CN202469954U - Self-ballasted LED (Light-Emitting Diode) lamp tube - Google Patents

Abstract

The utility model relates to a LED (Light-Emitting Diode) lamp, in particular to a self-ballasted LED lamp tube. A LED lamp board is arranged in the LED lamp tube. The input end of an electrode diversion module is connected with the electrode input end of the LED lamp tube, the output end of the electrode diversion module is connected with the input end of a self-ballasted LED driving module, and the output end of the self-ballasted LED driving module is connected with the LED lamp board. The self-ballasted LED driving module is added into the LED lamp tube, and two PTC (Positive Temperature Coefficient) resistors and two groups of bridges composed of diodes are arranged in the high-voltage input end of the LED lamp tube, so that the coupling arbitrariness of various polar voltage of a end head is solved, the high pulse voltage close to 1KV generated by an inductive ballast during on-off is suppressed, and the LED driving module can be directly connected into a commercial power supply network of AC85V -260V to be used as a lighting lamp.

Description

From ballast LED fluorescent tube

Technical field

The present invention relates to a kind of LED light fixture, especially a kind of from ballast LED fluorescent tube.

Background technology

In the time of switch connection, supply voltage is added to the two poles of the earth of starter immediately through ballast and tube filament.220 volts voltage makes the ionized inert gas of starter immediately, produces glow discharge.The heat of glow discharge makes the bimetal leaf expanded by heating, the two poles of the earth contact.Electric current touches the utmost point through ballast, starter and the two ends filament constitutes path.Filament is launched a large amount of electronics very soon by current flow heats.At this moment, because starter the two poles of the earth are closed, two interpolar voltages are zero, and glow discharge disappears, and temperature reduces in the pipe; Bimetal leaf automatically resets, and the two poles of the earth are broken off.The moment of breaking off at the two poles of the earth, circuital current cuts off suddenly, and ballast produces very big self induction electromotive force, acts on the pipe two ends after superposeing with supply voltage.The a large amount of electronics that emit when filament is heated, under the lamp tube ends action of high voltage, with great speed by the low potential end to the high potential end motion.In the process of accelerated motion, argon molecules in the impact tube makes it rapid ionization.Heat is given birth in argon gas ionization, and heat makes mercury produce steam, and mercury vapor is also by ionization thereupon, and sends strong ultraviolet ray.Excite down ultraviolet, the fluorescent material in the tube wall sends the visible light of substantial white.

After fluorescent lamp is normally luminous.Because alternating current is the coil through ballast constantly; Produce self induction electromotive force in the coil; The electric current that self induction electromotive force hinders in the coil changes; At this moment ballast plays the step-down current limliting, makes current stabilization in the rated current scope of fluorescent tube, and lamp tube ends voltage also is stabilized in the rated operational voltage scope.Because this voltage is lower than the ionization voltage of starter, also just no longer worked so be connected in parallel on the starter at two ends.

Therefore will use the LED light fixture to replace traditional daylight at present, a kind of is that workload is big like this with the original whole light fixture of LED light fixture replacement, and the light fixture that abandons causes huge waste, and causes environmental pollution; Second kind is with in the fluorescent tube of packing into behind the LED lamp grain series/parallel, and it is consistent that the terminal voltage, electric current that makes fluorescent tube and fluorescent lamp parameter are made, and can directly replace the fluorescent lamp in the former light fixture in theory.But luminous intensity will be with city's electro-mechanical wave, and under identical illumination, and is not energy-conservation, and Inductive ballast has high-voltage pulse to take place when switch, so its reliability also has problem.In the lighting of the fluorescent lamp of all uses of the whole world, be to use traditional inductance type ballast more than 80%, so far, also do not have scheme a kind of not only energy-conservation but also directly replace fluorescent lamp (fluorescent lamp) reliably with the LED light fixture.

Summary of the invention

The present invention provide a kind of safe and reliable, energy-conservation, can directly replace the fluorescent tube that uses Inductive ballast from ballast LED fluorescent tube.

The technical solution adopted for the present invention to solve the technical problems is: a kind of from ballast LED fluorescent tube; Comprise the LED fluorescent tube, from ballast LED driver module, LED lamp plate, electrode water conservancy diversion module; It is characterized in that the LED lamp plate is arranged in the LED fluorescent tube; The input of electrode water conservancy diversion module is connected with the electrode input of LED fluorescent tube, and the output of electrode water conservancy diversion module is connected with input from ballast LED driver module, is connected with the LED lamp plate from the output of ballast LED driver module.

Of the present inventionly further be set to: electrode water conservancy diversion module comprises two bridge circuit, the PTC resistance that are made up of four diodes, and two bridge circuit parallel connections constitute the rectifying bridge type circuit, and PTC resistance is connected in the input circuit of rectifying bridge type circuit.

Of the present inventionly further be set to: comprise isolated PFC control power supply, AP4313 from ballast LED driver module, the output of isolated PFC control power supply is connected with the input of AP4313, and the output of AP4313 is connected with the LED lamp plate.

