunable optical.
Background technology:
Because LED fluorescent tube is than straight tube fluorescent streetlamp energy-saving 50%, along with the development of LED technology, energy-conservation ratio also will continue to improve, and fluorescent tube average life is short, and containing reasons such as mercury pollution, straight tube fluorescent lamp is just progressively replaced by LED fluorescent tube.Profile is T8 (25.4 millimeters of diameter) at present, the LED fluorescent tube of T10 (31.8 millimeters of diameters), and its aluminium section bar cooling stand has enough spaces to pack driver module into, so alternative existing T8, T10 fluorescent tube.But T5 (diameter the is 15.875 millimeters) fluorescent tube of current occuping market leading position, its space is little, if will replace to LED fluorescent tube, cannot pack complicated circuit into, drive circuit can only be external, as the electron rectifier of fluorescent lamp, or the lamp bracket of a built-in driver module of tyre, when LED fluorescent tube is replaced fluorescent tube, need to change support or remove original drive circuit, and new driving is installed, and operation is complicated, and expense is high, and Rig up error easily causes potential safety hazard, use and have inconvenience more.
T5 lamp bracket in factory floor, particularly cleaning shop, because of standard-required, lamp bracket also must reach purification requirement, and lamp bracket is large and complicated conventionally.If change LED fluorescent tube, must dismounting lamp bracket, change driving power, then install, or change whole lamp bracket, replace inconvenience, cost is high and easily cause potential safety hazard.
If the LED fluorescent tube in replacing lamp bracket after power supply breaks down, need repairing or upgrade, can only change same company, the product of same model could mate with built-in power supply., may there is not having the Product supply of same model in the update of technology, must change power module again, or a whole set of replacing.The complicated cost of operation is high, cannot be general.
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 forms self-excitation half-bridge or its sharp half-bridge generation by two semiconductor power devices comes fluorescence excitation fluorescent tube luminous, after exciting, electron rectifier output is high-frequency ac constant-current supply, and fluorescent tube is an impedance device.
Electrochemical capacitor is also widely used in drive circuit at present, and because the quality of electrochemical capacitor is uneven, poor reliability and life-span are short, and performance and life-span temperature influence large.Although LED lamp pearl can accomplish 50000 to 100000 hours and even the longer life-span, the life-span of electrochemical capacitor is far shorter than lamp pearl or other components and parts, and it becomes the thinnest part that falls that affects LED lamp life.
Application number is: 201110212985.0 patent, although accomplished drive circuit to pack in the fluorescent tube of T5, can not directly replace, and also need to remove original electron rectifier.The circuit of this patent also exists each LED lamp pearl luminous asynchronous, the problem that lighting tube brightness is inhomogeneous.
Application number is: 201110285980.0 patent, although realized electron rectifier or the general circuit of civil power, circuit is complicated, and device is many, can only external driving or be assemblied in T8 or the fluorescent tube of T10, cannot pack T5 fluorescent tube into.
Summary of the invention:
The object of the invention is to invent and a kind of drive circuit is packed in T5 specification fluorescent tube, both can not remove electron rectifier, directly replace fluorescent tube and use, also can directly access the LED fluorescent tube of the replaceable T5 fluorescent lamp of civil power work.
Technical solution of the present invention is achieved in that a kind of LED fluorescent tube of replaceable T5 fluorescent lamp, comprise lamp holder, T5 fluorescent tube specification aluminium section bar, pcb board, lampshade, be assemblied in LED lamp pearl and power module on pcb board; Pcb board is fixed on aluminium section bar, and lamp holder is arranged on aluminium section bar two ends, and is electrically connected to pcb board; It is characterized in that aluminum profile cross section becomes semi arch moulding, radially form a mounting plane, long limit, mounting plane both sides convexes with respectively locking edge, article two, the one side that locking edge is relative has a reducing, one side mutually far away has a buckling groove that can allow lampshade slip into, the back side disjunctor of described mounting plane has radiating fin, and radiating fin end forms semi arch moulding; Described mounting plane surface is coated with heat conductive silica gel, and pcb board is parallel to be pressed among two locking edges, and by the systolic pressure of the lampshade of outer button, draw-in groove both sides aluminium section bar pushes inwardly, clamp pcb board, therein clamping by the reducing of two locking edges, close adhesion is on described mounting plane; Lamp holder inner side is with the electroconductive elastic sheet being electrically connected to lamp holder external electrode, and lamp holder is arranged on aluminium section bar two ends, and the shell fragment that is in place distortion is conflicted on pcb board conductive contact, forms and is electrically connected to; Power module comprises antisurge unit, rectification filtering unit, a LED lamp group, linear constant current unit and the 2nd LED lamp group connecting successively; Power module also comprises a switch control unit, and switch control unit connects rectification filtering unit, and controls respectively a LED lamp group and the 2nd LED lamp group; While being output as low frequency signal after switch control unit detects rectification, switch control unit is not exported control signal, and a LED lamp group, linear constant current unit and the 2nd LED lamp group form tandem working pattern; While being output as high-frequency signal after switch control unit detects rectification, switch control unit output control signal, switches to a LED lamp group and the 2nd LED lamp group is parallel operation pattern, and closes linear constant current unit; A described LED lamp group and the 2nd LED lamp group are by after several LED lamp pearl series connection, then the combination that several LED lamp pearl strings are connected together.
