CN206257475U - A kind of LED and its drive circuit - Google Patents

Abstract

The utility model discloses a kind of LED and its drive circuit, including lampshade, white LED lamp and base, lampshade spiral is connected to base top, base upper end face is provided with fixed plate, fixed plate upper surface is provided with multiple purple LED lamps, white LED lamp and covers the inside lampshade of purple LED lamp and white LED lamp, base outer surface by concavo-convex alternate groups of fins into, drive circuit is provided with base, drive circuit is electrically connected white LED lamp and purple LED lamp, and lampshade inner surface, internal lampshade inner surface and fixed plate upper surface scribble photocatalyst.High-tension electricity area and low voltage control area are carried out Phototube Coupling by the utility model using photoelectrical coupler; it is different from the constant-current driving power supply of HF switch IC controls; current fluctuation of the fixable back clamping voltage to LED carries out automatic detection, feedback or corrects; the constant current of stability and high efficiency is exported by chip U2; whole power driving circuit is stable and reliable in work; HF switch is not produced to shake, do not produce electromagnetic radiation and High-frequency Interference; there is no vibrating noise; anti- ripple, interference resistance are strong, electric energy efficiency up to more than 90% also have antioverloading, anti-overshoot protection the advantages of.

Description

A kind of LED and its drive circuit

Technical field

The utility model is related to a kind of LED, specifically a kind of LED and its drive circuit.

Background technology

With the accelerated development and the continuous dilatation in city of urbanization, problem of environmental pollution is increasingly serious, and wherein air is dirty Dye is especially prominent.In lighting field, advocating green illumination, environmental protection and ecology becomes the groundwork of illumination research staff Target, carries out purification of air improvement and has been achieved for significant progress, by big well known using photocatalyst material.Photocatalyst is

A kind of general name of photosemiconductor material with photo-catalysis function with Nano titanium dioxide as representative, generally applies It is distributed in base material

Surface, photocatalyst can produce light-catalyzed reaction under light illumination, produce the extremely strong free hydroxy of oxidability and Active oxygen, can kill the bacterium in air and decomposing organic pollutant, and organic pollution is resolved into free of contamination water, dioxy Change carbon and other innocuous substances, using mosquito become light, it is dynamic, temperature sensitive with air-flow, like clustering, particularly chase titanium dioxide Carbon breath and the habit looked for sex pheromone and arrive, can also be used to mosquito repellent.The experiment proved that, photocatalyst is made in the irradiation of ultraviolet light It is optimal with lower photocatalysis effect.However, the ultraviolet light produced by the ordinary luminaire that uses of interior is few, it is impossible to photocatalyst Play a part of fully irradiation so that photocatalyst light-catalyzed reaction is weaker, and air purification effect is poor, even if having occurred now The LED with violet source, also because the area of violet source irradiation photocatalyst is narrow and small and cause using effect not good.

The content of the invention

The purpose of this utility model is to provide that a kind of photocatalyst coating area is big, good air purification effect, anthelminthic effect LED and its drive circuit strong and that outer lampshade can be changed, to solve the problems, such as to be proposed in above-mentioned background technology.

To achieve the above object, the utility model provides following technical scheme：