Said structure is directly replaced the problem of fluorescent lamp in order to solve the LED lamp; In the LED fluorescent tube, add from ballast LED driver module; Add electric bridge that two PTC resistance and two groups are made up of diode electrode water conservancy diversion module in the high voltage input terminal of LED fluorescent tube as input voltage; No matter how old four electrodes in fluorescent lamp two ends connect; Can introduce driving voltage on ballast LED driver module to come, solving the randomness that each pole tension of termination connects, and suppress the high voltage pulse of the nearly 1KV that Inductive ballast produces when break-make; And adopt the combination of isolated PFC control power supply and AP4313 from ballast LED driver module, so the present invention also can directly insert in the mains-supplied net of AC 85V～260V as lighting.

Description of drawings

Fig. 1 is the theory diagram of present embodiment;

Fig. 2 is the circuit theory diagrams of present embodiment;

Fig. 3 is the structural representation of present embodiment;

The specific embodiment

Can know with reference to figure 1, Fig. 2, Fig. 3; A kind of from ballast LED fluorescent tube; Comprise LED fluorescent tube 1, from ballast LED driver module 2, LED lamp plate 3, electrode water conservancy diversion module 4, the LED lamp plate is arranged in the LED fluorescent tube 1, the input of electrode water conservancy diversion module 4 is connected with the electrode input of LED fluorescent tube 1; The output of electrode water conservancy diversion module 4 is connected with input from ballast LED driver module 2; Output from ballast LED driver module 2 is connected with LED lamp plate 3, and electrode water conservancy diversion module 4 comprises two bridge circuit, the PTC resistance that are made up of four diodes, and two bridge circuit parallel connections constitute the rectifying bridge type circuit; PTC resistance F1 and F2 are connected in the input circuit of rectifying bridge type circuit; The output of rectifying bridge type circuit is connected with the input of isolated PFC control power supply, and the output of isolated PFC control power supply is connected with the input of AP4313, and the output of AP4313 is connected with the LED lamp plate.

PTC is the abbreviation of Positive Temperature Coefficient, and the meaning is positive temperature coefficient, very big semi-conducting material or the components and parts of general reference positive temperature coefficient.Usually we PTC that mentions is meant semistor; Be called for short PTC; The PTC thermistor is the semiconductor resistor that a kind of typical case has temperature sensitivity, and when surpassing certain temperature (Curie temperature), its resistance value is along with the rising of temperature is increasing of step evolution.Therefore be connected on the high voltage input terminal at thermistor F1, thermistor F2; Rectifying bridge type circuit through the guiding electric current solves two problems: one of which, avoided electrode 1, electrode 2 and electrode 3,4 liang of randomnesss that are connected of electrode; No matter how electrode connects; Rectifying bridge type circuit of the present invention can be converted into the direct impulse electricity with alternating current, and the assurance electric current can be introduced smoothly in ballast LED driver module; Its two, isolated starter S, avoided energising moment; By the high pressure that starter S causes, when AC power supplies was imported, starter S moved; Make inductance L produce about one kilovolt high back voltage,, utilize the cut-off current characteristics of PTC resistance if directly introducing can cause the damage from ballast LED driver module; The releasing reverse high pressure reaches the purpose of isolating starter S.

The English full name of PFC is " Power Factor Correction "; The meaning is " PFC "; Power factor refers to the relation between effective power and the total power consumption (apparent energy), and just effective power is divided by the ratio of total power consumption (apparent energy), and power factor (PF) can be weighed the degree that electric power is used effectively basically; When the power factor (PF) value is big more, represent its electric power utilization rate high more.

And adopt isolated PFC control power supply and AP4313 to combine from ballast LED driver module, all be to adopt non-isolated PFC control power supply in the general LED driving power, and the parameter value of isolated PFC control power supply is than higher, stable, safety; As input stage, AP4313 is as output stage with isolated PFC control power supply, and that adopt in the present embodiment is the integrated IC of L6562 and AP4313; Effect at constant current constant voltage is fine; Great electric energy efficiency be can obtain, and the insulation and the security performance of fluorescent tube improved, the change-over circuit in ballast LED driver module among the L6562; Can directly insert in the utility grid; And AP4313 is as the constant current output, and voltage regulation result is fine, so the alternating current of 85V-260V; Can be suitable for from ballast LED driver module among the present invention, the cooperation of adding electrode water conservancy diversion module has just thoroughly solved drawback and hidden danger that the LED light fixture directly replaces fluorescent lamp to exist.

Claims (3)

1. one kind from ballast LED fluorescent tube; Comprise the LED fluorescent tube, from ballast LED driver module, LED lamp plate, electrode water conservancy diversion module; It is characterized in that: the LED lamp plate is arranged in the LED fluorescent tube; The input of electrode water conservancy diversion module is connected with the electrode input of LED fluorescent tube, and the output of electrode water conservancy diversion module is connected with input from ballast LED driver module, is connected with the LED lamp plate from the output of ballast LED driver module.

2. according to claim 1 from ballast LED fluorescent tube; It is characterized in that: electrode water conservancy diversion module comprises two bridge circuit, the PTC resistance that are made up of four diodes; Two bridge circuit parallel connections constitute the rectifying bridge type circuit, and PTC resistance is connected in the input circuit of rectifying bridge type circuit.

3. according to claim 2 from ballast LED fluorescent tube; It is characterized in that: comprise isolated PFC control power supply, AP4313 from ballast LED driver module; The output of isolated PFC control power supply is connected with the input of AP4313, and the output of AP4313 is connected with the LED lamp plate.

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