Described lamp holder is the outer polygonized structure of inner circle, and the center of inner circle toward aluminium section bar one lateral deviation from; Corresponding lampshade one side of described lamp holder has an extension.The eccentric design of lamp holder, both can prevent from when round lamp tube storage from placing rolling, and also can avoid the wrongly installed direction of operator, moreover the outer polygon design of lamp holder, the person of being easy to use is by tool operation, and the extension of corresponding lampshade one side, loads and unloads fluorescent tube in the time of can avoiding fluorescent tube waste heat not loose and iron hand.
Described lamp holder forms the plug tenon of disjunctor inwardly, is plugged in the gap of aluminium section bar radiating fin by this plug tenon, forms embedded location structure.
The mounting plane back side of described aluminium section bar is domes, and its cross section thick middle, gradually toward both sides attenuation; Described radiating fin is distributed on described domes surface.In the middle of aluminium section bar, thicken and be conducive to heat conduction.
Described antisurge unit is comprised of a piezo-resistance R1 who is serially connected in the fuse Fuse on loop and is attempted by input.
Described rectification filtering unit is that a high frequency bridge heap D1, fast recovery diode D2 and high-frequency filter capacitor C4 form, and rectifier bridge stack D1 output meets diode D2, and diode D2 output meets high-frequency filter capacitor C4; Described high-frequency filter capacitor C4 adopts electric capacity of the dacron or high pressure patch capacitor.
Described switch control unit is by three capacitor C 1, C2, and C3, resistance R 1, pressure limiting diode Z1 and two controllable silicon SCR 1 and SCR2 form; Capacitor C 1, C2, C3 and resistance R 1 form a capacitance partial pressure circuit, and capacitor C 2 high-pressure sides connect the control pin of controllable silicon SCR 1, and controllable silicon SCR 1 connects respectively between rectification filtering unit output and the 2nd LED lamp group input; The high-pressure side of capacitor C 3 is connected with the control pin of silicon controlled SCR2 after pressure limiting diode Z1, and controllable silicon SCR 2 connects respectively between the 2nd LED lamp group output and backflow; By the break-make of two controllable silicon SCR 1 and SCR2, switching a LED lamp group and the 2nd LED lamp group is in mode of operation in parallel or series connection.
Described linear constant current unit is comprised of two triode Q1, Q2, resistance R 2, R3, high speed recovery diode D3 and voltage-stabiliser tube Z2; Triode Q1, Q2 form multiple tube, and resistance R 2 is connected between the colelctor electrode and base stage of multiple tube, and voltage-stabiliser tube Z2 connects base stage and the output of multiple tube; Resistance R 3 is serially connected on multiple tube emitter stage and output, and high speed recovery diode D3 is connected on unit input; Described triode Q1 is low-power triode, and triode Q2 is switch triode; This unit input is connected with the output of a LED lamp group, and output is connected with the input of the 2nd LED lamp group.