A kind of LED and its drive circuit, including lampshade, white LED lamp and base, the lampshade spiral are connected to base Top, base upper end face is provided with fixed plate, and fixed plate upper surface is provided with multiple purple LED lamps, white LED lamp and covers purple The inside lampshade of light LED and white LED lamp, the white LED lamp is located in the middle of fixed plate, and the white LED lamp is externally provided with Purple LED lamp is equipped between multiple internal lampshades, each two adjacent inner lampshade, the base outer surface is dissipated by concavo-convex alternate Backing is constituted, and drive circuit is provided with the base, and drive circuit is electrically connected white LED lamp and purple LED lamp, the lamp Cover inner surface, internal lampshade inner surface and fixed plate upper surface scribble photocatalyst.Drive circuit include chip U1, chip U2, Photoelectrical coupler U3, transformer T and fuse FU, described fuse FU one end connects 220V alternating currents, the fuse FU other ends Connection resistance R1, the resistance R1 other ends connect electric capacity C1 and transformer T coil L1 respectively, and the electric capacity C1 other ends connect 220V respectively The alternating current other end and transformer T coil L2, transformer coil L1 and the transformer coil L2 other ends are connected respectively rectification Bridge Q pin 1 and rectifier bridge Q pin 3, rectifier bridge Q pin 2 connect electric capacity C2 and resistance R9 respectively, and the resistance R9 other ends connect respectively Connecting resistance R10, electric capacity C3, resistance R11 and transformer T1 coil L3, the transformer T2 coil L3 other ends connect diode D1 respectively Positive pole and chip U1 pin DRAIN, diode D1 negative poles connect the electric capacity C3 other ends and the resistance R11 other ends, the electricity respectively The resistance R10 other ends connect ground capacity C5, diode D2 negative poles, chip U1 pins VDD and photoelectrical coupler U3 pin 3 respectively, Photoelectrical coupler U3 pins 1 connect power supply VCC, the connection resistance R2 of photoelectrical coupler U3 pins 2,4 points of photoelectrical coupler U3 pins Not Lian Jie ground capacity C4 and chip U1 pin FB, chip U1 pins SOUROE connects rectifier bridge Q pin 4 and transformer T3 respectively Coil L5 is simultaneously grounded, and transformer T3 coil L5 other ends connection diode D2 positive poles, the transformer T2 coils L4 connects two poles Pipe D3 positive poles, diode D3 negative poles connect electric capacity C6, resistance R12, electric capacity C7 and LED light group G respectively, and LED light group G is connected respectively Resistance R8, the electric capacity C7 other ends and resistance R14, the resistance R14 other ends connect the transformer T2 coil L4 other ends, electric capacity C6 respectively The other end and resistance R13 are simultaneously grounded, and the resistance R13 other ends connect the resistance R12 other ends, resistance R4 and chip U2 pins 4 respectively, The resistance R4 other ends connect electric capacity C9, and the electric capacity C9 other ends connect the resistance R2 other ends and resistance R3, the resistance R3 other ends respectively Electric capacity C10 and chip U2 pins 7 are connected respectively, and electric capacity C10 other ends connection resistance R5, the resistance R5 other ends connect resistance respectively The R8 other ends and chip U2 pins 2, chip U2 pins 8 connect power supply VCC, diode D4 negative poles and electric capacity C8, electric capacity C8 respectively The other end connects transformer T3 coil L6, transformer T3 coil L6 other ends connection diode D4 positive poles, the chip U2 pins 1 Connection chip U2 pins 5 and resistance R7, resistance the R7 other end connect chip U2 pins 3 and resistance R6 respectively respectively, and resistance R6 is another One end connects chip U2 pins 6 and is grounded.

As further program of the utility model：The lampshade outer surface is concavo-convex interphase structure, and lampshade bottom uses Helicitic texture.

As further program of the utility model：Air vent is offered on the fixed plate and base.

As further program of the utility model：The internal lampshade is clear glass material.

As further program of the utility model：The chip U1 is smart power switch adjuster VIPER22A.

As further program of the utility model：The chip U2 is dual comparator TSMLL011.

As the utility model further scheme：The photoelectrical coupler U3 models PC817A.

Compared with prior art, the beneficial effects of the utility model are：The utility model is by using multiple purple LED lamps With multilayer using the inside lampshade of photocatalyst coating, photocatalyst coating is set to be greatly increased with the contact area of purple light, so as to increase The detergent power and repellency of LED, on base and fixed plate set air vent, using bulb fuel factor with it is extraneous Environment forms convection current, purification function is not fully exerted, and the utility model is also using the lampshade of threaded interface so that lampshade Detachably, illuminated so as to be user-friendly to the lampshade of different colours.

Brief description of the drawings

Fig. 1 is the structural representation of LED and its drive circuit；

Fig. 2 is the structural representation of lampshade in LED and its drive circuit；

Fig. 3 is the circuit diagram of drive circuit in LED and its drive circuit；

In figure：1- lampshades, 2- inside lampshade, 3- white LED lamps, 4- fixed plates, 5- bases, 6- purple LEDs lamp, 7- drive Circuit.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.

Fig. 1,2 are referred to, in the utility model embodiment, a kind of LED and its drive circuit, including lampshade 1, white light LED 3 and base 5, the spiral of lampshade 1 are connected to the top of base 5, and the upper end face of base 5 is provided with fixed plate 4, the upper surface of fixed plate 4 It is provided with multiple purple LED lamps 6, white LED lamp 3 and covers the inside lampshade 2 of purple LED lamp 6 and white LED lamp 3, white light LED 3 is located in the middle of fixed plate 4, and white LED lamp 3 is externally provided between multiple inside lampshade 2, each two adjacent inner lampshade 2 and is all provided with There is purple LED lamp 6, the outer surface of base 5 is by concavo-convex alternate groups of fins into base 5 is interior to be provided with drive circuit 7, drive circuit 7 White LED lamp 3 and purple LED lamp 6 are electrically connected, the inner surface of lampshade 1, the internal inner surface of lampshade 2 and the upper surface of fixed plate 4 are equal Scribble photocatalyst.Drive circuit includes chip U1, chip U2, photoelectrical coupler U3, transformer T and fuse FU, the fusing Device FU one end connect 220V alternating currents, the fuse FU other ends connection resistance R1, the resistance R1 other ends connect respectively electric capacity C1 and Transformer T coil L1, electric capacity the C1 other ends connect the 220V alternating currents other end and transformer T coil L2, transformer coil respectively L1 and the transformer coil L2 other ends are connected respectively rectifier bridge Q pin 1 and rectifier bridge Q pin 3, and rectifier bridge Q pin 2 is distinguished Connection electric capacity C2 and resistance R9, the resistance R9 other ends connect resistance R10, electric capacity C3, resistance R11 and transformer T1 coils respectively L3, the transformer T2 coil L3 other ends connect diode D1 positive poles and chip U1 pin DRAIN, diode D1 negative pole difference respectively Connection the electric capacity C3 other ends and the resistance R11 other ends, the resistance R10 other ends connect ground capacity C5, diode D2 respectively Negative pole, chip U1 pins VDD and photoelectrical coupler U3 pin 3, the connection power supply VCC of photoelectrical coupler U3 pins 1, photoelectrical coupler U3 pins 2 connect resistance R2, and photoelectrical coupler U3 pins 4 connect ground capacity C4 and chip U1 pin FB respectively, and chip U1 draws Pin SOUROE connects rectifier bridge Q pin 4 and transformer T3 coils L5 and is grounded respectively, transformer T3 coil L5 other ends connection two Pole pipe D2 positive poles, the transformer T2 coils L4 connects diode D3 positive poles, and diode D3 negative poles connect electric capacity C6, resistance respectively R12, electric capacity C7 and LED light group G, LED light group G connect resistance R8, the electric capacity C7 other ends and resistance R14 respectively, and resistance R14 is another End connects the transformer T2 coil L4 other ends, the electric capacity C6 other ends and resistance R13 and is grounded respectively, resistance R13 other ends difference The connection resistance R12 other ends, resistance R4 and chip U2 pins 4, resistance R4 other ends connection electric capacity C9, electric capacity C9 other ends difference Connection the resistance R2 other ends and resistance R3, the resistance R3 other ends connect electric capacity C10 and chip U2 pins 7 respectively, and electric capacity C10 is another End connection resistance R5, the resistance R5 other ends connect the resistance R8 other ends and chip U2 pins 2 respectively, and chip U2 pins 8 connect respectively Meet power supply VCC, diode D4 negative poles and electric capacity C8, the connection of the electric capacity C8 other ends transformer T3 coil L6, transformer T3 coils L6 The other end connects diode D4 positive poles, and the chip U2 pins 1 connect chip U2 pins 5 and resistance R7 respectively, and resistance R7 is another Connection chip U2 pins 3 and resistance R6, resistance the R6 other end connect chip U2 pins 6 and are grounded respectively at end.

Operation principle of the present utility model is：The inner surface of lampshade 1, the internal inner surface of lampshade 2 and the upper surface of fixed plate 4 apply There is photocatalyst, the outer surface of lampshade 1 is concavo-convex interphase structure, and the bottom of lampshade 1 uses helicitic texture, easily can be torn open from base Unload, change desired color lampshade, air vent is offered in fixed plate 4 and base 5, bulb work can release heat, pass through Air vent forms convection current with external environment condition, expands purification of air scope, attracts the scope of mosquito also to be expanded, internal lampshade 2 is multiple, and is clear glass material, and lampshade 1 is random color glass material.

Chip U1 is the smart power switch adjuster for integrating pwm control circuit and power MOSFET, and chip U2 is The TSMLL011 of built-in 2.5V reference voltages and dual comparator, resistance R6 are sample resistance, and it compares with the electric current in chip U2 Device etc. constitutes current control loop, the voltage comparator in resitstance voltage divider R4, R5 and chip U2 etc., constitutes voltage control loop Road, feedback is realized by photoelectrical coupler U1, and high-tension electricity area and low voltage control area are carried out into Phototube Coupling, fixable reverse Current fluctuation of the clamp voltage to LED carries out automatic detection, feedback or corrects, and the constant of stability and high efficiency is exported by chip U2 Electric current, whole power driving circuit is stable and reliable in work, does not produce HF switch to shake, does not produce electromagnetic radiation and high frequency dry Disturb, there is no vibrating noise, anti-ripple, interference resistance are strong, electric energy efficiency also has antioverloading, anti-overshoot protection etc. excellent up to more than 90% Point.

High-tension electricity area and low voltage control area are carried out by Phototube Coupling using photoelectrical coupler, HF switch IC controls are different from Constant-current driving power supply, current fluctuation of the fixable back clamping voltage to LED carry out automatic detection, feedback or correct, The constant current of stability and high efficiency is exported by chip U2, whole power driving circuit is stable and reliable in work, does not produce HF switch Concussion, do not produce electromagnetic radiation and High-frequency Interference, there is no a vibrating noise, anti-ripple, interference resistance are strong, electric energy efficiency up to 90% with The advantages of upper also antioverloading, anti-overshoot protection.