In power module of the present invention, adopt linear constant current unit and two LED lamp groups, make the LED fluorescent tube of T5 specification can directly replace T5 fluorescent lamp, be arranged on T5 fluorescent lamp holder, be operated in electron rectifier rear end, can make full use of conventional fluorescent lamp bracket, without carrying out track remodelling, directly replace and use; Also can, directly by 220V mains-supplied, realize seamless compatibility; And coordinate switch control unit, and according to civil power or the different input conditions of electron rectifier, two the LED lamp groups that automatically switch are series connection or parallel operation pattern, to guarantee under two states, and the uniformity of LED lamp group light efficiency; Lamp pearl is luminous synchronous, and stable, brightness is even, and at the accessible controllable silicon of input or pressure regulator, realizes linearity light adjusting function; Whole power module does not adopt large capacitive or perceptual components and parts, and power factor is high, moreover, in module, not adopting electrochemical capacitor, circuit is more stable, can greatly extend the life-span of the use of whole fluorescent tube.
Accompanying drawing explanation:
Below in conjunction with concrete legend, the present invention will be further described:
The LED fluorescent tube perspective exploded view of the replaceable T5 fluorescent lamp of Fig. 1
Fig. 2 aluminum profile cross section schematic diagram
The LED tube power module principle block diagram of the replaceable T5 fluorescent lamp of Fig. 3
Fig. 4 power module circuitry schematic diagram
Fig. 5 LED fluorescent tube is directly replaced the line schematic diagram of fluorescent tube
Fig. 6 LED fluorescent tube connects city's electrical wiring schematic diagram
Fig. 7 LED fluorescent tube is through controllable silicon Hou Jie city electrical wiring schematic diagram
Wherein
1-aluminium section bar 11-mounting plane 12-locking edge
The little convex edge of 121-122-buckling groove 13-radiating fin
2-lamp holder 21-electrode 22-shell fragment
23-extension 24-plug tenon 3-PCB plate
The 4-lampshade 41-5-LED of falling flanging lamp pearl
6-power module 61-resolution element
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, and lamp holder 2, pcb board 3, lampshade 4, is assemblied in LED lamp pearl 5 and power module 6 on pcb board 3; In this structure, the resolution element 61 of power module 6 is welded on respectively pcb board 3 two, and LED lamp pearl 5 is welded on centre, avoids resolution element 61 to take intermediate space.Aluminium section bar 1 cross section becomes semi arch moulding, radially form a mounting plane 11, long limit, mounting plane 11 both sides convexes with respectively locking edge 12, article two, the one side that locking edge 12 is relative has a reducing, this reducing is formed by the little convex edge 121 of locking edge 12 ends, and one side mutually far away has a buckling groove 122, the flanging 41 that falls of lampshade 4 both sides can slip into location in this buckling groove 122, otherwise also two locking edges 12 is formed to constraint; The back side disjunctor of described mounting plane 11 has radiating fin 13, and radiating fin 13 ends form semi arch moulding; More particularly, the mounting plane back side of aluminium section bar 1 is domes, and its cross section thick middle toward both sides attenuation, is beneficial to heat conduction gradually, and described radiating fin 13 is distributed on described domes surface.
The installation of pcb board 3, described mounting plane 11 surfaces are coated with the heat conductive silica gel with high bonding force, pcb board 3 is parallel to be pressed among two locking edges 12, and by the systolic pressure of the lampshade 4 of outer button, draw-in groove both sides aluminium section bar pushes inwardly, clamps pcb board 3, also without screw, fixes, can be therein clamping by the reducing of two locking edges 12, close adhesion is on described mounting plane 11.The pcb board 3 that this example is mentioned is to adopt the high heat conduction CEM-3PCB of the R1787 of Panasonic plate.
With reference to Fig. 3 and Fig. 4, power module comprises antisurge unit, rectification filtering unit, a LED lamp group, linear constant current unit and the 2nd LED lamp group connecting successively; Power module also comprises a switch control unit, and switch control unit connects rectification filtering unit, and controls respectively a LED lamp group and the 2nd LED lamp group; When directly connecing civil power (low-frequency power), switch control unit is output as low frequency signal after rectification being detected, and switch control unit is not exported control signal, and a LED lamp group, linear constant current unit and the 2nd LED lamp group form tandem working pattern; When being connected on electron rectifier rear end, because electron rectifier is output as high frequency electric source, switch control unit is output as high-frequency signal after rectification being detected, switch control unit output control signal, switch to a LED lamp group and the 2nd LED lamp group is parallel operation pattern, and close linear constant current unit.
A wherein said LED lamp group and the 2nd LED lamp group are by after several LED lamp pearl series connection, then the combination that several LED lamp pearl strings are connected together.
Antisurge unit is comprised of a piezo-resistance R1 who is serially connected in the fuse Fuse on loop and is attempted by input.When LED fluorescent tube, open, close or electrical network disturbs while producing, have larger high-frequency impulse, in order to prevent that it from can cause damage to circuit, the safeguard measure of doing.The effect of one, fuse Fuse (fuse) is: after electric current reaches a period of time of fuse nominal value, the heat producing with himself makes melt fusing, thereby circuit is disconnected, and has protected rear end electronic device; Two, the effect of piezo-resistance U is: under normality, be high resistance measurement; 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 load below.After surge disappears, piezo-resistance automatically replies into high impedance components and parts.
Rectification filtering unit is that a high frequency bridge heap D1, fast recovery diode D2 and high-frequency filter capacitor C4 form, and rectifier bridge stack D1 output meets diode D2, and diode D2 output meets high-frequency filter capacitor C4; Described high-frequency filter capacitor C4 adopts electric capacity of the dacron or high pressure patch capacitor.The effect of high frequency bridge heap is to convert the high frequency electric source of low frequency civil power or electron rectifier output to dc source.Described high-frequency filter capacitor C4 adopts electric capacity of the dacron or high pressure patch capacitor, good compared with electrochemical capacitor durability, can extend the service life of whole fluorescent tube.The effect of high frequency bridge heap D1 is to convert the high frequency electric source of low frequency civil power or electron rectifier output to dc source, when: while A) leading to high frequency, capacitance calculates gained according to the operating frequency of electron rectifier, make high-frequency signal form loop through this electric capacity and electron rectifier, after rectifying and wave-filtering, be output as the low frequency direct current composition of 100Hz left and right.B), during external civil power, after rectifying and wave-filtering, be output as the low frequency direct current of double mains frequency.No matter connect electron rectifier or civil power, after rectifying and wave-filtering, output is low frequency direct current.
Switch control unit is by three capacitor C 1, C2, and C3, resistance R 1, pressure limiting diode Z1 and two controllable silicon SCR 1 and SCR2 form; Capacitor C 1, C2, C3 and resistance R 1 form a capacitance partial pressure circuit, and capacitor C 2 high-pressure sides connect the control pin of controllable silicon SCR 1, and controllable silicon SCR 1 connects respectively between rectification filtering unit output and the 2nd LED lamp group input; The high-pressure side of capacitor C 3 is connected with the control pin of silicon controlled SCR2 after pressure limiting diode Z1, and controllable silicon SCR 2 connects respectively between the 2nd LED lamp group output and backflow; By the break-make of two controllable silicon SCR 1 and SCR2, switching a LED lamp group and the 2nd LED lamp group is in mode of operation in parallel or series connection.Operation principle, when external power supply is low frequency (external 220V civil power), electric current cannot pass through capacitor seriesing circuit, this loop can be considered open circuit, SCR control end no-voltage, controllable silicon open circuit, a LED lamp group, linear constant current unit and the 2nd LED lamp group form tandem working pattern; When external power supply is the high frequency electric source of electron rectifier output, capacitor C 1, C2, C3 and resistance R 1 form a capacitance partial pressure circuit, and voltage reaches silicon controlled trigger voltage, controlled silicon conducting, a LED lamp group and the 2nd LED lamp group form parallel operation pattern.
Linear constant current unit is comprised of two triode Q1, Q2, resistance R 2, R3, high speed recovery diode D3 and voltage-stabiliser tube Z2; Triode Q1, Q2 form multiple tube, and resistance R 2 is connected between the colelctor electrode and base stage of multiple tube, and voltage-stabiliser tube Z2 connects base stage and the output of multiple tube; Resistance R 3 is serially connected on multiple tube emitter stage and output, and high speed recovery diode D3 is connected on unit input; Described triode Q1 is low-power triode, and triode Q2 is switch triode; This unit input is connected with the output of a LED lamp group, and output is connected with the input of the 2nd LED lamp group.
High speed recovery diode D3 is connected on unit input, when external civil power, and diode forward conducting, when exoelectron rectifier, linear constant current unit output current potential is higher than input current potential, and diode reverse is ended.
The effect one of linear constant current unit: a stable operating current is provided to LED lamp group, the electric current that prevents from flowing through LED lamp is excessive, burns out lamp pearl; Effect two: this element can disappear the crest voltage of input fall, and can stablize the effect of input power, while 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.When two lamps compositions are connected in parallel, this linearity constant current unit oppositely ends, and because electron rectifier is output as constant-current source, does not now need to increase current limliting unit again.