Claims (7)

1. a kind of LED and its drive circuit, including lampshade（1）, white LED lamp（3）And base（5）, it is characterised in that it is described Lampshade（1）Spiral is connected to base（5）Top, base（5）Upper end face is provided with fixed plate（4）, fixed plate（4）Upper surface is provided with Multiple purple LED lamps（6）, white LED lamp（3）And cover purple LED lamp（6）And white LED lamp（3）Inside lampshade（2）, The white LED lamp（3）Positioned at fixed plate（4）Centre, the white LED lamp（3）It is externally provided with multiple inside lampshade（2）, every two Individual adjacent inner lampshade（2）Between be equipped with purple LED lamp（6）, the base（5）Outer surface is by concavo-convex alternate groups of fins Into the base（5）Inside it is provided with drive circuit（7）, drive circuit（7）It is electrically connected white LED lamp（3）With purple LED lamp （6）, the lampshade（1）Inner surface, internal lampshade（2）Inner surface and fixed plate（4）Upper surface scribbles photocatalyst；Drive circuit Including chip U1, chip U2, photoelectrical coupler U3, transformer T and fuse FU, fuse FU one end connection 220V exchanges Electricity, fuse FU other ends connection resistance R1, the resistance R1 other ends connect electric capacity C1 and transformer T coil L1, electric capacity C1 respectively The other end connects the 220V alternating currents other end respectively and transformer T coil L2, transformer coil L1 and transformer coil L2 is another End is connected respectively rectifier bridge Q pin 1 and rectifier bridge Q pin 3, and rectifier bridge Q pin 2 connects electric capacity C2 and resistance R9 respectively, The resistance R9 other ends connect resistance R10, electric capacity C3, resistance R11 and transformer T1 coil L3 respectively, and L3 is another for transformer T2 coils Connection diode D1 positive poles and chip U1 pin DRAIN, diode D1 negative poles connect the electric capacity C3 other ends and electricity respectively respectively at end Resistance the R11 other ends, the resistance R10 other ends connect respectively ground capacity C5, diode D2 negative poles, chip U1 pins VDD and Photoelectrical coupler U3 pins 3, the connection power supply VCC of photoelectrical coupler U3 pins 1, the connection resistance R2 of photoelectrical coupler U3 pins 2, light Electric coupler U3 pins 4 connect ground capacity C4 and chip U1 pin FB respectively, and chip U1 pins SOUROE connects rectification respectively Bridge Q pin 4 and transformer T3 coils L5 are simultaneously grounded, transformer T3 coil L5 other ends connection diode D2 positive poles, the transformation Device T2 coils L4 connects diode D3 positive poles, and diode D3 negative poles connect electric capacity C6, resistance R12, electric capacity C7 and LED light group respectively G, LED light group G connect resistance R8, the electric capacity C7 other ends and resistance R14 respectively, and the resistance R14 other ends connect transformer T2 respectively The coil L4 other ends, the electric capacity C6 other ends and resistance R13 are simultaneously grounded, the resistance R13 other ends connect respectively the resistance R12 other ends, Resistance R4 and chip U2 pins 4, the resistance R4 other ends connection electric capacity C9, the electric capacity C9 other ends connect respectively the resistance R2 other ends and Resistance R3, resistance the R3 other end connect electric capacity C10 and chip U2 pins 7, electric capacity C10 other ends connection resistance R5, resistance respectively The R5 other ends connect the resistance R8 other ends and chip U2 pins 2 respectively, and chip U2 pins 8 connect power supply VCC, diode D4 respectively Negative pole and electric capacity C8, electric capacity C8 other ends connection transformer T3 coil L6, transformer T3 coil L6 other ends connection diode D4 Positive pole, the chip U2 pins 1 connect chip U2 pins 5 and resistance R7 respectively, and the resistance R7 other ends connect chip U2 and draw respectively Pin 3 and resistance R6, resistance R6 other ends connection chip U2 pins 6 are simultaneously grounded.

2. LED according to claim 1 and its drive circuit, it is characterised in that the lampshade（1）Outer surface is concavo-convex Interphase structure, lampshade（1）Bottom uses helicitic texture.

3. LED according to claim 1 and its drive circuit, it is characterised in that the fixed plate（4）And base（5） On offer air vent.

4. LED according to claim 1 and its drive circuit, it is characterised in that the internal lampshade（2）It is transparent glass Glass material.

5. LED according to claim 1 and its drive circuit, it is characterised in that the chip U1 is opened for intelligent power Close adjuster VIPER22A.

6. LED according to claim 1 and its drive circuit, it is characterised in that the chip U2 is dual comparator TSMLL011。

7. LED according to claim 1 and its drive circuit, it is characterised in that the photoelectrical coupler U3 models PC817A。