Two multiple tubes that triode is combined into, its effect is that the resistance of resistance R 2 can be got greatly as far as possible, resistance R 3 is current sampling resistors, by changing its resistance, can adjust the supply current of LED lamp group.
If input termination is the civil power of 50Hz/60Hz, the electric current that flows through lamp pearl after rectifying and wave-filtering is to approach square wave, adds controllable silicon dimmer before input, can change the input angle of flow, flows through the ON time of LED lamp pearl, thereby carry out light modulation thereby change electric current.
T5LED fluorescent tube standard operation state of the present invention is 220V, 50/60Hz, directly compatible following line work:
1) 160v-265v, 50/60Hz ac power supply line;
2) 160v-265v, 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, 50/60Hz Alternating Current Power Supply, meets the electron rectifier supply line that pressure regulator is powered.
5) 200v-300v, direct current supply line.
The concrete marginal data of LED fluorescent tube line of replaceable T5 fluorescent lamp, as Fig. 5 directly replaces the connecting line construction of fluorescent tube, Fig. 6 is the direct connecting line construction by mains-supplied, Fig. 7 for accessing the connecting line construction of civil power after controllable silicon light modulation.
The test result of the LED fluorescent tube of replaceable T5 fluorescent lamp is as follows:
Testing equipment: a distant place 9800 power measurings, 0-300V AC voltage regulator, exchanges isolating transformer;
Directly connect AC power:
| Voltage (v) | Electric current (ma) | Power (W) | Power factor |
| 220 | 82 | 168 | 0921 |
External connected electronic rectifier (the excessive lamp bracket of celebrating)
1. while working while meeting civil power 220V, power 16W, compared with fluorescent lamp T5 fluorescent tube (28W), economize on electricity 12W, surpasses 0.9 power factor.
2. while connecing electron rectifier work, when external voltage be low to moderate electron rectifier cannot starting of oscillation time (if connect fluorescent tube, now fluorescent tube cannot starter, fluorescent tube is bright not to get up), the work of LED fluorescent tube automatic lifting power, keep good illumination output, after external voltage raises, fluorescent tube automatically switches to normal operating conditions.During normal voltage 220V, power output is 16W, compared with fluorescent tube power saving 12W.Power factor is high.
Claims (8)
1. a LED fluorescent tube for replaceable T5 fluorescent lamp, comprise lamp holder, T5 fluorescent tube specification aluminium section bar, pcb board, lampshade, be assemblied in LED lamp pearl and power module on pcb board; Pcb board is fixed on aluminium section bar, and lamp holder is arranged on aluminium section bar two ends, and is electrically connected to pcb board; Aluminum profile cross section becomes semi arch moulding, radially form a mounting plane, long limit, mounting plane both sides convexes with respectively locking edge, it is characterized in that described two relative one sides of locking edge have a reducing, one side mutually far away has a buckling groove that can allow lampshade slip into, the back side disjunctor of described mounting plane has radiating fin, and radiating fin end forms semi arch moulding; Described mounting plane surface is coated with heat conductive silica gel, and pcb board is parallel to be pressed among two locking edges, and by the systolic pressure of the lampshade of outer button, draw-in groove both sides aluminium section bar pushes inwardly, clamp pcb board, therein clamping by the reducing of two locking edges, close adhesion is on described mounting plane; Lamp holder inner side is with the electroconductive elastic sheet being electrically connected to lamp holder external electrode, and lamp holder is arranged on aluminium section bar two ends, and the shell fragment that is in place distortion is conflicted on pcb board conductive contact, forms and is electrically connected to; Power module comprises antisurge unit, rectification filtering unit, a LED lamp group, linear constant current unit and the 2nd LED lamp group connecting successively; Power module also comprises a switch control unit, and switch control unit connects rectification filtering unit, and controls respectively a LED lamp group and the 2nd LED lamp group; While being output as low frequency signal after switch control unit detects rectification, switch control unit is not exported control signal, and a LED lamp group, linear constant current unit and the 2nd LED lamp group form tandem working pattern; While being output as high-frequency signal after switch control unit detects rectification, switch control unit output control signal, switches to a LED lamp group and the 2nd LED lamp group is parallel operation pattern, and closes linear constant current unit; A described LED lamp group and the 2nd LED lamp group are by after several LED lamp pearl series connection, then the combination that several LED lamp pearl strings are connected together.
2. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1, is characterized in that lamp holder is the outer polygonized structure of inner circle, and the center of inner circle toward aluminium section bar one lateral deviation from; Corresponding lampshade one side of described lamp holder has an extension.
3. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1 and 2, is characterized in that described lamp holder forms the plug tenon of disjunctor inwardly, is plugged in the gap of aluminium section bar radiating fin by this plug tenon, forms embedded location structure.
4. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1, the mounting plane back side that it is characterized in that aluminium section bar is domes, its cross section thick middle, gradually toward both sides attenuation; Described radiating fin is distributed on described domes surface.
5. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1, is characterized in that antisurge unit is comprised of a piezo-resistance R1 who is serially connected in the fuse Fuse on loop and is attempted by input.
6. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1, it is characterized in that rectification filtering unit is that a high frequency bridge heap D1, fast recovery diode D2 and high-frequency filter capacitor C4 form, rectifier bridge stack D1 output meets diode D2, and diode D2 output meets high-frequency filter capacitor C4; Described high-frequency filter capacitor C4 adopts electric capacity of the dacron or high pressure patch capacitor.
7. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1, is characterized in that switch control unit is by three capacitor C 1, C2, and C3, resistance R 1, pressure limiting diode Z1 and two controllable silicon SCR 1 and SCR2 form; Capacitor C 1, C2, C3 and resistance R 1 form a capacitance partial pressure circuit, and capacitor C 2 high-pressure sides connect the control pin of controllable silicon SCR 1, and controllable silicon SCR 1 connects respectively between rectification filtering unit output and the 2nd LED lamp group input; The high-pressure side of capacitor C 3 is connected with the control pin of silicon controlled SCR2 after pressure limiting diode Z1, and controllable silicon SCR 2 connects respectively between the 2nd LED lamp group output and backflow; By the break-make of two controllable silicon SCR 1 and SCR2, switching a LED lamp group and the 2nd LED lamp group is in mode of operation in parallel or series connection.
8. the LED fluorescent tube of replaceable T5 fluorescent lamp according to claim 1, is characterized in that linear constant current unit is comprised of two triode Q1, Q2, resistance R 2, R3, high speed recovery diode D3 and voltage-stabiliser tube Z2; Triode Q1, Q2 form multiple tube, and resistance R 2 is connected between the colelctor electrode and base stage of multiple tube, and voltage-stabiliser tube Z2 connects base stage and the output of multiple tube; Resistance R 3 is serially connected on multiple tube emitter stage and output, and high speed recovery diode D3 is connected on unit input; Described triode Q1 is low-power triode, and triode Q2 is switch triode; This unit input is connected with the output of a LED lamp group, and output is connected with the input of the 2nd LED lamp group.
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| CN201210120800.8A CN102635804B (en) | 2012-04-23 | 2012-04-23 | LED (light-emitting diode) lamp tube capable of replacing T5 fluorescent lamp |
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| CN201210120800.8A CN102635804B (en) | 2012-04-23 | 2012-04-23 | LED (light-emitting diode) lamp tube capable of replacing T5 fluorescent lamp |
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| JP2007294143A (en) * | 2006-04-21 | 2007-11-08 | Daikin Ind Ltd | Lighting system and bed provided with lighting system |
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|---|---|---|---|---|
| DE202010004091U1 (en) * | 2010-03-23 | 2010-08-05 | Jung, Stefan, Dipl.-Ing. | LED luminous tube with protective extra-low voltage (12 ... 24 V) for use in conventional T8 / T5 fluorescent tube lights |
| CN201706244U (en) * | 2010-04-09 | 2011-01-12 | 东莞市邦臣光电有限公司 | LED fluorescent lamp capable of improving security |
| CN201715317U (en) * | 2010-06-30 | 2011-01-19 | 谭巧珠 | Light emitting diode (LED) fluorescent lamp tube |
| 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 |
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| CN102635804A (en) | 2012-08-15 |
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Application publication date: 20120815 Assignee: XIAMEN FLOW PHOTOELECTRIC CO., LTD. Assignor: Hou Liguang Contract record no.: 2014350000061 Denomination of invention: LED (light-emitting diode) lamp tube capable of replacing T5 fluorescent lamp Granted publication date: 20140402 License type: Exclusive License Record date: 20140612 |
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